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package com.sun.jdo.api.persistence.enhancer.classfile;

import java.io.*;

/**
 * Represents the source file attribute in a class file
 */

public class SourceFileAttribute extends ClassAttribute {
  /* The expected attribute name */
    public static final String expectedAttrName = "SourceFile";//NOI18N

  /* The source file name */
  private ConstUtf8 sourceFileName;

  /* public accessors */

  /**
   * Returns the source file name
   * The file name should not include directories
   */
  public ConstUtf8 fileName() {
    return sourceFileName;
  }

  /**
   * Sets the source file name
   */
  public void setFileName(ConstUtf8 name) {
    sourceFileName = name;
  }

  /**
   * Constructor for a source file attribute
   */
  public SourceFileAttribute(ConstUtf8 attrName, ConstUtf8 sourceName) {
    super(attrName);
    sourceFileName = sourceName;
  }

  /* package local methods */
  static SourceFileAttribute read(ConstUtf8 attrName,
				  DataInputStream data, ConstantPool pool)
    throws IOException {
    int index = 0;
    index = data.readUnsignedShort();

    return new SourceFileAttribute(attrName,
				   (ConstUtf8) pool.constantAt(index));
  }

  void write(DataOutputStream out) throws IOException {
    out.writeShort(attrName().getIndex());
    out.writeInt(2);
    out.writeShort(sourceFileName.getIndex());
  }

  void print(PrintStream out, int indent) {
    ClassPrint.spaces(out, indent);
    out.println("SourceFile: " + sourceFileName.asString());//NOI18N
  }
}