Return to utf8proc.c CVS log

Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / tmux / compat

Annotation of embedaddon/tmux/compat/utf8proc.c, revision 1.1.1.1

1.1       misho       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
                     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
                     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
                     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: }