[bpt/guile.git] / lib / printf-parse.c

/* Formatted output to strings.
   Copyright (C) 1999-2000, 2002-2003, 2006-2010 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU Lesser General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

   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 Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public License along
   with this program; if not, write to the Free Software Foundation,
   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */

/* This file can be parametrized with the following macros:
     CHAR_T             The element type of the format string.
     CHAR_T_ONLY_ASCII  Set to 1 to enable verification that all characters
                        in the format string are ASCII.
     DIRECTIVE          Structure denoting a format directive.
                        Depends on CHAR_T.
     DIRECTIVES         Structure denoting the set of format directives of a
                        format string.  Depends on CHAR_T.
     PRINTF_PARSE       Function that parses a format string.
                        Depends on CHAR_T.
     STATIC             Set to 'static' to declare the function static.
     ENABLE_UNISTDIO    Set to 1 to enable the unistdio extensions.  */

#ifndef PRINTF_PARSE
# include <config.h>
#endif

/* Specification.  */
#ifndef PRINTF_PARSE
# include "printf-parse.h"
#endif

/* Default parameters.  */
#ifndef PRINTF_PARSE
# define PRINTF_PARSE printf_parse
# define CHAR_T char
# define DIRECTIVE char_directive
# define DIRECTIVES char_directives
#endif

/* Get size_t, NULL.  */
#include <stddef.h>

/* Get intmax_t.  */
#if defined IN_LIBINTL || defined IN_LIBASPRINTF
# if HAVE_STDINT_H_WITH_UINTMAX
#  include <stdint.h>
# endif
# if HAVE_INTTYPES_H_WITH_UINTMAX
#  include <inttypes.h>
# endif
#else
# include <stdint.h>
#endif

/* malloc(), realloc(), free().  */
#include <stdlib.h>

/* errno.  */
#include <errno.h>

/* Checked size_t computations.  */
#include "xsize.h"

#if CHAR_T_ONLY_ASCII
/* c_isascii().  */
# include "c-ctype.h"
#endif

#ifdef STATIC
STATIC
#endif
int
PRINTF_PARSE (const CHAR_T *format, DIRECTIVES *d, arguments *a)
{
  const CHAR_T *cp = format;            /* pointer into format */
  size_t arg_posn = 0;          /* number of regular arguments consumed */
  size_t d_allocated;                   /* allocated elements of d->dir */
  size_t a_allocated;                   /* allocated elements of a->arg */
  size_t max_width_length = 0;
  size_t max_precision_length = 0;

  d->count = 0;
  d_allocated = 1;
  d->dir = (DIRECTIVE *) malloc (d_allocated * sizeof (DIRECTIVE));
  if (d->dir == NULL)
    /* Out of memory.  */
    goto out_of_memory_1;

  a->count = 0;
  a_allocated = 0;
  a->arg = NULL;

#define REGISTER_ARG(_index_,_type_) \
  {                                                                     \
    size_t n = (_index_);                                               \
    if (n >= a_allocated)                                               \
      {                                                                 \
        size_t memory_size;                                             \
        argument *memory;                                               \
                                                                        \
        a_allocated = xtimes (a_allocated, 2);                          \
        if (a_allocated <= n)                                           \
          a_allocated = xsum (n, 1);                                    \
        memory_size = xtimes (a_allocated, sizeof (argument));          \
        if (size_overflow_p (memory_size))                              \
          /* Overflow, would lead to out of memory.  */                 \
          goto out_of_memory;                                           \
        memory = (argument *) (a->arg                                   \
                               ? realloc (a->arg, memory_size)          \
                               : malloc (memory_size));                 \
        if (memory == NULL)                                             \
          /* Out of memory.  */                                         \
          goto out_of_memory;                                           \
        a->arg = memory;                                                \
      }                                                                 \
    while (a->count <= n)                                               \
      a->arg[a->count++].type = TYPE_NONE;                              \
    if (a->arg[n].type == TYPE_NONE)                                    \
      a->arg[n].type = (_type_);                                        \
    else if (a->arg[n].type != (_type_))                                \
      /* Ambiguous type for positional argument.  */                    \
      goto error;                                                       \
  }

  while (*cp != '\0')
    {
      CHAR_T c = *cp++;
      if (c == '%')
        {
          size_t arg_index = ARG_NONE;
          DIRECTIVE *dp = &d->dir[d->count]; /* pointer to next directive */

          /* Initialize the next directive.  */
          dp->dir_start = cp - 1;
          dp->flags = 0;
          dp->width_start = NULL;
          dp->width_end = NULL;
          dp->width_arg_index = ARG_NONE;
          dp->precision_start = NULL;
          dp->precision_end = NULL;
          dp->precision_arg_index = ARG_NONE;
          dp->arg_index = ARG_NONE;

          /* Test for positional argument.  */
          if (*cp >= '0' && *cp <= '9')
            {
              const CHAR_T *np;

              for (np = cp; *np >= '0' && *np <= '9'; np++)
                ;
              if (*np == '$')
                {
                  size_t n = 0;

                  for (np = cp; *np >= '0' && *np <= '9'; np++)
                    n = xsum (xtimes (n, 10), *np - '0');
                  if (n == 0)
                    /* Positional argument 0.  */
                    goto error;
                  if (size_overflow_p (n))
                    /* n too large, would lead to out of memory later.  */
                    goto error;
                  arg_index = n - 1;
                  cp = np + 1;
                }
            }

          /* Read the flags.  */
          for (;;)
            {
              if (*cp == '\'')
                {
                  dp->flags |= FLAG_GROUP;
                  cp++;
                }
              else if (*cp == '-')
                {
                  dp->flags |= FLAG_LEFT;
                  cp++;
                }
              else if (*cp == '+')
                {
                  dp->flags |= FLAG_SHOWSIGN;
                  cp++;
                }
              else if (*cp == ' ')
                {
                  dp->flags |= FLAG_SPACE;
                  cp++;
                }
              else if (*cp == '#')
                {
                  dp->flags |= FLAG_ALT;
                  cp++;
                }
              else if (*cp == '0')
                {
                  dp->flags |= FLAG_ZERO;
                  cp++;
                }
#if __GLIBC__ >= 2 && !defined __UCLIBC__
              else if (*cp == 'I')
                {
                  dp->flags |= FLAG_LOCALIZED;
                  cp++;
                }
#endif
              else
                break;
            }

          /* Parse the field width.  */
          if (*cp == '*')
            {
              dp->width_start = cp;
              cp++;
              dp->width_end = cp;
              if (max_width_length < 1)
                max_width_length = 1;

              /* Test for positional argument.  */
              if (*cp >= '0' && *cp <= '9')
                {
                  const CHAR_T *np;

                  for (np = cp; *np >= '0' && *np <= '9'; np++)
                    ;
                  if (*np == '$')
                    {
                      size_t n = 0;

                      for (np = cp; *np >= '0' && *np <= '9'; np++)
                        n = xsum (xtimes (n, 10), *np - '0');
                      if (n == 0)
                        /* Positional argument 0.  */
                        goto error;
                      if (size_overflow_p (n))
                        /* n too large, would lead to out of memory later.  */
                        goto error;
                      dp->width_arg_index = n - 1;
                      cp = np + 1;
                    }
                }
              if (dp->width_arg_index == ARG_NONE)
                {
                  dp->width_arg_index = arg_posn++;
                  if (dp->width_arg_index == ARG_NONE)
                    /* arg_posn wrapped around.  */
                    goto error;
                }
              REGISTER_ARG (dp->width_arg_index, TYPE_INT);
            }
          else if (*cp >= '0' && *cp <= '9')
            {
              size_t width_length;

              dp->width_start = cp;
              for (; *cp >= '0' && *cp <= '9'; cp++)
                ;
              dp->width_end = cp;
              width_length = dp->width_end - dp->width_start;
              if (max_width_length < width_length)
                max_width_length = width_length;
            }

          /* Parse the precision.  */
          if (*cp == '.')
            {
              cp++;
              if (*cp == '*')
                {
                  dp->precision_start = cp - 1;
                  cp++;
                  dp->precision_end = cp;
                  if (max_precision_length < 2)
                    max_precision_length = 2;

                  /* Test for positional argument.  */
                  if (*cp >= '0' && *cp <= '9')
                    {
                      const CHAR_T *np;

                      for (np = cp; *np >= '0' && *np <= '9'; np++)
                        ;
                      if (*np == '$')
                        {
                          size_t n = 0;

                          for (np = cp; *np >= '0' && *np <= '9'; np++)
                            n = xsum (xtimes (n, 10), *np - '0');
                          if (n == 0)
                            /* Positional argument 0.  */
                            goto error;
                          if (size_overflow_p (n))
                            /* n too large, would lead to out of memory
                               later.  */
                            goto error;
                          dp->precision_arg_index = n - 1;
                          cp = np + 1;
                        }
                    }
                  if (dp->precision_arg_index == ARG_NONE)
                    {
                      dp->precision_arg_index = arg_posn++;
                      if (dp->precision_arg_index == ARG_NONE)
                        /* arg_posn wrapped around.  */
                        goto error;
                    }
                  REGISTER_ARG (dp->precision_arg_index, TYPE_INT);
                }
              else
                {
                  size_t precision_length;

                  dp->precision_start = cp - 1;
                  for (; *cp >= '0' && *cp <= '9'; cp++)
                    ;
                  dp->precision_end = cp;
                  precision_length = dp->precision_end - dp->precision_start;
                  if (max_precision_length < precision_length)
                    max_precision_length = precision_length;
                }
            }

          {
            arg_type type;

            /* Parse argument type/size specifiers.  */
            {
              int flags = 0;

              for (;;)
                {
                  if (*cp == 'h')
                    {
                      flags |= (1 << (flags & 1));
                      cp++;
                    }
                  else if (*cp == 'L')
                    {
                      flags |= 4;
                      cp++;
                    }
                  else if (*cp == 'l')
                    {
                      flags += 8;
                      cp++;
                    }
                  else if (*cp == 'j')
                    {
                      if (sizeof (intmax_t) > sizeof (long))
                        {
                          /* intmax_t = long long */
                          flags += 16;
                        }
                      else if (sizeof (intmax_t) > sizeof (int))
                        {
                          /* intmax_t = long */
                          flags += 8;
                        }
                      cp++;
                    }
                  else if (*cp == 'z' || *cp == 'Z')
                    {
                      /* 'z' is standardized in ISO C 99, but glibc uses 'Z'
                         because the warning facility in gcc-2.95.2 understands
                         only 'Z' (see gcc-2.95.2/gcc/c-common.c:1784).  */
                      if (sizeof (size_t) > sizeof (long))
                        {
                          /* size_t = long long */
                          flags += 16;
                        }
                      else if (sizeof (size_t) > sizeof (int))
                        {
                          /* size_t = long */
                          flags += 8;
                        }
                      cp++;
                    }
                  else if (*cp == 't')
                    {
                      if (sizeof (ptrdiff_t) > sizeof (long))
                        {
                          /* ptrdiff_t = long long */
                          flags += 16;
                        }
                      else if (sizeof (ptrdiff_t) > sizeof (int))
                        {
                          /* ptrdiff_t = long */
                          flags += 8;
                        }
                      cp++;
                    }
#if defined __APPLE__ && defined __MACH__
                  /* On MacOS X 10.3, PRIdMAX is defined as "qd".
                     We cannot change it to "lld" because PRIdMAX must also
                     be understood by the system's printf routines.  */
                  else if (*cp == 'q')
                    {
                      if (64 / 8 > sizeof (long))
                        {
                          /* int64_t = long long */
                          flags += 16;
                        }
                      else
                        {
                          /* int64_t = long */
                          flags += 8;
                        }
                      cp++;
                    }
#endif
#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
                  /* On native Win32, PRIdMAX is defined as "I64d".
                     We cannot change it to "lld" because PRIdMAX must also
                     be understood by the system's printf routines.  */
                  else if (*cp == 'I' && cp[1] == '6' && cp[2] == '4')
                    {
                      if (64 / 8 > sizeof (long))
                        {
                          /* __int64 = long long */
                          flags += 16;
                        }
                      else
                        {
                          /* __int64 = long */
                          flags += 8;
                        }
                      cp += 3;
                    }
#endif
                  else
                    break;
                }

              /* Read the conversion character.  */
              c = *cp++;
              switch (c)
                {
                case 'd': case 'i':
#if HAVE_LONG_LONG_INT
                  /* If 'long long' exists and is larger than 'long':  */
                  if (flags >= 16 || (flags & 4))
                    type = TYPE_LONGLONGINT;
                  else
#endif
                  /* If 'long long' exists and is the same as 'long', we parse
                     "lld" into TYPE_LONGINT.  */
                  if (flags >= 8)
                    type = TYPE_LONGINT;
                  else if (flags & 2)
                    type = TYPE_SCHAR;
                  else if (flags & 1)
                    type = TYPE_SHORT;
                  else
                    type = TYPE_INT;
                  break;
                case 'o': case 'u': case 'x': case 'X':
#if HAVE_LONG_LONG_INT
                  /* If 'long long' exists and is larger than 'long':  */
                  if (flags >= 16 || (flags & 4))
                    type = TYPE_ULONGLONGINT;
                  else
#endif
                  /* If 'unsigned long long' exists and is the same as
                     'unsigned long', we parse "llu" into TYPE_ULONGINT.  */
                  if (flags >= 8)
                    type = TYPE_ULONGINT;
                  else if (flags & 2)
                    type = TYPE_UCHAR;
                  else if (flags & 1)
                    type = TYPE_USHORT;
                  else
                    type = TYPE_UINT;
                  break;
                case 'f': case 'F': case 'e': case 'E': case 'g': case 'G':
                case 'a': case 'A':
                  if (flags >= 16 || (flags & 4))
                    type = TYPE_LONGDOUBLE;
                  else
                    type = TYPE_DOUBLE;
                  break;
                case 'c':
                  if (flags >= 8)
#if HAVE_WINT_T
                    type = TYPE_WIDE_CHAR;
#else
                    goto error;
#endif
                  else
                    type = TYPE_CHAR;
                  break;
#if HAVE_WINT_T
                case 'C':
                  type = TYPE_WIDE_CHAR;
                  c = 'c';
                  break;
#endif
                case 's':
                  if (flags >= 8)
#if HAVE_WCHAR_T
                    type = TYPE_WIDE_STRING;
#else
                    goto error;
#endif
                  else
                    type = TYPE_STRING;
                  break;
#if HAVE_WCHAR_T
                case 'S':
                  type = TYPE_WIDE_STRING;
                  c = 's';
                  break;
#endif
                case 'p':
                  type = TYPE_POINTER;
                  break;
                case 'n':
#if HAVE_LONG_LONG_INT
                  /* If 'long long' exists and is larger than 'long':  */
                  if (flags >= 16 || (flags & 4))
                    type = TYPE_COUNT_LONGLONGINT_POINTER;
                  else
#endif
                  /* If 'long long' exists and is the same as 'long', we parse
                     "lln" into TYPE_COUNT_LONGINT_POINTER.  */
                  if (flags >= 8)
                    type = TYPE_COUNT_LONGINT_POINTER;
                  else if (flags & 2)
                    type = TYPE_COUNT_SCHAR_POINTER;
                  else if (flags & 1)
                    type = TYPE_COUNT_SHORT_POINTER;
                  else
                    type = TYPE_COUNT_INT_POINTER;
                  break;
#if ENABLE_UNISTDIO
                /* The unistdio extensions.  */
                case 'U':
                  if (flags >= 16)
                    type = TYPE_U32_STRING;
                  else if (flags >= 8)
                    type = TYPE_U16_STRING;
                  else
                    type = TYPE_U8_STRING;
                  break;
#endif
                case '%':
                  type = TYPE_NONE;
                  break;
                default:
                  /* Unknown conversion character.  */
                  goto error;
                }
            }

            if (type != TYPE_NONE)
              {
                dp->arg_index = arg_index;
                if (dp->arg_index == ARG_NONE)
                  {
                    dp->arg_index = arg_posn++;
                    if (dp->arg_index == ARG_NONE)
                      /* arg_posn wrapped around.  */
                      goto error;
                  }
                REGISTER_ARG (dp->arg_index, type);
              }
            dp->conversion = c;
            dp->dir_end = cp;
          }

          d->count++;
          if (d->count >= d_allocated)
            {
              size_t memory_size;
              DIRECTIVE *memory;

              d_allocated = xtimes (d_allocated, 2);
              memory_size = xtimes (d_allocated, sizeof (DIRECTIVE));
              if (size_overflow_p (memory_size))
                /* Overflow, would lead to out of memory.  */
                goto out_of_memory;
              memory = (DIRECTIVE *) realloc (d->dir, memory_size);
              if (memory == NULL)
                /* Out of memory.  */
                goto out_of_memory;
              d->dir = memory;
            }
        }
#if CHAR_T_ONLY_ASCII
      else if (!c_isascii (c))
        {
          /* Non-ASCII character.  Not supported.  */
          goto error;
        }
#endif
    }
  d->dir[d->count].dir_start = cp;

  d->max_width_length = max_width_length;
  d->max_precision_length = max_precision_length;
  return 0;

error:
  if (a->arg)
    free (a->arg);
  if (d->dir)
    free (d->dir);
  errno = EINVAL;
  return -1;

out_of_memory:
  if (a->arg)
    free (a->arg);
  if (d->dir)
    free (d->dir);
out_of_memory_1:
  errno = ENOMEM;
  return -1;
}

#undef PRINTF_PARSE
#undef DIRECTIVES
#undef DIRECTIVE
#undef CHAR_T_ONLY_ASCII
#undef CHAR_T
Commit	Line	Data
c4b681fd	1	/* Formatted output to strings.
61cd9dc9	2	Copyright (C) 1999-2000, 2002-2003, 2006-2010 Free Software Foundation, Inc.
c4b681fd LC	3
	4	This program is free software; you can redistribute it and/or modify
	5	it under the terms of the GNU Lesser 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 Lesser General Public License for more details.
	13
	14	You should have received a copy of the GNU Lesser 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	/* This file can be parametrized with the following macros:
	19	CHAR_T The element type of the format string.
	20	CHAR_T_ONLY_ASCII Set to 1 to enable verification that all characters
	21	in the format string are ASCII.
	22	DIRECTIVE Structure denoting a format directive.
	23	Depends on CHAR_T.
	24	DIRECTIVES Structure denoting the set of format directives of a
	25	format string. Depends on CHAR_T.
	26	PRINTF_PARSE Function that parses a format string.
	27	Depends on CHAR_T.
	28	STATIC Set to 'static' to declare the function static.
	29	ENABLE_UNISTDIO Set to 1 to enable the unistdio extensions. */
	30
	31	#ifndef PRINTF_PARSE
	32	# include <config.h>
	33	#endif
	34
	35	/* Specification. */
	36	#ifndef PRINTF_PARSE
	37	# include "printf-parse.h"
	38	#endif
	39
	40	/* Default parameters. */
	41	#ifndef PRINTF_PARSE
	42	# define PRINTF_PARSE printf_parse
	43	# define CHAR_T char
	44	# define DIRECTIVE char_directive
	45	# define DIRECTIVES char_directives
	46	#endif
	47
	48	/* Get size_t, NULL. */
	49	#include <stddef.h>
	50
	51	/* Get intmax_t. */
	52	#if defined IN_LIBINTL \|\| defined IN_LIBASPRINTF
	53	# if HAVE_STDINT_H_WITH_UINTMAX
	54	# include <stdint.h>
	55	# endif
	56	# if HAVE_INTTYPES_H_WITH_UINTMAX
	57	# include <inttypes.h>
	58	# endif
	59	#else
	60	# include <stdint.h>
	61	#endif
	62
	63	/* malloc(), realloc(), free(). */
	64	#include <stdlib.h>
	65
	66	/* errno. */
67	#include <errno.h>
68
69	/* Checked size_t computations. */
70	#include "xsize.h"
71
72	#if CHAR_T_ONLY_ASCII
73	/* c_isascii(). */
74	# include "c-ctype.h"
75	#endif
76
77	#ifdef STATIC
78	STATIC
79	#endif
80	int
81	PRINTF_PARSE (const CHAR_T format, DIRECTIVES d, arguments *a)
82	{
1cd4fffc LC	83	const CHAR_T cp = format; / pointer into format */
	84	size_t arg_posn = 0; /* number of regular arguments consumed */
	85	size_t d_allocated; /* allocated elements of d->dir */
	86	size_t a_allocated; /* allocated elements of a->arg */
c4b681fd LC	87	size_t max_width_length = 0;
	88	size_t max_precision_length = 0;
	89
	90	d->count = 0;
	91	d_allocated = 1;
	92	d->dir = (DIRECTIVE ) malloc (d_allocated sizeof (DIRECTIVE));
	93	if (d->dir == NULL)
	94	/* Out of memory. */
	95	goto out_of_memory_1;
	96
	97	a->count = 0;
	98	a_allocated = 0;
	99	a->arg = NULL;
	100
	101	#define REGISTER_ARG(_index_,_type_) \
1cd4fffc LC	102	{ \
	103	size_t n = (_index_); \
	104	if (n >= a_allocated) \
	105	{ \
	106	size_t memory_size; \
	107	argument *memory; \
	108	\
	109	a_allocated = xtimes (a_allocated, 2); \
	110	if (a_allocated <= n) \
	111	a_allocated = xsum (n, 1); \
	112	memory_size = xtimes (a_allocated, sizeof (argument)); \
	113	if (size_overflow_p (memory_size)) \
	114	/* Overflow, would lead to out of memory. */ \
	115	goto out_of_memory; \
	116	memory = (argument *) (a->arg \
	117	? realloc (a->arg, memory_size) \
	118	: malloc (memory_size)); \
	119	if (memory == NULL) \
	120	/* Out of memory. */ \
	121	goto out_of_memory; \
	122	a->arg = memory; \
	123	} \
	124	while (a->count <= n) \
	125	a->arg[a->count++].type = TYPE_NONE; \
	126	if (a->arg[n].type == TYPE_NONE) \
	127	a->arg[n].type = (_type_); \
	128	else if (a->arg[n].type != (_type_)) \
	129	/* Ambiguous type for positional argument. */ \
	130	goto error; \
c4b681fd LC	131	}
	132
	133	while (*cp != '\0')
	134	{
	135	CHAR_T c = *cp++;
	136	if (c == '%')
1cd4fffc LC	137	{
	138	size_t arg_index = ARG_NONE;
	139	DIRECTIVE dp = &d->dir[d->count]; / pointer to next directive */
	140
	141	/* Initialize the next directive. */
	142	dp->dir_start = cp - 1;
	143	dp->flags = 0;
	144	dp->width_start = NULL;
	145	dp->width_end = NULL;
	146	dp->width_arg_index = ARG_NONE;
	147	dp->precision_start = NULL;
	148	dp->precision_end = NULL;
	149	dp->precision_arg_index = ARG_NONE;
	150	dp->arg_index = ARG_NONE;
	151
	152	/* Test for positional argument. */
	153	if (cp >= '0' && cp <= '9')
	154	{
	155	const CHAR_T *np;
	156
	157	for (np = cp; np >= '0' && np <= '9'; np++)
	158	;
	159	if (*np == '$')
	160	{
	161	size_t n = 0;
	162
	163	for (np = cp; np >= '0' && np <= '9'; np++)
	164	n = xsum (xtimes (n, 10), *np - '0');
	165	if (n == 0)
	166	/* Positional argument 0. */
	167	goto error;
	168	if (size_overflow_p (n))
	169	/* n too large, would lead to out of memory later. */
	170	goto error;
	171	arg_index = n - 1;
	172	cp = np + 1;
	173	}
	174	}
	175
	176	/* Read the flags. */
	177	for (;;)
	178	{
	179	if (*cp == '\'')
	180	{
	181	dp->flags \|= FLAG_GROUP;
	182	cp++;
	183	}
	184	else if (*cp == '-')
	185	{
	186	dp->flags \|= FLAG_LEFT;
	187	cp++;
	188	}
	189	else if (*cp == '+')
	190	{
	191	dp->flags \|= FLAG_SHOWSIGN;
	192	cp++;
	193	}
	194	else if (*cp == ' ')
	195	{
	196	dp->flags \|= FLAG_SPACE;
	197	cp++;
	198	}
	199	else if (*cp == '#')
	200	{
201	dp->flags \|= FLAG_ALT;
202	cp++;
203	}
204	else if (*cp == '0')
205	{
206	dp->flags \|= FLAG_ZERO;
207	cp++;
208	}
0f00f2c3 LC	209	#if __GLIBC__ >= 2 && !defined __UCLIBC__
	210	else if (*cp == 'I')
	211	{
	212	dp->flags \|= FLAG_LOCALIZED;
	213	cp++;
	214	}
	215	#endif
1cd4fffc LC	216	else
	217	break;
	218	}
	219
	220	/* Parse the field width. */
	221	if (cp == '')
	222	{
	223	dp->width_start = cp;
	224	cp++;
	225	dp->width_end = cp;
	226	if (max_width_length < 1)
	227	max_width_length = 1;
	228
	229	/* Test for positional argument. */
	230	if (cp >= '0' && cp <= '9')
	231	{
	232	const CHAR_T *np;
	233
	234	for (np = cp; np >= '0' && np <= '9'; np++)
	235	;
	236	if (*np == '$')
	237	{
	238	size_t n = 0;
	239
	240	for (np = cp; np >= '0' && np <= '9'; np++)
	241	n = xsum (xtimes (n, 10), *np - '0');
	242	if (n == 0)
	243	/* Positional argument 0. */
	244	goto error;
	245	if (size_overflow_p (n))
	246	/* n too large, would lead to out of memory later. */
	247	goto error;
	248	dp->width_arg_index = n - 1;
	249	cp = np + 1;
	250	}
	251	}
	252	if (dp->width_arg_index == ARG_NONE)
	253	{
	254	dp->width_arg_index = arg_posn++;
	255	if (dp->width_arg_index == ARG_NONE)
	256	/* arg_posn wrapped around. */
	257	goto error;
	258	}
	259	REGISTER_ARG (dp->width_arg_index, TYPE_INT);
	260	}
	261	else if (cp >= '0' && cp <= '9')
	262	{
	263	size_t width_length;
	264
	265	dp->width_start = cp;
	266	for (; cp >= '0' && cp <= '9'; cp++)
	267	;
	268	dp->width_end = cp;
	269	width_length = dp->width_end - dp->width_start;
	270	if (max_width_length < width_length)
	271	max_width_length = width_length;
	272	}
	273
	274	/* Parse the precision. */
	275	if (*cp == '.')
	276	{
	277	cp++;
	278	if (cp == '')
	279	{
280	dp->precision_start = cp - 1;
281	cp++;
282	dp->precision_end = cp;
283	if (max_precision_length < 2)
284	max_precision_length = 2;
285
286	/* Test for positional argument. */
287	if (cp >= '0' && cp <= '9')
288	{
289	const CHAR_T *np;
290
291	for (np = cp; np >= '0' && np <= '9'; np++)
292	;
293	if (*np == '$')
294	{
295	size_t n = 0;
296
297	for (np = cp; np >= '0' && np <= '9'; np++)
298	n = xsum (xtimes (n, 10), *np - '0');
299	if (n == 0)
300	/* Positional argument 0. */
301	goto error;
302	if (size_overflow_p (n))
303	/* n too large, would lead to out of memory
304	later. */
305	goto error;
306	dp->precision_arg_index = n - 1;
307	cp = np + 1;
308	}
309	}
310	if (dp->precision_arg_index == ARG_NONE)
311	{
312	dp->precision_arg_index = arg_posn++;
313	if (dp->precision_arg_index == ARG_NONE)
314	/* arg_posn wrapped around. */
315	goto error;
316	}
317	REGISTER_ARG (dp->precision_arg_index, TYPE_INT);
318	}
319	else
320	{
321	size_t precision_length;
322
323	dp->precision_start = cp - 1;
324	for (; cp >= '0' && cp <= '9'; cp++)
325	;
326	dp->precision_end = cp;
327	precision_length = dp->precision_end - dp->precision_start;
328	if (max_precision_length < precision_length)
329	max_precision_length = precision_length;
330	}
331	}
332
333	{
334	arg_type type;
335
336	/* Parse argument type/size specifiers. */
337	{
338	int flags = 0;
339
340	for (;;)
341	{
342	if (*cp == 'h')
343	{
344	flags \|= (1 << (flags & 1));
345	cp++;
346	}
347	else if (*cp == 'L')
348	{
349	flags \|= 4;
350	cp++;
351	}
352	else if (*cp == 'l')
353	{
354	flags += 8;
355	cp++;
356	}
357	else if (*cp == 'j')
358	{
359	if (sizeof (intmax_t) > sizeof (long))
360	{
361	/* intmax_t = long long */
362	flags += 16;
363	}
364	else if (sizeof (intmax_t) > sizeof (int))
365	{
366	/* intmax_t = long */
367	flags += 8;
368	}
369	cp++;
370	}
371	else if (cp == 'z' \|\| cp == 'Z')
372	{
373	/* 'z' is standardized in ISO C 99, but glibc uses 'Z'
374	because the warning facility in gcc-2.95.2 understands
375	only 'Z' (see gcc-2.95.2/gcc/c-common.c:1784). */
376	if (sizeof (size_t) > sizeof (long))
377	{
378	/* size_t = long long */
379	flags += 16;
380	}
381	else if (sizeof (size_t) > sizeof (int))
382	{
383	/* size_t = long */
384	flags += 8;
385	}
386	cp++;
387	}
388	else if (*cp == 't')
389	{
390	if (sizeof (ptrdiff_t) > sizeof (long))
391	{
392	/* ptrdiff_t = long long */
393	flags += 16;
394	}
395	else if (sizeof (ptrdiff_t) > sizeof (int))
396	{
397	/* ptrdiff_t = long */
398	flags += 8;
399	}
400	cp++;
401	}
c4b681fd	402	#if defined __APPLE__ && defined __MACH__
1cd4fffc LC	403	/* On MacOS X 10.3, PRIdMAX is defined as "qd".
	404	We cannot change it to "lld" because PRIdMAX must also
	405	be understood by the system's printf routines. */
	406	else if (*cp == 'q')
	407	{
	408	if (64 / 8 > sizeof (long))
	409	{
	410	/* int64_t = long long */
	411	flags += 16;
	412	}
	413	else
	414	{
	415	/* int64_t = long */
	416	flags += 8;
	417	}
	418	cp++;
	419	}
c4b681fd LC	420	#endif
c4b681fd LC	421	#if (defined _WIN32 \|\| defined __WIN32__) && ! defined __CYGWIN__
1cd4fffc LC	422	/* On native Win32, PRIdMAX is defined as "I64d".
	423	We cannot change it to "lld" because PRIdMAX must also
	424	be understood by the system's printf routines. */
	425	else if (*cp == 'I' && cp[1] == '6' && cp[2] == '4')
	426	{
	427	if (64 / 8 > sizeof (long))
	428	{
	429	/* __int64 = long long */
	430	flags += 16;
	431	}
	432	else
	433	{
	434	/* __int64 = long */
	435	flags += 8;
	436	}
	437	cp += 3;
	438	}
c4b681fd	439	#endif
1cd4fffc LC	440	else
	441	break;
	442	}
	443
	444	/* Read the conversion character. */
	445	c = *cp++;
	446	switch (c)
	447	{
	448	case 'd': case 'i':
c4b681fd	449	#if HAVE_LONG_LONG_INT
1cd4fffc LC	450	/* If 'long long' exists and is larger than 'long': */
	451	if (flags >= 16 \|\| (flags & 4))
	452	type = TYPE_LONGLONGINT;
	453	else
c4b681fd	454	#endif
1cd4fffc LC	455	/* If 'long long' exists and is the same as 'long', we parse
	456	"lld" into TYPE_LONGINT. */
	457	if (flags >= 8)
	458	type = TYPE_LONGINT;
	459	else if (flags & 2)
	460	type = TYPE_SCHAR;
	461	else if (flags & 1)
	462	type = TYPE_SHORT;
	463	else
	464	type = TYPE_INT;
	465	break;
	466	case 'o': case 'u': case 'x': case 'X':
c4b681fd	467	#if HAVE_LONG_LONG_INT
1cd4fffc LC	468	/* If 'long long' exists and is larger than 'long': */
	469	if (flags >= 16 \|\| (flags & 4))
	470	type = TYPE_ULONGLONGINT;
	471	else
c4b681fd	472	#endif
1cd4fffc LC	473	/* If 'unsigned long long' exists and is the same as
	474	'unsigned long', we parse "llu" into TYPE_ULONGINT. */
	475	if (flags >= 8)
	476	type = TYPE_ULONGINT;
	477	else if (flags & 2)
	478	type = TYPE_UCHAR;
	479	else if (flags & 1)
	480	type = TYPE_USHORT;
	481	else
	482	type = TYPE_UINT;
	483	break;
	484	case 'f': case 'F': case 'e': case 'E': case 'g': case 'G':
	485	case 'a': case 'A':
	486	if (flags >= 16 \|\| (flags & 4))
	487	type = TYPE_LONGDOUBLE;
	488	else
	489	type = TYPE_DOUBLE;
	490	break;
	491	case 'c':
	492	if (flags >= 8)
c4b681fd	493	#if HAVE_WINT_T
1cd4fffc	494	type = TYPE_WIDE_CHAR;
c4b681fd	495	#else
1cd4fffc	496	goto error;
c4b681fd	497	#endif
1cd4fffc LC	498	else
	499	type = TYPE_CHAR;
	500	break;
c4b681fd	501	#if HAVE_WINT_T
1cd4fffc LC	502	case 'C':
	503	type = TYPE_WIDE_CHAR;
	504	c = 'c';
	505	break;
c4b681fd	506	#endif
1cd4fffc LC	507	case 's':
1cd4fffc LC	508	if (flags >= 8)
c4b681fd	509	#if HAVE_WCHAR_T
1cd4fffc	510	type = TYPE_WIDE_STRING;
c4b681fd	511	#else
1cd4fffc	512	goto error;
c4b681fd	513	#endif
1cd4fffc LC	514	else
	515	type = TYPE_STRING;
	516	break;
c4b681fd	517	#if HAVE_WCHAR_T
1cd4fffc LC	518	case 'S':
	519	type = TYPE_WIDE_STRING;
	520	c = 's';
	521	break;
c4b681fd	522	#endif
1cd4fffc LC	523	case 'p':
	524	type = TYPE_POINTER;
	525	break;
	526	case 'n':
c4b681fd	527	#if HAVE_LONG_LONG_INT
1cd4fffc LC	528	/* If 'long long' exists and is larger than 'long': */
	529	if (flags >= 16 \|\| (flags & 4))
	530	type = TYPE_COUNT_LONGLONGINT_POINTER;
	531	else
c4b681fd	532	#endif
1cd4fffc LC	533	/* If 'long long' exists and is the same as 'long', we parse
	534	"lln" into TYPE_COUNT_LONGINT_POINTER. */
	535	if (flags >= 8)
	536	type = TYPE_COUNT_LONGINT_POINTER;
	537	else if (flags & 2)
	538	type = TYPE_COUNT_SCHAR_POINTER;
	539	else if (flags & 1)
	540	type = TYPE_COUNT_SHORT_POINTER;
	541	else
	542	type = TYPE_COUNT_INT_POINTER;
	543	break;
c4b681fd	544	#if ENABLE_UNISTDIO
1cd4fffc LC	545	/* The unistdio extensions. */
	546	case 'U':
	547	if (flags >= 16)
	548	type = TYPE_U32_STRING;
	549	else if (flags >= 8)
	550	type = TYPE_U16_STRING;
	551	else
	552	type = TYPE_U8_STRING;
	553	break;
c4b681fd	554	#endif
1cd4fffc LC	555	case '%':
	556	type = TYPE_NONE;
	557	break;
	558	default:
	559	/* Unknown conversion character. */
	560	goto error;
	561	}
	562	}
	563
	564	if (type != TYPE_NONE)
	565	{
	566	dp->arg_index = arg_index;
	567	if (dp->arg_index == ARG_NONE)
	568	{
	569	dp->arg_index = arg_posn++;
	570	if (dp->arg_index == ARG_NONE)
	571	/* arg_posn wrapped around. */
	572	goto error;
	573	}
	574	REGISTER_ARG (dp->arg_index, type);
	575	}
	576	dp->conversion = c;
	577	dp->dir_end = cp;
	578	}
	579
	580	d->count++;
	581	if (d->count >= d_allocated)
	582	{
	583	size_t memory_size;
	584	DIRECTIVE *memory;
	585
	586	d_allocated = xtimes (d_allocated, 2);
	587	memory_size = xtimes (d_allocated, sizeof (DIRECTIVE));
	588	if (size_overflow_p (memory_size))
	589	/* Overflow, would lead to out of memory. */
	590	goto out_of_memory;
	591	memory = (DIRECTIVE *) realloc (d->dir, memory_size);
	592	if (memory == NULL)
	593	/* Out of memory. */
	594	goto out_of_memory;
	595	d->dir = memory;
	596	}
	597	}
c4b681fd LC	598	#if CHAR_T_ONLY_ASCII
c4b681fd LC	599	else if (!c_isascii (c))
1cd4fffc LC	600	{
	601	/* Non-ASCII character. Not supported. */
	602	goto error;
	603	}
c4b681fd LC	604	#endif
	605	}
	606	d->dir[d->count].dir_start = cp;
	607
	608	d->max_width_length = max_width_length;
	609	d->max_precision_length = max_precision_length;
	610	return 0;
	611
	612	error:
	613	if (a->arg)
	614	free (a->arg);
	615	if (d->dir)
	616	free (d->dir);
	617	errno = EINVAL;
	618	return -1;
	619
	620	out_of_memory:
	621	if (a->arg)
	622	free (a->arg);
	623	if (d->dir)
	624	free (d->dir);
	625	out_of_memory_1:
	626	errno = ENOMEM;
	627	return -1;
	628	}
	629
	630	#undef PRINTF_PARSE
	631	#undef DIRECTIVES
	632	#undef DIRECTIVE
	633	#undef CHAR_T_ONLY_ASCII
	634	#undef CHAR_T