Package org.jnode.build

Source Code of org.jnode.build.AbstractPluginTask$LibAlias

/*
* $Id$
*
* Copyright (C) 2003-2014 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.build;

import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.LinkedList;

import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Task;
import org.apache.tools.ant.taskdefs.Jar;
import org.apache.tools.ant.types.ZipFileSet;
import org.jnode.nanoxml.XMLElement;
import org.jnode.nanoxml.XMLParseException;
import org.jnode.plugin.Library;
import org.jnode.plugin.PluginDescriptor;
import org.jnode.plugin.PluginException;
import org.jnode.plugin.model.Factory;

/**
* @author Ewout Prangsma (epr@users.sourceforge.net)
*/
public abstract class AbstractPluginTask extends Task {

    protected String targetArch;
    private final LinkedList<LibAlias> aliases = new LinkedList<LibAlias>();

    /**
     * @return The target architecture
     */
    protected String getTargetArch() {
        return targetArch;
    }

    /**
     * @param string
     */
    public void setTargetArch(String string) {
        targetArch = string;
    }

    protected PluginDescriptor readDescriptor(File descriptor) {
        final PluginDescriptor descr;
        try {
            final XMLElement root = new XMLElement(new Hashtable<Object, Object>(), true, false);
            try {
                final FileReader r = new FileReader(descriptor);
                try {
                    root.parseFromReader(r);
                } finally {
                    r.close();
                }
            } catch (IOException ex) {
                throw new BuildException("Building " + descriptor + " failed", ex);
            } catch (XMLParseException ex) {
                throw new BuildException("Building " + descriptor + " failed", ex);
            }
            descr = Factory.parseDescriptor(root);
        } catch (PluginException ex) {
            ex.printStackTrace();
            throw new BuildException("Building " + descriptor + " failed", ex);
        }

        return descr;
    }

    protected void processLibrary(Jar jarTask, Library lib, HashMap<File, ZipFileSet> fileSets, File srcDir) {
        final String jarName = jarTask.getDestFile().getName();
        final File f = getLibraryFile(lib, srcDir);

        ZipFileSet fs = fileSets.get(f);
        if (fs == null) {
            fs = new ZipFileSet();
            if (f.isFile()) {
                fs.setSrc(f);
            } else {
                fs.setDir(f);
            }
            fileSets.put(f, fs);
            jarTask.addFileset(fs);
        }
        fs.createExclude().setName("**/package.html");

        final String[] excludes = lib.getExcludes();
        for (int i = 0; i < excludes.length; i++) {
            final String exclude = excludes[i];
            if (exclude.equals("*")) {
                fs.createExclude().setName("**/*");               
            } else {
                String exp = exclude.replace('.', '/');
                fs.createExclude().setName(exp + ".*");
                fs.createExclude().setName(exp + ".class");
                if (!exp.endsWith("*")) {
                    fs.createExclude().setName(exp + "*");
                } else {
                    fs.createExclude().setName(exp);
                }
            }
        }

        final String[] exports = lib.getExports();
        for (int i = 0; i < exports.length; i++) {
            final String export = exports[i];
            if (export.equals("*")) {
                checkPackageExists(jarName, export, f);
                fs.createInclude().setName("**/*");               
            } else {
                String exp = export.replace('.', '/');
                fs.createInclude().setName(exp + ".*");
                if (!exp.endsWith("*")) {
                    checkPackageExists(jarName, exp, f);
                    fs.createInclude().setName(exp + "*");
                } else {
                    checkPackageExists(jarName, exp, f);
                    fs.createInclude().setName(exp);
                }
            }
        }
    }
   
    /**
     * Gets the file described by the given library
     */
    protected File getLibraryFile(Library lib, File srcDir) {
        final LibAlias libAlias = getAlias(lib.getName());
        final File f;
        if (libAlias == null) {
            f = new File(srcDir, lib.getName());
            if (!f.exists()) {
                throw new BuildException(
                    "file not found " + f.getAbsoluteFile() + " because " + lib.getName() + " has no alias");
            }
        } else {
            f = libAlias.getAlias();
        }
        return f;
    }
   
    private void checkPackageExists(String jarName, final String export, File src) {
        String packageDir = export;
       
        if (!src.isFile()) {
            if (packageDir.endsWith("/*")) {
                packageDir = packageDir.substring(0, packageDir.length() - 2);
            } else if (packageDir.endsWith("*")) {
                packageDir = packageDir.substring(0, packageDir.length() - 1);
            }
           
            File f = new File(src, packageDir);
            if (!f.exists()) {
                f = new File(src, packageDir + ".class");
                if (!f.exists()) {
                    System.err.println("WARNING : " + jarName + " doesn't contain package " + export);
                }
            }
        }
    }

    protected File pluginDir;

    /**
     * @param file
     */
    public void setPluginDir(File file) {
        pluginDir = file;
    }

    /**
     * @return The plugin directory
     */
    protected File getPluginDir() {
        return pluginDir;
    }

    public LibAlias createLibAlias() {
        LibAlias a = new LibAlias();
        aliases.add(a);
        return a;
    }

    public LibAlias getAlias(String name) {
        for (LibAlias a : aliases) {
            if (name.equals(a.getName())) {
                return a;
            }
        }
        return null;
    }

    public static class LibAlias {
        private String name;
        private File alias;

        /**
         * @return The alias
         */
        public final File getAlias() {
            return this.alias;
        }

        /**
         * @param alias
         */
        public final void setAlias(File alias) {
            this.alias = alias;
        }

        /**
         * @return The name
         */
        public final String getName() {
            return this.name;
        }

        /**
         * @param name
         */
        public final void setName(String name) {
            this.name = name;
        }
    }
}
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