fmtfdflush.c (1102B)
1 /* 2 * The authors of this software are Rob Pike and Ken Thompson. 3 * Copyright (c) 2002 by Lucent Technologies. 4 * Permission to use, copy, modify, and distribute this software for any 5 * purpose without fee is hereby granted, provided that this entire notice 6 * is included in all copies of any software which is or includes a copy 7 * or modification of this software and in all copies of the supporting 8 * documentation for such software. 9 * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED 10 * WARRANTY. IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE 11 * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY 12 * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE. 13 */ 14 #include <stdarg.h> 15 #include <unistd.h> 16 #include "plan9.h" 17 #include "fmt.h" 18 #include "fmtdef.h" 19 20 /* 21 * generic routine for flushing a formatting buffer 22 * to a file descriptor 23 */ 24 int 25 __fmtFdFlush(Fmt *f) 26 { 27 int n; 28 29 n = (char*)f->to - (char*)f->start; 30 if(n && write((uintptr_t)f->farg, f->start, n) != n) 31 return 0; 32 f->to = f->start; 33 return 1; 34 }