diff options
Diffstat (limited to 'engines/wintermute/base/file/BPkgFile.cpp')
| -rw-r--r-- | engines/wintermute/base/file/BPkgFile.cpp | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/engines/wintermute/base/file/BPkgFile.cpp b/engines/wintermute/base/file/BPkgFile.cpp new file mode 100644 index 0000000000..7eafe7919e --- /dev/null +++ b/engines/wintermute/base/file/BPkgFile.cpp @@ -0,0 +1,105 @@ +/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+/*
+ * This file is based on WME Lite.
+ * http://dead-code.org/redir.php?target=wmelite
+ * Copyright (c) 2011 Jan Nedoma
+ */
+
+#include "engines/wintermute/dcgf.h"
+#include "engines/wintermute/base/BPackage.h"
+#include "engines/wintermute/base/file/BPkgFile.h"
+#include "engines/wintermute/base/BGame.h"
+#include "engines/wintermute/base/BFileManager.h"
+#include "common/util.h"
+#include "common/file.h"
+#include "common/stream.h"
+#include "common/substream.h"
+#include "common/zlib.h"
+
+namespace WinterMute {
+
+// HACK: wrapCompressedStream might set the size to 0, so we need a way to override it.
+class CBPkgFile : public Common::SeekableReadStream {
+ uint32 _size;
+ Common::SeekableReadStream *_stream;
+public:
+ CBPkgFile(Common::SeekableReadStream *stream, uint32 knownLength) : _size(knownLength), _stream(stream) {}
+ virtual ~CBPkgFile() {
+ delete _stream;
+ }
+ virtual uint32 read(void *dataPtr, uint32 dataSize) {
+ return _stream->read(dataPtr, dataSize);
+ }
+ virtual bool eos() const {
+ return _stream->eos();
+ }
+ virtual int32 pos() const {
+ return _stream->pos();
+ }
+ virtual int32 size() const {
+ return _size;
+ }
+ virtual bool seek(int32 offset, int whence = SEEK_SET) {
+ return _stream->seek(offset, whence);
+ }
+};
+
+Common::SeekableReadStream *openPkgFile(const Common::String &filename, CBFileManager *fileManager) {
+ CBFileEntry *fileEntry;
+ Common::SeekableReadStream *file = NULL;
+ char fileName[MAX_PATH_LENGTH];
+ strcpy(fileName, filename.c_str());
+
+ // correct slashes
+ for (uint32 i = 0; i < strlen(fileName); i++) {
+ if (fileName[i] == '/') fileName[i] = '\\';
+ }
+
+ fileEntry = fileManager->getPackageEntry(fileName);
+ if (!fileEntry) return NULL;
+
+ file = fileEntry->_package->getFilePointer();
+ if (!file) return NULL;
+
+ // TODO: Cleanup
+ bool compressed = (fileEntry->_compressedLength != 0);
+ /* _size = fileEntry->_length; */
+
+ if (compressed) {
+ // TODO: Really, most of this logic might be doable directly in the fileEntry?
+ // But for now, this should get us rolling atleast.
+ file = Common::wrapCompressedReadStream(new Common::SeekableSubReadStream(file, fileEntry->_offset, fileEntry->_offset + fileEntry->_length, DisposeAfterUse::YES));
+ } else {
+ file = new Common::SeekableSubReadStream(file, fileEntry->_offset, fileEntry->_offset + fileEntry->_length, DisposeAfterUse::YES);
+ }
+ if (file->size() == 0) {
+ file = new CBPkgFile(file, fileEntry->_length);
+ }
+
+ file->seek(0);
+
+ return file;
+}
+
+} // end of namespace WinterMute
|