lib/printf-parse.h

   1 /* Parse printf format string.
   2    Copyright (C) 1999, 2002-2003 Free Software Foundation, Inc.
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 2, or (at your option)
   7    any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License along
  15    with this program; if not, write to the Free Software Foundation,
  16    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
  17
  18 #ifndef _PRINTF_PARSE_H
  19 #define _PRINTF_PARSE_H
  20
  21 #include "printf-args.h"
  22
  23
  24 /* Flags */
  25 #define FLAG_GROUP       1      /* ' flag */
  26 #define FLAG_LEFT        2      /* - flag */
  27 #define FLAG_SHOWSIGN    4      /* + flag */
  28 #define FLAG_SPACE       8      /* space flag */
  29 #define FLAG_ALT        16      /* # flag */
  30 #define FLAG_ZERO       32
  31
  32 /* arg_index value indicating that no argument is consumed.  */
  33 #define ARG_NONE        (~(size_t)0)
  34
  35 /* A parsed directive.  */
  36 typedef struct
  37 {
  38   const char* dir_start;
  39   const char* dir_end;
  40   int flags;
  41   const char* width_start;
  42   const char* width_end;
  43   size_t width_arg_index;
  44   const char* precision_start;
  45   const char* precision_end;
  46   size_t precision_arg_index;
  47   char conversion; /* d i o u x X f e E g G c s p n U % but not C S */
  48   size_t arg_index;
  49 }
  50 char_directive;
  51
  52 /* A parsed format string.  */
  53 typedef struct
  54 {
  55   size_t count;
  56   char_directive *dir;
  57   size_t max_width_length;
  58   size_t max_precision_length;
  59 }
  60 char_directives;
  61
  62
  63 /* Parses the format string.  Fills in the number N of directives, and fills
  64    in directives[0], ..., directives[N-1], and sets directives[N].dir_start
  65    to the end of the format string.  Also fills in the arg_type fields of the
  66    arguments and the needed count of arguments.  */
  67 #ifdef STATIC
  68 STATIC
  69 #else
  70 extern
  71 #endif
  72 int printf_parse (const char *format, char_directives *d, arguments *a);
  73
  74 #endif /* _PRINTF_PARSE_H */