diff options
Diffstat (limited to 'engines/wintermute/Base/BPkgFile.cpp')
| -rw-r--r-- | engines/wintermute/Base/BPkgFile.cpp | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/engines/wintermute/Base/BPkgFile.cpp b/engines/wintermute/Base/BPkgFile.cpp new file mode 100644 index 0000000000..a48ccf7555 --- /dev/null +++ b/engines/wintermute/Base/BPkgFile.cpp @@ -0,0 +1,161 @@ +/* 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/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 {
+
+//////////////////////////////////////////////////////////////////////////
+CBPkgFile::CBPkgFile(CBGame *inGame): CBFile(inGame) {
+ _fileEntry = NULL;
+ _file = NULL;
+ _compressed = false;
+
+}
+
+//////////////////////////////////////////////////////////////////////////
+CBPkgFile::~CBPkgFile() {
+ Close();
+}
+
+
+//////////////////////////////////////////////////////////////////////////
+HRESULT CBPkgFile::Open(const Common::String &Filename) {
+ Close();
+
+ char fileName[MAX_PATH];
+ strcpy(fileName, Filename.c_str());
+
+ // correct slashes
+ for (uint32 i = 0; i < strlen(fileName); i++) {
+ if (fileName[i] == '/') fileName[i] = '\\';
+ }
+
+ _fileEntry = Game->_fileManager->GetPackageEntry(fileName);
+ if (!_fileEntry) return E_FAIL;
+
+ _file = _fileEntry->_package->GetFilePointer();
+ if (!_file) return E_FAIL;
+
+ // TODO: Cleanup
+ _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);
+ }
+
+ SeekToPos(0);
+
+ return S_OK;
+}
+
+
+//////////////////////////////////////////////////////////////////////////
+HRESULT CBPkgFile::Close() {
+ if (_fileEntry) {
+ _fileEntry->_package->CloseFilePointer(_file);
+ _fileEntry = NULL;
+ }
+ _file = NULL;
+
+ // TODO: Do we really need to take care of our position and size at all (or could (Safe)SubStreams fix that for us?
+ _pos = 0;
+ _size = 0;
+
+ return S_OK;
+}
+
+
+//////////////////////////////////////////////////////////////////////////
+HRESULT CBPkgFile::Read(void *Buffer, uint32 Size) {
+ if (!_fileEntry) return E_FAIL;
+
+ HRESULT ret = S_OK;
+
+ if (_pos + Size > _size) {
+ Size = _size - _pos;
+ if (Size == 0) return E_FAIL;
+ }
+
+ ret = _file->read(Buffer, Size);
+
+ _pos += Size;
+
+ return ret;
+}
+
+
+//////////////////////////////////////////////////////////////////////////
+HRESULT CBPkgFile::Seek(uint32 Pos, TSeek Origin) {
+ if (!_fileEntry) return E_FAIL;
+
+ uint32 NewPos = 0;
+
+ switch (Origin) {
+ case SEEK_TO_BEGIN:
+ NewPos = Pos;
+ break;
+ case SEEK_TO_END:
+ NewPos = _size + Pos;
+ break;
+ case SEEK_TO_CURRENT:
+ NewPos = _pos + Pos;
+ break;
+ }
+
+ if (NewPos < 0 || NewPos > _size) return E_FAIL;
+
+ return SeekToPos(NewPos);
+}
+
+
+#define STREAM_BUFFER_SIZE 4096
+//////////////////////////////////////////////////////////////////////////
+HRESULT CBPkgFile::SeekToPos(uint32 NewPos) {
+ HRESULT ret = S_OK;
+
+ // seek compressed stream to NewPos
+ _pos = NewPos;
+ return ret;
+}
+
+} // end of namespace WinterMute
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