Java Is Text File isTextFile(File f, int length)

Description

is Text File

License

Open Source License

Declaration

public static boolean isTextFile(File f, int length) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright (c) 2007 Exadel, Inc. and Red Hat, Inc.
 * Distributed under license by Red Hat, Inc. All rights reserved.
 * This program is made available under the terms of the
 * Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:/* w  w  w . jav  a 2s  . c  om*/
 *     Exadel, Inc. and Red Hat, Inc. - initial API and implementation
 ******************************************************************************/

import java.io.BufferedReader;
import java.io.File;

import java.io.FileReader;

import java.io.IOException;

public class Main {
    public static boolean isTextFile(File f, int length) {
        if (!f.isFile())
            return false;
        BufferedReader br = null;
        try {
            FileReader fr = new FileReader(f);
            br = new BufferedReader(fr);
            int l = (int) f.length();
            if (l > length)
                l = length;
            char[] cs = new char[l];
            br.read(cs, 0, l);
            br.close();
            fr.close();
            return isText(new String(cs));
        } catch (IOException e) {
            return false;
        } finally {
            if (br != null) {
                try {
                    br.close();
                } catch (IOException e) {
                    // ignore
                }
            }
        }
    }

    public static boolean isText(String body) {
        if (body == null)
            return false;
        int l = body.length();
        for (int i = 0; i < l; i++) {
            char c = body.charAt(i);
            if (((int) c) < 32 && c != '\n' && c != '\r' && c != 't')
                return false;
        }
        return true;
    }
}

Related

1. isText(File file)
2. isText(File file)
3. isTextFile(File f)
4. isTextFile(File file)
5. isTextFile(File file)