1 /*
2 * Copyright (c) 2016 Joshua Rubin <joshua@rubixconsulting.com>
3 *
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
13 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
14 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 #include <sys/types.h>
18
19 #include <utf8proc.h>
20
21 #include "compat.h"
22
23 int
utf8proc_wcwidth(wchar_t wc)24 utf8proc_wcwidth(wchar_t wc)
25 {
26 int cat;
27
28 cat = utf8proc_category(wc);
29 if (cat == UTF8PROC_CATEGORY_CO) {
30 /*
31 * The private use category is where powerline and similar
32 * codepoints are stored, they have "ambiguous" width - use 1.
33 */
34 return (1);
35 }
36 return (utf8proc_charwidth(wc));
37 }
38
39 int
utf8proc_mbtowc(wchar_t * pwc,const char * s,size_t n)40 utf8proc_mbtowc(wchar_t *pwc, const char *s, size_t n)
41 {
42 utf8proc_ssize_t slen;
43
44 if (s == NULL)
45 return (0);
46
47 /*
48 * *pwc == -1 indicates invalid codepoint
49 * slen < 0 indicates an error
50 */
51 slen = utf8proc_iterate(s, n, pwc);
52 if (*pwc == (wchar_t)-1 || slen < 0)
53 return (-1);
54 return (slen);
55 }
56
57 int
utf8proc_wctomb(char * s,wchar_t wc)58 utf8proc_wctomb(char *s, wchar_t wc)
59 {
60 if (s == NULL)
61 return (0);
62
63 if (!utf8proc_codepoint_valid(wc))
64 return (-1);
65 return (utf8proc_encode_char(wc, s));
66 }
67