Annotation of embedaddon/php/ext/json/utf8_to_utf16.c, revision 1.1.1.1
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: }
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