Android InputStream Copy copy(InputStream input, Writer output, String encoding)

Here you can find the source of copy(InputStream input, Writer output, String encoding)

Description

Copy and convert bytes from an InputStream to chars on a Writer, using the specified encoding.

License

Apache License

Parameter

Parameter Description
input the <code>InputStream</code> to read from
output the <code>Writer</code> to write to
encoding The name of a supported character encoding. See the <a href="http://www.iana.org/assignments/character-sets">IANA Charset Registry</a> for a list of valid encoding types.

Exception

Parameter Description
IOException In case of an I/O problem

Declaration

public static void copy(InputStream input, Writer output,
        String encoding) throws IOException 

Method Source Code

//package com.java2s;
/*//from  ww w.  j  a  va  2 s.com
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.Reader;
import java.io.StringReader;
import java.io.Writer;

public class Main {
    /**
     * The default size of the buffer.
     */
    private static final int DEFAULT_BUFFER_SIZE = 1024 * 4;

    /**
     * Copy bytes from a <code>byte[]</code> to an <code>OutputStream</code>.
     * @param input the byte array to read from
     * @param output the <code>OutputStream</code> to write to
     * @throws IOException In case of an I/O problem
     */
    public static void copy(byte[] input, OutputStream output)
            throws IOException {
        output.write(input);
    }

    /**
     * Copy and convert bytes from a <code>byte[]</code> to chars on a
     * <code>Writer</code>.
     * The platform's default encoding is used for the byte-to-char conversion.
     * @param input the byte array to read from
     * @param output the <code>Writer</code> to write to
     * @throws IOException In case of an I/O problem
     */
    public static void copy(byte[] input, Writer output) throws IOException {
        ByteArrayInputStream in = new ByteArrayInputStream(input);
        copy(in, output);
    }

    /**
     * Copy and convert bytes from a <code>byte[]</code> to chars on a
     * <code>Writer</code>, using the specified encoding.
     * @param input the byte array to read from
     * @param output the <code>Writer</code> to write to
     * @param encoding The name of a supported character encoding. See the
     * <a href="http://www.iana.org/assignments/character-sets">IANA
     * Charset Registry</a> for a list of valid encoding types.
     * @throws IOException In case of an I/O problem
     */
    public static void copy(byte[] input, Writer output, String encoding)
            throws IOException {
        ByteArrayInputStream in = new ByteArrayInputStream(input);
        copy(in, output, encoding);
    }

    /**
     * Copy bytes from an <code>InputStream</code> to an
     * <code>OutputStream</code>.
     * @param input the <code>InputStream</code> to read from
     * @param output the <code>OutputStream</code> to write to
     * @return the number of bytes copied
     * @throws IOException In case of an I/O problem
     */
    public static int copy(InputStream input, OutputStream output)
            throws IOException {
        byte[] buffer = new byte[DEFAULT_BUFFER_SIZE];
        int count = 0;
        int n = 0;
        while (-1 != (n = input.read(buffer))) {
            output.write(buffer, 0, n);
            count += n;
        }
        return count;
    }

    /**
     * Copy chars from a <code>Reader</code> to a <code>Writer</code>.
     * @param input the <code>Reader</code> to read from
     * @param output the <code>Writer</code> to write to
     * @return the number of characters copied
     * @throws IOException In case of an I/O problem
     */
    public static int copy(Reader input, Writer output) throws IOException {
        char[] buffer = new char[DEFAULT_BUFFER_SIZE];
        int count = 0;
        int n = 0;
        while (-1 != (n = input.read(buffer))) {
            output.write(buffer, 0, n);
            count += n;
        }
        return count;
    }

    /**
     * Copy and convert bytes from an <code>InputStream</code> to chars on a
     * <code>Writer</code>.
     * The platform's default encoding is used for the byte-to-char conversion.
     * @param input the <code>InputStream</code> to read from
     * @param output the <code>Writer</code> to write to
     * @throws IOException In case of an I/O problem
     */
    public static void copy(InputStream input, Writer output)
            throws IOException {
        InputStreamReader in = new InputStreamReader(input);
        copy(in, output);
    }

    /**
     * Copy and convert bytes from an <code>InputStream</code> to chars on a
     * <code>Writer</code>, using the specified encoding.
     * @param input the <code>InputStream</code> to read from
     * @param output the <code>Writer</code> to write to
     * @param encoding The name of a supported character encoding. See the
     * <a href="http://www.iana.org/assignments/character-sets">IANA
     * Charset Registry</a> for a list of valid encoding types.
     * @throws IOException In case of an I/O problem
     */
    public static void copy(InputStream input, Writer output,
            String encoding) throws IOException {
        InputStreamReader in = new InputStreamReader(input, encoding);
        copy(in, output);
    }

    /**
     * Serialize chars from a <code>Reader</code> to bytes on an
     * <code>OutputStream</code>, and flush the <code>OutputStream</code>.
     * @param input the <code>Reader</code> to read from
     * @param output the <code>OutputStream</code> to write to
     * @throws IOException In case of an I/O problem
     */
    public static void copy(Reader input, OutputStream output)
            throws IOException {
        OutputStreamWriter out = new OutputStreamWriter(output);
        copy(input, out);
        // XXX Unless anyone is planning on rewriting OutputStreamWriter, we
        // have to flush here.
        out.flush();
    }

    /**
     * Serialize chars from a <code>String</code> to bytes on an
     * <code>OutputStream</code>, and
     * flush the <code>OutputStream</code>.
     * @param input the <code>String</code> to read from
     * @param output the <code>OutputStream</code> to write to
     * @throws IOException In case of an I/O problem
     */
    public static void copy(String input, OutputStream output)
            throws IOException {
        StringReader in = new StringReader(input);
        OutputStreamWriter out = new OutputStreamWriter(output);
        copy(in, out);
        // XXX Unless anyone is planning on rewriting OutputStreamWriter, we
        // have to flush here.
        out.flush();
    }

    /**
     * Copy chars from a <code>String</code> to a <code>Writer</code>.
     * @param input the <code>String</code> to read from
     * @param output the <code>Writer</code> to write to
     * @throws IOException In case of an I/O problem
     */
    public static void copy(String input, Writer output) throws IOException {
        output.write(input);
    }
}

Related

  1. copy(InputStream in, OutputStream out)
  2. copy(InputStream in, OutputStream out)
  3. copy(InputStream in, OutputStream out)
  4. copy(InputStream input, OutputStream output)
  5. copy(InputStream input, Writer output)
  6. copy(InputStream inputStream, OutputStream outputStream)
  7. copy(InputStream pSourceStream, OutputStream pTargetStream)
  8. copy(InputStream pSourceStream, OutputStream pTargetStream, boolean closeSource)
  9. copyContents(InputStream in, OutputStream out)