ref: 1018d7a7091fd5e0433f501a3474cdc3fec322cc
dir: /lib9/vfprint.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 "lib9.h" #include "fmtdef.h" /* * generic routine for flushing a formatting buffer * to a file descriptor */ int _fmtFdFlush(Fmt *f) { int n; n = (char*)f->to - (char*)f->start; if(n && write((int)f->farg, f->start, n) != n) return 0; f->to = f->start; return 1; } int vfprint(int fd, char *fmt, va_list args) { Fmt f; char buf[256]; int n; fmtfdinit(&f, fd, buf, sizeof(buf)); va_copy(f.args, args); n = dofmt(&f, fmt); va_end(f.args); if(n > 0 && _fmtFdFlush(&f) == 0) return -1; return n; }