xref: /plan9/sys/src/ape/lib/fmt/fmtrune.c (revision 40ef9009116dd37656783aaadc8782c1d8bfb056)
1*40ef9009SDavid du Colombier /*
2*40ef9009SDavid du Colombier  * The authors of this software are Rob Pike and Ken Thompson.
3*40ef9009SDavid du Colombier  *              Copyright (c) 2002 by Lucent Technologies.
4*40ef9009SDavid du Colombier  * Permission to use, copy, modify, and distribute this software for any
5*40ef9009SDavid du Colombier  * purpose without fee is hereby granted, provided that this entire notice
6*40ef9009SDavid du Colombier  * is included in all copies of any software which is or includes a copy
7*40ef9009SDavid du Colombier  * or modification of this software and in all copies of the supporting
8*40ef9009SDavid du Colombier  * documentation for such software.
9*40ef9009SDavid du Colombier  * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
10*40ef9009SDavid du Colombier  * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE ANY
11*40ef9009SDavid du Colombier  * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
12*40ef9009SDavid du Colombier  * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
13*40ef9009SDavid du Colombier  */
14*40ef9009SDavid du Colombier #include <stdarg.h>
15*40ef9009SDavid du Colombier #include <string.h>
16*40ef9009SDavid du Colombier #include "utf.h"
17*40ef9009SDavid du Colombier #include "fmt.h"
18*40ef9009SDavid du Colombier #include "fmtdef.h"
19*40ef9009SDavid du Colombier 
20*40ef9009SDavid du Colombier int
fmtrune(Fmt * f,int r)21*40ef9009SDavid du Colombier fmtrune(Fmt *f, int r)
22*40ef9009SDavid du Colombier {
23*40ef9009SDavid du Colombier 	Rune *rt;
24*40ef9009SDavid du Colombier 	char *t;
25*40ef9009SDavid du Colombier 	int n;
26*40ef9009SDavid du Colombier 
27*40ef9009SDavid du Colombier 	if(f->runes){
28*40ef9009SDavid du Colombier 		rt = (Rune*)f->to;
29*40ef9009SDavid du Colombier 		FMTRCHAR(f, rt, f->stop, r);
30*40ef9009SDavid du Colombier 		f->to = rt;
31*40ef9009SDavid du Colombier 		n = 1;
32*40ef9009SDavid du Colombier 	}else{
33*40ef9009SDavid du Colombier 		t = (char*)f->to;
34*40ef9009SDavid du Colombier 		FMTRUNE(f, t, f->stop, r);
35*40ef9009SDavid du Colombier 		n = t - (char*)f->to;
36*40ef9009SDavid du Colombier 		f->to = t;
37*40ef9009SDavid du Colombier 	}
38*40ef9009SDavid du Colombier 	f->nfmt += n;
39*40ef9009SDavid du Colombier 	return 0;
40*40ef9009SDavid du Colombier }
41