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audk/EdkCompatibilityPkg/Foundation/Library/Dxe/Print/Print.c

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/*++
Copyright (c) 2004 - 2007, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module Name:
Print.c
Abstract:
Basic Ascii AvSPrintf() function named VSPrint(). VSPrint() enables very
simple implemenation of SPrint() and Print() to support debug.
You can not Print more than EFI_DRIVER_LIB_MAX_PRINT_BUFFER characters at a
time. This makes the implementation very simple.
VSPrint, Print, SPrint format specification has the follwoing form
%[flags][width]type
flags:
'-' - Left justify
'+' - Prefix a sign
' ' - Prefix a blank
',' - Place commas in numberss
'0' - Prefix for width with zeros
'l' - UINT64
'L' - UINT64
width:
'*' - Get width from a UINTN argumnet from the argument list
Decimal number that represents width of print
type:
'X' - argument is a UINTN hex number, prefix '0'
'x' - argument is a hex number
'd' - argument is a decimal number
'a' - argument is an ascii string
'S','s' - argument is an Unicode string
'g' - argument is a pointer to an EFI_GUID
't' - argument is a pointer to an EFI_TIME structure
'c' - argument is an ascii character
'r' - argument is EFI_STATUS
'%' - Print a %
--*/
#include "TianoCommon.h"
#include "EfiCommonLib.h"
#include "PrintWidth.h"
#include "EfiPrintLib.h"
#include "Print.h"
STATIC
CHAR_W *
GetFlagsAndWidth (
IN CHAR_W *Format,
OUT UINTN *Flags,
OUT UINTN *Width,
IN OUT VA_LIST *Marker
);
STATIC
UINTN
GuidToString (
IN EFI_GUID *Guid,
IN OUT CHAR_W *Buffer,
IN UINTN BufferSize
);
STATIC
UINTN
TimeToString (
IN EFI_TIME *Time,
IN OUT CHAR_W *Buffer,
IN UINTN BufferSize
);
STATIC
UINTN
EfiStatusToString (
IN EFI_STATUS Status,
OUT CHAR_W *Buffer,
IN UINTN BufferSize
);
UINTN
SPrint (
OUT CHAR_W *Buffer,
IN UINTN BufferSize,
IN CONST CHAR_W *Format,
...
)
/*++
Routine Description:
SPrint function to process format and place the results in Buffer.
Arguments:
Buffer - Wide char buffer to print the results of the parsing of Format into.
BufferSize - Maximum number of characters to put into buffer. Zero means no
limit.
Format - Format string see file header for more details.
... - Vararg list consumed by processing Format.
Returns:
Number of characters printed.
--*/
{
UINTN Return;
VA_LIST Marker;
VA_START (Marker, Format);
Return = VSPrint (Buffer, BufferSize, Format, Marker);
VA_END (Marker);
return Return;
}
UINTN
EFIAPI
VSPrint (
OUT CHAR_W *StartOfBuffer,
IN UINTN BufferSize,
IN CONST CHAR_W *FormatString,
IN VA_LIST Marker
)
/*++
Routine Description:
VSPrint function to process format and place the results in Buffer. Since a
VA_LIST is used this rountine allows the nesting of Vararg routines. Thus
this is the main print working routine
Arguments:
StartOfBuffer - Unicode buffer to print the results of the parsing of Format into.
BufferSize - Maximum number of characters to put into buffer. Zero means
no limit.
FormatString - Unicode format string see file header for more details.
Marker - Vararg list consumed by processing Format.
Returns:
Number of characters printed.
--*/
{
CHAR16 TempBuffer[CHARACTER_NUMBER_FOR_VALUE];
CHAR_W *Buffer;
CHAR8 *AsciiStr;
CHAR16 *UnicodeStr;
CHAR_W *Format;
UINTN Index;
UINTN Flags;
UINTN Width;
UINTN Count;
UINTN NumberOfCharacters;
UINTN BufferLeft;
UINT64 Value;
EFI_GUID *TmpGUID;
//
// Process the format string. Stop if Buffer is over run.
//
Buffer = StartOfBuffer;
Format = (CHAR_W *)FormatString;
NumberOfCharacters = BufferSize/sizeof(CHAR_W);
BufferLeft = BufferSize;
for (Index = 0; (*Format != '\0') && (Index < NumberOfCharacters - 1); Format++) {
if (*Format != '%') {
if ((*Format == '\n') && (Index < NumberOfCharacters - 2)) {
//
// If carage return add line feed
//
Buffer[Index++] = '\r';
BufferLeft -= sizeof(CHAR_W);
}
Buffer[Index++] = *Format;
BufferLeft -= sizeof(CHAR_W);
} else {
//
// Now it's time to parse what follows after %
//
Format = GetFlagsAndWidth (Format, &Flags, &Width, &Marker);
switch (*Format) {
case 'X':
Flags |= PREFIX_ZERO;
Width = sizeof (UINT64) * 2;
//
// break skiped on purpose
//
case 'x':
if ((Flags & LONG_TYPE) == LONG_TYPE) {
Value = VA_ARG (Marker, UINT64);
} else {
Value = VA_ARG (Marker, UINTN);
}
EfiValueToHexStr (TempBuffer, Value, Flags, Width);
UnicodeStr = TempBuffer;
for ( ;(*UnicodeStr != '\0') && (Index < NumberOfCharacters - 1); UnicodeStr++) {
Buffer[Index++] = *UnicodeStr;
}
break;
case 'd':
if ((Flags & LONG_TYPE) == LONG_TYPE) {
Value = VA_ARG (Marker, UINT64);
} else {
Value = (UINTN)VA_ARG (Marker, UINTN);
}
EfiValueToString (TempBuffer, Value, Flags, Width);
UnicodeStr = TempBuffer;
for ( ;(*UnicodeStr != '\0') && (Index < NumberOfCharacters - 1); UnicodeStr++) {
Buffer[Index++] = *UnicodeStr;
}
break;
case 's':
case 'S':
UnicodeStr = (CHAR16 *)VA_ARG (Marker, CHAR_W *);
if (UnicodeStr == NULL) {
UnicodeStr = L"<null string>";
}
for (Count = 0 ;(*UnicodeStr != '\0') && (Index < NumberOfCharacters - 1); UnicodeStr++, Count++) {
Buffer[Index++] = *UnicodeStr;
}
//
// Add padding if needed
//
for (; (Count < Width) && (Index < NumberOfCharacters - 1); Count++) {
Buffer[Index++] = ' ';
}
break;
case 'a':
AsciiStr = (CHAR8 *)VA_ARG (Marker, CHAR8 *);
if (AsciiStr == NULL) {
AsciiStr = "<null string>";
}
for (Count = 0 ;(*AsciiStr != '\0') && (Index < NumberOfCharacters - 1); AsciiStr++, Count++) {
Buffer[Index++] = (CHAR_W)*AsciiStr;
}
//
// Add padding if needed
//
for (;(Count < Width) && (Index < NumberOfCharacters - 1); Count++) {
Buffer[Index++] = ' ';
}
break;
case 'c':
Buffer[Index++] = (CHAR_W)VA_ARG (Marker, UINTN);
break;
case 'g':
TmpGUID = VA_ARG (Marker, EFI_GUID *);
if (TmpGUID != NULL) {
Index += GuidToString (
TmpGUID,
&Buffer[Index],
BufferLeft
);
}
break;
case 't':
Index += TimeToString (
VA_ARG (Marker, EFI_TIME *),
&Buffer[Index],
BufferLeft
);
break;
case 'r':
Index += EfiStatusToString (
VA_ARG (Marker, EFI_STATUS),
&Buffer[Index],
BufferLeft
);
break;
case '%':
Buffer[Index++] = *Format;
break;
default:
//
// if the type is unknown print it to the screen
//
Buffer[Index++] = *Format;
}
BufferLeft = BufferSize - Index * sizeof(CHAR_W) ;
}
}
Buffer[Index++] = '\0';
return &Buffer[Index] - StartOfBuffer;
}
STATIC
CHAR_W *
GetFlagsAndWidth (
IN CHAR_W *Format,
OUT UINTN *Flags,
OUT UINTN *Width,
IN OUT VA_LIST *Marker
)
/*++
Routine Description:
VSPrint worker function that parses flag and width information from the
Format string and returns the next index into the Format string that needs
to be parsed. See file headed for details of Flag and Width.
Arguments:
Format - Current location in the VSPrint format string.
Flags - Returns flags
Width - Returns width of element
Marker - Vararg list that may be paritally consumed and returned.
Returns:
Pointer indexed into the Format string for all the information parsed
by this routine.
--*/
{
UINTN Count;
BOOLEAN Done;
*Flags = 0;
*Width = 0;
for (Done = FALSE; !Done; ) {
Format++;
switch (*Format) {
case '-': *Flags |= LEFT_JUSTIFY; break;
case '+': *Flags |= PREFIX_SIGN; break;
case ' ': *Flags |= PREFIX_BLANK; break;
case ',': *Flags |= COMMA_TYPE; break;
case 'L':
case 'l': *Flags |= LONG_TYPE; break;
case '*':
*Width = VA_ARG (*Marker, UINTN);
break;
case '0':
*Flags |= PREFIX_ZERO;
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
Count = 0;
do {
Count = (Count * 10) + *Format - '0';
Format++;
} while ((*Format >= '0') && (*Format <= '9'));
Format--;
*Width = Count;
break;
default:
Done = TRUE;
}
}
return Format;
}
STATIC
UINTN
GuidToString (
IN EFI_GUID *Guid,
IN CHAR_W *Buffer,
IN UINTN BufferSize
)
/*++
Routine Description:
VSPrint worker function that prints an EFI_GUID.
Arguments:
Guid - Pointer to GUID to print.
Buffer - Buffe to print Guid into.
BufferSize - Size of Buffer.
Returns:
Number of characters printed.
--*/
{
UINTN Size;
Size = SPrint (
Buffer,
BufferSize,
STRING_W ("%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x"),
(UINTN)Guid->Data1,
(UINTN)Guid->Data2,
(UINTN)Guid->Data3,
(UINTN)Guid->Data4[0],
(UINTN)Guid->Data4[1],
(UINTN)Guid->Data4[2],
(UINTN)Guid->Data4[3],
(UINTN)Guid->Data4[4],
(UINTN)Guid->Data4[5],
(UINTN)Guid->Data4[6],
(UINTN)Guid->Data4[7]
);
//
// SPrint will null terminate the string. The -1 skips the null
//
return Size - 1;
}
STATIC
UINTN
TimeToString (
IN EFI_TIME *Time,
OUT CHAR_W *Buffer,
IN UINTN BufferSize
)
/*++
Routine Description:
VSPrint worker function that prints EFI_TIME.
Arguments:
Time - Pointer to EFI_TIME sturcture to print.
Buffer - Buffer to print Time into.
BufferSize - Size of Buffer.
Returns:
Number of characters printed.
--*/
{
UINTN Size;
Size = SPrint (
Buffer,
BufferSize,
STRING_W ("%02d/%02d/%04d %02d:%02d"),
(UINTN)Time->Month,
(UINTN)Time->Day,
(UINTN)Time->Year,
(UINTN)Time->Hour,
(UINTN)Time->Minute
);
//
// SPrint will null terminate the string. The -1 skips the null
//
return Size - 1;
}
STATIC
UINTN
EfiStatusToString (
IN EFI_STATUS Status,
OUT CHAR_W *Buffer,
IN UINTN BufferSize
)
/*++
Routine Description:
VSPrint worker function that prints EFI_STATUS as a string. If string is
not known a hex value will be printed.
Arguments:
Status - EFI_STATUS sturcture to print.
Buffer - Buffer to print EFI_STATUS message string into.
BufferSize - Size of Buffer.
Returns:
Number of characters printed.
--*/
{
UINTN Size;
CHAR8 *Desc;
Desc = NULL;
//
// Can't use global Status String Array as UINTN is not constant for EBC
//
if (Status == EFI_SUCCESS) { Desc = "Success"; } else
if (Status == EFI_LOAD_ERROR) { Desc = "Load Error"; } else
if (Status == EFI_INVALID_PARAMETER) { Desc = "Invalid Parameter"; } else
if (Status == EFI_UNSUPPORTED) { Desc = "Unsupported"; } else
if (Status == EFI_BAD_BUFFER_SIZE) { Desc = "Bad Buffer Size"; } else
if (Status == EFI_BUFFER_TOO_SMALL) { Desc = "Buffer Too Small"; } else
if (Status == EFI_NOT_READY) { Desc = "Not Ready"; } else
if (Status == EFI_DEVICE_ERROR) { Desc = "Device Error"; } else
if (Status == EFI_WRITE_PROTECTED) { Desc = "Write Protected"; } else
if (Status == EFI_OUT_OF_RESOURCES) { Desc = "Out of Resources"; } else
if (Status == EFI_VOLUME_CORRUPTED) { Desc = "Volume Corrupt"; } else
if (Status == EFI_VOLUME_FULL) { Desc = "Volume Full"; } else
if (Status == EFI_NO_MEDIA) { Desc = "No Media"; } else
if (Status == EFI_MEDIA_CHANGED) { Desc = "Media changed"; } else
if (Status == EFI_NOT_FOUND) { Desc = "Not Found"; } else
if (Status == EFI_ACCESS_DENIED) { Desc = "Access Denied"; } else
if (Status == EFI_NO_RESPONSE) { Desc = "No Response"; } else
if (Status == EFI_NO_MAPPING) { Desc = "No mapping"; } else
if (Status == EFI_TIMEOUT) { Desc = "Time out"; } else
if (Status == EFI_NOT_STARTED) { Desc = "Not started"; } else
if (Status == EFI_ALREADY_STARTED) { Desc = "Already started"; } else
if (Status == EFI_ABORTED) { Desc = "Aborted"; } else
if (Status == EFI_ICMP_ERROR) { Desc = "ICMP Error"; } else
if (Status == EFI_TFTP_ERROR) { Desc = "TFTP Error"; } else
if (Status == EFI_PROTOCOL_ERROR) { Desc = "Protocol Error"; } else
if (Status == EFI_WARN_UNKNOWN_GLYPH) { Desc = "Warning Unknown Glyph"; } else
if (Status == EFI_WARN_DELETE_FAILURE) { Desc = "Warning Delete Failure"; } else
if (Status == EFI_WARN_WRITE_FAILURE) { Desc = "Warning Write Failure"; } else
if (Status == EFI_WARN_BUFFER_TOO_SMALL) { Desc = "Warning Buffer Too Small"; }
//
// If we found a match, copy the message to the user's buffer. Otherwise
// sprint the hex status code to their buffer.
//
if (Desc != NULL) {
Size = SPrint (Buffer, BufferSize, STRING_W ("%a"), Desc);
} else {
Size = SPrint (Buffer, BufferSize, STRING_W ("%X"), Status);
}
return Size - 1;
}
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