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Annotation of embedaddon/php/ext/json/utf8_to_utf16.c, revision 1.1

1.1     ! misho       1: /* utf8_to_utf16.c */
        !             2: 
        !             3: /* 2005-12-25 */
        !             4: 
        !             5: /*
        !             6: Copyright (c) 2005 JSON.org
        !             7: 
        !             8: Permission is hereby granted, free of charge, to any person obtaining a copy
        !             9: of this software and associated documentation files (the "Software"), to deal
        !            10: in the Software without restriction, including without limitation the rights
        !            11: to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
        !            12: copies of the Software, and to permit persons to whom the Software is
        !            13: furnished to do so, subject to the following conditions:
        !            14: 
        !            15: The above copyright notice and this permission notice shall be included in all
        !            16: copies or substantial portions of the Software.
        !            17: 
        !            18: The Software shall be used for Good, not Evil.
        !            19: 
        !            20: THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
        !            21: IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
        !            22: FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
        !            23: AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
        !            24: LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
        !            25: OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
        !            26: SOFTWARE.
        !            27: */
        !            28: 
        !            29: #include "utf8_to_utf16.h"
        !            30: #include "utf8_decode.h"
        !            31: 
        !            32: int 
        !            33: utf8_to_utf16(unsigned short w[], char p[], int length) 
        !            34: {
        !            35:     int c;
        !            36:     int the_index = 0;
        !            37:     json_utf8_decode utf8;
        !            38:     
        !            39:     utf8_decode_init(&utf8, p, length);
        !            40:     for (;;) {
        !            41:         c = utf8_decode_next(&utf8);
        !            42:         if (c < 0) {
        !            43:             return (c == UTF8_END) ? the_index : UTF8_ERROR;
        !            44:         }
        !            45:         if (c < 0x10000) {
        !            46:             w[the_index] = (unsigned short)c;
        !            47:             the_index += 1;
        !            48:         } else {
        !            49:             c -= 0x10000;
        !            50:             w[the_index] = (unsigned short)(0xD800 | (c >> 10));
        !            51:             the_index += 1;
        !            52:             w[the_index] = (unsigned short)(0xDC00 | (c & 0x3FF));
        !            53:             the_index += 1;
        !            54:         }
        !            55:     }
        !            56: }