/* Parse printf format string.
   Copyright (C) 1999, 2002-2003, 2005, 2007, 2010-2018 Free Software
   Foundation, Inc.

   This program is free software: you can redistribute it and/or
   modify it under the terms of either:

     * the GNU Lesser General Public License as published by the Free
       Software Foundation; either version 3 of the License, or (at your
       option) any later version.

   or

     * the GNU General Public License as published by the Free
       Software Foundation; either version 2 of the License, or (at your
       option) any later version.

   or both in parallel, as here.
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License along
   with this program; if not, see <https://www.gnu.org/licenses/>.  */

#ifndef _PRINTF_PARSE_H
#define _PRINTF_PARSE_H

/* This file can be parametrized with the following macros:
     ENABLE_UNISTDIO    Set to 1 to enable the unistdio extensions.
     STATIC             Set to 'static' to declare the function static.  */

#if HAVE_FEATURES_H
# include <features.h> /* for __GLIBC__, __UCLIBC__ */
#endif

#include "printf-args.h"


/* Flags */
#define FLAG_GROUP       1      /* ' flag */
#define FLAG_LEFT        2      /* - flag */
#define FLAG_SHOWSIGN    4      /* + flag */
#define FLAG_SPACE       8      /* space flag */
#define FLAG_ALT        16      /* # flag */
#define FLAG_ZERO       32
#if __GLIBC__ >= 2 && !defined __UCLIBC__
# define FLAG_LOCALIZED 64      /* I flag, uses localized digits */
#endif

/* arg_index value indicating that no argument is consumed.  */
#define ARG_NONE        (~(size_t)0)

/* xxx_directive: A parsed directive.
   xxx_directives: A parsed format string.  */

/* Number of directly allocated directives (no malloc() needed).  */
#define N_DIRECT_ALLOC_DIRECTIVES 7

/* A parsed directive.  */
typedef struct
{
  const char* dir_start;
  const char* dir_end;
  int flags;
  const char* width_start;
  const char* width_end;
  size_t width_arg_index;
  const char* precision_start;
  const char* precision_end;
  size_t precision_arg_index;
  char conversion; /* d i o u x X f F e E g G a A c s p n U % but not C S */
  size_t arg_index;
}
char_directive;

/* A parsed format string.  */
typedef struct
{
  size_t count;
  char_directive *dir;
  size_t max_width_length;
  size_t max_precision_length;
  char_directive direct_alloc_dir[N_DIRECT_ALLOC_DIRECTIVES];
}
char_directives;

#if ENABLE_UNISTDIO

/* A parsed directive.  */
typedef struct
{
  const uint8_t* dir_start;
  const uint8_t* dir_end;
  int flags;
  const uint8_t* width_start;
  const uint8_t* width_end;
  size_t width_arg_index;
  const uint8_t* precision_start;
  const uint8_t* precision_end;
  size_t precision_arg_index;
  uint8_t conversion; /* d i o u x X f F e E g G a A c s p n U % but not C S */
  size_t arg_index;
}
u8_directive;

/* A parsed format string.  */
typedef struct
{
  size_t count;
  u8_directive *dir;
  size_t max_width_length;
  size_t max_precision_length;
  u8_directive direct_alloc_dir[N_DIRECT_ALLOC_DIRECTIVES];
}
u8_directives;

/* A parsed directive.  */
typedef struct
{
  const uint16_t* dir_start;
  const uint16_t* dir_end;
  int flags;
  const uint16_t* width_start;
  const uint16_t* width_end;
  size_t width_arg_index;
  const uint16_t* precision_start;
  const uint16_t* precision_end;
  size_t precision_arg_index;
  uint16_t conversion; /* d i o u x X f F e E g G a A c s p n U % but not C S */
  size_t arg_index;
}
u16_directive;

/* A parsed format string.  */
typedef struct
{
  size_t count;
  u16_directive *dir;
  size_t max_width_length;
  size_t max_precision_length;
  u16_directive direct_alloc_dir[N_DIRECT_ALLOC_DIRECTIVES];
}
u16_directives;

/* A parsed directive.  */
typedef struct
{
  const uint32_t* dir_start;
  const uint32_t* dir_end;
  int flags;
  const uint32_t* width_start;
  const uint32_t* width_end;
  size_t width_arg_index;
  const uint32_t* precision_start;
  const uint32_t* precision_end;
  size_t precision_arg_index;
  uint32_t conversion; /* d i o u x X f F e E g G a A c s p n U % but not C S */
  size_t arg_index;
}
u32_directive;

/* A parsed format string.  */
typedef struct
{
  size_t count;
  u32_directive *dir;
  size_t max_width_length;
  size_t max_precision_length;
  u32_directive direct_alloc_dir[N_DIRECT_ALLOC_DIRECTIVES];
}
u32_directives;

#endif


/* Parses the format string.  Fills in the number N of directives, and fills
   in directives[0], ..., directives[N-1], and sets directives[N].dir_start
   to the end of the format string.  Also fills in the arg_type fields of the
   arguments and the needed count of arguments.  */
#if ENABLE_UNISTDIO
extern int
       ulc_printf_parse (const char *format, char_directives *d, arguments *a);
extern int
       u8_printf_parse (const uint8_t *format, u8_directives *d, arguments *a);
extern int
       u16_printf_parse (const uint16_t *format, u16_directives *d,
                         arguments *a);
extern int
       u32_printf_parse (const uint32_t *format, u32_directives *d,
                         arguments *a);
#else
# ifdef STATIC
STATIC
# else
extern
# endif
int printf_parse (const char *format, char_directives *d, arguments *a);
#endif

#endif /* _PRINTF_PARSE_H */