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engines/ultima/ultima8/filesys/archive.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 "ultima/ultima8/misc/debugger.h"
+#include "ultima/ultima8/filesys/archive.h"
+#include "ultima/ultima8/filesys/flex_file.h"
+#include "ultima/ultima8/filesys/u8_save_file.h"
+
+namespace Ultima {
+namespace Ultima8 {
+
+Archive::Archive() {
+	_count = 0;
+}
+
+Archive::~Archive() {
+	for (unsigned int i = 0; i < _sources.size(); ++i)
+		delete _sources[i];
+	_sources.clear();
+}
+
+Archive::Archive(Common::SeekableReadStream *rs) : _count(0) {
+	addSource(rs);
+}
+
+bool Archive::addSource(FlexFile *af) {
+	_sources.push_back(af);
+
+	uint32 indexcount = af->getCount();
+	if (indexcount > _count)
+		_count = indexcount;
+
+	return true;
+}
+
+bool Archive::addSource(Common::SeekableReadStream *rs) {
+	if (!rs)
+		return false;
+
+	FlexFile *s = new FlexFile(rs);
+	if (!s->isValid()) {
+		delete s;
+		return false;
+	}
+
+	return addSource(s);
+}
+
+void Archive::cache() {
+	for (unsigned int i = 0; i < _count; ++i)
+		cache(i);
+}
+
+void Archive::uncache() {
+	for (unsigned int i = 0; i < _count; ++i)
+		uncache(i);
+}
+
+uint8 *Archive::getRawObject(uint32 index, uint32 *sizep) {
+	FlexFile *f = findArchiveFile(index);
+	if (!f)
+		return nullptr;
+
+	return f->getObject(index, sizep);
+}
+
+uint32 Archive::getRawSize(uint32 index) const {
+	FlexFile *f = findArchiveFile(index);
+	if (!f) return 0;
+
+	return f->getSize(index);
+}
+
+FlexFile *Archive::findArchiveFile(uint32 index) const {
+	unsigned int n = _sources.size();
+	for (unsigned int i = 1; i <= n; ++i) {
+		if (_sources[n - i]->exists(index))
+			return _sources[n - i];
+	}
+
+	return nullptr;
+}
+
+} // End of namespace Ultima8
+} // End of namespace Ultima