net.przemkovv.sphinx.Utils.java Source code

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Here is the source code for net.przemkovv.sphinx.Utils.java

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/*
 * The MIT License
 *
 * Copyright 2013 Przemyslaw Walkowiak <przemyslaw.walkowiak@put.poznan.pl>.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package net.przemkovv.sphinx;

import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import net.przemkovv.sphinx.compiler.SourceFile;
import org.apache.commons.io.FileUtils;

/**
 *
 * @author Przemyslaw Walkowiak <przemyslaw.walkowiak@put.poznan.pl>
 */
public class Utils {

    public static File createRandomTempDirectory() throws IOException {

        return createRandomTempDirectory(null, null);
    }

    public static File createRandomTempDirectory(String prefix) throws IOException {

        return createRandomTempDirectory(prefix, null);
    }

    public static File createRandomTempDirectory(String prefix, String tmp_dir) throws IOException {
        final File temp;
        File tmp_dir_file = null;
        if (tmp_dir != null && !tmp_dir.isEmpty()) {
            tmp_dir_file = new File(tmp_dir);
        }
        temp = File.createTempFile(prefix, null, tmp_dir_file);
        if (!(temp.delete())) {
            throw new IOException("Could not delete temp file: " + temp.getAbsolutePath());
        }
        if (!(temp.mkdir())) {
            throw new IOException("Could not create temp directory: " + temp.getAbsolutePath());
        }
        return (temp);
    }

    public static List<File> prepareFilesystem(List<SourceFile> source_files, String dir_prefix)
            throws IOException {
        File temp_dir = createRandomTempDirectory(dir_prefix);
        List<File> files = new ArrayList<>();
        for (SourceFile source_file : source_files) {
            File src_file = new File(temp_dir, source_file.filename);
            FileUtils.writeStringToFile(src_file, source_file.source);
            files.add(src_file);
        }
        return files;
    }

    public static void cleanupFilesystem(List<File> files) {
        if (files != null && !files.isEmpty()) {
            File parent_dir = files.get(0).getParentFile();
            for (File file : files) {
                file.delete();
            }
            parent_dir.delete();

        }
    }

    public static String readAllFromInputStream(InputStream inputStream) throws IOException {
        StringBuilder output;
        try (BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream))) {
            output = new StringBuilder();
            String line;
            while ((line = reader.readLine()) != null) {
                output.append(line);
                output.append(System.getProperty("line.separator"));
            }

        }
        return output.toString();
    }

    public static List<String> readAllFromInputStreamAsList(InputStream inputStream) throws IOException {
        List<String> output;
        try (BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream))) {
            output = new ArrayList<>();
            String line;
            while ((line = reader.readLine()) != null) {
                output.add(line);
            }

        }
        return output;
    }

}