github.com/akaros/go-akaros@v0.0.0-20181004170632-85005d477eab/src/lib9/fmt/fmtfd.c (about)

     1  /*
     2   * The authors of this software are Rob Pike and Ken Thompson,
     3   * with contributions from Mike Burrows and Sean Dorward.
     4   *
     5   *     Copyright (c) 2002-2006 by Lucent Technologies.
     6   *     Portions Copyright (c) 2004 Google Inc.
     7   * 
     8   * Permission to use, copy, modify, and distribute this software for any
     9   * purpose without fee is hereby granted, provided that this entire notice
    10   * is included in all copies of any software which is or includes a copy
    11   * or modification of this software and in all copies of the supporting
    12   * documentation for such software.
    13   * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
    14   * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES 
    15   * NOR GOOGLE INC MAKE ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING 
    16   * THE MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
    17   */
    18  
    19  #include <u.h>
    20  #include <libc.h>
    21  #include "fmtdef.h"
    22  
    23  /*
    24   * public routine for final flush of a formatting buffer
    25   * to a file descriptor; returns total char count.
    26   */
    27  int
    28  fmtfdflush(Fmt *f)
    29  {
    30  	if(__fmtFdFlush(f) <= 0)
    31  		return -1;
    32  	return f->nfmt;
    33  }
    34  
    35  /*
    36   * initialize an output buffer for buffered printing
    37   */
    38  int
    39  fmtfdinit(Fmt *f, int fd, char *buf, int size)
    40  {
    41  	f->runes = 0;
    42  	f->start = buf;
    43  	f->to = buf;
    44  	f->stop = buf + size;
    45  	f->flush = __fmtFdFlush;
    46  	f->farg = (void*)(uintptr)fd;
    47  	f->flags = 0;
    48  	f->nfmt = 0;
    49  	fmtlocaleinit(f, nil, nil, nil);
    50  	return 0;
    51  }