1  /* Parse wprintf format string.
       2     Copyright (C) 1999-2023 Free Software Foundation, Inc.
       3  
       4     This file is free software: you can redistribute it and/or modify
       5     it under the terms of the GNU Lesser General Public License as
       6     published by the Free Software Foundation; either version 2.1 of the
       7     License, or (at your option) any later version.
       8  
       9     This file 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 Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public License
      15     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
      16  
      17  /* This file can be parametrized with the following macros:
      18       STATIC             Set to 'static' to declare the function static.  */
      19  #ifndef _WPRINTF_PARSE_H
      20  #define _WPRINTF_PARSE_H
      21  
      22  #if HAVE_FEATURES_H
      23  # include <features.h> /* for __GLIBC__, __UCLIBC__ */
      24  #endif
      25  
      26  #include "printf-args.h"
      27  
      28  
      29  /* Flags */
      30  #define FLAG_GROUP       1      /* ' flag */
      31  #define FLAG_LEFT        2      /* - flag */
      32  #define FLAG_SHOWSIGN    4      /* + flag */
      33  #define FLAG_SPACE       8      /* space flag */
      34  #define FLAG_ALT        16      /* # flag */
      35  #define FLAG_ZERO       32
      36  #if __GLIBC__ >= 2 && !defined __UCLIBC__
      37  # define FLAG_LOCALIZED 64      /* I flag, uses localized digits */
      38  #endif
      39  
      40  /* arg_index value indicating that no argument is consumed.  */
      41  #define ARG_NONE        (~(size_t)0)
      42  
      43  /* Number of directly allocated directives (no malloc() needed).  */
      44  #define N_DIRECT_ALLOC_DIRECTIVES 7
      45  
      46  /* A parsed directive.  */
      47  typedef struct
      48  {
      49    const wchar_t* dir_start;
      50    const wchar_t* dir_end;
      51    int flags;
      52    const wchar_t* width_start;
      53    const wchar_t* width_end;
      54    size_t width_arg_index;
      55    const wchar_t* precision_start;
      56    const wchar_t* precision_end;
      57    size_t precision_arg_index;
      58    wchar_t conversion; /* d i b B o u x X f F e E g G a A c s p n U % but not C S */
      59    size_t arg_index;
      60  }
      61  wchar_t_directive;
      62  
      63  /* A parsed format string.  */
      64  typedef struct
      65  {
      66    size_t count;
      67    wchar_t_directive *dir;
      68    size_t max_width_length;
      69    size_t max_precision_length;
      70    wchar_t_directive direct_alloc_dir[N_DIRECT_ALLOC_DIRECTIVES];
      71  }
      72  wchar_t_directives;
      73  
      74  
      75  /* Parses the format string.  Fills in the number N of directives, and fills
      76     in directives[0], ..., directives[N-1], and sets directives[N].dir_start
      77     to the end of the format string.  Also fills in the arg_type fields of the
      78     arguments and the needed count of arguments.  */
      79  #ifdef STATIC
      80  STATIC
      81  #else
      82  extern
      83  #endif
      84  int wprintf_parse (const wchar_t *format, wchar_t_directives *d, arguments *a);
      85  
      86  #endif /* _WPRINTF_PARSE_H */