/*

 * Copyright 2007 Sun Microsystems, Inc.  All Rights Reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Sun designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Sun in the LICENSE file that accompanied this code.

 *

 * This code 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

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

import java.io.File;

import java.util.ArrayList;

import java.util.List;

import org.apache.tools.ant.BuildException;

import org.apache.tools.ant.DirectoryScanner;

import org.apache.tools.ant.Project;

import org.apache.tools.ant.taskdefs.MatchingTask;

public class CompilePropertiesTask extends MatchingTask {

    public void setSrcDir(File srcDir) {

        this.srcDir = srcDir;

    }

    public void setDestDir(File destDir) {

        this.destDir = destDir;

    }

    public void setSuperclass(String superclass) {

        this.superclass = superclass;

    }

    public void execute() {

        CompileProperties.Log log = new CompileProperties.Log() {

            public void error(String msg, Exception e) {

                log(msg, Project.MSG_ERR);

            }

            public void info(String msg) {

                log(msg, Project.MSG_INFO);

            }

            public void verbose(String msg) {

                log(msg, Project.MSG_VERBOSE);

            }

        };

        List<String> mainOpts = new ArrayList<String>();

        int count = 0;

        DirectoryScanner s = getDirectoryScanner(srcDir);

        for (String path: s.getIncludedFiles()) {

            if (path.endsWith(".properties")) {

                String destPath =

                        path.substring(0, path.length() - ".properties".length()) +

                        ".java";

                File srcFile = new File(srcDir, path);

                File destFile = new File(destDir, destPath);

                // Arguably, the comparison in the next line should be ">", not ">="

                // but that assumes the resolution of the last modified time is fine

                // grained enough; in practice, it is better to use ">=".

                if (destFile.exists() && destFile.lastModified() >= srcFile.lastModified())

                    continue;

                destFile.getParentFile().mkdirs();

                mainOpts.add("-compile");

                mainOpts.add(srcFile.getPath());

                mainOpts.add(destFile.getPath());

                mainOpts.add(superclass);

                count++;

            }

        }

        if (mainOpts.size() > 0) {

            log("Generating " + count + " resource files to " + destDir, Project.MSG_INFO);

            CompileProperties cp = new CompileProperties();

            cp.setLog(log);

            boolean ok = cp.run((String[])mainOpts.toArray(new String[mainOpts.size()]));

            if (!ok)

                throw new BuildException("CompileProperties failed.");

        }

    }

    private File srcDir;

    private File destDir;

    private String superclass = "java.util.ListResourceBundle";

}