5752
+ − 1 /* ioapi.c -- IO base function header for compress/uncompress .zip
+ − 2 files using zlib + zip or unzip API
+ − 3
+ − 4 Version 1.01e, February 12th, 2005
+ − 5
+ − 6 Copyright (C) 1998-2005 Gilles Vollant
+ − 7
+ − 8 Modified by Sergey A. Tachenov to integrate with Qt.
+ − 9 */
+ − 10
+ − 11 #include <stdio.h>
+ − 12 #include <stdlib.h>
+ − 13 #include <string.h>
+ − 14
+ − 15 #include "zlib.h"
+ − 16 #include "ioapi.h"
+ − 17 #include "quazip_global.h"
+ − 18 #include <QIODevice>
+ − 19
+ − 20
+ − 21 /* I've found an old Unix (a SunOS 4.1.3_U1) without all SEEK_* defined.... */
+ − 22
+ − 23 #ifndef SEEK_CUR
+ − 24 #define SEEK_CUR 1
+ − 25 #endif
+ − 26
+ − 27 #ifndef SEEK_END
+ − 28 #define SEEK_END 2
+ − 29 #endif
+ − 30
+ − 31 #ifndef SEEK_SET
+ − 32 #define SEEK_SET 0
+ − 33 #endif
+ − 34
+ − 35 voidpf ZCALLBACK qiodevice_open_file_func (
+ − 36 voidpf opaque UNUSED,
+ − 37 voidpf file,
+ − 38 int mode)
+ − 39 {
+ − 40 QIODevice *iodevice = reinterpret_cast<QIODevice*>(file);
+ − 41 if(iodevice->isSequential())
+ − 42 return NULL;
+ − 43 if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
+ − 44 iodevice->open(QIODevice::ReadOnly);
+ − 45 else
+ − 46 if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
+ − 47 iodevice->open(QIODevice::ReadWrite);
+ − 48 else
+ − 49 if (mode & ZLIB_FILEFUNC_MODE_CREATE)
+ − 50 iodevice->open(QIODevice::WriteOnly);
+ − 51
+ − 52 if(iodevice->isOpen())
+ − 53 return iodevice;
+ − 54 else
+ − 55 return NULL;
+ − 56 }
+ − 57
+ − 58
+ − 59 uLong ZCALLBACK qiodevice_read_file_func (
+ − 60 voidpf opaque UNUSED,
+ − 61 voidpf stream,
+ − 62 void* buf,
+ − 63 uLong size)
+ − 64 {
+ − 65 uLong ret;
+ − 66 ret = (uLong)((QIODevice*)stream)->read((char*)buf,size);
+ − 67 return ret;
+ − 68 }
+ − 69
+ − 70
+ − 71 uLong ZCALLBACK qiodevice_write_file_func (
+ − 72 voidpf opaque UNUSED,
+ − 73 voidpf stream,
+ − 74 const void* buf,
+ − 75 uLong size)
+ − 76 {
+ − 77 uLong ret;
+ − 78 ret = (uLong)((QIODevice*)stream)->write((char*)buf,size);
+ − 79 return ret;
+ − 80 }
+ − 81
+ − 82 uLong ZCALLBACK qiodevice_tell_file_func (
+ − 83 voidpf opaque UNUSED,
+ − 84 voidpf stream)
+ − 85 {
+ − 86 uLong ret;
+ − 87 ret = ((QIODevice*)stream)->pos();
+ − 88 return ret;
+ − 89 }
+ − 90
+ − 91 int ZCALLBACK qiodevice_seek_file_func (
+ − 92 voidpf opaque UNUSED,
+ − 93 voidpf stream,
+ − 94 uLong offset,
+ − 95 int origin)
+ − 96 {
+ − 97 uLong qiodevice_seek_result=0;
+ − 98 int ret;
+ − 99 switch (origin)
+ − 100 {
+ − 101 case ZLIB_FILEFUNC_SEEK_CUR :
+ − 102 qiodevice_seek_result = ((QIODevice*)stream)->pos() + offset;
+ − 103 break;
+ − 104 case ZLIB_FILEFUNC_SEEK_END :
+ − 105 qiodevice_seek_result = ((QIODevice*)stream)->size() - offset;
+ − 106 break;
+ − 107 case ZLIB_FILEFUNC_SEEK_SET :
+ − 108 qiodevice_seek_result = offset;
+ − 109 break;
+ − 110 default: return -1;
+ − 111 }
+ − 112 ret = !((QIODevice*)stream)->seek(qiodevice_seek_result);
+ − 113 return ret;
+ − 114 }
+ − 115
+ − 116 int ZCALLBACK qiodevice_close_file_func (
+ − 117 voidpf opaque UNUSED,
+ − 118 voidpf stream)
+ − 119 {
+ − 120 ((QIODevice*)stream)->close();
+ − 121 return 0;
+ − 122 }
+ − 123
+ − 124 int ZCALLBACK qiodevice_error_file_func (
+ − 125 voidpf opaque UNUSED,
+ − 126 voidpf stream)
+ − 127 {
+ − 128 return !((QIODevice*)stream)->errorString().isEmpty();
+ − 129 }
+ − 130
+ − 131 void fill_qiodevice_filefunc (
+ − 132 zlib_filefunc_def* pzlib_filefunc_def)
+ − 133 {
+ − 134 pzlib_filefunc_def->zopen_file = qiodevice_open_file_func;
+ − 135 pzlib_filefunc_def->zread_file = qiodevice_read_file_func;
+ − 136 pzlib_filefunc_def->zwrite_file = qiodevice_write_file_func;
+ − 137 pzlib_filefunc_def->ztell_file = qiodevice_tell_file_func;
+ − 138 pzlib_filefunc_def->zseek_file = qiodevice_seek_file_func;
+ − 139 pzlib_filefunc_def->zclose_file = qiodevice_close_file_func;
+ − 140 pzlib_filefunc_def->zerror_file = qiodevice_error_file_func;
+ − 141 pzlib_filefunc_def->opaque = NULL;
+ − 142 }