stdio/FreeBSD/xprintf_vis.c

   1 /*-
   2  * Copyright (c) 2005 Poul-Henning Kamp
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  * $FreeBSD: src/lib/libc/stdio/xprintf_vis.c,v 1.2 2006/01/25 12:45:24 phk Exp $
  27  */
  28
  29 #include <namespace.h>
  30 #include <stdio.h>
  31 #include <string.h>
  32 #include <stdlib.h>
  33 #include <wchar.h>
  34 #include <vis.h>
  35 #include <assert.h>
  36 #include <sys/time.h>
  37 #include "printf.h"
  38 #include "xprintf_private.h"
  39
  40 __private_extern__ int
  41 __printf_arginfo_vis(const struct printf_info *pi, size_t n, int *argt)
  42 {
  43
  44         assert(n >= 1);
  45         argt[0] = PA_POINTER;
  46         return (1);
  47 }
  48
  49 __private_extern__ int
  50 __printf_render_vis(struct __printf_io *io, const struct printf_info *pi, const void *const *arg)
  51 {
  52         char *p, *buf;
  53         unsigned l;
  54         int ret;
  55
  56         ret = 0;
  57         p = *((char **)arg[0]);
  58         if (p == NULL)
  59                 return (__printf_out(io, pi, "(null)", 6));
  60         if (pi->prec >= 0)
  61                 l = pi->prec;
  62         else
  63                 l = strlen(p);
  64         buf = MALLOC(l * 4 + 1);
  65         if (buf == NULL)
  66                 return (-1);
  67         if (pi->showsign)
  68                 ret = strvisx(buf, p, l, VIS_WHITE | VIS_HTTPSTYLE);
  69         else if (pi->pad == '0')
  70                 ret = strvisx(buf, p, l, VIS_WHITE | VIS_OCTAL);
  71         else if (pi->alt)
  72                 ret = strvisx(buf, p, l, VIS_WHITE);
  73         else
  74                 ret = strvisx(buf, p, l, VIS_WHITE | VIS_CSTYLE | VIS_OCTAL);
  75         ret += __printf_out(io, pi, buf, ret);
  76         __printf_flush(io);
  77         free(buf);
  78         return(ret);
  79 }