SzArchive::~SzArchive()
{
if (lookStream.buf != NULL)
{
File_Close(&archiveStream.file);
ISzAlloc_Free(&g_Alloc, lookStream.buf);
if (out_buffer != NULL)
ISzAlloc_Free(&g_Alloc, out_buffer);
SzArEx_Free(&szarchive, &g_Alloc);
}
}
SRes Xzs_ReadBackward(CXzs *p, ILookInStream *stream, Int64 *startOffset, ICompressProgress *progress, ISzAllocPtr alloc)
{
Int64 endOffset = 0;
RINOK(ILookInStream_Seek(stream, &endOffset, SZ_SEEK_END));
*startOffset = endOffset;
for (;;)
{
CXzStream st;
SRes res;
Xz_Construct(&st);
res = Xz_ReadBackward(&st, stream, startOffset, alloc);
st.startOffset = *startOffset;
RINOK(res);
if (p->num == p->numAllocated)
{
size_t newNum = p->num + p->num / 4 + 1;
Byte *data = (Byte *)ISzAlloc_Alloc(alloc, newNum * sizeof(CXzStream));
if (!data)
return SZ_ERROR_MEM;
p->numAllocated = newNum;
if (p->num != 0)
memcpy(data, p->streams, p->num * sizeof(CXzStream));
ISzAlloc_Free(alloc, p->streams);
p->streams = (CXzStream *)data;
}
p->streams[p->num++] = st;
if (*startOffset == 0)
break;
RINOK(LookInStream_SeekTo(stream, *startOffset));
if (progress && ICompressProgress_Progress(progress, endOffset - *startOffset, (UInt64)(Int64)-1) != SZ_OK)
return SZ_ERROR_PROGRESS;
}
return SZ_OK;
}
void Xzs_Free(CXzs *p, ISzAllocPtr alloc)
{
size_t i;
for (i = 0; i < p->num; i++)
Xz_Free(&p->streams[i], alloc);
ISzAlloc_Free(alloc, p->streams);
p->num = p->numAllocated = 0;
p->streams = 0;
}
static SRes Xz_ReadIndex(CXzStream *p, ILookInStream *stream, UInt64 indexSize, ISzAllocPtr alloc)
{
SRes res;
size_t size;
Byte *buf;
if (indexSize > ((UInt32)1 << 31))
return SZ_ERROR_UNSUPPORTED;
size = (size_t)indexSize;
if (size != indexSize)
return SZ_ERROR_UNSUPPORTED;
buf = (Byte *)ISzAlloc_Alloc(alloc, size);
if (!buf)
return SZ_ERROR_MEM;
res = LookInStream_Read2(stream, buf, size, SZ_ERROR_UNSUPPORTED);
if (res == SZ_OK)
res = Xz_ReadIndex2(p, buf, size, alloc);
ISzAlloc_Free(alloc, buf);
return res;
}
int MY_CDECL main(int numargs, char *args[])
{
ISzAlloc allocImp;
ISzAlloc allocTempImp;
CFileInStream archiveStream;
CLookToRead2 lookStream;
CSzArEx db;
SRes res;
UInt16 *temp = NULL;
size_t tempSize = 0;
// UInt32 parents[NUM_PARENTS_MAX];
Print("\n7z Decoder " MY_VERSION_CPU " : " MY_COPYRIGHT_DATE "\n\n");
if (numargs == 1)
{
Print(
"Usage: 7zDec <command> <archive_name>\n\n"
"<Commands>\n"
" e: Extract files from archive (without using directory names)\n"
" l: List contents of archive\n"
" t: Test integrity of archive\n"
" x: eXtract files with full paths\n");
return 0;
}
if (numargs < 3)
{
PrintError("incorrect command");
return 1;
}
#if defined(_WIN32) && !defined(USE_WINDOWS_FILE) && !defined(UNDER_CE)
g_FileCodePage = AreFileApisANSI() ? CP_ACP : CP_OEMCP;
#endif
allocImp = g_Alloc;
allocTempImp = g_Alloc;
#ifdef UNDER_CE
if (InFile_OpenW(&archiveStream.file, L"\test.7z"))
#else
if (InFile_Open(&archiveStream.file, args[2]))
#endif
{
PrintError("can not open input file");
return 1;
}
FileInStream_CreateVTable(&archiveStream);
LookToRead2_CreateVTable(&lookStream, False);
lookStream.buf = NULL;
res = SZ_OK;
{
lookStream.buf = (Byte *)ISzAlloc_Alloc(&allocImp, kInputBufSize);
if (!lookStream.buf)
res = SZ_ERROR_MEM;
else
{
lookStream.bufSize = kInputBufSize;
lookStream.realStream = &archiveStream.vt;
LookToRead2_Init(&lookStream);
}
}
CrcGenerateTable();
SzArEx_Init(&db);
if (res == SZ_OK)
{
res = SzArEx_Open(&db, &lookStream.vt, &allocImp, &allocTempImp);
}
if (res == SZ_OK)
{
char *command = args[1];
int listCommand = 0, testCommand = 0, fullPaths = 0;
if (strcmp(command, "l") == 0) listCommand = 1;
else if (strcmp(command, "t") == 0) testCommand = 1;
else if (strcmp(command, "e") == 0) { }
else if (strcmp(command, "x") == 0) { fullPaths = 1; }
else
{
PrintError("incorrect command");
res = SZ_ERROR_FAIL;
}
if (res == SZ_OK)
{
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) */
for (i = 0; i < db.NumFiles; i++)
{
size_t offset = 0;
size_t outSizeProcessed = 0;
// const CSzFileItem *f = db.Files + i;
size_t len;
unsigned isDir = SzArEx_IsDir(&db, i);
if (listCommand == 0 && isDir && !fullPaths)
continue;
len = SzArEx_GetFileNameUtf16(&db, i, NULL);
// len = SzArEx_GetFullNameLen(&db, i);
if (len > tempSize)
{
SzFree(NULL, temp);
tempSize = len;
temp = (UInt16 *)SzAlloc(NULL, tempSize * sizeof(temp[0]));
if (!temp)
{
res = SZ_ERROR_MEM;
break;
}
}
SzArEx_GetFileNameUtf16(&db, i, temp);
/*
if (SzArEx_GetFullNameUtf16_Back(&db, i, temp + len) != temp)
{
res = SZ_ERROR_FAIL;
break;
}
*/
if (listCommand)
{
char attr[8], s[32], t[32];
UInt64 fileSize;
GetAttribString(SzBitWithVals_Check(&db.Attribs, i) ? db.Attribs.Vals[i] : 0, isDir, attr);
fileSize = SzArEx_GetFileSize(&db, i);
UInt64ToStr(fileSize, s, 10);
if (SzBitWithVals_Check(&db.MTime, i))
ConvertFileTimeToString(&db.MTime.Vals[i], t);
else
{
size_t j;
for (j = 0; j < 19; j++)
t[j] = ' ';
t[j] = '\0';
}
Print(t);
Print(" ");
Print(attr);
Print(" ");
Print(s);
Print(" ");
res = PrintString(temp);
if (res != SZ_OK)
break;
if (isDir)
Print("/");
PrintLF();
continue;
}
Print(testCommand ?
"Testing ":
"Extracting ");
res = PrintString(temp);
if (res != SZ_OK)
break;
if (isDir)
Print("/");
else
{
res = SzArEx_Extract(&db, &lookStream.vt, i,
&blockIndex, &outBuffer, &outBufferSize,
&offset, &outSizeProcessed,
&allocImp, &allocTempImp);
if (res != SZ_OK)
break;
}
if (!testCommand)
{
CSzFile outFile;
size_t processedSize;
size_t j;
UInt16 *name = (UInt16 *)temp;
const UInt16 *destPath = (const UInt16 *)name;
for (j = 0; name[j] != 0; j++)
if (name[j] == '/')
{
if (fullPaths)
{
name[j] = 0;
MyCreateDir(name);
name[j] = CHAR_PATH_SEPARATOR;
}
else
destPath = name + j + 1;
}
if (isDir)
{
MyCreateDir(destPath);
PrintLF();
continue;
}
else if (OutFile_OpenUtf16(&outFile, destPath))
{
PrintError("can not open output file");
res = SZ_ERROR_FAIL;
break;
}
processedSize = outSizeProcessed;
if (File_Write(&outFile, outBuffer + offset, &processedSize) != 0 || processedSize != outSizeProcessed)
{
PrintError("can not write output file");
res = SZ_ERROR_FAIL;
break;
}
#ifdef USE_WINDOWS_FILE
{
FILETIME mtime, ctime;
FILETIME *mtimePtr = NULL;
FILETIME *ctimePtr = NULL;
if (SzBitWithVals_Check(&db.MTime, i))
{
const CNtfsFileTime *t = &db.MTime.Vals[i];
mtime.dwLowDateTime = (DWORD)(t->Low);
mtime.dwHighDateTime = (DWORD)(t->High);
mtimePtr = &mtime;
}
if (SzBitWithVals_Check(&db.CTime, i))
{
const CNtfsFileTime *t = &db.CTime.Vals[i];
ctime.dwLowDateTime = (DWORD)(t->Low);
ctime.dwHighDateTime = (DWORD)(t->High);
ctimePtr = &ctime;
}
if (mtimePtr || ctimePtr)
SetFileTime(outFile.handle, ctimePtr, NULL, mtimePtr);
}
#endif
if (File_Close(&outFile))
{
PrintError("can not close output file");
res = SZ_ERROR_FAIL;
break;
}
#ifdef USE_WINDOWS_FILE
if (SzBitWithVals_Check(&db.Attribs, i))
{
UInt32 attrib = db.Attribs.Vals[i];
/* p7zip stores posix attributes in high 16 bits and adds 0x8000 as marker.
We remove posix bits, if we detect posix mode field */
if ((attrib & 0xF0000000) != 0)
attrib &= 0x7FFF;
SetFileAttributesW((LPCWSTR)destPath, attrib);
}
#endif
}
PrintLF();
}
ISzAlloc_Free(&allocImp, outBuffer);
}
}
SzFree(NULL, temp);
SzArEx_Free(&db, &allocImp);
ISzAlloc_Free(&allocImp, lookStream.buf);
File_Close(&archiveStream.file);
if (res == SZ_OK)
{
Print("\nEverything is Ok\n");
return 0;
}
if (res == SZ_ERROR_UNSUPPORTED)
PrintError("decoder doesn't support this archive");
else if (res == SZ_ERROR_MEM)
PrintError("can not allocate memory");
else if (res == SZ_ERROR_CRC)
PrintError("CRC error");
else
{
char s[32];
UInt64ToStr(res, s, 0);
PrintError(s);
}
return 1;
}
