/* vsprintf with automatic memory allocation.
- Copyright (C) 1999, 2002-2003 Free Software Foundation, Inc.
+ Copyright (C) 1999, 2002-2007 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)
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU 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.
+ 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 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. */
+ You should have received a copy of the GNU 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. */
/* Tell glibc's <stdio.h> to provide a prototype for snprintf().
This must come before <config.h> because <config.h> may include
# define _GNU_SOURCE 1
#endif
-#ifdef HAVE_CONFIG_H
-# include <config.h>
+#include <config.h>
+#ifndef IN_LIBINTL
+# include <alloca.h>
#endif
-#include <alloca.h>
/* Specification. */
-#include "vasnprintf.h"
+#if WIDE_CHAR_VERSION
+# include "vasnwprintf.h"
+#else
+# include "vasnprintf.h"
+#endif
+#include <locale.h> /* localeconv() */
#include <stdio.h> /* snprintf(), sprintf() */
#include <stdlib.h> /* abort(), malloc(), realloc(), free() */
#include <string.h> /* memcpy(), strlen() */
#include <errno.h> /* errno */
#include <limits.h> /* CHAR_BIT */
#include <float.h> /* DBL_MAX_EXP, LDBL_MAX_EXP */
-#include "printf-parse.h"
+#if WIDE_CHAR_VERSION
+# include "wprintf-parse.h"
+#else
+# include "printf-parse.h"
+#endif
+
+/* Checked size_t computations. */
+#include "xsize.h"
+
+#if NEED_PRINTF_DIRECTIVE_A && !defined IN_LIBINTL
+# include "isnan.h"
+# include "isnanl.h"
+# if HAVE_LONG_DOUBLE
+# include "printf-frexp.h"
+# include "printf-frexpl.h"
+# endif
+#endif
+
+#if HAVE_WCHAR_T
+# if HAVE_WCSLEN
+# define local_wcslen wcslen
+# else
+ /* Solaris 2.5.1 has wcslen() in a separate library libw.so. To avoid
+ a dependency towards this library, here is a local substitute.
+ Define this substitute only once, even if this file is included
+ twice in the same compilation unit. */
+# ifndef local_wcslen_defined
+# define local_wcslen_defined 1
+static size_t
+local_wcslen (const wchar_t *s)
+{
+ const wchar_t *ptr;
+
+ for (ptr = s; *ptr != (wchar_t) 0; ptr++)
+ ;
+ return ptr - s;
+}
+# endif
+# endif
+#endif
-/* For those losing systems which don't have 'alloca' we have to add
- some additional code emulating it. */
-#ifdef HAVE_ALLOCA
-# define freea(p) /* nothing */
+#if WIDE_CHAR_VERSION
+# define VASNPRINTF vasnwprintf
+# define CHAR_T wchar_t
+# define DIRECTIVE wchar_t_directive
+# define DIRECTIVES wchar_t_directives
+# define PRINTF_PARSE wprintf_parse
+# define USE_SNPRINTF 1
+# if HAVE_DECL__SNWPRINTF
+ /* On Windows, the function swprintf() has a different signature than
+ on Unix; we use the _snwprintf() function instead. */
+# define SNPRINTF _snwprintf
+# else
+ /* Unix. */
+# define SNPRINTF swprintf
+# endif
#else
-# define alloca(n) malloc (n)
-# define freea(p) free (p)
+# define VASNPRINTF vasnprintf
+# define CHAR_T char
+# define DIRECTIVE char_directive
+# define DIRECTIVES char_directives
+# define PRINTF_PARSE printf_parse
+# define USE_SNPRINTF (HAVE_DECL__SNPRINTF || HAVE_SNPRINTF)
+# if HAVE_DECL__SNPRINTF
+ /* Windows. */
+# define SNPRINTF _snprintf
+# else
+ /* Unix. */
+# define SNPRINTF snprintf
+# endif
#endif
-char *
-vasnprintf (char *resultbuf, size_t *lengthp, const char *format, va_list args)
+CHAR_T *
+VASNPRINTF (CHAR_T *resultbuf, size_t *lengthp, const CHAR_T *format, va_list args)
{
- char_directives d;
+ DIRECTIVES d;
arguments a;
- if (printf_parse (format, &d, &a) < 0)
+ if (PRINTF_PARSE (format, &d, &a) < 0)
{
errno = EINVAL;
return NULL;
}
{
- char *buf =
- (char *) alloca (7 + d.max_width_length + d.max_precision_length + 6);
- const char *cp;
- unsigned int i;
- char_directive *dp;
+ size_t buf_neededlength;
+ CHAR_T *buf;
+ CHAR_T *buf_malloced;
+ const CHAR_T *cp;
+ size_t i;
+ DIRECTIVE *dp;
/* Output string accumulator. */
- char *result;
+ CHAR_T *result;
size_t allocated;
size_t length;
+ /* Allocate a small buffer that will hold a directive passed to
+ sprintf or snprintf. */
+ buf_neededlength =
+ xsum4 (7, d.max_width_length, d.max_precision_length, 6);
+#if HAVE_ALLOCA
+ if (buf_neededlength < 4000 / sizeof (CHAR_T))
+ {
+ buf = (CHAR_T *) alloca (buf_neededlength * sizeof (CHAR_T));
+ buf_malloced = NULL;
+ }
+ else
+#endif
+ {
+ size_t buf_memsize = xtimes (buf_neededlength, sizeof (CHAR_T));
+ if (size_overflow_p (buf_memsize))
+ goto out_of_memory_1;
+ buf = (CHAR_T *) malloc (buf_memsize);
+ if (buf == NULL)
+ goto out_of_memory_1;
+ buf_malloced = buf;
+ }
+
if (resultbuf != NULL)
{
result = resultbuf;
result is either == resultbuf or == NULL or malloc-allocated.
If length > 0, then result != NULL. */
+ /* Ensures that allocated >= needed. Aborts through a jump to
+ out_of_memory if needed is SIZE_MAX or otherwise too big. */
#define ENSURE_ALLOCATION(needed) \
- if ((needed) > allocated) \
- { \
- char *memory; \
- \
- allocated = (allocated > 0 ? 2 * allocated : 12); \
- if ((needed) > allocated) \
- allocated = (needed); \
- if (result == resultbuf || result == NULL) \
- memory = (char *) malloc (allocated); \
- else \
- memory = (char *) realloc (result, allocated); \
- \
- if (memory == NULL) \
- { \
- if (!(result == resultbuf || result == NULL)) \
- free (result); \
- freea (buf); \
- CLEANUP (); \
- errno = ENOMEM; \
- return NULL; \
- } \
- if (result == resultbuf && length > 0) \
- memcpy (memory, result, length); \
- result = memory; \
+ if ((needed) > allocated) \
+ { \
+ size_t memory_size; \
+ CHAR_T *memory; \
+ \
+ allocated = (allocated > 0 ? xtimes (allocated, 2) : 12); \
+ if ((needed) > allocated) \
+ allocated = (needed); \
+ memory_size = xtimes (allocated, sizeof (CHAR_T)); \
+ if (size_overflow_p (memory_size)) \
+ goto out_of_memory; \
+ if (result == resultbuf || result == NULL) \
+ memory = (CHAR_T *) malloc (memory_size); \
+ else \
+ memory = (CHAR_T *) realloc (result, memory_size); \
+ if (memory == NULL) \
+ goto out_of_memory; \
+ if (result == resultbuf && length > 0) \
+ memcpy (memory, result, length * sizeof (CHAR_T)); \
+ result = memory; \
}
for (cp = format, i = 0, dp = &d.dir[0]; ; cp = dp->dir_end, i++, dp++)
if (cp != dp->dir_start)
{
size_t n = dp->dir_start - cp;
+ size_t augmented_length = xsum (length, n);
- ENSURE_ALLOCATION (length + n);
- memcpy (result + length, cp, n);
- length += n;
+ ENSURE_ALLOCATION (augmented_length);
+ memcpy (result + length, cp, n * sizeof (CHAR_T));
+ length = augmented_length;
}
if (i == d.count)
break;
/* Execute a single directive. */
if (dp->conversion == '%')
{
- if (!(dp->arg_index < 0))
+ size_t augmented_length;
+
+ if (!(dp->arg_index == ARG_NONE))
abort ();
- ENSURE_ALLOCATION (length + 1);
+ augmented_length = xsum (length, 1);
+ ENSURE_ALLOCATION (augmented_length);
result[length] = '%';
- length += 1;
+ length = augmented_length;
}
else
{
- if (!(dp->arg_index >= 0))
+ if (!(dp->arg_index != ARG_NONE))
abort ();
if (dp->conversion == 'n')
case TYPE_COUNT_LONGINT_POINTER:
*a.arg[dp->arg_index].a.a_count_longint_pointer = length;
break;
-#ifdef HAVE_LONG_LONG
+#if HAVE_LONG_LONG_INT
case TYPE_COUNT_LONGLONGINT_POINTER:
*a.arg[dp->arg_index].a.a_count_longlongint_pointer = length;
break;
abort ();
}
}
+#if NEED_PRINTF_DIRECTIVE_A && !defined IN_LIBINTL
+ else if (dp->conversion == 'a' || dp->conversion == 'A')
+ {
+ arg_type type = a.arg[dp->arg_index].type;
+ int flags = dp->flags;
+ int has_width;
+ size_t width;
+ int has_precision;
+ size_t precision;
+ size_t tmp_length;
+ CHAR_T tmpbuf[700];
+ CHAR_T *tmp;
+ CHAR_T *pad_ptr;
+ CHAR_T *p;
+
+ has_width = 0;
+ width = 0;
+ if (dp->width_start != dp->width_end)
+ {
+ if (dp->width_arg_index != ARG_NONE)
+ {
+ int arg;
+
+ if (!(a.arg[dp->width_arg_index].type == TYPE_INT))
+ abort ();
+ arg = a.arg[dp->width_arg_index].a.a_int;
+ if (arg < 0)
+ {
+ /* "A negative field width is taken as a '-' flag
+ followed by a positive field width." */
+ flags |= FLAG_LEFT;
+ width = (unsigned int) (-arg);
+ }
+ else
+ width = arg;
+ }
+ else
+ {
+ const CHAR_T *digitp = dp->width_start;
+
+ do
+ width = xsum (xtimes (width, 10), *digitp++ - '0');
+ while (digitp != dp->width_end);
+ }
+ has_width = 1;
+ }
+
+ has_precision = 0;
+ precision = 0;
+ if (dp->precision_start != dp->precision_end)
+ {
+ if (dp->precision_arg_index != ARG_NONE)
+ {
+ int arg;
+
+ if (!(a.arg[dp->precision_arg_index].type == TYPE_INT))
+ abort ();
+ arg = a.arg[dp->precision_arg_index].a.a_int;
+ /* "A negative precision is taken as if the precision
+ were omitted." */
+ if (arg >= 0)
+ {
+ precision = arg;
+ has_precision = 1;
+ }
+ }
+ else
+ {
+ const CHAR_T *digitp = dp->precision_start + 1;
+
+ precision = 0;
+ while (digitp != dp->precision_end)
+ precision = xsum (xtimes (precision, 10), *digitp++ - '0');
+ has_precision = 1;
+ }
+ }
+
+ /* Allocate a temporary buffer of sufficient size. */
+# if HAVE_LONG_DOUBLE
+ if (type == TYPE_LONGDOUBLE)
+ tmp_length =
+ (unsigned int) ((LDBL_DIG + 1)
+ * 0.831 /* decimal -> hexadecimal */
+ )
+ + 1; /* turn floor into ceil */
+ else
+# endif
+ tmp_length =
+ (unsigned int) ((DBL_DIG + 1)
+ * 0.831 /* decimal -> hexadecimal */
+ )
+ + 1; /* turn floor into ceil */
+ if (tmp_length < precision)
+ tmp_length = precision;
+ /* Account for sign, decimal point etc. */
+ tmp_length = xsum (tmp_length, 12);
+
+ if (tmp_length < width)
+ tmp_length = width;
+
+ tmp_length = xsum (tmp_length, 1); /* account for trailing NUL */
+
+ if (tmp_length <= sizeof (tmpbuf) / sizeof (CHAR_T))
+ tmp = tmpbuf;
+ else
+ {
+ size_t tmp_memsize = xtimes (tmp_length, sizeof (CHAR_T));
+
+ if (size_overflow_p (tmp_memsize))
+ /* Overflow, would lead to out of memory. */
+ goto out_of_memory;
+ tmp = (CHAR_T *) malloc (tmp_memsize);
+ if (tmp == NULL)
+ /* Out of memory. */
+ goto out_of_memory;
+ }
+
+ pad_ptr = NULL;
+ p = tmp;
+# if HAVE_LONG_DOUBLE
+ if (type == TYPE_LONGDOUBLE)
+ {
+ long double arg = a.arg[dp->arg_index].a.a_longdouble;
+
+ if (isnanl (arg))
+ {
+ if (dp->conversion == 'A')
+ {
+ *p++ = 'N'; *p++ = 'A'; *p++ = 'N';
+ }
+ else
+ {
+ *p++ = 'n'; *p++ = 'a'; *p++ = 'n';
+ }
+ }
+ else
+ {
+ int sign = 0;
+
+ if (arg < 0.0L)
+ {
+ sign = -1;
+ arg = -arg;
+ }
+ else if (arg == 0.0L)
+ {
+ /* Distinguish 0.0L and -0.0L. */
+ static long double plus_zero = 0.0L;
+ long double arg_mem = arg;
+ if (memcmp (&plus_zero, &arg_mem, sizeof (long double)) != 0)
+ {
+ sign = -1;
+ arg = -arg;
+ }
+ }
+
+ if (sign < 0)
+ *p++ = '-';
+ else if (flags & FLAG_SHOWSIGN)
+ *p++ = '+';
+ else if (flags & FLAG_SPACE)
+ *p++ = ' ';
+
+ if (arg > 0.0L && arg + arg == arg)
+ {
+ if (dp->conversion == 'A')
+ {
+ *p++ = 'I'; *p++ = 'N'; *p++ = 'F';
+ }
+ else
+ {
+ *p++ = 'i'; *p++ = 'n'; *p++ = 'f';
+ }
+ }
+ else
+ {
+ int exponent;
+ long double mantissa;
+
+ if (arg > 0.0L)
+ mantissa = printf_frexpl (arg, &exponent);
+ else
+ {
+ exponent = 0;
+ mantissa = 0.0L;
+ }
+
+ if (has_precision
+ && precision < (unsigned int) ((LDBL_DIG + 1) * 0.831) + 1)
+ {
+ /* Round the mantissa. */
+ long double tail = mantissa;
+ size_t q;
+
+ for (q = precision; ; q--)
+ {
+ int digit = (int) tail;
+ tail -= digit;
+ if (q == 0)
+ {
+ if (digit & 1 ? tail >= 0.5L : tail > 0.5L)
+ tail = 1 - tail;
+ else
+ tail = - tail;
+ break;
+ }
+ tail *= 16.0L;
+ }
+ if (tail != 0.0L)
+ for (q = precision; q > 0; q--)
+ tail *= 0.0625L;
+ mantissa += tail;
+ }
+
+ *p++ = '0';
+ *p++ = dp->conversion - 'A' + 'X';
+ pad_ptr = p;
+ {
+ int digit;
+
+ digit = (int) mantissa;
+ mantissa -= digit;
+ *p++ = '0' + digit;
+ if ((flags & FLAG_ALT)
+ || mantissa > 0.0L || precision > 0)
+ {
+ const char *point =
+ localeconv () -> decimal_point;
+ /* The decimal point is always a single byte:
+ either '.' or ','. */
+ *p++ = (point[0] != '\0' ? point[0] : '.');
+ /* This loop terminates because we assume
+ that FLT_RADIX is a power of 2. */
+ while (mantissa > 0.0L)
+ {
+ mantissa *= 16.0L;
+ digit = (int) mantissa;
+ mantissa -= digit;
+ *p++ = digit
+ + (digit < 10
+ ? '0'
+ : dp->conversion - 10);
+ if (precision > 0)
+ precision--;
+ }
+ while (precision > 0)
+ {
+ *p++ = '0';
+ precision--;
+ }
+ }
+ }
+ *p++ = dp->conversion - 'A' + 'P';
+# if WIDE_CHAR_VERSION
+ {
+ static const wchar_t decimal_format[] =
+ { '%', '+', 'd', '\0' };
+ SNPRINTF (p, 6 + 1, decimal_format, exponent);
+ }
+# else
+ sprintf (p, "%+d", exponent);
+# endif
+ while (*p != '\0')
+ p++;
+ }
+ }
+ }
+ else
+# endif
+ {
+ double arg = a.arg[dp->arg_index].a.a_double;
+
+ if (isnan (arg))
+ {
+ if (dp->conversion == 'A')
+ {
+ *p++ = 'N'; *p++ = 'A'; *p++ = 'N';
+ }
+ else
+ {
+ *p++ = 'n'; *p++ = 'a'; *p++ = 'n';
+ }
+ }
+ else
+ {
+ int sign = 0;
+
+ if (arg < 0.0)
+ {
+ sign = -1;
+ arg = -arg;
+ }
+ else if (arg == 0.0)
+ {
+ /* Distinguish 0.0 and -0.0. */
+ static double plus_zero = 0.0;
+ double arg_mem = arg;
+ if (memcmp (&plus_zero, &arg_mem, sizeof (double)) != 0)
+ {
+ sign = -1;
+ arg = -arg;
+ }
+ }
+
+ if (sign < 0)
+ *p++ = '-';
+ else if (flags & FLAG_SHOWSIGN)
+ *p++ = '+';
+ else if (flags & FLAG_SPACE)
+ *p++ = ' ';
+
+ if (arg > 0.0 && arg + arg == arg)
+ {
+ if (dp->conversion == 'A')
+ {
+ *p++ = 'I'; *p++ = 'N'; *p++ = 'F';
+ }
+ else
+ {
+ *p++ = 'i'; *p++ = 'n'; *p++ = 'f';
+ }
+ }
+ else
+ {
+ int exponent;
+ double mantissa;
+
+ if (arg > 0.0)
+ mantissa = printf_frexp (arg, &exponent);
+ else
+ {
+ exponent = 0;
+ mantissa = 0.0;
+ }
+
+ if (has_precision
+ && precision < (unsigned int) ((DBL_DIG + 1) * 0.831) + 1)
+ {
+ /* Round the mantissa. */
+ double tail = mantissa;
+ size_t q;
+
+ for (q = precision; ; q--)
+ {
+ int digit = (int) tail;
+ tail -= digit;
+ if (q == 0)
+ {
+ if (digit & 1 ? tail >= 0.5 : tail > 0.5)
+ tail = 1 - tail;
+ else
+ tail = - tail;
+ break;
+ }
+ tail *= 16.0;
+ }
+ if (tail != 0.0)
+ for (q = precision; q > 0; q--)
+ tail *= 0.0625;
+ mantissa += tail;
+ }
+
+ *p++ = '0';
+ *p++ = dp->conversion - 'A' + 'X';
+ pad_ptr = p;
+ {
+ int digit;
+
+ digit = (int) mantissa;
+ mantissa -= digit;
+ *p++ = '0' + digit;
+ if ((flags & FLAG_ALT)
+ || mantissa > 0.0 || precision > 0)
+ {
+ const char *point =
+ localeconv () -> decimal_point;
+ /* The decimal point is always a single byte:
+ either '.' or ','. */
+ *p++ = (point[0] != '\0' ? point[0] : '.');
+ /* This loop terminates because we assume
+ that FLT_RADIX is a power of 2. */
+ while (mantissa > 0.0)
+ {
+ mantissa *= 16.0;
+ digit = (int) mantissa;
+ mantissa -= digit;
+ *p++ = digit
+ + (digit < 10
+ ? '0'
+ : dp->conversion - 10);
+ if (precision > 0)
+ precision--;
+ }
+ while (precision > 0)
+ {
+ *p++ = '0';
+ precision--;
+ }
+ }
+ }
+ *p++ = dp->conversion - 'A' + 'P';
+# if WIDE_CHAR_VERSION
+ {
+ static const wchar_t decimal_format[] =
+ { '%', '+', 'd', '\0' };
+ SNPRINTF (p, 6 + 1, decimal_format, exponent);
+ }
+# else
+ sprintf (p, "%+d", exponent);
+# endif
+ while (*p != '\0')
+ p++;
+ }
+ }
+ }
+ /* The generated string now extends from tmp to p, with the
+ zero padding insertion point being at pad_ptr. */
+ if (has_width && p - tmp < width)
+ {
+ size_t pad = width - (p - tmp);
+ CHAR_T *end = p + pad;
+
+ if (flags & FLAG_LEFT)
+ {
+ /* Pad with spaces on the right. */
+ for (; pad > 0; pad--)
+ *p++ = ' ';
+ }
+ else if ((flags & FLAG_ZERO) && pad_ptr != NULL)
+ {
+ /* Pad with zeroes. */
+ CHAR_T *q = end;
+
+ while (p > pad_ptr)
+ *--q = *--p;
+ for (; pad > 0; pad--)
+ *p++ = '0';
+ }
+ else
+ {
+ /* Pad with spaces on the left. */
+ CHAR_T *q = end;
+
+ while (p > tmp)
+ *--q = *--p;
+ for (; pad > 0; pad--)
+ *p++ = ' ';
+ }
+
+ p = end;
+ }
+
+ {
+ size_t count = p - tmp;
+
+ if (count >= tmp_length)
+ /* tmp_length was incorrectly calculated - fix the
+ code above! */
+ abort ();
+
+ /* Make room for the result. */
+ if (count >= allocated - length)
+ {
+ size_t n = xsum (length, count);
+
+ ENSURE_ALLOCATION (n);
+ }
+
+ /* Append the result. */
+ memcpy (result + length, tmp, count * sizeof (CHAR_T));
+ if (tmp != tmpbuf)
+ free (tmp);
+ length += count;
+ }
+ }
+#endif
else
{
arg_type type = a.arg[dp->arg_index].type;
- char *p;
+ CHAR_T *p;
unsigned int prefix_count;
int prefixes[2];
-#if !HAVE_SNPRINTF
- unsigned int tmp_length;
- char tmpbuf[700];
- char *tmp;
+#if !USE_SNPRINTF
+ size_t tmp_length;
+ CHAR_T tmpbuf[700];
+ CHAR_T *tmp;
/* Allocate a temporary buffer of sufficient size for calling
sprintf. */
{
- unsigned int width;
- unsigned int precision;
+ size_t width;
+ size_t precision;
width = 0;
if (dp->width_start != dp->width_end)
{
- if (dp->width_arg_index >= 0)
+ if (dp->width_arg_index != ARG_NONE)
{
int arg;
if (!(a.arg[dp->width_arg_index].type == TYPE_INT))
abort ();
arg = a.arg[dp->width_arg_index].a.a_int;
- width = (arg < 0 ? -arg : arg);
+ width = (arg < 0 ? (unsigned int) (-arg) : arg);
}
else
{
- const char *digitp = dp->width_start;
+ const CHAR_T *digitp = dp->width_start;
do
- width = width * 10 + (*digitp++ - '0');
+ width = xsum (xtimes (width, 10), *digitp++ - '0');
while (digitp != dp->width_end);
}
}
precision = 6;
if (dp->precision_start != dp->precision_end)
{
- if (dp->precision_arg_index >= 0)
+ if (dp->precision_arg_index != ARG_NONE)
{
int arg;
}
else
{
- const char *digitp = dp->precision_start + 1;
+ const CHAR_T *digitp = dp->precision_start + 1;
precision = 0;
- do
- precision = precision * 10 + (*digitp++ - '0');
- while (digitp != dp->precision_end);
+ while (digitp != dp->precision_end)
+ precision = xsum (xtimes (precision, 10), *digitp++ - '0');
}
}
{
case 'd': case 'i': case 'u':
-# ifdef HAVE_LONG_LONG
+# if HAVE_LONG_LONG_INT
if (type == TYPE_LONGLONGINT || type == TYPE_ULONGLONGINT)
tmp_length =
(unsigned int) (sizeof (unsigned long long) * CHAR_BIT
* 0.30103 /* binary -> decimal */
- * 2 /* estimate for FLAG_GROUP */
)
- + 1 /* turn floor into ceil */
- + 1; /* account for leading sign */
+ + 1; /* turn floor into ceil */
else
# endif
if (type == TYPE_LONGINT || type == TYPE_ULONGINT)
tmp_length =
(unsigned int) (sizeof (unsigned long) * CHAR_BIT
* 0.30103 /* binary -> decimal */
- * 2 /* estimate for FLAG_GROUP */
)
- + 1 /* turn floor into ceil */
- + 1; /* account for leading sign */
+ + 1; /* turn floor into ceil */
else
tmp_length =
(unsigned int) (sizeof (unsigned int) * CHAR_BIT
* 0.30103 /* binary -> decimal */
- * 2 /* estimate for FLAG_GROUP */
)
- + 1 /* turn floor into ceil */
- + 1; /* account for leading sign */
+ + 1; /* turn floor into ceil */
+ if (tmp_length < precision)
+ tmp_length = precision;
+ /* Multiply by 2, as an estimate for FLAG_GROUP. */
+ tmp_length = xsum (tmp_length, tmp_length);
+ /* Add 1, to account for a leading sign. */
+ tmp_length = xsum (tmp_length, 1);
break;
case 'o':
-# ifdef HAVE_LONG_LONG
+# if HAVE_LONG_LONG_INT
if (type == TYPE_LONGLONGINT || type == TYPE_ULONGLONGINT)
tmp_length =
(unsigned int) (sizeof (unsigned long long) * CHAR_BIT
* 0.333334 /* binary -> octal */
)
- + 1 /* turn floor into ceil */
- + 1; /* account for leading sign */
+ + 1; /* turn floor into ceil */
else
# endif
if (type == TYPE_LONGINT || type == TYPE_ULONGINT)
(unsigned int) (sizeof (unsigned long) * CHAR_BIT
* 0.333334 /* binary -> octal */
)
- + 1 /* turn floor into ceil */
- + 1; /* account for leading sign */
+ + 1; /* turn floor into ceil */
else
tmp_length =
(unsigned int) (sizeof (unsigned int) * CHAR_BIT
* 0.333334 /* binary -> octal */
)
- + 1 /* turn floor into ceil */
- + 1; /* account for leading sign */
+ + 1; /* turn floor into ceil */
+ if (tmp_length < precision)
+ tmp_length = precision;
+ /* Add 1, to account for a leading sign. */
+ tmp_length = xsum (tmp_length, 1);
break;
case 'x': case 'X':
-# ifdef HAVE_LONG_LONG
+# if HAVE_LONG_LONG_INT
if (type == TYPE_LONGLONGINT || type == TYPE_ULONGLONGINT)
tmp_length =
(unsigned int) (sizeof (unsigned long long) * CHAR_BIT
* 0.25 /* binary -> hexadecimal */
)
- + 1 /* turn floor into ceil */
- + 2; /* account for leading sign or alternate form */
+ + 1; /* turn floor into ceil */
else
# endif
if (type == TYPE_LONGINT || type == TYPE_ULONGINT)
(unsigned int) (sizeof (unsigned long) * CHAR_BIT
* 0.25 /* binary -> hexadecimal */
)
- + 1 /* turn floor into ceil */
- + 2; /* account for leading sign or alternate form */
+ + 1; /* turn floor into ceil */
else
tmp_length =
(unsigned int) (sizeof (unsigned int) * CHAR_BIT
* 0.25 /* binary -> hexadecimal */
)
- + 1 /* turn floor into ceil */
- + 2; /* account for leading sign or alternate form */
+ + 1; /* turn floor into ceil */
+ if (tmp_length < precision)
+ tmp_length = precision;
+ /* Add 2, to account for a leading sign or alternate form. */
+ tmp_length = xsum (tmp_length, 2);
break;
case 'f': case 'F':
-# ifdef HAVE_LONG_DOUBLE
+# if HAVE_LONG_DOUBLE
if (type == TYPE_LONGDOUBLE)
tmp_length =
(unsigned int) (LDBL_MAX_EXP
* 2 /* estimate for FLAG_GROUP */
)
+ 1 /* turn floor into ceil */
- + precision
+ 10; /* sign, decimal point etc. */
else
# endif
* 2 /* estimate for FLAG_GROUP */
)
+ 1 /* turn floor into ceil */
- + precision
+ 10; /* sign, decimal point etc. */
+ tmp_length = xsum (tmp_length, precision);
break;
case 'e': case 'E': case 'g': case 'G':
- case 'a': case 'A':
tmp_length =
- precision
- + 12; /* sign, decimal point, exponent etc. */
+ 12; /* sign, decimal point, exponent etc. */
+ tmp_length = xsum (tmp_length, precision);
+ break;
+
+ case 'a': case 'A':
+# if HAVE_LONG_DOUBLE
+ if (type == TYPE_LONGDOUBLE)
+ tmp_length =
+ (unsigned int) (LDBL_DIG
+ * 0.831 /* decimal -> hexadecimal */
+ )
+ + 1; /* turn floor into ceil */
+ else
+# endif
+ tmp_length =
+ (unsigned int) (DBL_DIG
+ * 0.831 /* decimal -> hexadecimal */
+ )
+ + 1; /* turn floor into ceil */
+ if (tmp_length < precision)
+ tmp_length = precision;
+ /* Account for sign, decimal point etc. */
+ tmp_length = xsum (tmp_length, 12);
break;
case 'c':
-# ifdef HAVE_WINT_T
+# if HAVE_WINT_T && !WIDE_CHAR_VERSION
if (type == TYPE_WIDE_CHAR)
tmp_length = MB_CUR_MAX;
else
break;
case 's':
-# ifdef HAVE_WCHAR_T
+# if HAVE_WCHAR_T
if (type == TYPE_WIDE_STRING)
- tmp_length =
- wcslen (a.arg[dp->arg_index].a.a_wide_string)
- * MB_CUR_MAX;
+ {
+ tmp_length =
+ local_wcslen (a.arg[dp->arg_index].a.a_wide_string);
+
+# if !WIDE_CHAR_VERSION
+ tmp_length = xtimes (tmp_length, MB_CUR_MAX);
+# endif
+ }
else
# endif
tmp_length = strlen (a.arg[dp->arg_index].a.a_string);
if (tmp_length < width)
tmp_length = width;
- tmp_length++; /* account for trailing NUL */
+ tmp_length = xsum (tmp_length, 1); /* account for trailing NUL */
}
- if (tmp_length <= sizeof (tmpbuf))
+ if (tmp_length <= sizeof (tmpbuf) / sizeof (CHAR_T))
tmp = tmpbuf;
else
{
- tmp = (char *) malloc (tmp_length);
+ size_t tmp_memsize = xtimes (tmp_length, sizeof (CHAR_T));
+
+ if (size_overflow_p (tmp_memsize))
+ /* Overflow, would lead to out of memory. */
+ goto out_of_memory;
+ tmp = (CHAR_T *) malloc (tmp_memsize);
if (tmp == NULL)
- {
- /* Out of memory. */
- if (!(result == resultbuf || result == NULL))
- free (result);
- freea (buf);
- CLEANUP ();
- errno = ENOMEM;
- return NULL;
- }
+ /* Out of memory. */
+ goto out_of_memory;
}
#endif
if (dp->width_start != dp->width_end)
{
size_t n = dp->width_end - dp->width_start;
- memcpy (p, dp->width_start, n);
+ memcpy (p, dp->width_start, n * sizeof (CHAR_T));
p += n;
}
if (dp->precision_start != dp->precision_end)
{
size_t n = dp->precision_end - dp->precision_start;
- memcpy (p, dp->precision_start, n);
+ memcpy (p, dp->precision_start, n * sizeof (CHAR_T));
p += n;
}
switch (type)
{
-#ifdef HAVE_LONG_LONG
+#if HAVE_LONG_LONG_INT
case TYPE_LONGLONGINT:
case TYPE_ULONGLONGINT:
*p++ = 'l';
#endif
case TYPE_LONGINT:
case TYPE_ULONGINT:
-#ifdef HAVE_WINT_T
+#if HAVE_WINT_T
case TYPE_WIDE_CHAR:
#endif
-#ifdef HAVE_WCHAR_T
+#if HAVE_WCHAR_T
case TYPE_WIDE_STRING:
#endif
*p++ = 'l';
break;
-#ifdef HAVE_LONG_DOUBLE
+#if HAVE_LONG_DOUBLE
case TYPE_LONGDOUBLE:
*p++ = 'L';
break;
break;
}
*p = dp->conversion;
-#if HAVE_SNPRINTF
+#if USE_SNPRINTF
p[1] = '%';
p[2] = 'n';
p[3] = '\0';
/* Construct the arguments for calling snprintf or sprintf. */
prefix_count = 0;
- if (dp->width_arg_index >= 0)
+ if (dp->width_arg_index != ARG_NONE)
{
if (!(a.arg[dp->width_arg_index].type == TYPE_INT))
abort ();
prefixes[prefix_count++] = a.arg[dp->width_arg_index].a.a_int;
}
- if (dp->precision_arg_index >= 0)
+ if (dp->precision_arg_index != ARG_NONE)
{
if (!(a.arg[dp->precision_arg_index].type == TYPE_INT))
abort ();
prefixes[prefix_count++] = a.arg[dp->precision_arg_index].a.a_int;
}
-#if HAVE_SNPRINTF
+#if USE_SNPRINTF
/* Prepare checking whether snprintf returns the count
via %n. */
- ENSURE_ALLOCATION (length + 1);
+ ENSURE_ALLOCATION (xsum (length, 1));
result[length] = '\0';
#endif
count = -1;
retcount = 0;
-#if HAVE_SNPRINTF
+#if USE_SNPRINTF
# define SNPRINTF_BUF(arg) \
switch (prefix_count) \
{ \
case 0: \
- retcount = snprintf (result + length, maxlen, buf, \
+ retcount = SNPRINTF (result + length, maxlen, buf, \
arg, &count); \
break; \
case 1: \
- retcount = snprintf (result + length, maxlen, buf, \
+ retcount = SNPRINTF (result + length, maxlen, buf, \
prefixes[0], arg, &count); \
break; \
case 2: \
- retcount = snprintf (result + length, maxlen, buf, \
+ retcount = SNPRINTF (result + length, maxlen, buf, \
prefixes[0], prefixes[1], arg, \
&count); \
break; \
SNPRINTF_BUF (arg);
}
break;
-#ifdef HAVE_LONG_LONG
+#if HAVE_LONG_LONG_INT
case TYPE_LONGLONGINT:
{
long long int arg = a.arg[dp->arg_index].a.a_longlongint;
SNPRINTF_BUF (arg);
}
break;
-#ifdef HAVE_LONG_DOUBLE
+#if HAVE_LONG_DOUBLE
case TYPE_LONGDOUBLE:
{
long double arg = a.arg[dp->arg_index].a.a_longdouble;
SNPRINTF_BUF (arg);
}
break;
-#ifdef HAVE_WINT_T
+#if HAVE_WINT_T
case TYPE_WIDE_CHAR:
{
wint_t arg = a.arg[dp->arg_index].a.a_wide_char;
SNPRINTF_BUF (arg);
}
break;
-#ifdef HAVE_WCHAR_T
+#if HAVE_WCHAR_T
case TYPE_WIDE_STRING:
{
const wchar_t *arg = a.arg[dp->arg_index].a.a_wide_string;
abort ();
}
-#if HAVE_SNPRINTF
+#if USE_SNPRINTF
/* Portability: Not all implementations of snprintf()
are ISO C 99 compliant. Determine the number of
bytes that snprintf() has produced or would have
p[1] = '\0';
continue;
}
- count = retcount;
+ else
+ {
+ /* Look at the snprintf() return value. */
+ if (retcount < 0)
+ {
+ /* HP-UX 10.20 snprintf() is doubly deficient:
+ It doesn't understand the '%n' directive,
+ *and* it returns -1 (rather than the length
+ that would have been required) when the
+ buffer is too small. */
+ size_t bigger_need =
+ xsum (xtimes (allocated, 2), 12);
+ ENSURE_ALLOCATION (bigger_need);
+ continue;
+ }
+ else
+ count = retcount;
+ }
}
#endif
{
if (!(result == resultbuf || result == NULL))
free (result);
- freea (buf);
+ if (buf_malloced != NULL)
+ free (buf_malloced);
CLEANUP ();
errno = EINVAL;
return NULL;
}
-#if !HAVE_SNPRINTF
+#if !USE_SNPRINTF
if (count >= tmp_length)
/* tmp_length was incorrectly calculated - fix the
code above! */
/* Need at least count bytes. But allocate
proportionally, to avoid looping eternally if
snprintf() reports a too small count. */
- size_t n = length + count;
-
- if (n < 2 * allocated)
- n = 2 * allocated;
+ size_t n =
+ xmax (xsum (length, count), xtimes (allocated, 2));
ENSURE_ALLOCATION (n);
-#if HAVE_SNPRINTF
+#if USE_SNPRINTF
continue;
#endif
}
-#if HAVE_SNPRINTF
+#if USE_SNPRINTF
/* The snprintf() result did fit. */
#else
/* Append the sprintf() result. */
- memcpy (result + length, tmp, count);
+ memcpy (result + length, tmp, count * sizeof (CHAR_T));
if (tmp != tmpbuf)
free (tmp);
#endif
}
/* Add the final NUL. */
- ENSURE_ALLOCATION (length + 1);
+ ENSURE_ALLOCATION (xsum (length, 1));
result[length] = '\0';
if (result != resultbuf && length + 1 < allocated)
{
/* Shrink the allocated memory if possible. */
- char *memory;
+ CHAR_T *memory;
- memory = (char *) realloc (result, length + 1);
+ memory = (CHAR_T *) realloc (result, (length + 1) * sizeof (CHAR_T));
if (memory != NULL)
result = memory;
}
- freea (buf);
+ if (buf_malloced != NULL)
+ free (buf_malloced);
CLEANUP ();
*lengthp = length;
+ /* Note that we can produce a big string of a length > INT_MAX. POSIX
+ says that snprintf() fails with errno = EOVERFLOW in this case, but
+ that's only because snprintf() returns an 'int'. This function does
+ not have this limitation. */
return result;
+
+ out_of_memory:
+ if (!(result == resultbuf || result == NULL))
+ free (result);
+ if (buf_malloced != NULL)
+ free (buf_malloced);
+ out_of_memory_1:
+ CLEANUP ();
+ errno = ENOMEM;
+ return NULL;
}
}
+
+#undef SNPRINTF
+#undef USE_SNPRINTF
+#undef PRINTF_PARSE
+#undef DIRECTIVES
+#undef DIRECTIVE
+#undef CHAR_T
+#undef VASNPRINTF
projects / gnulib.git / blobdiff