ref: e48a5c343d3ba76c6dfb949b5178e46a41792f72
dir: /sys/src/libc/fmt/dorfmt.c/
#include <u.h> #include <libc.h> #include "fmtdef.h" /* format the output into f->to and return the number of characters fmted */ int dorfmt(Fmt *f, 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; } }