diff options
Diffstat (limited to 'engines/wintermute/base/file/base_file_entry.cpp')
| -rw-r--r-- | engines/wintermute/base/file/base_file_entry.cpp | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/engines/wintermute/base/file/base_file_entry.cpp b/engines/wintermute/base/file/base_file_entry.cpp index 43527f9fc0..5032650704 100644 --- a/engines/wintermute/base/file/base_file_entry.cpp +++ b/engines/wintermute/base/file/base_file_entry.cpp @@ -27,8 +27,61 @@ */
#include "engines/wintermute/base/file/base_file_entry.h"
+#include "engines/wintermute/base/file/base_package.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 *BaseFileEntry::createReadStream() const {
+ Common::SeekableReadStream *file = _package->getFilePointer();
+ if (!file) return NULL;
+
+ // TODO: Cleanup
+ bool compressed = (_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, _offset, _offset + _length, DisposeAfterUse::YES));
+ } else {
+ file = new Common::SeekableSubReadStream(file, _offset, _offset + _length, DisposeAfterUse::YES);
+ }
+ if (file->size() == 0) {
+ file = new CBPkgFile(file, _length);
+ }
+
+ file->seek(0);
+
+ return file;
+}
//////////////////////////////////////////////////////////////////////////
BaseFileEntry::BaseFileEntry(){
|