minimal plan9port to cross-build Jehanne
This commit is contained in:
45
lib/lib9/utf/utfrrune.c
Normal file
45
lib/lib9/utf/utfrrune.c
Normal file
@ -0,0 +1,45 @@
|
||||
/*
|
||||
* 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*
|
||||
utfrrune(char *s, long c)
|
||||
{
|
||||
long c1;
|
||||
Rune r;
|
||||
char *s1;
|
||||
|
||||
if(c < Runesync) /* not part of utf sequence */
|
||||
return strrchr(s, c);
|
||||
|
||||
s1 = 0;
|
||||
for(;;) {
|
||||
c1 = *(uchar*)s;
|
||||
if(c1 < Runeself) { /* one byte rune */
|
||||
if(c1 == 0)
|
||||
return s1;
|
||||
if(c1 == c)
|
||||
s1 = s;
|
||||
s++;
|
||||
continue;
|
||||
}
|
||||
c1 = chartorune(&r, s);
|
||||
if(r == c)
|
||||
s1 = s;
|
||||
s += c1;
|
||||
}
|
||||
}
|
Reference in New Issue
Block a user