mirror of https://github.com/0intro/wmii
45 lines
1.2 KiB
C
45 lines
1.2 KiB
C
/*
|
|
* The authors of this software are Rob Pike and Ken Thompson.
|
|
* Copyright (c) 2002 by Lucent Technologies.
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose without fee is hereby granted, provided that this entire notice
|
|
* is included in all copies of any software which is or includes a copy
|
|
* or modification of this software and in all copies of the supporting
|
|
* documentation for such software.
|
|
* THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
|
|
* WARRANTY. IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
|
|
* ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
|
|
* OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
|
|
*/
|
|
#include <stdarg.h>
|
|
#include <string.h>
|
|
#include "plan9.h"
|
|
#include "utf.h"
|
|
|
|
char*
|
|
utfrune(const char *s, long c)
|
|
{
|
|
long c1;
|
|
Rune r;
|
|
int n;
|
|
|
|
if(c < Runesync) /* not part of utf sequence */
|
|
return strchr(s, c);
|
|
|
|
for(;;) {
|
|
c1 = *(uchar*)s;
|
|
if(c1 < Runeself) { /* one byte rune */
|
|
if(c1 == 0)
|
|
return 0;
|
|
if(c1 == c)
|
|
return (char*)s;
|
|
s++;
|
|
continue;
|
|
}
|
|
n = chartorune(&r, s);
|
|
if(r == c)
|
|
return (char*)s;
|
|
s += n;
|
|
}
|
|
}
|