1 files changed, 146 insertions, 0 deletions
diff --git a/quazip/qioapi.cpp b/quazip/qioapi.cpp
new file mode 100644
index 00000000..f254c34d
--- /dev/null
+++ b/quazip/qioapi.cpp
@@ -0,0 +1,146 @@
+/* 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 ((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()) {
+        if (iodevice->isSequential()) {
+            iodevice->close();
+            return NULL;
+        } else {
+            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)
+{
+    // 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 = NULL;
+}