| /* RTFParser.java -- |
| Copyright (C) 2005 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package javax.swing.text.rtf; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.Reader; |
| |
| import javax.swing.text.BadLocationException; |
| import javax.swing.text.Document; |
| |
| /** |
| * Parses an RTF file into a {@link Document}. The parser utilizes |
| * {@link RTFScanner}. |
| * |
| * @author Roman Kennke (roman@ontographics.com) |
| */ |
| class RTFParser |
| { |
| |
| /** |
| * Our scanner. |
| */ |
| private RTFScanner scanner; |
| |
| /** |
| * The document into which we parse. |
| */ |
| private Document doc; |
| |
| /** |
| * The current position. |
| */ |
| private int pos; |
| |
| /** |
| * Constructs a new RTFParser for the specified document and position, |
| * without initializing the scanner. This is only used internally. |
| * |
| * @param doc the {@link Document} into which we should parse |
| * @param pos the position to start |
| */ |
| private RTFParser(Document doc, int pos) |
| { |
| this.doc = doc; |
| this.pos = pos; |
| } |
| |
| /** |
| * Constructs a new RTFParser for the specified <code>stream</code>. |
| * |
| * @param stream the stream from which we parse |
| * @param doc the {@link Document} into which we should parse |
| * @param pos the position to start |
| */ |
| public RTFParser(InputStream stream, Document doc, int pos) |
| { |
| this(doc, pos); |
| scanner = new RTFScanner(stream); |
| } |
| |
| /** |
| * Constructs a new RTFParser for the specified <code>reader</code>. |
| * |
| * @param reader the reader from which we parse |
| * @param doc the {@link Document} into which we should parse |
| * @param pos the position to start |
| */ |
| public RTFParser(Reader reader, Document doc, int pos) |
| { |
| this(doc, pos); |
| scanner = new RTFScanner(reader); |
| } |
| |
| /** |
| * Returns the {@link Document} in which we parsed the RTF data. |
| * |
| * @return the {@link Document} in which we parsed the RTF data |
| */ |
| public Document getDocument() |
| { |
| return doc; |
| } |
| |
| /** |
| * Starts the parsing process. |
| */ |
| public void parse() |
| throws IOException, BadLocationException |
| { |
| parseFile(); |
| } |
| |
| /** |
| * The parse rules for <file>. |
| */ |
| private void parseFile() |
| throws IOException, BadLocationException |
| { |
| Token t1 = scanner.readToken(); |
| if (t1.type != Token.LCURLY) |
| throw new RTFParseException("expected left curly braces"); |
| |
| parseHeader(); |
| parseDocument(); |
| |
| Token t2 = scanner.peekToken(); |
| if (t2.type == Token.RCURLY) |
| { |
| // Eat the token. |
| scanner.readToken(); |
| } |
| else |
| { |
| // Ignore this for maximum robustness when file is broken. |
| System.err.println("RTF warning: expected right curly braces"); |
| } |
| |
| } |
| |
| /** |
| * The parse rules for <header>. |
| * |
| * TODO: implement this properly |
| */ |
| private void parseHeader() |
| //throws IOException, BadLocationException |
| { |
| // TODO add parse rules here |
| } |
| |
| |
| /** |
| * The parse rules for <document>. |
| * |
| * TODO: implement this properly |
| */ |
| private void parseDocument() |
| throws IOException, BadLocationException |
| { |
| // !!! TODO !!! |
| // This simply emits every TEXT Token as text to the document |
| // which is plain stupid |
| |
| boolean eof = false; |
| |
| do { |
| Token token = scanner.readToken(); |
| switch (token.type) |
| { |
| case Token.TEXT: |
| TextToken textToken = (TextToken) token; |
| doc.insertString(pos, textToken.text, null); |
| pos += textToken.text.length(); |
| break; |
| case Token.EOF: |
| eof = true; |
| break; |
| default: |
| // FIXME |
| break; |
| } |
| } while (!eof); |
| |
| } |
| |
| } |