com.dragome.compiler.utils.FileManager.java Source code

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Here is the source code for com.dragome.compiler.utils.FileManager.java

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/*******************************************************************************
 * Copyright (c) 2011-2014 Fernando Petrola
 * 
 * This file is part of Dragome SDK.
 * 
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Public License v3.0
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/gpl.html
 ******************************************************************************/

// Copyright 2011 The j2js Authors. All Rights Reserved.
//
// This file is part of j2js.
//
// j2js 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 3 of the License, or
// (at your option) any later version.
//
// j2js 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 j2js. If not, see <http://www.gnu.org/licenses/>.

package com.dragome.compiler.utils;

import java.io.File;
import java.io.FileFilter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Enumeration;
import java.util.List;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;

import org.apache.commons.io.FileUtils;
import org.apache.commons.io.filefilter.DirectoryFileFilter;
import org.apache.commons.io.filefilter.WildcardFileFilter;

import com.dragome.compiler.DragomeJsCompiler;

public class FileManager {

    private List<Object> path = new ArrayList<Object>();
    private FileFilter classpathFilter;

    public FileManager(List<File> classPath, FileFilter classpathFilter) {
        this.classpathFilter = classpathFilter;
        Log.getLogger().debug("Resolving class path " + classPath);

        for (File file : classPath) {
            if (!file.exists()) {
                DragomeJsCompiler.errorCount++;
                Log.getLogger().error("Cannot find resource on class path: " + file.getAbsolutePath());
                continue;
            }

            if (file.getName().endsWith(".jar")) {
                try {
                    path.add(new JarFile(file));
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            } else {
                path.add(file);
            }
        }
    }

    public FileObject getFileForInput(String relativeName) {
        for (Object o : path) {
            if (o instanceof JarFile) {
                JarFile jarFile = (JarFile) o;
                JarEntry entry = jarFile.getJarEntry(relativeName);
                if (entry != null) {
                    return new FileObject(jarFile, entry);
                }
            } else {
                File file = new File(((File) o), relativeName);
                if (file.exists()) {
                    return new FileObject(file);
                }
            }
        }

        throw new RuntimeException("Could not find " + relativeName + " on class path");
    }

    private static List<String> findClassesInJar(JarFile jarFile) {
        ArrayList<String> result = new ArrayList<String>();

        final Enumeration<JarEntry> entries = jarFile.entries();
        while (entries.hasMoreElements()) {
            final JarEntry entry = entries.nextElement();
            final String entryName = entry.getName();
            if (entryName.endsWith(".class"))
                result.add(entryName.replace('/', File.separatorChar).replace(".class", ""));
        }

        return result;
    }

    public Collection<String> getAllFilesInClasspath() {
        Collection<String> files = new ArrayList<String>();
        for (Object o : path) {
            if (o instanceof JarFile) {
                JarFile jarFile = (JarFile) o;

                List<String> classesInJar = findClassesInJar(jarFile);

                for (String file : classesInJar) {
                    if (classpathFilter == null || classpathFilter.accept(new File(file))) {
                        files.add(file);
                    }
                }
            } else {
                File folder = (File) o;
                Collection<File> listFiles = FileUtils.listFiles(folder, new WildcardFileFilter("*.class"),
                        DirectoryFileFilter.DIRECTORY);
                for (File file : listFiles) {
                    if (classpathFilter == null || classpathFilter.accept(file)) {
                        String substring = file.toString().substring(folder.toString().length() + 1);
                        files.add(substring.replace(".class", ""));
                    }
                }
            }
        }
        return files;
    }
}