From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- .../classpath/javax/swing/text/rtf/RTFScanner.java | 294 +++++++++++++++++++++ 1 file changed, 294 insertions(+) create mode 100644 libjava/classpath/javax/swing/text/rtf/RTFScanner.java (limited to 'libjava/classpath/javax/swing/text/rtf/RTFScanner.java') diff --git a/libjava/classpath/javax/swing/text/rtf/RTFScanner.java b/libjava/classpath/javax/swing/text/rtf/RTFScanner.java new file mode 100644 index 000000000..2eca159c4 --- /dev/null +++ b/libjava/classpath/javax/swing/text/rtf/RTFScanner.java @@ -0,0 +1,294 @@ +/* RTFScanner.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.BufferedReader; +import java.io.IOException; +import java.io.InputStream; +import java.io.InputStreamReader; +import java.io.Reader; + +/** + * Provides a scanner that scans an {@link InputStream} for tokens of the + * RTF syntax. + * + * This scanner is based upon the RTF specification 1.6 + * available at: + * + * + * RTF specification at MSDN + * + * @author Roman Kennke (roman@ontographics.com) + */ +class RTFScanner +{ + + /** + * The reader from which we read the RTF data. + */ + private Reader in; + + /** + * This is used to constuct strings from the read in chars. + */ + private StringBuffer buffer; + + /** + * Lookahead token. + */ + private Token lastToken; + + /** + * Constructs a new RTFScanner without initializing the {@link Reader}. + */ + private RTFScanner() + { + buffer = new StringBuffer(); + } + + /** + * Constructs a new RTFScanner for the given {@link InputStream}. + * The stream is wrapped into an {@link InputStreamReader} and if it's + * not yet buffered then the Reader is wrapped in a {@link BufferedReader} + * + * @param stream the {@link InputStream} to read RTF data from + */ + public RTFScanner(InputStream stream) + { + this(); + InputStreamReader reader = new InputStreamReader(stream); + in = new BufferedReader(reader); + } + + /** + * Constructs a new RTFScanner for the given {@link Reader}. + * + * If the reader is not an instance of {@link BufferedReader} then it + * is wrapped into a BufferedReader. + * + * @param reader the {@link BufferedReader} to read RTF data from + */ + public RTFScanner(Reader reader) + { + this(); + if (reader instanceof BufferedReader) + { + in = reader; + } + else + { + in = new BufferedReader(reader); + } + } + + /** + * Reads in the next {@link Token} from the stream. + * + * @return the read {@link Token} + * + * @throws IOException if the underlying stream has problems + */ + private Token readTokenImpl() + throws IOException + { + Token token = null; + + int c = in.read(); + switch(c) + { + case -1: + token = new Token(Token.EOF); + break; + + case '{': + token = new Token(Token.LCURLY); + break; + + case '}': + token = new Token(Token.RCURLY); + break; + + case '\\': + buffer.delete(0, buffer.length()); + buffer.append((char) c); + token = readControlWord(); + break; + + default: + buffer.delete(0, buffer.length()); + buffer.append((char) c); + token = readText(); + break; + } + + return token; + } + + Token peekToken() + throws IOException + { + lastToken = readTokenImpl(); + return lastToken; + } + + Token readToken() + throws IOException + { + Token token; + if (lastToken != null) + { + token = lastToken; + lastToken = null; + } + else + token = readTokenImpl(); + return token; + } + + /** + * Reads in a control word and optional parameter. + * + * @return the read in control word as {@link ControlWordToken} + * + * @throws IOException if the underlying stream has problems + */ + private Token readControlWord() + throws IOException + { + // this flag indicates if we are still reading the name or are already + // in the parameter + boolean readingName = true; + String name = null; + String param = null; + + while (true) + { + in.mark(1); + int c = in.read(); + + // check for 'a'..'z' + if (readingName && (c >= 'a') && (c <= 'z')) + { + buffer.append((char) c); + } + else if ((c >= '0') && (c <= '9')) + { + // if the last char was in the name, then finish reading the name + if (readingName) + { + name = buffer.toString(); + buffer.delete(0, buffer.length()); + readingName = false; + } + buffer.append((char) c); + } + else + { + // if we were in the name, then finish this + if (readingName) + { + name = buffer.toString(); + } + // otherwise finish the parameter + else + { + param = buffer.toString(); + } + + // clear up + buffer.delete(0, buffer.length()); + // reset input buffer to last char + in.reset(); + // break while loop + break; + } + } + + ControlWordToken token = null; + + if (param == null) + token = new ControlWordToken(name); + else + token =new ControlWordToken(name, Integer.parseInt(param)); + + return token; + + } + + /** + * Reads in a block of text. + * + * @return the token for the text + */ + private Token readText() + throws IOException + { + + boolean readingText = true; + while (readingText) + { + in.mark(1); + int c = in.read(); + switch(c) + { + case '\\': + case '{': + case '}': + case -1: + readingText = false; + in.reset(); + break; + + default: + buffer.append((char) c); + break; + } + + } + + String text = buffer.toString(); + Token token = new TextToken(text); + + buffer.delete(0, buffer.length()); + + return token; + + } +} -- cgit v1.2.3