Android UTF8 File Write writeStringToUtf8(final String str, final OutputStream out)

Description

write String To Utf

License

Apache License

Declaration

final static void writeStringToUtf8(final String str,
            final OutputStream out) throws IOException 

Method Source Code

//package com.java2s;
/**//www .j  av a2  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.IOException;
import java.io.OutputStream;

public class Main {
    final static void writeStringToUtf8(final String str,
            final OutputStream out) throws IOException {
        final int length = str.length();
        int i = 0;
        char c;
        while (i < length) {
            c = str.charAt(i++);
            if (c < 0x80) {
                out.write(c);
                continue;
            }
            if ((c >= 0xD800 && c <= 0xDBFF)
                    || (c >= 0xDC00 && c <= 0xDFFF)) {
                //No Surrogates in sun java
                out.write(0x3f);
                continue;
            }
            char ch;
            int bias;
            int write;
            if (c > 0x07FF) {
                ch = (char) (c >>> 12);
                write = 0xE0;
                if (ch > 0) {
                    write |= (ch & 0x0F);
                }
                out.write(write);
                write = 0x80;
                bias = 0x3F;
            } else {
                write = 0xC0;
                bias = 0x1F;
            }
            ch = (char) (c >>> 6);
            if (ch > 0) {
                write |= (ch & bias);
            }
            out.write(write);
            out.write(0x80 | ((c) & 0x3F));

        }

    }
}

Related

1. writeCharToUtf8(final char c, final OutputStream out)