OpenConcerto

Dépôt officiel du code source de l'ERP OpenConcerto
sonarqube

svn://code.openconcerto.org/openconcerto

Rev

Rev 149 | Blame | Compare with Previous | Last modification | View Log | RSS feed

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * 
 * Copyright 2011 OpenConcerto, by ILM Informatique. All rights reserved.
 * 
 * The contents of this file are subject to the terms of the GNU General Public License Version 3
 * only ("GPL"). You may not use this file except in compliance with the License. You can obtain a
 * copy of the License at http://www.gnu.org/licenses/gpl-3.0.html See the License for the specific
 * language governing permissions and limitations under the License.
 * 
 * When distributing the software, include this License Header Notice in each file.
 */
 
 package org.openconcerto.utils.prog;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class SVNUtils {

    public static void main(String[] args) throws IOException {
        if (args[0].equals("lastChangedRev")) {
            System.out.println(lastChangedRev(args[1]));
        } else {
            System.err.println("must choose a method");
        }
    }

    public static Process svn(String[] args) throws IOException {
        final String[] cmdNArgs = new String[args.length + 1];
        cmdNArgs[0] = "svn";
        System.arraycopy(args, 0, cmdNArgs, 1, args.length);
        return Runtime.getRuntime().exec(cmdNArgs);
    }

    public static String lastChangedRev(String path) throws IOException {
        final Process p = svn(new String[] { "info", path + "@HEAD" });

        final BufferedReader reader = new BufferedReader(new InputStreamReader(p.getInputStream()));
        String line;
        String res = null;
        while ((line = reader.readLine()) != null) {
            if (line.startsWith("Last Changed Rev"))
                res = line.substring(line.indexOf(':') + 1).trim();
        }
        return res;
    }

    // match placeholder $Rev$ fixed length $Rev:: $ and of course with value $Rev: 12 $
    // don't require to match to the end to allow callers to only know the start of the substitute
    // and to not bother with the pattern
    private static final Pattern KEYWORD_PATTERN = Pattern.compile("^\\$\\p{Alpha}+:{0,2}\\p{Blank}*(.*?)\\p{Blank}*\\$");

    /**
     * Return the value of the subversion keyword. E.g. use with
     * <code>private static final String REV = getKeywordValue("$Rev$")</code> (don't forget to
     * <code>svn propset svn:keywords</code>).
     * 
     * @param substitute the svn substitute, trailing characters not part of the keyword will be
     *        ignored, e.g. "$Rev: 12 $ other chars".
     * @return the value, empty string if none, e.g. "12".
     * @throws IllegalArgumentException if substitute is not valid.
     */
    public static String getKeywordValue(String substitute) throws IllegalArgumentException {
        final Matcher matcher = KEYWORD_PATTERN.matcher(substitute);
        if (!matcher.find())
            throw new IllegalArgumentException("SVN format not recognized");

        return matcher.group(1);
    }
}