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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 2
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/

#include "backends/networking/sdl_net/handlers/filesbasehandler.h"
#include "backends/saves/default/default-saves.h"
#include "common/config-manager.h"
#include "common/system.h"

namespace Networking {

FilesBaseHandler::FilesBaseHandler() {}

FilesBaseHandler::~FilesBaseHandler() {}

Common::String FilesBaseHandler::parentPath(Common::String path) {
	if (path.size() && (path.lastChar() == '/' || path.lastChar() == '\\')) path.deleteLastChar();
	if (!path.empty()) {
		for (int i = path.size() - 1; i >= 0; --i)
			if (i == 0 || path[i] == '/' || path[i] == '\\') {
				path.erase(i);
				break;
			}
	}
	if (path.size() && path.lastChar() != '/' && path.lastChar() != '\\') path += '/';
	return path;
}

bool FilesBaseHandler::transformPath(Common::String &path, Common::String &prefixToRemove, Common::String &prefixToAdd, bool isDirectory) {
	// <path> is not empty, but could lack the trailing slash	
	if (isDirectory && path.lastChar() != '/' && path.lastChar() != '\\') path += '/';

	if (path.hasPrefix("/root")) {
		prefixToAdd = "/root/";
		prefixToRemove = "";
		path.erase(0, 5);
		if (path == "") path = "/"; // absolute root is '/'
		if (path != "/") path.deleteChar(0); // if that was "/root/ab/c", it becomes "/ab/c", but we need "ab/c"
		return true;
	}

	if (path.hasPrefix("/saves")) {
		prefixToAdd = "/saves/";

		// determine savepath (prefix to remove)
		DefaultSaveFileManager *manager = dynamic_cast<DefaultSaveFileManager *>(g_system->getSavefileManager());
		prefixToRemove = (manager ? manager->concatWithSavesPath("") : ConfMan.get("savepath"));
		if (prefixToRemove.size() && prefixToRemove.lastChar() != '/' && prefixToRemove.lastChar() != '\\')
			prefixToRemove += '/';

		path.erase(0, 6);
		if (path.size() && (path[0] == '/' || path[0] == '\\'))
			path.deleteChar(0);
		path = prefixToRemove + path;
		return true;
	}

	return false;
}

} // End of namespace Networking