| /* ClasspathToolParser.java -- Parser subclass for classpath tools |
| Copyright (C) 2006 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 gnu.classpath.tools.common; |
| |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.io.FileNotFoundException; |
| import java.io.FileReader; |
| import java.io.Reader; |
| import java.text.MessageFormat; |
| import java.util.ArrayList; |
| |
| import gnu.classpath.Configuration; |
| import gnu.classpath.tools.getopt.FileArgumentCallback; |
| import gnu.classpath.tools.getopt.Option; |
| import gnu.classpath.tools.getopt.OptionException; |
| import gnu.classpath.tools.getopt.Parser; |
| |
| /** |
| * This is like the Parser class, but is specialized for use by |
| * tools distributed with GNU Classpath. In particular it automatically |
| * computes the version string using the program's name. |
| */ |
| public class ClasspathToolParser |
| extends Parser |
| { |
| private static String getVersionString(String programName) |
| { |
| String fmt = (Messages.getString("ClasspathToolParser.VersionFormat")); //$NON-NLS-1$ |
| return MessageFormat.format(fmt, |
| new Object[] |
| { |
| programName, |
| Configuration.CLASSPATH_VERSION |
| }); |
| } |
| |
| public ClasspathToolParser(String programName) |
| { |
| this(programName, false); |
| } |
| |
| public ClasspathToolParser(String programName, boolean longOnly) |
| { |
| super(programName, getVersionString(programName), longOnly); |
| addFinal(new Option('J', |
| Messages.getString("ClasspathToolParser.JArgument"),//$NON-NLS-1$ |
| Messages.getString("ClasspathToolParser.JName"), //$NON-NLS-1$ |
| true) |
| { |
| public void parsed(String argument) throws OptionException |
| { |
| // -J should be handled by the wrapper binary. |
| // We add it here so that it shows up in the --help output. |
| } |
| }); |
| } |
| |
| public void parse(String[] inArgs, FileArgumentCallback files, |
| boolean handleFileLists) |
| { |
| FileArgumentCallback cb; |
| |
| if (handleFileLists) |
| cb = new AtFileArgumentCallback(files); |
| else |
| cb = files; |
| |
| parse(inArgs, cb); |
| } |
| |
| public String[] parse(String[] inArgs, boolean handleFileLists) |
| { |
| final ArrayList<String> fileResult = new ArrayList<String>(); |
| |
| final FileArgumentCallback cb = new FileArgumentCallback() |
| { |
| public void notifyFile(String fileArgument) |
| { |
| fileResult.add(fileArgument); |
| } |
| }; |
| |
| if (handleFileLists) |
| parse(inArgs, new AtFileArgumentCallback(cb)); |
| else |
| parse(inArgs, cb); |
| |
| return fileResult.toArray(new String[fileResult.size()]); |
| } |
| |
| |
| /** |
| * Simple function that takes the given {@link Reader}, treats it like |
| * a textfile and reads all the whitespace separated entries from it |
| * and adds them to the @{link FileArgumentCallback} instance. |
| * |
| * @param reader the reader to read from. |
| * @param cb the callback to post the filenames to. |
| * @throws OptionException if an error occurs reading the list. |
| */ |
| public void parseFileList(Reader reader, FileArgumentCallback cb) |
| throws OptionException |
| { |
| BufferedReader breader = new BufferedReader(reader); |
| String line = null; |
| |
| try |
| { |
| while ((line = breader.readLine()) != null) |
| parseLine(line, cb); |
| |
| reader.close(); |
| } |
| catch (IOException ioe) |
| { |
| throw new OptionException("I/O error while reading a file list", ioe); |
| } |
| |
| } |
| |
| /** |
| * Parses whitespace separated file entries. |
| * |
| * Note: This is not coping with whitespace in files or quoting. |
| * |
| * @param line the line of the file to parse. |
| * @param cb the callback to pass the parsed file to. |
| * @throws IOException if an I/O error occurs. |
| * @throws OptionException if an error occurs in the callback. |
| */ |
| private void parseLine(String line, FileArgumentCallback cb) |
| throws IOException, OptionException |
| { |
| final int length = line.length(); |
| int start = 0; |
| int end = 0; |
| |
| // While not reached end of line ... |
| while (start < length) |
| { |
| // Search for first non-whitespace character for the start of a word. |
| while (Character.isWhitespace(line.codePointAt(start))) |
| { |
| start++; |
| |
| if (start == length) |
| return; |
| } |
| |
| end = start + 1; |
| |
| // Search for first whitespace character for the end of a word. |
| while (end < length && !Character.isWhitespace(line.codePointAt(end))) |
| end++; |
| |
| cb.notifyFile(line.substring(start, end)); |
| |
| start = end + 1; |
| } |
| } |
| |
| /** |
| * Implementation of {@link FileArgumentCallback} that handles |
| * file arguments in {@link #notifyFile} starting with a <code>@</code> |
| * through {@link ClasspathToolParser#parseFileList}. |
| */ |
| class AtFileArgumentCallback extends FileArgumentCallback |
| { |
| FileArgumentCallback cb; |
| |
| AtFileArgumentCallback(FileArgumentCallback cb) |
| { |
| this.cb = cb; |
| } |
| |
| @Override |
| public void notifyFile(String fileArgument) |
| throws OptionException |
| { |
| if (fileArgument.codePointAt(0) == '@') |
| { |
| FileReader fr = null; |
| |
| try |
| { |
| fr = new FileReader(fileArgument.substring(1)); |
| } |
| catch (FileNotFoundException fnfe) |
| { |
| throw new OptionException("File not found: " + fileArgument.substring(1), |
| fnfe); |
| } |
| |
| ClasspathToolParser.this.parseFileList(fr, cb); |
| } |
| else |
| cb.notifyFile(fileArgument); |
| } |
| |
| } |
| |
| } |