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57 lines
1.8 KiB
C
57 lines
1.8 KiB
C
/* utf8_to_utf16.c */
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/* 2005-12-25 */
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/*
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Copyright (c) 2005 JSON.org
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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The Software shall be used for Good, not Evil.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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#include "utf8_to_utf16.h"
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#include "utf8_decode.h"
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int
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utf8_to_utf16(unsigned short w[], char p[], int length)
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{
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int c;
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int the_index = 0;
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json_utf8_decode utf8;
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utf8_decode_init(&utf8, p, length);
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for (;;) {
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c = utf8_decode_next(&utf8);
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if (c < 0) {
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return (c == UTF8_END) ? the_index : UTF8_ERROR;
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}
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if (c < 0x10000) {
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w[the_index] = (unsigned short)c;
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the_index += 1;
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} else {
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c -= 0x10000;
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w[the_index] = (unsigned short)(0xD800 | (c >> 10));
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the_index += 1;
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w[the_index] = (unsigned short)(0xDC00 | (c & 0x3FF));
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the_index += 1;
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}
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}
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}
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