ref: aa0b6bedf4151dffec81e38b3c166aaac51c04c1
dir: /sys/src/ape/lib/fmt/dorfmt.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 "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 */ }