mirror of
https://github.com/xerial/snappy-java.git
synced 2025-04-08 19:35:08 +02:00
Merge branch 'release/1.1.0-M4'
This commit is contained in:
Taro L. Saito
commit
baabd37418
24
Makefile
24
Makefile
@ -16,19 +16,27 @@ SNAPPY_UNPACKED:=$(TARGET)/snappy-extracted.log
|
||||
|
||||
CXXFLAGS:=$(CXXFLAGS) -I$(SNAPPY_SRC_DIR)
|
||||
|
||||
ifeq ($(OS_NAME),SunOS)
|
||||
TAR:= gtar
|
||||
else
|
||||
TAR:= tar
|
||||
endif
|
||||
|
||||
$(SNAPPY_ARCHIVE):
|
||||
@mkdir -p $(@D)
|
||||
curl -o$@ http://snappy.googlecode.com/files/snappy-$(VERSION).tar.gz
|
||||
|
||||
$(SNAPPY_UNPACKED): $(SNAPPY_ARCHIVE)
|
||||
tar xvfz $< -C $(TARGET)
|
||||
$(TAR) xvfz $< -C $(TARGET)
|
||||
touch $@
|
||||
|
||||
jni-header: $(SRC)/org/xerial/snappy/SnappyNative.h
|
||||
|
||||
|
||||
$(SRC)/org/xerial/snappy/SnappyNative.h: $(SRC)/org/xerial/snappy/SnappyNative.java
|
||||
$(TARGET)/classes/org/xerial/snappy/SnappyNative.class : $(SRC)/org/xerial/snappy/SnappyNative.java
|
||||
@mkdir -p $(TARGET)/classes
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||||
$(JAVAC) -source 1.6 -target 1.6 -d $(TARGET)/classes -sourcepath $(SRC) $<
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||||
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||||
$(SRC)/org/xerial/snappy/SnappyNative.h: $(TARGET)/classes/org/xerial/snappy/SnappyNative.class
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||||
$(JAVAH) -classpath $(TARGET)/classes -o $@ org.xerial.snappy.SnappyNative
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||||
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||||
bytecode: src/main/resources/org/xerial/snappy/SnappyNativeLoader.bytecode
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||||
@ -86,16 +94,16 @@ win32:
|
||||
|
||||
# for cross-compilation on Ubuntu, install the g++-mingw-w64-x86-64 package
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||||
win64:
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||||
$(MAKE) native CROSS_PREFIX=x86_64-w64-mingw32- OS_NAME=Windows OS_ARCH=amd64
|
||||
$(MAKE) native CROSS_PREFIX=x86_64-w64-mingw32- OS_NAME=Windows OS_ARCH=x86_64
|
||||
|
||||
mac32:
|
||||
$(MAKE) native OS_NAME=Mac OS_ARCH=i386
|
||||
$(MAKE) native OS_NAME=Mac OS_ARCH=x86
|
||||
|
||||
linux32:
|
||||
$(MAKE) native OS_NAME=Linux OS_ARCH=i386
|
||||
$(MAKE) native OS_NAME=Linux OS_ARCH=x86
|
||||
|
||||
freebsd64:
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||||
$(MAKE) native OS_NAME=FreeBSD OS_ARCH=amd64
|
||||
$(MAKE) native OS_NAME=FreeBSD OS_ARCH=x86_64
|
||||
|
||||
# for cross-compilation on Ubuntu, install the g++-arm-linux-gnueabi package
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||||
linux-arm:
|
||||
@ -106,7 +114,7 @@ linux-armhf:
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||||
$(MAKE) native CROSS_PREFIX=arm-linux-gnueabihf- OS_NAME=Linux OS_ARCH=armhf
|
||||
|
||||
clean-native-linux32:
|
||||
$(MAKE) clean-native OS_NAME=Linux OS_ARCH=i386
|
||||
$(MAKE) clean-native OS_NAME=Linux OS_ARCH=x86
|
||||
|
||||
clean-native-win32:
|
||||
$(MAKE) clean-native OS_NAME=Windows OS_ARCH=x86
|
||||
|
||||
@ -33,7 +33,7 @@ endif
|
||||
snappy := snappy-$(VERSION)
|
||||
|
||||
|
||||
jni_md := $(shell find -L "$(JAVA_HOME)" -name jni_md.h)
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||||
jni_md := $(shell find -L "$(JAVA_HOME)" -name jni_md.h | head -1)
|
||||
ifneq ($(jni_md),)
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||||
jni_include := $(shell dirname "$(jni_md)")
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||||
endif
|
||||
@ -41,7 +41,7 @@ endif
|
||||
|
||||
# os=Default is meant to be generic unix/linux
|
||||
|
||||
known_os_archs := Linux-i386 Linux-amd64 Linux-arm Linux-armhf Mac-i386 Mac-x86_64 FreeBSD-amd64 Windows-x86 Windows-amd64
|
||||
known_os_archs := Linux-x86 Linux-x86_64 Linux-arm Linux-armhf Mac-x86 Mac-x86_64 FreeBSD-x86_64 Windows-x86 Windows-x86_64 SunOS-x86 SunOS-sparc
|
||||
os_arch := $(OS_NAME)-$(OS_ARCH)
|
||||
|
||||
ifeq (,$(findstring $(strip $(os_arch)),$(known_os_archs)))
|
||||
@ -58,19 +58,33 @@ Default_LINKFLAGS := -shared -static
|
||||
Default_LIBNAME := libsnappyjava.so
|
||||
Default_SNAPPY_FLAGS :=
|
||||
|
||||
Linux-i386_CXX := $(CROSS_PREFIX)g++
|
||||
Linux-i386_STRIP := $(CROSS_PREFIX)strip
|
||||
Linux-i386_CXXFLAGS := -include lib/inc_linux/jni_md.h -I$(JAVA_HOME)/include -O2 -fPIC -fvisibility=hidden -m32
|
||||
Linux-i386_LINKFLAGS := -shared -static-libgcc -static-libstdc++
|
||||
Linux-i386_LIBNAME := libsnappyjava.so
|
||||
Linux-i386_SNAPPY_FLAGS:=
|
||||
Linux-x86_CXX := $(CROSS_PREFIX)g++
|
||||
Linux-x86_STRIP := $(CROSS_PREFIX)strip
|
||||
Linux-x86_CXXFLAGS := -include lib/inc_linux/jni_md.h -I$(JAVA_HOME)/include -O2 -fPIC -fvisibility=hidden -m32
|
||||
Linux-x86_LINKFLAGS := -shared -static-libgcc -static-libstdc++
|
||||
Linux-x86_LIBNAME := libsnappyjava.so
|
||||
Linux-x86_SNAPPY_FLAGS:=
|
||||
|
||||
Linux-amd64_CXX := $(CROSS_PREFIX)g++
|
||||
Linux-amd64_STRIP := $(CROSS_PREFIX)strip
|
||||
Linux-amd64_CXXFLAGS := -include lib/inc_linux/jni_md.h -I$(JAVA_HOME)/include -O2 -fPIC -fvisibility=hidden -m64
|
||||
Linux-amd64_LINKFLAGS := -shared -static-libgcc -static-libstdc++
|
||||
Linux-amd64_LIBNAME := libsnappyjava.so
|
||||
Linux-amd64_SNAPPY_FLAGS :=
|
||||
Linux-x86_64_CXX := $(CROSS_PREFIX)g++
|
||||
Linux-x86_64_STRIP := $(CROSS_PREFIX)strip
|
||||
Linux-x86_64_CXXFLAGS := -include lib/inc_linux/jni_md.h -I$(JAVA_HOME)/include -O2 -fPIC -fvisibility=hidden -m64
|
||||
Linux-x86_64_LINKFLAGS := -shared -static-libgcc -static-libstdc++
|
||||
Linux-x86_64_LIBNAME := libsnappyjava.so
|
||||
Linux-x86_64_SNAPPY_FLAGS :=
|
||||
|
||||
SunOS-x86_CXX := g++
|
||||
SunOS-x86_STRIP := strip
|
||||
SunOS-x86_CXXFLAGS := -include lib/inc_linux/jni_md.h -I$(JAVA_HOME)/include -O2 -fPIC -fvisibility=hidden
|
||||
SunOS-x86_LINKFLAGS := -shared -static-libgcc -static-libstdc++
|
||||
SunOS-x86_LIBNAME := libsnappyjava.so
|
||||
SunOS-x86_SNAPPY_FLAGS :=
|
||||
|
||||
SunOS-sparc_CXX := g++
|
||||
SunOS-sparc_STRIP := strip
|
||||
SunOS-sparc_CXXFLAGS := -include lib/inc_linux/jni_md.h -I$(JAVA_HOME)/include -O2 -fPIC -fvisibility=hidden
|
||||
SunOS-sparc_LINKFLAGS := -shared -static-libgcc -static-libstdc++
|
||||
SunOS-sparc_LIBNAME := libsnappyjava.so
|
||||
SunOS-sparc_SNAPPY_FLAGS :=
|
||||
|
||||
# '-include lib/inc_linux/jni_md.h' is used to force the use of our version,
|
||||
# which defines JNIEXPORT differently; otherwise, since OpenJDK includes
|
||||
@ -91,12 +105,12 @@ Linux-armhf_LINKFLAGS := -shared -static-libgcc
|
||||
Linux-armhf_LIBNAME := libsnappyjava.so
|
||||
Linux-armhf_SNAPPY_FLAGS:=
|
||||
|
||||
Mac-i386_CXX := g++ -arch $(OS_ARCH)
|
||||
Mac-i386_STRIP := strip -x
|
||||
Mac-i386_CXXFLAGS := -Ilib/inc_mac -I$(JAVA_HOME)/include -O2 -fPIC -mmacosx-version-min=10.4 -fvisibility=hidden
|
||||
Mac-i386_LINKFLAGS := -dynamiclib -static-libgcc
|
||||
Mac-i386_LIBNAME := libsnappyjava.jnilib
|
||||
Mac-i386_SNAPPY_FLAGS :=
|
||||
Mac-x86_CXX := g++ -arch i386
|
||||
Mac-x86_STRIP := strip -x
|
||||
Mac-x86_CXXFLAGS := -Ilib/inc_mac -I$(JAVA_HOME)/include -O2 -fPIC -mmacosx-version-min=10.4 -fvisibility=hidden
|
||||
Mac-x86_LINKFLAGS := -dynamiclib -static-libgcc
|
||||
Mac-x86_LIBNAME := libsnappyjava.jnilib
|
||||
Mac-x86_SNAPPY_FLAGS :=
|
||||
|
||||
Mac-x86_64_CXX := g++ -arch $(OS_ARCH)
|
||||
Mac-x86_64_STRIP := strip -x
|
||||
@ -105,12 +119,12 @@ Mac-x86_64_LINKFLAGS := -dynamiclib -static-libgcc
|
||||
Mac-x86_64_LIBNAME := libsnappyjava.jnilib
|
||||
Mac-x86_64_SNAPPY_FLAGS :=
|
||||
|
||||
FreeBSD-amd64_CXX := $(CROSS_PREFIX)g++
|
||||
FreeBSD-amd64_STRIP := $(CROSS_PREFIX)strip
|
||||
FreeBSD-amd64_CXXFLAGS := -I$(JAVA_HOME)/include -Ilib/inc_mac -O2 -fPIC -fvisibility=hidden
|
||||
FreeBSD-amd64_LINKFLAGS := -shared -static-libgcc
|
||||
FreeBSD-amd64_LIBNAME := libsnappyjava.so
|
||||
FreeBSD-amd64_SNAPPY_FLAGS :=
|
||||
FreeBSD-x86_64_CXX := $(CROSS_PREFIX)g++
|
||||
FreeBSD-x86_64_STRIP := $(CROSS_PREFIX)strip
|
||||
FreeBSD-x86_64_CXXFLAGS := -I$(JAVA_HOME)/include -Ilib/inc_mac -O2 -fPIC -fvisibility=hidden
|
||||
FreeBSD-x86_64_LINKFLAGS := -shared -static-libgcc
|
||||
FreeBSD-x86_64_LIBNAME := libsnappyjava.so
|
||||
FreeBSD-x86_64_SNAPPY_FLAGS :=
|
||||
|
||||
Windows-x86_CXX := $(CROSS_PREFIX)g++
|
||||
Windows-x86_STRIP := $(CROSS_PREFIX)strip
|
||||
@ -119,12 +133,12 @@ Windows-x86_LINKFLAGS := -Wl,--kill-at -shared -static
|
||||
Windows-x86_LIBNAME := snappyjava.dll
|
||||
Windows-x86_SNAPPY_FLAGS :=
|
||||
|
||||
Windows-amd64_CXX := $(CROSS_PREFIX)g++
|
||||
Windows-amd64_STRIP := $(CROSS_PREFIX)strip
|
||||
Windows-amd64_CXXFLAGS := -Ilib/inc_win -O2
|
||||
Windows-amd64_LINKFLAGS := -Wl,--kill-at -shared -static
|
||||
Windows-amd64_LIBNAME := snappyjava.dll
|
||||
Windows-amd64_SNAPPY_FLAGS :=
|
||||
Windows-x86_64_CXX := $(CROSS_PREFIX)g++
|
||||
Windows-x86_64_STRIP := $(CROSS_PREFIX)strip
|
||||
Windows-x86_64_CXXFLAGS := -Ilib/inc_win -O2
|
||||
Windows-x86_64_LINKFLAGS := -Wl,--kill-at -shared -static
|
||||
Windows-x86_64_LIBNAME := snappyjava.dll
|
||||
Windows-x86_64_SNAPPY_FLAGS :=
|
||||
|
||||
|
||||
CXX := $($(os_arch)_CXX)
|
||||
|
||||
12
Milestone.md
12
Milestone.md
@ -2,6 +2,18 @@
|
||||
* `SnappyIndexer` for parallel compression/decompression
|
||||
* CUI commands (snap/unsnap)
|
||||
|
||||
## snappy-java-1.1.0 (TBD)
|
||||
* Add FreeBSD support
|
||||
|
||||
## snappy-java-1.1.0-M4 (20 August 2013)
|
||||
* New JNI native code loading mechanism, which does not rely on native code injection.
|
||||
* Add OpenBSD support
|
||||
* Add Framed format support
|
||||
* Recovered 32-bit Mac support
|
||||
* Fixes several issues
|
||||
* Target to Java6 (Java5 will be no longer supported)
|
||||
* Add zero-copy compression, decompression and isValidCompressedData for LArray <https://github.com/xerial/larray>
|
||||
|
||||
## snappy-java-1.1.0-M3 (28 March 2013)
|
||||
* Fix linux amd64 build (embed libstdc++)
|
||||
* Fixes #26
|
||||
|
||||
3
NOTICE
3
NOTICE
@ -1,6 +1,9 @@
|
||||
This product includes software developed by Google
|
||||
Snappy: http://code.google.com/p/snappy/ (New BSD License)
|
||||
|
||||
This product includes software developed by Apache
|
||||
PureJavaCrc32C from apache-hadoop-common http://hadoop.apache.org/
|
||||
(Apache 2.0 license)
|
||||
|
||||
This library containd statically linked libstdc++. This inclusion is allowed by
|
||||
"GCC RUntime Library Exception"
|
||||
|
||||
@ -8,6 +8,7 @@ The snappy-java is a Java port of the snappy
|
||||
* Although snappy-java uses JNI, it can be used safely with multiple class loaders (e.g. Tomcat, etc.).
|
||||
* Portable across various operating systems; Snappy-java contains native libraries built for Window/Mac/Linux (64-bit). At runtime, snappy-java loads one of these libraries according to your machine environment (It looks system properties, `os.name` and `os.arch`).
|
||||
* Simple usage. Add the snappy-java-(version).jar file to your classpath. Then call compression/decompression methods in org.xerial.snappy.Snappy.
|
||||
* [Framing-format support](http://snappy.googlecode.com/svn/trunk/framing_format.txt) (Since 1.1.0-SNAPSHOT version)
|
||||
|
||||
## Performance
|
||||
* Snappy's main target is very high-speed compression/decompression with reasonable compression size. So the compression ratio of snappy-java is modest and about the same as `LZF` (ranging 20%-100% according to the dataset).
|
||||
@ -53,7 +54,7 @@ In addition, high-level methods (`Snappy.compress(String)`, `Snappy.compress(flo
|
||||
### Stream-based API
|
||||
Stream-based compressor/decompressor `SnappyOutputStream`/`SnappyInputStream` are also available for reading/writing large data sets.
|
||||
|
||||
* [Javadoc API](https://oss.sonatype.org/service/local/repositories/releases/archive/org/xerial/snappy/snappy-java/1.1.0-M3/snappy-java-1.1.0-M3-javadoc.jar/!/index.html)
|
||||
* [Javadoc API](https://oss.sonatype.org/service/local/repositories/releases/archive/org/xerial/snappy/snappy-java/1.1.0-M4/snappy-java-1.1.0-M4-javadoc.jar/!/index.html)
|
||||
|
||||
### Setting classpath
|
||||
If you have snappy-java-(VERSION).jar in the current directory, use `-classpath` option as follows:
|
||||
@ -90,6 +91,9 @@ See the [installation instruction](https://github.com/xerial/snappy-java/blob/de
|
||||
$ cd snappy-java
|
||||
$ make
|
||||
|
||||
When building on Solaris use
|
||||
|
||||
$ gmake
|
||||
|
||||
A file `target/snappy-java-$(version).jar` is the product additionally containing the native library built for your platform.
|
||||
|
||||
@ -125,7 +129,7 @@ If you are using Mac and openjdk7 (or higher), use the following option:
|
||||
## Miscellaneous Notes
|
||||
### Using snappy-java with Tomcat 6 (or higher) Web Server
|
||||
|
||||
Simply put the snappy-java's jar to WEB-INF/lib folder of your web application. Usual JNI-library specific problem no longer exists since snappy-java version 1.0.3 or higher can be loaded by multiple class loaders in the same JVM by using native code injection to the parent class loader (Issue 21).
|
||||
Simply put the snappy-java's jar to WEB-INF/lib folder of your web application. Usual JNI-library specific problem no longer exists since snappy-java version 1.0.3 or higher can be loaded by multiple class loaders.
|
||||
|
||||
----
|
||||
Snappy-java is developed by [Taro L. Saito](http://www.xerial.org/leo). Twitter [@taroleo](http://twitter.com/#!/taroleo)
|
||||
|
||||
Binary file not shown.
21
pom.xml
21
pom.xml
@ -4,7 +4,7 @@
|
||||
<modelVersion>4.0.0</modelVersion>
|
||||
<groupId>org.xerial.snappy</groupId>
|
||||
<artifactId>snappy-java</artifactId>
|
||||
<version>1.1.0-M3</version>
|
||||
<version>1.1.0-M4</version>
|
||||
<name>Snappy for Java</name>
|
||||
<description>snappy-java: A fast compression/decompression library</description>
|
||||
<packaging>bundle</packaging>
|
||||
@ -182,11 +182,14 @@
|
||||
<Import-Package>org.osgi.framework;version="[1.5,2)"</Import-Package>
|
||||
<Bundle-ActivationPolicy>lazy</Bundle-ActivationPolicy>
|
||||
<Bundle-NativeCode>
|
||||
org/xerial/snappy/native/Windows/amd64/snappyjava.dll;selection-filter="(&(osgi.arch=x86_64)(osgi.os=win32))",
|
||||
org/xerial/snappy/native/Windows/x86_64/snappyjava.dll;selection-filter="(&(osgi.arch=x86_64)(osgi.os=win32))",
|
||||
org/xerial/snappy/native/Windows/x86/snappyjava.dll;selection-filter="(&(osgi.arch=x86)(osgi.os=win32))",
|
||||
org/xerial/snappy/native/Mac/x86/libsnappyjava.jnilib;selection-filter="(&(osgi.arch=x86)(osgi.os=macosx))",
|
||||
org/xerial/snappy/native/Mac/x86_64/libsnappyjava.jnilib;selection-filter="(&(osgi.arch=x86_64)(osgi.os=macosx))",
|
||||
org/xerial/snappy/native/Linux/amd64/libsnappyjava.so;selection-filter="(&(osgi.arch=x86_64)(osgi.os=linux))",
|
||||
org/xerial/snappy/native/Linux/i386/libsnappyjava.so;selection-filter="(&(osgi.arch=x86)(osgi.os=linux))",
|
||||
org/xerial/snappy/native/Linux/x86_64/libsnappyjava.so;selection-filter="(&(osgi.arch=x86_64)(osgi.os=linux))",
|
||||
org/xerial/snappy/native/Linux/x86/libsnappyjava.so;selection-filter="(&(osgi.arch=x86)(osgi.os=linux))",
|
||||
org/xerial/snappy/native/SunOS/x86/libsnappyjava.so;selection-filter="(&(osgi.arch=x86)(osgi.os=sunos))",
|
||||
org/xerial/snappy/native/SunOS/sparc/libsnappyjava.so;selection-filter="(&(osgi.arch=sparc)(osgi.os=sunos))",
|
||||
org/xerial/snappy/native/Linux/arm/libsnappyjava.so;selection-filter="(&(osgi.arch=arm)(osgi.os=linux))"
|
||||
</Bundle-NativeCode>
|
||||
<!-- TODO: unsure about ARMHF -->
|
||||
@ -214,7 +217,7 @@
|
||||
</archive>
|
||||
</configuration>
|
||||
</plugin>
|
||||
|
||||
|
||||
<plugin>
|
||||
<groupId>org.apache.maven.plugins</groupId>
|
||||
<artifactId>maven-clean-plugin</artifactId>
|
||||
@ -231,7 +234,7 @@
|
||||
</filesets>
|
||||
</configuration>
|
||||
</plugin>
|
||||
|
||||
|
||||
<plugin>
|
||||
<artifactId>maven-assembly-plugin</artifactId>
|
||||
<version>2.2.1</version>
|
||||
@ -252,7 +255,7 @@
|
||||
</execution>
|
||||
</executions>
|
||||
</plugin>
|
||||
|
||||
|
||||
</plugins>
|
||||
|
||||
<extensions>
|
||||
@ -332,7 +335,7 @@
|
||||
<type>jar</type>
|
||||
<scope>test</scope>
|
||||
</dependency>
|
||||
|
||||
|
||||
</dependencies>
|
||||
|
||||
|
||||
</project>
|
||||
|
||||
@ -25,6 +25,8 @@
|
||||
package org.xerial.snappy;
|
||||
|
||||
import java.io.IOException;
|
||||
import java.util.HashMap;
|
||||
import java.util.Locale;
|
||||
|
||||
/**
|
||||
* Provides OS name and architecture name.
|
||||
@ -34,6 +36,48 @@ import java.io.IOException;
|
||||
*/
|
||||
public class OSInfo
|
||||
{
|
||||
private static HashMap<String, String> archMapping = new HashMap<String, String>();
|
||||
|
||||
public static final String X86 = "x86";
|
||||
public static final String X86_64 = "x86_64";
|
||||
public static final String IA64_32 = "ia64_32";
|
||||
public static final String IA64 = "ia64";
|
||||
public static final String PPC = "ppc";
|
||||
|
||||
static {
|
||||
// x86 mappings
|
||||
archMapping.put(X86, X86);
|
||||
archMapping.put("i386", X86);
|
||||
archMapping.put("i486", X86);
|
||||
archMapping.put("i586", X86);
|
||||
archMapping.put("i686", X86);
|
||||
archMapping.put("pentium", X86);
|
||||
|
||||
// x86_64 mappings
|
||||
archMapping.put(X86_64, X86_64);
|
||||
archMapping.put("amd64", X86_64);
|
||||
archMapping.put("em64t", X86_64);
|
||||
archMapping.put("universal", X86_64); // Needed for openjdk7 in Mac
|
||||
|
||||
// Itenium 64-bit mappings
|
||||
archMapping.put(IA64, IA64);
|
||||
archMapping.put("ia64w", IA64);
|
||||
|
||||
// Itenium 32-bit mappings, usually an HP-UX construct
|
||||
archMapping.put(IA64_32, IA64_32);
|
||||
archMapping.put("ia64n", IA64_32);
|
||||
|
||||
// PowerPC mappings
|
||||
archMapping.put(PPC, PPC);
|
||||
archMapping.put("pwoer", PPC);
|
||||
archMapping.put("powerpc", PPC);
|
||||
archMapping.put("power_pc", PPC);
|
||||
archMapping.put("power_rs", PPC);
|
||||
|
||||
// TODO: PowerPC 64bit mappings
|
||||
}
|
||||
|
||||
|
||||
public static void main(String[] args) {
|
||||
if (args.length >= 1) {
|
||||
if ("--os".equals(args[0])) {
|
||||
@ -78,8 +122,10 @@ public class OSInfo
|
||||
// ignored: fall back to "arm" arch (soft-float ABI)
|
||||
}
|
||||
}
|
||||
else if(getOSName().equals("Mac") && (osArch.equals("universal") || osArch.equals("amd64"))) {
|
||||
return "x86_64"; // Fix for openjdk7
|
||||
else {
|
||||
String lc = osArch.toLowerCase(Locale.US);
|
||||
if(archMapping.containsKey(lc))
|
||||
return archMapping.get(lc);
|
||||
}
|
||||
return translateArchNameToFolderName(osArch);
|
||||
}
|
||||
|
||||
617
src/main/java/org/xerial/snappy/PureJavaCrc32C.java
Normal file
617
src/main/java/org/xerial/snappy/PureJavaCrc32C.java
Normal file
@ -0,0 +1,617 @@
|
||||
/**
|
||||
* Licensed to the Apache Software Foundation (ASF) under one
|
||||
* or more contributor license agreements. See the NOTICE file
|
||||
* distributed with this work for additional information
|
||||
* regarding copyright ownership. The ASF licenses this file
|
||||
* 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
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
package org.xerial.snappy;
|
||||
|
||||
import java.util.zip.Checksum;
|
||||
|
||||
/**
|
||||
* A pure-java implementation of the CRC32 checksum that uses
|
||||
* the CRC32-C polynomial, the same polynomial used by iSCSI
|
||||
* and implemented on many Intel chipsets supporting SSE4.2.
|
||||
*/
|
||||
public class PureJavaCrc32C implements Checksum {
|
||||
|
||||
/** 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;
|
||||
}
|
||||
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
|
||||
};
|
||||
}
|
||||
@ -26,7 +26,6 @@ package org.xerial.snappy;
|
||||
|
||||
import java.io.IOException;
|
||||
import java.io.UnsupportedEncodingException;
|
||||
import java.lang.ExceptionInInitializerError;
|
||||
import java.net.URL;
|
||||
import java.nio.ByteBuffer;
|
||||
import java.nio.charset.Charset;
|
||||
@ -35,7 +34,7 @@ import java.util.Properties;
|
||||
/**
|
||||
* Snappy API for data compression/decompression
|
||||
*
|
||||
* Note: if the native libraries cannot be loaded, then an ExceptionInInitializerError
|
||||
* Note: if the native libraries cannot be loaded, an ExceptionInInitializerError
|
||||
* will be thrown at first use of this class.
|
||||
*
|
||||
* @author leo
|
||||
@ -53,9 +52,23 @@ public class Snappy
|
||||
}
|
||||
|
||||
/**
|
||||
* An instance of SnappyNativeAPI
|
||||
* An instance of SnappyNative
|
||||
*/
|
||||
private static Object impl;
|
||||
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
|
||||
* is deleted upon JVM termination (vie deleteOnExit()).
|
||||
* This method is useful when using a J2EE container, which will restart servlet containers multiple times without
|
||||
* restarting JVM.
|
||||
*/
|
||||
static void cleanUp() {
|
||||
SnappyLoader.cleanUpExtractedNativeLib();
|
||||
SnappyLoader.setApi(null);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Copy bytes from source to destination
|
||||
@ -74,7 +87,7 @@ public class Snappy
|
||||
*/
|
||||
public static void arrayCopy(Object src, int offset, int byteLength, Object dest, int dest_offset)
|
||||
throws IOException {
|
||||
((SnappyNativeAPI) impl).arrayCopy(src, offset, byteLength, dest, dest_offset);
|
||||
impl.arrayCopy(src, offset, byteLength, dest, dest_offset);
|
||||
}
|
||||
|
||||
/**
|
||||
@ -135,7 +148,7 @@ public class Snappy
|
||||
// output: compressed
|
||||
int uPos = uncompressed.position();
|
||||
int uLen = uncompressed.remaining();
|
||||
int compressedSize = ((SnappyNativeAPI) impl).rawCompress(uncompressed, uPos, uLen, compressed,
|
||||
int compressedSize = impl.rawCompress(uncompressed, uPos, uLen, compressed,
|
||||
compressed.position());
|
||||
|
||||
// pos limit
|
||||
@ -284,7 +297,7 @@ public class Snappy
|
||||
public static boolean isValidCompressedBuffer(byte[] input, int offset, int length) throws IOException {
|
||||
if (input == null)
|
||||
throw new NullPointerException("input is null");
|
||||
return ((SnappyNativeAPI) impl).isValidCompressedBuffer(input, offset, length);
|
||||
return impl.isValidCompressedBuffer(input, offset, length);
|
||||
}
|
||||
|
||||
/**
|
||||
@ -304,10 +317,21 @@ public class Snappy
|
||||
* factor of four faster than actual decompression.
|
||||
*/
|
||||
public static boolean isValidCompressedBuffer(ByteBuffer compressed) throws IOException {
|
||||
return ((SnappyNativeAPI) impl).isValidCompressedBuffer(compressed, compressed.position(),
|
||||
return impl.isValidCompressedBuffer(compressed, compressed.position(),
|
||||
compressed.remaining());
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns true iff the contents of compressed buffer [offset,
|
||||
* offset+length) can be uncompressed successfully. Does not return the
|
||||
* 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 {
|
||||
return impl.isValidCompressedBuffer(inputAddr, offset, length);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Get the maximum byte size needed for compressing data of the given byte
|
||||
* size.
|
||||
@ -317,7 +341,7 @@ public class Snappy
|
||||
* @return maximum byte size of the compressed data
|
||||
*/
|
||||
public static int maxCompressedLength(int byteSize) {
|
||||
return ((SnappyNativeAPI) impl).maxCompressedLength(byteSize);
|
||||
return impl.maxCompressedLength(byteSize);
|
||||
}
|
||||
|
||||
/**
|
||||
@ -329,7 +353,7 @@ public class Snappy
|
||||
* @throws IOException
|
||||
*/
|
||||
public static long rawCompress(long inputAddr, long inputSize, long destAddr) throws IOException {
|
||||
return ((SnappyNativeAPI) impl).rawCompress(inputAddr, inputSize, destAddr);
|
||||
return impl.rawCompress(inputAddr, inputSize, destAddr);
|
||||
}
|
||||
|
||||
/**
|
||||
@ -341,7 +365,7 @@ public class Snappy
|
||||
* @throws IOException
|
||||
*/
|
||||
public static long rawUncompress(long inputAddr, long inputSize, long destAddr) throws IOException {
|
||||
return ((SnappyNativeAPI) impl).rawUncompress(inputAddr, inputSize, destAddr);
|
||||
return impl.rawUncompress(inputAddr, inputSize, destAddr);
|
||||
}
|
||||
|
||||
|
||||
@ -356,7 +380,7 @@ public class Snappy
|
||||
*/
|
||||
public static byte[] rawCompress(Object data, int byteSize) throws IOException {
|
||||
byte[] buf = new byte[Snappy.maxCompressedLength(byteSize)];
|
||||
int compressedByteSize = ((SnappyNativeAPI) impl).rawCompress(data, 0, byteSize, buf, 0);
|
||||
int compressedByteSize = impl.rawCompress(data, 0, byteSize, buf, 0);
|
||||
byte[] result = new byte[compressedByteSize];
|
||||
System.arraycopy(buf, 0, result, 0, compressedByteSize);
|
||||
return result;
|
||||
@ -384,7 +408,7 @@ public class Snappy
|
||||
if (input == null || output == null)
|
||||
throw new NullPointerException("input or output is null");
|
||||
|
||||
int compressedSize = ((SnappyNativeAPI) impl)
|
||||
int compressedSize = impl
|
||||
.rawCompress(input, inputOffset, inputLength, output, outputOffset);
|
||||
return compressedSize;
|
||||
}
|
||||
@ -417,7 +441,7 @@ public class Snappy
|
||||
throws IOException {
|
||||
if (input == null || output == null)
|
||||
throw new NullPointerException("input or output is null");
|
||||
return ((SnappyNativeAPI) impl).rawUncompress(input, inputOffset, inputLength, output, outputOffset);
|
||||
return impl.rawUncompress(input, inputOffset, inputLength, output, outputOffset);
|
||||
}
|
||||
|
||||
/**
|
||||
@ -489,7 +513,7 @@ public class Snappy
|
||||
|
||||
// pos limit
|
||||
// [ ......UUUUUU.........]
|
||||
int decompressedSize = ((SnappyNativeAPI) impl).rawUncompress(compressed, cPos, cLen, uncompressed,
|
||||
int decompressedSize = impl.rawUncompress(compressed, cPos, cLen, uncompressed,
|
||||
uncompressed.position());
|
||||
uncompressed.limit(uncompressed.position() + decompressedSize);
|
||||
|
||||
@ -519,7 +543,7 @@ public class Snappy
|
||||
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 = ((SnappyNativeAPI) impl).rawUncompress(input, offset, length, result, 0);
|
||||
int byteSize = impl.rawUncompress(input, offset, length, result, 0);
|
||||
return result;
|
||||
}
|
||||
|
||||
@ -533,7 +557,7 @@ public class Snappy
|
||||
public static double[] uncompressDoubleArray(byte[] input) throws IOException {
|
||||
int uncompressedLength = Snappy.uncompressedLength(input, 0, input.length);
|
||||
double[] result = new double[uncompressedLength / 8];
|
||||
int byteSize = ((SnappyNativeAPI) impl).rawUncompress(input, 0, input.length, result, 0);
|
||||
int byteSize = impl.rawUncompress(input, 0, input.length, result, 0);
|
||||
return result;
|
||||
}
|
||||
|
||||
@ -548,7 +572,7 @@ public class Snappy
|
||||
* {@link SnappyErrorCode#PARSING_ERROR}
|
||||
*/
|
||||
public static int uncompressedLength(byte[] input) throws IOException {
|
||||
return ((SnappyNativeAPI) impl).uncompressedLength(input, 0, input.length);
|
||||
return impl.uncompressedLength(input, 0, input.length);
|
||||
}
|
||||
|
||||
/**
|
||||
@ -567,7 +591,7 @@ public class Snappy
|
||||
if (input == null)
|
||||
throw new NullPointerException("input is null");
|
||||
|
||||
return ((SnappyNativeAPI) impl).uncompressedLength(input, offset, length);
|
||||
return impl.uncompressedLength(input, offset, length);
|
||||
}
|
||||
|
||||
/**
|
||||
@ -587,7 +611,7 @@ public class Snappy
|
||||
if (!compressed.isDirect())
|
||||
throw new SnappyError(SnappyErrorCode.NOT_A_DIRECT_BUFFER, "input is not a direct buffer");
|
||||
|
||||
return ((SnappyNativeAPI) impl).uncompressedLength(compressed, compressed.position(), compressed.remaining());
|
||||
return impl.uncompressedLength(compressed, compressed.position(), compressed.remaining());
|
||||
}
|
||||
|
||||
/**
|
||||
@ -599,7 +623,7 @@ public class Snappy
|
||||
* {@link SnappyErrorCode#PARSING_ERROR}
|
||||
*/
|
||||
public static long uncompressedLength(long inputAddr, long len) throws IOException {
|
||||
return ((SnappyNativeAPI) impl).uncompressedLength(inputAddr, len);
|
||||
return impl.uncompressedLength(inputAddr, len);
|
||||
}
|
||||
|
||||
/**
|
||||
@ -625,7 +649,7 @@ public class Snappy
|
||||
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 = ((SnappyNativeAPI) impl).rawUncompress(input, offset, length, result, 0);
|
||||
int byteSize = impl.rawUncompress(input, offset, length, result, 0);
|
||||
return result;
|
||||
}
|
||||
|
||||
@ -652,7 +676,7 @@ public class Snappy
|
||||
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 = ((SnappyNativeAPI) impl).rawUncompress(input, offset, length, result, 0);
|
||||
int byteSize = impl.rawUncompress(input, offset, length, result, 0);
|
||||
return result;
|
||||
}
|
||||
|
||||
@ -679,7 +703,7 @@ public class Snappy
|
||||
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 = ((SnappyNativeAPI) impl).rawUncompress(input, offset, length, result, 0);
|
||||
int byteSize = impl.rawUncompress(input, offset, length, result, 0);
|
||||
return result;
|
||||
}
|
||||
|
||||
@ -706,7 +730,7 @@ public class Snappy
|
||||
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 = ((SnappyNativeAPI) impl).rawUncompress(input, offset, length, result, 0);
|
||||
int byteSize = impl.rawUncompress(input, offset, length, result, 0);
|
||||
return result;
|
||||
}
|
||||
|
||||
|
||||
@ -24,12 +24,12 @@
|
||||
//--------------------------------------
|
||||
package org.xerial.snappy;
|
||||
|
||||
import java.util.jar.Manifest;
|
||||
|
||||
import org.osgi.framework.Bundle;
|
||||
import org.osgi.framework.BundleActivator;
|
||||
import org.osgi.framework.BundleContext;
|
||||
|
||||
import java.util.jar.Manifest;
|
||||
|
||||
/**
|
||||
* OSGi bundle entry point
|
||||
*
|
||||
@ -56,5 +56,6 @@ public class SnappyBundleActivator implements BundleActivator
|
||||
public void stop(BundleContext context) throws Exception
|
||||
{
|
||||
SnappyLoader.setApi(null);
|
||||
Snappy.cleanUp();
|
||||
}
|
||||
}
|
||||
|
||||
@ -91,7 +91,7 @@ public class SnappyCodec
|
||||
public static SnappyCodec readHeader(InputStream in) throws IOException {
|
||||
DataInputStream d = new DataInputStream(in);
|
||||
byte[] magic = new byte[MAGIC_LEN];
|
||||
d.read(magic, 0, MAGIC_LEN);
|
||||
d.readFully(magic, 0, MAGIC_LEN);
|
||||
int version = d.readInt();
|
||||
int compatibleVersion = d.readInt();
|
||||
return new SnappyCodec(magic, version, compatibleVersion);
|
||||
|
||||
128
src/main/java/org/xerial/snappy/SnappyFramed.java
Normal file
128
src/main/java/org/xerial/snappy/SnappyFramed.java
Normal file
@ -0,0 +1,128 @@
|
||||
/*
|
||||
* Created: Apr 12, 2013
|
||||
*/
|
||||
package org.xerial.snappy;
|
||||
|
||||
import java.io.IOException;
|
||||
import java.nio.ByteBuffer;
|
||||
import java.nio.channels.ReadableByteChannel;
|
||||
|
||||
/**
|
||||
* Constants and utilities for implementing x-snappy-framed.
|
||||
*
|
||||
* @author Brett Okken
|
||||
* @since 1.1.0
|
||||
*/
|
||||
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;
|
||||
|
||||
/**
|
||||
* The header consists of the stream identifier flag, 3 bytes indicating a
|
||||
* length of 6, and "sNaPpY" in ASCII.
|
||||
*/
|
||||
public static final byte[] HEADER_BYTES = new byte[] {
|
||||
(byte) STREAM_IDENTIFIER_FLAG, 0x06, 0x00, 0x00, 0x73, 0x4e, 0x61,
|
||||
0x50, 0x70, 0x59 };
|
||||
|
||||
public static int maskedCrc32c(byte[] data)
|
||||
{
|
||||
return maskedCrc32c(data, 0, data.length);
|
||||
}
|
||||
|
||||
public static int maskedCrc32c(byte[] data, int offset, int length)
|
||||
{
|
||||
final PureJavaCrc32C crc32c = new PureJavaCrc32C();
|
||||
crc32c.update(data, offset, length);
|
||||
return mask(crc32c.getIntegerValue());
|
||||
}
|
||||
|
||||
/**
|
||||
* Checksums are not stored directly, but masked, as checksumming data and
|
||||
* then its own checksum can be problematic. The masking is the same as used
|
||||
* 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:
|
||||
*
|
||||
* <pre>
|
||||
* uint32_t mask_checksum(uint32_t x) {
|
||||
* return ((x >> 15) | (x << 17)) + 0xa282ead8;
|
||||
* }
|
||||
* </pre>
|
||||
*/
|
||||
public static int mask(int crc)
|
||||
{
|
||||
// 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
|
||||
{
|
||||
// tells how many bytes to read.
|
||||
final int expectedLength = dest.remaining();
|
||||
|
||||
int totalRead = 0;
|
||||
|
||||
// how many bytes were read.
|
||||
int lastRead = source.read(dest);
|
||||
|
||||
totalRead = lastRead;
|
||||
|
||||
// if we did not read as many bytes as we had hoped, try reading again.
|
||||
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)
|
||||
{
|
||||
lastRead = source.read(dest);
|
||||
|
||||
// if we got EOF, do not add to total read.
|
||||
if (lastRead != -1)
|
||||
{
|
||||
totalRead += lastRead;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (totalRead > 0)
|
||||
{
|
||||
dest.limit(dest.position());
|
||||
}
|
||||
else
|
||||
{
|
||||
dest.position(dest.limit());
|
||||
}
|
||||
|
||||
return totalRead;
|
||||
}
|
||||
|
||||
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) {
|
||||
buffer.clear();
|
||||
if (toSkip < buffer.capacity()) {
|
||||
buffer.limit(toSkip);
|
||||
}
|
||||
|
||||
skipped = source.read(buffer);
|
||||
if (skipped > 0) {
|
||||
toSkip -= skipped;
|
||||
}
|
||||
}
|
||||
|
||||
buffer.clear();
|
||||
return skip - toSkip;
|
||||
}
|
||||
}
|
||||
452
src/main/java/org/xerial/snappy/SnappyFramedInputStream.java
Normal file
452
src/main/java/org/xerial/snappy/SnappyFramedInputStream.java
Normal file
@ -0,0 +1,452 @@
|
||||
/*
|
||||
* Created: Apr 15, 2013
|
||||
*/
|
||||
package org.xerial.snappy;
|
||||
|
||||
import static java.lang.Math.min;
|
||||
import static org.xerial.snappy.SnappyFramed.*;
|
||||
import static org.xerial.snappy.SnappyFramedOutputStream.*;
|
||||
|
||||
import java.io.EOFException;
|
||||
import java.io.IOException;
|
||||
import java.io.InputStream;
|
||||
import java.nio.ByteBuffer;
|
||||
import java.nio.channels.Channels;
|
||||
import java.nio.channels.ClosedChannelException;
|
||||
import java.nio.channels.ReadableByteChannel;
|
||||
import java.util.Arrays;
|
||||
|
||||
/**
|
||||
* Implements the <a
|
||||
* href="http://snappy.googlecode.com/svn/trunk/framing_format.txt"
|
||||
* >x-snappy-framed</a> as an {@link InputStream} and
|
||||
* {@link ReadableByteChannel}.
|
||||
*
|
||||
* @author Brett Okken
|
||||
* @since 1.1.0
|
||||
*/
|
||||
public final class SnappyFramedInputStream extends InputStream implements
|
||||
ReadableByteChannel {
|
||||
|
||||
private final ReadableByteChannel rbc;
|
||||
private final ByteBuffer frameHeader;
|
||||
private final boolean verifyChecksums;
|
||||
|
||||
/**
|
||||
* A single frame read from the underlying {@link InputStream}.
|
||||
*/
|
||||
private ByteBuffer input;
|
||||
|
||||
/**
|
||||
* The decompressed data from {@link #input}.
|
||||
*/
|
||||
private ByteBuffer uncompressedDirect;
|
||||
|
||||
/**
|
||||
* Indicates if this instance has been closed.
|
||||
*/
|
||||
private boolean closed;
|
||||
|
||||
/**
|
||||
* Indicates if we have reached the EOF on {@link #in}.
|
||||
*/
|
||||
private boolean eof;
|
||||
|
||||
/**
|
||||
* The position in {@link buffer} to read to.
|
||||
*/
|
||||
private int valid;
|
||||
|
||||
/**
|
||||
* The next position to read from {@link #buffer}.
|
||||
*/
|
||||
private int position;
|
||||
|
||||
/**
|
||||
* Buffer contains a copy of the uncompressed data for the block.
|
||||
*/
|
||||
private byte[] buffer;
|
||||
|
||||
/**
|
||||
* 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}.
|
||||
*/
|
||||
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
|
||||
*/
|
||||
public SnappyFramedInputStream(InputStream in, boolean verifyChecksums)
|
||||
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}.
|
||||
*/
|
||||
public SnappyFramedInputStream(ReadableByteChannel in)
|
||||
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
|
||||
*/
|
||||
public SnappyFramedInputStream(ReadableByteChannel in,
|
||||
boolean verifyChecksums) throws IOException {
|
||||
if (in == null) {
|
||||
throw new NullPointerException("in is null");
|
||||
}
|
||||
|
||||
this.rbc = in;
|
||||
this.verifyChecksums = verifyChecksums;
|
||||
|
||||
allocateBuffersBasedOnSize(MAX_BLOCK_SIZE + 5);
|
||||
this.frameHeader = ByteBuffer.allocate(4);
|
||||
|
||||
// stream must begin with stream header
|
||||
final byte[] expectedHeader = HEADER_BYTES;
|
||||
final byte[] actualHeader = new byte[expectedHeader.length];
|
||||
final ByteBuffer actualBuffer = ByteBuffer.wrap(actualHeader);
|
||||
|
||||
// assume that if the input cannot read 4 bytes that something is
|
||||
// wrong.
|
||||
final int read = in.read(actualBuffer);
|
||||
if (read < expectedHeader.length) {
|
||||
throw new EOFException(
|
||||
"encountered EOF while reading stream header");
|
||||
}
|
||||
if (!Arrays.equals(expectedHeader, actualHeader)) {
|
||||
throw new IOException("invalid stream header");
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* @param size
|
||||
*/
|
||||
private void allocateBuffersBasedOnSize(int size) {
|
||||
|
||||
input = ByteBuffer.allocateDirect(size);
|
||||
final int maxCompressedLength = Snappy.maxCompressedLength(size);
|
||||
uncompressedDirect = ByteBuffer.allocateDirect(maxCompressedLength);
|
||||
buffer = new byte[maxCompressedLength];
|
||||
}
|
||||
|
||||
@Override
|
||||
public int read() throws IOException {
|
||||
if (closed) {
|
||||
return -1;
|
||||
}
|
||||
if (!ensureBuffer()) {
|
||||
return -1;
|
||||
}
|
||||
return buffer[position++] & 0xFF;
|
||||
}
|
||||
|
||||
@Override
|
||||
public int read(byte[] output, int offset, int length) throws IOException {
|
||||
|
||||
if (output == null) {
|
||||
throw new IllegalArgumentException("output is null");
|
||||
}
|
||||
|
||||
if (offset < 0 || length < 0 || offset + length > output.length) {
|
||||
throw new IllegalArgumentException("invalid offset [" + offset
|
||||
+ "] and length [" + length + ']');
|
||||
}
|
||||
|
||||
if (closed) {
|
||||
throw new ClosedChannelException();
|
||||
}
|
||||
|
||||
if (length == 0) {
|
||||
return 0;
|
||||
}
|
||||
if (!ensureBuffer()) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
final int size = min(length, available());
|
||||
System.arraycopy(buffer, position, output, offset, size);
|
||||
position += size;
|
||||
return size;
|
||||
}
|
||||
|
||||
@Override
|
||||
public int available() throws IOException {
|
||||
if (closed) {
|
||||
return 0;
|
||||
}
|
||||
return valid - position;
|
||||
}
|
||||
|
||||
/**
|
||||
* {@inheritDoc}
|
||||
*/
|
||||
@Override
|
||||
public boolean isOpen() {
|
||||
return !closed;
|
||||
}
|
||||
|
||||
/**
|
||||
* {@inheritDoc}
|
||||
*/
|
||||
@Override
|
||||
public int read(ByteBuffer dst) throws IOException {
|
||||
|
||||
if (dst == null) {
|
||||
throw new IllegalArgumentException("dst is null");
|
||||
}
|
||||
|
||||
if (closed) {
|
||||
throw new ClosedChannelException();
|
||||
}
|
||||
|
||||
if (dst.remaining() == 0) {
|
||||
return 0;
|
||||
}
|
||||
if (!ensureBuffer()) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
final int size = min(dst.remaining(), available());
|
||||
dst.put(buffer, position, size);
|
||||
position += size;
|
||||
return size;
|
||||
}
|
||||
|
||||
@Override
|
||||
public void close() throws IOException {
|
||||
try {
|
||||
rbc.close();
|
||||
} finally {
|
||||
if (!closed) {
|
||||
closed = true;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static enum FrameAction {
|
||||
RAW, SKIP, UNCOMPRESS;
|
||||
}
|
||||
|
||||
public static final class FrameMetaData {
|
||||
final int length;
|
||||
final FrameAction frameAction;
|
||||
|
||||
/**
|
||||
* @param frameAction
|
||||
* @param length
|
||||
*/
|
||||
public FrameMetaData(FrameAction frameAction, int length) {
|
||||
super();
|
||||
this.frameAction = frameAction;
|
||||
this.length = length;
|
||||
}
|
||||
}
|
||||
|
||||
public static final class FrameData {
|
||||
final int checkSum;
|
||||
final int offset;
|
||||
|
||||
/**
|
||||
* @param checkSum
|
||||
* @param offset
|
||||
*/
|
||||
public FrameData(int checkSum, int offset) {
|
||||
super();
|
||||
this.checkSum = checkSum;
|
||||
this.offset = offset;
|
||||
}
|
||||
}
|
||||
|
||||
private boolean ensureBuffer() throws IOException {
|
||||
if (available() > 0) {
|
||||
return true;
|
||||
}
|
||||
if (eof) {
|
||||
return false;
|
||||
}
|
||||
|
||||
if (!readBlockHeader()) {
|
||||
eof = true;
|
||||
return false;
|
||||
}
|
||||
|
||||
// get action based on header
|
||||
final FrameMetaData frameMetaData = getFrameMetaData(frameHeader);
|
||||
|
||||
if (FrameAction.SKIP == frameMetaData.frameAction) {
|
||||
SnappyFramed.skip(rbc, frameMetaData.length,
|
||||
ByteBuffer.wrap(buffer));
|
||||
return ensureBuffer();
|
||||
}
|
||||
|
||||
if (frameMetaData.length > input.capacity()) {
|
||||
allocateBuffersBasedOnSize(frameMetaData.length);
|
||||
}
|
||||
|
||||
input.clear();
|
||||
input.limit(frameMetaData.length);
|
||||
|
||||
final int actualRead = readBytes(rbc, input);
|
||||
if (actualRead != frameMetaData.length) {
|
||||
throw new EOFException("unexpectd EOF when reading frame");
|
||||
}
|
||||
input.flip();
|
||||
|
||||
final FrameData frameData = getFrameData(input);
|
||||
|
||||
if (FrameAction.UNCOMPRESS == frameMetaData.frameAction) {
|
||||
|
||||
input.position(frameData.offset);
|
||||
|
||||
final int uncompressedLength = Snappy.uncompressedLength(input);
|
||||
|
||||
if (uncompressedLength > uncompressedDirect.capacity()) {
|
||||
uncompressedDirect = ByteBuffer
|
||||
.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 {
|
||||
// we need to start reading at the offset
|
||||
input.position(frameData.offset);
|
||||
this.position = 0;
|
||||
this.valid = input.remaining();
|
||||
this.input.get(buffer, 0, input.remaining());
|
||||
}
|
||||
|
||||
if (verifyChecksums) {
|
||||
final int actualCrc32c = SnappyFramed.maskedCrc32c(buffer,
|
||||
position, valid - position);
|
||||
if (frameData.checkSum != actualCrc32c) {
|
||||
throw new IOException("Corrupt input: invalid checksum");
|
||||
}
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
private boolean readBlockHeader() throws IOException {
|
||||
frameHeader.clear();
|
||||
int read = readBytes(rbc, frameHeader);
|
||||
|
||||
if (read == -1) {
|
||||
return false;
|
||||
}
|
||||
|
||||
if (read < frameHeader.capacity()) {
|
||||
throw new EOFException("encountered EOF while reading block header");
|
||||
}
|
||||
frameHeader.flip();
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
*
|
||||
* @param frameHeader
|
||||
* @return
|
||||
* @throws IOException
|
||||
*/
|
||||
private FrameMetaData getFrameMetaData(ByteBuffer frameHeader)
|
||||
throws IOException {
|
||||
|
||||
assert frameHeader.hasArray();
|
||||
|
||||
final byte[] frameHeaderArray = frameHeader.array();
|
||||
|
||||
int length = (frameHeaderArray[1] & 0xFF);
|
||||
length |= (frameHeaderArray[2] & 0xFF) << 8;
|
||||
length |= (frameHeaderArray[3] & 0xFF) << 16;
|
||||
|
||||
int minLength = 0;
|
||||
final FrameAction frameAction;
|
||||
final int flag = frameHeaderArray[0] & 0xFF;
|
||||
switch (flag) {
|
||||
case COMPRESSED_DATA_FLAG:
|
||||
frameAction = FrameAction.UNCOMPRESS;
|
||||
minLength = 5;
|
||||
break;
|
||||
case UNCOMPRESSED_DATA_FLAG:
|
||||
frameAction = FrameAction.RAW;
|
||||
minLength = 5;
|
||||
break;
|
||||
case STREAM_IDENTIFIER_FLAG:
|
||||
if (length != 6) {
|
||||
throw new IOException(
|
||||
"stream identifier chunk with invalid length: "
|
||||
+ length);
|
||||
}
|
||||
frameAction = FrameAction.SKIP;
|
||||
minLength = 6;
|
||||
break;
|
||||
default:
|
||||
// Reserved unskippable chunks (chunk types 0x02-0x7f)
|
||||
if (flag <= 0x7f) {
|
||||
throw new IOException("unsupported unskippable chunk: "
|
||||
+ Integer.toHexString(flag));
|
||||
}
|
||||
|
||||
// all that is left is Reserved skippable chunks (chunk types
|
||||
// 0x80-0xfe)
|
||||
frameAction = FrameAction.SKIP;
|
||||
minLength = 0;
|
||||
}
|
||||
|
||||
if (length < minLength) {
|
||||
throw new IOException("invalid length: " + length
|
||||
+ " for chunk flag: " + Integer.toHexString(flag));
|
||||
}
|
||||
|
||||
return new FrameMetaData(frameAction, length);
|
||||
}
|
||||
|
||||
/**
|
||||
*
|
||||
* @param content
|
||||
* @return
|
||||
* @throws IOException
|
||||
*/
|
||||
private FrameData getFrameData(ByteBuffer content) throws IOException {
|
||||
return new FrameData(getCrc32c(content), 4);
|
||||
}
|
||||
|
||||
private int getCrc32c(ByteBuffer content) {
|
||||
|
||||
final int position = content.position();
|
||||
|
||||
return ((content.get(position + 3) & 0xFF) << 24)
|
||||
| ((content.get(position + 2) & 0xFF) << 16)
|
||||
| ((content.get(position + 1) & 0xFF) << 8)
|
||||
| (content.get(position) & 0xFF);
|
||||
}
|
||||
}
|
||||
317
src/main/java/org/xerial/snappy/SnappyFramedOutputStream.java
Normal file
317
src/main/java/org/xerial/snappy/SnappyFramedOutputStream.java
Normal file
@ -0,0 +1,317 @@
|
||||
/*
|
||||
* Created: Apr 12, 2013
|
||||
*/
|
||||
package org.xerial.snappy;
|
||||
|
||||
import static org.xerial.snappy.SnappyFramed.COMPRESSED_DATA_FLAG;
|
||||
import static org.xerial.snappy.SnappyFramed.HEADER_BYTES;
|
||||
import static org.xerial.snappy.SnappyFramed.UNCOMPRESSED_DATA_FLAG;
|
||||
import static org.xerial.snappy.SnappyFramed.maskedCrc32c;
|
||||
|
||||
import java.io.IOException;
|
||||
import java.io.OutputStream;
|
||||
import java.nio.ByteBuffer;
|
||||
import java.nio.channels.ClosedChannelException;
|
||||
import java.nio.channels.WritableByteChannel;
|
||||
|
||||
/**
|
||||
* Implements the <a
|
||||
* href="http://snappy.googlecode.com/svn/trunk/framing_format.txt"
|
||||
* >x-snappy-framed</a> as an {@link OutputStream} and
|
||||
* {@link WritableByteChannel}.
|
||||
*
|
||||
* @author Brett Okken
|
||||
* @since 1.1.0
|
||||
*/
|
||||
public final class SnappyFramedOutputStream extends OutputStream implements
|
||||
WritableByteChannel {
|
||||
|
||||
/**
|
||||
* The x-snappy-framed specification allows for a chunk size up to
|
||||
* 16,777,211 bytes in length. However, it also goes on to state:
|
||||
* <p>
|
||||
* <code>
|
||||
* 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
|
||||
* small fixed-size buffers.
|
||||
* </code>
|
||||
* </p>
|
||||
*/
|
||||
public static final int MAX_BLOCK_SIZE = 64 * 1024;
|
||||
|
||||
/**
|
||||
* The default block size to use.
|
||||
*/
|
||||
public static final int DEFAULT_BLOCK_SIZE = MAX_BLOCK_SIZE;
|
||||
|
||||
/**
|
||||
* The default min compression ratio to use.
|
||||
*/
|
||||
public static final double DEFAULT_MIN_COMPRESSION_RATIO = 0.85d;
|
||||
|
||||
// private final int blockSize;
|
||||
private final ByteBuffer buffer;
|
||||
private final byte[] outputBuffer;
|
||||
private final double minCompressionRatio;
|
||||
|
||||
private final OutputStream out;
|
||||
|
||||
// private int position;
|
||||
private boolean closed;
|
||||
|
||||
/**
|
||||
* 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}.
|
||||
* @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 <i>out</i>. 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 {
|
||||
if (out == null) {
|
||||
throw new NullPointerException();
|
||||
}
|
||||
|
||||
if (minCompressionRatio <= 0 || minCompressionRatio > 1.0) {
|
||||
throw new IllegalArgumentException("minCompressionRatio "
|
||||
+ minCompressionRatio + " must be in (0,1.0]");
|
||||
}
|
||||
|
||||
if (blockSize <= 0 || blockSize > MAX_BLOCK_SIZE) {
|
||||
throw new IllegalArgumentException("block size " + blockSize
|
||||
+ " must be in (0, 65536]");
|
||||
}
|
||||
|
||||
this.out = out;
|
||||
this.minCompressionRatio = minCompressionRatio;
|
||||
buffer = ByteBuffer.allocate(blockSize);
|
||||
outputBuffer = new byte[Snappy.maxCompressedLength(blockSize)];
|
||||
|
||||
writeHeader(out);
|
||||
}
|
||||
|
||||
/**
|
||||
* Writes the implementation specific header or "marker bytes" to
|
||||
* <i>out</i>.
|
||||
*
|
||||
* @param out
|
||||
* The underlying {@link OutputStream}.
|
||||
* @throws IOException
|
||||
*/
|
||||
private void writeHeader(OutputStream out) throws IOException {
|
||||
out.write(HEADER_BYTES);
|
||||
}
|
||||
|
||||
/**
|
||||
* {@inheritDoc}
|
||||
*/
|
||||
@Override
|
||||
public boolean isOpen() {
|
||||
return !closed;
|
||||
}
|
||||
|
||||
@Override
|
||||
public void write(int b) throws IOException {
|
||||
if (closed) {
|
||||
throw new IOException("Stream is closed");
|
||||
}
|
||||
if (buffer.remaining() <= 0) {
|
||||
flushBuffer();
|
||||
}
|
||||
buffer.put((byte) b);
|
||||
}
|
||||
|
||||
@Override
|
||||
public void write(byte[] input, int offset, int length) throws IOException {
|
||||
if (closed) {
|
||||
throw new IOException("Stream is closed");
|
||||
}
|
||||
|
||||
write(ByteBuffer.wrap(input, offset, length));
|
||||
}
|
||||
|
||||
/**
|
||||
* {@inheritDoc}
|
||||
*/
|
||||
@Override
|
||||
public int write(ByteBuffer src) throws IOException {
|
||||
if (closed) {
|
||||
throw new ClosedChannelException();
|
||||
}
|
||||
|
||||
if (buffer.remaining() <= 0) {
|
||||
flushBuffer();
|
||||
}
|
||||
|
||||
final int srcLength = src.remaining();
|
||||
|
||||
// easy case: enough free space in buffer for entire input
|
||||
if (buffer.remaining() >= src.remaining()) {
|
||||
buffer.put(src);
|
||||
return srcLength;
|
||||
}
|
||||
|
||||
// store current limit
|
||||
final int srcEnd = src.position() + src.remaining();
|
||||
|
||||
while ((src.position() + buffer.remaining()) <= srcEnd) {
|
||||
// fill partial buffer as much as possible and flush
|
||||
src.limit(src.position() + buffer.remaining());
|
||||
buffer.put(src);
|
||||
flushBuffer();
|
||||
}
|
||||
|
||||
// reset original limit
|
||||
src.limit(srcEnd);
|
||||
|
||||
// copy remaining partial block into now-empty buffer
|
||||
buffer.put(src);
|
||||
|
||||
return srcLength;
|
||||
}
|
||||
|
||||
@Override
|
||||
public final void flush() throws IOException {
|
||||
if (closed) {
|
||||
throw new IOException("Stream is closed");
|
||||
}
|
||||
flushBuffer();
|
||||
out.flush();
|
||||
}
|
||||
|
||||
@Override
|
||||
public final void close() throws IOException {
|
||||
if (closed) {
|
||||
return;
|
||||
}
|
||||
try {
|
||||
flush();
|
||||
out.close();
|
||||
} finally {
|
||||
closed = true;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Compresses and writes out any buffered data. This does nothing if there
|
||||
* is no currently buffered data.
|
||||
*
|
||||
* @throws IOException
|
||||
*/
|
||||
private void flushBuffer() throws IOException {
|
||||
if (buffer.position() > 0) {
|
||||
buffer.flip();
|
||||
writeCompressed(buffer);
|
||||
buffer.clear();
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* {@link #calculateCRC32C(byte[], int, int) Calculates} the crc, compresses
|
||||
* the data, determines if the compression ratio is acceptable and calls
|
||||
* {@link #writeBlock(OutputStream, byte[], int, int, boolean, int)} to
|
||||
* actually write the frame.
|
||||
*
|
||||
* @param input
|
||||
* The byte[] containing the raw data to be compressed.
|
||||
* @param offset
|
||||
* The offset into <i>input</i> where the data starts.
|
||||
* @param length
|
||||
* The amount of data in <i>input</i>.
|
||||
* @throws IOException
|
||||
*/
|
||||
private void writeCompressed(ByteBuffer buffer) throws IOException {
|
||||
|
||||
final byte[] input = buffer.array();
|
||||
final int length = buffer.remaining();
|
||||
|
||||
// crc is based on the user supplied input data
|
||||
final int crc32c = calculateCRC32C(input, 0, length);
|
||||
|
||||
final int compressedLength = Snappy.compress(input, 0, length,
|
||||
outputBuffer, 0);
|
||||
|
||||
// only use the compressed data if copmression ratio is <= the
|
||||
// minCompressonRatio
|
||||
if (((double) compressedLength / (double) length) <= minCompressionRatio) {
|
||||
writeBlock(out, outputBuffer, 0, compressedLength, true, crc32c);
|
||||
} else {
|
||||
// otherwise use the uncomprssed data.
|
||||
writeBlock(out, input, 0, length, false, crc32c);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Calculates a masked CRC32C checksum over the data.
|
||||
*
|
||||
* @param data
|
||||
* @param offset
|
||||
* @param length
|
||||
* @return The CRC32 checksum.
|
||||
*/
|
||||
private int calculateCRC32C(byte[] data, int offset, int length) {
|
||||
return maskedCrc32c(data, offset, length);
|
||||
}
|
||||
|
||||
/**
|
||||
* Write a frame (block) to <i>out</i>.
|
||||
*
|
||||
* @param out
|
||||
* The {@link OutputStream} to write to.
|
||||
* @param data
|
||||
* The data to write.
|
||||
* @param offset
|
||||
* The offset in <i>data</i> to start at.
|
||||
* @param length
|
||||
* The length of <i>data</i> to use.
|
||||
* @param compressed
|
||||
* Indicates if <i>data</i> 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 OutputStream out, byte[] data, int offset,
|
||||
int length, boolean compressed, int crc32c) throws IOException {
|
||||
out.write(compressed ? COMPRESSED_DATA_FLAG : UNCOMPRESSED_DATA_FLAG);
|
||||
|
||||
// the length written out to the header is both the checksum and the
|
||||
// frame
|
||||
final int headerLength = length + 4;
|
||||
|
||||
// write length
|
||||
out.write(headerLength);
|
||||
out.write(headerLength >>> 8);
|
||||
out.write(headerLength >>> 16);
|
||||
|
||||
// write crc32c of user input data
|
||||
out.write(crc32c);
|
||||
out.write(crc32c >>> 8);
|
||||
out.write(crc32c >>> 16);
|
||||
out.write(crc32c >>> 24);
|
||||
|
||||
// write data
|
||||
out.write(data, offset, length);
|
||||
}
|
||||
}
|
||||
@ -24,24 +24,11 @@
|
||||
//--------------------------------------
|
||||
package org.xerial.snappy;
|
||||
|
||||
import java.io.BufferedInputStream;
|
||||
import java.io.ByteArrayOutputStream;
|
||||
import java.io.File;
|
||||
import java.io.FileInputStream;
|
||||
import java.io.FileOutputStream;
|
||||
import java.io.IOException;
|
||||
import java.io.InputStream;
|
||||
import java.lang.reflect.InvocationTargetException;
|
||||
import java.lang.reflect.Method;
|
||||
import java.io.*;
|
||||
import java.net.URL;
|
||||
import java.security.DigestInputStream;
|
||||
import java.security.MessageDigest;
|
||||
import java.security.NoSuchAlgorithmException;
|
||||
import java.security.ProtectionDomain;
|
||||
import java.util.ArrayList;
|
||||
import java.util.Enumeration;
|
||||
import java.util.List;
|
||||
import java.util.Properties;
|
||||
import java.util.UUID;
|
||||
|
||||
/**
|
||||
* <b>Internal only - Do not use this class.</b> This class loads a native
|
||||
@ -94,14 +81,21 @@ public class SnappyLoader
|
||||
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 Object api = null;
|
||||
|
||||
private static volatile SnappyNative api = null;
|
||||
|
||||
private static File nativeLibFile = null;
|
||||
|
||||
static void cleanUpExtractedNativeLib() {
|
||||
if(nativeLibFile != null && nativeLibFile.exists())
|
||||
nativeLibFile.delete();
|
||||
}
|
||||
|
||||
/**
|
||||
* Set the api instance.
|
||||
*
|
||||
* @param nativeCode
|
||||
*/
|
||||
static synchronized void setApi(Object nativeCode)
|
||||
static synchronized void setApi(SnappyNative nativeCode)
|
||||
{
|
||||
api = nativeCode;
|
||||
}
|
||||
@ -142,97 +136,16 @@ public class SnappyLoader
|
||||
loadSnappySystemProperties();
|
||||
}
|
||||
|
||||
private static ClassLoader getRootClassLoader() {
|
||||
ClassLoader cl = Thread.currentThread().getContextClassLoader();
|
||||
while (cl.getParent() != null) {
|
||||
cl = cl.getParent();
|
||||
}
|
||||
return cl;
|
||||
}
|
||||
|
||||
private static byte[] getByteCode(String resourcePath) throws IOException {
|
||||
|
||||
InputStream in = SnappyLoader.class.getResourceAsStream(resourcePath);
|
||||
if (in == null)
|
||||
throw new IOException(resourcePath + " is not found");
|
||||
byte[] buf = new byte[1024];
|
||||
ByteArrayOutputStream byteCodeBuf = new ByteArrayOutputStream();
|
||||
for (int readLength; (readLength = in.read(buf)) != -1;) {
|
||||
byteCodeBuf.write(buf, 0, readLength);
|
||||
}
|
||||
in.close();
|
||||
|
||||
return byteCodeBuf.toByteArray();
|
||||
}
|
||||
|
||||
public static boolean isNativeLibraryLoaded() {
|
||||
return isLoaded;
|
||||
}
|
||||
|
||||
private static boolean hasInjectedNativeLoader() {
|
||||
try {
|
||||
final String nativeLoaderClassName = "org.xerial.snappy.SnappyNativeLoader";
|
||||
Class< ? > c = Class.forName(nativeLoaderClassName);
|
||||
// If this native loader class is already defined, it means that another class loader already loaded the native library of snappy
|
||||
return true;
|
||||
}
|
||||
catch (ClassNotFoundException e) {
|
||||
// do loading
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Load SnappyNative and its JNI native implementation using the root class
|
||||
* loader. This hack is for avoiding the JNI multi-loading issue when the
|
||||
* same JNI library is loaded by different class loaders.
|
||||
*
|
||||
* In order to load native code in the root class loader, this method first
|
||||
* inject SnappyNativeLoader class into the root class loader, because
|
||||
* {@link System#load(String)} method uses the class loader of the caller
|
||||
* class when loading native libraries.
|
||||
*
|
||||
* <pre>
|
||||
* (root class loader) -> [SnappyNativeLoader (load JNI code), SnappyNative (has native methods), SnappyNativeAPI, SnappyErrorCode] (injected by this method)
|
||||
* |
|
||||
* |
|
||||
* (child class loader) -> Sees the above classes loaded by the root class loader.
|
||||
* Then creates SnappyNativeAPI implementation by instantiating SnappyNaitive class.
|
||||
* </pre>
|
||||
*
|
||||
*
|
||||
* <pre>
|
||||
* (root class loader) -> [SnappyNativeLoader, SnappyNative ...] -> native code is loaded by once in this class loader
|
||||
* | \
|
||||
* | (child2 class loader)
|
||||
* (child1 class loader)
|
||||
*
|
||||
* child1 and child2 share the same SnappyNative code loaded by the root class loader.
|
||||
* </pre>
|
||||
*
|
||||
* Note that Java's class loader first delegates the class lookup to its
|
||||
* parent class loader. So once SnappyNativeLoader is loaded by the root
|
||||
* class loader, no child class loader initialize SnappyNativeLoader again.
|
||||
*
|
||||
* @return
|
||||
*/
|
||||
static synchronized Object load()
|
||||
static synchronized SnappyNative load()
|
||||
{
|
||||
if (api != null)
|
||||
return api;
|
||||
|
||||
try {
|
||||
if (!hasInjectedNativeLoader()) {
|
||||
// Inject SnappyNativeLoader (src/main/resources/org/xerial/snappy/SnappyNativeLoader.bytecode) to the root class loader
|
||||
Class< ? > nativeLoader = injectSnappyNativeLoader();
|
||||
// Load the JNI code using the injected loader
|
||||
loadNativeLibrary(nativeLoader);
|
||||
}
|
||||
loadNativeLibrary();
|
||||
|
||||
setApi(new SnappyNative());
|
||||
isLoaded = true;
|
||||
// Look up SnappyNative, injected to the root classloder, using reflection in order to avoid the initialization of SnappyNative class in this context class loader.
|
||||
Object nativeCode = Class.forName("org.xerial.snappy.SnappyNative").newInstance();
|
||||
setApi(nativeCode);
|
||||
}
|
||||
catch (Exception e) {
|
||||
e.printStackTrace();
|
||||
@ -243,119 +156,40 @@ public class SnappyLoader
|
||||
}
|
||||
|
||||
/**
|
||||
* Inject SnappyNativeLoader class to the root class loader
|
||||
*
|
||||
* @return native code loader class initialized in the root class loader
|
||||
* Load a native library of snappy-java
|
||||
*/
|
||||
private static Class< ? > injectSnappyNativeLoader() {
|
||||
private static void loadNativeLibrary() {
|
||||
|
||||
try {
|
||||
// Use parent class loader to load SnappyNative, since Tomcat, which uses different class loaders for each webapps, cannot load JNI interface twice
|
||||
|
||||
final String nativeLoaderClassName = "org.xerial.snappy.SnappyNativeLoader";
|
||||
ClassLoader rootClassLoader = getRootClassLoader();
|
||||
// Load a byte code
|
||||
byte[] byteCode = getByteCode("/org/xerial/snappy/SnappyNativeLoader.bytecode");
|
||||
// In addition, we need to load the other dependent classes (e.g., SnappyNative and SnappyException) using the system class loader
|
||||
final String[] classesToPreload = new String[] { "org.xerial.snappy.SnappyNativeAPI",
|
||||
"org.xerial.snappy.SnappyNative", "org.xerial.snappy.SnappyErrorCode" };
|
||||
List<byte[]> preloadClassByteCode = new ArrayList<byte[]>(classesToPreload.length);
|
||||
for (String each : classesToPreload) {
|
||||
preloadClassByteCode.add(getByteCode(String.format("/%s.class", each.replaceAll("\\.", "/"))));
|
||||
}
|
||||
|
||||
// Create SnappyNativeLoader class from a byte code
|
||||
Class< ? > classLoader = Class.forName("java.lang.ClassLoader");
|
||||
Method defineClass = classLoader.getDeclaredMethod("defineClass", new Class[] { String.class, byte[].class,
|
||||
int.class, int.class, ProtectionDomain.class });
|
||||
|
||||
ProtectionDomain pd = System.class.getProtectionDomain();
|
||||
|
||||
// ClassLoader.defineClass is a protected method, so we have to make it accessible
|
||||
defineClass.setAccessible(true);
|
||||
try {
|
||||
// Create a new class using a ClassLoader#defineClass
|
||||
defineClass.invoke(rootClassLoader, nativeLoaderClassName, byteCode, 0, byteCode.length, pd);
|
||||
|
||||
// And also define dependent classes in the root class loader
|
||||
for (int i = 0; i < classesToPreload.length; ++i) {
|
||||
byte[] b = preloadClassByteCode.get(i);
|
||||
defineClass.invoke(rootClassLoader, classesToPreload[i], b, 0, b.length, pd);
|
||||
}
|
||||
}
|
||||
finally {
|
||||
// Reset the accessibility to defineClass method
|
||||
defineClass.setAccessible(false);
|
||||
}
|
||||
|
||||
// Load the SnappyNativeLoader class
|
||||
return rootClassLoader.loadClass(nativeLoaderClassName);
|
||||
|
||||
}
|
||||
catch (Exception e) {
|
||||
e.printStackTrace(System.err);
|
||||
throw new SnappyError(SnappyErrorCode.FAILED_TO_LOAD_NATIVE_LIBRARY, e.getMessage());
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* Load snappy-java's native code using load method of the
|
||||
* SnappyNativeLoader class injected to the root class loader.
|
||||
*
|
||||
* @param loaderClass
|
||||
* @throws SecurityException
|
||||
* @throws NoSuchMethodException
|
||||
* @throws IllegalArgumentException
|
||||
* @throws IllegalAccessException
|
||||
* @throws InvocationTargetException
|
||||
*/
|
||||
private static void loadNativeLibrary(Class< ? > loaderClass) throws SecurityException, NoSuchMethodException,
|
||||
IllegalArgumentException, IllegalAccessException, InvocationTargetException {
|
||||
if (loaderClass == null)
|
||||
throw new SnappyError(SnappyErrorCode.FAILED_TO_LOAD_NATIVE_LIBRARY, "missing snappy native loader class");
|
||||
|
||||
File nativeLib = findNativeLibrary();
|
||||
if (nativeLib != null) {
|
||||
// Load extracted or specified snappyjava native library.
|
||||
Method loadMethod = loaderClass.getDeclaredMethod("load", new Class[] { String.class });
|
||||
loadMethod.invoke(null, nativeLib.getAbsolutePath());
|
||||
nativeLibFile = findNativeLibrary();
|
||||
if (nativeLibFile != null) {
|
||||
// Load extracted or specified snappyjava native library.
|
||||
System.load(nativeLibFile.getAbsolutePath());
|
||||
}
|
||||
else {
|
||||
// Load preinstalled snappyjava (in the path -Djava.library.path)
|
||||
Method loadMethod = loaderClass.getDeclaredMethod("loadLibrary", new Class[] { String.class });
|
||||
loadMethod.invoke(null, "snappyjava");
|
||||
// Load preinstalled snappyjava (in the path -Djava.library.path)
|
||||
System.loadLibrary("snappyjava");
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Computes the MD5 value of the input stream
|
||||
*
|
||||
* @param input
|
||||
* @return
|
||||
* @throws IOException
|
||||
* @throws NoSuchAlgorithmException
|
||||
*/
|
||||
static String md5sum(InputStream input) throws IOException {
|
||||
BufferedInputStream in = new BufferedInputStream(input);
|
||||
try {
|
||||
MessageDigest digest = java.security.MessageDigest.getInstance("MD5");
|
||||
DigestInputStream digestInputStream = new DigestInputStream(in, digest);
|
||||
for (; digestInputStream.read() >= 0;) {
|
||||
|
||||
}
|
||||
ByteArrayOutputStream md5out = new ByteArrayOutputStream();
|
||||
md5out.write(digest.digest());
|
||||
return md5out.toString();
|
||||
private static boolean contentsEquals(InputStream in1, InputStream in2) throws IOException {
|
||||
if(!(in1 instanceof BufferedInputStream)) {
|
||||
in1 = new BufferedInputStream(in1);
|
||||
}
|
||||
catch (NoSuchAlgorithmException e) {
|
||||
throw new IllegalStateException("MD5 algorithm is not available: " + e);
|
||||
if(!(in2 instanceof BufferedInputStream)) {
|
||||
in2 = new BufferedInputStream(in2);
|
||||
}
|
||||
finally {
|
||||
in.close();
|
||||
|
||||
int ch = in1.read();
|
||||
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
|
||||
*
|
||||
@ -366,50 +200,63 @@ public class SnappyLoader
|
||||
*/
|
||||
private static File extractLibraryFile(String libFolderForCurrentOS, String libraryFileName, String targetFolder) {
|
||||
String nativeLibraryFilePath = libFolderForCurrentOS + "/" + libraryFileName;
|
||||
final String prefix = "snappy-" + getVersion() + "-";
|
||||
String extractedLibFileName = prefix + libraryFileName;
|
||||
|
||||
// Attach UUID to the native library file to ensure multiple class loaders can read the libsnappy-java multiple times.
|
||||
String uuid = UUID.randomUUID().toString();
|
||||
String extractedLibFileName = String.format("snappy-%s-%s-%s", getVersion(), uuid, libraryFileName);
|
||||
File extractedLibFile = new File(targetFolder, extractedLibFileName);
|
||||
// Delete extracted lib file on exit.
|
||||
extractedLibFile.deleteOnExit();
|
||||
|
||||
try {
|
||||
if (extractedLibFile.exists()) {
|
||||
// test md5sum value
|
||||
String md5sum1 = md5sum(SnappyLoader.class.getResourceAsStream(nativeLibraryFilePath));
|
||||
String md5sum2 = md5sum(new FileInputStream(extractedLibFile));
|
||||
|
||||
if (md5sum1.equals(md5sum2)) {
|
||||
return new File(targetFolder, extractedLibFileName);
|
||||
}
|
||||
else {
|
||||
// remove old native library file
|
||||
boolean deletionSucceeded = extractedLibFile.delete();
|
||||
if (!deletionSucceeded) {
|
||||
throw new IOException("failed to remove existing native library file: "
|
||||
+ extractedLibFile.getAbsolutePath());
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Extract a native library file into the target directory
|
||||
InputStream reader = SnappyLoader.class.getResourceAsStream(nativeLibraryFilePath);
|
||||
FileOutputStream writer = new FileOutputStream(extractedLibFile);
|
||||
byte[] buffer = new byte[8192];
|
||||
int bytesRead = 0;
|
||||
while ((bytesRead = reader.read(buffer)) != -1) {
|
||||
writer.write(buffer, 0, bytesRead);
|
||||
try {
|
||||
byte[] buffer = new byte[8192];
|
||||
int bytesRead = 0;
|
||||
while ((bytesRead = reader.read(buffer)) != -1) {
|
||||
writer.write(buffer, 0, bytesRead);
|
||||
}
|
||||
}
|
||||
finally {
|
||||
if(writer != null)
|
||||
writer.close();
|
||||
if(reader != null)
|
||||
reader.close();
|
||||
}
|
||||
|
||||
writer.close();
|
||||
reader.close();
|
||||
|
||||
// Set executable (x) flag to enable Java to load the native library
|
||||
if (!System.getProperty("os.name").contains("Windows")) {
|
||||
try {
|
||||
Runtime.getRuntime().exec(new String[] { "chmod", "755", extractedLibFile.getAbsolutePath() })
|
||||
.waitFor();
|
||||
|
||||
// Use following methods added since Java6 (If discarding Java5 is acceptable)
|
||||
//extractedLibFile.setReadable(true);
|
||||
//extractedLibFile.setWritable(true, true);
|
||||
//extractedLibFile.setExecutable(true);
|
||||
}
|
||||
catch (Throwable e) {}
|
||||
}
|
||||
|
||||
|
||||
// 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))
|
||||
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)
|
||||
nativeIn.close();
|
||||
if(extractedLibIn != null)
|
||||
extractedLibIn.close();
|
||||
}
|
||||
}
|
||||
|
||||
return new File(targetFolder, extractedLibFileName);
|
||||
}
|
||||
catch (IOException e) {
|
||||
@ -460,7 +307,7 @@ public class SnappyLoader
|
||||
throw new SnappyError(SnappyErrorCode.FAILED_TO_LOAD_NATIVE_LIBRARY, errorMessage);
|
||||
}
|
||||
|
||||
// Temporary library folder. Use the value of org.xerial.snappy.tempdir or java.io.tmpdir
|
||||
// Temporary folder for the native lib. Use the value of org.xerial.snappy.tempdir or java.io.tmpdir
|
||||
String tempFolder = new File(System.getProperty(KEY_SNAPPY_TEMPDIR,
|
||||
System.getProperty("java.io.tmpdir"))).getAbsolutePath();
|
||||
|
||||
@ -475,8 +322,6 @@ public class SnappyLoader
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* 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
|
||||
|
||||
@ -33,7 +33,7 @@ void throw_exception(JNIEnv *env, jobject self, int errorCode)
|
||||
JNIEXPORT jstring JNICALL Java_org_xerial_snappy_SnappyNative_nativeLibraryVersion
|
||||
(JNIEnv * env, jobject self)
|
||||
{
|
||||
return env->NewStringUTF("1.0.4");
|
||||
return env->NewStringUTF("1.1.0");
|
||||
}
|
||||
|
||||
JNIEXPORT jlong JNICALL Java_org_xerial_snappy_SnappyNative_rawCompress__JJJ
|
||||
@ -90,6 +90,12 @@ JNIEXPORT jint JNICALL Java_org_xerial_snappy_SnappyNative_rawCompress__Ljava_la
|
||||
char* out = (char*) env->GetPrimitiveArrayCritical((jarray) output, 0);
|
||||
if(in == 0 || out == 0) {
|
||||
// out of memory
|
||||
if(in != 0) {
|
||||
env->ReleasePrimitiveArrayCritical((jarray) input, in, 0);
|
||||
}
|
||||
if(out != 0) {
|
||||
env->ReleasePrimitiveArrayCritical((jarray) output, out, 0);
|
||||
}
|
||||
throw_exception(env, self, 4);
|
||||
return 0;
|
||||
}
|
||||
@ -110,6 +116,12 @@ JNIEXPORT jint JNICALL Java_org_xerial_snappy_SnappyNative_rawUncompress__Ljava_
|
||||
char* out = (char*) env->GetPrimitiveArrayCritical((jarray) output, 0);
|
||||
if(in == 0 || out == 0) {
|
||||
// out of memory
|
||||
if(in != 0) {
|
||||
env->ReleasePrimitiveArrayCritical((jarray) input, in, 0);
|
||||
}
|
||||
if(out != 0) {
|
||||
env->ReleasePrimitiveArrayCritical((jarray) output, out, 0);
|
||||
}
|
||||
throw_exception(env, self, 4);
|
||||
return 0;
|
||||
}
|
||||
@ -258,6 +270,19 @@ JNIEXPORT jboolean JNICALL Java_org_xerial_snappy_SnappyNative_isValidCompressed
|
||||
return ret;
|
||||
}
|
||||
|
||||
JNIEXPORT jboolean JNICALL Java_org_xerial_snappy_SnappyNative_isValidCompressedBuffer__JJJ
|
||||
(JNIEnv * env, jobject self, jlong inputAddr, jlong offset, jlong length)
|
||||
{
|
||||
if(inputAddr == 0) {
|
||||
// out of memory
|
||||
throw_exception(env, self, 4);
|
||||
return 0;
|
||||
}
|
||||
bool ret = snappy::IsValidCompressedBuffer((char*) (inputAddr + offset), (size_t) length);
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
JNIEXPORT void JNICALL Java_org_xerial_snappy_SnappyNative_arrayCopy
|
||||
(JNIEnv * env, jobject self, jobject input, jint offset, jint length, jobject output, jint output_offset)
|
||||
{
|
||||
@ -265,6 +290,12 @@ JNIEXPORT void JNICALL Java_org_xerial_snappy_SnappyNative_arrayCopy
|
||||
char* dest = (char*) env->GetPrimitiveArrayCritical((jarray) output, 0);
|
||||
if(src == 0 || dest == 0) {
|
||||
// out of memory
|
||||
if(src != 0) {
|
||||
env->ReleasePrimitiveArrayCritical((jarray) input, src, 0);
|
||||
}
|
||||
if(dest != 0) {
|
||||
env->ReleasePrimitiveArrayCritical((jarray) output, dest, 0);
|
||||
}
|
||||
throw_exception(env, self, 4);
|
||||
return;
|
||||
}
|
||||
|
||||
@ -111,6 +111,14 @@ JNIEXPORT jboolean JNICALL Java_org_xerial_snappy_SnappyNative_isValidCompressed
|
||||
JNIEXPORT jboolean JNICALL Java_org_xerial_snappy_SnappyNative_isValidCompressedBuffer__Ljava_lang_Object_2II
|
||||
(JNIEnv *, jobject, jobject, jint, jint);
|
||||
|
||||
/*
|
||||
* Class: org_xerial_snappy_SnappyNative
|
||||
* Method: isValidCompressedBuffer
|
||||
* Signature: (JJJ)Z
|
||||
*/
|
||||
JNIEXPORT jboolean JNICALL Java_org_xerial_snappy_SnappyNative_isValidCompressedBuffer__JJJ
|
||||
(JNIEnv *, jobject, jlong, jlong, jlong);
|
||||
|
||||
/*
|
||||
* Class: org_xerial_snappy_SnappyNative
|
||||
* Method: arrayCopy
|
||||
|
||||
@ -28,8 +28,7 @@ import java.io.IOException;
|
||||
import java.nio.ByteBuffer;
|
||||
|
||||
/**
|
||||
* <b>Internal only - Do not use this class.</b> JNI interface of the
|
||||
* {@link SnappyNativeAPI} implementation. The native method in this class is
|
||||
* JNI interface of the {@link Snappy} implementation. The native method in this class is
|
||||
* defined in SnappyNative.h (genereted by javah) and SnappyNative.cpp
|
||||
*
|
||||
* <p>
|
||||
@ -40,7 +39,7 @@ import java.nio.ByteBuffer;
|
||||
* @author leo
|
||||
*
|
||||
*/
|
||||
public class SnappyNative implements SnappyNativeAPI
|
||||
public class SnappyNative
|
||||
{
|
||||
|
||||
public native String nativeLibraryVersion();
|
||||
@ -77,6 +76,8 @@ public class SnappyNative implements SnappyNativeAPI
|
||||
|
||||
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 void arrayCopy(Object src, int offset, int byteLength, Object dest, int dOffset) throws IOException;
|
||||
|
||||
public void throw_error(int errorCode) throws IOException {
|
||||
|
||||
@ -1,82 +0,0 @@
|
||||
/*--------------------------------------------------------------------------
|
||||
* Copyright 2011 Taro L. Saito
|
||||
*
|
||||
* Licensed 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
|
||||
*
|
||||
* 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.
|
||||
*--------------------------------------------------------------------------*/
|
||||
//--------------------------------------
|
||||
// snappy-java Project
|
||||
//
|
||||
// SnappyNative.java
|
||||
// Since: 2011/03/30
|
||||
//
|
||||
// $URL$
|
||||
// $Author$
|
||||
//--------------------------------------
|
||||
package org.xerial.snappy;
|
||||
|
||||
import java.io.IOException;
|
||||
import java.nio.ByteBuffer;
|
||||
|
||||
/**
|
||||
* <b>Internal only - Do not use this class.</b>
|
||||
*
|
||||
* Interface to access the native code of Snappy. Although this class members
|
||||
* are public, do not use them directly. Use {@link Snappy} API instead.
|
||||
*
|
||||
*
|
||||
* @author leo
|
||||
*
|
||||
*/
|
||||
public interface SnappyNativeAPI
|
||||
{
|
||||
|
||||
public String nativeLibraryVersion();
|
||||
|
||||
// ------------------------------------------------------------------------
|
||||
// Generic compression/decompression routines.
|
||||
// ------------------------------------------------------------------------
|
||||
public long rawCompress(long inputAddr, long inputSize, long destAddr) throws IOException;
|
||||
public long rawUncompress(long inputAddr, long inputSize, long destAddr) throws IOException;
|
||||
|
||||
public int rawCompress(ByteBuffer input, int inputOffset, int inputLength, ByteBuffer compressed, int outputOffset)
|
||||
throws IOException;
|
||||
|
||||
public int rawCompress(Object input, int inputOffset, int inputByteLength, Object output, int outputOffset) throws IOException;
|
||||
|
||||
public int rawUncompress(ByteBuffer compressed, int inputOffset, int inputLength, ByteBuffer uncompressed,
|
||||
int outputOffset) throws IOException;
|
||||
|
||||
public int rawUncompress(Object input, int inputOffset, int inputLength, Object output, int outputOffset)
|
||||
throws IOException;
|
||||
|
||||
// Returns the maximal size of the compressed representation of
|
||||
// input data that is "source_bytes" bytes in length;
|
||||
public int maxCompressedLength(int source_bytes);
|
||||
|
||||
// This operation takes O(1) time.
|
||||
public int uncompressedLength(ByteBuffer compressed, int offset, int len) throws IOException;
|
||||
|
||||
public int uncompressedLength(Object input, int offset, int len) throws IOException;
|
||||
|
||||
public long uncompressedLength(long inputAddr, long len) throws IOException;
|
||||
|
||||
|
||||
public boolean isValidCompressedBuffer(ByteBuffer compressed, int offset, int len) throws IOException;
|
||||
|
||||
public boolean isValidCompressedBuffer(Object input, int offset, int len) throws IOException;
|
||||
|
||||
public void arrayCopy(Object src, int offset, int byteLength, Object dest, int dOffset) throws IOException;
|
||||
|
||||
public void throw_error(int errorCode) throws IOException;
|
||||
|
||||
}
|
||||
Binary file not shown.
Binary file not shown.
Binary file not shown.
Binary file not shown.
BIN
src/main/resources/org/xerial/snappy/native/Linux/x86/libsnappyjava.so
Executable file
BIN
src/main/resources/org/xerial/snappy/native/Linux/x86/libsnappyjava.so
Executable file
Binary file not shown.
BIN
src/main/resources/org/xerial/snappy/native/Linux/x86_64/libsnappyjava.so
Executable file
BIN
src/main/resources/org/xerial/snappy/native/Linux/x86_64/libsnappyjava.so
Executable file
Binary file not shown.
BIN
src/main/resources/org/xerial/snappy/native/Mac/x86/libsnappyjava.jnilib
Executable file
BIN
src/main/resources/org/xerial/snappy/native/Mac/x86/libsnappyjava.jnilib
Executable file
Binary file not shown.
Binary file not shown.
BIN
src/main/resources/org/xerial/snappy/native/OpenBSD/x86/libsnappyjava.so
Executable file
BIN
src/main/resources/org/xerial/snappy/native/OpenBSD/x86/libsnappyjava.so
Executable file
Binary file not shown.
BIN
src/main/resources/org/xerial/snappy/native/OpenBSD/x86_64/libsnappyjava.so
Executable file
BIN
src/main/resources/org/xerial/snappy/native/OpenBSD/x86_64/libsnappyjava.so
Executable file
Binary file not shown.
BIN
src/main/resources/org/xerial/snappy/native/SunOS/sparc/libsnappyjava.so
Executable file
BIN
src/main/resources/org/xerial/snappy/native/SunOS/sparc/libsnappyjava.so
Executable file
Binary file not shown.
BIN
src/main/resources/org/xerial/snappy/native/SunOS/x86/libsnappyjava.so
Executable file
BIN
src/main/resources/org/xerial/snappy/native/SunOS/x86/libsnappyjava.so
Executable file
Binary file not shown.
Binary file not shown.
Binary file not shown.
@ -24,14 +24,20 @@
|
||||
//--------------------------------------
|
||||
package org.xerial.snappy;
|
||||
|
||||
import static org.junit.Assert.*;
|
||||
import static org.junit.Assert.assertArrayEquals;
|
||||
import static org.junit.Assert.assertEquals;
|
||||
|
||||
import java.io.ByteArrayInputStream;
|
||||
import java.io.ByteArrayOutputStream;
|
||||
import java.io.File;
|
||||
import java.io.FileInputStream;
|
||||
import java.io.FileOutputStream;
|
||||
import java.io.IOException;
|
||||
import java.io.InputStream;
|
||||
|
||||
import org.junit.Rule;
|
||||
import org.junit.Test;
|
||||
import org.junit.rules.TemporaryFolder;
|
||||
import org.xerial.util.FileResource;
|
||||
import org.xerial.util.log.Logger;
|
||||
|
||||
@ -44,6 +50,9 @@ import org.xerial.util.log.Logger;
|
||||
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 {
|
||||
InputStream in = FileResource.find(CalgaryTest.class, file).openStream();
|
||||
@ -91,6 +100,83 @@ public class CalgaryTest
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
public void streamFramed() throws Exception {
|
||||
for (String f : files) {
|
||||
byte[] orig = readFile("testdata/calgary/" + f);
|
||||
|
||||
ByteArrayOutputStream compressedBuf = new ByteArrayOutputStream();
|
||||
SnappyFramedOutputStream out = new SnappyFramedOutputStream(compressedBuf);
|
||||
out.write(orig);
|
||||
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 {
|
||||
for (String f : files) {
|
||||
byte[] orig = readFile("testdata/calgary/" + f);
|
||||
|
||||
final File tempFile = tempFolder.newFile(f);
|
||||
final FileOutputStream compressedFOS = new FileOutputStream(tempFile);
|
||||
try
|
||||
{
|
||||
SnappyFramedOutputStream out = new SnappyFramedOutputStream(compressedFOS);
|
||||
out.write(orig);
|
||||
out.close();
|
||||
}
|
||||
finally
|
||||
{
|
||||
compressedFOS.close();
|
||||
}
|
||||
|
||||
byte[] uncompressed = new byte[orig.length];
|
||||
|
||||
final FileInputStream compressedFIS = new FileInputStream(tempFile);
|
||||
try
|
||||
{
|
||||
SnappyFramedInputStream in = new SnappyFramedInputStream(compressedFIS.getChannel());
|
||||
int readBytes = readBytes(in, uncompressed, 0, orig.length);
|
||||
|
||||
assertEquals(orig.length, readBytes);
|
||||
}
|
||||
finally
|
||||
{
|
||||
compressedFIS.close();
|
||||
}
|
||||
|
||||
assertArrayEquals(orig, uncompressed);
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
public void streamFramedNoCRCVerify() throws Exception {
|
||||
for (String f : files) {
|
||||
byte[] orig = readFile("testdata/calgary/" + f);
|
||||
|
||||
ByteArrayOutputStream compressedBuf = new ByteArrayOutputStream();
|
||||
SnappyFramedOutputStream out = new SnappyFramedOutputStream(compressedBuf);
|
||||
out.write(orig);
|
||||
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 {
|
||||
for (String f : files) {
|
||||
@ -115,4 +201,28 @@ public class CalgaryTest
|
||||
}
|
||||
}
|
||||
|
||||
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)
|
||||
{
|
||||
// as long the buffer is not full (remaining() == 0) and we have not reached EOF (lastRead == -1) keep reading.
|
||||
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)
|
||||
{
|
||||
totalRead += lastRead;
|
||||
}
|
||||
}
|
||||
}
|
||||
return totalRead;
|
||||
}
|
||||
}
|
||||
|
||||
68
src/test/java/org/xerial/snappy/RandomGenerator.java
Normal file
68
src/test/java/org/xerial/snappy/RandomGenerator.java
Normal file
@ -0,0 +1,68 @@
|
||||
/*
|
||||
* Created: Apr 15, 2013
|
||||
*/
|
||||
package org.xerial.snappy;
|
||||
|
||||
import java.util.Random;
|
||||
|
||||
/**
|
||||
* Generates random data with specific expected snappy performance characteristics.
|
||||
*
|
||||
* <p>
|
||||
* This has been copied from <a href="https://github.com/dain/snappy"> dain's snappy</a> implementation..
|
||||
* </p>
|
||||
*/
|
||||
public class RandomGenerator {
|
||||
|
||||
public final byte[] data;
|
||||
public int position;
|
||||
|
||||
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.
|
||||
Random rnd = new Random(301);
|
||||
data = new byte[1048576 + 100];
|
||||
for (int i = 0; i < 1048576; i += 100) {
|
||||
// Add a short fragment that is as compressible as specified ratio
|
||||
System.arraycopy(compressibleData(rnd, compressionRatio, 100), 0,
|
||||
data, i, 100);
|
||||
}
|
||||
}
|
||||
|
||||
public int getNextPosition(int length) {
|
||||
if (position + length > data.length) {
|
||||
position = 0;
|
||||
assert (length < data.length);
|
||||
}
|
||||
int result = position;
|
||||
position += length;
|
||||
return result;
|
||||
}
|
||||
|
||||
private static byte[] compressibleData(Random random,
|
||||
double compressionRatio, int length) {
|
||||
int raw = (int) (length * compressionRatio);
|
||||
if (raw < 1) {
|
||||
raw = 1;
|
||||
}
|
||||
byte[] rawData = generateRandomData(random, raw);
|
||||
|
||||
// Duplicate the random data until we have filled "length" bytes
|
||||
byte[] dest = new byte[length];
|
||||
for (int i = 0; i < length;) {
|
||||
int chunkLength = Math.min(rawData.length, length - i);
|
||||
System.arraycopy(rawData, 0, dest, i, chunkLength);
|
||||
i += chunkLength;
|
||||
}
|
||||
return dest;
|
||||
}
|
||||
|
||||
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);
|
||||
}
|
||||
return rawData;
|
||||
}
|
||||
}
|
||||
300
src/test/java/org/xerial/snappy/SnappyFramedStreamTest.java
Normal file
300
src/test/java/org/xerial/snappy/SnappyFramedStreamTest.java
Normal file
@ -0,0 +1,300 @@
|
||||
/*
|
||||
* Created: Mar 14, 2013
|
||||
*/
|
||||
package org.xerial.snappy;
|
||||
|
||||
import static org.xerial.snappy.SnappyFramed.*;
|
||||
import static org.junit.Assert.*;
|
||||
|
||||
import java.io.ByteArrayInputStream;
|
||||
import java.io.ByteArrayOutputStream;
|
||||
import java.io.EOFException;
|
||||
import java.io.IOException;
|
||||
import java.io.InputStream;
|
||||
import java.io.OutputStream;
|
||||
import java.util.Arrays;
|
||||
|
||||
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 {
|
||||
|
||||
/**
|
||||
* @throws IOException
|
||||
*/
|
||||
protected OutputStream createOutputStream(OutputStream target)
|
||||
throws IOException {
|
||||
return new SnappyFramedOutputStream(target);
|
||||
}
|
||||
|
||||
/**
|
||||
* {@inheritDoc}
|
||||
*
|
||||
* @throws IOException
|
||||
*/
|
||||
protected InputStream createInputStream(InputStream source,
|
||||
boolean verifyCheckSums) throws IOException {
|
||||
return new SnappyFramedInputStream(source, verifyCheckSums);
|
||||
}
|
||||
|
||||
protected byte[] getMarkerFrame() {
|
||||
return HEADER_BYTES;
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testSimple() throws Exception {
|
||||
byte[] original = "aaaaaaaaaaaabbbbbbbaaaaaa".getBytes("utf-8");
|
||||
|
||||
byte[] compressed = compress(original);
|
||||
byte[] uncompressed = uncompress(compressed);
|
||||
|
||||
assertArrayEquals(uncompressed, original);
|
||||
// 10 byte stream header, 4 byte block header, 4 byte crc, 19 bytes
|
||||
assertEquals(compressed.length, 37);
|
||||
|
||||
// stream header
|
||||
assertArrayEquals(Arrays.copyOf(compressed, 10), HEADER_BYTES);
|
||||
|
||||
// flag: compressed
|
||||
assertEquals(toInt(compressed[10]), COMPRESSED_DATA_FLAG);
|
||||
|
||||
// length: 23 = 0x000017
|
||||
assertEquals(toInt(compressed[11]), 0x17);
|
||||
assertEquals(toInt(compressed[12]), 0x00);
|
||||
assertEquals(toInt(compressed[13]), 0x00);
|
||||
|
||||
// crc32c: 0x9274cda8
|
||||
assertEquals(toInt(compressed[17]), 0x92);
|
||||
assertEquals(toInt(compressed[16]), 0x74);
|
||||
assertEquals(toInt(compressed[15]), 0xCD);
|
||||
assertEquals(toInt(compressed[14]), 0xA8);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testUncompressable() throws Exception {
|
||||
byte[] random = getRandom(1, 5000);
|
||||
int crc32c = maskedCrc32c(random);
|
||||
|
||||
byte[] compressed = compress(random);
|
||||
byte[] uncompressed = uncompress(compressed);
|
||||
|
||||
assertArrayEquals(uncompressed, random);
|
||||
assertEquals(compressed.length, random.length + 10 + 4 + 4);
|
||||
|
||||
// flag: uncompressed
|
||||
assertEquals(toInt(compressed[10]), UNCOMPRESSED_DATA_FLAG);
|
||||
|
||||
// length: 5004 = 0x138c
|
||||
assertEquals(toInt(compressed[13]), 0x00);
|
||||
assertEquals(toInt(compressed[12]), 0x13);
|
||||
assertEquals(toInt(compressed[11]), 0x8c);
|
||||
}
|
||||
|
||||
@Test
|
||||
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 });
|
||||
}
|
||||
|
||||
@Test(expected = EOFException.class)
|
||||
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' });
|
||||
}
|
||||
|
||||
@Test
|
||||
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 });
|
||||
fail("no exception thrown with flag: " + Integer.toHexString(i));
|
||||
} catch (IOException e) {
|
||||
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
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) {
|
||||
fail("exception thrown with flag: " + Integer.toHexString(i));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@Test(expected = IOException.class)
|
||||
public void testInvalidBlockSizeZero() throws Exception {
|
||||
// flag = '0', block size = 4, crc32c = 0
|
||||
uncompressBlock(new byte[] { 1, 4, 0, 0, 0, 0, 0, 0 });
|
||||
}
|
||||
|
||||
@Test(expected = IOException.class)
|
||||
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' });
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testInvalidChecksumIgnoredWhenVerificationDisabled()
|
||||
throws Exception {
|
||||
// flag = 0, size = 4, crc32c = 0, block data = [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' });
|
||||
}
|
||||
|
||||
@Test
|
||||
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);
|
||||
stream[13] = (byte) (length >>> 16);
|
||||
|
||||
int crc32c = maskedCrc32c(random);
|
||||
stream[14] = (byte) crc32c;
|
||||
stream[15] = (byte) (crc32c >>> 8);
|
||||
stream[16] = (byte) (crc32c >>> 16);
|
||||
stream[17] = (byte) (crc32c >>> 24);
|
||||
|
||||
System.arraycopy(random, 0, stream, 18, random.length);
|
||||
|
||||
final byte[] uncompressed = uncompress(stream);
|
||||
|
||||
assertArrayEquals(random, uncompressed);
|
||||
}
|
||||
|
||||
@Test
|
||||
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);
|
||||
stream[13] = (byte) (length >>> 16);
|
||||
|
||||
int crc32c = maskedCrc32c(random);
|
||||
stream[14] = (byte) crc32c;
|
||||
stream[15] = (byte) (crc32c >>> 8);
|
||||
stream[16] = (byte) (crc32c >>> 16);
|
||||
stream[17] = (byte) (crc32c >>> 24);
|
||||
|
||||
System.arraycopy(compressed, 0, stream, 18, compressed.length);
|
||||
|
||||
final byte[] uncompressed = uncompress(stream);
|
||||
|
||||
assertArrayEquals(random, uncompressed);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testLargerFrames_compressed_smaller_raw_larger()
|
||||
throws IOException {
|
||||
final byte[] random = getRandom(0.5, 100000);
|
||||
|
||||
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);
|
||||
stream[13] = (byte) (length >>> 16);
|
||||
|
||||
int crc32c = maskedCrc32c(random);
|
||||
stream[14] = (byte) crc32c;
|
||||
stream[15] = (byte) (crc32c >>> 8);
|
||||
stream[16] = (byte) (crc32c >>> 16);
|
||||
stream[17] = (byte) (crc32c >>> 24);
|
||||
|
||||
System.arraycopy(compressed, 0, stream, 18, compressed.length);
|
||||
|
||||
final byte[] uncompressed = uncompress(stream);
|
||||
|
||||
assertArrayEquals(random, uncompressed);
|
||||
}
|
||||
|
||||
private byte[] uncompressBlock(byte[] block) throws IOException {
|
||||
return uncompress(blockToStream(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 {
|
||||
ByteArrayOutputStream out = new ByteArrayOutputStream();
|
||||
OutputStream snappyOut = createOutputStream(out);
|
||||
snappyOut.write(original);
|
||||
snappyOut.close();
|
||||
return out.toByteArray();
|
||||
}
|
||||
|
||||
protected byte[] uncompress(byte[] compressed) throws IOException {
|
||||
return toByteArray(createInputStream(new ByteArrayInputStream(
|
||||
compressed), true));
|
||||
}
|
||||
|
||||
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) {
|
||||
baos.write(buffer, 0, read);
|
||||
}
|
||||
|
||||
return baos.toByteArray();
|
||||
}
|
||||
|
||||
static int toInt(byte value) {
|
||||
return value & 0xFF;
|
||||
}
|
||||
|
||||
private byte[] getRandom(double compressionRatio, int length) {
|
||||
RandomGenerator gen = new RandomGenerator(
|
||||
compressionRatio);
|
||||
gen.getNextPosition(length);
|
||||
byte[] random = Arrays.copyOf(gen.data, length);
|
||||
assertEquals(random.length, length);
|
||||
return random;
|
||||
}
|
||||
|
||||
}
|
||||
@ -24,23 +24,20 @@
|
||||
//--------------------------------------
|
||||
package org.xerial.snappy;
|
||||
|
||||
import static org.junit.Assert.*;
|
||||
|
||||
import java.io.BufferedInputStream;
|
||||
import java.io.ByteArrayOutputStream;
|
||||
import java.io.File;
|
||||
import java.io.FileNotFoundException;
|
||||
import java.io.IOException;
|
||||
import java.lang.reflect.Method;
|
||||
import java.net.URL;
|
||||
import java.net.URLClassLoader;
|
||||
|
||||
import org.codehaus.plexus.classworlds.ClassWorld;
|
||||
import org.codehaus.plexus.classworlds.realm.ClassRealm;
|
||||
import org.junit.Test;
|
||||
import org.xerial.util.FileResource;
|
||||
import org.xerial.util.log.Logger;
|
||||
|
||||
import java.io.*;
|
||||
import java.lang.reflect.Method;
|
||||
import java.net.URL;
|
||||
import java.net.URLClassLoader;
|
||||
|
||||
import static org.junit.Assert.assertArrayEquals;
|
||||
import static org.junit.Assert.fail;
|
||||
|
||||
public class SnappyLoaderTest
|
||||
{
|
||||
private static Logger _logger = Logger.getLogger(SnappyLoaderTest.class);
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user