mirror of
git://git.gnupg.org/gnupg.git
synced 2024-09-21 15:01:41 +02:00
538 lines
12 KiB
C
538 lines
12 KiB
C
![]() |
/* Formatted output to strings.
|
||
|
Copyright (C) 1999-2000, 2002-2003 Free Software Foundation, Inc.
|
||
|
|
||
|
This program is free software; you can redistribute it and/or modify it
|
||
|
under the terms of the GNU Library 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
|
||
|
Library General Public License for more details.
|
||
|
|
||
|
You should have received a copy of the GNU Library General Public
|
||
|
License along with this program; if not, write to the Free Software
|
||
|
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
|
||
|
USA. */
|
||
|
|
||
|
#ifdef HAVE_CONFIG_H
|
||
|
# include <config.h>
|
||
|
#endif
|
||
|
|
||
|
/* Specification. */
|
||
|
#if WIDE_CHAR_VERSION
|
||
|
# include "wprintf-parse.h"
|
||
|
#else
|
||
|
# include "printf-parse.h"
|
||
|
#endif
|
||
|
|
||
|
/* Get size_t, NULL. */
|
||
|
#include <stddef.h>
|
||
|
|
||
|
/* Get intmax_t. */
|
||
|
#if HAVE_STDINT_H_WITH_UINTMAX
|
||
|
# include <stdint.h>
|
||
|
#endif
|
||
|
#if HAVE_INTTYPES_H_WITH_UINTMAX
|
||
|
# include <inttypes.h>
|
||
|
#endif
|
||
|
|
||
|
/* malloc(), realloc(), free(). */
|
||
|
#include <stdlib.h>
|
||
|
|
||
|
/* Checked size_t computations. */
|
||
|
#include "xsize.h"
|
||
|
|
||
|
#if WIDE_CHAR_VERSION
|
||
|
# define PRINTF_PARSE wprintf_parse
|
||
|
# define CHAR_T wchar_t
|
||
|
# define DIRECTIVE wchar_t_directive
|
||
|
# define DIRECTIVES wchar_t_directives
|
||
|
#else
|
||
|
# define PRINTF_PARSE printf_parse
|
||
|
# define CHAR_T char
|
||
|
# define DIRECTIVE char_directive
|
||
|
# define DIRECTIVES char_directives
|
||
|
#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 = malloc (d_allocated * sizeof (DIRECTIVE));
|
||
|
if (d->dir == NULL)
|
||
|
/* Out of memory. */
|
||
|
return -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 error; \
|
||
|
memory = (a->arg \
|
||
|
? realloc (a->arg, memory_size) \
|
||
|
: malloc (memory_size)); \
|
||
|
if (memory == NULL) \
|
||
|
/* Out of memory. */ \
|
||
|
goto error; \
|
||
|
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 == '$')
|
||
|
{
|
||
|
size_t n = 0;
|
||
|
|
||
|
for (np = cp; *np >= '0' && *np <= '9'; np++)
|
||
|
n = xsum (xtimes (n, 10), *np - '0');
|
||
|
if (n == 0)
|
||
|
/* Positional argument 0. */
|
||
|
goto error;
|
||
|
if (size_overflow_p (n))
|
||
|
/* n too large, would lead to out of memory later. */
|
||
|
goto error;
|
||
|
arg_index = n - 1;
|
||
|
cp = np + 1;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/* Read the flags. */
|
||
|
for (;;)
|
||
|
{
|
||
|
if (*cp == '\'')
|
||
|
{
|
||
|
dp->flags |= FLAG_GROUP;
|
||
|
cp++;
|
||
|
}
|
||
|
else if (*cp == '-')
|
||
|
{
|
||
|
dp->flags |= FLAG_LEFT;
|
||
|
cp++;
|
||
|
}
|
||
|
else if (*cp == '+')
|
||
|
{
|
||
|
dp->flags |= FLAG_SHOWSIGN;
|
||
|
cp++;
|
||
|
}
|
||
|
else if (*cp == ' ')
|
||
|
{
|
||
|
dp->flags |= FLAG_SPACE;
|
||
|
cp++;
|
||
|
}
|
||
|
else if (*cp == '#')
|
||
|
{
|
||
|
dp->flags |= FLAG_ALT;
|
||
|
cp++;
|
||
|
}
|
||
|
else if (*cp == '0')
|
||
|
{
|
||
|
dp->flags |= FLAG_ZERO;
|
||
|
cp++;
|
||
|
}
|
||
|
else
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
/* Parse the field width. */
|
||
|
if (*cp == '*')
|
||
|
{
|
||
|
dp->width_start = cp;
|
||
|
cp++;
|
||
|
dp->width_end = cp;
|
||
|
if (max_width_length < 1)
|
||
|
max_width_length = 1;
|
||
|
|
||
|
/* Test for positional argument. */
|
||
|
if (*cp >= '0' && *cp <= '9')
|
||
|
{
|
||
|
const CHAR_T *np;
|
||
|
|
||
|
for (np = cp; *np >= '0' && *np <= '9'; np++)
|
||
|
;
|
||
|
if (*np == '$')
|
||
|
{
|
||
|
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++;
|
||
|
}
|
||
|
#ifdef HAVE_INTMAX_T
|
||
|
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++;
|
||
|
}
|
||
|
#endif
|
||
|
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++;
|
||
|
}
|
||
|
else
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
/* Read the conversion character. */
|
||
|
c = *cp++;
|
||
|
switch (c)
|
||
|
{
|
||
|
case 'd': case 'i':
|
||
|
#ifdef HAVE_LONG_LONG
|
||
|
if (flags >= 16 || (flags & 4))
|
||
|
type = TYPE_LONGLONGINT;
|
||
|
else
|
||
|
#endif
|
||
|
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':
|
||
|
#ifdef HAVE_LONG_LONG
|
||
|
if (flags >= 16 || (flags & 4))
|
||
|
type = TYPE_ULONGLONGINT;
|
||
|
else
|
||
|
#endif
|
||
|
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':
|
||
|
#ifdef HAVE_LONG_DOUBLE
|
||
|
if (flags >= 16 || (flags & 4))
|
||
|
type = TYPE_LONGDOUBLE;
|
||
|
else
|
||
|
#endif
|
||
|
type = TYPE_DOUBLE;
|
||
|
break;
|
||
|
case 'c':
|
||
|
if (flags >= 8)
|
||
|
#ifdef HAVE_WINT_T
|
||
|
type = TYPE_WIDE_CHAR;
|
||
|
#else
|
||
|
goto error;
|
||
|
#endif
|
||
|
else
|
||
|
type = TYPE_CHAR;
|
||
|
break;
|
||
|
#ifdef HAVE_WINT_T
|
||
|
case 'C':
|
||
|
type = TYPE_WIDE_CHAR;
|
||
|
c = 'c';
|
||
|
break;
|
||
|
#endif
|
||
|
case 's':
|
||
|
if (flags >= 8)
|
||
|
#ifdef HAVE_WCHAR_T
|
||
|
type = TYPE_WIDE_STRING;
|
||
|
#else
|
||
|
goto error;
|
||
|
#endif
|
||
|
else
|
||
|
type = TYPE_STRING;
|
||
|
break;
|
||
|
#ifdef HAVE_WCHAR_T
|
||
|
case 'S':
|
||
|
type = TYPE_WIDE_STRING;
|
||
|
c = 's';
|
||
|
break;
|
||
|
#endif
|
||
|
case 'p':
|
||
|
type = TYPE_POINTER;
|
||
|
break;
|
||
|
case 'n':
|
||
|
#ifdef HAVE_LONG_LONG
|
||
|
if (flags >= 16 || (flags & 4))
|
||
|
type = TYPE_COUNT_LONGLONGINT_POINTER;
|
||
|
else
|
||
|
#endif
|
||
|
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;
|
||
|
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 error;
|
||
|
memory = realloc (d->dir, memory_size);
|
||
|
if (memory == NULL)
|
||
|
/* Out of memory. */
|
||
|
goto error;
|
||
|
d->dir = memory;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
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);
|
||
|
return -1;
|
||
|
}
|
||
|
|
||
|
#undef DIRECTIVES
|
||
|
#undef DIRECTIVE
|
||
|
#undef CHAR_T
|
||
|
#undef PRINTF_PARSE
|