lib.utf.js_lib_js

程序员文章站 2022-06-01 18:28:40
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/* UTF-8  UTF-16 convertion library.
 *
/* Copyright (C) 1999 Masanao Izumo iz@onicos.co.jp>
 * 2007 Ma Bingyao andot@ujn.edu.cn>
 * Version: 2.1
 * LastModified: Feb 25, 2007
 * This library is free. You can redistribute it and/or modify it.
 */
/*
 * Interfaces:
 * utf8 = utf16to8(utf16);
 * utf16 = utf16to8(utf8);
 */
function utf16to8(str) {
if (str.match(/^[\x00-\x7f]*$/) != null) {
return str;
    }
var out, i, j, len, c, c2;
    out = [];
    len = str.length;
for (i = 0, j = 0; i         c = str.charCodeAt(i);
if (c             out[j] = str.charAt(i);
        }
else if (c             out[j] = String.fromCharCode(0xc0 | (c >>> 6),
                 0x80 | (c & 0x3f));
        }
else if (c ||