/**
* merges two arrays.
*
* @param dest
* @param source
*/
private void mergeArray(COSName name, COSDictionary dest, COSDictionary source) {
COSArray destDict = (COSArray) dest.getDictionaryObject(name);
COSArray sourceDict = (COSArray) source.getDictionaryObject(name);
if (destDict == null) {
destDict = new COSArray();
dest.setItem(name, destDict);
}
for (int sourceDictIdx = 0;
sourceDict != null && sourceDictIdx < sourceDict.size();
sourceDictIdx++) {
COSBase key = sourceDict.get(sourceDictIdx);
if (key instanceof COSName) {
COSName keyname = (COSName) key;
boolean bFound = false;
for (int destDictIdx = 0; destDictIdx < destDict.size(); destDictIdx++) {
COSBase destkey = destDict.get(destDictIdx);
if (destkey instanceof COSName) {
COSName destkeyname = (COSName) destkey;
if (destkeyname.equals(keyname)) {
bFound = true;
break;
}
}
}
if (!bFound) {
destDict.add(keyname);
}
}
}
}
private void processPages(List pages) throws IOException {
Iterator pageIter = pages.iterator();
while (pageIter.hasNext()) {
PDPage page = (PDPage) pageIter.next();
COSDictionary pageDictionary = page.getCOSDictionary();
COSBase contents = pageDictionary.getDictionaryObject(COSName.CONTENTS);
if (contents instanceof COSStream) {
COSStream contentsStream = (COSStream) contents;
// System.err.println("stream");
COSArray array = new COSArray();
array.add(contentsStream);
mergePage(array, page);
pageDictionary.setItem(COSName.CONTENTS, array);
} else if (contents instanceof COSArray) {
COSArray contentsArray = (COSArray) contents;
mergePage(contentsArray, page);
} else {
throw new IOException("Contents are unknown type:" + contents.getClass().getName());
}
pageCount++;
}
}
/**
* merges two dictionaries.
*
* @param dest
* @param source
*/
private void mergeDictionary(
COSName name, COSDictionary dest, COSDictionary source, Map objectNameMap) {
COSDictionary destDict = (COSDictionary) dest.getDictionaryObject(name);
COSDictionary sourceDict = (COSDictionary) source.getDictionaryObject(name);
if (destDict == null) {
destDict = new COSDictionary();
dest.setItem(name, destDict);
}
if (sourceDict != null) {
for (Map.Entry<COSName, COSBase> entry : sourceDict.entrySet()) {
COSName mappedKey = (COSName) objectNameMap.get(entry.getKey().getName());
if (mappedKey != null) {
destDict.setItem(mappedKey, entry.getValue());
}
}
}
}