b0f22620a2
Update to latest quazip release. Change-Id: I03189ceeadbe3110a9420153d84bd5d33d5b663f
363 lines
11 KiB
C++
363 lines
11 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 <QtCore/QIODevice>
|
|
#if (QT_VERSION >= 0x050100)
|
|
#define QUAZIP_QSAVEFILE_BUG_WORKAROUND
|
|
#endif
|
|
#ifdef QUAZIP_QSAVEFILE_BUG_WORKAROUND
|
|
#include <QtCore/QSaveFile>
|
|
#endif
|
|
|
|
/* 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 call_zopen64 (const zlib_filefunc64_32_def* pfilefunc,voidpf file,int mode)
|
|
{
|
|
if (pfilefunc->zfile_func64.zopen64_file != NULL)
|
|
return (*(pfilefunc->zfile_func64.zopen64_file)) (pfilefunc->zfile_func64.opaque,file,mode);
|
|
else
|
|
{
|
|
return (*(pfilefunc->zopen32_file))(pfilefunc->zfile_func64.opaque,file,mode);
|
|
}
|
|
}
|
|
|
|
int call_zseek64 (const zlib_filefunc64_32_def* pfilefunc,voidpf filestream, ZPOS64_T offset, int origin)
|
|
{
|
|
if (pfilefunc->zfile_func64.zseek64_file != NULL)
|
|
return (*(pfilefunc->zfile_func64.zseek64_file)) (pfilefunc->zfile_func64.opaque,filestream,offset,origin);
|
|
else
|
|
{
|
|
uLong offsetTruncated = (uLong)offset;
|
|
if (offsetTruncated != offset)
|
|
return -1;
|
|
else
|
|
return (*(pfilefunc->zseek32_file))(pfilefunc->zfile_func64.opaque,filestream,offsetTruncated,origin);
|
|
}
|
|
}
|
|
|
|
ZPOS64_T call_ztell64 (const zlib_filefunc64_32_def* pfilefunc,voidpf filestream)
|
|
{
|
|
if (pfilefunc->zfile_func64.zseek64_file != NULL)
|
|
return (*(pfilefunc->zfile_func64.ztell64_file)) (pfilefunc->zfile_func64.opaque,filestream);
|
|
else
|
|
{
|
|
uLong tell_uLong = (*(pfilefunc->ztell32_file))(pfilefunc->zfile_func64.opaque,filestream);
|
|
if ((tell_uLong) == ((uLong)-1))
|
|
return (ZPOS64_T)-1;
|
|
else
|
|
return tell_uLong;
|
|
}
|
|
}
|
|
|
|
/// @cond internal
|
|
struct QIODevice_descriptor {
|
|
// Position only used for writing to sequential devices.
|
|
qint64 pos;
|
|
inline QIODevice_descriptor():
|
|
pos(0)
|
|
{}
|
|
};
|
|
/// @endcond
|
|
|
|
voidpf ZCALLBACK qiodevice_open_file_func (
|
|
voidpf opaque,
|
|
voidpf file,
|
|
int mode)
|
|
{
|
|
QIODevice_descriptor *d = reinterpret_cast<QIODevice_descriptor*>(opaque);
|
|
QIODevice *iodevice = reinterpret_cast<QIODevice*>(file);
|
|
QIODevice::OpenMode desiredMode;
|
|
if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
|
|
desiredMode = QIODevice::ReadOnly;
|
|
else if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
|
|
desiredMode = QIODevice::ReadWrite;
|
|
else if (mode & ZLIB_FILEFUNC_MODE_CREATE)
|
|
desiredMode = QIODevice::WriteOnly;
|
|
if (iodevice->isOpen()) {
|
|
if ((iodevice->openMode() & desiredMode) == desiredMode) {
|
|
if (desiredMode != QIODevice::WriteOnly
|
|
&& iodevice->isSequential()) {
|
|
// We can use sequential devices only for writing.
|
|
delete d;
|
|
return NULL;
|
|
} else {
|
|
if ((desiredMode & QIODevice::WriteOnly) != 0) {
|
|
// open for writing, need to seek existing device
|
|
if (!iodevice->isSequential()) {
|
|
iodevice->seek(0);
|
|
} else {
|
|
d->pos = iodevice->pos();
|
|
}
|
|
}
|
|
}
|
|
return iodevice;
|
|
} else {
|
|
delete d;
|
|
return NULL;
|
|
}
|
|
}
|
|
iodevice->open(desiredMode);
|
|
if (iodevice->isOpen()) {
|
|
if (desiredMode != QIODevice::WriteOnly && iodevice->isSequential()) {
|
|
// We can use sequential devices only for writing.
|
|
iodevice->close();
|
|
delete d;
|
|
return NULL;
|
|
} else {
|
|
return iodevice;
|
|
}
|
|
} else {
|
|
delete d;
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
|
|
uLong ZCALLBACK qiodevice_read_file_func (
|
|
voidpf opaque,
|
|
voidpf stream,
|
|
void* buf,
|
|
uLong size)
|
|
{
|
|
QIODevice_descriptor *d = reinterpret_cast<QIODevice_descriptor*>(opaque);
|
|
QIODevice *iodevice = reinterpret_cast<QIODevice*>(stream);
|
|
qint64 ret64 = iodevice->read((char*)buf,size);
|
|
uLong ret;
|
|
ret = (uLong) ret64;
|
|
if (ret64 != -1) {
|
|
d->pos += ret64;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
|
|
uLong ZCALLBACK qiodevice_write_file_func (
|
|
voidpf opaque,
|
|
voidpf stream,
|
|
const void* buf,
|
|
uLong size)
|
|
{
|
|
QIODevice_descriptor *d = reinterpret_cast<QIODevice_descriptor*>(opaque);
|
|
QIODevice *iodevice = reinterpret_cast<QIODevice*>(stream);
|
|
uLong ret;
|
|
qint64 ret64 = iodevice->write((char*)buf,size);
|
|
if (ret64 != -1) {
|
|
d->pos += ret64;
|
|
}
|
|
ret = (uLong) ret64;
|
|
return ret;
|
|
}
|
|
|
|
uLong ZCALLBACK qiodevice_tell_file_func (
|
|
voidpf opaque,
|
|
voidpf stream)
|
|
{
|
|
QIODevice_descriptor *d = reinterpret_cast<QIODevice_descriptor*>(opaque);
|
|
QIODevice *iodevice = reinterpret_cast<QIODevice*>(stream);
|
|
uLong ret;
|
|
qint64 ret64;
|
|
if (iodevice->isSequential()) {
|
|
ret64 = d->pos;
|
|
} else {
|
|
ret64 = iodevice->pos();
|
|
}
|
|
ret = static_cast<uLong>(ret64);
|
|
return ret;
|
|
}
|
|
|
|
ZPOS64_T ZCALLBACK qiodevice64_tell_file_func (
|
|
voidpf opaque,
|
|
voidpf stream)
|
|
{
|
|
QIODevice_descriptor *d = reinterpret_cast<QIODevice_descriptor*>(opaque);
|
|
QIODevice *iodevice = reinterpret_cast<QIODevice*>(stream);
|
|
qint64 ret;
|
|
if (iodevice->isSequential()) {
|
|
ret = d->pos;
|
|
} else {
|
|
ret = iodevice->pos();
|
|
}
|
|
return static_cast<ZPOS64_T>(ret);
|
|
}
|
|
|
|
int ZCALLBACK qiodevice_seek_file_func (
|
|
voidpf /*opaque UNUSED*/,
|
|
voidpf stream,
|
|
uLong offset,
|
|
int origin)
|
|
{
|
|
QIODevice *iodevice = reinterpret_cast<QIODevice*>(stream);
|
|
if (iodevice->isSequential()) {
|
|
if (origin == ZLIB_FILEFUNC_SEEK_END
|
|
&& offset == 0) {
|
|
// sequential devices are always at end (needed in mdAppend)
|
|
return 0;
|
|
} else {
|
|
qWarning("qiodevice_seek_file_func() called for sequential device");
|
|
return -1;
|
|
}
|
|
}
|
|
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 = !iodevice->seek(qiodevice_seek_result);
|
|
return ret;
|
|
}
|
|
|
|
int ZCALLBACK qiodevice64_seek_file_func (
|
|
voidpf /*opaque UNUSED*/,
|
|
voidpf stream,
|
|
ZPOS64_T offset,
|
|
int origin)
|
|
{
|
|
QIODevice *iodevice = reinterpret_cast<QIODevice*>(stream);
|
|
if (iodevice->isSequential()) {
|
|
if (origin == ZLIB_FILEFUNC_SEEK_END
|
|
&& offset == 0) {
|
|
// sequential devices are always at end (needed in mdAppend)
|
|
return 0;
|
|
} else {
|
|
qWarning("qiodevice_seek_file_func() called for sequential device");
|
|
return -1;
|
|
}
|
|
}
|
|
qint64 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 = !iodevice->seek(qiodevice_seek_result);
|
|
return ret;
|
|
}
|
|
|
|
int ZCALLBACK qiodevice_close_file_func (
|
|
voidpf opaque,
|
|
voidpf stream)
|
|
{
|
|
QIODevice_descriptor *d = reinterpret_cast<QIODevice_descriptor*>(opaque);
|
|
delete d;
|
|
QIODevice *device = reinterpret_cast<QIODevice*>(stream);
|
|
#ifdef QUAZIP_QSAVEFILE_BUG_WORKAROUND
|
|
// QSaveFile terribly breaks the is-a idiom:
|
|
// it IS a QIODevice, but it is NOT compatible with it: close() is private
|
|
QSaveFile *file = qobject_cast<QSaveFile*>(device);
|
|
if (file != NULL) {
|
|
// We have to call the ugly commit() instead:
|
|
return file->commit() ? 0 : -1;
|
|
}
|
|
#endif
|
|
device->close();
|
|
return 0;
|
|
}
|
|
|
|
int ZCALLBACK qiodevice_fakeclose_file_func (
|
|
voidpf opaque,
|
|
voidpf /*stream*/)
|
|
{
|
|
QIODevice_descriptor *d = reinterpret_cast<QIODevice_descriptor*>(opaque);
|
|
delete d;
|
|
return 0;
|
|
}
|
|
|
|
int ZCALLBACK qiodevice_error_file_func (
|
|
voidpf /*opaque UNUSED*/,
|
|
voidpf /*stream UNUSED*/)
|
|
{
|
|
// 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 = new QIODevice_descriptor;
|
|
}
|
|
|
|
void fill_qiodevice64_filefunc (
|
|
zlib_filefunc64_def* pzlib_filefunc_def)
|
|
{
|
|
// Open functions are the same for Qt.
|
|
pzlib_filefunc_def->zopen64_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->ztell64_file = qiodevice64_tell_file_func;
|
|
pzlib_filefunc_def->zseek64_file = qiodevice64_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 = new QIODevice_descriptor;
|
|
pzlib_filefunc_def->zfakeclose_file = qiodevice_fakeclose_file_func;
|
|
}
|
|
|
|
void fill_zlib_filefunc64_32_def_from_filefunc32(zlib_filefunc64_32_def* p_filefunc64_32,const zlib_filefunc_def* p_filefunc32)
|
|
{
|
|
p_filefunc64_32->zfile_func64.zopen64_file = NULL;
|
|
p_filefunc64_32->zopen32_file = p_filefunc32->zopen_file;
|
|
p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file;
|
|
p_filefunc64_32->zfile_func64.zread_file = p_filefunc32->zread_file;
|
|
p_filefunc64_32->zfile_func64.zwrite_file = p_filefunc32->zwrite_file;
|
|
p_filefunc64_32->zfile_func64.ztell64_file = NULL;
|
|
p_filefunc64_32->zfile_func64.zseek64_file = NULL;
|
|
p_filefunc64_32->zfile_func64.zclose_file = p_filefunc32->zclose_file;
|
|
p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file;
|
|
p_filefunc64_32->zfile_func64.opaque = p_filefunc32->opaque;
|
|
p_filefunc64_32->zfile_func64.zfakeclose_file = NULL;
|
|
p_filefunc64_32->zseek32_file = p_filefunc32->zseek_file;
|
|
p_filefunc64_32->ztell32_file = p_filefunc32->ztell_file;
|
|
}
|