This source file includes following definitions.
- win32_translate_open_mode
- win32_build_iowin
- win32_open64_file_func
- win32_open64_file_funcA
- win32_open64_file_funcW
- win32_open_file_func
- win32_read_file_func
- win32_write_file_func
- win32_tell_file_func
- win32_tell64_file_func
- win32_seek_file_func
- win32_seek64_file_func
- win32_close_file_func
- win32_error_file_func
- fill_win32_filefunc
- fill_win32_filefunc64
- fill_win32_filefunc64A
- fill_win32_filefunc64W
#include <stdlib.h>
#include "zlib.h"
#include "ioapi.h"
#include "iowin32.h"
#ifndef INVALID_HANDLE_VALUE
#define INVALID_HANDLE_VALUE (0xFFFFFFFF)
#endif
#ifndef INVALID_SET_FILE_POINTER
#define INVALID_SET_FILE_POINTER ((DWORD)-1)
#endif
voidpf ZCALLBACK win32_open_file_func OF((voidpf opaque, const char* filename, int mode));
uLong ZCALLBACK win32_read_file_func OF((voidpf opaque, voidpf stream, void* buf, uLong size));
uLong ZCALLBACK win32_write_file_func OF((voidpf opaque, voidpf stream, const void* buf, uLong size));
ZPOS64_T ZCALLBACK win32_tell64_file_func OF((voidpf opaque, voidpf stream));
long ZCALLBACK win32_seek64_file_func OF((voidpf opaque, voidpf stream, ZPOS64_T offset, int origin));
int ZCALLBACK win32_close_file_func OF((voidpf opaque, voidpf stream));
int ZCALLBACK win32_error_file_func OF((voidpf opaque, voidpf stream));
typedef struct
{
HANDLE hf;
int error;
} WIN32FILE_IOWIN;
static void win32_translate_open_mode(int mode,
DWORD* lpdwDesiredAccess,
DWORD* lpdwCreationDisposition,
DWORD* lpdwShareMode,
DWORD* lpdwFlagsAndAttributes)
{
*lpdwDesiredAccess = *lpdwShareMode = *lpdwFlagsAndAttributes = *lpdwCreationDisposition = 0;
if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
{
*lpdwDesiredAccess = GENERIC_READ;
*lpdwCreationDisposition = OPEN_EXISTING;
*lpdwShareMode = FILE_SHARE_READ;
}
else if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
{
*lpdwDesiredAccess = GENERIC_WRITE | GENERIC_READ;
*lpdwCreationDisposition = OPEN_EXISTING;
}
else if (mode & ZLIB_FILEFUNC_MODE_CREATE)
{
*lpdwDesiredAccess = GENERIC_WRITE | GENERIC_READ;
*lpdwCreationDisposition = CREATE_ALWAYS;
}
}
static voidpf win32_build_iowin(HANDLE hFile)
{
voidpf ret=NULL;
if ((hFile != NULL) && (hFile != INVALID_HANDLE_VALUE))
{
WIN32FILE_IOWIN w32fiow;
w32fiow.hf = hFile;
w32fiow.error = 0;
ret = malloc(sizeof(WIN32FILE_IOWIN));
if (ret==NULL)
CloseHandle(hFile);
else
*((WIN32FILE_IOWIN*)ret) = w32fiow;
}
return ret;
}
voidpf ZCALLBACK win32_open64_file_func (voidpf opaque,const void* filename,int mode)
{
const char* mode_fopen = NULL;
DWORD dwDesiredAccess,dwCreationDisposition,dwShareMode,dwFlagsAndAttributes ;
HANDLE hFile = NULL;
win32_translate_open_mode(mode,&dwDesiredAccess,&dwCreationDisposition,&dwShareMode,&dwFlagsAndAttributes);
if ((filename!=NULL) && (dwDesiredAccess != 0))
hFile = CreateFile((LPCTSTR)filename, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL);
return win32_build_iowin(hFile);
}
voidpf ZCALLBACK win32_open64_file_funcA (voidpf opaque,const void* filename,int mode)
{
const char* mode_fopen = NULL;
DWORD dwDesiredAccess,dwCreationDisposition,dwShareMode,dwFlagsAndAttributes ;
HANDLE hFile = NULL;
win32_translate_open_mode(mode,&dwDesiredAccess,&dwCreationDisposition,&dwShareMode,&dwFlagsAndAttributes);
if ((filename!=NULL) && (dwDesiredAccess != 0))
hFile = CreateFileA((LPCSTR)filename, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL);
return win32_build_iowin(hFile);
}
voidpf ZCALLBACK win32_open64_file_funcW (voidpf opaque,const void* filename,int mode)
{
const char* mode_fopen = NULL;
DWORD dwDesiredAccess,dwCreationDisposition,dwShareMode,dwFlagsAndAttributes ;
HANDLE hFile = NULL;
win32_translate_open_mode(mode,&dwDesiredAccess,&dwCreationDisposition,&dwShareMode,&dwFlagsAndAttributes);
if ((filename!=NULL) && (dwDesiredAccess != 0))
hFile = CreateFileW((LPCWSTR)filename, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL);
return win32_build_iowin(hFile);
}
voidpf ZCALLBACK win32_open_file_func (voidpf opaque,const char* filename,int mode)
{
const char* mode_fopen = NULL;
DWORD dwDesiredAccess,dwCreationDisposition,dwShareMode,dwFlagsAndAttributes ;
HANDLE hFile = NULL;
win32_translate_open_mode(mode,&dwDesiredAccess,&dwCreationDisposition,&dwShareMode,&dwFlagsAndAttributes);
if ((filename!=NULL) && (dwDesiredAccess != 0))
hFile = CreateFile((LPCTSTR)filename, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL);
return win32_build_iowin(hFile);
}
uLong ZCALLBACK win32_read_file_func (voidpf opaque, voidpf stream, void* buf,uLong size)
{
uLong ret=0;
HANDLE hFile = NULL;
if (stream!=NULL)
hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
if (hFile != NULL)
{
if (!ReadFile(hFile, buf, size, &ret, NULL))
{
DWORD dwErr = GetLastError();
if (dwErr == ERROR_HANDLE_EOF)
dwErr = 0;
((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
}
}
return ret;
}
uLong ZCALLBACK win32_write_file_func (voidpf opaque,voidpf stream,const void* buf,uLong size)
{
uLong ret=0;
HANDLE hFile = NULL;
if (stream!=NULL)
hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
if (hFile != NULL)
{
if (!WriteFile(hFile, buf, size, &ret, NULL))
{
DWORD dwErr = GetLastError();
if (dwErr == ERROR_HANDLE_EOF)
dwErr = 0;
((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
}
}
return ret;
}
long ZCALLBACK win32_tell_file_func (voidpf opaque,voidpf stream)
{
long ret=-1;
HANDLE hFile = NULL;
if (stream!=NULL)
hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
if (hFile != NULL)
{
DWORD dwSet = SetFilePointer(hFile, 0, NULL, FILE_CURRENT);
if (dwSet == INVALID_SET_FILE_POINTER)
{
DWORD dwErr = GetLastError();
((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
ret = -1;
}
else
ret=(long)dwSet;
}
return ret;
}
ZPOS64_T ZCALLBACK win32_tell64_file_func (voidpf opaque, voidpf stream)
{
ZPOS64_T ret= (ZPOS64_T)-1;
HANDLE hFile = NULL;
if (stream!=NULL)
hFile = ((WIN32FILE_IOWIN*)stream)->hf;
if (hFile)
{
LARGE_INTEGER li;
li.QuadPart = 0;
li.u.LowPart = SetFilePointer(hFile, li.u.LowPart, &li.u.HighPart, FILE_CURRENT);
if ( (li.LowPart == 0xFFFFFFFF) && (GetLastError() != NO_ERROR))
{
DWORD dwErr = GetLastError();
((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
ret = (ZPOS64_T)-1;
}
else
ret=li.QuadPart;
}
return ret;
}
long ZCALLBACK win32_seek_file_func (voidpf opaque,voidpf stream,uLong offset,int origin)
{
DWORD dwMoveMethod=0xFFFFFFFF;
HANDLE hFile = NULL;
long ret=-1;
if (stream!=NULL)
hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
switch (origin)
{
case ZLIB_FILEFUNC_SEEK_CUR :
dwMoveMethod = FILE_CURRENT;
break;
case ZLIB_FILEFUNC_SEEK_END :
dwMoveMethod = FILE_END;
break;
case ZLIB_FILEFUNC_SEEK_SET :
dwMoveMethod = FILE_BEGIN;
break;
default: return -1;
}
if (hFile != NULL)
{
DWORD dwSet = SetFilePointer(hFile, offset, NULL, dwMoveMethod);
if (dwSet == INVALID_SET_FILE_POINTER)
{
DWORD dwErr = GetLastError();
((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
ret = -1;
}
else
ret=0;
}
return ret;
}
long ZCALLBACK win32_seek64_file_func (voidpf opaque, voidpf stream,ZPOS64_T offset,int origin)
{
DWORD dwMoveMethod=0xFFFFFFFF;
HANDLE hFile = NULL;
long ret=-1;
if (stream!=NULL)
hFile = ((WIN32FILE_IOWIN*)stream)->hf;
switch (origin)
{
case ZLIB_FILEFUNC_SEEK_CUR :
dwMoveMethod = FILE_CURRENT;
break;
case ZLIB_FILEFUNC_SEEK_END :
dwMoveMethod = FILE_END;
break;
case ZLIB_FILEFUNC_SEEK_SET :
dwMoveMethod = FILE_BEGIN;
break;
default: return -1;
}
if (hFile)
{
LARGE_INTEGER* li = (LARGE_INTEGER*)&offset;
DWORD dwSet = SetFilePointer(hFile, li->u.LowPart, &li->u.HighPart, dwMoveMethod);
if (dwSet == INVALID_SET_FILE_POINTER)
{
DWORD dwErr = GetLastError();
((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
ret = -1;
}
else
ret=0;
}
return ret;
}
int ZCALLBACK win32_close_file_func (voidpf opaque, voidpf stream)
{
int ret=-1;
if (stream!=NULL)
{
HANDLE hFile;
hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
if (hFile != NULL)
{
CloseHandle(hFile);
ret=0;
}
free(stream);
}
return ret;
}
int ZCALLBACK win32_error_file_func (voidpf opaque,voidpf stream)
{
int ret=-1;
if (stream!=NULL)
{
ret = ((WIN32FILE_IOWIN*)stream) -> error;
}
return ret;
}
void fill_win32_filefunc (zlib_filefunc_def* pzlib_filefunc_def)
{
pzlib_filefunc_def->zopen_file = win32_open_file_func;
pzlib_filefunc_def->zread_file = win32_read_file_func;
pzlib_filefunc_def->zwrite_file = win32_write_file_func;
pzlib_filefunc_def->ztell_file = win32_tell_file_func;
pzlib_filefunc_def->zseek_file = win32_seek_file_func;
pzlib_filefunc_def->zclose_file = win32_close_file_func;
pzlib_filefunc_def->zerror_file = win32_error_file_func;
pzlib_filefunc_def->opaque = NULL;
}
void fill_win32_filefunc64(zlib_filefunc64_def* pzlib_filefunc_def)
{
pzlib_filefunc_def->zopen64_file = win32_open64_file_func;
pzlib_filefunc_def->zread_file = win32_read_file_func;
pzlib_filefunc_def->zwrite_file = win32_write_file_func;
pzlib_filefunc_def->ztell64_file = win32_tell64_file_func;
pzlib_filefunc_def->zseek64_file = win32_seek64_file_func;
pzlib_filefunc_def->zclose_file = win32_close_file_func;
pzlib_filefunc_def->zerror_file = win32_error_file_func;
pzlib_filefunc_def->opaque = NULL;
}
void fill_win32_filefunc64A(zlib_filefunc64_def* pzlib_filefunc_def)
{
pzlib_filefunc_def->zopen64_file = win32_open64_file_funcA;
pzlib_filefunc_def->zread_file = win32_read_file_func;
pzlib_filefunc_def->zwrite_file = win32_write_file_func;
pzlib_filefunc_def->ztell64_file = win32_tell64_file_func;
pzlib_filefunc_def->zseek64_file = win32_seek64_file_func;
pzlib_filefunc_def->zclose_file = win32_close_file_func;
pzlib_filefunc_def->zerror_file = win32_error_file_func;
pzlib_filefunc_def->opaque = NULL;
}
void fill_win32_filefunc64W(zlib_filefunc64_def* pzlib_filefunc_def)
{
pzlib_filefunc_def->zopen64_file = win32_open64_file_funcW;
pzlib_filefunc_def->zread_file = win32_read_file_func;
pzlib_filefunc_def->zwrite_file = win32_write_file_func;
pzlib_filefunc_def->ztell64_file = win32_tell64_file_func;
pzlib_filefunc_def->zseek64_file = win32_seek64_file_func;
pzlib_filefunc_def->zclose_file = win32_close_file_func;
pzlib_filefunc_def->zerror_file = win32_error_file_func;
pzlib_filefunc_def->opaque = NULL;
}