include/printf.h

   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  * $FreeBSD$
  27  */
  28
  29 #ifndef _PRINTF_H_
  30 #define _PRINTF_H_
  31
  32 #include <wchar.h>
  33
  34 /*
  35  * The API defined by glibc allows a renderer to take multiple arguments
  36  * This is obviously usable for things like (ptr+len) pairs etc.
  37  * But the do not actually provide support for it at the end of the day,
  38  * they offer only one argument to the arginfo function, but do accept
  39  * >1 returns, although the do not check the types of those arguments
  40  * argument
  41  * Be compatible for now.
  42  */
  43 #define __PRINTFMAXARG          2
  44
  45 struct printf_info {
  46         /* GLIBC compatible */
  47         int             prec;
  48         int             width;
  49         wchar_t         spec;
  50         unsigned        is_long_double;
  51         unsigned        is_char;
  52         unsigned        is_short;
  53         unsigned        is_long;
  54         unsigned        alt;
  55         unsigned        space;
  56         unsigned        left;
  57         unsigned        showsign;
  58         unsigned        group;
  59         unsigned        extra;
  60         unsigned        wide;
  61         wchar_t         pad;
  62
  63         /* FreeBSD extensions */
  64
  65         unsigned        is_quad;
  66         unsigned        is_intmax;
  67         unsigned        is_ptrdiff;
  68         unsigned        is_size;
  69
  70         /* private */
  71         int             sofar;
  72         unsigned        get_width;
  73         unsigned        get_prec;
  74         const char      *begin;
  75         const char      *end;
  76         void            *arg[__PRINTFMAXARG];
  77 };
  78
  79 enum {
  80         PA_INT          = (1 << 0),     /* int */
  81         PA_CHAR         = (1 << 1),     /* int, cast to char */
  82         PA_WCHAR        = (1 << 2),     /* wide char */
  83         PA_STRING       = (1 << 3),     /* const char * (with '\0') */
  84         PA_WSTRING      = (1 << 4),     /* const wchar_t * */
  85         PA_POINTER      = (1 << 5),     /* void * */
  86         PA_FLOAT        = (1 << 6),     /* float */
  87         PA_DOUBLE       = (1 << 7)      /* double */
  88 };
  89
  90 #define PA_FLAG_MASK            0xff0000
  91 #define PA_FLAG_LONG_LONG       (1 << 16)
  92 #define PA_FLAG_LONG            (1 << 17)
  93 #define PA_FLAG_SHORT           (1 << 18)
  94 #define PA_FLAG_PTR             (1 << 19)
  95 #define PA_FLAG_QUAD            (1 << 20)
  96 #define PA_FLAG_INTMAX          (1 << 21)
  97 #define PA_FLAG_SIZE            (1 << 22)
  98 #define PA_FLAG_PTRDIFF         (1 << 23)
  99 #define PA_FLAG_LONG_DOUBLE     PA_FLAG_LONG_LONG
 100
 101 typedef int printf_arginfo_function(const struct printf_info *, size_t, int *);
 102 typedef int printf_function(FILE *, const struct printf_info *, const void *const *);
 103
 104 /* FreeBSD extension */
 105 struct __printf_io;
 106 typedef int printf_render(struct __printf_io *, const struct printf_info *, const void *const *);
 107
 108 /* vprintf.c */
 109 extern const char __lowercase_hex[17];
 110 extern const char __uppercase_hex[17];
 111
 112 void __printf_flush(struct __printf_io *io);
 113 int __printf_puts(struct __printf_io *io, const void *ptr, int len);
 114 int __printf_pad(struct __printf_io *io, int n, int zero);
 115 int __printf_out(struct __printf_io *io, const struct printf_info *pi, const void *ptr, int len);
 116
 117 int __xvprintf(FILE *fp, const char *fmt0, va_list ap);
 118 extern int __use_xprintf;
 119
 120 /* GLIBC compat */
 121 int register_printf_function(int spec, printf_function *render, printf_arginfo_function *arginfo);
 122
 123 /* FreeBSD */
 124 int register_printf_render(int spec, printf_render *render, printf_arginfo_function *arginfo);
 125 int register_printf_render_std(const unsigned char *specs);
 126
 127 /* vprintf_errno.c */
 128 printf_arginfo_function         __printf_arginfo_errno;
 129 printf_render                   __printf_render_errno;
 130
 131 /* vprintf_float.c */
 132 printf_arginfo_function         __printf_arginfo_float;
 133 printf_render                   __printf_render_float;
 134
 135 /* vprintf_hexdump.c */
 136 printf_arginfo_function         __printf_arginfo_hexdump;
 137 printf_render                   __printf_render_hexdump;
 138
 139 /* vprintf_int.c */
 140 printf_arginfo_function         __printf_arginfo_ptr;
 141 printf_arginfo_function         __printf_arginfo_int;
 142 printf_render                   __printf_render_ptr;
 143 printf_render                   __printf_render_int;
 144
 145 /* vprintf_quoute.c */
 146 printf_arginfo_function         __printf_arginfo_quote;
 147 printf_render                   __printf_render_quote;
 148
 149 /* vprintf_str.c */
 150 printf_arginfo_function         __printf_arginfo_chr;
 151 printf_render                   __printf_render_chr;
 152 printf_arginfo_function         __printf_arginfo_str;
 153 printf_render                   __printf_render_str;
 154
 155 /* vprintf_time.c */
 156 printf_arginfo_function         __printf_arginfo_time;
 157 printf_render                   __printf_render_time;
 158
 159 /* vprintf_vis.c */
 160 printf_arginfo_function         __printf_arginfo_vis;
 161 printf_render                   __printf_render_vis;
 162
 163 #endif /* !_PRINTF_H */