com.r573.enfili.common.io.file.FileHelper.java Source code

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Here is the source code for com.r573.enfili.common.io.file.FileHelper.java

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/*
 * Enfili
 * Project hosted at https://github.com/ryanhosp/enfili/
 * Copyright 2013 Ho Siaw Ping Ryan
 *    
 * 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.
 */
package com.r573.enfili.common.io.file;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.Collection;
import java.util.List;

import org.apache.commons.io.FileUtils;
import org.apache.commons.io.IOUtils;

public class FileHelper {

    /**
     * 0: dir not created because it already exists 1: dir created -1: dir needs
     * to be created, but failed
     * 
     * @param dir
     * @return
     */
    public static int mkdirIfNotExists(File dir) {
        if (!dir.exists()) {
            if (dir.mkdirs()) {
                return 1;
            } else {
                return -1;
            }
        } else {
            return 0;
        }
    }

    public static void copyAllFilesInFolder(File srcFolder, File destFolder) {
        try {
            if (!srcFolder.exists()) {
                // TODO: ignore for now. Figure out the appropriate error
                // handling for this later
                return;
            }
            Collection<File> files = FileUtils.listFiles(srcFolder, null, true);
            for (File file : files) {
                File destFile = new PathBuilder(destFolder.getPath()).append(file.getName()).toFile();
                FileUtils.copyFile(file, destFile);
            }
        } catch (IOException e) {
            throw new FileOpException(e);
        }
    }

    public static void deleteDirectory(File dir) {
        try {
            FileUtils.deleteDirectory(dir);
        } catch (IOException e) {
            throw new FileOpException(e);
        }
    }

    public static Collection<File> getAllFilesRecursively(File dir) {
        Collection<File> files = FileUtils.listFiles(dir, null, true);
        return files;
    }

    public static String readTextFromStream(InputStream stream) {
        try {
            List<String> lines = IOUtils.readLines(stream);
            StringBuilder sb = new StringBuilder();
            for (String line : lines) {
                sb.append(line);
                sb.append("\n");
            }
            return sb.toString();
        } catch (IOException e) {
            throw new FileOpException(e);
        }
    }

    public static void writeTextFile(File file, String content) {
        try {
            FileUtils.write(file, content, "UTF-8");
        } catch (IOException e) {
            throw new FileOpException(e);
        }
    }

    public static void writeTextFile(String filePath, String content) {
        writeTextFile(new File(filePath), content);
    }

    public static String combinePath(String parent, String child) {
        return new PathBuilder(parent).append(child).toPath();
    }
}