/** * 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++; } }
/** * Creates a new instance based on a given {@link COSDictionary}. * * @param dict the dictionary */ public PDOptionalContentGroup(COSDictionary dict) { if (!dict.getItem(COSName.TYPE).equals(COSName.OCG)) { throw new IllegalArgumentException( "Provided dictionary is not of type '" + COSName.OCG + "'"); } this.ocg = dict; }
/** * 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()); } } } }
private COSStream makeUniqObjectNames(Map objectNameMap, COSStream stream) throws IOException { ByteArrayOutputStream baos = new ByteArrayOutputStream(10240); byte[] buf = new byte[10240]; int read; InputStream is = stream.getUnfilteredStream(); while ((read = is.read(buf)) > -1) { baos.write(buf, 0, read); } buf = baos.toByteArray(); baos = new ByteArrayOutputStream(buf.length + 100); StringBuffer sbObjectName = new StringBuffer(10); boolean bInObjectIdent = false; boolean bInText = false; boolean bInEscape = false; for (int i = 0; i < buf.length; i++) { byte b = buf[i]; if (!bInEscape) { if (!bInText && b == '(') { bInText = true; } if (bInText && b == ')') { bInText = false; } if (b == '\\') { bInEscape = true; } if (!bInText && !bInEscape) { if (b == '/') { bInObjectIdent = true; } else if (bInObjectIdent && Character.isWhitespace((char) b)) { bInObjectIdent = false; // System.err.println(sbObjectName); // String object = sbObjectName.toString(); String objectName = sbObjectName.toString().substring(1); String newObjectName = objectName + "overlay"; baos.write('/'); baos.write(newObjectName.getBytes("ISO-8859-1")); objectNameMap.put(objectName, COSName.getPDFName(newObjectName)); sbObjectName.delete(0, sbObjectName.length()); } } if (bInObjectIdent) { sbObjectName.append((char) b); continue; } } else { bInEscape = false; } baos.write(b); } COSDictionary streamDict = new COSDictionary(); streamDict.setInt(COSName.LENGTH, baos.size()); COSStream output = new COSStream(streamDict, pdfDocument.getDocument().getScratchFile()); output.setFilters(stream.getFilters()); OutputStream os = output.createUnfilteredStream(); baos.writeTo(os); os.close(); return output; }