using System; using System.IO; using System.Text; using System.Collections; using System.util; using iTextSharp.text.xml.simpleparser; /* * Copyright 2005 by 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/ */ namespace iTextSharp.text.pdf.hyphenation { /** Parses the xml hyphenation pattern. * * @author Paulo Soares (psoares@consiste.pt) */ public class SimplePatternParser : ISimpleXMLDocHandler { internal int currElement; internal IPatternConsumer consumer; internal StringBuilder token; internal ArrayList exception; internal char hyphenChar; internal const int ELEM_CLASSES = 1; internal const int ELEM_EXCEPTIONS = 2; internal const int ELEM_PATTERNS = 3; internal const int ELEM_HYPHEN = 4; /** Creates a new instance of PatternParser2 */ public SimplePatternParser() { token = new StringBuilder(); hyphenChar = '-'; // default } public void Parse(Stream stream, IPatternConsumer consumer) { this.consumer = consumer; try { SimpleXMLParser.Parse(this, stream); } finally { try{stream.Close();}catch{} } } protected static String GetPattern(String word) { StringBuilder pat = new StringBuilder(); int len = word.Length; for (int i = 0; i < len; i++) { if (!char.IsDigit(word[i])) { pat.Append(word[i]); } } return pat.ToString(); } protected ArrayList NormalizeException(ArrayList ex) { ArrayList res = new ArrayList(); for (int i = 0; i < ex.Count; i++) { Object item = ex[i]; if (item is String) { String str = (String)item; StringBuilder buf = new StringBuilder(); for (int j = 0; j < str.Length; j++) { char c = str[j]; if (c != hyphenChar) { buf.Append(c); } else { res.Add(buf.ToString()); buf.Length = 0; char[] h = new char[1]; h[0] = hyphenChar; // we use here hyphenChar which is not necessarily // the one to be printed res.Add(new Hyphen(new String(h), null, null)); } } if (buf.Length > 0) { res.Add(buf.ToString()); } } else { res.Add(item); } } return res; } protected String GetExceptionWord(ArrayList ex) { StringBuilder res = new StringBuilder(); for (int i = 0; i < ex.Count; i++) { Object item = ex[i]; if (item is String) { res.Append((String)item); } else { if (((Hyphen)item).noBreak != null) { res.Append(((Hyphen)item).noBreak); } } } return res.ToString(); } protected static String GetInterletterValues(String pat) { StringBuilder il = new StringBuilder(); String word = pat + "a"; // add dummy letter to serve as sentinel int len = word.Length; for (int i = 0; i < len; i++) { char c = word[i]; if (char.IsDigit(c)) { il.Append(c); i++; } else { il.Append('0'); } } return il.ToString(); } public void EndDocument() { } public void EndElement(String tag) { if (token.Length > 0) { String word = token.ToString(); switch (currElement) { case ELEM_CLASSES: consumer.AddClass(word); break; case ELEM_EXCEPTIONS: exception.Add(word); exception = NormalizeException(exception); consumer.AddException(GetExceptionWord(exception), (ArrayList)exception.Clone()); break; case ELEM_PATTERNS: consumer.AddPattern(GetPattern(word), GetInterletterValues(word)); break; case ELEM_HYPHEN: // nothing to do break; } if (currElement != ELEM_HYPHEN) { token.Length = 0; } } if (currElement == ELEM_HYPHEN) { currElement = ELEM_EXCEPTIONS; } else { currElement = 0; } } public void StartDocument() { } public void StartElement(String tag, Hashtable h) { if (tag.Equals("hyphen-char")) { String hh = (String)h["value"]; if (hh != null && hh.Length == 1) { hyphenChar = hh[0]; } } else if (tag.Equals("classes")) { currElement = ELEM_CLASSES; } else if (tag.Equals("patterns")) { currElement = ELEM_PATTERNS; } else if (tag.Equals("exceptions")) { currElement = ELEM_EXCEPTIONS; exception = new ArrayList(); } else if (tag.Equals("hyphen")) { if (token.Length > 0) { exception.Add(token.ToString()); } exception.Add(new Hyphen((String)h["pre"], (String)h["no"], (String)h["post"])); currElement = ELEM_HYPHEN; } token.Length = 0; } public void Text(String str) { StringTokenizer tk = new StringTokenizer(str); while (tk.HasMoreTokens()) { String word = tk.NextToken(); // System.out.Println("\"" + word + "\""); switch (currElement) { case ELEM_CLASSES: consumer.AddClass(word); break; case ELEM_EXCEPTIONS: exception.Add(word); exception = NormalizeException(exception); consumer.AddException(GetExceptionWord(exception), (ArrayList)exception.Clone()); exception.Clear(); break; case ELEM_PATTERNS: consumer.AddPattern(GetPattern(word), GetInterletterValues(word)); break; } } } } }