wmii

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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 }