Subversion Repositories planix.SVN

/*
 * 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 "utf.h"
#include "fmt.h"
#include "fmtdef.h"

/* format the output into f->to and return the number of characters fmted  */

int
dorfmt(Fmt *f, const Rune *fmt)
{
        Rune *rt, *rs;
        int r;
        char *t, *s;
        int nfmt;

        nfmt = f->nfmt;
        for(;;){
                if(f->runes){
                        rt = f->to;
                        rs = f->stop;
                        while((r = *fmt++) && r != '%'){
                                FMTRCHAR(f, rt, rs, r);
                        }
                        f->nfmt += rt - (Rune *)f->to;
                        f->to = rt;
                        if(!r)
                                return f->nfmt - nfmt;
                        f->stop = rs;
                }else{
                        t = f->to;
                        s = f->stop;
                        while((r = *fmt++) && r != '%'){
                                FMTRUNE(f, t, f->stop, r);
                        }
                        f->nfmt += t - (char *)f->to;
                        f->to = t;
                        if(!r)
                                return f->nfmt - nfmt;
                        f->stop = s;
                }

                fmt = __fmtdispatch(f, fmt, 1);
                if(fmt == nil)
                        return -1;
        }
        return 0;               /* not reached */
}