001/* 002 * Copyright (c) 2006-2011 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * All rights reserved. This program and the accompanying materials 005 * are made available under the terms of the Eclipse Public License v1.0 006 * which accompanies this distribution, and is available at 007 * http://www.eclipse.org/legal/epl-v10.html 008 * 009 * Contributors: 010 * bstefanescu 011 * 012 * $Id$ 013 */ 014 015package org.nuxeo.ecm.platform.rendering.wiki; 016 017import java.io.IOException; 018import java.io.Writer; 019import java.util.ArrayList; 020import java.util.List; 021 022import org.apache.commons.logging.Log; 023import org.apache.commons.logging.LogFactory; 024import org.wikimodel.wem.IWikiPrinter; 025 026/** 027 * Special writer used to split the serialization result in dynamic or static segments. This way we can generate final 028 * output after parsing the entire file. This is needed for example to generate TOC. 029 * 030 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a> 031 */ 032public class WikiWriter implements IWikiPrinter, WikiText { 033 034 protected static final Log log = LogFactory.getLog(WikiWriter.class); 035 036 protected static final String LINE_SEP = System.getProperty("line.separator"); 037 038 protected WikiWriter parent; 039 040 protected final List<String> segments = new ArrayList<String>(); 041 042 protected final List<WikiText> dynamicSegments = new ArrayList<WikiText>(); 043 044 protected final StringBuilder buf = new StringBuilder(); 045 046 public WikiWriter() { 047 } 048 049 public WikiWriter(WikiWriter parent) { 050 this.parent = parent; 051 } 052 053 public void print(String str) { 054 buf.append(str); 055 } 056 057 public void println() { 058 buf.append(LINE_SEP); 059 } 060 061 public void println(String str) { 062 buf.append(str); 063 buf.append(LINE_SEP); 064 } 065 066 public void writeText(WikiText text) { 067 segments.add(buf.toString()); 068 buf.setLength(0); 069 dynamicSegments.add(text); 070 } 071 072 public WikiWriter getParent() { 073 return parent; 074 } 075 076 public StringBuilder getBuffer() { 077 return buf; 078 } 079 080 public void writeTo(WikiSerializerHandler handler, Writer writer) throws IOException { 081 for (int i = 0, len = segments.size(); i < len; i++) { 082 writer.write(segments.get(i)); 083 dynamicSegments.get(i).writeTo(handler, writer); 084 } 085 writer.write(buf.toString()); 086 } 087 088}