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windows-nt-4.0/private/sdktools/lztest/lztest.c

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/*++
Copyright (c) 1989 Microsoft Corporation
Module Name:
LzTest.c
Abstract:
This module implements a LZ compression test program
Author:
Gary Kimura [garyki] 16-Jan-1994
Revision History:
--*/
//
// Include the standard header files.
//
#include <stdio.h>
#include <stdlib.h>
#include <windows.h>
#include "lztest.h"
typedef VOID (*ACTION_ROUTINE) (
IN PCHAR FileName,
IN HANDLE InputHandle,
IN HANDLE OutputHandle
);
ACTION_ROUTINE ActionRoutine = NULL;
COMPRESS_ROUTINE CompressRoutine = NULL;
DECOMPRESS_ROUTINE DecompressRoutine = NULL;
STATISTICS_ROUTINE StatisticsRoutine = NULL;
STATISTICS_ROUTINE ResetStatistics = NULL;
MATCH_FUNCTION MatchFunction = NULL;
CHAR FileExtension[16];
ULONG UncompressedBufferSize = 4096;
BOOLEAN WriteOutputFile = FALSE;
BOOLEAN Verbose = FALSE;
BOOLEAN Statistics = FALSE;
#define MAX_BUFFER_SIZE (0x20000)
UCHAR CompressedBuffer[MAX_BUFFER_SIZE];
UCHAR UncompressedBuffer[MAX_BUFFER_SIZE];
LONGLONG TotalFileCount = 0;
LONGLONG TotalCompressedSize = 0;
LONGLONG TotalUncompressedSize = 0;
VOID
PrintSyntax()
{
printf("To Compress a set of files\n");
printf("\n");
printf(" LZTEST [/S] [/V] /{C | c} /<engine> {fileSpec}+\n");
printf("\n");
printf(" where <engine> is either\n");
printf("\n");
printf(" LZOPT - 12/4 encoding with an exhaustive match function.\n");
printf(" LZNT1 - 12/4 encoding with a 3 character lookup table.\n");
printf(" LZDC1 - 12/4 encoding with a prime number index table.\n");
printf(" LZDC2 - 12/4 encoding with a 2-way prime number index table.\n");
printf(" LZRW1 - 12/4 encoding with a xor index function.\n");
printf(" LZRW2 - 12/4 encoding with a xor 2-way index function.\n");
printf("\n");
printf(" DBLS - DblSpace encoding with 512 byte chunks.\n");
printf(" DBLSOPT - DblSpace encoding with 512 byte chunks and an exhaustive match function.\n");
printf(" MRCF - DblSpace encoding with 2 character lookup table.\n");
printf(" MRCFOPT - DblSpace encoding an exhaustive match function.\n");
printf(" JMS - JMS encoding with binary tree function.\n");
printf(" JMSOPT - JMS encoding with an exhaustive match function.\n");
printf("\n");
printf(" LZ115 - 11/5 encoding with a xor index function.\n");
printf(" LZ115OPT - 11/5 encoding with an exhastive match function.\n");
printf("\n");
printf(" LZ11HALF - 11 and a half encoding with a xor index function.\n");
printf(" LZ11HALFOPT - 11 and a half encoding with an exhastive match function.\n");
printf("\n");
printf(" LZKM1 - 4/12 to 12/4 sliding encoding with a binary tree function.\n");
printf(" LZKM2 - 4/12 to 12/4 sliding encoding with a xor 2-way index function.\n");
printf(" LZKMOPT - 4/12 to 12/4 sliding encoding with an exhastive match function.\n");
printf("\n");
printf(" LZKM1512 - 4/12 to 12/4 sliding encoding with a binary tree function & 512 byte chunks.\n");
printf(" LZKM2512 - 4/12 to 12/4 sliding encoding with a xor 2-way index function & 512 byte chunks.\n");
printf(" LZKMOPT512 - 4/12 to 12/4 sliding encoding with an exhastive match function & 512 byte chunks.\n");
printf("\n");
printf(" the compressed output files (with /C) will in the same directory as the\n");
printf(" input file with .C<engine> appended. All compression but /DBLS is done with\n");
printf(" a 4KB size chunk.\n");
printf("\n");
printf("To Decompress a set of files\n");
printf("\n");
printf(" LZTEST [/V] /{D | d} /<format> {fileSpec}+\n");
printf("\n");
printf(" where <format> is either\n");
printf("\n");
printf(" 12.4 - 12/4 encoding.\n");
printf(" 11.5 - 11/5 encoding.\n");
printf(" 11HALF - 11 and a half encoding.\n");
printf(" LZKM - 4/12 to 12/4 sliding encoding.\n");
printf(" MRCF - DblSpace encoding.\n");
printf(" JMS - Jms encoding.\n");
printf("\n");
printf(" the decompressed output files (with /D) will in the same directory as the\n");
printf(" input file with .D<format> appended.\n");
printf("\n");
printf("{FileSpec} must denote specific files and not a directory.\n");
printf("\n");
printf("/S outputs statistics.\n");
printf("/V specifies verbose output.\n");
exit(0);
}
//
// To read and write compressed files we'll define a quick little format
// for compressed files of two ulongs followed by the compressed data.
// The first ulong is the uncompressed buffer size, and the second
// ulong is the size of the compressed buffer. This will be repeated
// until the data is exhausted.
//
VOID
CompressFile (
IN PCHAR FileName,
IN HANDLE InputHandle,
IN HANDLE OutputHandle
)
{
ULONG BytesRead;
ULONG CompressedBufferSize;
ULONG Temp;
if (Verbose) { printf("Compress \"%s\"", FileName); }
//
// Loop through reading in an uncompressed buffer until there is nothing
// more to read from the input file. For each input buffer we will
// compress the buffer, and then write out the uncompressed buffer size,
// the compressed buffer size and then the compressed buffer.
//
while (ReadFile(InputHandle, UncompressedBuffer, UncompressedBufferSize, &BytesRead, FALSE) && (BytesRead != 0)) {
CompressedBufferSize = (CompressRoutine)( UncompressedBuffer, BytesRead, CompressedBuffer, MAX_BUFFER_SIZE );
if (WriteOutputFile) {
(VOID) WriteFile(OutputHandle, &BytesRead, sizeof(ULONG), &Temp, FALSE);
(VOID) WriteFile(OutputHandle, &CompressedBufferSize, sizeof(ULONG), &Temp, FALSE);
(VOID) WriteFile(OutputHandle, CompressedBuffer, CompressedBufferSize, &Temp, FALSE);
}
TotalCompressedSize += CompressedBufferSize;
TotalUncompressedSize += BytesRead;
}
if (Verbose) { printf(" [OK]\n"); }
TotalFileCount += 1;
return;
}
VOID
DecompressFile (
IN PCHAR FileName,
IN HANDLE InputHandle,
IN HANDLE OutputHandle
)
{
ULONG CompressedBufferSize;
ULONG Temp;
if (Verbose) { printf("Decompress \"%s\"", FileName); }
//
// Loop through reading in the compressed file until there is nothing more to
// read. For each compressed buffer we will read in the uncompressed buffer size,
// the compressed buffer size, and then the compressed buffer, Making sure that
// all the reads returned the right number of bytes. Then we will decompress
// the buffer check it's length and write out the uncompressed buffer
//
while (ReadFile(InputHandle, &UncompressedBufferSize, sizeof(ULONG), &Temp, FALSE) && (Temp == sizeof(ULONG))) {
(VOID) ReadFile(InputHandle, &CompressedBufferSize, sizeof(ULONG), &Temp, FALSE);
if (Temp != sizeof(ULONG)) { printf(" [ERR0]\n"); /* exit(0); */ }
(VOID) ReadFile(InputHandle, CompressedBuffer, CompressedBufferSize, &Temp, FALSE);
if (Temp != CompressedBufferSize) { printf(" [ERR1]\n"); /* exit(0); */ }
Temp = (DecompressRoutine)( UncompressedBuffer, UncompressedBufferSize, CompressedBuffer, CompressedBufferSize );
if (Temp != UncompressedBufferSize) { printf(" [ERR2] Got %lx, Expected %lx\n", Temp, UncompressedBufferSize); /* exit(0); */ }
if (WriteOutputFile) {
(VOID) WriteFile(OutputHandle, UncompressedBuffer, UncompressedBufferSize, &Temp, FALSE);
}
TotalCompressedSize += CompressedBufferSize;
TotalUncompressedSize += UncompressedBufferSize;
}
if (Verbose) { printf(" [OK]\n"); }
TotalFileCount += 1;
return;
}
VOID
DoAction (
IN PCHAR DirectorySpec,
IN PCHAR DirectorySpecEnd
)
{
CHAR FileName[256];
HANDLE FindHandle;
HANDLE InputHandle;
HANDLE OutputHandle;
WIN32_FIND_DATA FindData;
//
// For every file in the directory that matches the file spec we will
// will open the file, create the output file, and do the action
//
if ((FindHandle = FindFirstFile( DirectorySpec, &FindData )) == INVALID_HANDLE_VALUE) { exit(0); }
do {
//
// Skip over directories
//
if (FindData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) { continue; }
//
// append the found file to the directory spec and open the input file
//
strcpy( DirectorySpecEnd, FindData.cFileName );
strcpy( FileName, DirectorySpec );
if ((InputHandle = CreateFile( DirectorySpec,
GENERIC_READ,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL,
OPEN_EXISTING,
0,
NULL )) == INVALID_HANDLE_VALUE) {
printf("Cannot open file \"%s\" (%d)\n", DirectorySpec, GetLastError());
exit(0);
}
//
// append the file extension to the input file name create the output file
// if we are to create one
//
if (WriteOutputFile) {
strcat( DirectorySpec, FileExtension );
if ((OutputHandle = CreateFile( DirectorySpec,
GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL,
CREATE_ALWAYS,
0,
NULL )) == INVALID_HANDLE_VALUE) {
printf("Cannot create file \"%s\" (%d)\n", DirectorySpec, GetLastError());
exit(0);
}
}
//
// Now either compress or decompress the file
//
(ActionRoutine)( FileName, InputHandle, OutputHandle );
//
// Close the file and go get the next file
//
CloseHandle( InputHandle );
if (WriteOutputFile) { CloseHandle( OutputHandle ); }
} while ( FindNextFile( FindHandle, &FindData ));
FindClose( FindHandle );
return;
}
VOID
__cdecl
main(
IN ULONG argc,
IN PCHAR argv[]
)
{
ULONG FileSpecIndex;
CHAR DirectorySpec[256];
PCHAR FileSpec;
ULONG StartTick;
ULONG StopTick;
//
// Check for the statistics switch
//
if ((argc > 1) && (!strcmp(argv[1],"/s") || !strcmp(argv[1],"/S"))) {
Statistics = TRUE;
argc--;
argv++;
}
//
// Check for the verbose switch
//
if ((argc > 1) && (!strcmp(argv[1],"/v") || !strcmp(argv[1],"/V"))) {
Verbose = TRUE;
argc--;
argv++;
}
//
// Check for the compress or decompress switch.
//
if ((argc > 1) && (!strcmp(argv[1],"/c") || !strcmp(argv[1],"/C"))) {
if (!strcmp(argv[1],"/c")) { WriteOutputFile = FALSE; } else { WriteOutputFile = TRUE; }
//
// Check for the minimum number of arguments for compression
//
if (argc < 4) { PrintSyntax(); }
if (!strcmp(argv[2],"/LZOPT")) {
ActionRoutine = CompressFile;
CompressRoutine = CompressLZOPT;
StatisticsRoutine = StatisticsLZOPT;
ResetStatistics = ResetStatisticsLZOPT;
strcpy( FileExtension, ".CLZOPT");
} else if (!strcmp(argv[2],"/LZNT1")) {
ActionRoutine = CompressFile;
CompressRoutine = CompressLZNT1;
StatisticsRoutine = StatisticsLZNT1;
ResetStatistics = ResetStatisticsLZNT1;
strcpy( FileExtension, ".CLZNT1");
} else if (!strcmp(argv[2],"/LZDC1")) {
ActionRoutine = CompressFile;
CompressRoutine = CompressLZDC;
StatisticsRoutine = StatisticsLZDC1;
ResetStatistics = ResetStatisticsLZDC1;
strcpy( FileExtension, ".CLZDC1");
MatchFunction = LZDC1FindMatch;
} else if (!strcmp(argv[2],"/LZDC2")) {
ActionRoutine = CompressFile;
CompressRoutine = CompressLZDC;
StatisticsRoutine = StatisticsLZDC2;
ResetStatistics = ResetStatisticsLZDC2;
strcpy( FileExtension, ".CLZDC2");
MatchFunction = LZDC2FindMatch;
} else if (!strcmp(argv[2],"/LZRW1")) {
ActionRoutine = CompressFile;
CompressRoutine = CompressLZRW;
StatisticsRoutine = StatisticsLZRW1;
ResetStatistics = ResetStatisticsLZRW1;
strcpy( FileExtension, ".CLZRW1");
MatchFunction = LZRW1FindMatch;
} else if (!strcmp(argv[2],"/LZRW2")) {
ActionRoutine = CompressFile;
CompressRoutine = CompressLZRW;
StatisticsRoutine = StatisticsLZRW2;
ResetStatistics = ResetStatisticsLZRW2;
strcpy( FileExtension, ".CLZRW2");
MatchFunction = LZRW2FindMatch;
} else if (!strcmp(argv[2],"/DBLS")) {
ActionRoutine = CompressFile;
CompressRoutine = CompressMRCF;
StatisticsRoutine = StatisticsMRCF;
ResetStatistics = ResetStatisticsMRCF;
strcpy( FileExtension, ".CDBLS");
MatchFunction = MrcfFindMatchStandard;
UncompressedBufferSize = 512;
} else if (!strcmp(argv[2],"/DBLSOPT")) {
ActionRoutine = CompressFile;
CompressRoutine = CompressMRCF;
StatisticsRoutine = StatisticsMRCF;
ResetStatistics = ResetStatisticsMRCF;
strcpy( FileExtension, ".CDBLSOPT");
MatchFunction = MrcfFindOptimalMatch;
UncompressedBufferSize = 512;
} else if (!strcmp(argv[2],"/MRCF")) {
ActionRoutine = CompressFile;
CompressRoutine = CompressMRCF;
StatisticsRoutine = StatisticsMRCF;
ResetStatistics = ResetStatisticsMRCF;
strcpy( FileExtension, ".CMRCF");
MatchFunction = MrcfFindMatchStandard;
} else if (!strcmp(argv[2],"/MRCFOPT")) {
ActionRoutine = CompressFile;
CompressRoutine = CompressMRCF;
StatisticsRoutine = StatisticsMRCFOPT;
ResetStatistics = ResetStatisticsMRCFOPT;
strcpy( FileExtension, ".CMRCFOPT");
MatchFunction = MrcfFindOptimalMatch;
} else if (!strcmp(argv[2],"/JMS")) {
ActionRoutine = CompressFile;
CompressRoutine = CompressJMS;
StatisticsRoutine = StatisticsJMS;
ResetStatistics = ResetStatisticsJMS;
strcpy( FileExtension, ".CJMS");
MatchFunction = JMSFindMatch;
} else if (!strcmp(argv[2],"/JMSOPT")) {
ActionRoutine = CompressFile;
CompressRoutine = CompressJMS;
StatisticsRoutine = StatisticsJMSOPT;
ResetStatistics = ResetStatisticsJMSOPT;
strcpy( FileExtension, ".CJMSOPT");
MatchFunction = JMSOPTFindMatch;
} else if (!strcmp(argv[2],"/LZ115")) {
ActionRoutine = CompressFile;
CompressRoutine = CompressLZ115;
StatisticsRoutine = StatisticsLZ115;
ResetStatistics = ResetStatisticsLZ115;
strcpy( FileExtension, ".CLZ115");
MatchFunction = LZ115FindMatch;
} else if (!strcmp(argv[2],"/LZ115OPT")) {
ActionRoutine = CompressFile;
CompressRoutine = CompressLZ115;
StatisticsRoutine = StatisticsLZ115OPT;
ResetStatistics = ResetStatisticsLZ115OPT;
strcpy( FileExtension, ".CLZ115OPT");
MatchFunction = LZ115OPTFindMatch;
} else if (!strcmp(argv[2],"/LZ11HALF")) {
ActionRoutine = CompressFile;
CompressRoutine = CompressLZ11HALF;
StatisticsRoutine = StatisticsLZ11HALF;
ResetStatistics = ResetStatisticsLZ11HALF;
strcpy( FileExtension, ".CLZ11HALF");
MatchFunction = LZ11HALFFindMatch;
} else if (!strcmp(argv[2],"/LZ11HALFOPT")) {
ActionRoutine = CompressFile;
CompressRoutine = CompressLZ11HALF;
StatisticsRoutine = StatisticsLZ11HALFOPT;
ResetStatistics = ResetStatisticsLZ11HALFOPT;
strcpy( FileExtension, ".CLZ11HALFOPT");
MatchFunction = LZ11HALFOPTFindMatch;
} else if (!strcmp(argv[2],"/LZKM1")) {
ActionRoutine = CompressFile;
CompressRoutine = CompressLZKM;
StatisticsRoutine = StatisticsLZKM1;
ResetStatistics = ResetStatisticsLZKM1;
strcpy( FileExtension, ".CLZKM1");
MatchFunction = LZKM1FindMatch;
} else if (!strcmp(argv[2],"/LZKM2")) {
ActionRoutine = CompressFile;
CompressRoutine = CompressLZKM;
StatisticsRoutine = StatisticsLZKM2;
ResetStatistics = ResetStatisticsLZKM2;
strcpy( FileExtension, ".CLZKM2");
MatchFunction = LZKM2FindMatch;
} else if (!strcmp(argv[2],"/LZKMOPT")) {
ActionRoutine = CompressFile;
CompressRoutine = CompressLZKM;
StatisticsRoutine = StatisticsLZKMOPT;
ResetStatistics = ResetStatisticsLZKMOPT;
strcpy( FileExtension, ".CLZKMOPT");
MatchFunction = LZKMOPTFindMatch;
} else if (!strcmp(argv[2],"/LZKM1512")) {
ActionRoutine = CompressFile;
CompressRoutine = CompressLZKM;
StatisticsRoutine = StatisticsLZKM1;
ResetStatistics = ResetStatisticsLZKM1;
strcpy( FileExtension, ".CLZKM1512");
MatchFunction = LZKM1FindMatch;
UncompressedBufferSize = 512;
} else if (!strcmp(argv[2],"/LZKM2512")) {
ActionRoutine = CompressFile;
CompressRoutine = CompressLZKM;
StatisticsRoutine = StatisticsLZKM2;
ResetStatistics = ResetStatisticsLZKM2;
strcpy( FileExtension, ".CLZKM2512");
MatchFunction = LZKM2FindMatch;
UncompressedBufferSize = 512;
} else if (!strcmp(argv[2],"/LZKMOPT512")) {
ActionRoutine = CompressFile;
CompressRoutine = CompressLZKM;
StatisticsRoutine = StatisticsLZKMOPT;
ResetStatistics = ResetStatisticsLZKMOPT;
strcpy( FileExtension, ".CLZKMOPT512");
MatchFunction = LZKMOPTFindMatch;
UncompressedBufferSize = 512;
} else { PrintSyntax(); };
//sscanf( argv[3], strncmp( argv[3], "0x", 2 ) ? "%ld" : "%lx", &UncompressedBufferSize );
FileSpecIndex = 3;
} else if ((argc > 1) && (!strcmp(argv[1],"/d") || !strcmp(argv[1],"/D"))) {
if (!strcmp(argv[1],"/d")) { WriteOutputFile = FALSE; } else { WriteOutputFile = TRUE; }
//
// Check for the minimum number of arguments for decompression
//
if (argc < 4) { PrintSyntax(); }
if (!strcmp(argv[2],"/12.4")) {
ActionRoutine = DecompressFile;
DecompressRoutine = DecompressLZRW;
StatisticsRoutine = StatisticsLZRW1;
ResetStatistics = ResetStatisticsLZRW1;
strcpy( FileExtension, ".D12.4");
} else if (!strcmp(argv[2],"/11.5")) {
ActionRoutine = DecompressFile;
DecompressRoutine = DecompressLZ115;
StatisticsRoutine = StatisticsLZ115;
ResetStatistics = ResetStatisticsLZ115;
strcpy( FileExtension, ".D11.5");
} else if (!strcmp(argv[2],"/11HALF")) {
ActionRoutine = DecompressFile;
DecompressRoutine = DecompressLZ11HALF;
StatisticsRoutine = StatisticsLZ11HALF;
ResetStatistics = ResetStatisticsLZ11HALF;
strcpy( FileExtension, ".D11HALF");
} else if (!strcmp(argv[2],"/LZKM")) {
ActionRoutine = DecompressFile;
DecompressRoutine = DecompressLZKM;
StatisticsRoutine = StatisticsLZKM1;
ResetStatistics = ResetStatisticsLZKM1;
strcpy( FileExtension, ".DLZKM");
} else if (!strcmp(argv[2],"/MRCF")) {
ActionRoutine = DecompressFile;
DecompressRoutine = DecompressMRCF;
StatisticsRoutine = StatisticsMRCF;
strcpy( FileExtension, ".DMRCF");
} else if (!strcmp(argv[2],"/JMS")) {
ActionRoutine = DecompressFile;
DecompressRoutine = DecompressJMS;
StatisticsRoutine = StatisticsJMS;
strcpy( FileExtension, ".DJMS");
} else { PrintSyntax(); };
FileSpecIndex = 3;
} else {
PrintSyntax();
}
if (Statistics) { ResetStatistics(); }
//
// Now do the action routine for each file spec
//
StartTick = GetTickCount();
for (FileSpecIndex; FileSpecIndex < argc; FileSpecIndex += 1) {
(VOID)GetFullPathName( argv[FileSpecIndex], 256, DirectorySpec, &FileSpec );
DoAction( DirectorySpec, FileSpec );
}
StopTick = GetTickCount();
//
// Now print the final statistics
//
if (Statistics) { StatisticsRoutine(); }
{
LONGLONG Percent = 100;
ULONG TotalTicks;
if (TotalUncompressedSize != 0) {
Percent = TotalCompressedSize * 100 / TotalUncompressedSize;
}
TotalTicks = StopTick - StartTick;
printf("\n");
printf("Total File Count = %8ld\n", (ULONG)TotalFileCount);
printf(" Compressed Size = %8ld\n", (ULONG)TotalCompressedSize);
printf(" Uncompressed Size = %8ld\n", (ULONG)TotalUncompressedSize);
printf(" = %8ld%%\n", (ULONG)Percent);
printf(" = %8ld ms\n", TotalTicks);
}
return;
}