Java UTF8 Convert To utfToChars(byte[] src, int srcIndex, char[] dst, int dstIndex, int len)

Description

Convert `len' bytes from utf8 to characters.

License

Apache License

Parameter

Parameter	Description
src	The array holding the bytes to convert.
srcIndex	The start index from which bytes are converted.
dst	The array holding the converted characters.
dstIndex	The start index from which converted characters are written.
len	The maximum number of bytes to convert.

Return

First index in `dst' past the last copied char.

Declaration

public static int utfToChars(byte[] src, int srcIndex, char[] dst, int dstIndex, int len) 

Method Source Code

//package com.java2s;
/*/*from  w ww.  j a  v a2s  .  co m*/
 * Copyright 2013 Alexander Shabanov - http://alexshabanov.com.
 * 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
 *
 * 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.
 */

public class Main {
    /**
     * Convert `len' bytes from utf8 to characters.
     * Parameters are as in {@see System#arraycopy}
     * @param src       The array holding the bytes to convert.
     * @param srcIndex  The start index from which bytes are converted.
     * @param dst       The array holding the converted characters.
     * @param dstIndex  The start index from which converted characters are written.
     * @param len       The maximum number of bytes to convert.
     * @return First index in `dst' past the last copied char.
     */
    public static int utfToChars(byte[] src, int srcIndex, char[] dst, int dstIndex, int len) {
        int i = srcIndex;
        int j = dstIndex;
        int limit = srcIndex + len;
        while (i < limit) {
            int b = src[i++] & 0xFF;
            if (b >= 0xE0) {
                b = (b & 0x0F) << 12;
                b = b | (src[i++] & 0x3F) << 6;
                b = b | (src[i++] & 0x3F);
            } else if (b >= 0xC0) {
                b = (b & 0x1F) << 6;
                b = b | (src[i++] & 0x3F);
            }
            dst[j++] = (char) b;
        }
        return j;
    }
}

Related

1. UTF8ToCodePoint(byte[] b, int s)
2. utf8ToCodePoint(int b1, int b2, int b3, int b4)
3. utf8Togb2312(String str)
4. utf8ToString(byte[] src, int stPos, int utf8Len)
5. utf8ToUnicode(String inStr)