ref: a2c0e55e6885fde0d135831a77d227bc933d89e7
dir: /sys/src/ape/lib/fmt/fmtstr.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 <stdlib.h> #include "utf.h" #include "fmt.h" #include "fmtdef.h" static int fmtStrFlush(Fmt *f) { char *s; int n; n = (int)f->farg; n += 256; f->farg = (void*)n; s = (char*)f->start; f->start = realloc(s, n); if(f->start == nil){ f->start = s; return 0; } f->to = (char*)f->start + ((char*)f->to - s); f->stop = (char*)f->start + n - 1; return 1; } int fmtstrinit(Fmt *f) { int n; f->runes = 0; n = 32; f->start = malloc(n); if(f->start == nil) return -1; f->to = f->start; f->stop = (char*)f->start + n - 1; f->flush = fmtStrFlush; f->farg = (void*)n; f->nfmt = 0; return 0; } char* fmtstrflush(Fmt *f) { *(char*)f->to = '\0'; f->to = f->start; return (char*)f->start; }