/*
 * Copyright (C) 2001-2017 Jacek Sieka, arnetheduck on gmail point com
 *
 * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#include "stdinc.h"
#include "SFVReader.h"

#include "StringTokenizer.h"
#include "File.h"

#ifndef _WIN32
#include <dirent.h>
#include <fnmatch.h>
#endif

namespace dcpp {

bool SFVReader::tryFile(const string& sfvFile, const string& fileName) {
	string sfv = File(sfvFile, File::READ, File::OPEN).read();

	string::size_type i = 0;
	while( (i = Util::findSubString(sfv, fileName, i)) != string::npos) {
		// Either we're at the beginning of the file or the line...otherwise skip...
		if( (i == 0) || (sfv[i-1] == '\n') ) {
			string::size_type j = i + fileName.length() + 1;
			if(j < sfv.length() - 8) {
				sscanf(sfv.c_str() + j, "%10x", &crc32);
				crcFound = true;
				return true;
			}
		}
		i += fileName.length();
	}

	return false;
}

void SFVReader::load(const string& fileName) noexcept {
	string path = Util::getFilePath(fileName);
	string fname = Util::getFileName(fileName);
	StringList files = File::findFiles(path, "*.sfv");

	for(StringIter i = files.begin(); i != files.end(); ++i) {
		try {
			if (tryFile(*i, fname)) {
				return;
			}
		} catch(const FileException&) {
			// Ignore...
		}
	}
}

} // namespace dcpp
