Java InputStreamReader Create getReader(String name, String extension)

Description

get Reader

License

Open Source License

Declaration

public static Reader getReader(String name, String extension) throws IOException 

Method Source Code

//package com.java2s;
/*//from   w w  w.  j av a 2 s.  c  o m
 * Copyright (C) 2012 by Bram Gotink <bram.gotink@vtk.be>
 *
 * 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.
 */

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.util.zip.GZIPInputStream;

public class Main {
    public static Reader getReader(String name, String extension) throws IOException {
        File f = new File(name);
        if (f.exists())
            return new FileReader(f);

        f = new File(name + extension);
        if (f.exists())
            return new FileReader(f);

        f = new File(name + ".gz");
        if (!f.exists())
            f = new File(name + extension + ".gz");

        if (!f.exists())
            throw new FileNotFoundException(
                    "Can't find a file named \"" + name + "\", with extension \"" + extension + "\".");

        FileInputStream fis = new FileInputStream(f);
        InputStream gis = new GZIPInputStream(fis);
        return new InputStreamReader(gis);
    }
}

Related

1. getReader(final File file)
2. getReader(final InputStream is)
3. getReaderForFile(IFile file)
4. readTextFile(File f)
5. readTextFile(File f)
6. readTextFile(File f)