/**
* Copyright (C) 2010-2017 Gordon Fraser, Andrea Arcuri and EvoSuite
* contributors
*
* This file is part of EvoSuite.
*
* EvoSuite is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation, either version 3.0 of the License, or
* (at your option) any later version.
*
* EvoSuite 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
* Lesser Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with EvoSuite. If not, see <http://www.gnu.org/licenses/>.
*/
package org.evosuite.maven.util;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import org.evosuite.Properties;
import org.evosuite.utils.MD5;
/**
* <p>
* HistoryChanges class
* <p>
*
* On each execution of EvoSuite-Maven-Plugin this class checks which
* files have changed since EvoSuite was invoked the last time
*
* How? This class keeps a file with the following format
* __absolute_file_path__ \t __md5_hash__
*
* then, if a file has a different hash, i.e., has been changed, another
* file called 'history_file' is keep with the following format
* (Added)A/(Modified)M \t __absolute_file_path__
*
* therefore, when EvoSuite-Maven-Plugin is executed with HistorySchedule
* enabled, the 'history_file' will be used to identify which files have
* added/modified and perform the schedule.
*
* @author José Campos
*/
public class HistoryChanges {
public static void keepTrack(String basedir, List<File> files) throws Exception {
File dot_evosuite = new File(basedir + File.separator + Properties.CTG_DIR);
if (!dot_evosuite.exists()) {
if (!dot_evosuite.mkdir()) {
throw new Exception("No permission to create the directory '" + basedir + File.separator + Properties.CTG_DIR + "'");
}
}
File hash_file = new File(basedir + File.separator + Properties.CTG_DIR + File.separator + "hash_file");
File history_file = new File(basedir + File.separator + Properties.CTG_DIR + File.separator + "history_file");
if (!hash_file.exists()) {
try {
// create the hash_file <Path, Hash>
if (!hash_file.createNewFile()) {
throw new Exception("No permission to create the file '" + basedir + File.separator + Properties.CTG_DIR + File.separator + "hash_file" + "'");
}
// and the history_file as well
if (!history_file.createNewFile()) {
throw new Exception("No permission to create the file '" + basedir + File.separator + Properties.CTG_DIR + File.separator + "history_file" + "'");
}
FileWriter hash_file_fw = new FileWriter(hash_file.getAbsoluteFile());
BufferedWriter hash_file_bw = new BufferedWriter(hash_file_fw);
FileWriter history_file_fw = new FileWriter(history_file.getAbsoluteFile());
BufferedWriter history_file_bw = new BufferedWriter(history_file_fw);
// add content to hash_file and to history_file
for (File file : files) {
hash_file_bw.write(file.getAbsolutePath() + "\t" + MD5.hash(file) + "\n");
history_file_bw.write("A" + "\t" + file.getAbsolutePath() + "\n");
}
hash_file_bw.close();
history_file_bw.close();
} catch (IOException e) {
throw new Exception("IOException: ", e);
}
} else {
// read content of hash_file
Map<String, String> hash_file_content = new LinkedHashMap<String, String>();
try (BufferedReader br = new BufferedReader(new FileReader(hash_file))) {
String sCurrentLine;
while ((sCurrentLine = br.readLine()) != null) {
String[] split = sCurrentLine.split("\t");
hash_file_content.put(split[0], split[1]);
}
} catch (IOException e) {
throw new Exception("reading the content of hash_file ", e);
}
try {
FileWriter hash_file_fw = new FileWriter(hash_file.getAbsoluteFile());
BufferedWriter hash_file_bw = new BufferedWriter(hash_file_fw);
hash_file_bw.write(""); // clean file
FileWriter history_file_fw = new FileWriter(history_file.getAbsoluteFile());
BufferedWriter history_file_bw = new BufferedWriter(history_file_fw);
history_file_bw.write(""); // clean file
// compare each hash
for (File file : files) {
String hash = MD5.hash(file);
hash_file_bw.write(file.getAbsolutePath() + "\t" + hash + "\n");
if (!hash_file_content.containsKey(file.getAbsolutePath())) {
history_file_bw.write("A" + "\t" + file.getAbsolutePath() + "\n");
}
else if (!hash_file_content.get(file.getAbsolutePath()).equals(hash)) {
history_file_bw.write("M" + "\t" + file.getAbsolutePath() + "\n");
}
}
hash_file_bw.close();
history_file_bw.close();
} catch (IOException e) {
throw new Exception("IOException: ", e);
}
}
}
}