From 6025b6016517c6d898d8957d1d7e03ba71431912 Mon Sep 17 00:00:00 2001 From: tknall Date: Fri, 1 Dec 2006 12:20:24 +0000 Subject: Initial import of release 2.2. git-svn-id: https://joinup.ec.europa.eu/svn/pdf-as/trunk@4 7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c --- .../com/lowagie/text/pdf/PdfReaderInstance.java | 182 +++++++++++++++++++++ 1 file changed, 182 insertions(+) create mode 100644 src/main/java/com/lowagie/text/pdf/PdfReaderInstance.java (limited to 'src/main/java/com/lowagie/text/pdf/PdfReaderInstance.java') diff --git a/src/main/java/com/lowagie/text/pdf/PdfReaderInstance.java b/src/main/java/com/lowagie/text/pdf/PdfReaderInstance.java new file mode 100644 index 0000000..294e52d --- /dev/null +++ b/src/main/java/com/lowagie/text/pdf/PdfReaderInstance.java @@ -0,0 +1,182 @@ +/* + * $Id: PdfReaderInstance.java,v 1.52 2005/11/01 12:27:05 psoares33 Exp $ + * $Name: $ + * + * Copyright 2001, 2002 Paulo Soares + * + * The contents of this file are subject to the Mozilla Public License Version 1.1 + * (the "License"); you may not use this file except in compliance with the License. + * You may obtain a copy of the License at http://www.mozilla.org/MPL/ + * + * Software distributed under the License is distributed on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License + * for the specific language governing rights and limitations under the License. + * + * The Original Code is 'iText, a free JAVA-PDF library'. + * + * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by + * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie. + * All Rights Reserved. + * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer + * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved. + * + * Contributor(s): all the names of the contributors are added in the source code + * where applicable. + * + * Alternatively, the contents of this file may be used under the terms of the + * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the + * provisions of LGPL are applicable instead of those above. If you wish to + * allow use of your version of this file only under the terms of the LGPL + * License and not to allow others to use your version of this file under + * the MPL, indicate your decision by deleting the provisions above and + * replace them with the notice and other provisions required by the LGPL. + * If you do not delete the provisions above, a recipient may use your version + * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE. + * + * This library is free software; you can redistribute it and/or modify it + * under the terms of the MPL as stated above or under the terms of the GNU + * Library General Public License as published by the Free Software Foundation; + * either version 2 of the License, or any later version. + * + * This library is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS + * FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more + * details. + * + * If you didn't download this code from the following link, you should check if + * you aren't using an obsolete version: + * http://www.lowagie.com/iText/ + */ + +package com.lowagie.text.pdf; +import java.util.ArrayList; +import java.util.HashMap; +import java.util.Iterator; +import java.io.*; +/** + * Instance of PdfReader in each output document. + * + * @author Paulo Soares (psoares@consiste.pt) + */ +class PdfReaderInstance { + static final PdfLiteral IDENTITYMATRIX = new PdfLiteral("[1 0 0 1 0 0]"); + static final PdfNumber ONE = new PdfNumber(1); + int myXref[]; + PdfReader reader; + RandomAccessFileOrArray file; + HashMap importedPages = new HashMap(); + PdfWriter writer; + HashMap visited = new HashMap(); + ArrayList nextRound = new ArrayList(); + + PdfReaderInstance(PdfReader reader, PdfWriter writer) { + this.reader = reader; + this.writer = writer; + file = reader.getSafeFile(); + myXref = new int[reader.getXrefSize()]; + } + + PdfReader getReader() { + return reader; + } + + PdfImportedPage getImportedPage(int pageNumber) { + if (pageNumber < 1 || pageNumber > reader.getNumberOfPages()) + throw new IllegalArgumentException("Invalid page number"); + Integer i = new Integer(pageNumber); + PdfImportedPage pageT = (PdfImportedPage)importedPages.get(i); + if (pageT == null) { + pageT = new PdfImportedPage(this, writer, pageNumber); + importedPages.put(i, pageT); + } + return pageT; + } + + int getNewObjectNumber(int number, int generation) { + if (myXref[number] == 0) { + myXref[number] = writer.getIndirectReferenceNumber(); + nextRound.add(new Integer(number)); + } + return myXref[number]; + } + + RandomAccessFileOrArray getReaderFile() { + return file; + } + + PdfObject getResources(int pageNumber) { + PdfObject obj = PdfReader.getPdfObjectRelease(reader.getPageNRelease(pageNumber).get(PdfName.RESOURCES)); + return obj; + } + + + PdfStream getFormXObject(int pageNumber) throws IOException { + PdfDictionary page = reader.getPageNRelease(pageNumber); + PdfObject contents = PdfReader.getPdfObjectRelease(page.get(PdfName.CONTENTS)); + PdfDictionary dic = new PdfDictionary(); + byte bout[] = null; + if (contents != null) { + if (contents.isStream()) + dic.putAll((PRStream)contents); + else + bout = reader.getPageContent(pageNumber, file); + } + else + bout = new byte[0]; + dic.put(PdfName.RESOURCES, PdfReader.getPdfObjectRelease(page.get(PdfName.RESOURCES))); + dic.put(PdfName.TYPE, PdfName.XOBJECT); + dic.put(PdfName.SUBTYPE, PdfName.FORM); + PdfImportedPage impPage = (PdfImportedPage)importedPages.get(new Integer(pageNumber)); + dic.put(PdfName.BBOX, new PdfRectangle(impPage.getBoundingBox())); + PdfArray matrix = impPage.getMatrix(); + if (matrix == null) + dic.put(PdfName.MATRIX, IDENTITYMATRIX); + else + dic.put(PdfName.MATRIX, matrix); + dic.put(PdfName.FORMTYPE, ONE); + PRStream stream; + if (bout == null) { + stream = new PRStream((PRStream)contents, dic); + } + else { + stream = new PRStream(reader, bout); + stream.putAll(dic); + } + return stream; + } + + void writeAllVisited() throws IOException { + while (nextRound.size() > 0) { + ArrayList vec = nextRound; + nextRound = new ArrayList(); + for (int k = 0; k < vec.size(); ++k) { + Integer i = (Integer)vec.get(k); + if (!visited.containsKey(i)) { + visited.put(i, null); + int n = i.intValue(); + writer.addToBody(reader.getPdfObjectRelease(n), myXref[n]); + } + } + } + } + + void writeAllPages() throws IOException { + try { + file.reOpen(); + for (Iterator it = importedPages.values().iterator(); it.hasNext();) { + PdfImportedPage ip = (PdfImportedPage)it.next(); + writer.addToBody(ip.getFormXObject(), ip.getIndirectReference()); + } + writeAllVisited(); + } + finally { + try { + reader.close(); + file.close(); + } + catch (Exception e) { + //Empty on purpose + } + } + } +} \ No newline at end of file -- cgit v1.2.3