+
−/* 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())
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−        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
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−    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;
+
−}