/src/libtomahawk/thirdparty/quazip/quazip/qioapi.cpp
http://github.com/tomahawk-player/tomahawk · C++ · 142 lines · 114 code · 18 blank · 10 comment · 6 complexity · d0a9e0ec7b7a71ca7f6932f80423d1ff MD5 · raw file
- /* 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(iodevice->isSequential())
- return NULL;
- 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())
- 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)
- {
- return !((QIODevice*)stream)->errorString().isEmpty();
- }
- 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;
- }