mirror of
https://github.com/MultiMC/MultiMC5.git
synced 2024-12-26 00:15:16 +00:00
147 lines
3.3 KiB
C++
147 lines
3.3 KiB
C++
/* ioapi.c -- IO base function header for compress/uncompress .zip
|
|
files using zlib + zip or unzip API
|
|
|
|
Version 1.01e, February 12th, 2005
|
|
|
|
Copyright (C) 1998-2005 Gilles Vollant
|
|
|
|
Modified by Sergey A. Tachenov to integrate with Qt.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "zlib.h"
|
|
#include "ioapi.h"
|
|
#include "quazip_global.h"
|
|
#include <QIODevice>
|
|
|
|
|
|
/* I've found an old Unix (a SunOS 4.1.3_U1) without all SEEK_* defined.... */
|
|
|
|
#ifndef SEEK_CUR
|
|
#define SEEK_CUR 1
|
|
#endif
|
|
|
|
#ifndef SEEK_END
|
|
#define SEEK_END 2
|
|
#endif
|
|
|
|
#ifndef SEEK_SET
|
|
#define SEEK_SET 0
|
|
#endif
|
|
|
|
voidpf ZCALLBACK qiodevice_open_file_func (
|
|
voidpf opaque UNUSED,
|
|
voidpf file,
|
|
int mode)
|
|
{
|
|
QIODevice *iodevice = reinterpret_cast<QIODevice*>(file);
|
|
if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
|
|
iodevice->open(QIODevice::ReadOnly);
|
|
else
|
|
if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
|
|
iodevice->open(QIODevice::ReadWrite);
|
|
else
|
|
if (mode & ZLIB_FILEFUNC_MODE_CREATE)
|
|
iodevice->open(QIODevice::WriteOnly);
|
|
|
|
if (iodevice->isOpen()) {
|
|
if (iodevice->isSequential()) {
|
|
iodevice->close();
|
|
return NULL;
|
|
} else {
|
|
return iodevice;
|
|
}
|
|
} else
|
|
return NULL;
|
|
}
|
|
|
|
|
|
uLong ZCALLBACK qiodevice_read_file_func (
|
|
voidpf opaque UNUSED,
|
|
voidpf stream,
|
|
void* buf,
|
|
uLong size)
|
|
{
|
|
uLong ret;
|
|
ret = (uLong)((QIODevice*)stream)->read((char*)buf,size);
|
|
return ret;
|
|
}
|
|
|
|
|
|
uLong ZCALLBACK qiodevice_write_file_func (
|
|
voidpf opaque UNUSED,
|
|
voidpf stream,
|
|
const void* buf,
|
|
uLong size)
|
|
{
|
|
uLong ret;
|
|
ret = (uLong)((QIODevice*)stream)->write((char*)buf,size);
|
|
return ret;
|
|
}
|
|
|
|
uLong ZCALLBACK qiodevice_tell_file_func (
|
|
voidpf opaque UNUSED,
|
|
voidpf stream)
|
|
{
|
|
uLong ret;
|
|
ret = ((QIODevice*)stream)->pos();
|
|
return ret;
|
|
}
|
|
|
|
int ZCALLBACK qiodevice_seek_file_func (
|
|
voidpf opaque UNUSED,
|
|
voidpf stream,
|
|
uLong offset,
|
|
int origin)
|
|
{
|
|
uLong qiodevice_seek_result=0;
|
|
int ret;
|
|
switch (origin)
|
|
{
|
|
case ZLIB_FILEFUNC_SEEK_CUR :
|
|
qiodevice_seek_result = ((QIODevice*)stream)->pos() + offset;
|
|
break;
|
|
case ZLIB_FILEFUNC_SEEK_END :
|
|
qiodevice_seek_result = ((QIODevice*)stream)->size() - offset;
|
|
break;
|
|
case ZLIB_FILEFUNC_SEEK_SET :
|
|
qiodevice_seek_result = offset;
|
|
break;
|
|
default: return -1;
|
|
}
|
|
ret = !((QIODevice*)stream)->seek(qiodevice_seek_result);
|
|
return ret;
|
|
}
|
|
|
|
int ZCALLBACK qiodevice_close_file_func (
|
|
voidpf opaque UNUSED,
|
|
voidpf stream)
|
|
{
|
|
((QIODevice*)stream)->close();
|
|
return 0;
|
|
}
|
|
|
|
int ZCALLBACK qiodevice_error_file_func (
|
|
voidpf opaque UNUSED,
|
|
voidpf stream)
|
|
{
|
|
// can't check for error due to the QIODevice API limitation
|
|
return 0;
|
|
}
|
|
|
|
void fill_qiodevice_filefunc (
|
|
zlib_filefunc_def* pzlib_filefunc_def)
|
|
{
|
|
pzlib_filefunc_def->zopen_file = qiodevice_open_file_func;
|
|
pzlib_filefunc_def->zread_file = qiodevice_read_file_func;
|
|
pzlib_filefunc_def->zwrite_file = qiodevice_write_file_func;
|
|
pzlib_filefunc_def->ztell_file = qiodevice_tell_file_func;
|
|
pzlib_filefunc_def->zseek_file = qiodevice_seek_file_func;
|
|
pzlib_filefunc_def->zclose_file = qiodevice_close_file_func;
|
|
pzlib_filefunc_def->zerror_file = qiodevice_error_file_func;
|
|
pzlib_filefunc_def->opaque = NULL;
|
|
}
|