Java Reader Copy copyLarge(Reader input, Writer output, long limit)

Description

copy Large

License

Apache License

Declaration

public static long copyLarge(Reader input, Writer output, long limit)
            throws IOException 

Method Source Code

//package com.java2s;
/*//from   ww w. j  a v a2s. c om
 * 
 * 
 * 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.
 */

import java.io.IOException;

import java.io.Reader;

import java.io.Writer;

public class Main {
    private static final int DEFAULT_BUFFER_SIZE = 1024 * 4;

    public static long copyLarge(Reader input, Writer output, long limit)
            throws IOException {
        char[] buffer = new char[DEFAULT_BUFFER_SIZE];
        long count = 0;
        int n = 0;
        long remaining = limit;
        while (remaining > 0) {
            n = (remaining > DEFAULT_BUFFER_SIZE) ? input.read(buffer)
                    : input.read(buffer, 0, (int) remaining);
            if (n == -1) {
                break;
            }
            output.write(buffer, 0, n);
            count += n;
            remaining -= n;
        }
        return count;
    }
}

Related

1. copyLarge(Reader input, Writer output)
2. copyLarge(Reader input, Writer output, char[] buffer)
3. copyLarge(Reader input, Writer output, char[] buffer)
4. copyLarge(Reader input, Writer output, char[] buffer)
5. copyLarge(Reader input, Writer output, final long inputOffset, final long length, char[] buffer)