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/*
 * This file is part of Log4Jdbc.
 *
 * Log4Jdbc 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.
 *
 * Log4Jdbc 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 Log4Jdbc.  If not, see .
 *
 */
package fr.ms.log4jdbc.utils;

import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

/**
 * 
 * @see Marco4J
 * 
 * 
 * @author Marco Semiao
 * 
 */
public class InputStreamWrapper extends InputStream {

  private final static String nl = System.getProperty("line.separator");

  private InputStream is;

  public InputStreamWrapper(final InputStream is) {

    if (is != null) {
      BufferedReader br = null;
      final StringBuilder sb = new StringBuilder();
      String line;
      try {

        InputStreamReader isr = new InputStreamReader(is);
        br = new BufferedReader(isr);
        while ((line = br.readLine()) != null) {
          sb.append(replaceAll(line, "\\", "\\\\"));
          sb.append(nl);
        }

      } catch (final IOException e) {
        e.printStackTrace();
      } finally {
        if (br != null) {
          try {
            br.close();
          } catch (final IOException e) {
            e.printStackTrace();
          }
        }
      }

      this.is = new ByteArrayInputStream(sb.toString().getBytes());
    }
  }

  public int read() throws IOException {
    return is.read();
  }

  public int read(final byte[] b) throws IOException {
    return is.read(b);
  }

  public int read(final byte[] b, final int off, final int len) throws IOException {
    return is.read(b, off, len);
  }

  public long skip(final long n) throws IOException {
    return is.skip(n);
  }

  public int available() throws IOException {
    return is.available();
  }

  public void close() throws IOException {
    is.close();
  }

  public void mark(final int readlimit) {
    is.mark(readlimit);
  }

  public void reset() throws IOException {
    is.reset();
  }

  public boolean markSupported() {
    return is.markSupported();
  }

  private static String replaceAll(final String str, final String replace, final String replacement) {
    final StringBuffer sb = new StringBuffer(str);
    int firstOccurrence = sb.toString().indexOf(replace);

    while (firstOccurrence != -1) {
      sb.replace(firstOccurrence, firstOccurrence + replace.length(), replacement);
      final int position = firstOccurrence + replacement.length();
      firstOccurrence = sb.toString().indexOf(replace, position);
    }

    return sb.toString();
  }
}