~repos /gdx-studio

/*
 * 03/21/2010
 *
 * Copyright (C) 2010 Robert Futrell
 * robert_futrell at users.sourceforge.net
 * http://fifesoft.com/rsyntaxtextarea
 *
 * This library is distributed under a modified BSD license.  See the included
 * RSTALanguageSupport.License.txt file for details.
 */
package org.fife.rsta.ac.java.classreader.constantpool;

import java.io.UnsupportedEncodingException;


/**
 * Class representing a <code>CONSTANT_Utf8_info</code> structure.
 *
 * @author Robert Futrell
 * @version 1.0
 */
public class ConstantUtf8Info extends ConstantPoolInfo {

  //private byte[] bytes;
  private String representedString;


  /**
   * Constructor.
   *
   * @param nameIndex
   * @param descriptorIndex
   */
  public ConstantUtf8Info(byte[] bytes) {
    super(CONSTANT_Utf8);
    //this.bytes = bytes;
    representedString = createRepresentedString(bytes);
  }


//  public byte[] getBytes() {
//    return bytes;
//  }

/*
  private static final boolean isBitSet(int b, int bit) {
    return ((b>>bit)&1)>0;
  }
*/

  private String createRepresentedString(byte[] bytes) {
/*
    StringBuffer sb = new StringBuffer();

    int pos = 0;
    while (pos<bytes.length) {

      int b = bytes[pos++];

      // A single-byte char, '\u0001' to '\u007F'.
      if (!isBitSet(b, 7)) {
        sb.append((char)(b&0x7f));
      }

      // null char ('\u0000') or char in range '\u0080' - '\u07FF'.
      else if (6==(b>>5)) {
        // x = 110 (bits 10-6)
        // y = 10 (bits 5-0)
        // ch = ((x & 0x1f) << 6) + (y & 0x3f)
        int x = b;
        int y = bytes[pos++];
        char ch = (char)(((x&0x1f)<<6) + (y&0x3f));
        sb.append(ch);
      }

      // chars in range '\u0800' - '\uFFFF'.
      else if (15==(b>>4)) {
        // x = 1110 (bits 15-12)
        // y = 10 (bits 11-6)
        // z = 10 (bits 5-0)
        // ch = ((x & 0xf) << 12) + ((y & 0x3f) << 6) + (z & 0x3f)
        int x = b;
        int y = bytes[pos++];
        int z = bytes[pos++];
        char ch = (char)(((x&0xf)<<12) + ((y&0x3f)<<6) + (z&0x3f));
        sb.append(ch);
      }

      // An unknown bit header.
      else {
        throw new InternalError("Unknown bit header in Utf8 string: " +
            b);
      }

    }

    representedString = sb.toString();
*/
try {
  representedString = new String(bytes, "UTF-8");
} catch (UnsupportedEncodingException uee) { // Never happens.
  uee.printStackTrace();
  System.exit(0);
}
    return representedString;

  }


  /**
   * Returns the string represented by this info.
   *
   * @param quoted Whether to add enclosing quotation marks, and "escape"
   *        any quotation marks in the represented string.
   * @return The string represented.
   */
  public String getRepresentedString(boolean quoted) {
    if (!quoted) {
      return representedString;
    }
    String temp = "\"" + representedString.replaceAll("\"", "\\\"") + "\"";
    return temp;
  }


  /**
   * Returns a string representation of this object.  Useful for debugging.
   *
   * @return A string representation of this object.
   */
  public String toString() {
    return "[ConstantUtf8Info: " + representedString +
        "]";
  }


}