Initial commit

engines/crab/filesystem.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/>.
+ *
+ */
+
+/*
+ * This code is based on the CRAB engine
+ *
+ * Copyright (c) Arvind Raja Yadav
+ *
+ * Licensed under MIT
+ *
+ */
+
+#include "common/file.h"
+#include "crab/filesystem.h"
+
+namespace Crab {
+
+Common::Path cleansePath(const Common::Path &path) {
+	// If the path doesn't begin with res it will return the same
+	return path.relativeTo("res");
+}
+
+bool fileOpen(const Common::Path &path, char *&data) {
+	if (path.empty())
+		return false;
+
+	if (data != nullptr)
+		delete[] data;
+
+	Common::File file;
+	Common::Path cleansedPath = cleansePath(path);
+	if (!file.open(cleansedPath)) {
+		warning("Unable to open file %s", cleansedPath.toString(Common::Path::kNativeSeparator).c_str());
+		data = nullptr;
+		return false;
+	}
+
+	// allocate data
+	int64 len = file.size();
+	data = new char[len + 1];
+	data[len] = '\0';
+
+	// read the file into data
+	file.read(data, len);
+	file.close();
+
+	return true;
+}
+
+bool fileOpen(const Common::Path &path, Common::File *file) {
+	if (path.empty())
+		return false;
+
+	if (file->isOpen())
+		file->close();
+
+	Common::Path cleansedPath = cleansePath(path);
+	if (!file->open(cleansedPath)) {
+		warning("Unable to open file %s", cleansedPath.toString(Common::Path::kNativeSeparator).c_str());
+		return false;
+	}
+
+	return true;
+}
+
+} // End of namespace Crab