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/*
7zMain.c
Test application for 7z Decoder
LZMA SDK 4.26 Copyright (c) 1999-2005 Igor Pavlov (2005-08-02)
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "7zCrc.h"
#include "7zIn.h"
#include "7zExtract.h"
typedef struct _CFileInStream
{
ISzInStream InStream;
FILE *File;
} CFileInStream;
#ifdef _LZMA_IN_CB
#define kBufferSize (1 << 12)
Byte g_Buffer[kBufferSize];
SZ_RESULT SzFileReadImp(void *object, void **buffer, size_t maxRequiredSize, size_t *processedSize)
{
CFileInStream *s = (CFileInStream *)object;
size_t processedSizeLoc;
if (maxRequiredSize > kBufferSize)
maxRequiredSize = kBufferSize;
processedSizeLoc = fread(g_Buffer, 1, maxRequiredSize, s->File);
*buffer = g_Buffer;
if (processedSize != 0)
*processedSize = processedSizeLoc;
return SZ_OK;
}
#else
SZ_RESULT SzFileReadImp(void *object, void *buffer, size_t size, size_t *processedSize)
{
CFileInStream *s = (CFileInStream *)object;
size_t processedSizeLoc = fread(buffer, 1, size, s->File);
if (processedSize != 0)
*processedSize = processedSizeLoc;
return SZ_OK;
}
#endif
SZ_RESULT SzFileSeekImp(void *object, CFileSize pos)
{
CFileInStream *s = (CFileInStream *)object;
int res = fseek(s->File, (long)pos, SEEK_SET);
if (res == 0)
return SZ_OK;
return SZE_FAIL;
}
void PrintError(char *sz)
{
printf("\nERROR: %s\n", sz);
}
int main(int numargs, char *args[])
{
CFileInStream archiveStream;
CArchiveDatabaseEx db;
SZ_RESULT res;
ISzAlloc allocImp;
ISzAlloc allocTempImp;
printf("\n7z ANSI-C Decoder 4.30 Copyright (c) 1999-2005 Igor Pavlov 2005-11-20\n");
if (numargs == 1)
{
printf(
"\nUsage: 7zDec <command> <archive_name>\n\n"
"<Commands>\n"
" e: Extract files from archive\n"
" l: List contents of archive\n"
" t: Test integrity of archive\n");
return 0;
}
if (numargs < 3)
{
PrintError("incorrect command");
return 1;
}
archiveStream.File = fopen(args[2], "rb");
if (archiveStream.File == 0)
{
PrintError("can not open input file");
return 1;
}
archiveStream.InStream.Read = SzFileReadImp;
archiveStream.InStream.Seek = SzFileSeekImp;
allocImp.Alloc = SzAlloc;
allocImp.Free = SzFree;
allocTempImp.Alloc = SzAllocTemp;
allocTempImp.Free = SzFreeTemp;
InitCrcTable();
SzArDbExInit(&db);
res = SzArchiveOpen(&archiveStream.InStream, &db, &allocImp, &allocTempImp);
if (res == SZ_OK)
{
char *command = args[1];
int listCommand = 0;
int testCommand = 0;
int extractCommand = 0;
if (strcmp(command, "l") == 0)
listCommand = 1;
if (strcmp(command, "t") == 0)
testCommand = 1;
else if (strcmp(command, "e") == 0)
extractCommand = 1;
if (listCommand)
{
UInt32 i;
for (i = 0; i < db.Database.NumFiles; i++)
{
CFileItem *f = db.Database.Files + i;
printf("%10d %s\n", (int)f->Size, f->Name);
}
}
else if (testCommand || extractCommand)
{
UInt32 i;
// if you need cache, use these 3 variables.
// if you use external function, you can make these variable as static.
UInt32 blockIndex = 0xFFFFFFFF; // it can have any value before first call (if outBuffer = 0)
Byte *outBuffer = 0; // it must be 0 before first call for each new archive.
size_t outBufferSize = 0; // it can have any value before first call (if outBuffer = 0)
printf("\n");
for (i = 0; i < db.Database.NumFiles; i++)
{
size_t offset;
size_t outSizeProcessed;
CFileItem *f = db.Database.Files + i;
if (f->IsDirectory)
printf("Directory ");
else
printf(testCommand ?
"Testing ":
"Extracting");
printf(" %s", f->Name);
if (f->IsDirectory)
{
printf("\n");
continue;
}
res = SzExtract(&archiveStream.InStream, &db, i,
&blockIndex, &outBuffer, &outBufferSize,
&offset, &outSizeProcessed,
&allocImp, &allocTempImp);
if (res != SZ_OK)
break;
if (!testCommand)
{
FILE *outputHandle;
UInt32 processedSize;
char *fileName = f->Name;
size_t nameLen = strlen(f->Name);
for (; nameLen > 0; nameLen--)
if (f->Name[nameLen - 1] == '/')
{
fileName = f->Name + nameLen;
break;
}
outputHandle = fopen(fileName, "wb+");
if (outputHandle == 0)
{
PrintError("can not open output file");
res = SZE_FAIL;
break;
}
processedSize = fwrite(outBuffer + offset, 1, outSizeProcessed, outputHandle);
if (processedSize != outSizeProcessed)
{
PrintError("can not write output file");
res = SZE_FAIL;
break;
}
if (fclose(outputHandle))
{
PrintError("can not close output file");
res = SZE_FAIL;
break;
}
}
printf("\n");
}
allocImp.Free(outBuffer);
}
else
{
PrintError("incorrect command");
res = SZE_FAIL;
}
}
SzArDbExFree(&db, allocImp.Free);
fclose(archiveStream.File);
if (res == SZ_OK)
{
printf("\nEverything is Ok\n");
return 0;
}
if (res == SZE_OUTOFMEMORY)
PrintError("can not allocate memory");
else
printf("\nERROR #%d\n", res);
return 1;
}
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