mirror of
https://github.com/autc04/Retro68.git
synced 2024-11-25 14:34:29 +00:00
640 lines
22 KiB
C
640 lines
22 KiB
C
/* Formatted output to strings.
|
|
Copyright (C) 1999-2000, 2002-2003, 2006-2008, 2011, 2015-2016 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 2.1 of the License, 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, see <http://www.gnu.org/licenses/>. */
|
|
|
|
/* 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>
|
|
|
|
/* memcpy(). */
|
|
#include <string.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 = N_DIRECT_ALLOC_DIRECTIVES;
|
|
d->dir = d->direct_alloc_dir;
|
|
|
|
a->count = 0;
|
|
a_allocated = N_DIRECT_ALLOC_ARGUMENTS;
|
|
a->arg = a->direct_alloc_arg;
|
|
|
|
#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 != a->direct_alloc_arg \
|
|
? realloc (a->arg, memory_size) \
|
|
: malloc (memory_size)); \
|
|
if (memory == NULL) \
|
|
/* Out of memory. */ \
|
|
goto out_of_memory; \
|
|
if (a->arg == a->direct_alloc_arg) \
|
|
memcpy (memory, a->arg, a->count * sizeof (argument)); \
|
|
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 *) (d->dir != d->direct_alloc_dir
|
|
? realloc (d->dir, memory_size)
|
|
: malloc (memory_size));
|
|
if (memory == NULL)
|
|
/* Out of memory. */
|
|
goto out_of_memory;
|
|
if (d->dir == d->direct_alloc_dir)
|
|
memcpy (memory, d->dir, d->count * sizeof (DIRECTIVE));
|
|
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 != a->direct_alloc_arg)
|
|
free (a->arg);
|
|
if (d->dir != d->direct_alloc_dir)
|
|
free (d->dir);
|
|
errno = EINVAL;
|
|
return -1;
|
|
|
|
out_of_memory:
|
|
if (a->arg != a->direct_alloc_arg)
|
|
free (a->arg);
|
|
if (d->dir != d->direct_alloc_dir)
|
|
free (d->dir);
|
|
errno = ENOMEM;
|
|
return -1;
|
|
}
|
|
|
|
#undef PRINTF_PARSE
|
|
#undef DIRECTIVES
|
|
#undef DIRECTIVE
|
|
#undef CHAR_T_ONLY_ASCII
|
|
#undef CHAR_T
|