com.theoryinpractise.coffeescript.FileUtilities.java Source code

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Here is the source code for com.theoryinpractise.coffeescript.FileUtilities.java

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package com.theoryinpractise.coffeescript;

import com.google.common.collect.Lists;
import org.apache.commons.io.filefilter.SuffixFileFilter;
import org.apache.maven.model.FileSet;
import org.codehaus.plexus.util.FileUtils;

import java.io.File;
import java.io.FileFilter;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;

/**
 * Copyright 2011 Mark Derricutt.
 *
 * Contributing authors:
 *   Daniel Bower
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Utilities for working with Files and FileSets
 *
 */
public class FileUtilities {

    @SuppressWarnings("unchecked")
    public static List<File> getFilesFromFileSet(FileSet fileSet) throws IOException {
        List<File> files = Lists.newArrayList();

        try {
            File directory = new File(fileSet.getDirectory());
            String includes = getCommaSeparatedList(fileSet.getIncludes());
            String excludes = getCommaSeparatedList(fileSet.getExcludes());
            files = FileUtils.getFiles(directory, includes, excludes);
        } catch (IOException e) {
            throw new IOException("Unable to access files in fileSet", e);
        }

        return files;
    }

    /**
     * Turn a list of Strings into a concatenated string of filenames
     */
    public static String getCommaSeparatedList(List<String> list) {
        StringBuffer sb = new StringBuffer();

        for (Iterator<String> i = list.iterator(); i.hasNext();) {
            sb.append(i.next());
            if (i.hasNext()) {
                sb.append(",");
            }
        }

        return sb.toString();
    }

    /**
     * Turn a list of files into a comma separated list of filenames
     */
    public static String getCommaSeparatedListOfFileNames(List<File> fileList) {
        StringBuffer sb = new StringBuffer();

        for (Iterator<File> i = fileList.iterator(); i.hasNext();) {
            sb.append(i.next().getAbsolutePath());
            if (i.hasNext()) {
                sb.append(",");
            }
        }

        return sb.toString();
    }

    /**
     * Convenience Method for turn a string path containing .js files into a list of files to be processed
     * @param sourceDirectory
     */
    public static List<File> directoryToFileList(String sourceDirectory) {
        List<File> files = Lists.newArrayList();
        File srcDir = new File(sourceDirectory);

        if (srcDir.exists() && srcDir.isDirectory()) {
            File[] filesInSrcDir = srcDir.listFiles((FileFilter) new SuffixFileFilter(".js"));
            for (File file : filesInSrcDir) {
                files.add(file);
            }
        }

        return files;
    }

    /**
     * Convenience Method for turning a string path for a single file into a list of files to be processed
     * @param sourceFile
     */
    public static List<File> fileToFileList(String sourceFile) {
        List<File> files = Lists.newArrayList();
        File srcFile = new File(sourceFile);

        if (srcFile.exists() && srcFile.isFile()) {
            files.add(srcFile);
        }

        return files;
    }

    /**
     * Convenience Method for turning a FileSet into a list of files to be processed
     */
    public static List<File> fileSetToFileList(FileSet fileset) throws IOException {
        List<File> files = Lists.newArrayList();

        files.addAll(FileUtilities.getFilesFromFileSet(fileset));

        return files;
    }
}