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/*
win32/win32i64.c - Zip 3
Copyright (c) 1990-2007 Info-ZIP. All rights reserved.
See the accompanying file LICENSE, version 2005-Feb-10 or later
(the contents of which are also included in zip.h) for terms of use.
If, for some reason, all these files are missing, the Info-ZIP license
also may be found at: ftp://ftp.info-zip.org/pub/infozip/license.html
*/
#include "../zip.h"
#include <stdlib.h>
#include <stdio.h>
#include <limits.h>
#include <time.h>
#include <ctype.h>
#include <windows.h>
/* for LARGE_FILE_SUPPORT but may not be needed */
#include <io.h>
/* --------------------------------------------------- */
/* Large File Support
*
* Initial functions by E. Gordon and R. Nausedat
* 9/10/2003
*
* These implement 64-bit file support for Windows. The
* defines and headers are in win32/osdep.h.
*
* These moved from win32.c by Mike White to avoid conflicts
* in WiZ of same name functions in UnZip and Zip libraries.
* 9/25/04 EG
*/
#if defined(LARGE_FILE_SUPPORT) && !defined(__CYGWIN__)
/* 64-bit buffered ftello
*
* Win32 does not provide a 64-bit buffered
* ftell (in the published api anyway) so below provides
* hopefully close version.
* We have not gotten _telli64 to work with buffered
* streams. Below cheats by using fgetpos improperly and
* may not work on other ports.
*/
zoff_t zftello(stream)
FILE *stream;
{
fpos_t fpos = 0;
if (fgetpos(stream, &fpos) != 0) {
return -1L;
} else {
return fpos;
}
}
/* 64-bit buffered fseeko
*
* Win32 does not provide a 64-bit buffered
* fseeko so use _lseeki64 and fflush. Note
* that SEEK_CUR can lose track of location
* if fflush is done between the last buffered
* io and this call.
*/
int zfseeko(stream, offset, origin)
FILE *stream;
zoff_t offset;
int origin;
{
zoff_t location;
location = zftello(stream);
fflush(stream);
if (origin == SEEK_CUR) {
/* instead of synching up lseek easier just to figure and
use an absolute offset */
offset = location + offset;
location = _lseeki64(fileno(stream), offset, SEEK_SET);
} else {
location = _lseeki64(fileno(stream), offset, origin);
}
if (location == -1L) {
return -1L;
} else {
return 0;
}
}
#endif /* Win32 LARGE_FILE_SUPPORT */
#if 0
FILE* zfopen(filename,mode)
char *filename;
char *mode;
{
FILE* fTemp;
fTemp = fopen(filename,mode);
if( fTemp == NULL )
return NULL;
/* sorry, could not make VC60 and its rtl work properly without setting the file buffer to NULL. the */
/* problem seems to be _telli64 which seems to return the max stream position, comments are welcome */
setbuf(fTemp,NULL);
return fTemp;
}
#endif
/* --------------------------------------------------- */
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