Initial commit

engines/watchmaker/ll/ll_ffile.cpp

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+/* 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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "watchmaker/ll/ll_ffile.h"
+#include "common/substream.h"
+#include "watchmaker/ll/ll_system.h"
+
+namespace Watchmaker {
+
+const int MAX_NAME_LEN = 52;
+
+struct FileEntry {
+	Common::String name;
+	int32 offset;
+	int32 time;
+	int32 date;
+};
+
+FastFile::FastFile(const char *path) : _path(path) {
+	auto stream = openFile(path);
+	assert(stream);
+
+	_numFiles = stream->readUint32LE();
+	_files = new FileEntry[_numFiles] {};
+	_totalSize = stream->size();
+
+	for (int i = 0; i < _numFiles; i++) {
+		char name[MAX_NAME_LEN] = {};
+		stream->read(name, MAX_NAME_LEN);
+		_files[i].name = name;
+		_files[i].offset = stream->readUint32LE();
+		_files[i].time = stream->readUint32LE();
+		_files[i].date = stream->readUint32LE();
+		for (auto it = _files[i].name.begin(); it != _files[i].name.end(); ++it) {
+			if (*it == '\\') {
+				*it = '/';
+			}
+		}
+	}
+}
+
+FastFile::~FastFile() {
+	delete[] _files;
+}
+
+Common::SharedPtr<Common::SeekableReadStream> FastFile::resolve(const char *filename) {
+	Common::String converted = filename;
+	int index = -1;
+	//HACK
+	if (converted.size() >= 2 && converted[0] == '.' && converted[1] == '/') {
+		converted = converted.substr(2, converted.size() - 2);
+	}
+	for (int i = 0; i < _numFiles; i++) {
+		if (_files[i].name.equalsIgnoreCase(converted)) {
+			index = i;
+			break;
+		}
+	}
+	if (index == -1) {
+		return nullptr;
+	}
+	const auto &entry = _files[index];
+	int size = 0;
+	if (index == _numFiles - 1) {
+		size = _totalSize - entry.offset;
+	} else {
+		size = _files[index + 1].offset - entry.offset;
+	}
+	auto stream = openFile(_path, entry.offset, size);
+	assert(stream);
+	return Common::SharedPtr<Common::SeekableReadStream>(stream);
+}
+
+} // End of namespace Watchmaker