misc/quazip/qioapi.cpp
author koda
Fri, 06 Jan 2012 01:51:04 +0100
changeset 6551 a2f39cb9af62
parent 5752 ea95ee97c805
child 7889 57b117d441b9
permissions -rw-r--r--
fix a couple of loose ends: sdl_mixer is informed of that OGG is provided by Tremor with its own macro, there is no more a segfault on Tremor cleanup, added new event type and timestamp entry for SDL, removed spurious characters from the japanese translation, uSound errors now are output with SDLTry, uSound doesn't need sound preloading any more

/* 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;
}