Program: 96410
Project: 96410
Buggy source:
/** 
 * Adds a new item to the manifest. If an identifier is not specified it will automatically be assigned. <p> The <i>spine</i> defines the reading order, so the order items are added and whether or not <i>spine</i> is <code>true</code> does matter. Unless a table of contents file has been specified it will be generated. All files that have been added to the spine will be examined unless the <i>noToc</i> attribute has been set to <code>true</code>. </p>
 * @param file the file to add
 * @param dest the destination sub-folder or <code>null</code>
 * @param id identifier or <code>null</code>
 * @param type MIME file type
 * @param spine whether or not to add the item to the spine
 * @param linear whether or not the item is part of the reading order
 * @param noToc whether or not to include in TOC when automatically generated
 * @return the new item
 */
public Item addItem(String id,Locale lang,File file,String dest,String type,boolean spine,boolean linear,boolean noToc){
  if (file == null || !file.exists()) {
    throw new IllegalArgumentException("String_Node_Str" + file.getAbsolutePath() + "String_Node_Str");
  }
  if (file.isDirectory()) {
    throw new IllegalArgumentException("String_Node_Str" + file.getAbsolutePath() + "String_Node_Str");
  }
  Item item=OPFFactory.eINSTANCE.createItem();
  if (type == null) {
    type=EPUBFileUtil.getMimeType(file);
    if (type == null) {
      throw new IllegalArgumentException("String_Node_Str" + file + "String_Node_Str");
    }
  }
  if (id == null) {
    String prefix="String_Node_Str";
    if (!type.equals(MIMETYPE_XHTML)) {
      prefix=(type.indexOf('/')) == -1 ? type : type.substring(0,type.indexOf('/')) + "String_Node_Str";
    }
    id=prefix + file.getName().substring(0,file.getName().lastIndexOf('.'));
  }
  item.setId(id);
  if (dest == null) {
    item.setHref(file.getName());
  }
 else {
    item.setHref(dest + '/' + file.getName());
  }
  item.setNoToc(noToc);
  item.setMedia_type(type);
  item.setFile(file.getAbsolutePath());
  opfPackage.getManifest().getItems().add(item);
  if (spine) {
    Itemref ref=OPFFactory.eINSTANCE.createItemref();
    if (!linear) {
      ref.setLinear("String_Node_Str");
    }
    ref.setIdref(id);
    getSpine().getSpineItems().add(ref);
  }
  return item;
}

Fixed version (ground truth):
/** 
 * Adds a new item to the manifest. If an identifier is not specified it will automatically be assigned. <p> The <i>spine</i> defines the reading order, so the order items are added and whether or not <i>spine</i> is <code>true</code> does matter. Unless a table of contents file has been specified it will be generated. All files that have been added to the spine will be examined unless the <i>noToc</i> attribute has been set to <code>true</code>. </p>
 * @param file the file to add
 * @param dest the destination sub-folder or <code>null</code>
 * @param id identifier or <code>null</code>
 * @param type MIME file type
 * @param spine whether or not to add the item to the spine
 * @param linear whether or not the item is part of the reading order
 * @param noToc whether or not to include in TOC when automatically generated
 * @return the new item
 */
public Item addItem(String id,Locale lang,File file,String dest,String type,boolean spine,boolean linear,boolean noToc){
  if (file == null) {
    throw new IllegalArgumentException("String_Node_Str");
  }
  if (!file.exists()) {
    throw new IllegalArgumentException("String_Node_Str" + file.getAbsolutePath() + "String_Node_Str");
  }
  if (file.isDirectory()) {
    throw new IllegalArgumentException("String_Node_Str" + file.getAbsolutePath() + "String_Node_Str");
  }
  Item item=OPFFactory.eINSTANCE.createItem();
  if (type == null) {
    type=EPUBFileUtil.getMimeType(file);
    if (type == null) {
      throw new IllegalArgumentException("String_Node_Str" + file + "String_Node_Str");
    }
  }
  if (id == null) {
    String prefix="String_Node_Str";
    if (!type.equals(MIMETYPE_XHTML)) {
      prefix=(type.indexOf('/')) == -1 ? type : type.substring(0,type.indexOf('/')) + "String_Node_Str";
    }
    id=prefix + file.getName().substring(0,file.getName().lastIndexOf('.'));
  }
  item.setId(id);
  if (dest == null) {
    item.setHref(file.getName());
  }
 else {
    item.setHref(dest + '/' + file.getName());
  }
  item.setNoToc(noToc);
  item.setMedia_type(type);
  item.setFile(file.getAbsolutePath());
  opfPackage.getManifest().getItems().add(item);
  if (spine) {
    Itemref ref=OPFFactory.eINSTANCE.createItemref();
    if (!linear) {
      ref.setLinear("String_Node_Str");
    }
    ref.setIdref(id);
    getSpine().getSpineItems().add(ref);
  }
  return item;
}