diff --git a/src/main/java/org/xerial/snappy/OSInfo.java b/src/main/java/org/xerial/snappy/OSInfo.java index 1ed7a84..cafb07c 100755 --- a/src/main/java/org/xerial/snappy/OSInfo.java +++ b/src/main/java/org/xerial/snappy/OSInfo.java @@ -30,9 +30,8 @@ import java.util.Locale; /** * Provides OS name and architecture name. - * + * * @author leo - * */ public class OSInfo { @@ -76,15 +75,15 @@ public class OSInfo archMapping.put("power_rs", PPC); // TODO: PowerPC 64bit mappings - archMapping.put(PPC64, PPC64); - archMapping.put("power64", PPC64); - archMapping.put("powerpc64", PPC64); - archMapping.put("power_pc64", PPC64); - archMapping.put("power_rs64", PPC64); + archMapping.put(PPC64, PPC64); + archMapping.put("power64", PPC64); + archMapping.put("powerpc64", PPC64); + archMapping.put("power_pc64", PPC64); + archMapping.put("power_rs64", PPC64); } - - public static void main(String[] args) { + public static void main(String[] args) + { if (args.length >= 1) { if ("--os".equals(args[0])) { System.out.print(getOSName()); @@ -99,27 +98,31 @@ public class OSInfo System.out.print(getNativeLibFolderPathForCurrentOS()); } - public static String getNativeLibFolderPathForCurrentOS() { + public static String getNativeLibFolderPathForCurrentOS() + { return getOSName() + "/" + getArchName(); } - public static String getOSName() { + public static String getOSName() + { return translateOSNameToFolderName(System.getProperty("os.name")); } - public static String getArchName() { + public static String getArchName() + { // if running Linux on ARM, need to determine ABI of JVM String osArch = System.getProperty("os.arch"); if (osArch.startsWith("arm") && System.getProperty("os.name").contains("Linux")) { String javaHome = System.getProperty("java.home"); try { // determine if first JVM found uses ARM hard-float ABI - String[] cmdarray = { "/bin/sh", "-c", "find '" + javaHome + - "' -name 'libjvm.so' | head -1 | xargs readelf -A | " + - "grep 'Tag_ABI_VFP_args: VFP registers'" }; + String[] cmdarray = {"/bin/sh", "-c", "find '" + javaHome + + "' -name 'libjvm.so' | head -1 | xargs readelf -A | " + + "grep 'Tag_ABI_VFP_args: VFP registers'"}; int exitCode = Runtime.getRuntime().exec(cmdarray).waitFor(); - if (exitCode == 0) + if (exitCode == 0) { return "armhf"; + } } catch (IOException e) { // ignored: fall back to "arm" arch (soft-float ABI) @@ -127,16 +130,18 @@ public class OSInfo catch (InterruptedException e) { // ignored: fall back to "arm" arch (soft-float ABI) } - } + } else { String lc = osArch.toLowerCase(Locale.US); - if(archMapping.containsKey(lc)) + if (archMapping.containsKey(lc)) { return archMapping.get(lc); + } } return translateArchNameToFolderName(osArch); } - static String translateOSNameToFolderName(String osName) { + static String translateOSNameToFolderName(String osName) + { if (osName.contains("Windows")) { return "Windows"; } @@ -146,16 +151,17 @@ public class OSInfo else if (osName.contains("Linux")) { return "Linux"; } - else if (osName.contains("AIX")) { - return "AIX"; - } + else if (osName.contains("AIX")) { + return "AIX"; + } - else { + else { return osName.replaceAll("\\W", ""); } } - static String translateArchNameToFolderName(String archName) { + static String translateArchNameToFolderName(String archName) + { return archName.replaceAll("\\W", ""); } } diff --git a/src/main/java/org/xerial/snappy/PureJavaCrc32C.java b/src/main/java/org/xerial/snappy/PureJavaCrc32C.java index bde7ae9..bed1f76 100644 --- a/src/main/java/org/xerial/snappy/PureJavaCrc32C.java +++ b/src/main/java/org/xerial/snappy/PureJavaCrc32C.java @@ -6,15 +6,15 @@ * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * + *

+ * http://www.apache.org/licenses/LICENSE-2.0 + *

* Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. - * + *

* Some portions of this file Copyright (c) 2004-2006 Intel Corportation * and licensed under the BSD license. */ @@ -27,591 +27,599 @@ import java.util.zip.Checksum; * the CRC32-C polynomial, the same polynomial used by iSCSI * and implemented on many Intel chipsets supporting SSE4.2. */ -public class PureJavaCrc32C implements Checksum { +public class PureJavaCrc32C + implements Checksum +{ - /** the current CRC value, bit-flipped */ - private int crc; + /** the current CRC value, bit-flipped */ + private int crc; - /** Create a new PureJavaCrc32 object. */ - public PureJavaCrc32C() { - reset(); - } - - public int getIntegerValue() { - return ~crc; - } - - /** {@inheritDoc} */ - public long getValue() { - long ret = crc; - return (~ret) & 0xffffffffL; - } - - /** {@inheritDoc} */ - public void reset() { - crc = 0xffffffff; - } - - /** {@inheritDoc} */ - public void update(byte[] b, int off, int len) { - int localCrc = crc; - while(len > 7) { - int c0 = b[off++] ^ localCrc; - int c1 = b[off++] ^ (localCrc >>>= 8); - int c2 = b[off++] ^ (localCrc >>>= 8); - int c3 = b[off++] ^ (localCrc >>>= 8); - localCrc = (T8_7[c0 & 0xff] ^ T8_6[c1 & 0xff]) - ^ (T8_5[c2 & 0xff] ^ T8_4[c3 & 0xff]); - - localCrc ^= (T8_3[b[off++] & 0xff] ^ T8_2[b[off++] & 0xff]) - ^ (T8_1[b[off++] & 0xff] ^ T8_0[b[off++] & 0xff]); - - len -= 8; + /** Create a new PureJavaCrc32 object. */ + public PureJavaCrc32C() + { + reset(); } - while(len > 0) { - localCrc = (localCrc >>> 8) ^ T8_0[(localCrc ^ b[off++]) & 0xff]; - len--; + + public int getIntegerValue() + { + return ~crc; } - - // Publish crc out to object - crc = localCrc; - } - /** {@inheritDoc} */ - final public void update(int b) { - crc = (crc >>> 8) ^ T8_0[(crc ^ b) & 0xff]; - } - - // CRC polynomial tables generated by: - // java -cp build/test/classes/:build/classes/ \ - // org.apache.hadoop.util.TestPureJavaCrc32\$Table 82F63B78 + /** {@inheritDoc} */ + public long getValue() + { + long ret = crc; + return (~ret) & 0xffffffffL; + } - static final int[] T8_0 = new int[] { - 0x00000000, 0xF26B8303, 0xE13B70F7, 0x1350F3F4, - 0xC79A971F, 0x35F1141C, 0x26A1E7E8, 0xD4CA64EB, - 0x8AD958CF, 0x78B2DBCC, 0x6BE22838, 0x9989AB3B, - 0x4D43CFD0, 0xBF284CD3, 0xAC78BF27, 0x5E133C24, - 0x105EC76F, 0xE235446C, 0xF165B798, 0x030E349B, - 0xD7C45070, 0x25AFD373, 0x36FF2087, 0xC494A384, - 0x9A879FA0, 0x68EC1CA3, 0x7BBCEF57, 0x89D76C54, - 0x5D1D08BF, 0xAF768BBC, 0xBC267848, 0x4E4DFB4B, - 0x20BD8EDE, 0xD2D60DDD, 0xC186FE29, 0x33ED7D2A, - 0xE72719C1, 0x154C9AC2, 0x061C6936, 0xF477EA35, - 0xAA64D611, 0x580F5512, 0x4B5FA6E6, 0xB93425E5, - 0x6DFE410E, 0x9F95C20D, 0x8CC531F9, 0x7EAEB2FA, - 0x30E349B1, 0xC288CAB2, 0xD1D83946, 0x23B3BA45, - 0xF779DEAE, 0x05125DAD, 0x1642AE59, 0xE4292D5A, - 0xBA3A117E, 0x4851927D, 0x5B016189, 0xA96AE28A, - 0x7DA08661, 0x8FCB0562, 0x9C9BF696, 0x6EF07595, - 0x417B1DBC, 0xB3109EBF, 0xA0406D4B, 0x522BEE48, - 0x86E18AA3, 0x748A09A0, 0x67DAFA54, 0x95B17957, - 0xCBA24573, 0x39C9C670, 0x2A993584, 0xD8F2B687, - 0x0C38D26C, 0xFE53516F, 0xED03A29B, 0x1F682198, - 0x5125DAD3, 0xA34E59D0, 0xB01EAA24, 0x42752927, - 0x96BF4DCC, 0x64D4CECF, 0x77843D3B, 0x85EFBE38, - 0xDBFC821C, 0x2997011F, 0x3AC7F2EB, 0xC8AC71E8, - 0x1C661503, 0xEE0D9600, 0xFD5D65F4, 0x0F36E6F7, - 0x61C69362, 0x93AD1061, 0x80FDE395, 0x72966096, - 0xA65C047D, 0x5437877E, 0x4767748A, 0xB50CF789, - 0xEB1FCBAD, 0x197448AE, 0x0A24BB5A, 0xF84F3859, - 0x2C855CB2, 0xDEEEDFB1, 0xCDBE2C45, 0x3FD5AF46, - 0x7198540D, 0x83F3D70E, 0x90A324FA, 0x62C8A7F9, - 0xB602C312, 0x44694011, 0x5739B3E5, 0xA55230E6, - 0xFB410CC2, 0x092A8FC1, 0x1A7A7C35, 0xE811FF36, - 0x3CDB9BDD, 0xCEB018DE, 0xDDE0EB2A, 0x2F8B6829, - 0x82F63B78, 0x709DB87B, 0x63CD4B8F, 0x91A6C88C, - 0x456CAC67, 0xB7072F64, 0xA457DC90, 0x563C5F93, - 0x082F63B7, 0xFA44E0B4, 0xE9141340, 0x1B7F9043, - 0xCFB5F4A8, 0x3DDE77AB, 0x2E8E845F, 0xDCE5075C, - 0x92A8FC17, 0x60C37F14, 0x73938CE0, 0x81F80FE3, - 0x55326B08, 0xA759E80B, 0xB4091BFF, 0x466298FC, - 0x1871A4D8, 0xEA1A27DB, 0xF94AD42F, 0x0B21572C, - 0xDFEB33C7, 0x2D80B0C4, 0x3ED04330, 0xCCBBC033, - 0xA24BB5A6, 0x502036A5, 0x4370C551, 0xB11B4652, - 0x65D122B9, 0x97BAA1BA, 0x84EA524E, 0x7681D14D, - 0x2892ED69, 0xDAF96E6A, 0xC9A99D9E, 0x3BC21E9D, - 0xEF087A76, 0x1D63F975, 0x0E330A81, 0xFC588982, - 0xB21572C9, 0x407EF1CA, 0x532E023E, 0xA145813D, - 0x758FE5D6, 0x87E466D5, 0x94B49521, 0x66DF1622, - 0x38CC2A06, 0xCAA7A905, 0xD9F75AF1, 0x2B9CD9F2, - 0xFF56BD19, 0x0D3D3E1A, 0x1E6DCDEE, 0xEC064EED, - 0xC38D26C4, 0x31E6A5C7, 0x22B65633, 0xD0DDD530, - 0x0417B1DB, 0xF67C32D8, 0xE52CC12C, 0x1747422F, - 0x49547E0B, 0xBB3FFD08, 0xA86F0EFC, 0x5A048DFF, - 0x8ECEE914, 0x7CA56A17, 0x6FF599E3, 0x9D9E1AE0, - 0xD3D3E1AB, 0x21B862A8, 0x32E8915C, 0xC083125F, - 0x144976B4, 0xE622F5B7, 0xF5720643, 0x07198540, - 0x590AB964, 0xAB613A67, 0xB831C993, 0x4A5A4A90, - 0x9E902E7B, 0x6CFBAD78, 0x7FAB5E8C, 0x8DC0DD8F, - 0xE330A81A, 0x115B2B19, 0x020BD8ED, 0xF0605BEE, - 0x24AA3F05, 0xD6C1BC06, 0xC5914FF2, 0x37FACCF1, - 0x69E9F0D5, 0x9B8273D6, 0x88D28022, 0x7AB90321, - 0xAE7367CA, 0x5C18E4C9, 0x4F48173D, 0xBD23943E, - 0xF36E6F75, 0x0105EC76, 0x12551F82, 0xE03E9C81, - 0x34F4F86A, 0xC69F7B69, 0xD5CF889D, 0x27A40B9E, - 0x79B737BA, 0x8BDCB4B9, 0x988C474D, 0x6AE7C44E, - 0xBE2DA0A5, 0x4C4623A6, 0x5F16D052, 0xAD7D5351 - }; - static final int[] T8_1 = new int[] { - 0x00000000, 0x13A29877, 0x274530EE, 0x34E7A899, - 0x4E8A61DC, 0x5D28F9AB, 0x69CF5132, 0x7A6DC945, - 0x9D14C3B8, 0x8EB65BCF, 0xBA51F356, 0xA9F36B21, - 0xD39EA264, 0xC03C3A13, 0xF4DB928A, 0xE7790AFD, - 0x3FC5F181, 0x2C6769F6, 0x1880C16F, 0x0B225918, - 0x714F905D, 0x62ED082A, 0x560AA0B3, 0x45A838C4, - 0xA2D13239, 0xB173AA4E, 0x859402D7, 0x96369AA0, - 0xEC5B53E5, 0xFFF9CB92, 0xCB1E630B, 0xD8BCFB7C, - 0x7F8BE302, 0x6C297B75, 0x58CED3EC, 0x4B6C4B9B, - 0x310182DE, 0x22A31AA9, 0x1644B230, 0x05E62A47, - 0xE29F20BA, 0xF13DB8CD, 0xC5DA1054, 0xD6788823, - 0xAC154166, 0xBFB7D911, 0x8B507188, 0x98F2E9FF, - 0x404E1283, 0x53EC8AF4, 0x670B226D, 0x74A9BA1A, - 0x0EC4735F, 0x1D66EB28, 0x298143B1, 0x3A23DBC6, - 0xDD5AD13B, 0xCEF8494C, 0xFA1FE1D5, 0xE9BD79A2, - 0x93D0B0E7, 0x80722890, 0xB4958009, 0xA737187E, - 0xFF17C604, 0xECB55E73, 0xD852F6EA, 0xCBF06E9D, - 0xB19DA7D8, 0xA23F3FAF, 0x96D89736, 0x857A0F41, - 0x620305BC, 0x71A19DCB, 0x45463552, 0x56E4AD25, - 0x2C896460, 0x3F2BFC17, 0x0BCC548E, 0x186ECCF9, - 0xC0D23785, 0xD370AFF2, 0xE797076B, 0xF4359F1C, - 0x8E585659, 0x9DFACE2E, 0xA91D66B7, 0xBABFFEC0, - 0x5DC6F43D, 0x4E646C4A, 0x7A83C4D3, 0x69215CA4, - 0x134C95E1, 0x00EE0D96, 0x3409A50F, 0x27AB3D78, - 0x809C2506, 0x933EBD71, 0xA7D915E8, 0xB47B8D9F, - 0xCE1644DA, 0xDDB4DCAD, 0xE9537434, 0xFAF1EC43, - 0x1D88E6BE, 0x0E2A7EC9, 0x3ACDD650, 0x296F4E27, - 0x53028762, 0x40A01F15, 0x7447B78C, 0x67E52FFB, - 0xBF59D487, 0xACFB4CF0, 0x981CE469, 0x8BBE7C1E, - 0xF1D3B55B, 0xE2712D2C, 0xD69685B5, 0xC5341DC2, - 0x224D173F, 0x31EF8F48, 0x050827D1, 0x16AABFA6, - 0x6CC776E3, 0x7F65EE94, 0x4B82460D, 0x5820DE7A, - 0xFBC3FAF9, 0xE861628E, 0xDC86CA17, 0xCF245260, - 0xB5499B25, 0xA6EB0352, 0x920CABCB, 0x81AE33BC, - 0x66D73941, 0x7575A136, 0x419209AF, 0x523091D8, - 0x285D589D, 0x3BFFC0EA, 0x0F186873, 0x1CBAF004, - 0xC4060B78, 0xD7A4930F, 0xE3433B96, 0xF0E1A3E1, - 0x8A8C6AA4, 0x992EF2D3, 0xADC95A4A, 0xBE6BC23D, - 0x5912C8C0, 0x4AB050B7, 0x7E57F82E, 0x6DF56059, - 0x1798A91C, 0x043A316B, 0x30DD99F2, 0x237F0185, - 0x844819FB, 0x97EA818C, 0xA30D2915, 0xB0AFB162, - 0xCAC27827, 0xD960E050, 0xED8748C9, 0xFE25D0BE, - 0x195CDA43, 0x0AFE4234, 0x3E19EAAD, 0x2DBB72DA, - 0x57D6BB9F, 0x447423E8, 0x70938B71, 0x63311306, - 0xBB8DE87A, 0xA82F700D, 0x9CC8D894, 0x8F6A40E3, - 0xF50789A6, 0xE6A511D1, 0xD242B948, 0xC1E0213F, - 0x26992BC2, 0x353BB3B5, 0x01DC1B2C, 0x127E835B, - 0x68134A1E, 0x7BB1D269, 0x4F567AF0, 0x5CF4E287, - 0x04D43CFD, 0x1776A48A, 0x23910C13, 0x30339464, - 0x4A5E5D21, 0x59FCC556, 0x6D1B6DCF, 0x7EB9F5B8, - 0x99C0FF45, 0x8A626732, 0xBE85CFAB, 0xAD2757DC, - 0xD74A9E99, 0xC4E806EE, 0xF00FAE77, 0xE3AD3600, - 0x3B11CD7C, 0x28B3550B, 0x1C54FD92, 0x0FF665E5, - 0x759BACA0, 0x663934D7, 0x52DE9C4E, 0x417C0439, - 0xA6050EC4, 0xB5A796B3, 0x81403E2A, 0x92E2A65D, - 0xE88F6F18, 0xFB2DF76F, 0xCFCA5FF6, 0xDC68C781, - 0x7B5FDFFF, 0x68FD4788, 0x5C1AEF11, 0x4FB87766, - 0x35D5BE23, 0x26772654, 0x12908ECD, 0x013216BA, - 0xE64B1C47, 0xF5E98430, 0xC10E2CA9, 0xD2ACB4DE, - 0xA8C17D9B, 0xBB63E5EC, 0x8F844D75, 0x9C26D502, - 0x449A2E7E, 0x5738B609, 0x63DF1E90, 0x707D86E7, - 0x0A104FA2, 0x19B2D7D5, 0x2D557F4C, 0x3EF7E73B, - 0xD98EEDC6, 0xCA2C75B1, 0xFECBDD28, 0xED69455F, - 0x97048C1A, 0x84A6146D, 0xB041BCF4, 0xA3E32483 - }; - static final int[] T8_2 = new int[] { - 0x00000000, 0xA541927E, 0x4F6F520D, 0xEA2EC073, - 0x9EDEA41A, 0x3B9F3664, 0xD1B1F617, 0x74F06469, - 0x38513EC5, 0x9D10ACBB, 0x773E6CC8, 0xD27FFEB6, - 0xA68F9ADF, 0x03CE08A1, 0xE9E0C8D2, 0x4CA15AAC, - 0x70A27D8A, 0xD5E3EFF4, 0x3FCD2F87, 0x9A8CBDF9, - 0xEE7CD990, 0x4B3D4BEE, 0xA1138B9D, 0x045219E3, - 0x48F3434F, 0xEDB2D131, 0x079C1142, 0xA2DD833C, - 0xD62DE755, 0x736C752B, 0x9942B558, 0x3C032726, - 0xE144FB14, 0x4405696A, 0xAE2BA919, 0x0B6A3B67, - 0x7F9A5F0E, 0xDADBCD70, 0x30F50D03, 0x95B49F7D, - 0xD915C5D1, 0x7C5457AF, 0x967A97DC, 0x333B05A2, - 0x47CB61CB, 0xE28AF3B5, 0x08A433C6, 0xADE5A1B8, - 0x91E6869E, 0x34A714E0, 0xDE89D493, 0x7BC846ED, - 0x0F382284, 0xAA79B0FA, 0x40577089, 0xE516E2F7, - 0xA9B7B85B, 0x0CF62A25, 0xE6D8EA56, 0x43997828, - 0x37691C41, 0x92288E3F, 0x78064E4C, 0xDD47DC32, - 0xC76580D9, 0x622412A7, 0x880AD2D4, 0x2D4B40AA, - 0x59BB24C3, 0xFCFAB6BD, 0x16D476CE, 0xB395E4B0, - 0xFF34BE1C, 0x5A752C62, 0xB05BEC11, 0x151A7E6F, - 0x61EA1A06, 0xC4AB8878, 0x2E85480B, 0x8BC4DA75, - 0xB7C7FD53, 0x12866F2D, 0xF8A8AF5E, 0x5DE93D20, - 0x29195949, 0x8C58CB37, 0x66760B44, 0xC337993A, - 0x8F96C396, 0x2AD751E8, 0xC0F9919B, 0x65B803E5, - 0x1148678C, 0xB409F5F2, 0x5E273581, 0xFB66A7FF, - 0x26217BCD, 0x8360E9B3, 0x694E29C0, 0xCC0FBBBE, - 0xB8FFDFD7, 0x1DBE4DA9, 0xF7908DDA, 0x52D11FA4, - 0x1E704508, 0xBB31D776, 0x511F1705, 0xF45E857B, - 0x80AEE112, 0x25EF736C, 0xCFC1B31F, 0x6A802161, - 0x56830647, 0xF3C29439, 0x19EC544A, 0xBCADC634, - 0xC85DA25D, 0x6D1C3023, 0x8732F050, 0x2273622E, - 0x6ED23882, 0xCB93AAFC, 0x21BD6A8F, 0x84FCF8F1, - 0xF00C9C98, 0x554D0EE6, 0xBF63CE95, 0x1A225CEB, - 0x8B277743, 0x2E66E53D, 0xC448254E, 0x6109B730, - 0x15F9D359, 0xB0B84127, 0x5A968154, 0xFFD7132A, - 0xB3764986, 0x1637DBF8, 0xFC191B8B, 0x595889F5, - 0x2DA8ED9C, 0x88E97FE2, 0x62C7BF91, 0xC7862DEF, - 0xFB850AC9, 0x5EC498B7, 0xB4EA58C4, 0x11ABCABA, - 0x655BAED3, 0xC01A3CAD, 0x2A34FCDE, 0x8F756EA0, - 0xC3D4340C, 0x6695A672, 0x8CBB6601, 0x29FAF47F, - 0x5D0A9016, 0xF84B0268, 0x1265C21B, 0xB7245065, - 0x6A638C57, 0xCF221E29, 0x250CDE5A, 0x804D4C24, - 0xF4BD284D, 0x51FCBA33, 0xBBD27A40, 0x1E93E83E, - 0x5232B292, 0xF77320EC, 0x1D5DE09F, 0xB81C72E1, - 0xCCEC1688, 0x69AD84F6, 0x83834485, 0x26C2D6FB, - 0x1AC1F1DD, 0xBF8063A3, 0x55AEA3D0, 0xF0EF31AE, - 0x841F55C7, 0x215EC7B9, 0xCB7007CA, 0x6E3195B4, - 0x2290CF18, 0x87D15D66, 0x6DFF9D15, 0xC8BE0F6B, - 0xBC4E6B02, 0x190FF97C, 0xF321390F, 0x5660AB71, - 0x4C42F79A, 0xE90365E4, 0x032DA597, 0xA66C37E9, - 0xD29C5380, 0x77DDC1FE, 0x9DF3018D, 0x38B293F3, - 0x7413C95F, 0xD1525B21, 0x3B7C9B52, 0x9E3D092C, - 0xEACD6D45, 0x4F8CFF3B, 0xA5A23F48, 0x00E3AD36, - 0x3CE08A10, 0x99A1186E, 0x738FD81D, 0xD6CE4A63, - 0xA23E2E0A, 0x077FBC74, 0xED517C07, 0x4810EE79, - 0x04B1B4D5, 0xA1F026AB, 0x4BDEE6D8, 0xEE9F74A6, - 0x9A6F10CF, 0x3F2E82B1, 0xD50042C2, 0x7041D0BC, - 0xAD060C8E, 0x08479EF0, 0xE2695E83, 0x4728CCFD, - 0x33D8A894, 0x96993AEA, 0x7CB7FA99, 0xD9F668E7, - 0x9557324B, 0x3016A035, 0xDA386046, 0x7F79F238, - 0x0B899651, 0xAEC8042F, 0x44E6C45C, 0xE1A75622, - 0xDDA47104, 0x78E5E37A, 0x92CB2309, 0x378AB177, - 0x437AD51E, 0xE63B4760, 0x0C158713, 0xA954156D, - 0xE5F54FC1, 0x40B4DDBF, 0xAA9A1DCC, 0x0FDB8FB2, - 0x7B2BEBDB, 0xDE6A79A5, 0x3444B9D6, 0x91052BA8 - }; - static final int[] T8_3 = new int[] { - 0x00000000, 0xDD45AAB8, 0xBF672381, 0x62228939, - 0x7B2231F3, 0xA6679B4B, 0xC4451272, 0x1900B8CA, - 0xF64463E6, 0x2B01C95E, 0x49234067, 0x9466EADF, - 0x8D665215, 0x5023F8AD, 0x32017194, 0xEF44DB2C, - 0xE964B13D, 0x34211B85, 0x560392BC, 0x8B463804, - 0x924680CE, 0x4F032A76, 0x2D21A34F, 0xF06409F7, - 0x1F20D2DB, 0xC2657863, 0xA047F15A, 0x7D025BE2, - 0x6402E328, 0xB9474990, 0xDB65C0A9, 0x06206A11, - 0xD725148B, 0x0A60BE33, 0x6842370A, 0xB5079DB2, - 0xAC072578, 0x71428FC0, 0x136006F9, 0xCE25AC41, - 0x2161776D, 0xFC24DDD5, 0x9E0654EC, 0x4343FE54, - 0x5A43469E, 0x8706EC26, 0xE524651F, 0x3861CFA7, - 0x3E41A5B6, 0xE3040F0E, 0x81268637, 0x5C632C8F, - 0x45639445, 0x98263EFD, 0xFA04B7C4, 0x27411D7C, - 0xC805C650, 0x15406CE8, 0x7762E5D1, 0xAA274F69, - 0xB327F7A3, 0x6E625D1B, 0x0C40D422, 0xD1057E9A, - 0xABA65FE7, 0x76E3F55F, 0x14C17C66, 0xC984D6DE, - 0xD0846E14, 0x0DC1C4AC, 0x6FE34D95, 0xB2A6E72D, - 0x5DE23C01, 0x80A796B9, 0xE2851F80, 0x3FC0B538, - 0x26C00DF2, 0xFB85A74A, 0x99A72E73, 0x44E284CB, - 0x42C2EEDA, 0x9F874462, 0xFDA5CD5B, 0x20E067E3, - 0x39E0DF29, 0xE4A57591, 0x8687FCA8, 0x5BC25610, - 0xB4868D3C, 0x69C32784, 0x0BE1AEBD, 0xD6A40405, - 0xCFA4BCCF, 0x12E11677, 0x70C39F4E, 0xAD8635F6, - 0x7C834B6C, 0xA1C6E1D4, 0xC3E468ED, 0x1EA1C255, - 0x07A17A9F, 0xDAE4D027, 0xB8C6591E, 0x6583F3A6, - 0x8AC7288A, 0x57828232, 0x35A00B0B, 0xE8E5A1B3, - 0xF1E51979, 0x2CA0B3C1, 0x4E823AF8, 0x93C79040, - 0x95E7FA51, 0x48A250E9, 0x2A80D9D0, 0xF7C57368, - 0xEEC5CBA2, 0x3380611A, 0x51A2E823, 0x8CE7429B, - 0x63A399B7, 0xBEE6330F, 0xDCC4BA36, 0x0181108E, - 0x1881A844, 0xC5C402FC, 0xA7E68BC5, 0x7AA3217D, - 0x52A0C93F, 0x8FE56387, 0xEDC7EABE, 0x30824006, - 0x2982F8CC, 0xF4C75274, 0x96E5DB4D, 0x4BA071F5, - 0xA4E4AAD9, 0x79A10061, 0x1B838958, 0xC6C623E0, - 0xDFC69B2A, 0x02833192, 0x60A1B8AB, 0xBDE41213, - 0xBBC47802, 0x6681D2BA, 0x04A35B83, 0xD9E6F13B, - 0xC0E649F1, 0x1DA3E349, 0x7F816A70, 0xA2C4C0C8, - 0x4D801BE4, 0x90C5B15C, 0xF2E73865, 0x2FA292DD, - 0x36A22A17, 0xEBE780AF, 0x89C50996, 0x5480A32E, - 0x8585DDB4, 0x58C0770C, 0x3AE2FE35, 0xE7A7548D, - 0xFEA7EC47, 0x23E246FF, 0x41C0CFC6, 0x9C85657E, - 0x73C1BE52, 0xAE8414EA, 0xCCA69DD3, 0x11E3376B, - 0x08E38FA1, 0xD5A62519, 0xB784AC20, 0x6AC10698, - 0x6CE16C89, 0xB1A4C631, 0xD3864F08, 0x0EC3E5B0, - 0x17C35D7A, 0xCA86F7C2, 0xA8A47EFB, 0x75E1D443, - 0x9AA50F6F, 0x47E0A5D7, 0x25C22CEE, 0xF8878656, - 0xE1873E9C, 0x3CC29424, 0x5EE01D1D, 0x83A5B7A5, - 0xF90696D8, 0x24433C60, 0x4661B559, 0x9B241FE1, - 0x8224A72B, 0x5F610D93, 0x3D4384AA, 0xE0062E12, - 0x0F42F53E, 0xD2075F86, 0xB025D6BF, 0x6D607C07, - 0x7460C4CD, 0xA9256E75, 0xCB07E74C, 0x16424DF4, - 0x106227E5, 0xCD278D5D, 0xAF050464, 0x7240AEDC, - 0x6B401616, 0xB605BCAE, 0xD4273597, 0x09629F2F, - 0xE6264403, 0x3B63EEBB, 0x59416782, 0x8404CD3A, - 0x9D0475F0, 0x4041DF48, 0x22635671, 0xFF26FCC9, - 0x2E238253, 0xF36628EB, 0x9144A1D2, 0x4C010B6A, - 0x5501B3A0, 0x88441918, 0xEA669021, 0x37233A99, - 0xD867E1B5, 0x05224B0D, 0x6700C234, 0xBA45688C, - 0xA345D046, 0x7E007AFE, 0x1C22F3C7, 0xC167597F, - 0xC747336E, 0x1A0299D6, 0x782010EF, 0xA565BA57, - 0xBC65029D, 0x6120A825, 0x0302211C, 0xDE478BA4, - 0x31035088, 0xEC46FA30, 0x8E647309, 0x5321D9B1, - 0x4A21617B, 0x9764CBC3, 0xF54642FA, 0x2803E842 - }; - static final int[] T8_4 = new int[] { - 0x00000000, 0x38116FAC, 0x7022DF58, 0x4833B0F4, - 0xE045BEB0, 0xD854D11C, 0x906761E8, 0xA8760E44, - 0xC5670B91, 0xFD76643D, 0xB545D4C9, 0x8D54BB65, - 0x2522B521, 0x1D33DA8D, 0x55006A79, 0x6D1105D5, - 0x8F2261D3, 0xB7330E7F, 0xFF00BE8B, 0xC711D127, - 0x6F67DF63, 0x5776B0CF, 0x1F45003B, 0x27546F97, - 0x4A456A42, 0x725405EE, 0x3A67B51A, 0x0276DAB6, - 0xAA00D4F2, 0x9211BB5E, 0xDA220BAA, 0xE2336406, - 0x1BA8B557, 0x23B9DAFB, 0x6B8A6A0F, 0x539B05A3, - 0xFBED0BE7, 0xC3FC644B, 0x8BCFD4BF, 0xB3DEBB13, - 0xDECFBEC6, 0xE6DED16A, 0xAEED619E, 0x96FC0E32, - 0x3E8A0076, 0x069B6FDA, 0x4EA8DF2E, 0x76B9B082, - 0x948AD484, 0xAC9BBB28, 0xE4A80BDC, 0xDCB96470, - 0x74CF6A34, 0x4CDE0598, 0x04EDB56C, 0x3CFCDAC0, - 0x51EDDF15, 0x69FCB0B9, 0x21CF004D, 0x19DE6FE1, - 0xB1A861A5, 0x89B90E09, 0xC18ABEFD, 0xF99BD151, - 0x37516AAE, 0x0F400502, 0x4773B5F6, 0x7F62DA5A, - 0xD714D41E, 0xEF05BBB2, 0xA7360B46, 0x9F2764EA, - 0xF236613F, 0xCA270E93, 0x8214BE67, 0xBA05D1CB, - 0x1273DF8F, 0x2A62B023, 0x625100D7, 0x5A406F7B, - 0xB8730B7D, 0x806264D1, 0xC851D425, 0xF040BB89, - 0x5836B5CD, 0x6027DA61, 0x28146A95, 0x10050539, - 0x7D1400EC, 0x45056F40, 0x0D36DFB4, 0x3527B018, - 0x9D51BE5C, 0xA540D1F0, 0xED736104, 0xD5620EA8, - 0x2CF9DFF9, 0x14E8B055, 0x5CDB00A1, 0x64CA6F0D, - 0xCCBC6149, 0xF4AD0EE5, 0xBC9EBE11, 0x848FD1BD, - 0xE99ED468, 0xD18FBBC4, 0x99BC0B30, 0xA1AD649C, - 0x09DB6AD8, 0x31CA0574, 0x79F9B580, 0x41E8DA2C, - 0xA3DBBE2A, 0x9BCAD186, 0xD3F96172, 0xEBE80EDE, - 0x439E009A, 0x7B8F6F36, 0x33BCDFC2, 0x0BADB06E, - 0x66BCB5BB, 0x5EADDA17, 0x169E6AE3, 0x2E8F054F, - 0x86F90B0B, 0xBEE864A7, 0xF6DBD453, 0xCECABBFF, - 0x6EA2D55C, 0x56B3BAF0, 0x1E800A04, 0x269165A8, - 0x8EE76BEC, 0xB6F60440, 0xFEC5B4B4, 0xC6D4DB18, - 0xABC5DECD, 0x93D4B161, 0xDBE70195, 0xE3F66E39, - 0x4B80607D, 0x73910FD1, 0x3BA2BF25, 0x03B3D089, - 0xE180B48F, 0xD991DB23, 0x91A26BD7, 0xA9B3047B, - 0x01C50A3F, 0x39D46593, 0x71E7D567, 0x49F6BACB, - 0x24E7BF1E, 0x1CF6D0B2, 0x54C56046, 0x6CD40FEA, - 0xC4A201AE, 0xFCB36E02, 0xB480DEF6, 0x8C91B15A, - 0x750A600B, 0x4D1B0FA7, 0x0528BF53, 0x3D39D0FF, - 0x954FDEBB, 0xAD5EB117, 0xE56D01E3, 0xDD7C6E4F, - 0xB06D6B9A, 0x887C0436, 0xC04FB4C2, 0xF85EDB6E, - 0x5028D52A, 0x6839BA86, 0x200A0A72, 0x181B65DE, - 0xFA2801D8, 0xC2396E74, 0x8A0ADE80, 0xB21BB12C, - 0x1A6DBF68, 0x227CD0C4, 0x6A4F6030, 0x525E0F9C, - 0x3F4F0A49, 0x075E65E5, 0x4F6DD511, 0x777CBABD, - 0xDF0AB4F9, 0xE71BDB55, 0xAF286BA1, 0x9739040D, - 0x59F3BFF2, 0x61E2D05E, 0x29D160AA, 0x11C00F06, - 0xB9B60142, 0x81A76EEE, 0xC994DE1A, 0xF185B1B6, - 0x9C94B463, 0xA485DBCF, 0xECB66B3B, 0xD4A70497, - 0x7CD10AD3, 0x44C0657F, 0x0CF3D58B, 0x34E2BA27, - 0xD6D1DE21, 0xEEC0B18D, 0xA6F30179, 0x9EE26ED5, - 0x36946091, 0x0E850F3D, 0x46B6BFC9, 0x7EA7D065, - 0x13B6D5B0, 0x2BA7BA1C, 0x63940AE8, 0x5B856544, - 0xF3F36B00, 0xCBE204AC, 0x83D1B458, 0xBBC0DBF4, - 0x425B0AA5, 0x7A4A6509, 0x3279D5FD, 0x0A68BA51, - 0xA21EB415, 0x9A0FDBB9, 0xD23C6B4D, 0xEA2D04E1, - 0x873C0134, 0xBF2D6E98, 0xF71EDE6C, 0xCF0FB1C0, - 0x6779BF84, 0x5F68D028, 0x175B60DC, 0x2F4A0F70, - 0xCD796B76, 0xF56804DA, 0xBD5BB42E, 0x854ADB82, - 0x2D3CD5C6, 0x152DBA6A, 0x5D1E0A9E, 0x650F6532, - 0x081E60E7, 0x300F0F4B, 0x783CBFBF, 0x402DD013, - 0xE85BDE57, 0xD04AB1FB, 0x9879010F, 0xA0686EA3 - }; - static final int[] T8_5 = new int[] { - 0x00000000, 0xEF306B19, 0xDB8CA0C3, 0x34BCCBDA, - 0xB2F53777, 0x5DC55C6E, 0x697997B4, 0x8649FCAD, - 0x6006181F, 0x8F367306, 0xBB8AB8DC, 0x54BAD3C5, - 0xD2F32F68, 0x3DC34471, 0x097F8FAB, 0xE64FE4B2, - 0xC00C303E, 0x2F3C5B27, 0x1B8090FD, 0xF4B0FBE4, - 0x72F90749, 0x9DC96C50, 0xA975A78A, 0x4645CC93, - 0xA00A2821, 0x4F3A4338, 0x7B8688E2, 0x94B6E3FB, - 0x12FF1F56, 0xFDCF744F, 0xC973BF95, 0x2643D48C, - 0x85F4168D, 0x6AC47D94, 0x5E78B64E, 0xB148DD57, - 0x370121FA, 0xD8314AE3, 0xEC8D8139, 0x03BDEA20, - 0xE5F20E92, 0x0AC2658B, 0x3E7EAE51, 0xD14EC548, - 0x570739E5, 0xB83752FC, 0x8C8B9926, 0x63BBF23F, - 0x45F826B3, 0xAAC84DAA, 0x9E748670, 0x7144ED69, - 0xF70D11C4, 0x183D7ADD, 0x2C81B107, 0xC3B1DA1E, - 0x25FE3EAC, 0xCACE55B5, 0xFE729E6F, 0x1142F576, - 0x970B09DB, 0x783B62C2, 0x4C87A918, 0xA3B7C201, - 0x0E045BEB, 0xE13430F2, 0xD588FB28, 0x3AB89031, - 0xBCF16C9C, 0x53C10785, 0x677DCC5F, 0x884DA746, - 0x6E0243F4, 0x813228ED, 0xB58EE337, 0x5ABE882E, - 0xDCF77483, 0x33C71F9A, 0x077BD440, 0xE84BBF59, - 0xCE086BD5, 0x213800CC, 0x1584CB16, 0xFAB4A00F, - 0x7CFD5CA2, 0x93CD37BB, 0xA771FC61, 0x48419778, - 0xAE0E73CA, 0x413E18D3, 0x7582D309, 0x9AB2B810, - 0x1CFB44BD, 0xF3CB2FA4, 0xC777E47E, 0x28478F67, - 0x8BF04D66, 0x64C0267F, 0x507CEDA5, 0xBF4C86BC, - 0x39057A11, 0xD6351108, 0xE289DAD2, 0x0DB9B1CB, - 0xEBF65579, 0x04C63E60, 0x307AF5BA, 0xDF4A9EA3, - 0x5903620E, 0xB6330917, 0x828FC2CD, 0x6DBFA9D4, - 0x4BFC7D58, 0xA4CC1641, 0x9070DD9B, 0x7F40B682, - 0xF9094A2F, 0x16392136, 0x2285EAEC, 0xCDB581F5, - 0x2BFA6547, 0xC4CA0E5E, 0xF076C584, 0x1F46AE9D, - 0x990F5230, 0x763F3929, 0x4283F2F3, 0xADB399EA, - 0x1C08B7D6, 0xF338DCCF, 0xC7841715, 0x28B47C0C, - 0xAEFD80A1, 0x41CDEBB8, 0x75712062, 0x9A414B7B, - 0x7C0EAFC9, 0x933EC4D0, 0xA7820F0A, 0x48B26413, - 0xCEFB98BE, 0x21CBF3A7, 0x1577387D, 0xFA475364, - 0xDC0487E8, 0x3334ECF1, 0x0788272B, 0xE8B84C32, - 0x6EF1B09F, 0x81C1DB86, 0xB57D105C, 0x5A4D7B45, - 0xBC029FF7, 0x5332F4EE, 0x678E3F34, 0x88BE542D, - 0x0EF7A880, 0xE1C7C399, 0xD57B0843, 0x3A4B635A, - 0x99FCA15B, 0x76CCCA42, 0x42700198, 0xAD406A81, - 0x2B09962C, 0xC439FD35, 0xF08536EF, 0x1FB55DF6, - 0xF9FAB944, 0x16CAD25D, 0x22761987, 0xCD46729E, - 0x4B0F8E33, 0xA43FE52A, 0x90832EF0, 0x7FB345E9, - 0x59F09165, 0xB6C0FA7C, 0x827C31A6, 0x6D4C5ABF, - 0xEB05A612, 0x0435CD0B, 0x308906D1, 0xDFB96DC8, - 0x39F6897A, 0xD6C6E263, 0xE27A29B9, 0x0D4A42A0, - 0x8B03BE0D, 0x6433D514, 0x508F1ECE, 0xBFBF75D7, - 0x120CEC3D, 0xFD3C8724, 0xC9804CFE, 0x26B027E7, - 0xA0F9DB4A, 0x4FC9B053, 0x7B757B89, 0x94451090, - 0x720AF422, 0x9D3A9F3B, 0xA98654E1, 0x46B63FF8, - 0xC0FFC355, 0x2FCFA84C, 0x1B736396, 0xF443088F, - 0xD200DC03, 0x3D30B71A, 0x098C7CC0, 0xE6BC17D9, - 0x60F5EB74, 0x8FC5806D, 0xBB794BB7, 0x544920AE, - 0xB206C41C, 0x5D36AF05, 0x698A64DF, 0x86BA0FC6, - 0x00F3F36B, 0xEFC39872, 0xDB7F53A8, 0x344F38B1, - 0x97F8FAB0, 0x78C891A9, 0x4C745A73, 0xA344316A, - 0x250DCDC7, 0xCA3DA6DE, 0xFE816D04, 0x11B1061D, - 0xF7FEE2AF, 0x18CE89B6, 0x2C72426C, 0xC3422975, - 0x450BD5D8, 0xAA3BBEC1, 0x9E87751B, 0x71B71E02, - 0x57F4CA8E, 0xB8C4A197, 0x8C786A4D, 0x63480154, - 0xE501FDF9, 0x0A3196E0, 0x3E8D5D3A, 0xD1BD3623, - 0x37F2D291, 0xD8C2B988, 0xEC7E7252, 0x034E194B, - 0x8507E5E6, 0x6A378EFF, 0x5E8B4525, 0xB1BB2E3C - }; - static final int[] T8_6 = new int[] { - 0x00000000, 0x68032CC8, 0xD0065990, 0xB8057558, - 0xA5E0C5D1, 0xCDE3E919, 0x75E69C41, 0x1DE5B089, - 0x4E2DFD53, 0x262ED19B, 0x9E2BA4C3, 0xF628880B, - 0xEBCD3882, 0x83CE144A, 0x3BCB6112, 0x53C84DDA, - 0x9C5BFAA6, 0xF458D66E, 0x4C5DA336, 0x245E8FFE, - 0x39BB3F77, 0x51B813BF, 0xE9BD66E7, 0x81BE4A2F, - 0xD27607F5, 0xBA752B3D, 0x02705E65, 0x6A7372AD, - 0x7796C224, 0x1F95EEEC, 0xA7909BB4, 0xCF93B77C, - 0x3D5B83BD, 0x5558AF75, 0xED5DDA2D, 0x855EF6E5, - 0x98BB466C, 0xF0B86AA4, 0x48BD1FFC, 0x20BE3334, - 0x73767EEE, 0x1B755226, 0xA370277E, 0xCB730BB6, - 0xD696BB3F, 0xBE9597F7, 0x0690E2AF, 0x6E93CE67, - 0xA100791B, 0xC90355D3, 0x7106208B, 0x19050C43, - 0x04E0BCCA, 0x6CE39002, 0xD4E6E55A, 0xBCE5C992, - 0xEF2D8448, 0x872EA880, 0x3F2BDDD8, 0x5728F110, - 0x4ACD4199, 0x22CE6D51, 0x9ACB1809, 0xF2C834C1, - 0x7AB7077A, 0x12B42BB2, 0xAAB15EEA, 0xC2B27222, - 0xDF57C2AB, 0xB754EE63, 0x0F519B3B, 0x6752B7F3, - 0x349AFA29, 0x5C99D6E1, 0xE49CA3B9, 0x8C9F8F71, - 0x917A3FF8, 0xF9791330, 0x417C6668, 0x297F4AA0, - 0xE6ECFDDC, 0x8EEFD114, 0x36EAA44C, 0x5EE98884, - 0x430C380D, 0x2B0F14C5, 0x930A619D, 0xFB094D55, - 0xA8C1008F, 0xC0C22C47, 0x78C7591F, 0x10C475D7, - 0x0D21C55E, 0x6522E996, 0xDD279CCE, 0xB524B006, - 0x47EC84C7, 0x2FEFA80F, 0x97EADD57, 0xFFE9F19F, - 0xE20C4116, 0x8A0F6DDE, 0x320A1886, 0x5A09344E, - 0x09C17994, 0x61C2555C, 0xD9C72004, 0xB1C40CCC, - 0xAC21BC45, 0xC422908D, 0x7C27E5D5, 0x1424C91D, - 0xDBB77E61, 0xB3B452A9, 0x0BB127F1, 0x63B20B39, - 0x7E57BBB0, 0x16549778, 0xAE51E220, 0xC652CEE8, - 0x959A8332, 0xFD99AFFA, 0x459CDAA2, 0x2D9FF66A, - 0x307A46E3, 0x58796A2B, 0xE07C1F73, 0x887F33BB, - 0xF56E0EF4, 0x9D6D223C, 0x25685764, 0x4D6B7BAC, - 0x508ECB25, 0x388DE7ED, 0x808892B5, 0xE88BBE7D, - 0xBB43F3A7, 0xD340DF6F, 0x6B45AA37, 0x034686FF, - 0x1EA33676, 0x76A01ABE, 0xCEA56FE6, 0xA6A6432E, - 0x6935F452, 0x0136D89A, 0xB933ADC2, 0xD130810A, - 0xCCD53183, 0xA4D61D4B, 0x1CD36813, 0x74D044DB, - 0x27180901, 0x4F1B25C9, 0xF71E5091, 0x9F1D7C59, - 0x82F8CCD0, 0xEAFBE018, 0x52FE9540, 0x3AFDB988, - 0xC8358D49, 0xA036A181, 0x1833D4D9, 0x7030F811, - 0x6DD54898, 0x05D66450, 0xBDD31108, 0xD5D03DC0, - 0x8618701A, 0xEE1B5CD2, 0x561E298A, 0x3E1D0542, - 0x23F8B5CB, 0x4BFB9903, 0xF3FEEC5B, 0x9BFDC093, - 0x546E77EF, 0x3C6D5B27, 0x84682E7F, 0xEC6B02B7, - 0xF18EB23E, 0x998D9EF6, 0x2188EBAE, 0x498BC766, - 0x1A438ABC, 0x7240A674, 0xCA45D32C, 0xA246FFE4, - 0xBFA34F6D, 0xD7A063A5, 0x6FA516FD, 0x07A63A35, - 0x8FD9098E, 0xE7DA2546, 0x5FDF501E, 0x37DC7CD6, - 0x2A39CC5F, 0x423AE097, 0xFA3F95CF, 0x923CB907, - 0xC1F4F4DD, 0xA9F7D815, 0x11F2AD4D, 0x79F18185, - 0x6414310C, 0x0C171DC4, 0xB412689C, 0xDC114454, - 0x1382F328, 0x7B81DFE0, 0xC384AAB8, 0xAB878670, - 0xB66236F9, 0xDE611A31, 0x66646F69, 0x0E6743A1, - 0x5DAF0E7B, 0x35AC22B3, 0x8DA957EB, 0xE5AA7B23, - 0xF84FCBAA, 0x904CE762, 0x2849923A, 0x404ABEF2, - 0xB2828A33, 0xDA81A6FB, 0x6284D3A3, 0x0A87FF6B, - 0x17624FE2, 0x7F61632A, 0xC7641672, 0xAF673ABA, - 0xFCAF7760, 0x94AC5BA8, 0x2CA92EF0, 0x44AA0238, - 0x594FB2B1, 0x314C9E79, 0x8949EB21, 0xE14AC7E9, - 0x2ED97095, 0x46DA5C5D, 0xFEDF2905, 0x96DC05CD, - 0x8B39B544, 0xE33A998C, 0x5B3FECD4, 0x333CC01C, - 0x60F48DC6, 0x08F7A10E, 0xB0F2D456, 0xD8F1F89E, - 0xC5144817, 0xAD1764DF, 0x15121187, 0x7D113D4F - }; - static final int[] T8_7 = new int[] { - 0x00000000, 0x493C7D27, 0x9278FA4E, 0xDB448769, - 0x211D826D, 0x6821FF4A, 0xB3657823, 0xFA590504, - 0x423B04DA, 0x0B0779FD, 0xD043FE94, 0x997F83B3, - 0x632686B7, 0x2A1AFB90, 0xF15E7CF9, 0xB86201DE, - 0x847609B4, 0xCD4A7493, 0x160EF3FA, 0x5F328EDD, - 0xA56B8BD9, 0xEC57F6FE, 0x37137197, 0x7E2F0CB0, - 0xC64D0D6E, 0x8F717049, 0x5435F720, 0x1D098A07, - 0xE7508F03, 0xAE6CF224, 0x7528754D, 0x3C14086A, - 0x0D006599, 0x443C18BE, 0x9F789FD7, 0xD644E2F0, - 0x2C1DE7F4, 0x65219AD3, 0xBE651DBA, 0xF759609D, - 0x4F3B6143, 0x06071C64, 0xDD439B0D, 0x947FE62A, - 0x6E26E32E, 0x271A9E09, 0xFC5E1960, 0xB5626447, - 0x89766C2D, 0xC04A110A, 0x1B0E9663, 0x5232EB44, - 0xA86BEE40, 0xE1579367, 0x3A13140E, 0x732F6929, - 0xCB4D68F7, 0x827115D0, 0x593592B9, 0x1009EF9E, - 0xEA50EA9A, 0xA36C97BD, 0x782810D4, 0x31146DF3, - 0x1A00CB32, 0x533CB615, 0x8878317C, 0xC1444C5B, - 0x3B1D495F, 0x72213478, 0xA965B311, 0xE059CE36, - 0x583BCFE8, 0x1107B2CF, 0xCA4335A6, 0x837F4881, - 0x79264D85, 0x301A30A2, 0xEB5EB7CB, 0xA262CAEC, - 0x9E76C286, 0xD74ABFA1, 0x0C0E38C8, 0x453245EF, - 0xBF6B40EB, 0xF6573DCC, 0x2D13BAA5, 0x642FC782, - 0xDC4DC65C, 0x9571BB7B, 0x4E353C12, 0x07094135, - 0xFD504431, 0xB46C3916, 0x6F28BE7F, 0x2614C358, - 0x1700AEAB, 0x5E3CD38C, 0x857854E5, 0xCC4429C2, - 0x361D2CC6, 0x7F2151E1, 0xA465D688, 0xED59ABAF, - 0x553BAA71, 0x1C07D756, 0xC743503F, 0x8E7F2D18, - 0x7426281C, 0x3D1A553B, 0xE65ED252, 0xAF62AF75, - 0x9376A71F, 0xDA4ADA38, 0x010E5D51, 0x48322076, - 0xB26B2572, 0xFB575855, 0x2013DF3C, 0x692FA21B, - 0xD14DA3C5, 0x9871DEE2, 0x4335598B, 0x0A0924AC, - 0xF05021A8, 0xB96C5C8F, 0x6228DBE6, 0x2B14A6C1, - 0x34019664, 0x7D3DEB43, 0xA6796C2A, 0xEF45110D, - 0x151C1409, 0x5C20692E, 0x8764EE47, 0xCE589360, - 0x763A92BE, 0x3F06EF99, 0xE44268F0, 0xAD7E15D7, - 0x572710D3, 0x1E1B6DF4, 0xC55FEA9D, 0x8C6397BA, - 0xB0779FD0, 0xF94BE2F7, 0x220F659E, 0x6B3318B9, - 0x916A1DBD, 0xD856609A, 0x0312E7F3, 0x4A2E9AD4, - 0xF24C9B0A, 0xBB70E62D, 0x60346144, 0x29081C63, - 0xD3511967, 0x9A6D6440, 0x4129E329, 0x08159E0E, - 0x3901F3FD, 0x703D8EDA, 0xAB7909B3, 0xE2457494, - 0x181C7190, 0x51200CB7, 0x8A648BDE, 0xC358F6F9, - 0x7B3AF727, 0x32068A00, 0xE9420D69, 0xA07E704E, - 0x5A27754A, 0x131B086D, 0xC85F8F04, 0x8163F223, - 0xBD77FA49, 0xF44B876E, 0x2F0F0007, 0x66337D20, - 0x9C6A7824, 0xD5560503, 0x0E12826A, 0x472EFF4D, - 0xFF4CFE93, 0xB67083B4, 0x6D3404DD, 0x240879FA, - 0xDE517CFE, 0x976D01D9, 0x4C2986B0, 0x0515FB97, - 0x2E015D56, 0x673D2071, 0xBC79A718, 0xF545DA3F, - 0x0F1CDF3B, 0x4620A21C, 0x9D642575, 0xD4585852, - 0x6C3A598C, 0x250624AB, 0xFE42A3C2, 0xB77EDEE5, - 0x4D27DBE1, 0x041BA6C6, 0xDF5F21AF, 0x96635C88, - 0xAA7754E2, 0xE34B29C5, 0x380FAEAC, 0x7133D38B, - 0x8B6AD68F, 0xC256ABA8, 0x19122CC1, 0x502E51E6, - 0xE84C5038, 0xA1702D1F, 0x7A34AA76, 0x3308D751, - 0xC951D255, 0x806DAF72, 0x5B29281B, 0x1215553C, - 0x230138CF, 0x6A3D45E8, 0xB179C281, 0xF845BFA6, - 0x021CBAA2, 0x4B20C785, 0x906440EC, 0xD9583DCB, - 0x613A3C15, 0x28064132, 0xF342C65B, 0xBA7EBB7C, - 0x4027BE78, 0x091BC35F, 0xD25F4436, 0x9B633911, - 0xA777317B, 0xEE4B4C5C, 0x350FCB35, 0x7C33B612, - 0x866AB316, 0xCF56CE31, 0x14124958, 0x5D2E347F, - 0xE54C35A1, 0xAC704886, 0x7734CFEF, 0x3E08B2C8, - 0xC451B7CC, 0x8D6DCAEB, 0x56294D82, 0x1F1530A5 - }; + /** {@inheritDoc} */ + public void reset() + { + crc = 0xffffffff; + } + + /** {@inheritDoc} */ + public void update(byte[] b, int off, int len) + { + int localCrc = crc; + while (len > 7) { + int c0 = b[off++] ^ localCrc; + int c1 = b[off++] ^ (localCrc >>>= 8); + int c2 = b[off++] ^ (localCrc >>>= 8); + int c3 = b[off++] ^ (localCrc >>>= 8); + localCrc = (T8_7[c0 & 0xff] ^ T8_6[c1 & 0xff]) + ^ (T8_5[c2 & 0xff] ^ T8_4[c3 & 0xff]); + + localCrc ^= (T8_3[b[off++] & 0xff] ^ T8_2[b[off++] & 0xff]) + ^ (T8_1[b[off++] & 0xff] ^ T8_0[b[off++] & 0xff]); + + len -= 8; + } + while (len > 0) { + localCrc = (localCrc >>> 8) ^ T8_0[(localCrc ^ b[off++]) & 0xff]; + len--; + } + + // Publish crc out to object + crc = localCrc; + } + + /** {@inheritDoc} */ + final public void update(int b) + { + crc = (crc >>> 8) ^ T8_0[(crc ^ b) & 0xff]; + } + + // CRC polynomial tables generated by: + // java -cp build/test/classes/:build/classes/ \ + // org.apache.hadoop.util.TestPureJavaCrc32\$Table 82F63B78 + + static final int[] T8_0 = new int[] { + 0x00000000, 0xF26B8303, 0xE13B70F7, 0x1350F3F4, + 0xC79A971F, 0x35F1141C, 0x26A1E7E8, 0xD4CA64EB, + 0x8AD958CF, 0x78B2DBCC, 0x6BE22838, 0x9989AB3B, + 0x4D43CFD0, 0xBF284CD3, 0xAC78BF27, 0x5E133C24, + 0x105EC76F, 0xE235446C, 0xF165B798, 0x030E349B, + 0xD7C45070, 0x25AFD373, 0x36FF2087, 0xC494A384, + 0x9A879FA0, 0x68EC1CA3, 0x7BBCEF57, 0x89D76C54, + 0x5D1D08BF, 0xAF768BBC, 0xBC267848, 0x4E4DFB4B, + 0x20BD8EDE, 0xD2D60DDD, 0xC186FE29, 0x33ED7D2A, + 0xE72719C1, 0x154C9AC2, 0x061C6936, 0xF477EA35, + 0xAA64D611, 0x580F5512, 0x4B5FA6E6, 0xB93425E5, + 0x6DFE410E, 0x9F95C20D, 0x8CC531F9, 0x7EAEB2FA, + 0x30E349B1, 0xC288CAB2, 0xD1D83946, 0x23B3BA45, + 0xF779DEAE, 0x05125DAD, 0x1642AE59, 0xE4292D5A, + 0xBA3A117E, 0x4851927D, 0x5B016189, 0xA96AE28A, + 0x7DA08661, 0x8FCB0562, 0x9C9BF696, 0x6EF07595, + 0x417B1DBC, 0xB3109EBF, 0xA0406D4B, 0x522BEE48, + 0x86E18AA3, 0x748A09A0, 0x67DAFA54, 0x95B17957, + 0xCBA24573, 0x39C9C670, 0x2A993584, 0xD8F2B687, + 0x0C38D26C, 0xFE53516F, 0xED03A29B, 0x1F682198, + 0x5125DAD3, 0xA34E59D0, 0xB01EAA24, 0x42752927, + 0x96BF4DCC, 0x64D4CECF, 0x77843D3B, 0x85EFBE38, + 0xDBFC821C, 0x2997011F, 0x3AC7F2EB, 0xC8AC71E8, + 0x1C661503, 0xEE0D9600, 0xFD5D65F4, 0x0F36E6F7, + 0x61C69362, 0x93AD1061, 0x80FDE395, 0x72966096, + 0xA65C047D, 0x5437877E, 0x4767748A, 0xB50CF789, + 0xEB1FCBAD, 0x197448AE, 0x0A24BB5A, 0xF84F3859, + 0x2C855CB2, 0xDEEEDFB1, 0xCDBE2C45, 0x3FD5AF46, + 0x7198540D, 0x83F3D70E, 0x90A324FA, 0x62C8A7F9, + 0xB602C312, 0x44694011, 0x5739B3E5, 0xA55230E6, + 0xFB410CC2, 0x092A8FC1, 0x1A7A7C35, 0xE811FF36, + 0x3CDB9BDD, 0xCEB018DE, 0xDDE0EB2A, 0x2F8B6829, + 0x82F63B78, 0x709DB87B, 0x63CD4B8F, 0x91A6C88C, + 0x456CAC67, 0xB7072F64, 0xA457DC90, 0x563C5F93, + 0x082F63B7, 0xFA44E0B4, 0xE9141340, 0x1B7F9043, + 0xCFB5F4A8, 0x3DDE77AB, 0x2E8E845F, 0xDCE5075C, + 0x92A8FC17, 0x60C37F14, 0x73938CE0, 0x81F80FE3, + 0x55326B08, 0xA759E80B, 0xB4091BFF, 0x466298FC, + 0x1871A4D8, 0xEA1A27DB, 0xF94AD42F, 0x0B21572C, + 0xDFEB33C7, 0x2D80B0C4, 0x3ED04330, 0xCCBBC033, + 0xA24BB5A6, 0x502036A5, 0x4370C551, 0xB11B4652, + 0x65D122B9, 0x97BAA1BA, 0x84EA524E, 0x7681D14D, + 0x2892ED69, 0xDAF96E6A, 0xC9A99D9E, 0x3BC21E9D, + 0xEF087A76, 0x1D63F975, 0x0E330A81, 0xFC588982, + 0xB21572C9, 0x407EF1CA, 0x532E023E, 0xA145813D, + 0x758FE5D6, 0x87E466D5, 0x94B49521, 0x66DF1622, + 0x38CC2A06, 0xCAA7A905, 0xD9F75AF1, 0x2B9CD9F2, + 0xFF56BD19, 0x0D3D3E1A, 0x1E6DCDEE, 0xEC064EED, + 0xC38D26C4, 0x31E6A5C7, 0x22B65633, 0xD0DDD530, + 0x0417B1DB, 0xF67C32D8, 0xE52CC12C, 0x1747422F, + 0x49547E0B, 0xBB3FFD08, 0xA86F0EFC, 0x5A048DFF, + 0x8ECEE914, 0x7CA56A17, 0x6FF599E3, 0x9D9E1AE0, + 0xD3D3E1AB, 0x21B862A8, 0x32E8915C, 0xC083125F, + 0x144976B4, 0xE622F5B7, 0xF5720643, 0x07198540, + 0x590AB964, 0xAB613A67, 0xB831C993, 0x4A5A4A90, + 0x9E902E7B, 0x6CFBAD78, 0x7FAB5E8C, 0x8DC0DD8F, + 0xE330A81A, 0x115B2B19, 0x020BD8ED, 0xF0605BEE, + 0x24AA3F05, 0xD6C1BC06, 0xC5914FF2, 0x37FACCF1, + 0x69E9F0D5, 0x9B8273D6, 0x88D28022, 0x7AB90321, + 0xAE7367CA, 0x5C18E4C9, 0x4F48173D, 0xBD23943E, + 0xF36E6F75, 0x0105EC76, 0x12551F82, 0xE03E9C81, + 0x34F4F86A, 0xC69F7B69, 0xD5CF889D, 0x27A40B9E, + 0x79B737BA, 0x8BDCB4B9, 0x988C474D, 0x6AE7C44E, + 0xBE2DA0A5, 0x4C4623A6, 0x5F16D052, 0xAD7D5351 + }; + static final int[] T8_1 = new int[] { + 0x00000000, 0x13A29877, 0x274530EE, 0x34E7A899, + 0x4E8A61DC, 0x5D28F9AB, 0x69CF5132, 0x7A6DC945, + 0x9D14C3B8, 0x8EB65BCF, 0xBA51F356, 0xA9F36B21, + 0xD39EA264, 0xC03C3A13, 0xF4DB928A, 0xE7790AFD, + 0x3FC5F181, 0x2C6769F6, 0x1880C16F, 0x0B225918, + 0x714F905D, 0x62ED082A, 0x560AA0B3, 0x45A838C4, + 0xA2D13239, 0xB173AA4E, 0x859402D7, 0x96369AA0, + 0xEC5B53E5, 0xFFF9CB92, 0xCB1E630B, 0xD8BCFB7C, + 0x7F8BE302, 0x6C297B75, 0x58CED3EC, 0x4B6C4B9B, + 0x310182DE, 0x22A31AA9, 0x1644B230, 0x05E62A47, + 0xE29F20BA, 0xF13DB8CD, 0xC5DA1054, 0xD6788823, + 0xAC154166, 0xBFB7D911, 0x8B507188, 0x98F2E9FF, + 0x404E1283, 0x53EC8AF4, 0x670B226D, 0x74A9BA1A, + 0x0EC4735F, 0x1D66EB28, 0x298143B1, 0x3A23DBC6, + 0xDD5AD13B, 0xCEF8494C, 0xFA1FE1D5, 0xE9BD79A2, + 0x93D0B0E7, 0x80722890, 0xB4958009, 0xA737187E, + 0xFF17C604, 0xECB55E73, 0xD852F6EA, 0xCBF06E9D, + 0xB19DA7D8, 0xA23F3FAF, 0x96D89736, 0x857A0F41, + 0x620305BC, 0x71A19DCB, 0x45463552, 0x56E4AD25, + 0x2C896460, 0x3F2BFC17, 0x0BCC548E, 0x186ECCF9, + 0xC0D23785, 0xD370AFF2, 0xE797076B, 0xF4359F1C, + 0x8E585659, 0x9DFACE2E, 0xA91D66B7, 0xBABFFEC0, + 0x5DC6F43D, 0x4E646C4A, 0x7A83C4D3, 0x69215CA4, + 0x134C95E1, 0x00EE0D96, 0x3409A50F, 0x27AB3D78, + 0x809C2506, 0x933EBD71, 0xA7D915E8, 0xB47B8D9F, + 0xCE1644DA, 0xDDB4DCAD, 0xE9537434, 0xFAF1EC43, + 0x1D88E6BE, 0x0E2A7EC9, 0x3ACDD650, 0x296F4E27, + 0x53028762, 0x40A01F15, 0x7447B78C, 0x67E52FFB, + 0xBF59D487, 0xACFB4CF0, 0x981CE469, 0x8BBE7C1E, + 0xF1D3B55B, 0xE2712D2C, 0xD69685B5, 0xC5341DC2, + 0x224D173F, 0x31EF8F48, 0x050827D1, 0x16AABFA6, + 0x6CC776E3, 0x7F65EE94, 0x4B82460D, 0x5820DE7A, + 0xFBC3FAF9, 0xE861628E, 0xDC86CA17, 0xCF245260, + 0xB5499B25, 0xA6EB0352, 0x920CABCB, 0x81AE33BC, + 0x66D73941, 0x7575A136, 0x419209AF, 0x523091D8, + 0x285D589D, 0x3BFFC0EA, 0x0F186873, 0x1CBAF004, + 0xC4060B78, 0xD7A4930F, 0xE3433B96, 0xF0E1A3E1, + 0x8A8C6AA4, 0x992EF2D3, 0xADC95A4A, 0xBE6BC23D, + 0x5912C8C0, 0x4AB050B7, 0x7E57F82E, 0x6DF56059, + 0x1798A91C, 0x043A316B, 0x30DD99F2, 0x237F0185, + 0x844819FB, 0x97EA818C, 0xA30D2915, 0xB0AFB162, + 0xCAC27827, 0xD960E050, 0xED8748C9, 0xFE25D0BE, + 0x195CDA43, 0x0AFE4234, 0x3E19EAAD, 0x2DBB72DA, + 0x57D6BB9F, 0x447423E8, 0x70938B71, 0x63311306, + 0xBB8DE87A, 0xA82F700D, 0x9CC8D894, 0x8F6A40E3, + 0xF50789A6, 0xE6A511D1, 0xD242B948, 0xC1E0213F, + 0x26992BC2, 0x353BB3B5, 0x01DC1B2C, 0x127E835B, + 0x68134A1E, 0x7BB1D269, 0x4F567AF0, 0x5CF4E287, + 0x04D43CFD, 0x1776A48A, 0x23910C13, 0x30339464, + 0x4A5E5D21, 0x59FCC556, 0x6D1B6DCF, 0x7EB9F5B8, + 0x99C0FF45, 0x8A626732, 0xBE85CFAB, 0xAD2757DC, + 0xD74A9E99, 0xC4E806EE, 0xF00FAE77, 0xE3AD3600, + 0x3B11CD7C, 0x28B3550B, 0x1C54FD92, 0x0FF665E5, + 0x759BACA0, 0x663934D7, 0x52DE9C4E, 0x417C0439, + 0xA6050EC4, 0xB5A796B3, 0x81403E2A, 0x92E2A65D, + 0xE88F6F18, 0xFB2DF76F, 0xCFCA5FF6, 0xDC68C781, + 0x7B5FDFFF, 0x68FD4788, 0x5C1AEF11, 0x4FB87766, + 0x35D5BE23, 0x26772654, 0x12908ECD, 0x013216BA, + 0xE64B1C47, 0xF5E98430, 0xC10E2CA9, 0xD2ACB4DE, + 0xA8C17D9B, 0xBB63E5EC, 0x8F844D75, 0x9C26D502, + 0x449A2E7E, 0x5738B609, 0x63DF1E90, 0x707D86E7, + 0x0A104FA2, 0x19B2D7D5, 0x2D557F4C, 0x3EF7E73B, + 0xD98EEDC6, 0xCA2C75B1, 0xFECBDD28, 0xED69455F, + 0x97048C1A, 0x84A6146D, 0xB041BCF4, 0xA3E32483 + }; + static final int[] T8_2 = new int[] { + 0x00000000, 0xA541927E, 0x4F6F520D, 0xEA2EC073, + 0x9EDEA41A, 0x3B9F3664, 0xD1B1F617, 0x74F06469, + 0x38513EC5, 0x9D10ACBB, 0x773E6CC8, 0xD27FFEB6, + 0xA68F9ADF, 0x03CE08A1, 0xE9E0C8D2, 0x4CA15AAC, + 0x70A27D8A, 0xD5E3EFF4, 0x3FCD2F87, 0x9A8CBDF9, + 0xEE7CD990, 0x4B3D4BEE, 0xA1138B9D, 0x045219E3, + 0x48F3434F, 0xEDB2D131, 0x079C1142, 0xA2DD833C, + 0xD62DE755, 0x736C752B, 0x9942B558, 0x3C032726, + 0xE144FB14, 0x4405696A, 0xAE2BA919, 0x0B6A3B67, + 0x7F9A5F0E, 0xDADBCD70, 0x30F50D03, 0x95B49F7D, + 0xD915C5D1, 0x7C5457AF, 0x967A97DC, 0x333B05A2, + 0x47CB61CB, 0xE28AF3B5, 0x08A433C6, 0xADE5A1B8, + 0x91E6869E, 0x34A714E0, 0xDE89D493, 0x7BC846ED, + 0x0F382284, 0xAA79B0FA, 0x40577089, 0xE516E2F7, + 0xA9B7B85B, 0x0CF62A25, 0xE6D8EA56, 0x43997828, + 0x37691C41, 0x92288E3F, 0x78064E4C, 0xDD47DC32, + 0xC76580D9, 0x622412A7, 0x880AD2D4, 0x2D4B40AA, + 0x59BB24C3, 0xFCFAB6BD, 0x16D476CE, 0xB395E4B0, + 0xFF34BE1C, 0x5A752C62, 0xB05BEC11, 0x151A7E6F, + 0x61EA1A06, 0xC4AB8878, 0x2E85480B, 0x8BC4DA75, + 0xB7C7FD53, 0x12866F2D, 0xF8A8AF5E, 0x5DE93D20, + 0x29195949, 0x8C58CB37, 0x66760B44, 0xC337993A, + 0x8F96C396, 0x2AD751E8, 0xC0F9919B, 0x65B803E5, + 0x1148678C, 0xB409F5F2, 0x5E273581, 0xFB66A7FF, + 0x26217BCD, 0x8360E9B3, 0x694E29C0, 0xCC0FBBBE, + 0xB8FFDFD7, 0x1DBE4DA9, 0xF7908DDA, 0x52D11FA4, + 0x1E704508, 0xBB31D776, 0x511F1705, 0xF45E857B, + 0x80AEE112, 0x25EF736C, 0xCFC1B31F, 0x6A802161, + 0x56830647, 0xF3C29439, 0x19EC544A, 0xBCADC634, + 0xC85DA25D, 0x6D1C3023, 0x8732F050, 0x2273622E, + 0x6ED23882, 0xCB93AAFC, 0x21BD6A8F, 0x84FCF8F1, + 0xF00C9C98, 0x554D0EE6, 0xBF63CE95, 0x1A225CEB, + 0x8B277743, 0x2E66E53D, 0xC448254E, 0x6109B730, + 0x15F9D359, 0xB0B84127, 0x5A968154, 0xFFD7132A, + 0xB3764986, 0x1637DBF8, 0xFC191B8B, 0x595889F5, + 0x2DA8ED9C, 0x88E97FE2, 0x62C7BF91, 0xC7862DEF, + 0xFB850AC9, 0x5EC498B7, 0xB4EA58C4, 0x11ABCABA, + 0x655BAED3, 0xC01A3CAD, 0x2A34FCDE, 0x8F756EA0, + 0xC3D4340C, 0x6695A672, 0x8CBB6601, 0x29FAF47F, + 0x5D0A9016, 0xF84B0268, 0x1265C21B, 0xB7245065, + 0x6A638C57, 0xCF221E29, 0x250CDE5A, 0x804D4C24, + 0xF4BD284D, 0x51FCBA33, 0xBBD27A40, 0x1E93E83E, + 0x5232B292, 0xF77320EC, 0x1D5DE09F, 0xB81C72E1, + 0xCCEC1688, 0x69AD84F6, 0x83834485, 0x26C2D6FB, + 0x1AC1F1DD, 0xBF8063A3, 0x55AEA3D0, 0xF0EF31AE, + 0x841F55C7, 0x215EC7B9, 0xCB7007CA, 0x6E3195B4, + 0x2290CF18, 0x87D15D66, 0x6DFF9D15, 0xC8BE0F6B, + 0xBC4E6B02, 0x190FF97C, 0xF321390F, 0x5660AB71, + 0x4C42F79A, 0xE90365E4, 0x032DA597, 0xA66C37E9, + 0xD29C5380, 0x77DDC1FE, 0x9DF3018D, 0x38B293F3, + 0x7413C95F, 0xD1525B21, 0x3B7C9B52, 0x9E3D092C, + 0xEACD6D45, 0x4F8CFF3B, 0xA5A23F48, 0x00E3AD36, + 0x3CE08A10, 0x99A1186E, 0x738FD81D, 0xD6CE4A63, + 0xA23E2E0A, 0x077FBC74, 0xED517C07, 0x4810EE79, + 0x04B1B4D5, 0xA1F026AB, 0x4BDEE6D8, 0xEE9F74A6, + 0x9A6F10CF, 0x3F2E82B1, 0xD50042C2, 0x7041D0BC, + 0xAD060C8E, 0x08479EF0, 0xE2695E83, 0x4728CCFD, + 0x33D8A894, 0x96993AEA, 0x7CB7FA99, 0xD9F668E7, + 0x9557324B, 0x3016A035, 0xDA386046, 0x7F79F238, + 0x0B899651, 0xAEC8042F, 0x44E6C45C, 0xE1A75622, + 0xDDA47104, 0x78E5E37A, 0x92CB2309, 0x378AB177, + 0x437AD51E, 0xE63B4760, 0x0C158713, 0xA954156D, + 0xE5F54FC1, 0x40B4DDBF, 0xAA9A1DCC, 0x0FDB8FB2, + 0x7B2BEBDB, 0xDE6A79A5, 0x3444B9D6, 0x91052BA8 + }; + static final int[] T8_3 = new int[] { + 0x00000000, 0xDD45AAB8, 0xBF672381, 0x62228939, + 0x7B2231F3, 0xA6679B4B, 0xC4451272, 0x1900B8CA, + 0xF64463E6, 0x2B01C95E, 0x49234067, 0x9466EADF, + 0x8D665215, 0x5023F8AD, 0x32017194, 0xEF44DB2C, + 0xE964B13D, 0x34211B85, 0x560392BC, 0x8B463804, + 0x924680CE, 0x4F032A76, 0x2D21A34F, 0xF06409F7, + 0x1F20D2DB, 0xC2657863, 0xA047F15A, 0x7D025BE2, + 0x6402E328, 0xB9474990, 0xDB65C0A9, 0x06206A11, + 0xD725148B, 0x0A60BE33, 0x6842370A, 0xB5079DB2, + 0xAC072578, 0x71428FC0, 0x136006F9, 0xCE25AC41, + 0x2161776D, 0xFC24DDD5, 0x9E0654EC, 0x4343FE54, + 0x5A43469E, 0x8706EC26, 0xE524651F, 0x3861CFA7, + 0x3E41A5B6, 0xE3040F0E, 0x81268637, 0x5C632C8F, + 0x45639445, 0x98263EFD, 0xFA04B7C4, 0x27411D7C, + 0xC805C650, 0x15406CE8, 0x7762E5D1, 0xAA274F69, + 0xB327F7A3, 0x6E625D1B, 0x0C40D422, 0xD1057E9A, + 0xABA65FE7, 0x76E3F55F, 0x14C17C66, 0xC984D6DE, + 0xD0846E14, 0x0DC1C4AC, 0x6FE34D95, 0xB2A6E72D, + 0x5DE23C01, 0x80A796B9, 0xE2851F80, 0x3FC0B538, + 0x26C00DF2, 0xFB85A74A, 0x99A72E73, 0x44E284CB, + 0x42C2EEDA, 0x9F874462, 0xFDA5CD5B, 0x20E067E3, + 0x39E0DF29, 0xE4A57591, 0x8687FCA8, 0x5BC25610, + 0xB4868D3C, 0x69C32784, 0x0BE1AEBD, 0xD6A40405, + 0xCFA4BCCF, 0x12E11677, 0x70C39F4E, 0xAD8635F6, + 0x7C834B6C, 0xA1C6E1D4, 0xC3E468ED, 0x1EA1C255, + 0x07A17A9F, 0xDAE4D027, 0xB8C6591E, 0x6583F3A6, + 0x8AC7288A, 0x57828232, 0x35A00B0B, 0xE8E5A1B3, + 0xF1E51979, 0x2CA0B3C1, 0x4E823AF8, 0x93C79040, + 0x95E7FA51, 0x48A250E9, 0x2A80D9D0, 0xF7C57368, + 0xEEC5CBA2, 0x3380611A, 0x51A2E823, 0x8CE7429B, + 0x63A399B7, 0xBEE6330F, 0xDCC4BA36, 0x0181108E, + 0x1881A844, 0xC5C402FC, 0xA7E68BC5, 0x7AA3217D, + 0x52A0C93F, 0x8FE56387, 0xEDC7EABE, 0x30824006, + 0x2982F8CC, 0xF4C75274, 0x96E5DB4D, 0x4BA071F5, + 0xA4E4AAD9, 0x79A10061, 0x1B838958, 0xC6C623E0, + 0xDFC69B2A, 0x02833192, 0x60A1B8AB, 0xBDE41213, + 0xBBC47802, 0x6681D2BA, 0x04A35B83, 0xD9E6F13B, + 0xC0E649F1, 0x1DA3E349, 0x7F816A70, 0xA2C4C0C8, + 0x4D801BE4, 0x90C5B15C, 0xF2E73865, 0x2FA292DD, + 0x36A22A17, 0xEBE780AF, 0x89C50996, 0x5480A32E, + 0x8585DDB4, 0x58C0770C, 0x3AE2FE35, 0xE7A7548D, + 0xFEA7EC47, 0x23E246FF, 0x41C0CFC6, 0x9C85657E, + 0x73C1BE52, 0xAE8414EA, 0xCCA69DD3, 0x11E3376B, + 0x08E38FA1, 0xD5A62519, 0xB784AC20, 0x6AC10698, + 0x6CE16C89, 0xB1A4C631, 0xD3864F08, 0x0EC3E5B0, + 0x17C35D7A, 0xCA86F7C2, 0xA8A47EFB, 0x75E1D443, + 0x9AA50F6F, 0x47E0A5D7, 0x25C22CEE, 0xF8878656, + 0xE1873E9C, 0x3CC29424, 0x5EE01D1D, 0x83A5B7A5, + 0xF90696D8, 0x24433C60, 0x4661B559, 0x9B241FE1, + 0x8224A72B, 0x5F610D93, 0x3D4384AA, 0xE0062E12, + 0x0F42F53E, 0xD2075F86, 0xB025D6BF, 0x6D607C07, + 0x7460C4CD, 0xA9256E75, 0xCB07E74C, 0x16424DF4, + 0x106227E5, 0xCD278D5D, 0xAF050464, 0x7240AEDC, + 0x6B401616, 0xB605BCAE, 0xD4273597, 0x09629F2F, + 0xE6264403, 0x3B63EEBB, 0x59416782, 0x8404CD3A, + 0x9D0475F0, 0x4041DF48, 0x22635671, 0xFF26FCC9, + 0x2E238253, 0xF36628EB, 0x9144A1D2, 0x4C010B6A, + 0x5501B3A0, 0x88441918, 0xEA669021, 0x37233A99, + 0xD867E1B5, 0x05224B0D, 0x6700C234, 0xBA45688C, + 0xA345D046, 0x7E007AFE, 0x1C22F3C7, 0xC167597F, + 0xC747336E, 0x1A0299D6, 0x782010EF, 0xA565BA57, + 0xBC65029D, 0x6120A825, 0x0302211C, 0xDE478BA4, + 0x31035088, 0xEC46FA30, 0x8E647309, 0x5321D9B1, + 0x4A21617B, 0x9764CBC3, 0xF54642FA, 0x2803E842 + }; + static final int[] T8_4 = new int[] { + 0x00000000, 0x38116FAC, 0x7022DF58, 0x4833B0F4, + 0xE045BEB0, 0xD854D11C, 0x906761E8, 0xA8760E44, + 0xC5670B91, 0xFD76643D, 0xB545D4C9, 0x8D54BB65, + 0x2522B521, 0x1D33DA8D, 0x55006A79, 0x6D1105D5, + 0x8F2261D3, 0xB7330E7F, 0xFF00BE8B, 0xC711D127, + 0x6F67DF63, 0x5776B0CF, 0x1F45003B, 0x27546F97, + 0x4A456A42, 0x725405EE, 0x3A67B51A, 0x0276DAB6, + 0xAA00D4F2, 0x9211BB5E, 0xDA220BAA, 0xE2336406, + 0x1BA8B557, 0x23B9DAFB, 0x6B8A6A0F, 0x539B05A3, + 0xFBED0BE7, 0xC3FC644B, 0x8BCFD4BF, 0xB3DEBB13, + 0xDECFBEC6, 0xE6DED16A, 0xAEED619E, 0x96FC0E32, + 0x3E8A0076, 0x069B6FDA, 0x4EA8DF2E, 0x76B9B082, + 0x948AD484, 0xAC9BBB28, 0xE4A80BDC, 0xDCB96470, + 0x74CF6A34, 0x4CDE0598, 0x04EDB56C, 0x3CFCDAC0, + 0x51EDDF15, 0x69FCB0B9, 0x21CF004D, 0x19DE6FE1, + 0xB1A861A5, 0x89B90E09, 0xC18ABEFD, 0xF99BD151, + 0x37516AAE, 0x0F400502, 0x4773B5F6, 0x7F62DA5A, + 0xD714D41E, 0xEF05BBB2, 0xA7360B46, 0x9F2764EA, + 0xF236613F, 0xCA270E93, 0x8214BE67, 0xBA05D1CB, + 0x1273DF8F, 0x2A62B023, 0x625100D7, 0x5A406F7B, + 0xB8730B7D, 0x806264D1, 0xC851D425, 0xF040BB89, + 0x5836B5CD, 0x6027DA61, 0x28146A95, 0x10050539, + 0x7D1400EC, 0x45056F40, 0x0D36DFB4, 0x3527B018, + 0x9D51BE5C, 0xA540D1F0, 0xED736104, 0xD5620EA8, + 0x2CF9DFF9, 0x14E8B055, 0x5CDB00A1, 0x64CA6F0D, + 0xCCBC6149, 0xF4AD0EE5, 0xBC9EBE11, 0x848FD1BD, + 0xE99ED468, 0xD18FBBC4, 0x99BC0B30, 0xA1AD649C, + 0x09DB6AD8, 0x31CA0574, 0x79F9B580, 0x41E8DA2C, + 0xA3DBBE2A, 0x9BCAD186, 0xD3F96172, 0xEBE80EDE, + 0x439E009A, 0x7B8F6F36, 0x33BCDFC2, 0x0BADB06E, + 0x66BCB5BB, 0x5EADDA17, 0x169E6AE3, 0x2E8F054F, + 0x86F90B0B, 0xBEE864A7, 0xF6DBD453, 0xCECABBFF, + 0x6EA2D55C, 0x56B3BAF0, 0x1E800A04, 0x269165A8, + 0x8EE76BEC, 0xB6F60440, 0xFEC5B4B4, 0xC6D4DB18, + 0xABC5DECD, 0x93D4B161, 0xDBE70195, 0xE3F66E39, + 0x4B80607D, 0x73910FD1, 0x3BA2BF25, 0x03B3D089, + 0xE180B48F, 0xD991DB23, 0x91A26BD7, 0xA9B3047B, + 0x01C50A3F, 0x39D46593, 0x71E7D567, 0x49F6BACB, + 0x24E7BF1E, 0x1CF6D0B2, 0x54C56046, 0x6CD40FEA, + 0xC4A201AE, 0xFCB36E02, 0xB480DEF6, 0x8C91B15A, + 0x750A600B, 0x4D1B0FA7, 0x0528BF53, 0x3D39D0FF, + 0x954FDEBB, 0xAD5EB117, 0xE56D01E3, 0xDD7C6E4F, + 0xB06D6B9A, 0x887C0436, 0xC04FB4C2, 0xF85EDB6E, + 0x5028D52A, 0x6839BA86, 0x200A0A72, 0x181B65DE, + 0xFA2801D8, 0xC2396E74, 0x8A0ADE80, 0xB21BB12C, + 0x1A6DBF68, 0x227CD0C4, 0x6A4F6030, 0x525E0F9C, + 0x3F4F0A49, 0x075E65E5, 0x4F6DD511, 0x777CBABD, + 0xDF0AB4F9, 0xE71BDB55, 0xAF286BA1, 0x9739040D, + 0x59F3BFF2, 0x61E2D05E, 0x29D160AA, 0x11C00F06, + 0xB9B60142, 0x81A76EEE, 0xC994DE1A, 0xF185B1B6, + 0x9C94B463, 0xA485DBCF, 0xECB66B3B, 0xD4A70497, + 0x7CD10AD3, 0x44C0657F, 0x0CF3D58B, 0x34E2BA27, + 0xD6D1DE21, 0xEEC0B18D, 0xA6F30179, 0x9EE26ED5, + 0x36946091, 0x0E850F3D, 0x46B6BFC9, 0x7EA7D065, + 0x13B6D5B0, 0x2BA7BA1C, 0x63940AE8, 0x5B856544, + 0xF3F36B00, 0xCBE204AC, 0x83D1B458, 0xBBC0DBF4, + 0x425B0AA5, 0x7A4A6509, 0x3279D5FD, 0x0A68BA51, + 0xA21EB415, 0x9A0FDBB9, 0xD23C6B4D, 0xEA2D04E1, + 0x873C0134, 0xBF2D6E98, 0xF71EDE6C, 0xCF0FB1C0, + 0x6779BF84, 0x5F68D028, 0x175B60DC, 0x2F4A0F70, + 0xCD796B76, 0xF56804DA, 0xBD5BB42E, 0x854ADB82, + 0x2D3CD5C6, 0x152DBA6A, 0x5D1E0A9E, 0x650F6532, + 0x081E60E7, 0x300F0F4B, 0x783CBFBF, 0x402DD013, + 0xE85BDE57, 0xD04AB1FB, 0x9879010F, 0xA0686EA3 + }; + static final int[] T8_5 = new int[] { + 0x00000000, 0xEF306B19, 0xDB8CA0C3, 0x34BCCBDA, + 0xB2F53777, 0x5DC55C6E, 0x697997B4, 0x8649FCAD, + 0x6006181F, 0x8F367306, 0xBB8AB8DC, 0x54BAD3C5, + 0xD2F32F68, 0x3DC34471, 0x097F8FAB, 0xE64FE4B2, + 0xC00C303E, 0x2F3C5B27, 0x1B8090FD, 0xF4B0FBE4, + 0x72F90749, 0x9DC96C50, 0xA975A78A, 0x4645CC93, + 0xA00A2821, 0x4F3A4338, 0x7B8688E2, 0x94B6E3FB, + 0x12FF1F56, 0xFDCF744F, 0xC973BF95, 0x2643D48C, + 0x85F4168D, 0x6AC47D94, 0x5E78B64E, 0xB148DD57, + 0x370121FA, 0xD8314AE3, 0xEC8D8139, 0x03BDEA20, + 0xE5F20E92, 0x0AC2658B, 0x3E7EAE51, 0xD14EC548, + 0x570739E5, 0xB83752FC, 0x8C8B9926, 0x63BBF23F, + 0x45F826B3, 0xAAC84DAA, 0x9E748670, 0x7144ED69, + 0xF70D11C4, 0x183D7ADD, 0x2C81B107, 0xC3B1DA1E, + 0x25FE3EAC, 0xCACE55B5, 0xFE729E6F, 0x1142F576, + 0x970B09DB, 0x783B62C2, 0x4C87A918, 0xA3B7C201, + 0x0E045BEB, 0xE13430F2, 0xD588FB28, 0x3AB89031, + 0xBCF16C9C, 0x53C10785, 0x677DCC5F, 0x884DA746, + 0x6E0243F4, 0x813228ED, 0xB58EE337, 0x5ABE882E, + 0xDCF77483, 0x33C71F9A, 0x077BD440, 0xE84BBF59, + 0xCE086BD5, 0x213800CC, 0x1584CB16, 0xFAB4A00F, + 0x7CFD5CA2, 0x93CD37BB, 0xA771FC61, 0x48419778, + 0xAE0E73CA, 0x413E18D3, 0x7582D309, 0x9AB2B810, + 0x1CFB44BD, 0xF3CB2FA4, 0xC777E47E, 0x28478F67, + 0x8BF04D66, 0x64C0267F, 0x507CEDA5, 0xBF4C86BC, + 0x39057A11, 0xD6351108, 0xE289DAD2, 0x0DB9B1CB, + 0xEBF65579, 0x04C63E60, 0x307AF5BA, 0xDF4A9EA3, + 0x5903620E, 0xB6330917, 0x828FC2CD, 0x6DBFA9D4, + 0x4BFC7D58, 0xA4CC1641, 0x9070DD9B, 0x7F40B682, + 0xF9094A2F, 0x16392136, 0x2285EAEC, 0xCDB581F5, + 0x2BFA6547, 0xC4CA0E5E, 0xF076C584, 0x1F46AE9D, + 0x990F5230, 0x763F3929, 0x4283F2F3, 0xADB399EA, + 0x1C08B7D6, 0xF338DCCF, 0xC7841715, 0x28B47C0C, + 0xAEFD80A1, 0x41CDEBB8, 0x75712062, 0x9A414B7B, + 0x7C0EAFC9, 0x933EC4D0, 0xA7820F0A, 0x48B26413, + 0xCEFB98BE, 0x21CBF3A7, 0x1577387D, 0xFA475364, + 0xDC0487E8, 0x3334ECF1, 0x0788272B, 0xE8B84C32, + 0x6EF1B09F, 0x81C1DB86, 0xB57D105C, 0x5A4D7B45, + 0xBC029FF7, 0x5332F4EE, 0x678E3F34, 0x88BE542D, + 0x0EF7A880, 0xE1C7C399, 0xD57B0843, 0x3A4B635A, + 0x99FCA15B, 0x76CCCA42, 0x42700198, 0xAD406A81, + 0x2B09962C, 0xC439FD35, 0xF08536EF, 0x1FB55DF6, + 0xF9FAB944, 0x16CAD25D, 0x22761987, 0xCD46729E, + 0x4B0F8E33, 0xA43FE52A, 0x90832EF0, 0x7FB345E9, + 0x59F09165, 0xB6C0FA7C, 0x827C31A6, 0x6D4C5ABF, + 0xEB05A612, 0x0435CD0B, 0x308906D1, 0xDFB96DC8, + 0x39F6897A, 0xD6C6E263, 0xE27A29B9, 0x0D4A42A0, + 0x8B03BE0D, 0x6433D514, 0x508F1ECE, 0xBFBF75D7, + 0x120CEC3D, 0xFD3C8724, 0xC9804CFE, 0x26B027E7, + 0xA0F9DB4A, 0x4FC9B053, 0x7B757B89, 0x94451090, + 0x720AF422, 0x9D3A9F3B, 0xA98654E1, 0x46B63FF8, + 0xC0FFC355, 0x2FCFA84C, 0x1B736396, 0xF443088F, + 0xD200DC03, 0x3D30B71A, 0x098C7CC0, 0xE6BC17D9, + 0x60F5EB74, 0x8FC5806D, 0xBB794BB7, 0x544920AE, + 0xB206C41C, 0x5D36AF05, 0x698A64DF, 0x86BA0FC6, + 0x00F3F36B, 0xEFC39872, 0xDB7F53A8, 0x344F38B1, + 0x97F8FAB0, 0x78C891A9, 0x4C745A73, 0xA344316A, + 0x250DCDC7, 0xCA3DA6DE, 0xFE816D04, 0x11B1061D, + 0xF7FEE2AF, 0x18CE89B6, 0x2C72426C, 0xC3422975, + 0x450BD5D8, 0xAA3BBEC1, 0x9E87751B, 0x71B71E02, + 0x57F4CA8E, 0xB8C4A197, 0x8C786A4D, 0x63480154, + 0xE501FDF9, 0x0A3196E0, 0x3E8D5D3A, 0xD1BD3623, + 0x37F2D291, 0xD8C2B988, 0xEC7E7252, 0x034E194B, + 0x8507E5E6, 0x6A378EFF, 0x5E8B4525, 0xB1BB2E3C + }; + static final int[] T8_6 = new int[] { + 0x00000000, 0x68032CC8, 0xD0065990, 0xB8057558, + 0xA5E0C5D1, 0xCDE3E919, 0x75E69C41, 0x1DE5B089, + 0x4E2DFD53, 0x262ED19B, 0x9E2BA4C3, 0xF628880B, + 0xEBCD3882, 0x83CE144A, 0x3BCB6112, 0x53C84DDA, + 0x9C5BFAA6, 0xF458D66E, 0x4C5DA336, 0x245E8FFE, + 0x39BB3F77, 0x51B813BF, 0xE9BD66E7, 0x81BE4A2F, + 0xD27607F5, 0xBA752B3D, 0x02705E65, 0x6A7372AD, + 0x7796C224, 0x1F95EEEC, 0xA7909BB4, 0xCF93B77C, + 0x3D5B83BD, 0x5558AF75, 0xED5DDA2D, 0x855EF6E5, + 0x98BB466C, 0xF0B86AA4, 0x48BD1FFC, 0x20BE3334, + 0x73767EEE, 0x1B755226, 0xA370277E, 0xCB730BB6, + 0xD696BB3F, 0xBE9597F7, 0x0690E2AF, 0x6E93CE67, + 0xA100791B, 0xC90355D3, 0x7106208B, 0x19050C43, + 0x04E0BCCA, 0x6CE39002, 0xD4E6E55A, 0xBCE5C992, + 0xEF2D8448, 0x872EA880, 0x3F2BDDD8, 0x5728F110, + 0x4ACD4199, 0x22CE6D51, 0x9ACB1809, 0xF2C834C1, + 0x7AB7077A, 0x12B42BB2, 0xAAB15EEA, 0xC2B27222, + 0xDF57C2AB, 0xB754EE63, 0x0F519B3B, 0x6752B7F3, + 0x349AFA29, 0x5C99D6E1, 0xE49CA3B9, 0x8C9F8F71, + 0x917A3FF8, 0xF9791330, 0x417C6668, 0x297F4AA0, + 0xE6ECFDDC, 0x8EEFD114, 0x36EAA44C, 0x5EE98884, + 0x430C380D, 0x2B0F14C5, 0x930A619D, 0xFB094D55, + 0xA8C1008F, 0xC0C22C47, 0x78C7591F, 0x10C475D7, + 0x0D21C55E, 0x6522E996, 0xDD279CCE, 0xB524B006, + 0x47EC84C7, 0x2FEFA80F, 0x97EADD57, 0xFFE9F19F, + 0xE20C4116, 0x8A0F6DDE, 0x320A1886, 0x5A09344E, + 0x09C17994, 0x61C2555C, 0xD9C72004, 0xB1C40CCC, + 0xAC21BC45, 0xC422908D, 0x7C27E5D5, 0x1424C91D, + 0xDBB77E61, 0xB3B452A9, 0x0BB127F1, 0x63B20B39, + 0x7E57BBB0, 0x16549778, 0xAE51E220, 0xC652CEE8, + 0x959A8332, 0xFD99AFFA, 0x459CDAA2, 0x2D9FF66A, + 0x307A46E3, 0x58796A2B, 0xE07C1F73, 0x887F33BB, + 0xF56E0EF4, 0x9D6D223C, 0x25685764, 0x4D6B7BAC, + 0x508ECB25, 0x388DE7ED, 0x808892B5, 0xE88BBE7D, + 0xBB43F3A7, 0xD340DF6F, 0x6B45AA37, 0x034686FF, + 0x1EA33676, 0x76A01ABE, 0xCEA56FE6, 0xA6A6432E, + 0x6935F452, 0x0136D89A, 0xB933ADC2, 0xD130810A, + 0xCCD53183, 0xA4D61D4B, 0x1CD36813, 0x74D044DB, + 0x27180901, 0x4F1B25C9, 0xF71E5091, 0x9F1D7C59, + 0x82F8CCD0, 0xEAFBE018, 0x52FE9540, 0x3AFDB988, + 0xC8358D49, 0xA036A181, 0x1833D4D9, 0x7030F811, + 0x6DD54898, 0x05D66450, 0xBDD31108, 0xD5D03DC0, + 0x8618701A, 0xEE1B5CD2, 0x561E298A, 0x3E1D0542, + 0x23F8B5CB, 0x4BFB9903, 0xF3FEEC5B, 0x9BFDC093, + 0x546E77EF, 0x3C6D5B27, 0x84682E7F, 0xEC6B02B7, + 0xF18EB23E, 0x998D9EF6, 0x2188EBAE, 0x498BC766, + 0x1A438ABC, 0x7240A674, 0xCA45D32C, 0xA246FFE4, + 0xBFA34F6D, 0xD7A063A5, 0x6FA516FD, 0x07A63A35, + 0x8FD9098E, 0xE7DA2546, 0x5FDF501E, 0x37DC7CD6, + 0x2A39CC5F, 0x423AE097, 0xFA3F95CF, 0x923CB907, + 0xC1F4F4DD, 0xA9F7D815, 0x11F2AD4D, 0x79F18185, + 0x6414310C, 0x0C171DC4, 0xB412689C, 0xDC114454, + 0x1382F328, 0x7B81DFE0, 0xC384AAB8, 0xAB878670, + 0xB66236F9, 0xDE611A31, 0x66646F69, 0x0E6743A1, + 0x5DAF0E7B, 0x35AC22B3, 0x8DA957EB, 0xE5AA7B23, + 0xF84FCBAA, 0x904CE762, 0x2849923A, 0x404ABEF2, + 0xB2828A33, 0xDA81A6FB, 0x6284D3A3, 0x0A87FF6B, + 0x17624FE2, 0x7F61632A, 0xC7641672, 0xAF673ABA, + 0xFCAF7760, 0x94AC5BA8, 0x2CA92EF0, 0x44AA0238, + 0x594FB2B1, 0x314C9E79, 0x8949EB21, 0xE14AC7E9, + 0x2ED97095, 0x46DA5C5D, 0xFEDF2905, 0x96DC05CD, + 0x8B39B544, 0xE33A998C, 0x5B3FECD4, 0x333CC01C, + 0x60F48DC6, 0x08F7A10E, 0xB0F2D456, 0xD8F1F89E, + 0xC5144817, 0xAD1764DF, 0x15121187, 0x7D113D4F + }; + static final int[] T8_7 = new int[] { + 0x00000000, 0x493C7D27, 0x9278FA4E, 0xDB448769, + 0x211D826D, 0x6821FF4A, 0xB3657823, 0xFA590504, + 0x423B04DA, 0x0B0779FD, 0xD043FE94, 0x997F83B3, + 0x632686B7, 0x2A1AFB90, 0xF15E7CF9, 0xB86201DE, + 0x847609B4, 0xCD4A7493, 0x160EF3FA, 0x5F328EDD, + 0xA56B8BD9, 0xEC57F6FE, 0x37137197, 0x7E2F0CB0, + 0xC64D0D6E, 0x8F717049, 0x5435F720, 0x1D098A07, + 0xE7508F03, 0xAE6CF224, 0x7528754D, 0x3C14086A, + 0x0D006599, 0x443C18BE, 0x9F789FD7, 0xD644E2F0, + 0x2C1DE7F4, 0x65219AD3, 0xBE651DBA, 0xF759609D, + 0x4F3B6143, 0x06071C64, 0xDD439B0D, 0x947FE62A, + 0x6E26E32E, 0x271A9E09, 0xFC5E1960, 0xB5626447, + 0x89766C2D, 0xC04A110A, 0x1B0E9663, 0x5232EB44, + 0xA86BEE40, 0xE1579367, 0x3A13140E, 0x732F6929, + 0xCB4D68F7, 0x827115D0, 0x593592B9, 0x1009EF9E, + 0xEA50EA9A, 0xA36C97BD, 0x782810D4, 0x31146DF3, + 0x1A00CB32, 0x533CB615, 0x8878317C, 0xC1444C5B, + 0x3B1D495F, 0x72213478, 0xA965B311, 0xE059CE36, + 0x583BCFE8, 0x1107B2CF, 0xCA4335A6, 0x837F4881, + 0x79264D85, 0x301A30A2, 0xEB5EB7CB, 0xA262CAEC, + 0x9E76C286, 0xD74ABFA1, 0x0C0E38C8, 0x453245EF, + 0xBF6B40EB, 0xF6573DCC, 0x2D13BAA5, 0x642FC782, + 0xDC4DC65C, 0x9571BB7B, 0x4E353C12, 0x07094135, + 0xFD504431, 0xB46C3916, 0x6F28BE7F, 0x2614C358, + 0x1700AEAB, 0x5E3CD38C, 0x857854E5, 0xCC4429C2, + 0x361D2CC6, 0x7F2151E1, 0xA465D688, 0xED59ABAF, + 0x553BAA71, 0x1C07D756, 0xC743503F, 0x8E7F2D18, + 0x7426281C, 0x3D1A553B, 0xE65ED252, 0xAF62AF75, + 0x9376A71F, 0xDA4ADA38, 0x010E5D51, 0x48322076, + 0xB26B2572, 0xFB575855, 0x2013DF3C, 0x692FA21B, + 0xD14DA3C5, 0x9871DEE2, 0x4335598B, 0x0A0924AC, + 0xF05021A8, 0xB96C5C8F, 0x6228DBE6, 0x2B14A6C1, + 0x34019664, 0x7D3DEB43, 0xA6796C2A, 0xEF45110D, + 0x151C1409, 0x5C20692E, 0x8764EE47, 0xCE589360, + 0x763A92BE, 0x3F06EF99, 0xE44268F0, 0xAD7E15D7, + 0x572710D3, 0x1E1B6DF4, 0xC55FEA9D, 0x8C6397BA, + 0xB0779FD0, 0xF94BE2F7, 0x220F659E, 0x6B3318B9, + 0x916A1DBD, 0xD856609A, 0x0312E7F3, 0x4A2E9AD4, + 0xF24C9B0A, 0xBB70E62D, 0x60346144, 0x29081C63, + 0xD3511967, 0x9A6D6440, 0x4129E329, 0x08159E0E, + 0x3901F3FD, 0x703D8EDA, 0xAB7909B3, 0xE2457494, + 0x181C7190, 0x51200CB7, 0x8A648BDE, 0xC358F6F9, + 0x7B3AF727, 0x32068A00, 0xE9420D69, 0xA07E704E, + 0x5A27754A, 0x131B086D, 0xC85F8F04, 0x8163F223, + 0xBD77FA49, 0xF44B876E, 0x2F0F0007, 0x66337D20, + 0x9C6A7824, 0xD5560503, 0x0E12826A, 0x472EFF4D, + 0xFF4CFE93, 0xB67083B4, 0x6D3404DD, 0x240879FA, + 0xDE517CFE, 0x976D01D9, 0x4C2986B0, 0x0515FB97, + 0x2E015D56, 0x673D2071, 0xBC79A718, 0xF545DA3F, + 0x0F1CDF3B, 0x4620A21C, 0x9D642575, 0xD4585852, + 0x6C3A598C, 0x250624AB, 0xFE42A3C2, 0xB77EDEE5, + 0x4D27DBE1, 0x041BA6C6, 0xDF5F21AF, 0x96635C88, + 0xAA7754E2, 0xE34B29C5, 0x380FAEAC, 0x7133D38B, + 0x8B6AD68F, 0xC256ABA8, 0x19122CC1, 0x502E51E6, + 0xE84C5038, 0xA1702D1F, 0x7A34AA76, 0x3308D751, + 0xC951D255, 0x806DAF72, 0x5B29281B, 0x1215553C, + 0x230138CF, 0x6A3D45E8, 0xB179C281, 0xF845BFA6, + 0x021CBAA2, 0x4B20C785, 0x906440EC, 0xD9583DCB, + 0x613A3C15, 0x28064132, 0xF342C65B, 0xBA7EBB7C, + 0x4027BE78, 0x091BC35F, 0xD25F4436, 0x9B633911, + 0xA777317B, 0xEE4B4C5C, 0x350FCB35, 0x7C33B612, + 0x866AB316, 0xCF56CE31, 0x14124958, 0x5D2E347F, + 0xE54C35A1, 0xAC704886, 0x7734CFEF, 0x3E08B2C8, + 0xC451B7CC, 0x8D6DCAEB, 0x56294D82, 0x1F1530A5 + }; } \ No newline at end of file diff --git a/src/main/java/org/xerial/snappy/Snappy.java b/src/main/java/org/xerial/snappy/Snappy.java index bbfe1b4..054c2e3 100755 --- a/src/main/java/org/xerial/snappy/Snappy.java +++ b/src/main/java/org/xerial/snappy/Snappy.java @@ -33,12 +33,11 @@ import java.util.Properties; /** * Snappy API for data compression/decompression - * + *

* Note: if the native libraries cannot be loaded, an ExceptionInInitializerError * will be thrown at first use of this class. - * + * * @author Taro L. Saito - * */ public class Snappy { @@ -56,7 +55,6 @@ public class Snappy */ private static SnappyNative impl; - /** * Clean up a temporary file (native lib) generated by snappy-java. * General users do not need to call this method, since the native library extracted in snappy-java @@ -64,29 +62,25 @@ public class Snappy * This method is useful when using a J2EE container, which will restart servlet containers multiple times without * restarting JVM. */ - public static void cleanUp() { + public static void cleanUp() + { SnappyLoader.cleanUpExtractedNativeLib(); SnappyLoader.setApi(null); } - /** * Copy bytes from source to destination - * - * @param src - * pointer to the source array - * @param offset - * byte offset in the source array - * @param byteLength - * the number of bytes to copy - * @param dest - * pointer to the destination array - * @param dest_offset - * byte offset in the destination array + * + * @param src pointer to the source array + * @param offset byte offset in the source array + * @param byteLength the number of bytes to copy + * @param dest pointer to the destination array + * @param dest_offset byte offset in the destination array * @throws IOException */ public static void arrayCopy(Object src, int offset, int byteLength, Object dest, int dest_offset) - throws IOException { + throws IOException + { impl.arrayCopy(src, offset, byteLength, dest, dest_offset); } @@ -95,31 +89,32 @@ public class Snappy * array copy to generate the result. If you want to reduce the memory copy * cost, use {@link #compress(byte[], int, int, byte[], int)} or * {@link #compress(ByteBuffer, ByteBuffer)}. - * - * @param input - * the input data + * + * @param input the input data * @return the compressed byte array * @throws IOException */ - public static byte[] compress(byte[] input) throws IOException { + public static byte[] compress(byte[] input) + throws IOException + { return rawCompress(input, input.length); } /** * Compress the input buffer content in [inputOffset, * ...inputOffset+inputLength) then output to the specified output buffer. - * + * * @param input * @param inputOffset * @param inputLength * @param output * @param outputOffset * @return byte size of the compressed data - * @throws IOException - * when failed to access the input/output buffer + * @throws IOException when failed to access the input/output buffer */ public static int compress(byte[] input, int inputOffset, int inputLength, byte[] output, int outputOffset) - throws IOException { + throws IOException + { return rawCompress(input, inputOffset, inputLength, output, outputOffset); } @@ -127,22 +122,22 @@ public class Snappy * Compress the content in the given input buffer. After the compression, * you can retrieve the compressed data from the output buffer [pos() ... * limit()) (compressed data size = limit() - pos() = remaining()) - * - * @param uncompressed - * buffer[pos() ... limit()) containing the input data - * @param compressed - * output of the compressed data. Uses range [pos()..]. + * + * @param uncompressed buffer[pos() ... limit()) containing the input data + * @param compressed output of the compressed data. Uses range [pos()..]. * @return byte size of the compressed data. - * - * @throws SnappyError - * when the input is not a direct buffer + * @throws SnappyError when the input is not a direct buffer */ - public static int compress(ByteBuffer uncompressed, ByteBuffer compressed) throws IOException { + public static int compress(ByteBuffer uncompressed, ByteBuffer compressed) + throws IOException + { - if (!uncompressed.isDirect()) + if (!uncompressed.isDirect()) { throw new SnappyError(SnappyErrorCode.NOT_A_DIRECT_BUFFER, "input is not a direct buffer"); - if (!compressed.isDirect()) + } + if (!compressed.isDirect()) { throw new SnappyError(SnappyErrorCode.NOT_A_DIRECT_BUFFER, "destination is not a direct buffer"); + } // input: uncompressed[pos(), limit()) // output: compressed @@ -160,72 +155,86 @@ public class Snappy /** * Compress the input char array - * + * * @param input * @return the compressed data */ - public static byte[] compress(char[] input) throws IOException { + public static byte[] compress(char[] input) + throws IOException + { return rawCompress(input, input.length * 2); // char uses 2 bytes } /** * Compress the input double array - * + * * @param input * @return the compressed data */ - public static byte[] compress(double[] input) throws IOException { + public static byte[] compress(double[] input) + throws IOException + { return rawCompress(input, input.length * 8); // double uses 8 bytes } /** * Compress the input float array - * + * * @param input * @return the compressed data */ - public static byte[] compress(float[] input) throws IOException { + public static byte[] compress(float[] input) + throws IOException + { return rawCompress(input, input.length * 4); // float uses 4 bytes } /** * Compress the input int array - * + * * @param input * @return the compressed data */ - public static byte[] compress(int[] input) throws IOException { + public static byte[] compress(int[] input) + throws IOException + { return rawCompress(input, input.length * 4); // int uses 4 bytes } /** * Compress the input long array - * + * * @param input * @return the compressed data */ - public static byte[] compress(long[] input) throws IOException { + public static byte[] compress(long[] input) + throws IOException + { return rawCompress(input, input.length * 8); // long uses 8 bytes } /** * Compress the input short array - * + * * @param input * @return the compressed data */ - public static byte[] compress(short[] input) throws IOException { + public static byte[] compress(short[] input) + throws IOException + { return rawCompress(input, input.length * 2); // short uses 2 bytes } /** * Compress the input String - * + * * @param s * @return the compressed data * @throws IOException */ - public static byte[] compress(String s) throws IOException { + public static byte[] compress(String s) + throws IOException + { try { return compress(s, "UTF-8"); } @@ -236,38 +245,43 @@ public class Snappy /** * Compress the input string using the given encoding - * + * * @param s * @param encoding * @return the compressed data * @throws UnsupportedEncodingException * @throws IOException */ - public static byte[] compress(String s, String encoding) throws UnsupportedEncodingException, IOException { + public static byte[] compress(String s, String encoding) + throws UnsupportedEncodingException, IOException + { byte[] data = s.getBytes(encoding); return compress(data); } /** * Compress the input string using the given encoding - * + * * @param s * @param encoding * @return the compressed data * @throws UnsupportedEncodingException * @throws IOException */ - public static byte[] compress(String s, Charset encoding) throws IOException { + public static byte[] compress(String s, Charset encoding) + throws IOException + { byte[] data = s.getBytes(encoding); return compress(data); } /** * Get the native library version of the snappy - * + * * @return native library version */ - public static String getNativeLibraryVersion() { + public static String getNativeLibraryVersion() + { URL versionFile = SnappyLoader.class.getResource("/org/xerial/snappy/VERSION"); @@ -277,8 +291,9 @@ public class Snappy Properties versionData = new Properties(); versionData.load(versionFile.openStream()); version = versionData.getProperty("version", version); - if (version.equals("unknown")) + if (version.equals("unknown")) { version = versionData.getProperty("VERSION", version); + } version = version.trim().replaceAll("[^0-9\\.]", ""); } } @@ -294,9 +309,12 @@ public class Snappy * uncompressed data. Takes time proportional to the input length, but is * usually at least a factor of four faster than actual decompression. */ - public static boolean isValidCompressedBuffer(byte[] input, int offset, int length) throws IOException { - if (input == null) + public static boolean isValidCompressedBuffer(byte[] input, int offset, int length) + throws IOException + { + if (input == null) { throw new NullPointerException("input is null"); + } return impl.isValidCompressedBuffer(input, offset, length); } @@ -306,7 +324,9 @@ public class Snappy * uncompressed data. Takes time proportional to the input length, but is * usually at least a factor of four faster than actual decompression. */ - public static boolean isValidCompressedBuffer(byte[] input) throws IOException { + public static boolean isValidCompressedBuffer(byte[] input) + throws IOException + { return isValidCompressedBuffer(input, 0, input.length); } @@ -316,7 +336,9 @@ public class Snappy * Takes time proportional to the input length, but is usually at least a * factor of four faster than actual decompression. */ - public static boolean isValidCompressedBuffer(ByteBuffer compressed) throws IOException { + public static boolean isValidCompressedBuffer(ByteBuffer compressed) + throws IOException + { return impl.isValidCompressedBuffer(compressed, compressed.position(), compressed.remaining()); } @@ -327,58 +349,64 @@ public class Snappy * uncompressed data. Takes time proportional to the input length, but is * usually at least a factor of four faster than actual decompression. */ - public static boolean isValidCompressedBuffer(long inputAddr, long offset, long length) throws IOException { + public static boolean isValidCompressedBuffer(long inputAddr, long offset, long length) + throws IOException + { return impl.isValidCompressedBuffer(inputAddr, offset, length); } - /** * Get the maximum byte size needed for compressing data of the given byte * size. - * - * @param byteSize - * byte size of the data to compress + * + * @param byteSize byte size of the data to compress * @return maximum byte size of the compressed data */ - public static int maxCompressedLength(int byteSize) { + public static int maxCompressedLength(int byteSize) + { return impl.maxCompressedLength(byteSize); } /** * Zero-copy compress using memory addresses. + * * @param inputAddr input memory address * @param inputSize input byte size * @param destAddr destination address of the compressed data * @return the compressed data size * @throws IOException */ - public static long rawCompress(long inputAddr, long inputSize, long destAddr) throws IOException { + public static long rawCompress(long inputAddr, long inputSize, long destAddr) + throws IOException + { return impl.rawCompress(inputAddr, inputSize, destAddr); } /** * Zero-copy decompress using memory addresses. + * * @param inputAddr input memory address * @param inputSize input byte size * @param destAddr destination address of the uncompressed data * @return the uncompressed data size * @throws IOException */ - public static long rawUncompress(long inputAddr, long inputSize, long destAddr) throws IOException { + public static long rawUncompress(long inputAddr, long inputSize, long destAddr) + throws IOException + { return impl.rawUncompress(inputAddr, inputSize, destAddr); } - /** * Compress the input data and produce a byte array of the uncompressed data - * - * @param data - * input array. The input MUST be an array type - * @param byteSize - * the input byte size + * + * @param data input array. The input MUST be an array type + * @param byteSize the input byte size * @return compressed data */ - public static byte[] rawCompress(Object data, int byteSize) throws IOException { + public static byte[] rawCompress(Object data, int byteSize) + throws IOException + { byte[] buf = new byte[Snappy.maxCompressedLength(byteSize)]; int compressedByteSize = impl.rawCompress(data, 0, byteSize, buf, 0); byte[] result = new byte[compressedByteSize]; @@ -389,24 +417,21 @@ public class Snappy /** * Compress the input buffer [offset,... ,offset+length) contents, then * write the compressed data to the output buffer[offset, ...) - * - * @param input - * input array. This MUST be a primitive array type - * @param inputOffset - * byte offset at the output array - * @param inputLength - * byte length of the input data - * @param output - * output array. This MUST be a primitive array type - * @param outputOffset - * byte offset at the output array + * + * @param input input array. This MUST be a primitive array type + * @param inputOffset byte offset at the output array + * @param inputLength byte length of the input data + * @param output output array. This MUST be a primitive array type + * @param outputOffset byte offset at the output array * @return byte size of the compressed data * @throws IOException */ public static int rawCompress(Object input, int inputOffset, int inputLength, byte[] output, int outputOffset) - throws IOException { - if (input == null || output == null) + throws IOException + { + if (input == null || output == null) { throw new NullPointerException("input or output is null"); + } int compressedSize = impl .rawCompress(input, inputOffset, inputLength, output, outputOffset); @@ -416,42 +441,40 @@ public class Snappy /** * Uncompress the content in the input buffer. The uncompressed data is * written to the output buffer. - * + *

* Note that if you pass the wrong data or the range [inputOffset, * inputOffset + inputLength) that cannot be uncompressed, your JVM might * crash due to the access violation exception issued in the native code * written in C++. To avoid this type of crash, use * {@link #isValidCompressedBuffer(byte[], int, int)} first. - * - * @param input - * input byte array - * @param inputOffset - * byte offset in the input byte array - * @param inputLength - * byte length of the input data - * @param output - * output buffer, MUST be a primitive type array - * @param outputOffset - * byte offset in the output buffer + * + * @param input input byte array + * @param inputOffset byte offset in the input byte array + * @param inputLength byte length of the input data + * @param output output buffer, MUST be a primitive type array + * @param outputOffset byte offset in the output buffer * @return the byte size of the uncompressed data - * @throws IOException - * when failed to uncompress the input data + * @throws IOException when failed to uncompress the input data */ public static int rawUncompress(byte[] input, int inputOffset, int inputLength, Object output, int outputOffset) - throws IOException { - if (input == null || output == null) + throws IOException + { + if (input == null || output == null) { throw new NullPointerException("input or output is null"); + } return impl.rawUncompress(input, inputOffset, inputLength, output, outputOffset); } /** * High-level API for uncompressing the input byte array. - * + * * @param input * @return the uncompressed byte array * @throws IOException */ - public static byte[] uncompress(byte[] input) throws IOException { + public static byte[] uncompress(byte[] input) + throws IOException + { byte[] result = new byte[Snappy.uncompressedLength(input)]; int byteSize = Snappy.uncompress(input, 0, input.length, result, 0); return result; @@ -460,13 +483,13 @@ public class Snappy /** * Uncompress the content in the input buffer. The uncompressed data is * written to the output buffer. - * + *

* Note that if you pass the wrong data or the range [inputOffset, * inputOffset + inputLength) that cannot be uncompressed, your JVM might * crash due to the access violation exception issued in the native code * written in C++. To avoid this type of crash, use * {@link #isValidCompressedBuffer(byte[], int, int)} first. - * + * * @param input * @param inputOffset * @param inputLength @@ -476,37 +499,36 @@ public class Snappy * @throws IOException */ public static int uncompress(byte[] input, int inputOffset, int inputLength, byte[] output, int outputOffset) - throws IOException { + throws IOException + { return rawUncompress(input, inputOffset, inputLength, output, outputOffset); } /** * Uncompress the content in the input buffer. The result is dumped to the * specified output buffer. - * + *

* Note that if you pass the wrong data or the range [pos(), limit()) that * cannot be uncompressed, your JVM might crash due to the access violation * exception issued in the native code written in C++. To avoid this type of * crash, use {@link #isValidCompressedBuffer(ByteBuffer)} first. - * - * - * @param compressed - * buffer[pos() ... limit()) containing the input data - * @param uncompressed - * output of the the uncompressed data. It uses buffer[pos()..] + * + * @param compressed buffer[pos() ... limit()) containing the input data + * @param uncompressed output of the the uncompressed data. It uses buffer[pos()..] * @return uncompressed data size - * - * @throws IOException - * when failed to uncompress the given input - * @throws SnappyError - * when the input is not a direct buffer + * @throws IOException when failed to uncompress the given input + * @throws SnappyError when the input is not a direct buffer */ - public static int uncompress(ByteBuffer compressed, ByteBuffer uncompressed) throws IOException { + public static int uncompress(ByteBuffer compressed, ByteBuffer uncompressed) + throws IOException + { - if (!compressed.isDirect()) + if (!compressed.isDirect()) { throw new SnappyError(SnappyErrorCode.NOT_A_DIRECT_BUFFER, "input is not a direct buffer"); - if (!uncompressed.isDirect()) + } + if (!uncompressed.isDirect()) { throw new SnappyError(SnappyErrorCode.NOT_A_DIRECT_BUFFER, "destination is not a direct buffer"); + } int cPos = compressed.position(); int cLen = compressed.remaining(); @@ -522,25 +544,29 @@ public class Snappy /** * Uncompress the input data as char array - * + * * @param input * @return the uncompressed data * @throws IOException */ - public static char[] uncompressCharArray(byte[] input) throws IOException { + public static char[] uncompressCharArray(byte[] input) + throws IOException + { return uncompressCharArray(input, 0, input.length); } /** * Uncompress the input[offset, .., offset+length) as a char array - * + * * @param input * @param offset * @param length * @return the uncompressed data * @throws IOException */ - public static char[] uncompressCharArray(byte[] input, int offset, int length) throws IOException { + public static char[] uncompressCharArray(byte[] input, int offset, int length) + throws IOException + { int uncompressedLength = Snappy.uncompressedLength(input, offset, length); char[] result = new char[uncompressedLength / 2]; int byteSize = impl.rawUncompress(input, offset, length, result, 0); @@ -549,12 +575,14 @@ public class Snappy /** * Uncompress the input as a double array - * + * * @param input * @return the uncompressed data * @throws IOException */ - public static double[] uncompressDoubleArray(byte[] input) throws IOException { + public static double[] uncompressDoubleArray(byte[] input) + throws IOException + { int uncompressedLength = Snappy.uncompressedLength(input, 0, input.length); double[] result = new double[uncompressedLength / 8]; int byteSize = impl.rawUncompress(input, 0, input.length, result, 0); @@ -564,32 +592,35 @@ public class Snappy /** * Get the uncompressed byte size of the given compressed input. This * operation takes O(1) time. - * + * * @param input * @return uncompressed byte size of the the given input data - * @throws IOException - * when failed to uncompress the given input. The error code is - * {@link SnappyErrorCode#PARSING_ERROR} + * @throws IOException when failed to uncompress the given input. The error code is + * {@link SnappyErrorCode#PARSING_ERROR} */ - public static int uncompressedLength(byte[] input) throws IOException { + public static int uncompressedLength(byte[] input) + throws IOException + { return impl.uncompressedLength(input, 0, input.length); } /** * Get the uncompressed byte size of the given compressed input. This * operation takes O(1) time. - * + * * @param input * @param offset * @param length * @return uncompressed byte size of the the given input data - * @throws IOException - * when failed to uncompress the given input. The error code is - * {@link SnappyErrorCode#PARSING_ERROR} + * @throws IOException when failed to uncompress the given input. The error code is + * {@link SnappyErrorCode#PARSING_ERROR} */ - public static int uncompressedLength(byte[] input, int offset, int length) throws IOException { - if (input == null) + public static int uncompressedLength(byte[] input, int offset, int length) + throws IOException + { + if (input == null) { throw new NullPointerException("input is null"); + } return impl.uncompressedLength(input, offset, length); } @@ -597,56 +628,63 @@ public class Snappy /** * Get the uncompressed byte size of the given compressed input. This * operation takes O(1) time. - * - * @param compressed - * input data [pos() ... limit()) + * + * @param compressed input data [pos() ... limit()) * @return uncompressed byte length of the given input - * @throws IOException - * when failed to uncompress the given input. The error code is - * {@link SnappyErrorCode#PARSING_ERROR} - * @throws SnappyError - * when the input is not a direct buffer + * @throws IOException when failed to uncompress the given input. The error code is + * {@link SnappyErrorCode#PARSING_ERROR} + * @throws SnappyError when the input is not a direct buffer */ - public static int uncompressedLength(ByteBuffer compressed) throws IOException { - if (!compressed.isDirect()) + public static int uncompressedLength(ByteBuffer compressed) + throws IOException + { + if (!compressed.isDirect()) { throw new SnappyError(SnappyErrorCode.NOT_A_DIRECT_BUFFER, "input is not a direct buffer"); + } return impl.uncompressedLength(compressed, compressed.position(), compressed.remaining()); } /** * Get the uncompressed byte size of the given compressed input. This operation takes O(1) time. + * * @param inputAddr compressed data address * @param len byte length of the input * @return uncompressed byte length of the given input * @throws IOException when failed to uncompress the given input. The error code is - * {@link SnappyErrorCode#PARSING_ERROR} + * {@link SnappyErrorCode#PARSING_ERROR} */ - public static long uncompressedLength(long inputAddr, long len) throws IOException { + public static long uncompressedLength(long inputAddr, long len) + throws IOException + { return impl.uncompressedLength(inputAddr, len); } /** * Uncompress the input as a float array - * + * * @param input * @return the uncompressed data * @throws IOException */ - public static float[] uncompressFloatArray(byte[] input) throws IOException { + public static float[] uncompressFloatArray(byte[] input) + throws IOException + { return uncompressFloatArray(input, 0, input.length); } /** * Uncompress the input[offset, offset+length) as a float array - * + * * @param input * @param offset * @param length * @return the uncompressed data * @throws IOException */ - public static float[] uncompressFloatArray(byte[] input, int offset, int length) throws IOException { + public static float[] uncompressFloatArray(byte[] input, int offset, int length) + throws IOException + { int uncompressedLength = Snappy.uncompressedLength(input, offset, length); float[] result = new float[uncompressedLength / 4]; int byteSize = impl.rawUncompress(input, offset, length, result, 0); @@ -655,25 +693,29 @@ public class Snappy /** * Uncompress the input data as an int array - * + * * @param input * @return the uncompressed data * @throws IOException */ - public static int[] uncompressIntArray(byte[] input) throws IOException { + public static int[] uncompressIntArray(byte[] input) + throws IOException + { return uncompressIntArray(input, 0, input.length); } /** * Uncompress the input[offset, offset+length) as an int array - * + * * @param input * @param offset * @param length * @return the uncompressed data * @throws IOException */ - public static int[] uncompressIntArray(byte[] input, int offset, int length) throws IOException { + public static int[] uncompressIntArray(byte[] input, int offset, int length) + throws IOException + { int uncompressedLength = Snappy.uncompressedLength(input, offset, length); int[] result = new int[uncompressedLength / 4]; int byteSize = impl.rawUncompress(input, offset, length, result, 0); @@ -682,25 +724,29 @@ public class Snappy /** * Uncompress the input data as a long array - * + * * @param input * @return the uncompressed data * @throws IOException */ - public static long[] uncompressLongArray(byte[] input) throws IOException { + public static long[] uncompressLongArray(byte[] input) + throws IOException + { return uncompressLongArray(input, 0, input.length); } /** * Uncompress the input[offset, offset+length) as a long array - * + * * @param input * @param offset * @param length * @return the uncompressed data * @throws IOException */ - public static long[] uncompressLongArray(byte[] input, int offset, int length) throws IOException { + public static long[] uncompressLongArray(byte[] input, int offset, int length) + throws IOException + { int uncompressedLength = Snappy.uncompressedLength(input, offset, length); long[] result = new long[uncompressedLength / 8]; int byteSize = impl.rawUncompress(input, offset, length, result, 0); @@ -709,25 +755,29 @@ public class Snappy /** * Uncompress the input as a short array - * + * * @param input * @return the uncompressed data * @throws IOException */ - public static short[] uncompressShortArray(byte[] input) throws IOException { + public static short[] uncompressShortArray(byte[] input) + throws IOException + { return uncompressShortArray(input, 0, input.length); } /** * Uncompress the input[offset, offset+length) as a short array - * + * * @param input * @param offset * @param length * @return the uncompressed data * @throws IOException */ - public static short[] uncompressShortArray(byte[] input, int offset, int length) throws IOException { + public static short[] uncompressShortArray(byte[] input, int offset, int length) + throws IOException + { int uncompressedLength = Snappy.uncompressedLength(input, offset, length); short[] result = new short[uncompressedLength / 2]; int byteSize = impl.rawUncompress(input, offset, length, result, 0); @@ -736,12 +786,14 @@ public class Snappy /** * Uncompress the input as a String - * + * * @param input * @return the uncompressed dasta * @throws IOException */ - public static String uncompressString(byte[] input) throws IOException { + public static String uncompressString(byte[] input) + throws IOException + { try { return uncompressString(input, "UTF-8"); } @@ -752,14 +804,16 @@ public class Snappy /** * Uncompress the input[offset, offset+length) as a String - * + * * @param input * @param offset * @param length * @return the uncompressed data * @throws IOException */ - public static String uncompressString(byte[] input, int offset, int length) throws IOException { + public static String uncompressString(byte[] input, int offset, int length) + throws IOException + { try { return uncompressString(input, offset, length, "UTF-8"); } @@ -771,7 +825,7 @@ public class Snappy /** * Uncompress the input[offset, offset+length) as a String of the given * encoding - * + * * @param input * @param offset * @param length @@ -779,8 +833,10 @@ public class Snappy * @return the uncompressed data * @throws IOException */ - public static String uncompressString(byte[] input, int offset, int length, String encoding) throws IOException, - UnsupportedEncodingException { + public static String uncompressString(byte[] input, int offset, int length, String encoding) + throws IOException, + UnsupportedEncodingException + { byte[] uncompressed = new byte[uncompressedLength(input, offset, length)]; int compressedSize = uncompress(input, offset, length, uncompressed, 0); return new String(uncompressed, encoding); @@ -789,7 +845,7 @@ public class Snappy /** * Uncompress the input[offset, offset+length) as a String of the given * encoding - * + * * @param input * @param offset * @param length @@ -797,8 +853,10 @@ public class Snappy * @return the uncompressed data * @throws IOException */ - public static String uncompressString(byte[] input, int offset, int length, Charset encoding) throws IOException, - UnsupportedEncodingException { + public static String uncompressString(byte[] input, int offset, int length, Charset encoding) + throws IOException, + UnsupportedEncodingException + { byte[] uncompressed = new byte[uncompressedLength(input, offset, length)]; int compressedSize = uncompress(input, offset, length, uncompressed, 0); return new String(uncompressed, encoding); @@ -806,29 +864,33 @@ public class Snappy /** * Uncompress the input as a String of the given encoding - * + * * @param input * @param encoding * @return the uncompressed data * @throws IOException * @throws UnsupportedEncodingException */ - public static String uncompressString(byte[] input, String encoding) throws IOException, - UnsupportedEncodingException { + public static String uncompressString(byte[] input, String encoding) + throws IOException, + UnsupportedEncodingException + { byte[] uncompressed = uncompress(input); return new String(uncompressed, encoding); } /** * Uncompress the input as a String of the given encoding - * + * * @param input * @param encoding * @return the uncompressed data * @throws IOException */ - public static String uncompressString(byte[] input, Charset encoding) throws IOException, - UnsupportedEncodingException { + public static String uncompressString(byte[] input, Charset encoding) + throws IOException, + UnsupportedEncodingException + { byte[] uncompressed = uncompress(input); return new String(uncompressed, encoding); } diff --git a/src/main/java/org/xerial/snappy/SnappyBundleActivator.java b/src/main/java/org/xerial/snappy/SnappyBundleActivator.java index ad08e32..9dd834d 100755 --- a/src/main/java/org/xerial/snappy/SnappyBundleActivator.java +++ b/src/main/java/org/xerial/snappy/SnappyBundleActivator.java @@ -32,36 +32,37 @@ import java.util.jar.Manifest; /** * OSGi bundle entry point - * + * * @author leo - * */ -public class SnappyBundleActivator implements BundleActivator +public class SnappyBundleActivator + implements BundleActivator { - /** - * Name of the Snappy native library - */ - public static final String LIBRARY_NAME = "snappyjava"; - - /** + /** + * Name of the Snappy native library + */ + public static final String LIBRARY_NAME = "snappyjava"; + + /** * Make a call to {@link System#loadLibrary(String)} to load the native library which assumes * that the library is available on the path based on this {@link Bundle}'s {@link Manifest}. */ - public void start(BundleContext context) throws Exception + public void start(BundleContext context) + throws Exception { - String library = System.mapLibraryName(LIBRARY_NAME); - if (library.toLowerCase().endsWith(".dylib")) - { - // some MacOS JDK7+ vendors map to dylib instead of jnilib - library = library.replace(".dylib", ".jnilib"); - } - System.loadLibrary(library); - SnappyLoader.setApi(new SnappyNative()); + String library = System.mapLibraryName(LIBRARY_NAME); + if (library.toLowerCase().endsWith(".dylib")) { + // some MacOS JDK7+ vendors map to dylib instead of jnilib + library = library.replace(".dylib", ".jnilib"); + } + System.loadLibrary(library); + SnappyLoader.setApi(new SnappyNative()); } - public void stop(BundleContext context) throws Exception + public void stop(BundleContext context) + throws Exception { - SnappyLoader.setApi(null); + SnappyLoader.setApi(null); SnappyLoader.cleanUpExtractedNativeLib(); } } diff --git a/src/main/java/org/xerial/snappy/SnappyCodec.java b/src/main/java/org/xerial/snappy/SnappyCodec.java index fc9e0bf..53c93e5 100755 --- a/src/main/java/org/xerial/snappy/SnappyCodec.java +++ b/src/main/java/org/xerial/snappy/SnappyCodec.java @@ -34,41 +34,40 @@ import java.util.Arrays; /** * Preamble header for {@link SnappyOutputStream}. - * + *

*

* The magic header is the following 8 bytes data: - * + *

* 

  * -126, 'S', 'N', 'A', 'P', 'P', 'Y', 0
  *
- * + *

*

- * + * * @author leo - * */ public class SnappyCodec { - public static final byte[] MAGIC_HEADER = new byte[] { -126, 'S', 'N', 'A', 'P', 'P', 'Y', 0 }; - public static final int MAGIC_LEN = MAGIC_HEADER.length; - public static final int HEADER_SIZE = MAGIC_LEN + 8; - public static final int MAGIC_HEADER_HEAD = SnappyOutputStream.readInt(MAGIC_HEADER, 0); - public static final int MAGIC_HEADER_TAIL = SnappyOutputStream.readInt(MAGIC_HEADER, 4); + public static final byte[] MAGIC_HEADER = new byte[] {-126, 'S', 'N', 'A', 'P', 'P', 'Y', 0}; + public static final int MAGIC_LEN = MAGIC_HEADER.length; + public static final int HEADER_SIZE = MAGIC_LEN + 8; + public static final int MAGIC_HEADER_HEAD = SnappyOutputStream.readInt(MAGIC_HEADER, 0); + public static final int MAGIC_HEADER_TAIL = SnappyOutputStream.readInt(MAGIC_HEADER, 4); static { - assert(MAGIC_HEADER_HEAD < 0); + assert (MAGIC_HEADER_HEAD < 0); } + public static final int DEFAULT_VERSION = 1; + public static final int MINIMUM_COMPATIBLE_VERSION = 1; - public static final int DEFAULT_VERSION = 1; - public static final int MINIMUM_COMPATIBLE_VERSION = 1; - - public final byte[] magic; - public final int version; - public final int compatibleVersion; + public final byte[] magic; + public final int version; + public final int compatibleVersion; private final byte[] headerArray; - private SnappyCodec(byte[] magic, int version, int compatibleVersion) { + private SnappyCodec(byte[] magic, int version, int compatibleVersion) + { this.magic = magic; this.version = version; this.compatibleVersion = compatibleVersion; @@ -81,36 +80,44 @@ public class SnappyCodec d.writeInt(compatibleVersion); d.close(); } - catch(IOException e) { + catch (IOException e) { throw new RuntimeException(e); } headerArray = header.toByteArray(); } @Override - public String toString() { + public String toString() + { return String.format("version:%d, compatible version:%d", version, compatibleVersion); } - public static int headerSize() { + public static int headerSize() + { return HEADER_SIZE; } - public int writeHeader(byte[] dst, int dstOffset) { + public int writeHeader(byte[] dst, int dstOffset) + { System.arraycopy(headerArray, 0, dst, dstOffset, headerArray.length); return headerArray.length; } - public int writeHeader(OutputStream out) throws IOException { + public int writeHeader(OutputStream out) + throws IOException + { out.write(headerArray, 0, headerArray.length); return headerArray.length; } - public boolean isValidMagicHeader() { + public boolean isValidMagicHeader() + { return Arrays.equals(MAGIC_HEADER, magic); } - public static SnappyCodec readHeader(InputStream in) throws IOException { + public static SnappyCodec readHeader(InputStream in) + throws IOException + { DataInputStream d = new DataInputStream(in); byte[] magic = new byte[MAGIC_LEN]; d.readFully(magic, 0, MAGIC_LEN); @@ -120,5 +127,4 @@ public class SnappyCodec } public static SnappyCodec currentHeader = new SnappyCodec(MAGIC_HEADER, DEFAULT_VERSION, MINIMUM_COMPATIBLE_VERSION); - } diff --git a/src/main/java/org/xerial/snappy/SnappyError.java b/src/main/java/org/xerial/snappy/SnappyError.java index b366805..42f3a53 100755 --- a/src/main/java/org/xerial/snappy/SnappyError.java +++ b/src/main/java/org/xerial/snappy/SnappyError.java @@ -26,37 +26,40 @@ package org.xerial.snappy; /** * Used when serious errors (unchecked exception) are observed. - * + * * @author leo - * */ -public class SnappyError extends Error +public class SnappyError + extends Error { /** - * + * */ - private static final long serialVersionUID = 1L; + private static final long serialVersionUID = 1L; public final SnappyErrorCode errorCode; - public SnappyError(SnappyErrorCode code) { + public SnappyError(SnappyErrorCode code) + { super(); this.errorCode = code; } - public SnappyError(SnappyErrorCode code, Error e) { + public SnappyError(SnappyErrorCode code, Error e) + { super(e); this.errorCode = code; } - public SnappyError(SnappyErrorCode code, String message) { + public SnappyError(SnappyErrorCode code, String message) + { super(message); this.errorCode = code; } @Override - public String getMessage() { + public String getMessage() + { return String.format("[%s] %s", errorCode.name(), super.getMessage()); } - } diff --git a/src/main/java/org/xerial/snappy/SnappyErrorCode.java b/src/main/java/org/xerial/snappy/SnappyErrorCode.java index 0dd6b4c..4325b02 100755 --- a/src/main/java/org/xerial/snappy/SnappyErrorCode.java +++ b/src/main/java/org/xerial/snappy/SnappyErrorCode.java @@ -26,11 +26,11 @@ package org.xerial.snappy; /** * Error codes of snappy-java - * + * * @author leo - * */ -public enum SnappyErrorCode { +public enum SnappyErrorCode +{ // DO NOT change these error code IDs because these numbers are used inside SnappyNative.cpp UNKNOWN(0), @@ -41,24 +41,27 @@ public enum SnappyErrorCode { FAILED_TO_UNCOMPRESS(5), EMPTY_INPUT(6), INCOMPATIBLE_VERSION(7), - INVALID_CHUNK_SIZE(8) - ; + INVALID_CHUNK_SIZE(8); public final int id; - private SnappyErrorCode(int id) { + private SnappyErrorCode(int id) + { this.id = id; } - public static SnappyErrorCode getErrorCode(int id) { + public static SnappyErrorCode getErrorCode(int id) + { for (SnappyErrorCode code : SnappyErrorCode.values()) { - if (code.id == id) + if (code.id == id) { return code; + } } return UNKNOWN; } - public static String getErrorMessage(int id) { + public static String getErrorMessage(int id) + { return getErrorCode(id).name(); } } diff --git a/src/main/java/org/xerial/snappy/SnappyException.java b/src/main/java/org/xerial/snappy/SnappyException.java index e2b323d..e71d048 100755 --- a/src/main/java/org/xerial/snappy/SnappyException.java +++ b/src/main/java/org/xerial/snappy/SnappyException.java @@ -28,47 +28,55 @@ import java.io.IOException; /** * Exception in snappy-java - * - * @deprecated Snappy-java now uses {@link IOException} + * * @author leo - * + * @deprecated Snappy-java now uses {@link IOException} */ @Deprecated -public class SnappyException extends Exception +public class SnappyException + extends Exception { - private static final long serialVersionUID = 1L; + private static final long serialVersionUID = 1L; public final SnappyErrorCode errorCode; - public SnappyException(int code) { + public SnappyException(int code) + { this(SnappyErrorCode.getErrorCode(code)); } - public SnappyException(SnappyErrorCode errorCode) { + public SnappyException(SnappyErrorCode errorCode) + { super(); this.errorCode = errorCode; } - public SnappyException(SnappyErrorCode errorCode, Exception e) { + public SnappyException(SnappyErrorCode errorCode, Exception e) + { super(e); this.errorCode = errorCode; } - public SnappyException(SnappyErrorCode errorCode, String message) { + public SnappyException(SnappyErrorCode errorCode, String message) + { super(message); this.errorCode = errorCode; } - public SnappyErrorCode getErrorCode() { + public SnappyErrorCode getErrorCode() + { return errorCode; } - public static void throwException(int errorCode) throws SnappyException { + public static void throwException(int errorCode) + throws SnappyException + { throw new SnappyException(errorCode); } @Override - public String getMessage() { + public String getMessage() + { return String.format("[%s] %s", errorCode.name(), super.getMessage()); } } diff --git a/src/main/java/org/xerial/snappy/SnappyFramed.java b/src/main/java/org/xerial/snappy/SnappyFramed.java index 99b04e4..0fef08b 100644 --- a/src/main/java/org/xerial/snappy/SnappyFramed.java +++ b/src/main/java/org/xerial/snappy/SnappyFramed.java @@ -12,19 +12,20 @@ import java.util.logging.Logger; /** * Constants and utilities for implementing x-snappy-framed. - * + * * @author Brett Okken * @since 1.1.0 */ -final class SnappyFramed { +final class SnappyFramed +{ public static final int COMPRESSED_DATA_FLAG = 0x00; public static final int UNCOMPRESSED_DATA_FLAG = 0x01; public static final int STREAM_IDENTIFIER_FLAG = 0xff; - + private static final int MASK_DELTA = 0xa282ead8; - + /** * Sun specific mechanisms to clean up resources associated with direct byte buffers. */ @@ -32,20 +33,20 @@ final class SnappyFramed { private static final Class SUN_DIRECT_BUFFER = (Class) lookupClassQuietly("sun.nio.ch.DirectBuffer"); private static final Method SUN_BUFFER_CLEANER; private static final Method SUN_CLEANER_CLEAN; - - static - { + + static { Method bufferCleaner = null; Method cleanerClean = null; try { //operate under the assumption that if the sun direct buffer class exists, //all of the sun classes exist if (SUN_DIRECT_BUFFER != null) { - bufferCleaner = SUN_DIRECT_BUFFER.getMethod("cleaner", (Class[])null); + bufferCleaner = SUN_DIRECT_BUFFER.getMethod("cleaner", (Class[]) null); Class cleanClazz = lookupClassQuietly("sun.misc.Cleaner"); - cleanerClean = cleanClazz.getMethod("clean", (Class[])null); + cleanerClean = cleanClazz.getMethod("clean", (Class[]) null); } - } catch(Throwable t) { + } + catch (Throwable t) { Logger.getLogger(SnappyFramed.class.getName()).log(Level.FINE, "Exception occurred attempting to lookup Sun specific DirectByteBuffer cleaner classes.", t); } SUN_BUFFER_CLEANER = bufferCleaner; @@ -58,7 +59,7 @@ final class SnappyFramed { */ public static final byte[] HEADER_BYTES = new byte[] { (byte) STREAM_IDENTIFIER_FLAG, 0x06, 0x00, 0x00, 0x73, 0x4e, 0x61, - 0x50, 0x70, 0x59 }; + 0x50, 0x70, 0x59}; public static int maskedCrc32c(byte[] data) { @@ -78,10 +79,10 @@ final class SnappyFramed { * in Apache Hadoop: Rotate the checksum by 15 bits, then add the constant * 0xa282ead8 (using wraparound as normal for unsigned integers). This is * equivalent to the following C code: - * + *

* 

      * uint32_t mask_checksum(uint32_t x) {
-     *     return ((x >> 15) | (x << 17)) + 0xa282ead8; 
+     *     return ((x >> 15) | (x << 17)) + 0xa282ead8;
      * }
      *
*/ @@ -90,9 +91,9 @@ final class SnappyFramed { // Rotate right by 15 bits and add a constant. return ((crc >>> 15) | (crc << 17)) + MASK_DELTA; } - - static final int readBytes(ReadableByteChannel source, ByteBuffer dest) throws IOException + static final int readBytes(ReadableByteChannel source, ByteBuffer dest) + throws IOException { // tells how many bytes to read. final int expectedLength = dest.remaining(); @@ -105,47 +106,43 @@ final class SnappyFramed { totalRead = lastRead; // if we did not read as many bytes as we had hoped, try reading again. - if (lastRead < expectedLength) - { + if (lastRead < expectedLength) { // as long the buffer is not full (remaining() == 0) and we have not reached EOF (lastRead == -1) keep reading. - while (dest.remaining() != 0 && lastRead != -1) - { + while (dest.remaining() != 0 && lastRead != -1) { lastRead = source.read(dest); // if we got EOF, do not add to total read. - if (lastRead != -1) - { + if (lastRead != -1) { totalRead += lastRead; } } } - if (totalRead > 0) - { + if (totalRead > 0) { dest.limit(dest.position()); } - else - { + else { dest.position(dest.limit()); } return totalRead; } - - static int skip(final ReadableByteChannel source, final int skip, final ByteBuffer buffer) throws IOException + + static int skip(final ReadableByteChannel source, final int skip, final ByteBuffer buffer) + throws IOException { if (skip <= 0) { return 0; } - + int toSkip = skip; - int skipped = 0; - while(toSkip > 0 && skipped != -1) { + int skipped = 0; + while (toSkip > 0 && skipped != -1) { buffer.clear(); if (toSkip < buffer.capacity()) { buffer.limit(toSkip); } - + skipped = source.read(buffer); if (skipped > 0) { toSkip -= skipped; @@ -156,18 +153,21 @@ final class SnappyFramed { return skip - toSkip; } - private static Class lookupClassQuietly(String name) { + private static Class lookupClassQuietly(String name) + { try { return SnappyFramed.class.getClassLoader().loadClass(name); - } catch (Throwable t) { + } + catch (Throwable t) { Logger.getLogger(SnappyFramed.class.getName()).log(Level.FINE, "Did not find requested class: " + name, t); } - + return null; } - + /** * Provides jvm implementation specific operation to aggressively release resources associated with buffer. + * * @param buffer The {@code ByteBuffer} to release. Must not be {@code null}. Must be {@link ByteBuffer#isDirect() direct}. */ static void releaseDirectByteBuffer(ByteBuffer buffer) @@ -178,7 +178,8 @@ final class SnappyFramed { try { Object cleaner = SUN_BUFFER_CLEANER.invoke(buffer, (Object[]) null); SUN_CLEANER_CLEAN.invoke(cleaner, (Object[]) null); - } catch (Throwable t) { + } + catch (Throwable t) { Logger.getLogger(SnappyFramed.class.getName()).log(Level.FINE, "Exception occurred attempting to clean up Sun specific DirectByteBuffer.", t); } } diff --git a/src/main/java/org/xerial/snappy/SnappyFramedInputStream.java b/src/main/java/org/xerial/snappy/SnappyFramedInputStream.java index 39e1493..21eb30c 100644 --- a/src/main/java/org/xerial/snappy/SnappyFramedInputStream.java +++ b/src/main/java/org/xerial/snappy/SnappyFramedInputStream.java @@ -28,12 +28,15 @@ import java.util.Arrays; * href="http://snappy.googlecode.com/svn/trunk/framing_format.txt" * >x-snappy-framed as an {@link InputStream} and * {@link ReadableByteChannel}. - * + * * @author Brett Okken * @since 1.1.0 */ -public final class SnappyFramedInputStream extends InputStream implements - ReadableByteChannel { +public final class SnappyFramedInputStream + extends InputStream + implements + ReadableByteChannel +{ private final ReadableByteChannel rbc; private final ByteBuffer frameHeader; @@ -77,51 +80,51 @@ public final class SnappyFramedInputStream extends InputStream implements /** * Creates a Snappy input stream to read data from the specified underlying * input stream. - * - * @param in - * the underlying input stream. Must not be {@code null}. + * + * @param in the underlying input stream. Must not be {@code null}. */ - public SnappyFramedInputStream(InputStream in) throws IOException { + public SnappyFramedInputStream(InputStream in) + throws IOException + { this(in, true); } /** * Creates a Snappy input stream to read data from the specified underlying * input stream. - * - * @param in - * the underlying input stream. Must not be {@code null}. - * @param verifyChecksums - * if true, checksums in input stream will be verified + * + * @param in the underlying input stream. Must not be {@code null}. + * @param verifyChecksums if true, checksums in input stream will be verified */ public SnappyFramedInputStream(InputStream in, boolean verifyChecksums) - throws IOException { + throws IOException + { this(Channels.newChannel(in), verifyChecksums); } /** * Creates a Snappy input stream to read data from the specified underlying * channel. - * - * @param in - * the underlying readable channel. Must not be {@code null}. + * + * @param in the underlying readable channel. Must not be {@code null}. */ public SnappyFramedInputStream(ReadableByteChannel in) - throws IOException { + throws IOException + { this(in, true); } /** * Creates a Snappy input stream to read data from the specified underlying * channel. - * - * @param in - * the underlying readable channel. Must not be {@code null}. - * @param verifyChecksums - * if true, checksums in input stream will be verified + * + * @param in the underlying readable channel. Must not be {@code null}. + * @param verifyChecksums if true, checksums in input stream will be verified */ public SnappyFramedInputStream(ReadableByteChannel in, - boolean verifyChecksums) throws IOException { + boolean verifyChecksums) + throws IOException + { if (in == null) { throw new NullPointerException("in is null"); } @@ -150,16 +153,17 @@ public final class SnappyFramedInputStream extends InputStream implements /** * @param size */ - private void allocateBuffersBasedOnSize(int size) { + private void allocateBuffersBasedOnSize(int size) + { if (input != null) { releaseDirectByteBuffer(input); } - + if (uncompressedDirect != null) { releaseDirectByteBuffer(uncompressedDirect); } - + input = ByteBuffer.allocateDirect(size); final int maxCompressedLength = Snappy.maxCompressedLength(size); uncompressedDirect = ByteBuffer.allocateDirect(maxCompressedLength); @@ -167,7 +171,9 @@ public final class SnappyFramedInputStream extends InputStream implements } @Override - public int read() throws IOException { + public int read() + throws IOException + { if (closed) { return -1; } @@ -178,7 +184,9 @@ public final class SnappyFramedInputStream extends InputStream implements } @Override - public int read(byte[] output, int offset, int length) throws IOException { + public int read(byte[] output, int offset, int length) + throws IOException + { if (output == null) { throw new IllegalArgumentException("output is null"); @@ -207,7 +215,9 @@ public final class SnappyFramedInputStream extends InputStream implements } @Override - public int available() throws IOException { + public int available() + throws IOException + { if (closed) { return 0; } @@ -218,7 +228,8 @@ public final class SnappyFramedInputStream extends InputStream implements * {@inheritDoc} */ @Override - public boolean isOpen() { + public boolean isOpen() + { return !closed; } @@ -226,7 +237,9 @@ public final class SnappyFramedInputStream extends InputStream implements * {@inheritDoc} */ @Override - public int read(ByteBuffer dst) throws IOException { + public int read(ByteBuffer dst) + throws IOException + { if (dst == null) { throw new IllegalArgumentException("dst is null"); @@ -259,14 +272,15 @@ public final class SnappyFramedInputStream extends InputStream implements * Any calls after the source has been exhausted will result in a return * value of {@code 0}. *

- * - * @param os - * The destination to write decompressed content to. + * + * @param os The destination to write decompressed content to. * @return The number of bytes transferred. * @throws IOException * @since 1.1.1 */ - public long transferTo(OutputStream os) throws IOException { + public long transferTo(OutputStream os) + throws IOException + { if (os == null) { throw new IllegalArgumentException("os is null"); } @@ -291,21 +305,22 @@ public final class SnappyFramedInputStream extends InputStream implements * Transfers the entire content of this {@link ReadableByteChannel} to * wbc. This potentially limits the amount of buffering required to * decompress content. - * + *

*

* Unlike {@link #read(ByteBuffer)}, this method does not need to be called * multiple times. A single call will transfer all available content. Any * calls after the source has been exhausted will result in a return value * of {@code 0}. *

- * - * @param wbc - * The destination to write decompressed content to. + * + * @param wbc The destination to write decompressed content to. * @return The number of bytes transferred. * @throws IOException * @since 1.1.1 */ - public long transferTo(WritableByteChannel wbc) throws IOException { + public long transferTo(WritableByteChannel wbc) + throws IOException + { if (wbc == null) { throw new IllegalArgumentException("wbc is null"); } @@ -335,10 +350,13 @@ public final class SnappyFramedInputStream extends InputStream implements } @Override - public void close() throws IOException { + public void close() + throws IOException + { try { rbc.close(); - } finally { + } + finally { if (!closed) { closed = true; } @@ -346,18 +364,20 @@ public final class SnappyFramedInputStream extends InputStream implements if (input != null) { releaseDirectByteBuffer(input); } - + if (uncompressedDirect != null) { releaseDirectByteBuffer(uncompressedDirect); } } } - static enum FrameAction { + static enum FrameAction + { RAW, SKIP, UNCOMPRESS; } - public static final class FrameMetaData { + public static final class FrameMetaData + { final int length; final FrameAction frameAction; @@ -365,14 +385,16 @@ public final class SnappyFramedInputStream extends InputStream implements * @param frameAction * @param length */ - public FrameMetaData(FrameAction frameAction, int length) { + public FrameMetaData(FrameAction frameAction, int length) + { super(); this.frameAction = frameAction; this.length = length; } } - public static final class FrameData { + public static final class FrameData + { final int checkSum; final int offset; @@ -380,14 +402,17 @@ public final class SnappyFramedInputStream extends InputStream implements * @param checkSum * @param offset */ - public FrameData(int checkSum, int offset) { + public FrameData(int checkSum, int offset) + { super(); this.checkSum = checkSum; this.offset = offset; } } - private boolean ensureBuffer() throws IOException { + private boolean ensureBuffer() + throws IOException + { if (available() > 0) { return true; } @@ -435,14 +460,15 @@ public final class SnappyFramedInputStream extends InputStream implements .allocateDirect(uncompressedLength); buffer = new byte[Math.max(input.capacity(), uncompressedLength)]; } - + uncompressedDirect.clear(); this.valid = Snappy.uncompress(input, uncompressedDirect); uncompressedDirect.get(buffer, 0, valid); this.position = 0; - } else { + } + else { // we need to start reading at the offset input.position(frameData.offset); this.position = 0; @@ -461,7 +487,9 @@ public final class SnappyFramedInputStream extends InputStream implements return true; } - private boolean readBlockHeader() throws IOException { + private boolean readBlockHeader() + throws IOException + { frameHeader.clear(); int read = readBytes(rbc, frameHeader); @@ -478,13 +506,13 @@ public final class SnappyFramedInputStream extends InputStream implements } /** - * * @param frameHeader * @return * @throws IOException */ private FrameMetaData getFrameMetaData(ByteBuffer frameHeader) - throws IOException { + throws IOException + { assert frameHeader.hasArray(); @@ -537,16 +565,18 @@ public final class SnappyFramedInputStream extends InputStream implements } /** - * * @param content * @return * @throws IOException */ - private FrameData getFrameData(ByteBuffer content) throws IOException { + private FrameData getFrameData(ByteBuffer content) + throws IOException + { return new FrameData(getCrc32c(content), 4); } - private int getCrc32c(ByteBuffer content) { + private int getCrc32c(ByteBuffer content) + { final int position = content.position(); diff --git a/src/main/java/org/xerial/snappy/SnappyFramedOutputStream.java b/src/main/java/org/xerial/snappy/SnappyFramedOutputStream.java index c36ff4b..7d4d1a7 100644 --- a/src/main/java/org/xerial/snappy/SnappyFramedOutputStream.java +++ b/src/main/java/org/xerial/snappy/SnappyFramedOutputStream.java @@ -24,12 +24,15 @@ import java.nio.channels.WritableByteChannel; * href="http://snappy.googlecode.com/svn/trunk/framing_format.txt" * >x-snappy-framed as an {@link OutputStream} and * {@link WritableByteChannel}. - * + * * @author Brett Okken * @since 1.1.0 */ -public final class SnappyFramedOutputStream extends OutputStream implements - WritableByteChannel { +public final class SnappyFramedOutputStream + extends OutputStream + implements + WritableByteChannel +{ /** * The x-snappy-framed specification allows for a chunk size up to @@ -37,7 +40,7 @@ public final class SnappyFramedOutputStream extends OutputStream implements *

* * We place an additional restriction that the uncompressed data in a chunk - * must be no longer than 65536 bytes. This allows consumers to easily use + * must be no longer than 65536 bytes. This allows consumers to easily use * small fixed-size buffers. * *

@@ -69,67 +72,68 @@ public final class SnappyFramedOutputStream extends OutputStream implements /** * Creates a new {@link SnappyFramedOutputStream} using the {@link #DEFAULT_BLOCK_SIZE} * and {@link #DEFAULT_MIN_COMPRESSION_RATIO}. - * @param out - * The underlying {@link OutputStream} to write to. Must not be - * {@code null}. + * + * @param out The underlying {@link OutputStream} to write to. Must not be + * {@code null}. * @throws IOException */ - public SnappyFramedOutputStream(OutputStream out) throws IOException { + public SnappyFramedOutputStream(OutputStream out) + throws IOException + { this(out, DEFAULT_BLOCK_SIZE, DEFAULT_MIN_COMPRESSION_RATIO); } /** * Creates a new {@link SnappyFramedOutputStream} instance. - * - * @param out - * The underlying {@link OutputStream} to write to. Must not be - * {@code null}. - * @param blockSize - * The block size (of raw data) to compress before writing frames - * to out. Must be in (0, 65536]. - * @param minCompressionRatio - * Defines the minimum compression ratio ( - * {@code compressedLength / rawLength}) that must be achieved to - * write the compressed data. This must be in (0, 1.0]. + * + * @param out The underlying {@link OutputStream} to write to. Must not be + * {@code null}. + * @param blockSize The block size (of raw data) to compress before writing frames + * to out. Must be in (0, 65536]. + * @param minCompressionRatio Defines the minimum compression ratio ( + * {@code compressedLength / rawLength}) that must be achieved to + * write the compressed data. This must be in (0, 1.0]. * @throws IOException */ public SnappyFramedOutputStream(OutputStream out, int blockSize, - double minCompressionRatio) throws IOException { + double minCompressionRatio) + throws IOException + { this(Channels.newChannel(out), blockSize, minCompressionRatio); } /** * Creates a new {@link SnappyFramedOutputStream} using the * {@link #DEFAULT_BLOCK_SIZE} and {@link #DEFAULT_MIN_COMPRESSION_RATIO}. - * - * @param out - * The underlying {@link WritableByteChannel} to write to. Must - * not be {@code null}. - * @since 1.1.1 + * + * @param out The underlying {@link WritableByteChannel} to write to. Must + * not be {@code null}. * @throws IOException + * @since 1.1.1 */ - public SnappyFramedOutputStream(WritableByteChannel out) throws IOException { + public SnappyFramedOutputStream(WritableByteChannel out) + throws IOException + { this(out, DEFAULT_BLOCK_SIZE, DEFAULT_MIN_COMPRESSION_RATIO); } /** * Creates a new {@link SnappyFramedOutputStream} instance. - * - * @param out - * The underlying {@link WritableByteChannel} to write to. Must - * not be {@code null}. - * @param blockSize - * The block size (of raw data) to compress before writing frames - * to out. Must be in (0, 65536]. - * @param minCompressionRatio - * Defines the minimum compression ratio ( - * {@code compressedLength / rawLength}) that must be achieved to - * write the compressed data. This must be in (0, 1.0]. - * @since 1.1.1 + * + * @param out The underlying {@link WritableByteChannel} to write to. Must + * not be {@code null}. + * @param blockSize The block size (of raw data) to compress before writing frames + * to out. Must be in (0, 65536]. + * @param minCompressionRatio Defines the minimum compression ratio ( + * {@code compressedLength / rawLength}) that must be achieved to + * write the compressed data. This must be in (0, 1.0]. * @throws IOException + * @since 1.1.1 */ public SnappyFramedOutputStream(WritableByteChannel out, int blockSize, - double minCompressionRatio) throws IOException { + double minCompressionRatio) + throws IOException + { if (out == null) { throw new NullPointerException(); } @@ -157,12 +161,13 @@ public final class SnappyFramedOutputStream extends OutputStream implements /** * Writes the implementation specific header or "marker bytes" to * out. - * - * @param out - * The underlying {@link OutputStream}. + * + * @param out The underlying {@link OutputStream}. * @throws IOException */ - private void writeHeader(WritableByteChannel out) throws IOException { + private void writeHeader(WritableByteChannel out) + throws IOException + { out.write(ByteBuffer.wrap(HEADER_BYTES)); } @@ -170,12 +175,15 @@ public final class SnappyFramedOutputStream extends OutputStream implements * {@inheritDoc} */ @Override - public boolean isOpen() { + public boolean isOpen() + { return !closed; } @Override - public void write(int b) throws IOException { + public void write(int b) + throws IOException + { if (closed) { throw new IOException("Stream is closed"); } @@ -186,14 +194,17 @@ public final class SnappyFramedOutputStream extends OutputStream implements } @Override - public void write(byte[] input, int offset, int length) throws IOException { + public void write(byte[] input, int offset, int length) + throws IOException + { if (closed) { throw new IOException("Stream is closed"); } if (input == null) { throw new NullPointerException(); - } else if ((offset < 0) || (offset > input.length) || (length < 0) + } + else if ((offset < 0) || (offset > input.length) || (length < 0) || ((offset + length) > input.length) || ((offset + length) < 0)) { throw new IndexOutOfBoundsException(); @@ -215,7 +226,9 @@ public final class SnappyFramedOutputStream extends OutputStream implements * {@inheritDoc} */ @Override - public int write(ByteBuffer src) throws IOException { + public int write(ByteBuffer src) + throws IOException + { if (closed) { throw new ClosedChannelException(); } @@ -255,14 +268,15 @@ public final class SnappyFramedOutputStream extends OutputStream implements * Transfers all the content from is to this {@link OutputStream}. * This potentially limits the amount of buffering required to compress * content. - * - * @param is - * The source of data to compress. + * + * @param is The source of data to compress. * @return The number of bytes read from is. * @throws IOException * @since 1.1.1 */ - public long transferFrom(InputStream is) throws IOException { + public long transferFrom(InputStream is) + throws IOException + { if (closed) { throw new ClosedChannelException(); } @@ -299,14 +313,15 @@ public final class SnappyFramedOutputStream extends OutputStream implements * Transfers all the content from rbc to this * {@link WritableByteChannel}. This potentially limits the amount of * buffering required to compress content. - * - * @param rbc - * The source of data to compress. + * + * @param rbc The source of data to compress. * @return The number of bytes read from rbc. * @throws IOException * @since 1.1.1 */ - public long transferFrom(ReadableByteChannel rbc) throws IOException { + public long transferFrom(ReadableByteChannel rbc) + throws IOException + { if (closed) { throw new ClosedChannelException(); } @@ -333,7 +348,9 @@ public final class SnappyFramedOutputStream extends OutputStream implements } @Override - public final void flush() throws IOException { + public final void flush() + throws IOException + { if (closed) { throw new IOException("Stream is closed"); } @@ -341,16 +358,19 @@ public final class SnappyFramedOutputStream extends OutputStream implements } @Override - public final void close() throws IOException { + public final void close() + throws IOException + { if (closed) { return; } try { flush(); out.close(); - } finally { + } + finally { closed = true; - + releaseDirectByteBuffer(directInputBuffer); releaseDirectByteBuffer(outputBuffer); } @@ -359,10 +379,12 @@ public final class SnappyFramedOutputStream extends OutputStream implements /** * Compresses and writes out any buffered data. This does nothing if there * is no currently buffered data. - * + * * @throws IOException */ - private void flushBuffer() throws IOException { + private void flushBuffer() + throws IOException + { if (buffer.position() > 0) { buffer.flip(); writeCompressed(buffer); @@ -375,12 +397,13 @@ public final class SnappyFramedOutputStream extends OutputStream implements * the data, determines if the compression ratio is acceptable and calls * {@link #writeBlock(java.nio.channels.WritableByteChannel, java.nio.ByteBuffer, boolean, int)} to * actually write the frame. - * + * * @param buffer - * @throws IOException */ - private void writeCompressed(ByteBuffer buffer) throws IOException { + private void writeCompressed(ByteBuffer buffer) + throws IOException + { final byte[] input = buffer.array(); final int length = buffer.remaining(); @@ -401,7 +424,8 @@ public final class SnappyFramedOutputStream extends OutputStream implements // minCompressonRatio if (((double) compressedLength / (double) length) <= minCompressionRatio) { writeBlock(out, outputBuffer, true, crc32c); - } else { + } + else { // otherwise use the uncompressed data. buffer.flip(); writeBlock(out, buffer, false, crc32c); @@ -410,21 +434,19 @@ public final class SnappyFramedOutputStream extends OutputStream implements /** * Write a frame (block) to out. - * - * @param out - * The {@link OutputStream} to write to. - * @param data - * The data to write. - * @param compressed - * Indicates if data is the compressed or raw content. - * This is based on whether the compression ratio desired is - * reached. - * @param crc32c - * The calculated checksum. + * + * @param out The {@link OutputStream} to write to. + * @param data The data to write. + * @param compressed Indicates if data is the compressed or raw content. + * This is based on whether the compression ratio desired is + * reached. + * @param crc32c The calculated checksum. * @throws IOException */ private void writeBlock(final WritableByteChannel out, ByteBuffer data, - boolean compressed, int crc32c) throws IOException { + boolean compressed, int crc32c) + throws IOException + { headerBuffer.clear(); headerBuffer.put((byte) (compressed ? COMPRESSED_DATA_FLAG diff --git a/src/main/java/org/xerial/snappy/SnappyIOException.java b/src/main/java/org/xerial/snappy/SnappyIOException.java index ee4c60c..9b6a5a8 100644 --- a/src/main/java/org/xerial/snappy/SnappyIOException.java +++ b/src/main/java/org/xerial/snappy/SnappyIOException.java @@ -5,19 +5,22 @@ import java.io.IOException; /** * Enhanced IOException with SnappyErrorCode */ -public class SnappyIOException extends IOException { +public class SnappyIOException + extends IOException +{ private final SnappyErrorCode errorCode; - public SnappyIOException(SnappyErrorCode errorCode, String message) { + public SnappyIOException(SnappyErrorCode errorCode, String message) + { super(message); this.errorCode = errorCode; } @Override - public String getMessage() { + public String getMessage() + { return String.format("[%s] %s", errorCode.name(), super.getMessage()); } public SnappyErrorCode getErrorCode() { return errorCode; } - } diff --git a/src/main/java/org/xerial/snappy/SnappyInputStream.java b/src/main/java/org/xerial/snappy/SnappyInputStream.java index 3e0a3ba..ad68ad9 100755 --- a/src/main/java/org/xerial/snappy/SnappyInputStream.java +++ b/src/main/java/org/xerial/snappy/SnappyInputStream.java @@ -30,30 +30,31 @@ import java.io.InputStream; /** * A stream filter for reading data compressed by {@link SnappyOutputStream}. - * - * + * * @author leo - * */ -public class SnappyInputStream extends InputStream +public class SnappyInputStream + extends InputStream { - private boolean finishedReading = false; + private boolean finishedReading = false; protected final InputStream in; - private byte[] compressed; - private byte[] uncompressed; - private int uncompressedCursor = 0; - private int uncompressedLimit = 0; + private byte[] compressed; + private byte[] uncompressed; + private int uncompressedCursor = 0; + private int uncompressedLimit = 0; - private byte[] header = new byte[SnappyCodec.headerSize()]; + private byte[] header = new byte[SnappyCodec.headerSize()]; /** * Create a filter for reading compressed data as a uncompressed stream - * + * * @param input * @throws IOException */ - public SnappyInputStream(InputStream input) throws IOException { + public SnappyInputStream(InputStream input) + throws IOException + { this.in = input; readHeader(); } @@ -65,24 +66,30 @@ public class SnappyInputStream extends InputStream * @see java.io.InputStream#close() */ @Override - public void close() throws IOException { + public void close() + throws IOException + { compressed = null; uncompressed = null; - if (in != null) + if (in != null) { in.close(); + } } - protected void readHeader() throws IOException { + protected void readHeader() + throws IOException + { int readBytes = 0; while (readBytes < header.length) { int ret = in.read(header, readBytes, header.length - readBytes); - if (ret == -1) + if (ret == -1) { break; + } readBytes += ret; } // Quick test of the header - if(readBytes == 0) { + if (readBytes == 0) { // Snappy produces at least 1-byte result. So the empty input is not a valid input throw new SnappyIOException(SnappyErrorCode.EMPTY_INPUT, "Cannot decompress empty stream"); } @@ -92,30 +99,35 @@ public class SnappyInputStream extends InputStream return; } - if(!isValidHeader(header)) { + if (!isValidHeader(header)) { // (probably) compressed by Snappy.compress(byte[]) readFully(header, readBytes); return; } } - private static boolean isValidHeader(byte[] header) throws IOException { + private static boolean isValidHeader(byte[] header) + throws IOException + { SnappyCodec codec = SnappyCodec.readHeader(new ByteArrayInputStream(header)); if (codec.isValidMagicHeader()) { // The input data is compressed by SnappyOutputStream - if(codec.version < SnappyCodec.MINIMUM_COMPATIBLE_VERSION) { + if (codec.version < SnappyCodec.MINIMUM_COMPATIBLE_VERSION) { throw new SnappyIOException(SnappyErrorCode.INCOMPATIBLE_VERSION, String.format( - "Compressed with an incompatible codec version %d. At least version %d is required", - codec.version, SnappyCodec.MINIMUM_COMPATIBLE_VERSION)); + "Compressed with an incompatible codec version %d. At least version %d is required", + codec.version, SnappyCodec.MINIMUM_COMPATIBLE_VERSION)); } return true; } - else + else { return false; + } } - protected void readFully(byte[] fragment, int fragmentLength) throws IOException { - if(fragmentLength == 0) { + protected void readFully(byte[] fragment, int fragmentLength) + throws IOException + { + if (fragmentLength == 0) { finishedReading = true; return; } @@ -123,7 +135,7 @@ public class SnappyInputStream extends InputStream compressed = new byte[Math.max(8 * 1024, fragmentLength)]; // 8K System.arraycopy(fragment, 0, compressed, 0, fragmentLength); int cursor = fragmentLength; - for (int readBytes = 0; (readBytes = in.read(compressed, cursor, compressed.length - cursor)) != -1;) { + for (int readBytes = 0; (readBytes = in.read(compressed, cursor, compressed.length - cursor)) != -1; ) { cursor += readBytes; if (cursor >= compressed.length) { byte[] newBuf = new byte[(compressed.length * 2)]; @@ -140,7 +152,6 @@ public class SnappyInputStream extends InputStream Snappy.uncompress(compressed, 0, cursor, uncompressed, 0); this.uncompressedCursor = 0; this.uncompressedLimit = uncompressedLength; - } /** @@ -151,26 +162,31 @@ public class SnappyInputStream extends InputStream * @see java.io.InputStream#read(byte[], int, int) */ @Override - public int read(byte[] b, int off, int len) throws IOException { + public int read(byte[] b, int off, int len) + throws IOException + { return rawRead(b, off, len); } /** * Read uncompressed data into the specified array - * + * * @param array * @param byteOffset * @param byteLength * @return written bytes * @throws IOException */ - public int rawRead(Object array, int byteOffset, int byteLength) throws IOException { + public int rawRead(Object array, int byteOffset, int byteLength) + throws IOException + { int writtenBytes = 0; - for (; writtenBytes < byteLength;) { + for (; writtenBytes < byteLength; ) { if (uncompressedCursor >= uncompressedLimit) { - if (hasNextChunk()) + if (hasNextChunk()) { continue; + } else { return writtenBytes == 0 ? -1 : writtenBytes; } @@ -186,157 +202,165 @@ public class SnappyInputStream extends InputStream /** * Read long array from the stream - * - * @param d - * input - * @param off - * offset - * @param len - * the number of long elements to read + * + * @param d input + * @param off offset + * @param len the number of long elements to read * @return the total number of bytes read into the buffer, or -1 if there is - * no more data because the end of the stream has been reached. + * no more data because the end of the stream has been reached. * @throws IOException */ - public int read(long[] d, int off, int len) throws IOException { + public int read(long[] d, int off, int len) + throws IOException + { return rawRead(d, off * 8, len * 8); } /** * Read long array from the stream - * + * * @param d * @return the total number of bytes read into the buffer, or -1 if there is - * no more data because the end of the stream has been reached. + * no more data because the end of the stream has been reached. * @throws IOException */ - public int read(long[] d) throws IOException { + public int read(long[] d) + throws IOException + { return read(d, 0, d.length); } /** * Read double array from the stream - * - * @param d - * input - * @param off - * offset - * @param len - * the number of double elements to read + * + * @param d input + * @param off offset + * @param len the number of double elements to read * @return the total number of bytes read into the buffer, or -1 if there is - * no more data because the end of the stream has been reached. + * no more data because the end of the stream has been reached. * @throws IOException */ - public int read(double[] d, int off, int len) throws IOException { + public int read(double[] d, int off, int len) + throws IOException + { return rawRead(d, off * 8, len * 8); } /** * Read double array from the stream - * + * * @param d * @return the total number of bytes read into the buffer, or -1 if there is - * no more data because the end of the stream has been reached. + * no more data because the end of the stream has been reached. * @throws IOException */ - public int read(double[] d) throws IOException { + public int read(double[] d) + throws IOException + { return read(d, 0, d.length); } /** * Read int array from the stream - * + * * @param d * @return the total number of bytes read into the buffer, or -1 if there is - * no more data because the end of the stream has been reached. + * no more data because the end of the stream has been reached. * @throws IOException */ - public int read(int[] d) throws IOException { + public int read(int[] d) + throws IOException + { return read(d, 0, d.length); } /** * Read int array from the stream - * - * @param d - * input - * @param off - * offset - * @param len - * the number of int elements to read + * + * @param d input + * @param off offset + * @param len the number of int elements to read * @return the total number of bytes read into the buffer, or -1 if there is - * no more data because the end of the stream has been reached. + * no more data because the end of the stream has been reached. * @throws IOException */ - public int read(int[] d, int off, int len) throws IOException { + public int read(int[] d, int off, int len) + throws IOException + { return rawRead(d, off * 4, len * 4); } /** * Read float array from the stream - * - * @param d - * input - * @param off - * offset - * @param len - * the number of float elements to read + * + * @param d input + * @param off offset + * @param len the number of float elements to read * @return the total number of bytes read into the buffer, or -1 if there is - * no more data because the end of the stream has been reached. + * no more data because the end of the stream has been reached. * @throws IOException */ - public int read(float[] d, int off, int len) throws IOException { + public int read(float[] d, int off, int len) + throws IOException + { return rawRead(d, off * 4, len * 4); } /** * Read float array from the stream - * + * * @param d * @return the total number of bytes read into the buffer, or -1 if there is - * no more data because the end of the stream has been reached. + * no more data because the end of the stream has been reached. * @throws IOException */ - public int read(float[] d) throws IOException { + public int read(float[] d) + throws IOException + { return read(d, 0, d.length); } /** * Read short array from the stream - * - * @param d - * input - * @param off - * offset - * @param len - * the number of short elements to read + * + * @param d input + * @param off offset + * @param len the number of short elements to read * @return the total number of bytes read into the buffer, or -1 if there is - * no more data because the end of the stream has been reached. + * no more data because the end of the stream has been reached. * @throws IOException */ - public int read(short[] d, int off, int len) throws IOException { + public int read(short[] d, int off, int len) + throws IOException + { return rawRead(d, off * 2, len * 2); } /** * Read short array from the stream - * + * * @param d * @return the total number of bytes read into the buffer, or -1 if there is - * no more data because the end of the stream has been reached. + * no more data because the end of the stream has been reached. * @throws IOException */ - public int read(short[] d) throws IOException { + public int read(short[] d) + throws IOException + { return read(d, 0, d.length); } /** * Read next len bytes + * * @param dest * @param offset * @param len * @return read bytes */ - private int readNext(byte[] dest, int offset, int len) throws IOException { + private int readNext(byte[] dest, int offset, int len) + throws IOException + { int readBytes = 0; while (readBytes < len) { int ret = in.read(dest, readBytes + offset, len - readBytes); @@ -349,29 +373,36 @@ public class SnappyInputStream extends InputStream return readBytes; } - protected boolean hasNextChunk() throws IOException { - if (finishedReading) + protected boolean hasNextChunk() + throws IOException + { + if (finishedReading) { return false; + } uncompressedCursor = 0; uncompressedLimit = 0; int readBytes = readNext(header, 0, 4); - if(readBytes < 4) + if (readBytes < 4) { return false; + } int chunkSize = SnappyOutputStream.readInt(header, 0); - if(chunkSize == SnappyCodec.MAGIC_HEADER_HEAD) { + if (chunkSize == SnappyCodec.MAGIC_HEADER_HEAD) { // Concatenated data int remainingHeaderSize = SnappyCodec.headerSize() - 4; readBytes = readNext(header, 4, remainingHeaderSize); - if(readBytes < remainingHeaderSize) + if (readBytes < remainingHeaderSize) { return false; + } - if(isValidHeader(header)) + if (isValidHeader(header)) { return hasNextChunk(); - else + } + else { return false; + } } // extend the compressed data buffer size @@ -381,8 +412,9 @@ public class SnappyInputStream extends InputStream readBytes = 0; while (readBytes < chunkSize) { int ret = in.read(compressed, readBytes, chunkSize - readBytes); - if (ret == -1) + if (ret == -1) { break; + } readBytes += ret; } if (readBytes < chunkSize) { @@ -412,15 +444,19 @@ public class SnappyInputStream extends InputStream * @see java.io.InputStream#read() */ @Override - public int read() throws IOException { + public int read() + throws IOException + { if (uncompressedCursor < uncompressedLimit) { return uncompressed[uncompressedCursor++] & 0xFF; } else { - if (hasNextChunk()) + if (hasNextChunk()) { return read(); - else + } + else { return -1; + } } } @@ -428,7 +464,9 @@ public class SnappyInputStream extends InputStream * @see java.io.InputStream#available() */ @Override - public int available() throws IOException { + public int available() + throws IOException + { if (uncompressedCursor < uncompressedLimit) { return uncompressedLimit - uncompressedCursor; } diff --git a/src/main/java/org/xerial/snappy/SnappyLoader.java b/src/main/java/org/xerial/snappy/SnappyLoader.java index a497010..2cff1a6 100755 --- a/src/main/java/org/xerial/snappy/SnappyLoader.java +++ b/src/main/java/org/xerial/snappy/SnappyLoader.java @@ -36,10 +36,10 @@ import java.util.UUID; * user platform (os.name and os.arch). The natively compiled * libraries bundled to snappy-java contain the codes of the original snappy and * JNI programs to access Snappy. - * + *

* In default, no configuration is required to use snappy-java, but you can load * your own native library created by 'make native' command. - * + *

* This SnappyLoader searches for native libraries (snappyjava.dll, * libsnappy.so, etc.) in the following order: *

    @@ -53,70 +53,73 @@ import java.util.UUID; * org.xerial.snappy.tempdir is set, use this folder instead of * java.io.tempdir. *
- * + *

*

* If you do not want to use folder java.io.tempdir, set the System * property org.xerial.snappy.tempdir. For example, to use * /tmp/leo as a temporary folder to copy native libraries, use -D option * of JVM: - * + *

* 

  * 
  * java -Dorg.xerial.snappy.tempdir="/tmp/leo" ...
  * 
  *
- * + *

*

- * + * * @author leo - * */ public class SnappyLoader { - public static final String SNAPPY_SYSTEM_PROPERTIES_FILE = "org-xerial-snappy.properties"; - public static final String KEY_SNAPPY_LIB_PATH = "org.xerial.snappy.lib.path"; - public static final String KEY_SNAPPY_LIB_NAME = "org.xerial.snappy.lib.name"; - public static final String KEY_SNAPPY_TEMPDIR = "org.xerial.snappy.tempdir"; - public static final String KEY_SNAPPY_USE_SYSTEMLIB = "org.xerial.snappy.use.systemlib"; + public static final String SNAPPY_SYSTEM_PROPERTIES_FILE = "org-xerial-snappy.properties"; + public static final String KEY_SNAPPY_LIB_PATH = "org.xerial.snappy.lib.path"; + public static final String KEY_SNAPPY_LIB_NAME = "org.xerial.snappy.lib.name"; + public static final String KEY_SNAPPY_TEMPDIR = "org.xerial.snappy.tempdir"; + public static final String KEY_SNAPPY_USE_SYSTEMLIB = "org.xerial.snappy.use.systemlib"; public static final String KEY_SNAPPY_DISABLE_BUNDLED_LIBS = "org.xerial.snappy.disable.bundled.libs"; // Depreciated, but preserved for backward compatibility - private static volatile boolean isLoaded = false; - private static volatile SnappyNative api = null; + private static volatile boolean isLoaded = false; + private static volatile SnappyNative api = null; private static File nativeLibFile = null; - static void cleanUpExtractedNativeLib() { - if(nativeLibFile != null && nativeLibFile.exists()) + static void cleanUpExtractedNativeLib() + { + if (nativeLibFile != null && nativeLibFile.exists()) { nativeLibFile.delete(); + } } /** * Set the api instance. - * + * * @param nativeCode */ static synchronized void setApi(SnappyNative nativeCode) { - api = nativeCode; + api = nativeCode; } - + /** * load system properties when configuration file of the name * {@link #SNAPPY_SYSTEM_PROPERTIES_FILE} is found */ - private static void loadSnappySystemProperties() { + private static void loadSnappySystemProperties() + { try { InputStream is = Thread.currentThread().getContextClassLoader() .getResourceAsStream(SNAPPY_SYSTEM_PROPERTIES_FILE); - if (is == null) - return; // no configuration file is found + if (is == null) { + return; // no configuration file is found + } // Load property file Properties props = new Properties(); props.load(is); is.close(); - Enumeration< ? > names = props.propertyNames(); + Enumeration names = props.propertyNames(); while (names.hasMoreElements()) { String name = (String) names.nextElement(); if (name.startsWith("org.xerial.snappy.")) { @@ -138,8 +141,9 @@ public class SnappyLoader static synchronized SnappyNative load() { - if (api != null) + if (api != null) { return api; + } try { loadNativeLibrary(); @@ -158,7 +162,8 @@ public class SnappyLoader /** * Load a native library of snappy-java */ - private static void loadNativeLibrary() { + private static void loadNativeLibrary() + { nativeLibFile = findNativeLibrary(); if (nativeLibFile != null) { @@ -171,34 +176,38 @@ public class SnappyLoader } } - - private static boolean contentsEquals(InputStream in1, InputStream in2) throws IOException { - if(!(in1 instanceof BufferedInputStream)) { - in1 = new BufferedInputStream(in1); + private static boolean contentsEquals(InputStream in1, InputStream in2) + throws IOException + { + if (!(in1 instanceof BufferedInputStream)) { + in1 = new BufferedInputStream(in1); } - if(!(in2 instanceof BufferedInputStream)) { - in2 = new BufferedInputStream(in2); + if (!(in2 instanceof BufferedInputStream)) { + in2 = new BufferedInputStream(in2); } int ch = in1.read(); - while(ch != -1) { - int ch2 = in2.read(); - if(ch != ch2) + while (ch != -1) { + int ch2 = in2.read(); + if (ch != ch2) { return false; + } ch = in1.read(); } int ch2 = in2.read(); return ch2 == -1; } + /** * Extract the specified library file to the target folder - * + * * @param libFolderForCurrentOS * @param libraryFileName * @param targetFolder * @return */ - private static File extractLibraryFile(String libFolderForCurrentOS, String libraryFileName, String targetFolder) { + private static File extractLibraryFile(String libFolderForCurrentOS, String libraryFileName, String targetFolder) + { String nativeLibraryFilePath = libFolderForCurrentOS + "/" + libraryFileName; // Attach UUID to the native library file to ensure multiple class loaders can read the libsnappy-java multiple times. @@ -221,10 +230,12 @@ public class SnappyLoader // Delete the extracted lib file on JVM exit. extractedLibFile.deleteOnExit(); - if(writer != null) + if (writer != null) { writer.close(); - if(reader != null) + } + if (reader != null) { reader.close(); + } } // Set executable (x) flag to enable Java to load the native library @@ -232,20 +243,22 @@ public class SnappyLoader extractedLibFile.setWritable(true, true); extractedLibFile.setExecutable(true); - // Check whether the contents are properly copied from the resource folder { InputStream nativeIn = SnappyLoader.class.getResourceAsStream(nativeLibraryFilePath); InputStream extractedLibIn = new FileInputStream(extractedLibFile); try { - if(!contentsEquals(nativeIn, extractedLibIn)) + if (!contentsEquals(nativeIn, extractedLibIn)) { throw new SnappyError(SnappyErrorCode.FAILED_TO_LOAD_NATIVE_LIBRARY, String.format("Failed to write a native library file at %s", extractedLibFile)); + } } finally { - if(nativeIn != null) + if (nativeIn != null) { nativeIn.close(); - if(extractedLibIn != null) + } + if (extractedLibIn != null) { extractedLibIn.close(); + } } } @@ -257,44 +270,47 @@ public class SnappyLoader } } - static File findNativeLibrary() { + static File findNativeLibrary() + { boolean useSystemLib = Boolean.parseBoolean(System.getProperty(KEY_SNAPPY_USE_SYSTEMLIB, "false")); boolean disabledBundledLibs = Boolean .parseBoolean(System.getProperty(KEY_SNAPPY_DISABLE_BUNDLED_LIBS, "false")); - if (useSystemLib || disabledBundledLibs) + if (useSystemLib || disabledBundledLibs) { return null; // Use a pre-installed libsnappyjava + } // Try to load the library in org.xerial.snappy.lib.path */ String snappyNativeLibraryPath = System.getProperty(KEY_SNAPPY_LIB_PATH); String snappyNativeLibraryName = System.getProperty(KEY_SNAPPY_LIB_NAME); // Resolve the library file name with a suffix (e.g., dll, .so, etc.) - if (snappyNativeLibraryName == null) + if (snappyNativeLibraryName == null) { snappyNativeLibraryName = System.mapLibraryName("snappyjava"); + } if (snappyNativeLibraryPath != null) { File nativeLib = new File(snappyNativeLibraryPath, snappyNativeLibraryName); - if (nativeLib.exists()) + if (nativeLib.exists()) { return nativeLib; + } } - // Load an OS-dependent native library inside a jar file snappyNativeLibraryPath = "/org/xerial/snappy/native/" + OSInfo.getNativeLibFolderPathForCurrentOS(); boolean hasNativeLib = hasResource(snappyNativeLibraryPath + "/" + snappyNativeLibraryName); - if(!hasNativeLib) { - if(OSInfo.getOSName().equals("Mac")) { + if (!hasNativeLib) { + if (OSInfo.getOSName().equals("Mac")) { // Fix for openjdk7 for Mac String altName = "libsnappyjava.jnilib"; - if(hasResource(snappyNativeLibraryPath + "/" + altName)) { + if (hasResource(snappyNativeLibraryPath + "/" + altName)) { snappyNativeLibraryName = altName; hasNativeLib = true; } } } - if(!hasNativeLib) { + if (!hasNativeLib) { String errorMessage = String.format("no native library is found for os.name=%s and os.arch=%s", OSInfo.getOSName(), OSInfo.getArchName()); throw new SnappyError(SnappyErrorCode.FAILED_TO_LOAD_NATIVE_LIBRARY, errorMessage); } @@ -309,26 +325,26 @@ public class SnappyLoader return extractLibraryFile(snappyNativeLibraryPath, snappyNativeLibraryName, tempFolder.getAbsolutePath()); } - - private static boolean hasResource(String path) { + private static boolean hasResource(String path) + { return SnappyLoader.class.getResource(path) != null; } - - /** * Get the snappy-java version by reading pom.properties embedded in jar. * This version data is used as a suffix of a dll file extracted from the * jar. - * + * * @return the version string */ - public static String getVersion() { + public static String getVersion() + { URL versionFile = SnappyLoader.class .getResource("/META-INF/maven/org.xerial.snappy/snappy-java/pom.properties"); - if (versionFile == null) + if (versionFile == null) { versionFile = SnappyLoader.class.getResource("/org/xerial/snappy/VERSION"); + } String version = "unknown"; try { @@ -336,8 +352,9 @@ public class SnappyLoader Properties versionData = new Properties(); versionData.load(versionFile.openStream()); version = versionData.getProperty("version", version); - if (version.equals("unknown")) + if (version.equals("unknown")) { version = versionData.getProperty("VERSION", version); + } version = version.trim().replaceAll("[^0-9M\\.]", ""); } } @@ -346,5 +363,4 @@ public class SnappyLoader } return version; } - } diff --git a/src/main/java/org/xerial/snappy/SnappyNative.java b/src/main/java/org/xerial/snappy/SnappyNative.java index 2c2d13e..95a6f41 100755 --- a/src/main/java/org/xerial/snappy/SnappyNative.java +++ b/src/main/java/org/xerial/snappy/SnappyNative.java @@ -30,14 +30,13 @@ import java.nio.ByteBuffer; /** * JNI interface of the {@link Snappy} implementation. The native method in this class is * defined in SnappyNative.h (genereted by javah) and SnappyNative.cpp - * + *

*

* DO NOT USE THIS CLASS since the direct use of this class might break the * native library code loading in {@link SnappyLoader}. *

- * + * * @author leo - * */ public class SnappyNative { @@ -47,16 +46,22 @@ public class SnappyNative // ------------------------------------------------------------------------ // Generic compression/decompression routines. // ------------------------------------------------------------------------ - public native long rawCompress(long inputAddr, long inputSize, long destAddr) throws IOException; - public native long rawUncompress(long inputAddr, long inputSize, long destAddr) throws IOException; + public native long rawCompress(long inputAddr, long inputSize, long destAddr) + throws IOException; + + public native long rawUncompress(long inputAddr, long inputSize, long destAddr) + throws IOException; public native int rawCompress(ByteBuffer input, int inputOffset, int inputLength, ByteBuffer compressed, - int outputOffset) throws IOException; + int outputOffset) + throws IOException; - public native int rawCompress(Object input, int inputOffset, int inputByteLength, Object output, int outputOffset) throws IOException; + public native int rawCompress(Object input, int inputOffset, int inputByteLength, Object output, int outputOffset) + throws IOException; public native int rawUncompress(ByteBuffer compressed, int inputOffset, int inputLength, ByteBuffer uncompressed, - int outputOffset) throws IOException; + int outputOffset) + throws IOException; public native int rawUncompress(Object input, int inputOffset, int inputLength, Object output, int outputOffset) throws IOException; @@ -66,22 +71,30 @@ public class SnappyNative public native int maxCompressedLength(int source_bytes); // This operation takes O(1) time. - public native int uncompressedLength(ByteBuffer compressed, int offset, int len) throws IOException; + public native int uncompressedLength(ByteBuffer compressed, int offset, int len) + throws IOException; - public native int uncompressedLength(Object input, int offset, int len) throws IOException; + public native int uncompressedLength(Object input, int offset, int len) + throws IOException; - public native long uncompressedLength(long inputAddr, long len) throws IOException; + public native long uncompressedLength(long inputAddr, long len) + throws IOException; - public native boolean isValidCompressedBuffer(ByteBuffer compressed, int offset, int len) throws IOException; + public native boolean isValidCompressedBuffer(ByteBuffer compressed, int offset, int len) + throws IOException; - public native boolean isValidCompressedBuffer(Object input, int offset, int len) throws IOException; + public native boolean isValidCompressedBuffer(Object input, int offset, int len) + throws IOException; - public native boolean isValidCompressedBuffer(long inputAddr, long offset, long len) throws IOException; + public native boolean isValidCompressedBuffer(long inputAddr, long offset, long len) + throws IOException; - public native void arrayCopy(Object src, int offset, int byteLength, Object dest, int dOffset) throws IOException; + public native void arrayCopy(Object src, int offset, int byteLength, Object dest, int dOffset) + throws IOException; - public void throw_error(int errorCode) throws IOException { + public void throw_error(int errorCode) + throws IOException + { throw new IOException(String.format("%s(%d)", SnappyErrorCode.getErrorMessage(errorCode), errorCode)); } - } diff --git a/src/main/java/org/xerial/snappy/SnappyOutputStream.java b/src/main/java/org/xerial/snappy/SnappyOutputStream.java index 709c804..b25b0b9 100755 --- a/src/main/java/org/xerial/snappy/SnappyOutputStream.java +++ b/src/main/java/org/xerial/snappy/SnappyOutputStream.java @@ -55,7 +55,9 @@ import java.io.OutputStream; * * @author leo */ -public class SnappyOutputStream extends OutputStream { +public class SnappyOutputStream + extends OutputStream +{ static final int MIN_BLOCK_SIZE = 1 * 1024; static final int DEFAULT_BLOCK_SIZE = 32 * 1024; // Use 32kb for the default block size @@ -72,7 +74,8 @@ public class SnappyOutputStream extends OutputStream { private int outputCursor = 0; private boolean closed; - public SnappyOutputStream(OutputStream out) { + public SnappyOutputStream(OutputStream out) + { this(out, DEFAULT_BLOCK_SIZE); } @@ -81,11 +84,13 @@ public class SnappyOutputStream extends OutputStream { * @param blockSize byte size of the internal buffer size * @throws IOException */ - public SnappyOutputStream(OutputStream out, int blockSize) { + public SnappyOutputStream(OutputStream out, int blockSize) + { this(out, blockSize, CachedBufferAllocator.factory); } - public SnappyOutputStream(OutputStream out, int blockSize, BufferAllocatorFactory bufferAllocatorFactory) { + public SnappyOutputStream(OutputStream out, int blockSize, BufferAllocatorFactory bufferAllocatorFactory) + { this.out = out; this.blockSize = Math.max(MIN_BLOCK_SIZE, blockSize); int inputSize = blockSize; @@ -100,72 +105,83 @@ public class SnappyOutputStream extends OutputStream { outputCursor = SnappyCodec.currentHeader.writeHeader(outputBuffer, 0); } - /* (non-Javadoc) * @see java.io.OutputStream#write(byte[], int, int) */ @Override - public void write(byte[] b, int off, int len) throws IOException { + public void write(byte[] b, int off, int len) + throws IOException + { rawWrite(b, off, len); } /** * Compress the input long array data * - * @param d input array + * @param d input array * @param off offset in the array * @param len the number of elements in the array to copy * @throws IOException */ - public void write(long[] d, int off, int len) throws IOException { + public void write(long[] d, int off, int len) + throws IOException + { rawWrite(d, off * 8, len * 8); } /** * Compress the input double array data * - * @param f input array + * @param f input array * @param off offset in the array * @param len the number of elements in the array to copy * @throws IOException */ - public void write(double[] f, int off, int len) throws IOException { + public void write(double[] f, int off, int len) + throws IOException + { rawWrite(f, off * 8, len * 8); } /** * Compress the input float array data * - * @param f input array + * @param f input array * @param off offset in the array * @param len the number of elements in the array to copy * @throws IOException */ - public void write(float[] f, int off, int len) throws IOException { + public void write(float[] f, int off, int len) + throws IOException + { rawWrite(f, off * 4, len * 4); } /** * Compress the input int array data * - * @param f input array + * @param f input array * @param off offset in the array * @param len the number of elements in the array to copy * @throws IOException */ - public void write(int[] f, int off, int len) throws IOException { + public void write(int[] f, int off, int len) + throws IOException + { rawWrite(f, off * 4, len * 4); } /** * Compress the input short array data * - * @param f input array + * @param f input array * @param off offset in the array * @param len the number of elements in the array to copy * @throws IOException */ - public void write(short[] f, int off, int len) throws IOException { + public void write(short[] f, int off, int len) + throws IOException + { rawWrite(f, off * 2, len * 2); } @@ -175,7 +191,9 @@ public class SnappyOutputStream extends OutputStream { * @param d * @throws IOException */ - public void write(long[] d) throws IOException { + public void write(long[] d) + throws IOException + { write(d, 0, d.length); } @@ -185,7 +203,9 @@ public class SnappyOutputStream extends OutputStream { * @param f * @throws IOException */ - public void write(double[] f) throws IOException { + public void write(double[] f) + throws IOException + { write(f, 0, f.length); } @@ -195,7 +215,9 @@ public class SnappyOutputStream extends OutputStream { * @param f * @throws IOException */ - public void write(float[] f) throws IOException { + public void write(float[] f) + throws IOException + { write(f, 0, f.length); } @@ -205,7 +227,9 @@ public class SnappyOutputStream extends OutputStream { * @param f * @throws IOException */ - public void write(int[] f) throws IOException { + public void write(int[] f) + throws IOException + { write(f, 0, f.length); } @@ -215,11 +239,14 @@ public class SnappyOutputStream extends OutputStream { * @param f * @throws IOException */ - public void write(short[] f) throws IOException { + public void write(short[] f) + throws IOException + { write(f, 0, f.length); } - private boolean hasSufficientOutputBufferFor(int inputSize) { + private boolean hasSufficientOutputBufferFor(int inputSize) + { int maxCompressedSize = Snappy.maxCompressedLength(inputSize); return maxCompressedSize < outputBuffer.length - outputCursor - 4; } @@ -227,25 +254,28 @@ public class SnappyOutputStream extends OutputStream { /** * Compress the raw byte array data. * - * @param array array data of any type (e.g., byte[], float[], long[], ...) + * @param array array data of any type (e.g., byte[], float[], long[], ...) * @param byteOffset * @param byteLength * @throws IOException */ - public void rawWrite(Object array, int byteOffset, int byteLength) throws IOException { + public void rawWrite(Object array, int byteOffset, int byteLength) + throws IOException + { if (closed) { throw new IOException("Stream is closed"); } int cursor = 0; - while(cursor < byteLength) { + while (cursor < byteLength) { int readLen = Math.min(byteLength - cursor, blockSize - inputCursor); // copy the input data to uncompressed buffer - if(readLen > 0) { + if (readLen > 0) { Snappy.arrayCopy(array, byteOffset + cursor, readLen, inputBuffer, inputCursor); inputCursor += readLen; } - if(inputCursor < blockSize) + if (inputCursor < blockSize) { return; + } compressInput(); cursor += readLen; @@ -262,11 +292,13 @@ public class SnappyOutputStream extends OutputStream { * @see java.io.OutputStream#write(int) */ @Override - public void write(int b) throws IOException { + public void write(int b) + throws IOException + { if (closed) { throw new IOException("Stream is closed"); } - if(inputCursor >= inputBuffer.length) { + if (inputCursor >= inputBuffer.length) { compressInput(); } inputBuffer[inputCursor++] = (byte) b; @@ -276,7 +308,9 @@ public class SnappyOutputStream extends OutputStream { * @see java.io.OutputStream#flush() */ @Override - public void flush() throws IOException { + public void flush() + throws IOException + { if (closed) { throw new IOException("Stream is closed"); } @@ -285,14 +319,16 @@ public class SnappyOutputStream extends OutputStream { out.flush(); } - static void writeInt(byte[] dst, int offset, int v) { + static void writeInt(byte[] dst, int offset, int v) + { dst[offset] = (byte) ((v >> 24) & 0xFF); dst[offset + 1] = (byte) ((v >> 16) & 0xFF); dst[offset + 2] = (byte) ((v >> 8) & 0xFF); dst[offset + 3] = (byte) ((v >> 0) & 0xFF); } - static int readInt(byte[] buffer, int pos) { + static int readInt(byte[] buffer, int pos) + { int b1 = (buffer[pos] & 0xFF) << 24; int b2 = (buffer[pos + 1] & 0xFF) << 16; int b3 = (buffer[pos + 2] & 0xFF) << 8; @@ -300,20 +336,24 @@ public class SnappyOutputStream extends OutputStream { return b1 | b2 | b3 | b4; } - protected void dumpOutput() throws IOException { - if(outputCursor > 0) { + protected void dumpOutput() + throws IOException + { + if (outputCursor > 0) { out.write(outputBuffer, 0, outputCursor); outputCursor = 0; } } - protected void compressInput() throws IOException { - if(inputCursor <= 0) { + protected void compressInput() + throws IOException + { + if (inputCursor <= 0) { return; // no need to dump } // Compress and dump the buffer content - if(!hasSufficientOutputBufferFor(inputCursor)) { + if (!hasSufficientOutputBufferFor(inputCursor)) { dumpOutput(); } int compressedSize = Snappy.compress(inputBuffer, 0, inputCursor, outputBuffer, outputCursor + 4); @@ -330,14 +370,17 @@ public class SnappyOutputStream extends OutputStream { * @see java.io.OutputStream#close() */ @Override - public void close() throws IOException { + public void close() + throws IOException + { if (closed) { return; } try { flush(); out.close(); - } finally { + } + finally { closed = true; inputBufferAllocator.release(inputBuffer); outputBufferAllocator.release(outputBuffer); @@ -345,5 +388,4 @@ public class SnappyOutputStream extends OutputStream { outputBuffer = null; } } - } diff --git a/src/main/java/org/xerial/snappy/buffer/BufferAllocator.java b/src/main/java/org/xerial/snappy/buffer/BufferAllocator.java index 205a6ea..c36394f 100644 --- a/src/main/java/org/xerial/snappy/buffer/BufferAllocator.java +++ b/src/main/java/org/xerial/snappy/buffer/BufferAllocator.java @@ -3,9 +3,10 @@ package org.xerial.snappy.buffer; /** * BufferAllocator interface. The implementation of this interface must be thread-safe */ -public interface BufferAllocator { +public interface BufferAllocator +{ public byte[] allocate(int size); - public void release(byte[] buffer); + public void release(byte[] buffer); } diff --git a/src/main/java/org/xerial/snappy/buffer/BufferAllocatorFactory.java b/src/main/java/org/xerial/snappy/buffer/BufferAllocatorFactory.java index dda87b6..044eaa6 100644 --- a/src/main/java/org/xerial/snappy/buffer/BufferAllocatorFactory.java +++ b/src/main/java/org/xerial/snappy/buffer/BufferAllocatorFactory.java @@ -3,7 +3,8 @@ package org.xerial.snappy.buffer; /** * */ -public interface BufferAllocatorFactory { +public interface BufferAllocatorFactory +{ BufferAllocator getBufferAllocator(int minSize); } diff --git a/src/main/java/org/xerial/snappy/buffer/CachedBufferAllocator.java b/src/main/java/org/xerial/snappy/buffer/CachedBufferAllocator.java index eacc50b..a0ee40d 100644 --- a/src/main/java/org/xerial/snappy/buffer/CachedBufferAllocator.java +++ b/src/main/java/org/xerial/snappy/buffer/CachedBufferAllocator.java @@ -6,11 +6,15 @@ import java.util.*; /** * Cached buffer */ -public class CachedBufferAllocator implements BufferAllocator { +public class CachedBufferAllocator + implements BufferAllocator +{ - public static BufferAllocatorFactory factory = new BufferAllocatorFactory() { + public static BufferAllocatorFactory factory = new BufferAllocatorFactory() + { @Override - public BufferAllocator getBufferAllocator(int bufferSize) { + public BufferAllocator getBufferAllocator(int bufferSize) + { return CachedBufferAllocator.getAllocator(bufferSize); } }; @@ -23,12 +27,14 @@ public class CachedBufferAllocator implements BufferAllocator { private final int bufferSize; private final Deque bufferQueue; - public CachedBufferAllocator(int bufferSize) { + public CachedBufferAllocator(int bufferSize) + { this.bufferSize = bufferSize; this.bufferQueue = new ArrayDeque(); } - public static synchronized CachedBufferAllocator getAllocator(int bufferSize) { + public static synchronized CachedBufferAllocator getAllocator(int bufferSize) + { CachedBufferAllocator result = null; if (queueTable.containsKey(bufferSize)) { @@ -42,9 +48,10 @@ public class CachedBufferAllocator implements BufferAllocator { } @Override - public byte[] allocate(int size) { - synchronized(this) { - if(bufferQueue.isEmpty()) { + public byte[] allocate(int size) + { + synchronized (this) { + if (bufferQueue.isEmpty()) { return new byte[size]; } else { @@ -52,9 +59,11 @@ public class CachedBufferAllocator implements BufferAllocator { } } } + @Override - public void release(byte[] buffer) { - synchronized(this) { + public void release(byte[] buffer) + { + synchronized (this) { bufferQueue.addLast(buffer); } } diff --git a/src/main/java/org/xerial/snappy/buffer/DefaultBufferAllocator.java b/src/main/java/org/xerial/snappy/buffer/DefaultBufferAllocator.java index 0c459bc..9d9006f 100644 --- a/src/main/java/org/xerial/snappy/buffer/DefaultBufferAllocator.java +++ b/src/main/java/org/xerial/snappy/buffer/DefaultBufferAllocator.java @@ -3,24 +3,30 @@ package org.xerial.snappy.buffer; /** * Simple buffer allocator, which does not reuse the allocated buffer */ -public class DefaultBufferAllocator implements BufferAllocator { +public class DefaultBufferAllocator + implements BufferAllocator +{ - public static BufferAllocatorFactory factory = new BufferAllocatorFactory() { + public static BufferAllocatorFactory factory = new BufferAllocatorFactory() + { public BufferAllocator singleton = new DefaultBufferAllocator(); + @Override - public BufferAllocator getBufferAllocator(int bufferSize) { + public BufferAllocator getBufferAllocator(int bufferSize) + { return singleton; } }; @Override - public byte[] allocate(int size) { + public byte[] allocate(int size) + { return new byte[size]; } @Override - public void release(byte[] buffer) { + public void release(byte[] buffer) + { // do nothing } - } diff --git a/src/main/java/org/xerial/snappy/package-info.java b/src/main/java/org/xerial/snappy/package-info.java index ab691e0..cd4d75e 100755 --- a/src/main/java/org/xerial/snappy/package-info.java +++ b/src/main/java/org/xerial/snappy/package-info.java @@ -16,7 +16,7 @@ /** * Snappy API for compressing/decompressing data. - * + *

* Usage * First, import {@link org.xerial.snappy.Snappy} in your Java code: * @@ -34,9 +34,9 @@ * System.out.println(result); * * - * + *

*

In addition, high-level methods (Snappy.compress(String), Snappy.compress(float[] ..) etc. ) and low-level ones (e.g. Snappy.rawCompress(.. ), Snappy.rawUncompress(..), etc.), which minimize memory copies, can be used.

- * + *

*

Stream-based API

* Stream-based compressor/decompressor SnappyOutputStream, SnappyInputStream are also available for reading/writing large data sets. */ diff --git a/src/test/java/org/xerial/snappy/CalgaryTest.java b/src/test/java/org/xerial/snappy/CalgaryTest.java index cd2f916..18d4dec 100755 --- a/src/test/java/org/xerial/snappy/CalgaryTest.java +++ b/src/test/java/org/xerial/snappy/CalgaryTest.java @@ -43,35 +43,40 @@ import org.xerial.util.log.Logger; /** * Benchmark using Calgary data set - * + * * @author leo - * */ public class CalgaryTest { private static Logger _logger = Logger.getLogger(CalgaryTest.class); - + @Rule public final TemporaryFolder tempFolder = new TemporaryFolder(); - static byte[] readFile(String file) throws IOException { + static byte[] readFile(String file) + throws IOException + { InputStream in = FileResource.find(CalgaryTest.class, file).openStream(); - if (in == null) + if (in == null) { throw new IOException("file " + file + " is not found"); + } try { return SnappyInputStreamTest.readFully(in); } finally { - if (in != null) + if (in != null) { in.close(); + } } } - public static final String[] files = { "bib", "book1", "book2", "geo", "news", "obj1", "obj2", "paper1", "paper2", - "paper3", "paper4", "paper5", "paper6", "pic", "progc", "progl", "progp", "trans" }; + public static final String[] files = {"bib", "book1", "book2", "geo", "news", "obj1", "obj2", "paper1", "paper2", + "paper3", "paper4", "paper5", "paper6", "pic", "progc", "progl", "progp", "trans"}; @Test - public void block() throws Exception { + public void block() + throws Exception + { for (String f : files) { byte[] orig = readFile("testdata/calgary/" + f); @@ -83,7 +88,9 @@ public class CalgaryTest } @Test - public void stream() throws Exception { + public void stream() + throws Exception + { for (String f : files) { byte[] orig = readFile("testdata/calgary/" + f); @@ -101,7 +108,9 @@ public class CalgaryTest } @Test - public void streamFramed() throws Exception { + public void streamFramed() + throws Exception + { for (String f : files) { byte[] orig = readFile("testdata/calgary/" + f); @@ -111,54 +120,54 @@ public class CalgaryTest out.close(); SnappyFramedInputStream in = new SnappyFramedInputStream(new ByteArrayInputStream(compressedBuf.toByteArray())); - + byte[] uncompressed = new byte[orig.length]; int readBytes = readBytes(in, uncompressed, 0, orig.length); - + assertEquals(orig.length, readBytes); assertArrayEquals(orig, uncompressed); } } @Test - public void streamFramedToFile() throws Exception { + public void streamFramedToFile() + throws Exception + { for (String f : files) { byte[] orig = readFile("testdata/calgary/" + f); final File tempFile = tempFolder.newFile(f); final FileOutputStream compressedFOS = new FileOutputStream(tempFile); - try - { + try { SnappyFramedOutputStream out = new SnappyFramedOutputStream(compressedFOS); out.write(orig); out.close(); } - finally - { + finally { compressedFOS.close(); } - + byte[] uncompressed = new byte[orig.length]; final FileInputStream compressedFIS = new FileInputStream(tempFile); - try - { + try { SnappyFramedInputStream in = new SnappyFramedInputStream(compressedFIS.getChannel()); int readBytes = readBytes(in, uncompressed, 0, orig.length); - + assertEquals(orig.length, readBytes); } - finally - { + finally { compressedFIS.close(); } - + assertArrayEquals(orig, uncompressed); } } @Test - public void streamFramedNoCRCVerify() throws Exception { + public void streamFramedNoCRCVerify() + throws Exception + { for (String f : files) { byte[] orig = readFile("testdata/calgary/" + f); @@ -168,17 +177,19 @@ public class CalgaryTest out.close(); SnappyFramedInputStream in = new SnappyFramedInputStream(new ByteArrayInputStream(compressedBuf.toByteArray()), false); - + byte[] uncompressed = new byte[orig.length]; int readBytes = readBytes(in, uncompressed, 0, orig.length); - + assertEquals(orig.length, readBytes); assertArrayEquals(orig, uncompressed); } } @Test - public void byteWiseRead() throws Exception { + public void byteWiseRead() + throws Exception + { for (String f : files) { byte[] orig = readFile("testdata/calgary/" + f); @@ -190,10 +201,11 @@ public class CalgaryTest SnappyInputStream in = new SnappyInputStream(new ByteArrayInputStream(compressedBuf.toByteArray())); byte[] uncompressed = new byte[orig.length]; int cursor = 0; - for (;;) { + for (; ; ) { int b = in.read(); - if (b == -1) + if (b == -1) { break; + } uncompressed[cursor++] = (byte) b; } assertEquals(orig.length, cursor); @@ -201,24 +213,22 @@ public class CalgaryTest } } - static final int readBytes(InputStream source, byte[] dest, int offset, int length) throws IOException - { + static final int readBytes(InputStream source, byte[] dest, int offset, int length) + throws IOException + { // how many bytes were read. int lastRead = source.read(dest, offset, length); int totalRead = lastRead; // if we did not read as many bytes as we had hoped, try reading again. - if (lastRead < length) - { + if (lastRead < length) { // as long the buffer is not full (remaining() == 0) and we have not reached EOF (lastRead == -1) keep reading. - while (totalRead < length && lastRead != -1) - { + while (totalRead < length && lastRead != -1) { lastRead = source.read(dest, offset + totalRead, length - totalRead); // if we got EOF, do not add to total read. - if (lastRead != -1) - { + if (lastRead != -1) { totalRead += lastRead; } } diff --git a/src/test/java/org/xerial/snappy/OSInfoTest.java b/src/test/java/org/xerial/snappy/OSInfoTest.java index 64c9827..0ae7b2a 100755 --- a/src/test/java/org/xerial/snappy/OSInfoTest.java +++ b/src/test/java/org/xerial/snappy/OSInfoTest.java @@ -34,7 +34,8 @@ import org.junit.Test; public class OSInfoTest { @Test - public void osName() { + public void osName() + { assertEquals("Windows", OSInfo.translateOSNameToFolderName("Windows XP")); assertEquals("Windows", OSInfo.translateOSNameToFolderName("Windows 2000")); assertEquals("Windows", OSInfo.translateOSNameToFolderName("Windows Vista")); @@ -53,7 +54,8 @@ public class OSInfoTest } @Test - public void archName() { + public void archName() + { assertEquals("i386", OSInfo.translateArchNameToFolderName("i386")); assertEquals("x86", OSInfo.translateArchNameToFolderName("x86")); assertEquals("ppc", OSInfo.translateArchNameToFolderName("ppc")); @@ -61,7 +63,8 @@ public class OSInfoTest } @Test - public void folderPath() { + public void folderPath() + { String[] component = OSInfo.getNativeLibFolderPathForCurrentOS().split("/"); assertEquals(2, component.length); assertEquals(OSInfo.getOSName(), component[0]); @@ -69,7 +72,9 @@ public class OSInfoTest } @Test - public void testMainForOSName() throws Exception { + public void testMainForOSName() + throws Exception + { // preserve the current System.out PrintStream out = System.out; @@ -78,18 +83,19 @@ public class OSInfoTest ByteArrayOutputStream buf = new ByteArrayOutputStream(); PrintStream tmpOut = new PrintStream(buf); System.setOut(tmpOut); - OSInfo.main(new String[] { "--os" }); + OSInfo.main(new String[] {"--os"}); assertEquals(OSInfo.getOSName(), buf.toString()); } finally { // reset STDOUT System.setOut(out); } - } @Test - public void testMainForArchName() throws Exception { + public void testMainForArchName() + throws Exception + { // preserver the current System.out PrintStream out = System.out; @@ -98,7 +104,7 @@ public class OSInfoTest ByteArrayOutputStream buf = new ByteArrayOutputStream(); PrintStream tmpOut = new PrintStream(buf); System.setOut(tmpOut); - OSInfo.main(new String[] { "--arch" }); + OSInfo.main(new String[] {"--arch"}); assertEquals(OSInfo.getArchName(), buf.toString()); } finally { @@ -106,5 +112,4 @@ public class OSInfoTest System.setOut(out); } } - } diff --git a/src/test/java/org/xerial/snappy/RandomGenerator.java b/src/test/java/org/xerial/snappy/RandomGenerator.java index 92f13a4..e0f9c9f 100644 --- a/src/test/java/org/xerial/snappy/RandomGenerator.java +++ b/src/test/java/org/xerial/snappy/RandomGenerator.java @@ -7,17 +7,19 @@ import java.util.Random; /** * Generates random data with specific expected snappy performance characteristics. - * + *

*

* This has been copied from dain's snappy implementation.. *

*/ -public class RandomGenerator { - +public class RandomGenerator +{ + public final byte[] data; public int position; - public RandomGenerator(double compressionRatio) { + public RandomGenerator(double compressionRatio) + { // We use a limited amount of data over and over again and ensure // that it is larger than the compression window (32KB), and also // large enough to serve all typical value sizes we want to write. @@ -30,7 +32,8 @@ public class RandomGenerator { } } - public int getNextPosition(int length) { + public int getNextPosition(int length) + { if (position + length > data.length) { position = 0; assert (length < data.length); @@ -41,7 +44,8 @@ public class RandomGenerator { } private static byte[] compressibleData(Random random, - double compressionRatio, int length) { + double compressionRatio, int length) + { int raw = (int) (length * compressionRatio); if (raw < 1) { raw = 1; @@ -50,7 +54,7 @@ public class RandomGenerator { // Duplicate the random data until we have filled "length" bytes byte[] dest = new byte[length]; - for (int i = 0; i < length;) { + for (int i = 0; i < length; ) { int chunkLength = Math.min(rawData.length, length - i); System.arraycopy(rawData, 0, dest, i, chunkLength); i += chunkLength; @@ -58,7 +62,8 @@ public class RandomGenerator { return dest; } - private static byte[] generateRandomData(Random random, int length) { + private static byte[] generateRandomData(Random random, int length) + { byte[] rawData = new byte[length]; for (int i = 0; i < rawData.length; i++) { rawData[i] = (byte) random.nextInt(256); diff --git a/src/test/java/org/xerial/snappy/SnappyFramedStreamTest.java b/src/test/java/org/xerial/snappy/SnappyFramedStreamTest.java index f2801f7..b03ec87 100644 --- a/src/test/java/org/xerial/snappy/SnappyFramedStreamTest.java +++ b/src/test/java/org/xerial/snappy/SnappyFramedStreamTest.java @@ -26,35 +26,42 @@ import org.junit.Test; /** * Tests the functionality of {@link org.xerial.snappy.SnappyFramedInputStream} * and {@link org.xerial.snappy.SnappyFramedOutputStream}. - * + * * @author Brett Okken */ -public class SnappyFramedStreamTest { +public class SnappyFramedStreamTest +{ /** * @throws IOException */ protected OutputStream createOutputStream(OutputStream target) - throws IOException { + throws IOException + { return new SnappyFramedOutputStream(target); } /** * {@inheritDoc} - * + * * @throws IOException */ protected InputStream createInputStream(InputStream source, - boolean verifyCheckSums) throws IOException { + boolean verifyCheckSums) + throws IOException + { return new SnappyFramedInputStream(source, verifyCheckSums); } - protected byte[] getMarkerFrame() { + protected byte[] getMarkerFrame() + { return HEADER_BYTES; } @Test - public void testSimple() throws Exception { + public void testSimple() + throws Exception + { byte[] original = "aaaaaaaaaaaabbbbbbbaaaaaa".getBytes("utf-8"); byte[] compressed = compress(original); @@ -83,7 +90,9 @@ public class SnappyFramedStreamTest { } @Test - public void testUncompressable() throws Exception { + public void testUncompressable() + throws Exception + { byte[] random = getRandom(1, 5000); int crc32c = maskedCrc32c(random); @@ -103,71 +112,90 @@ public class SnappyFramedStreamTest { } @Test - public void testEmptyCompression() throws Exception { + public void testEmptyCompression() + throws Exception + { byte[] empty = new byte[0]; assertArrayEquals(compress(empty), HEADER_BYTES); assertArrayEquals(uncompress(HEADER_BYTES), empty); } @Test(expected = EOFException.class) - public void testShortBlockHeader() throws Exception { - uncompressBlock(new byte[] { 0 }); + public void testShortBlockHeader() + throws Exception + { + uncompressBlock(new byte[] {0}); } @Test(expected = EOFException.class) - public void testShortBlockData() throws Exception { + public void testShortBlockData() + throws Exception + { // flag = 0, size = 8, crc32c = 0, block data= [x, x] - uncompressBlock(new byte[] { 1, 8, 0, 0, 0, 0, 0, 0, 'x', 'x' }); + uncompressBlock(new byte[] {1, 8, 0, 0, 0, 0, 0, 0, 'x', 'x'}); } @Test - public void testUnskippableChunkFlags() throws Exception { + public void testUnskippableChunkFlags() + throws Exception + { for (int i = 2; i <= 0x7f; i++) { try { - uncompressBlock(new byte[] { (byte) i, 5, 0, 0, 0, 0, 0, 0, 0 }); + uncompressBlock(new byte[] {(byte) i, 5, 0, 0, 0, 0, 0, 0, 0}); fail("no exception thrown with flag: " + Integer.toHexString(i)); - } catch (IOException e) { + } + catch (IOException e) { } } } @Test - public void testSkippableChunkFlags() throws Exception { + public void testSkippableChunkFlags() + throws Exception + { for (int i = 0x80; i <= 0xfe; i++) { try { - uncompressBlock(new byte[] { (byte) i, 5, 0, 0, 0, 0, 0, 0, 0 }); - } catch (IOException e) { + uncompressBlock(new byte[] {(byte) i, 5, 0, 0, 0, 0, 0, 0, 0}); + } + catch (IOException e) { fail("exception thrown with flag: " + Integer.toHexString(i)); } } } @Test(expected = IOException.class) - public void testInvalidBlockSizeZero() throws Exception { + public void testInvalidBlockSizeZero() + throws Exception + { // flag = '0', block size = 4, crc32c = 0 - uncompressBlock(new byte[] { 1, 4, 0, 0, 0, 0, 0, 0 }); + uncompressBlock(new byte[] {1, 4, 0, 0, 0, 0, 0, 0}); } @Test(expected = IOException.class) - public void testInvalidChecksum() throws Exception { + public void testInvalidChecksum() + throws Exception + { // flag = 0, size = 5, crc32c = 0, block data = [a] - uncompressBlock(new byte[] { 1, 5, 0, 0, 0, 0, 0, 0, 'a' }); + uncompressBlock(new byte[] {1, 5, 0, 0, 0, 0, 0, 0, 'a'}); } @Test public void testInvalidChecksumIgnoredWhenVerificationDisabled() - throws Exception { + throws Exception + { // flag = 0, size = 4, crc32c = 0, block data = [a] - byte[] block = { 1, 5, 0, 0, 0, 0, 0, 0, 'a' }; + byte[] block = {1, 5, 0, 0, 0, 0, 0, 0, 'a'}; ByteArrayInputStream inputData = new ByteArrayInputStream( blockToStream(block)); assertArrayEquals(toByteArray(createInputStream(inputData, false)), - new byte[] { 'a' }); + new byte[] {'a'}); } @Test - public void testTransferFrom_InputStream() throws IOException { + public void testTransferFrom_InputStream() + throws IOException + { final byte[] random = getRandom(0.5, 100000); final ByteArrayOutputStream baos = new ByteArrayOutputStream( @@ -184,7 +212,9 @@ public class SnappyFramedStreamTest { } @Test - public void testTransferFrom_ReadableByteChannel() throws IOException { + public void testTransferFrom_ReadableByteChannel() + throws IOException + { final byte[] random = getRandom(0.5, 100000); final ByteArrayOutputStream baos = new ByteArrayOutputStream( @@ -201,7 +231,9 @@ public class SnappyFramedStreamTest { } @Test - public void testTransferTo_OutputStream() throws IOException { + public void testTransferTo_OutputStream() + throws IOException + { final byte[] random = getRandom(0.5, 100000); final byte[] compressed = compress(random); @@ -216,7 +248,9 @@ public class SnappyFramedStreamTest { } @Test - public void testTransferTo_WritableByteChannel() throws IOException { + public void testTransferTo_WritableByteChannel() + throws IOException + { final byte[] random = getRandom(0.5, 100000); final byte[] compressed = compress(random); @@ -233,14 +267,16 @@ public class SnappyFramedStreamTest { } @Test - public void testLargerFrames_raw_() throws IOException { + public void testLargerFrames_raw_() + throws IOException + { final byte[] random = getRandom(0.5, 100000); final byte[] stream = new byte[HEADER_BYTES.length + 8 + random.length]; System.arraycopy(HEADER_BYTES, 0, stream, 0, HEADER_BYTES.length); stream[10] = UNCOMPRESSED_DATA_FLAG; - + int length = random.length + 4; stream[11] = (byte) length; stream[12] = (byte) (length >>> 8); @@ -260,16 +296,18 @@ public class SnappyFramedStreamTest { } @Test - public void testLargerFrames_compressed_() throws IOException { + public void testLargerFrames_compressed_() + throws IOException + { final byte[] random = getRandom(0.5, 500000); final byte[] compressed = Snappy.compress(random); - + final byte[] stream = new byte[HEADER_BYTES.length + 8 + compressed.length]; System.arraycopy(HEADER_BYTES, 0, stream, 0, HEADER_BYTES.length); stream[10] = COMPRESSED_DATA_FLAG; - + int length = compressed.length + 4; stream[11] = (byte) length; stream[12] = (byte) (length >>> 8); @@ -290,7 +328,8 @@ public class SnappyFramedStreamTest { @Test public void testLargerFrames_compressed_smaller_raw_larger() - throws IOException { + throws IOException + { final byte[] random = getRandom(0.5, 100000); final byte[] compressed = Snappy.compress(random); @@ -300,7 +339,7 @@ public class SnappyFramedStreamTest { System.arraycopy(HEADER_BYTES, 0, stream, 0, HEADER_BYTES.length); stream[10] = COMPRESSED_DATA_FLAG; - + int length = compressed.length + 4; stream[11] = (byte) length; stream[12] = (byte) (length >>> 8); @@ -319,19 +358,23 @@ public class SnappyFramedStreamTest { assertArrayEquals(random, uncompressed); } - private byte[] uncompressBlock(byte[] block) throws IOException { + private byte[] uncompressBlock(byte[] block) + throws IOException + { return uncompress(blockToStream(block)); } - private static byte[] blockToStream(byte[] block) { + private static byte[] blockToStream(byte[] block) + { byte[] stream = new byte[HEADER_BYTES.length + block.length]; System.arraycopy(HEADER_BYTES, 0, stream, 0, HEADER_BYTES.length); System.arraycopy(block, 0, stream, HEADER_BYTES.length, block.length); return stream; } - - protected byte[] compress(byte[] original) throws IOException { + protected byte[] compress(byte[] original) + throws IOException + { ByteArrayOutputStream out = new ByteArrayOutputStream(); OutputStream snappyOut = createOutputStream(out); snappyOut.write(original); @@ -339,29 +382,35 @@ public class SnappyFramedStreamTest { return out.toByteArray(); } - protected byte[] uncompress(byte[] compressed) throws IOException { - return toByteArray(createInputStream(new ByteArrayInputStream( + protected byte[] uncompress(byte[] compressed) + throws IOException + { + return toByteArray(createInputStream(new ByteArrayInputStream( compressed), true)); } - private static byte[] toByteArray(InputStream createInputStream) throws IOException { + private static byte[] toByteArray(InputStream createInputStream) + throws IOException + { final ByteArrayOutputStream baos = new ByteArrayOutputStream(64 * 1024); - + final byte[] buffer = new byte[8 * 1024]; - + int read; - while((read = createInputStream.read(buffer)) > 0) { + while ((read = createInputStream.read(buffer)) > 0) { baos.write(buffer, 0, read); } - + return baos.toByteArray(); } - - static int toInt(byte value) { + + static int toInt(byte value) + { return value & 0xFF; } - private byte[] getRandom(double compressionRatio, int length) { + private byte[] getRandom(double compressionRatio, int length) + { RandomGenerator gen = new RandomGenerator( compressionRatio); gen.getNextPosition(length); @@ -369,5 +418,4 @@ public class SnappyFramedStreamTest { assertEquals(random.length, length); return random; } - } diff --git a/src/test/java/org/xerial/snappy/SnappyInputStreamTest.java b/src/test/java/org/xerial/snappy/SnappyInputStreamTest.java index c1c9930..31139a3 100755 --- a/src/test/java/org/xerial/snappy/SnappyInputStreamTest.java +++ b/src/test/java/org/xerial/snappy/SnappyInputStreamTest.java @@ -41,18 +41,22 @@ public class SnappyInputStreamTest { private static Logger _logger = Logger.getLogger(SnappyInputStreamTest.class); - public static byte[] readResourceFile(String fileName) throws IOException { + public static byte[] readResourceFile(String fileName) + throws IOException + { BufferedInputStream input = new BufferedInputStream(FileResource.find(SnappyOutputStreamTest.class, fileName) .openStream()); assertNotNull(input); return readFully(input); } - public static byte[] readFully(InputStream input) throws IOException { + public static byte[] readFully(InputStream input) + throws IOException + { try { ByteArrayOutputStream out = new ByteArrayOutputStream(); byte[] buf = new byte[4096]; - for (int readBytes = 0; (readBytes = input.read(buf)) != -1;) { + for (int readBytes = 0; (readBytes = input.read(buf)) != -1; ) { out.write(buf, 0, readBytes); } out.flush(); @@ -63,10 +67,12 @@ public class SnappyInputStreamTest } } - public static byte[] byteWiseReadFully(InputStream input) throws IOException { + public static byte[] byteWiseReadFully(InputStream input) + throws IOException + { ByteArrayOutputStream out = new ByteArrayOutputStream(); byte[] buf = new byte[4096]; - for (int readData = 0; (readData = input.read()) != -1;) { + for (int readData = 0; (readData = input.read()) != -1; ) { out.write(readData); } out.flush(); @@ -74,7 +80,9 @@ public class SnappyInputStreamTest } @Test - public void read() throws Exception { + public void read() + throws Exception + { ByteArrayOutputStream compressedBuf = new ByteArrayOutputStream(); SnappyOutputStream snappyOut = new SnappyOutputStream(compressedBuf); byte[] orig = readResourceFile("alice29.txt"); @@ -88,11 +96,12 @@ public class SnappyInputStreamTest assertEquals(orig.length, uncompressed.length); assertArrayEquals(orig, uncompressed); - } @Test - public void readBlockCompressedData() throws Exception { + public void readBlockCompressedData() + throws Exception + { byte[] orig = readResourceFile("alice29.txt"); byte[] compressed = Snappy.compress(orig); @@ -104,7 +113,9 @@ public class SnappyInputStreamTest } @Test - public void biteWiseRead() throws Exception { + public void biteWiseRead() + throws Exception + { byte[] orig = readResourceFile("testdata/calgary/paper6"); byte[] compressed = Snappy.compress(orig); @@ -113,17 +124,18 @@ public class SnappyInputStreamTest assertEquals(orig.length, uncompressed.length); assertArrayEquals(orig, uncompressed); - } @Test - public void available() throws Exception { + public void available() + throws Exception + { byte[] orig = readResourceFile("testdata/calgary/paper6"); byte[] compressed = Snappy.compress(orig); SnappyInputStream in = new SnappyInputStream(new ByteArrayInputStream(compressed)); byte[] buf = new byte[4]; - for (int readBytes = 0; (readBytes = in.read(buf)) != -1;) { + for (int readBytes = 0; (readBytes = in.read(buf)) != -1; ) { assertTrue(in.available() >= 0); } assertTrue(in.available() == 0); @@ -131,19 +143,23 @@ public class SnappyInputStreamTest } @Test - public void emptyStream() throws Exception { + public void emptyStream() + throws Exception + { try { SnappyInputStream in = new SnappyInputStream(new ByteArrayInputStream(new byte[0])); byte[] uncompressed = readFully(in); assertEquals(0, uncompressed.length); fail("should not reach here"); } - catch(SnappyIOException e) { + catch (SnappyIOException e) { assertEquals(SnappyErrorCode.EMPTY_INPUT, e.getErrorCode()); } } - public static byte[] compressResource(String resourcePath) throws Exception { + public static byte[] compressResource(String resourcePath) + throws Exception + { ByteArrayOutputStream compressedBuf = new ByteArrayOutputStream(); SnappyOutputStream snappyOut = new SnappyOutputStream(compressedBuf); byte[] orig = readResourceFile(resourcePath); @@ -153,7 +169,9 @@ public class SnappyInputStreamTest } @Test - public void chunkRead() throws Exception { + public void chunkRead() + throws Exception + { byte[] chunk1 = compressResource("alice29.txt"); byte[] chunk2 = compressResource("testdata/calgary/paper6"); @@ -175,5 +193,4 @@ public class SnappyInputStreamTest assertArrayEquals(orig1, uncompressed1); assertArrayEquals(orig2, uncompressed2); } - } diff --git a/src/test/java/org/xerial/snappy/SnappyLoaderTest.java b/src/test/java/org/xerial/snappy/SnappyLoaderTest.java index a27197f..1cee9c5 100755 --- a/src/test/java/org/xerial/snappy/SnappyLoaderTest.java +++ b/src/test/java/org/xerial/snappy/SnappyLoaderTest.java @@ -42,26 +42,31 @@ public class SnappyLoaderTest { private static Logger _logger = Logger.getLogger(SnappyLoaderTest.class); - public static BufferedInputStream openByteStream(Class< ? > referenceClass, String resourceFileName) - throws IOException { + public static BufferedInputStream openByteStream(Class referenceClass, String resourceFileName) + throws IOException + { URL url = FileResource.find(referenceClass, resourceFileName); if (url != null) { return new BufferedInputStream(url.openStream()); } - else + else { return null; + } } - public static String loadIntoString(Class referenceClass, String path) throws IOException { + public static String loadIntoString(Class referenceClass, String path) + throws IOException + { BufferedInputStream in = openByteStream(referenceClass, path); - if (in == null) + if (in == null) { throw new FileNotFoundException( String.format("reference class:%s, path:%s", referenceClass.getName(), path)); + } ByteArrayOutputStream buf = new ByteArrayOutputStream(); try { byte[] tmp = new byte[4028]; - for (int readBytes = 0; (readBytes = in.read(tmp)) != -1;) { + for (int readBytes = 0; (readBytes = in.read(tmp)) != -1; ) { buf.write(tmp, 0, readBytes); } buf.flush(); @@ -73,7 +78,9 @@ public class SnappyLoaderTest } @Test - public void loadSnappyByDiffentClassloadersInTheSameJVM() throws Exception { + public void loadSnappyByDiffentClassloadersInTheSameJVM() + throws Exception + { // Parent class loader cannot see Snappy.class ClassLoader parent = this.getClass().getClassLoader().getParent(); @@ -89,17 +96,17 @@ public class SnappyLoaderTest // Prepare the child class loaders which can load Snappy.class URL classPath = new File("target/classes").toURI().toURL(); - ClassRealm L1 = cw.newRealm("l1", URLClassLoader.newInstance(new URL[] { classPath }, parent)); - ClassRealm L2 = cw.newRealm("l2", URLClassLoader.newInstance(new URL[] { classPath }, parent)); + ClassRealm L1 = cw.newRealm("l1", URLClassLoader.newInstance(new URL[] {classPath}, parent)); + ClassRealm L2 = cw.newRealm("l2", URLClassLoader.newInstance(new URL[] {classPath}, parent)); // Actually load Snappy.class in a child class loader - Class< ? > S1 = L1.loadClass("org.xerial.snappy.Snappy"); + Class S1 = L1.loadClass("org.xerial.snappy.Snappy"); Method m = S1.getMethod("compress", String.class); byte[] v = (byte[]) m.invoke(null, "hello world"); // Load Snappy.class from another child class loader - Class< ? > S2 = L2.loadClass("org.xerial.snappy.Snappy"); + Class S2 = L2.loadClass("org.xerial.snappy.Snappy"); Method m2 = S2.getMethod("compress", String.class); byte[] v2 = (byte[]) m2.invoke(null, "hello world"); @@ -107,17 +114,22 @@ public class SnappyLoaderTest } @Test - public void load() throws Exception { + public void load() + throws Exception + { SnappyLoader.load(); _logger.debug(Snappy.maxCompressedLength(1024)); } @Test - public void autoLoad() throws Exception { + public void autoLoad() + throws Exception + { _logger.debug(Snappy.maxCompressedLength(1024)); } - public static void main(String[] args) { + public static void main(String[] args) + { // Test for loading native library specified in -Djava.library.path System.setProperty(SnappyLoader.KEY_SNAPPY_USE_SYSTEMLIB, "true"); _logger.debug(Snappy.maxCompressedLength(1024)); diff --git a/src/test/java/org/xerial/snappy/SnappyOutputStreamTest.java b/src/test/java/org/xerial/snappy/SnappyOutputStreamTest.java index 0942eb0..63e7122 100755 --- a/src/test/java/org/xerial/snappy/SnappyOutputStreamTest.java +++ b/src/test/java/org/xerial/snappy/SnappyOutputStreamTest.java @@ -44,7 +44,9 @@ public class SnappyOutputStreamTest private static Logger _logger = Logger.getLogger(SnappyOutputStreamTest.class); @Test - public void test() throws Exception { + public void test() + throws Exception + { ByteArrayOutputStream buf = new ByteArrayOutputStream(); SnappyOutputStream sout = new SnappyOutputStream(buf); @@ -54,7 +56,7 @@ public class SnappyOutputStreamTest ByteArrayOutputStream orig = new ByteArrayOutputStream(); byte[] tmp = new byte[1024]; - for (int readBytes = 0; (readBytes = input.read(tmp)) != -1;) { + for (int readBytes = 0; (readBytes = input.read(tmp)) != -1; ) { sout.write(tmp, 0, readBytes); orig.write(tmp, 0, readBytes); // preserve the original data } @@ -68,7 +70,7 @@ public class SnappyOutputStreamTest ByteArrayOutputStream decompressed = new ByteArrayOutputStream(); byte[] compressed = buf.toByteArray(); // decompress - for (int cursor = SnappyCodec.headerSize(); cursor < compressed.length;) { + for (int cursor = SnappyCodec.headerSize(); cursor < compressed.length; ) { int chunkSize = SnappyOutputStream.readInt(compressed, cursor); cursor += 4; byte[] tmpOut = new byte[Snappy.uncompressedLength(compressed, cursor, chunkSize)]; @@ -83,7 +85,9 @@ public class SnappyOutputStreamTest } @Test - public void bufferSize() throws Exception { + public void bufferSize() + throws Exception + { ByteArrayOutputStream b = new ByteArrayOutputStream(); SnappyOutputStream os = new SnappyOutputStream(b, 1500); final int bytesToWrite = 5000; @@ -96,18 +100,21 @@ public class SnappyOutputStreamTest os.close(); SnappyInputStream is = new SnappyInputStream(new ByteArrayInputStream(b.toByteArray())); byte[] buf = new byte[bytesToWrite / 101]; - while (is.read(buf) != -1) {} + while (is.read(buf) != -1) { + } is.close(); } @Test - public void smallWrites() throws Exception { + public void smallWrites() + throws Exception + { byte[] orig = CalgaryTest.readFile("alice29.txt"); ByteArrayOutputStream b = new ByteArrayOutputStream(); SnappyOutputStream out = new SnappyOutputStream(b); - for(byte c : orig) { + for (byte c : orig) { out.write(c); } out.close(); @@ -116,7 +123,7 @@ public class SnappyOutputStreamTest byte[] decompressed = new byte[orig.length]; int cursor = 0; int readLen = 0; - for(int i=0; i < decompressed.length && (readLen = is.read(decompressed, i, decompressed.length-i)) != -1; ) { + for (int i = 0; i < decompressed.length && (readLen = is.read(decompressed, i, decompressed.length - i)) != -1; ) { i += readLen; } is.close(); @@ -125,11 +132,14 @@ public class SnappyOutputStreamTest /** * Compress the input array by passing it chunk-by-chunk to a SnappyOutputStream. + * * @param orig the data to compress * @param maxChunkSize the maximum chunk size, in bytes. * @return the compressed bytes */ - private static byte[] compressAsChunks(byte[] orig, int maxChunkSize) throws Exception { + private static byte[] compressAsChunks(byte[] orig, int maxChunkSize) + throws Exception + { ByteArrayOutputStream b = new ByteArrayOutputStream(); SnappyOutputStream out = new SnappyOutputStream(b); @@ -143,7 +153,9 @@ public class SnappyOutputStreamTest } @Test - public void batchingOfWritesShouldNotAffectCompressedDataSize() throws Exception { + public void batchingOfWritesShouldNotAffectCompressedDataSize() + throws Exception + { // Regression test for issue #100, a bug where the size of compressed data could be affected // by the batching of writes to the SnappyOutputStream rather than the total amount of data // written to the stream. @@ -154,7 +166,7 @@ public class SnappyOutputStreamTest // compression quality: assertEquals(91013, expectedCompressedData.length); // The chunk size should not affect the size of the compressed output: - int[] chunkSizes = new int[] { 1, 100, 1023, 1024, 10000}; + int[] chunkSizes = new int[] {1, 100, 1023, 1024, 10000}; for (int chunkSize : chunkSizes) { byte[] compressedData = compressAsChunks(orig, chunkSize); assertEquals(String.format("when chunk size = %,d", chunkSize), expectedCompressedData.length, compressedData.length); @@ -163,7 +175,9 @@ public class SnappyOutputStreamTest } @Test - public void closeShouldBeIdempotent() throws Exception { + public void closeShouldBeIdempotent() + throws Exception + { // Regression test for issue #107, a bug where close() was non-idempotent and would release // its buffers to the allocator multiple times, which could cause scenarios where two open // SnappyOutputStreams could share the same buffers, leading to stream corruption issues. @@ -197,38 +211,47 @@ public class SnappyOutputStreamTest } @Test - public void writingToClosedStreamShouldThrowIOException() throws IOException { + public void writingToClosedStreamShouldThrowIOException() + throws IOException + { ByteArrayOutputStream b = new ByteArrayOutputStream(); SnappyOutputStream os = new SnappyOutputStream(b); os.close(); try { os.write(4); fail("Expected write() to throw IOException"); - } catch (IOException e) { + } + catch (IOException e) { // Expected exception } try { - os.write(new int[] { 1, 2, 3, 4}); + os.write(new int[] {1, 2, 3, 4}); fail("Expected write() to throw IOException"); - } catch (IOException e) { + } + catch (IOException e) { // Expected exception } } @Test - public void flushingClosedStreamShouldThrowIOException() throws IOException { + public void flushingClosedStreamShouldThrowIOException() + throws IOException + { ByteArrayOutputStream b = new ByteArrayOutputStream(); SnappyOutputStream os = new SnappyOutputStream(b); os.close(); try { os.flush(); - } catch (IOException e) { + } + catch (IOException e) { // Expected exception } } @Test - public void closingStreamShouldMakeBuffersEligibleForGarbageCollection() throws IOException { + public void closingStreamShouldMakeBuffersEligibleForGarbageCollection() + throws IOException + { ByteArrayOutputStream b = new ByteArrayOutputStream(); SnappyOutputStream os = new SnappyOutputStream(b, 4095, DefaultBufferAllocator.factory); WeakReference inputBuffer = new WeakReference(os.inputBuffer); @@ -240,7 +263,9 @@ public class SnappyOutputStreamTest } @Test - public void longArrayCompress() throws Exception { + public void longArrayCompress() + throws Exception + { long[] l = new long[10]; for (int i = 0; i < l.length; ++i) { l[i] = i % 3 + i * 11; @@ -258,15 +283,16 @@ public class SnappyOutputStreamTest assertEquals(10 * 8, readBytes); assertArrayEquals(l, l2); - } @Test - public void writeDoubleArray() throws Exception { + public void writeDoubleArray() + throws Exception + { ByteArrayOutputStream b = new ByteArrayOutputStream(); SnappyOutputStream os = new SnappyOutputStream(b); - double[] orig = new double[] { 1.0, 2.0, 1.4, 0.00343430014, -4.4, 4e-20 }; + double[] orig = new double[] {1.0, 2.0, 1.4, 0.00343430014, -4.4, 4e-20}; os.write(orig); os.close(); @@ -279,11 +305,13 @@ public class SnappyOutputStreamTest } @Test - public void writeFloatArray() throws Exception { + public void writeFloatArray() + throws Exception + { ByteArrayOutputStream b = new ByteArrayOutputStream(); SnappyOutputStream os = new SnappyOutputStream(b); - float[] orig = new float[] { 1.0f, 2.0f, 1.4f, 0.00343430014f, -4.4f, 4e-20f }; + float[] orig = new float[] {1.0f, 2.0f, 1.4f, 0.00343430014f, -4.4f, 4e-20f}; os.write(orig); os.close(); @@ -296,11 +324,13 @@ public class SnappyOutputStreamTest } @Test - public void writeIntArray() throws Exception { + public void writeIntArray() + throws Exception + { ByteArrayOutputStream b = new ByteArrayOutputStream(); SnappyOutputStream os = new SnappyOutputStream(b); - int[] orig = new int[] { 0, -1, -34, 43, 234, 34324, -234 }; + int[] orig = new int[] {0, -1, -34, 43, 234, 34324, -234}; os.write(orig); os.close(); @@ -313,11 +343,13 @@ public class SnappyOutputStreamTest } @Test - public void writeShortArray() throws Exception { + public void writeShortArray() + throws Exception + { ByteArrayOutputStream b = new ByteArrayOutputStream(); SnappyOutputStream os = new SnappyOutputStream(b); - short[] orig = new short[] { 0, -1, -34, 43, 234, 324, -234 }; + short[] orig = new short[] {0, -1, -34, 43, 234, 324, -234}; os.write(orig); os.close(); @@ -328,5 +360,4 @@ public class SnappyOutputStreamTest assertArrayEquals(orig, uncompressed); } - } diff --git a/src/test/java/org/xerial/snappy/SnappyTest.java b/src/test/java/org/xerial/snappy/SnappyTest.java index 9cfe4a9..18b39e9 100755 --- a/src/test/java/org/xerial/snappy/SnappyTest.java +++ b/src/test/java/org/xerial/snappy/SnappyTest.java @@ -38,13 +38,17 @@ public class SnappyTest private static Logger _logger = Logger.getLogger(SnappyTest.class); @Test - public void getVersion() throws Exception { + public void getVersion() + throws Exception + { String version = Snappy.getNativeLibraryVersion(); _logger.debug("version: " + version); } @Test - public void directBufferCheck() throws Exception { + public void directBufferCheck() + throws Exception + { try { ByteBuffer src = ByteBuffer.allocate(1024); @@ -59,11 +63,12 @@ public class SnappyTest } fail("shouldn't reach here"); - } @Test - public void directBuffer() throws Exception { + public void directBuffer() + throws Exception + { StringBuilder s = new StringBuilder(); for (int i = 0; i < 20; ++i) { @@ -109,7 +114,9 @@ public class SnappyTest } @Test - public void bufferOffset() throws Exception { + public void bufferOffset() + throws Exception + { String m = "ACCAGGGGGGGGGGGGGGGGGGGGATAGATATTTCCCGAGATATTTTATATAAAAAAA"; byte[] orig = m.getBytes(); @@ -147,7 +154,9 @@ public class SnappyTest } @Test - public void byteArrayCompress() throws Exception { + public void byteArrayCompress() + throws Exception + { String m = "ACCAGGGGGGGGGGGGGGGGGGGGATAGATATTTCCCGAGATATTTTATATAAAAAAA"; byte[] input = m.getBytes(); @@ -159,11 +168,12 @@ public class SnappyTest int uncompressedSize = Snappy.uncompress(output, 0, compressedSize, uncompressed, 0); String m2 = new String(uncompressed); assertEquals(m, m2); - } @Test - public void rangeCheck() throws Exception { + public void rangeCheck() + throws Exception + { String m = "ACCAGGGGGGGGGGGGGGGGGGGGATAGATATTTCCCGAGATATTTTATATAAAAAAA"; byte[] input = m.getBytes(); byte[] output = new byte[Snappy.maxCompressedLength(input.length)]; @@ -189,11 +199,12 @@ public class SnappyTest bout.limit(bout.limit() - 1); bout.position(1); assertFalse(Snappy.isValidCompressedBuffer(bout)); - } @Test - public void highLevelAPI() throws Exception { + public void highLevelAPI() + throws Exception + { String m = "Hello! 01234 ACGDSFSDFJ World. FDSDF02394234 fdsfda03924"; byte[] input = m.getBytes(); @@ -205,7 +216,9 @@ public class SnappyTest } @Test - public void lowLevelAPI() throws Exception { + public void lowLevelAPI() + throws Exception + { String m = "Hello! 01234 ACGDSFSDFJ World. FDSDF02394234 fdsfda03924"; byte[] input = m.getBytes(); @@ -217,7 +230,9 @@ public class SnappyTest } @Test - public void simpleUsage() throws Exception { + public void simpleUsage() + throws Exception + { String input = "Hello snappy-java! Snappy-java is a JNI-based wrapper" + " for using Snappy from Google (written in C++), a fast compresser/decompresser."; @@ -225,59 +240,72 @@ public class SnappyTest byte[] uncompressed = Snappy.uncompress(compressed); String result = new String(uncompressed, "UTF-8"); _logger.debug(result); - } @Test - public void floatArray() throws Exception { - float[] data = new float[] { 1.0f, -0.3f, 1.3f, 234.4f, 34 }; + public void floatArray() + throws Exception + { + float[] data = new float[] {1.0f, -0.3f, 1.3f, 234.4f, 34}; byte[] compressed = Snappy.compress(data); float[] result = Snappy.uncompressFloatArray(compressed); assertArrayEquals(data, result, 0.0f); } @Test - public void doubleArray() throws Exception { - double[] data = new double[] { 1.0, -0.3, 1.3, 234.4, 34 }; + public void doubleArray() + throws Exception + { + double[] data = new double[] {1.0, -0.3, 1.3, 234.4, 34}; byte[] compressed = Snappy.compress(data); double[] result = Snappy.uncompressDoubleArray(compressed); assertArrayEquals(data, result, 0.0f); } @Test - public void longArray() throws Exception { - long[] data = new long[] { 2, 3, 15, 4234, 43251531412342342L, 23423422342L }; + public void longArray() + throws Exception + { + long[] data = new long[] {2, 3, 15, 4234, 43251531412342342L, 23423422342L}; byte[] compressed = Snappy.compress(data); long[] result = Snappy.uncompressLongArray(compressed); assertArrayEquals(data, result); } @Test - public void shortArray() throws Exception { - short[] data = new short[] { 432, -32267, 1, 3, 34, 43, 34, Short.MAX_VALUE, -1 }; + public void shortArray() + throws Exception + { + short[] data = new short[] {432, -32267, 1, 3, 34, 43, 34, Short.MAX_VALUE, -1}; byte[] compressed = Snappy.compress(data); short[] result = Snappy.uncompressShortArray(compressed); assertArrayEquals(data, result); } @Test - public void intArray() throws Exception { - int[] data = new int[] { 432, -32267, 1, 3, 34, 43, 34, Short.MAX_VALUE, -1, Integer.MAX_VALUE, 3424, 43 }; + public void intArray() + throws Exception + { + int[] data = new int[] {432, -32267, 1, 3, 34, 43, 34, Short.MAX_VALUE, -1, Integer.MAX_VALUE, 3424, 43}; byte[] compressed = Snappy.compress(data); int[] result = Snappy.uncompressIntArray(compressed); assertArrayEquals(data, result); } @Test - public void charArray() throws Exception { - char[] data = new char[] { 'H', 'e', 'l', 'l', 'o', ' ', 'W', 'o', 'r', 'l', 'd', '!' }; + public void charArray() + throws Exception + { + char[] data = new char[] {'H', 'e', 'l', 'l', 'o', ' ', 'W', 'o', 'r', 'l', 'd', '!'}; byte[] compressed = Snappy.compress(data); char[] result = Snappy.uncompressCharArray(compressed); assertArrayEquals(data, result); } @Test - public void string() throws Exception { + public void string() + throws Exception + { String s = "Hello Snappy! Snappy! Snappy!"; byte[] compressed = Snappy.compress(s); String uncompressedString = Snappy.uncompressString(compressed); @@ -285,9 +313,11 @@ public class SnappyTest } @Test - public void isValidCompressedData() throws Exception { + public void isValidCompressedData() + throws Exception + { - byte[] b = new byte[] { (byte) 91, (byte) 34, (byte) 80, (byte) 73, (byte) 34, (byte) 93 }; + byte[] b = new byte[] {(byte) 91, (byte) 34, (byte) 80, (byte) 73, (byte) 34, (byte) 93}; assertFalse(Snappy.isValidCompressedBuffer(b)); @@ -298,7 +328,5 @@ public class SnappyTest catch (IOException e) { _logger.debug(e); } - } - }