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/* Qilin - a Java Pointer Analysis Framework
 * Copyright (C) 2021-2030 Qilin developers
 *
 * This program 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.
 *
 * 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 Lesser Public License for more details.
 *
 * You should have received a copy of the GNU General Lesser Public
 * License along with this program.  If not, see
 * .
 */

package qilin.util;

import java.io.*;
import java.util.Map;
import java.util.Set;
import java.util.regex.Pattern;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class Util {
  private static final Logger logger = LoggerFactory.getLogger(Util.class);

  public static byte[] toUtf8(String s) {
    try {
      ByteArrayOutputStream bs = new ByteArrayOutputStream(s.length());
      DataOutputStream d = new DataOutputStream(bs);
      d.writeUTF(s);
      return bs.toByteArray();
    } catch (IOException e) {
      logger.debug("Some sort of IO exception in toUtf8 with " + s);
    }
    return null;
  }

  public static  boolean addToMap(Map> map, K key, V value) {
    return map.computeIfAbsent(key, k -> DataFactory.createSet()).add(value);
  }

  public static  boolean removeFromMap(Map> map, K key, V value) {
    if (!map.containsKey(key)) {
      return false;
    }
    return map.get(key).remove(value);
  }

  public static  void add(Map map, T name, String... aliases) {
    for (String alias : aliases) {
      map.put(alias, name);
    }
  }

  public static String[] concat(String[] a, String[] b) {
    String[] c = new String[a.length + b.length];
    System.arraycopy(a, 0, c, 0, a.length);
    System.arraycopy(b, 0, c, a.length, b.length);
    return c;
  }

  public static void writeToFile(String file, String content) {
    try {
      File mfile = new File(file);
      if (!mfile.exists()) {
        System.out.println(file);
        mfile.createNewFile();
      }
      FileWriter writer = new FileWriter(mfile);
      writer.write(content);
      writer.close();
    } catch (IOException e) {
      e.printStackTrace();
    }
  }

  private static final Pattern qPat = Pattern.compile("'");

  public static String stripQuotes(CharSequence s) {
    return qPat.matcher(s).replaceAll("");
  }
}