Initial commit

engines/glk/hugo/resource_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 "glk/hugo/resource_archive.h"
+#include "glk/hugo/hugo.h"
+#include "common/algorithm.h"
+#include "common/memstream.h"
+
+namespace Glk {
+namespace Hugo {
+
+bool ResourceArchive::splitName(const Common::String &name,
+		Common::String &filename, Common::String &resName) {
+	size_t commaIndex = name.findFirstOf(',');
+	if (commaIndex == Common::String::npos)
+		return false;
+
+	filename = Common::String(name.c_str(), commaIndex);
+	resName = Common::String(name.c_str() + commaIndex + 1);
+
+	if (resName.hasSuffixIgnoreCase(".jpg"))
+		resName = Common::String(resName.c_str(), resName.size() - 4);
+	else if (resName.hasSuffixIgnoreCase(".jpeg"))
+		resName = Common::String(resName.c_str(), resName.size() - 5);
+	else if (resName.contains("."))
+		return false;
+
+	return true;
+}
+
+
+bool ResourceArchive::hasFile(const Common::Path &path) const {
+	Common::String filename, resName;
+
+	if (!splitName(path.baseName(), filename, resName))
+		return false;
+	size_t resLength = g_vm->FindResource(filename.c_str(), resName.c_str());
+	g_vm->hugo_fclose(g_vm->resource_file);
+
+	return resLength != 0;
+}
+
+const Common::ArchiveMemberPtr ResourceArchive::getMember(const Common::Path &path) const {
+	if (!hasFile(path))
+		return Common::ArchiveMemberPtr();
+
+	return Common::ArchiveMemberPtr(new Common::GenericArchiveMember(path, *this));
+}
+
+Common::SeekableReadStream *ResourceArchive::createReadStreamForMember(const Common::Path &path) const {
+	Common::String filename, resName;
+
+	// Split up the file and resource entry; return if it's not one
+	if (!splitName(path.baseName(), filename, resName))
+		return nullptr;
+
+	// Try and get the entry details from the given file
+	size_t resLength = g_vm->FindResource(filename.c_str(), resName.c_str());
+
+	if (!resLength) {
+		g_vm->hugo_fclose(g_vm->resource_file);
+		return nullptr;
+	}
+
+	// Otherwise, load the specified resource
+	byte *buffer = (byte *)malloc(resLength);
+	g_vm->glk_get_buffer_stream(g_vm->resource_file, (char *)buffer, resLength);
+	g_vm->hugo_fclose(g_vm->resource_file);
+
+	// Return a stream to allow access to the data
+	return new Common::MemoryReadStream(buffer, resLength, DisposeAfterUse::YES);
+}
+
+} // End of namespace Hugo
+} // End of namespace Glk