58 lines
1.7 KiB
C
58 lines
1.7 KiB
C
/* $OpenBSD: utf8.c,v 1.2 2016/01/18 19:06:37 schwarze Exp $ */
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/*
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* Copyright (c) 2015, 2016 Ingo Schwarze <schwarze@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef SMALL
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#include <stdio.h>
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#include <stdlib.h>
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#include <wchar.h>
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extern int f_nonprint;
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int
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mbsprint(const char *mbs, int print)
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{
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wchar_t wc;
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int len; /* length in bytes of UTF-8 encoded string */
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int width; /* display width of a single Unicode char */
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int total_width; /* display width of the whole string */
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for (total_width = 0; *mbs != '\0'; mbs += len) {
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if ((len = mbtowc(&wc, mbs, MB_CUR_MAX)) == -1) {
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(void)mbtowc(NULL, NULL, MB_CUR_MAX);
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if (print)
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putchar(f_nonprint ? '?' : *mbs);
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total_width++;
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len = 1;
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} else if ((width = wcwidth(wc)) == -1) {
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if (print) {
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if (f_nonprint)
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putchar('?');
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else
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fwrite(mbs, 1, len, stdout);
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}
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total_width++;
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} else {
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if (print)
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fwrite(mbs, 1, len, stdout);
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total_width += width;
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}
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}
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return total_width;
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}
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#endif
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