fi.johannes.kata.ocr.utils.files.ExistingFileConnection.java Source code

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Here is the source code for fi.johannes.kata.ocr.utils.files.ExistingFileConnection.java

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/*
 * The MIT License
 *
 * Copyright 2016 Johannes Sarpola.
 *
 * 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 fi.johannes.kata.ocr.utils.files;

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardOpenOption;
import java.util.List;
import org.apache.commons.io.FilenameUtils;

/**
 * Combines the necessary methods for a file and make sure that a file exists
 * 
 * @author Johannes Sarpola <johannes.sarpola at gmail.com>
 * @date Jun 30, 2016
 */
public class ExistingFileConnection {

    Path p;

    public ExistingFileConnection(String path) throws FileNotFoundException {
        p = Paths.get(path);
        testExistence();
    }

    public ExistingFileConnection(Path path) throws FileNotFoundException {
        p = path;
        testExistence();
    }

    public List<String> readLines() throws IOException {
        return Files.readAllLines(p);
    }

    public BufferedReader createReader() throws IOException {
        return Files.newBufferedReader(p);
    }

    public void appendLines(List<String> lines) throws IOException {
        Files.write(p, lines, StandardOpenOption.APPEND);
    }

    public void writeNew(List<String> lines) throws IOException {
        Files.delete(p);
        Files.write(p, lines, StandardOpenOption.CREATE);
    }

    public String getExtension() {
        String ext = FilenameUtils.getExtension(p.toString());
        return ext;
    }

    public void delete() throws IOException {
        Files.delete(p);
    }

    private void testExistence() throws FileNotFoundException {
        if (Files.exists(p))
            ;
        else {
            throw new FileNotFoundException();
        }
    }
}