mirror of
https://github.com/tmux/tmux.git
synced 2024-11-01 07:08:49 +00:00
73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
|
/* $OpenBSD$ */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
|
||
|
|
*
|
||
|
|
* Permission to use, copy, modify, and distribute this software for any
|
||
|
|
* purpose with or without fee is hereby granted, provided that the above
|
||
|
|
* copyright notice and this permission notice appear in all copies.
|
||
|
|
*
|
||
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
||
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
||
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
||
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
||
|
|
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
|
||
|
|
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
|
||
|
|
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <sys/types.h>
|
||
|
|
|
||
|
|
#include "tmux.h"
|
||
|
|
|
||
|
|
/* Return a section of a string around a point. */
|
||
|
|
char *
|
||
|
|
section_string(char *buf, size_t len, size_t sectoff, size_t sectlen)
|
||
|
|
{
|
||
|
|
char *s;
|
||
|
|
size_t first, last;
|
||
|
|
|
||
|
|
if (len <= sectlen) {
|
||
|
|
first = 0;
|
||
|
|
last = len;
|
||
|
|
} else if (sectoff < sectlen / 2) {
|
||
|
|
first = 0;
|
||
|
|
last = sectlen;
|
||
|
|
} else if (sectoff + sectlen / 2 > len) {
|
||
|
|
last = len;
|
||
|
|
first = last - sectlen;
|
||
|
|
} else {
|
||
|
|
first = sectoff - sectlen / 2;
|
||
|
|
last = first + sectlen;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (last - first > 3 && first != 0)
|
||
|
|
first += 3;
|
||
|
|
if (last - first > 3 && last != len)
|
||
|
|
last -= 3;
|
||
|
|
|
||
|
|
xasprintf(&s, "%s%.*s%s", first == 0 ? "" : "...",
|
||
|
|
(int) (last - first), buf + first, last == len ? "" : "...");
|
||
|
|
return (s);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Clean string of invisible characters. */
|
||
|
|
void
|
||
|
|
clean_string(const char *in, char *buf, size_t len)
|
||
|
|
{
|
||
|
|
const u_char *cp;
|
||
|
|
size_t off;
|
||
|
|
|
||
|
|
off = 0;
|
||
|
|
for (cp = in; *cp != '\0'; cp++) {
|
||
|
|
if (off >= len)
|
||
|
|
break;
|
||
|
|
if (*cp >= 0x20 && *cp <= 0x7f)
|
||
|
|
buf[off++] = *cp;
|
||
|
|
else
|
||
|
|
off += xsnprintf(buf + off, len - off, "\\%03hho", *cp);
|
||
|
|
}
|
||
|
|
if (off < len)
|
||
|
|
buf[off] = '\0';
|
||
|
|
}
|