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zoff99 |
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/* vsprintf with automatic memory allocation.
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Copyright (C) 1999, 2002-2003 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU Library General Public License as published
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by the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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USA. */
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/* Tell glibc's <stdio.h> to provide a prototype for snprintf().
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This must come before <config.h> because <config.h> may include
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<features.h>, and once <features.h> has been included, it's too late. */
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#ifndef _GNU_SOURCE
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# define _GNU_SOURCE 1
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#endif
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#ifndef IN_LIBINTL
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# include <alloca.h>
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#endif
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/* Specification. */
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#if WIDE_CHAR_VERSION
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# include "vasnwprintf.h"
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#else
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# include "vasnprintf.h"
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#endif
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#include <stdio.h> /* snprintf(), sprintf() */
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#include <stdlib.h> /* abort(), malloc(), realloc(), free() */
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#include <string.h> /* memcpy(), strlen() */
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#include <errno.h> /* errno */
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#include <limits.h> /* CHAR_BIT */
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#include <float.h> /* DBL_MAX_EXP, LDBL_MAX_EXP */
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#if WIDE_CHAR_VERSION
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# include "wprintf-parse.h"
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#else
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# include "printf-parse.h"
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#endif
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/* Checked size_t computations. */
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#include "xsize.h"
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#ifdef HAVE_WCHAR_T
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# ifdef HAVE_WCSLEN
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# define local_wcslen wcslen
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# else
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/* Solaris 2.5.1 has wcslen() in a separate library libw.so. To avoid
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a dependency towards this library, here is a local substitute.
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Define this substitute only once, even if this file is included
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twice in the same compilation unit. */
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# ifndef local_wcslen_defined
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# define local_wcslen_defined 1
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static size_t
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local_wcslen (const wchar_t *s)
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{
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const wchar_t *ptr;
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for (ptr = s; *ptr != (wchar_t) 0; ptr++)
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;
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return ptr - s;
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}
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# endif
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# endif
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#endif
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#if WIDE_CHAR_VERSION
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# define VASNPRINTF vasnwprintf
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# define CHAR_T wchar_t
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# define DIRECTIVE wchar_t_directive
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# define DIRECTIVES wchar_t_directives
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# define PRINTF_PARSE wprintf_parse
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# define USE_SNPRINTF 1
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# if HAVE_DECL__SNWPRINTF
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/* On Windows, the function swprintf() has a different signature than
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on Unix; we use the _snwprintf() function instead. */
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# define SNPRINTF _snwprintf
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# else
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/* Unix. */
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# define SNPRINTF swprintf
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# endif
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#else
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# define VASNPRINTF vasnprintf
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# define CHAR_T char
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# define DIRECTIVE char_directive
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# define DIRECTIVES char_directives
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# define PRINTF_PARSE printf_parse
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# define USE_SNPRINTF (HAVE_DECL__SNPRINTF || HAVE_SNPRINTF)
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# if HAVE_DECL__SNPRINTF
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/* Windows. */
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# define SNPRINTF _snprintf
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# else
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/* Unix. */
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# define SNPRINTF snprintf
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# endif
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#endif
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CHAR_T *
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VASNPRINTF (CHAR_T *resultbuf, size_t *lengthp, const CHAR_T *format, va_list args)
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{
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DIRECTIVES d;
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arguments a;
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if (PRINTF_PARSE (format, &d, &a) < 0)
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{
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errno = EINVAL;
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return NULL;
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}
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#define CLEANUP() \
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free (d.dir); \
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if (a.arg) \
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free (a.arg);
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if (printf_fetchargs (args, &a) < 0)
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{
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CLEANUP ();
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errno = EINVAL;
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return NULL;
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}
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{
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size_t buf_neededlength;
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CHAR_T *buf;
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CHAR_T *buf_malloced;
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const CHAR_T *cp;
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size_t i;
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DIRECTIVE *dp;
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/* Output string accumulator. */
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CHAR_T *result;
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size_t allocated;
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size_t length;
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/* Allocate a small buffer that will hold a directive passed to
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sprintf or snprintf. */
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buf_neededlength =
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xsum4 (7, d.max_width_length, d.max_precision_length, 6);
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#if HAVE_ALLOCA
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if (buf_neededlength < 4000 / sizeof (CHAR_T))
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{
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buf = (CHAR_T *) alloca (buf_neededlength * sizeof (CHAR_T));
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buf_malloced = NULL;
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}
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else
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#endif
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{
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size_t buf_memsize = xtimes (buf_neededlength, sizeof (CHAR_T));
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if (size_overflow_p (buf_memsize))
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goto out_of_memory_1;
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buf = (CHAR_T *) malloc (buf_memsize);
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if (buf == NULL)
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goto out_of_memory_1;
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buf_malloced = buf;
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}
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if (resultbuf != NULL)
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{
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result = resultbuf;
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allocated = *lengthp;
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}
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else
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{
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result = NULL;
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allocated = 0;
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}
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length = 0;
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/* Invariants:
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result is either == resultbuf or == NULL or malloc-allocated.
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If length > 0, then result != NULL. */
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/* Ensures that allocated >= needed. Aborts through a jump to
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out_of_memory if needed is SIZE_MAX or otherwise too big. */
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#define ENSURE_ALLOCATION(needed) \
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if ((needed) > allocated) \
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{ \
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size_t memory_size; \
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CHAR_T *memory; \
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\
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allocated = (allocated > 0 ? xtimes (allocated, 2) : 12); \
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if ((needed) > allocated) \
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allocated = (needed); \
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memory_size = xtimes (allocated, sizeof (CHAR_T)); \
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if (size_overflow_p (memory_size)) \
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goto out_of_memory; \
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if (result == resultbuf || result == NULL) \
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memory = (CHAR_T *) malloc (memory_size); \
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else \
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memory = (CHAR_T *) realloc (result, memory_size); \
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if (memory == NULL) \
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goto out_of_memory; \
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if (result == resultbuf && length > 0) \
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memcpy (memory, result, length * sizeof (CHAR_T)); \
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result = memory; \
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}
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for (cp = format, i = 0, dp = &d.dir[0]; ; cp = dp->dir_end, i++, dp++)
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{
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if (cp != dp->dir_start)
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{
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size_t n = dp->dir_start - cp;
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size_t augmented_length = xsum (length, n);
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ENSURE_ALLOCATION (augmented_length);
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memcpy (result + length, cp, n * sizeof (CHAR_T));
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length = augmented_length;
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}
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if (i == d.count)
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break;
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/* Execute a single directive. */
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if (dp->conversion == '%')
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{
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size_t augmented_length;
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if (!(dp->arg_index == ARG_NONE))
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abort ();
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augmented_length = xsum (length, 1);
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ENSURE_ALLOCATION (augmented_length);
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result[length] = '%';
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length = augmented_length;
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}
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else
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{
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if (!(dp->arg_index != ARG_NONE))
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abort ();
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if (dp->conversion == 'n')
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{
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switch (a.arg[dp->arg_index].type)
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{
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case TYPE_COUNT_SCHAR_POINTER:
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*a.arg[dp->arg_index].a.a_count_schar_pointer = length;
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break;
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case TYPE_COUNT_SHORT_POINTER:
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*a.arg[dp->arg_index].a.a_count_short_pointer = length;
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break;
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case TYPE_COUNT_INT_POINTER:
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*a.arg[dp->arg_index].a.a_count_int_pointer = length;
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break;
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case TYPE_COUNT_LONGINT_POINTER:
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*a.arg[dp->arg_index].a.a_count_longint_pointer = length;
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break;
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254 |
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#ifdef HAVE_LONG_LONG
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case TYPE_COUNT_LONGLONGINT_POINTER:
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*a.arg[dp->arg_index].a.a_count_longlongint_pointer = length;
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break;
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#endif
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default:
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260 |
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abort ();
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261 |
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}
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262 |
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}
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263 |
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else
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264 |
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{
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265 |
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arg_type type = a.arg[dp->arg_index].type;
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CHAR_T *p;
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267 |
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unsigned int prefix_count;
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268 |
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int prefixes[2];
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#if !USE_SNPRINTF
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size_t tmp_length;
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CHAR_T tmpbuf[700];
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272 |
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CHAR_T *tmp;
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273 |
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274 |
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/* Allocate a temporary buffer of sufficient size for calling
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275 |
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sprintf. */
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276 |
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{
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277 |
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size_t width;
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278 |
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size_t precision;
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279 |
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280 |
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width = 0;
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281 |
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if (dp->width_start != dp->width_end)
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282 |
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{
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283 |
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if (dp->width_arg_index != ARG_NONE)
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284 |
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{
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285 |
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int arg;
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286 |
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|
287 |
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if (!(a.arg[dp->width_arg_index].type == TYPE_INT))
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288 |
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abort ();
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289 |
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arg = a.arg[dp->width_arg_index].a.a_int;
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290 |
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width = (arg < 0 ? (unsigned int) (-arg) : arg);
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291 |
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}
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292 |
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else
|
293 |
|
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{
|
294 |
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const CHAR_T *digitp = dp->width_start;
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295 |
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|
296 |
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do
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297 |
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width = xsum (xtimes (width, 10), *digitp++ - '0');
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298 |
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while (digitp != dp->width_end);
|
299 |
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}
|
300 |
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}
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301 |
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|
302 |
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precision = 6;
|
303 |
|
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if (dp->precision_start != dp->precision_end)
|
304 |
|
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{
|
305 |
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if (dp->precision_arg_index != ARG_NONE)
|
306 |
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{
|
307 |
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int arg;
|
308 |
|
|
|
309 |
|
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if (!(a.arg[dp->precision_arg_index].type == TYPE_INT))
|
310 |
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abort ();
|
311 |
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arg = a.arg[dp->precision_arg_index].a.a_int;
|
312 |
|
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precision = (arg < 0 ? 0 : arg);
|
313 |
|
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}
|
314 |
|
|
else
|
315 |
|
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{
|
316 |
|
|
const CHAR_T *digitp = dp->precision_start + 1;
|
317 |
|
|
|
318 |
|
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precision = 0;
|
319 |
|
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do
|
320 |
|
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precision = xsum (xtimes (precision, 10), *digitp++ - '0');
|
321 |
|
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while (digitp != dp->precision_end);
|
322 |
|
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}
|
323 |
|
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}
|
324 |
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|
325 |
|
|
switch (dp->conversion)
|
326 |
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{
|
327 |
|
|
|
328 |
|
|
case 'd': case 'i': case 'u':
|
329 |
|
|
# ifdef HAVE_LONG_LONG
|
330 |
|
|
if (type == TYPE_LONGLONGINT || type == TYPE_ULONGLONGINT)
|
331 |
|
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tmp_length =
|
332 |
|
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(unsigned int) (sizeof (unsigned long long) * CHAR_BIT
|
333 |
|
|
* 0.30103 /* binary -> decimal */
|
334 |
|
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* 2 /* estimate for FLAG_GROUP */
|
335 |
|
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)
|
336 |
|
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+ 1 /* turn floor into ceil */
|
337 |
|
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+ 1; /* account for leading sign */
|
338 |
|
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else
|
339 |
|
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# endif
|
340 |
|
|
if (type == TYPE_LONGINT || type == TYPE_ULONGINT)
|
341 |
|
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tmp_length =
|
342 |
|
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(unsigned int) (sizeof (unsigned long) * CHAR_BIT
|
343 |
|
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* 0.30103 /* binary -> decimal */
|
344 |
|
|
* 2 /* estimate for FLAG_GROUP */
|
345 |
|
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)
|
346 |
|
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+ 1 /* turn floor into ceil */
|
347 |
|
|
+ 1; /* account for leading sign */
|
348 |
|
|
else
|
349 |
|
|
tmp_length =
|
350 |
|
|
(unsigned int) (sizeof (unsigned int) * CHAR_BIT
|
351 |
|
|
* 0.30103 /* binary -> decimal */
|
352 |
|
|
* 2 /* estimate for FLAG_GROUP */
|
353 |
|
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)
|
354 |
|
|
+ 1 /* turn floor into ceil */
|
355 |
|
|
+ 1; /* account for leading sign */
|
356 |
|
|
break;
|
357 |
|
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|
358 |
|
|
case 'o':
|
359 |
|
|
# ifdef HAVE_LONG_LONG
|
360 |
|
|
if (type == TYPE_LONGLONGINT || type == TYPE_ULONGLONGINT)
|
361 |
|
|
tmp_length =
|
362 |
|
|
(unsigned int) (sizeof (unsigned long long) * CHAR_BIT
|
363 |
|
|
* 0.333334 /* binary -> octal */
|
364 |
|
|
)
|
365 |
|
|
+ 1 /* turn floor into ceil */
|
366 |
|
|
+ 1; /* account for leading sign */
|
367 |
|
|
else
|
368 |
|
|
# endif
|
369 |
|
|
if (type == TYPE_LONGINT || type == TYPE_ULONGINT)
|
370 |
|
|
tmp_length =
|
371 |
|
|
(unsigned int) (sizeof (unsigned long) * CHAR_BIT
|
372 |
|
|
* 0.333334 /* binary -> octal */
|
373 |
|
|
)
|
374 |
|
|
+ 1 /* turn floor into ceil */
|
375 |
|
|
+ 1; /* account for leading sign */
|
376 |
|
|
else
|
377 |
|
|
tmp_length =
|
378 |
|
|
(unsigned int) (sizeof (unsigned int) * CHAR_BIT
|
379 |
|
|
* 0.333334 /* binary -> octal */
|
380 |
|
|
)
|
381 |
|
|
+ 1 /* turn floor into ceil */
|
382 |
|
|
+ 1; /* account for leading sign */
|
383 |
|
|
break;
|
384 |
|
|
|
385 |
|
|
case 'x': case 'X':
|
386 |
|
|
# ifdef HAVE_LONG_LONG
|
387 |
|
|
if (type == TYPE_LONGLONGINT || type == TYPE_ULONGLONGINT)
|
388 |
|
|
tmp_length =
|
389 |
|
|
(unsigned int) (sizeof (unsigned long long) * CHAR_BIT
|
390 |
|
|
* 0.25 /* binary -> hexadecimal */
|
391 |
|
|
)
|
392 |
|
|
+ 1 /* turn floor into ceil */
|
393 |
|
|
+ 2; /* account for leading sign or alternate form */
|
394 |
|
|
else
|
395 |
|
|
# endif
|
396 |
|
|
if (type == TYPE_LONGINT || type == TYPE_ULONGINT)
|
397 |
|
|
tmp_length =
|
398 |
|
|
(unsigned int) (sizeof (unsigned long) * CHAR_BIT
|
399 |
|
|
* 0.25 /* binary -> hexadecimal */
|
400 |
|
|
)
|
401 |
|
|
+ 1 /* turn floor into ceil */
|
402 |
|
|
+ 2; /* account for leading sign or alternate form */
|
403 |
|
|
else
|
404 |
|
|
tmp_length =
|
405 |
|
|
(unsigned int) (sizeof (unsigned int) * CHAR_BIT
|
406 |
|
|
* 0.25 /* binary -> hexadecimal */
|
407 |
|
|
)
|
408 |
|
|
+ 1 /* turn floor into ceil */
|
409 |
|
|
+ 2; /* account for leading sign or alternate form */
|
410 |
|
|
break;
|
411 |
|
|
|
412 |
|
|
case 'f': case 'F':
|
413 |
|
|
# ifdef HAVE_LONG_DOUBLE
|
414 |
|
|
if (type == TYPE_LONGDOUBLE)
|
415 |
|
|
tmp_length =
|
416 |
|
|
(unsigned int) (LDBL_MAX_EXP
|
417 |
|
|
* 0.30103 /* binary -> decimal */
|
418 |
|
|
* 2 /* estimate for FLAG_GROUP */
|
419 |
|
|
)
|
420 |
|
|
+ 1 /* turn floor into ceil */
|
421 |
|
|
+ 10; /* sign, decimal point etc. */
|
422 |
|
|
else
|
423 |
|
|
# endif
|
424 |
|
|
tmp_length =
|
425 |
|
|
(unsigned int) (DBL_MAX_EXP
|
426 |
|
|
* 0.30103 /* binary -> decimal */
|
427 |
|
|
* 2 /* estimate for FLAG_GROUP */
|
428 |
|
|
)
|
429 |
|
|
+ 1 /* turn floor into ceil */
|
430 |
|
|
+ 10; /* sign, decimal point etc. */
|
431 |
|
|
tmp_length = xsum (tmp_length, precision);
|
432 |
|
|
break;
|
433 |
|
|
|
434 |
|
|
case 'e': case 'E': case 'g': case 'G':
|
435 |
|
|
case 'a': case 'A':
|
436 |
|
|
tmp_length =
|
437 |
|
|
12; /* sign, decimal point, exponent etc. */
|
438 |
|
|
tmp_length = xsum (tmp_length, precision);
|
439 |
|
|
break;
|
440 |
|
|
|
441 |
|
|
case 'c':
|
442 |
|
|
# if defined HAVE_WINT_T && !WIDE_CHAR_VERSION
|
443 |
|
|
if (type == TYPE_WIDE_CHAR)
|
444 |
|
|
tmp_length = MB_CUR_MAX;
|
445 |
|
|
else
|
446 |
|
|
# endif
|
447 |
|
|
tmp_length = 1;
|
448 |
|
|
break;
|
449 |
|
|
|
450 |
|
|
case 's':
|
451 |
|
|
# ifdef HAVE_WCHAR_T
|
452 |
|
|
if (type == TYPE_WIDE_STRING)
|
453 |
|
|
{
|
454 |
|
|
tmp_length =
|
455 |
|
|
local_wcslen (a.arg[dp->arg_index].a.a_wide_string);
|
456 |
|
|
|
457 |
|
|
# if !WIDE_CHAR_VERSION
|
458 |
|
|
tmp_length = xtimes (tmp_length, MB_CUR_MAX);
|
459 |
|
|
# endif
|
460 |
|
|
}
|
461 |
|
|
else
|
462 |
|
|
# endif
|
463 |
|
|
tmp_length = strlen (a.arg[dp->arg_index].a.a_string);
|
464 |
|
|
break;
|
465 |
|
|
|
466 |
|
|
case 'p':
|
467 |
|
|
tmp_length =
|
468 |
|
|
(unsigned int) (sizeof (void *) * CHAR_BIT
|
469 |
|
|
* 0.25 /* binary -> hexadecimal */
|
470 |
|
|
)
|
471 |
|
|
+ 1 /* turn floor into ceil */
|
472 |
|
|
+ 2; /* account for leading 0x */
|
473 |
|
|
break;
|
474 |
|
|
|
475 |
|
|
default:
|
476 |
|
|
abort ();
|
477 |
|
|
}
|
478 |
|
|
|
479 |
|
|
if (tmp_length < width)
|
480 |
|
|
tmp_length = width;
|
481 |
|
|
|
482 |
|
|
tmp_length = xsum (tmp_length, 1); /* account for trailing NUL */
|
483 |
|
|
}
|
484 |
|
|
|
485 |
|
|
if (tmp_length <= sizeof (tmpbuf) / sizeof (CHAR_T))
|
486 |
|
|
tmp = tmpbuf;
|
487 |
|
|
else
|
488 |
|
|
{
|
489 |
|
|
size_t tmp_memsize = xtimes (tmp_length, sizeof (CHAR_T));
|
490 |
|
|
|
491 |
|
|
if (size_overflow_p (tmp_memsize))
|
492 |
|
|
/* Overflow, would lead to out of memory. */
|
493 |
|
|
goto out_of_memory;
|
494 |
|
|
tmp = (CHAR_T *) malloc (tmp_memsize);
|
495 |
|
|
if (tmp == NULL)
|
496 |
|
|
/* Out of memory. */
|
497 |
|
|
goto out_of_memory;
|
498 |
|
|
}
|
499 |
|
|
#endif
|
500 |
|
|
|
501 |
|
|
/* Construct the format string for calling snprintf or
|
502 |
|
|
sprintf. */
|
503 |
|
|
p = buf;
|
504 |
|
|
*p++ = '%';
|
505 |
|
|
if (dp->flags & FLAG_GROUP)
|
506 |
|
|
*p++ = '\'';
|
507 |
|
|
if (dp->flags & FLAG_LEFT)
|
508 |
|
|
*p++ = '-';
|
509 |
|
|
if (dp->flags & FLAG_SHOWSIGN)
|
510 |
|
|
*p++ = '+';
|
511 |
|
|
if (dp->flags & FLAG_SPACE)
|
512 |
|
|
*p++ = ' ';
|
513 |
|
|
if (dp->flags & FLAG_ALT)
|
514 |
|
|
*p++ = '#';
|
515 |
|
|
if (dp->flags & FLAG_ZERO)
|
516 |
|
|
*p++ = '0';
|
517 |
|
|
if (dp->width_start != dp->width_end)
|
518 |
|
|
{
|
519 |
|
|
size_t n = dp->width_end - dp->width_start;
|
520 |
|
|
memcpy (p, dp->width_start, n * sizeof (CHAR_T));
|
521 |
|
|
p += n;
|
522 |
|
|
}
|
523 |
|
|
if (dp->precision_start != dp->precision_end)
|
524 |
|
|
{
|
525 |
|
|
size_t n = dp->precision_end - dp->precision_start;
|
526 |
|
|
memcpy (p, dp->precision_start, n * sizeof (CHAR_T));
|
527 |
|
|
p += n;
|
528 |
|
|
}
|
529 |
|
|
|
530 |
|
|
switch (type)
|
531 |
|
|
{
|
532 |
|
|
#ifdef HAVE_LONG_LONG
|
533 |
|
|
case TYPE_LONGLONGINT:
|
534 |
|
|
case TYPE_ULONGLONGINT:
|
535 |
|
|
*p++ = 'l';
|
536 |
|
|
/*FALLTHROUGH*/
|
537 |
|
|
#endif
|
538 |
|
|
case TYPE_LONGINT:
|
539 |
|
|
case TYPE_ULONGINT:
|
540 |
|
|
#ifdef HAVE_WINT_T
|
541 |
|
|
case TYPE_WIDE_CHAR:
|
542 |
|
|
#endif
|
543 |
|
|
#ifdef HAVE_WCHAR_T
|
544 |
|
|
case TYPE_WIDE_STRING:
|
545 |
|
|
#endif
|
546 |
|
|
*p++ = 'l';
|
547 |
|
|
break;
|
548 |
|
|
#ifdef HAVE_LONG_DOUBLE
|
549 |
|
|
case TYPE_LONGDOUBLE:
|
550 |
|
|
*p++ = 'L';
|
551 |
|
|
break;
|
552 |
|
|
#endif
|
553 |
|
|
default:
|
554 |
|
|
break;
|
555 |
|
|
}
|
556 |
|
|
*p = dp->conversion;
|
557 |
|
|
#if USE_SNPRINTF
|
558 |
|
|
p[1] = '%';
|
559 |
|
|
p[2] = 'n';
|
560 |
|
|
p[3] = '\0';
|
561 |
|
|
#else
|
562 |
|
|
p[1] = '\0';
|
563 |
|
|
#endif
|
564 |
|
|
|
565 |
|
|
/* Construct the arguments for calling snprintf or sprintf. */
|
566 |
|
|
prefix_count = 0;
|
567 |
|
|
if (dp->width_arg_index != ARG_NONE)
|
568 |
|
|
{
|
569 |
|
|
if (!(a.arg[dp->width_arg_index].type == TYPE_INT))
|
570 |
|
|
abort ();
|
571 |
|
|
prefixes[prefix_count++] = a.arg[dp->width_arg_index].a.a_int;
|
572 |
|
|
}
|
573 |
|
|
if (dp->precision_arg_index != ARG_NONE)
|
574 |
|
|
{
|
575 |
|
|
if (!(a.arg[dp->precision_arg_index].type == TYPE_INT))
|
576 |
|
|
abort ();
|
577 |
|
|
prefixes[prefix_count++] = a.arg[dp->precision_arg_index].a.a_int;
|
578 |
|
|
}
|
579 |
|
|
|
580 |
|
|
#if USE_SNPRINTF
|
581 |
|
|
/* Prepare checking whether snprintf returns the count
|
582 |
|
|
via %n. */
|
583 |
|
|
ENSURE_ALLOCATION (xsum (length, 1));
|
584 |
|
|
result[length] = '\0';
|
585 |
|
|
#endif
|
586 |
|
|
|
587 |
|
|
for (;;)
|
588 |
|
|
{
|
589 |
|
|
size_t maxlen;
|
590 |
|
|
int count;
|
591 |
|
|
int retcount;
|
592 |
|
|
|
593 |
|
|
maxlen = allocated - length;
|
594 |
|
|
count = -1;
|
595 |
|
|
retcount = 0;
|
596 |
|
|
|
597 |
|
|
#if USE_SNPRINTF
|
598 |
|
|
# define SNPRINTF_BUF(arg) \
|
599 |
|
|
switch (prefix_count) \
|
600 |
|
|
{ \
|
601 |
|
|
case 0: \
|
602 |
|
|
retcount = SNPRINTF (result + length, maxlen, buf, \
|
603 |
|
|
arg, &count); \
|
604 |
|
|
break; \
|
605 |
|
|
case 1: \
|
606 |
|
|
retcount = SNPRINTF (result + length, maxlen, buf, \
|
607 |
|
|
prefixes[0], arg, &count); \
|
608 |
|
|
break; \
|
609 |
|
|
case 2: \
|
610 |
|
|
retcount = SNPRINTF (result + length, maxlen, buf, \
|
611 |
|
|
prefixes[0], prefixes[1], arg, \
|
612 |
|
|
&count); \
|
613 |
|
|
break; \
|
614 |
|
|
default: \
|
615 |
|
|
abort (); \
|
616 |
|
|
}
|
617 |
|
|
#else
|
618 |
|
|
# define SNPRINTF_BUF(arg) \
|
619 |
|
|
switch (prefix_count) \
|
620 |
|
|
{ \
|
621 |
|
|
case 0: \
|
622 |
|
|
count = sprintf (tmp, buf, arg); \
|
623 |
|
|
break; \
|
624 |
|
|
case 1: \
|
625 |
|
|
count = sprintf (tmp, buf, prefixes[0], arg); \
|
626 |
|
|
break; \
|
627 |
|
|
case 2: \
|
628 |
|
|
count = sprintf (tmp, buf, prefixes[0], prefixes[1],\
|
629 |
|
|
arg); \
|
630 |
|
|
break; \
|
631 |
|
|
default: \
|
632 |
|
|
abort (); \
|
633 |
|
|
}
|
634 |
|
|
#endif
|
635 |
|
|
|
636 |
|
|
switch (type)
|
637 |
|
|
{
|
638 |
|
|
case TYPE_SCHAR:
|
639 |
|
|
{
|
640 |
|
|
int arg = a.arg[dp->arg_index].a.a_schar;
|
641 |
|
|
SNPRINTF_BUF (arg);
|
642 |
|
|
}
|
643 |
|
|
break;
|
644 |
|
|
case TYPE_UCHAR:
|
645 |
|
|
{
|
646 |
|
|
unsigned int arg = a.arg[dp->arg_index].a.a_uchar;
|
647 |
|
|
SNPRINTF_BUF (arg);
|
648 |
|
|
}
|
649 |
|
|
break;
|
650 |
|
|
case TYPE_SHORT:
|
651 |
|
|
{
|
652 |
|
|
int arg = a.arg[dp->arg_index].a.a_short;
|
653 |
|
|
SNPRINTF_BUF (arg);
|
654 |
|
|
}
|
655 |
|
|
break;
|
656 |
|
|
case TYPE_USHORT:
|
657 |
|
|
{
|
658 |
|
|
unsigned int arg = a.arg[dp->arg_index].a.a_ushort;
|
659 |
|
|
SNPRINTF_BUF (arg);
|
660 |
|
|
}
|
661 |
|
|
break;
|
662 |
|
|
case TYPE_INT:
|
663 |
|
|
{
|
664 |
|
|
int arg = a.arg[dp->arg_index].a.a_int;
|
665 |
|
|
SNPRINTF_BUF (arg);
|
666 |
|
|
}
|
667 |
|
|
break;
|
668 |
|
|
case TYPE_UINT:
|
669 |
|
|
{
|
670 |
|
|
unsigned int arg = a.arg[dp->arg_index].a.a_uint;
|
671 |
|
|
SNPRINTF_BUF (arg);
|
672 |
|
|
}
|
673 |
|
|
break;
|
674 |
|
|
case TYPE_LONGINT:
|
675 |
|
|
{
|
676 |
|
|
long int arg = a.arg[dp->arg_index].a.a_longint;
|
677 |
|
|
SNPRINTF_BUF (arg);
|
678 |
|
|
}
|
679 |
|
|
break;
|
680 |
|
|
case TYPE_ULONGINT:
|
681 |
|
|
{
|
682 |
|
|
unsigned long int arg = a.arg[dp->arg_index].a.a_ulongint;
|
683 |
|
|
SNPRINTF_BUF (arg);
|
684 |
|
|
}
|
685 |
|
|
break;
|
686 |
|
|
#ifdef HAVE_LONG_LONG
|
687 |
|
|
case TYPE_LONGLONGINT:
|
688 |
|
|
{
|
689 |
|
|
long long int arg = a.arg[dp->arg_index].a.a_longlongint;
|
690 |
|
|
SNPRINTF_BUF (arg);
|
691 |
|
|
}
|
692 |
|
|
break;
|
693 |
|
|
case TYPE_ULONGLONGINT:
|
694 |
|
|
{
|
695 |
|
|
unsigned long long int arg = a.arg[dp->arg_index].a.a_ulonglongint;
|
696 |
|
|
SNPRINTF_BUF (arg);
|
697 |
|
|
}
|
698 |
|
|
break;
|
699 |
|
|
#endif
|
700 |
|
|
case TYPE_DOUBLE:
|
701 |
|
|
{
|
702 |
|
|
double arg = a.arg[dp->arg_index].a.a_double;
|
703 |
|
|
SNPRINTF_BUF (arg);
|
704 |
|
|
}
|
705 |
|
|
break;
|
706 |
|
|
#ifdef HAVE_LONG_DOUBLE
|
707 |
|
|
case TYPE_LONGDOUBLE:
|
708 |
|
|
{
|
709 |
|
|
long double arg = a.arg[dp->arg_index].a.a_longdouble;
|
710 |
|
|
SNPRINTF_BUF (arg);
|
711 |
|
|
}
|
712 |
|
|
break;
|
713 |
|
|
#endif
|
714 |
|
|
case TYPE_CHAR:
|
715 |
|
|
{
|
716 |
|
|
int arg = a.arg[dp->arg_index].a.a_char;
|
717 |
|
|
SNPRINTF_BUF (arg);
|
718 |
|
|
}
|
719 |
|
|
break;
|
720 |
|
|
#ifdef HAVE_WINT_T
|
721 |
|
|
case TYPE_WIDE_CHAR:
|
722 |
|
|
{
|
723 |
|
|
wint_t arg = a.arg[dp->arg_index].a.a_wide_char;
|
724 |
|
|
SNPRINTF_BUF (arg);
|
725 |
|
|
}
|
726 |
|
|
break;
|
727 |
|
|
#endif
|
728 |
|
|
case TYPE_STRING:
|
729 |
|
|
{
|
730 |
|
|
const char *arg = a.arg[dp->arg_index].a.a_string;
|
731 |
|
|
SNPRINTF_BUF (arg);
|
732 |
|
|
}
|
733 |
|
|
break;
|
734 |
|
|
#ifdef HAVE_WCHAR_T
|
735 |
|
|
case TYPE_WIDE_STRING:
|
736 |
|
|
{
|
737 |
|
|
const wchar_t *arg = a.arg[dp->arg_index].a.a_wide_string;
|
738 |
|
|
SNPRINTF_BUF (arg);
|
739 |
|
|
}
|
740 |
|
|
break;
|
741 |
|
|
#endif
|
742 |
|
|
case TYPE_POINTER:
|
743 |
|
|
{
|
744 |
|
|
void *arg = a.arg[dp->arg_index].a.a_pointer;
|
745 |
|
|
SNPRINTF_BUF (arg);
|
746 |
|
|
}
|
747 |
|
|
break;
|
748 |
|
|
default:
|
749 |
|
|
abort ();
|
750 |
|
|
}
|
751 |
|
|
|
752 |
|
|
#if USE_SNPRINTF
|
753 |
|
|
/* Portability: Not all implementations of snprintf()
|
754 |
|
|
are ISO C 99 compliant. Determine the number of
|
755 |
|
|
bytes that snprintf() has produced or would have
|
756 |
|
|
produced. */
|
757 |
|
|
if (count >= 0)
|
758 |
|
|
{
|
759 |
|
|
/* Verify that snprintf() has NUL-terminated its
|
760 |
|
|
result. */
|
761 |
|
|
if (count < maxlen && result[length + count] != '\0')
|
762 |
|
|
abort ();
|
763 |
|
|
/* Portability hack. */
|
764 |
|
|
if (retcount > count)
|
765 |
|
|
count = retcount;
|
766 |
|
|
}
|
767 |
|
|
else
|
768 |
|
|
{
|
769 |
|
|
/* snprintf() doesn't understand the '%n'
|
770 |
|
|
directive. */
|
771 |
|
|
if (p[1] != '\0')
|
772 |
|
|
{
|
773 |
|
|
/* Don't use the '%n' directive; instead, look
|
774 |
|
|
at the snprintf() return value. */
|
775 |
|
|
p[1] = '\0';
|
776 |
|
|
continue;
|
777 |
|
|
}
|
778 |
|
|
else
|
779 |
|
|
{
|
780 |
|
|
/* Look at the snprintf() return value. */
|
781 |
|
|
if (retcount < 0)
|
782 |
|
|
{
|
783 |
|
|
/* HP-UX 10.20 snprintf() is doubly deficient:
|
784 |
|
|
It doesn't understand the '%n' directive,
|
785 |
|
|
*and* it returns -1 (rather than the length
|
786 |
|
|
that would have been required) when the
|
787 |
|
|
buffer is too small. */
|
788 |
|
|
size_t bigger_need =
|
789 |
|
|
xsum (xtimes (allocated, 2), 12);
|
790 |
|
|
ENSURE_ALLOCATION (bigger_need);
|
791 |
|
|
continue;
|
792 |
|
|
}
|
793 |
|
|
else
|
794 |
|
|
count = retcount;
|
795 |
|
|
}
|
796 |
|
|
}
|
797 |
|
|
#endif
|
798 |
|
|
|
799 |
|
|
/* Attempt to handle failure. */
|
800 |
|
|
if (count < 0)
|
801 |
|
|
{
|
802 |
|
|
if (!(result == resultbuf || result == NULL))
|
803 |
|
|
free (result);
|
804 |
|
|
if (buf_malloced != NULL)
|
805 |
|
|
free (buf_malloced);
|
806 |
|
|
CLEANUP ();
|
807 |
|
|
errno = EINVAL;
|
808 |
|
|
return NULL;
|
809 |
|
|
}
|
810 |
|
|
|
811 |
|
|
#if !USE_SNPRINTF
|
812 |
|
|
if (count >= tmp_length)
|
813 |
|
|
/* tmp_length was incorrectly calculated - fix the
|
814 |
|
|
code above! */
|
815 |
|
|
abort ();
|
816 |
|
|
#endif
|
817 |
|
|
|
818 |
|
|
/* Make room for the result. */
|
819 |
|
|
if (count >= maxlen)
|
820 |
|
|
{
|
821 |
|
|
/* Need at least count bytes. But allocate
|
822 |
|
|
proportionally, to avoid looping eternally if
|
823 |
|
|
snprintf() reports a too small count. */
|
824 |
|
|
size_t n =
|
825 |
|
|
xmax (xsum (length, count), xtimes (allocated, 2));
|
826 |
|
|
|
827 |
|
|
ENSURE_ALLOCATION (n);
|
828 |
|
|
#if USE_SNPRINTF
|
829 |
|
|
continue;
|
830 |
|
|
#endif
|
831 |
|
|
}
|
832 |
|
|
|
833 |
|
|
#if USE_SNPRINTF
|
834 |
|
|
/* The snprintf() result did fit. */
|
835 |
|
|
#else
|
836 |
|
|
/* Append the sprintf() result. */
|
837 |
|
|
memcpy (result + length, tmp, count * sizeof (CHAR_T));
|
838 |
|
|
if (tmp != tmpbuf)
|
839 |
|
|
free (tmp);
|
840 |
|
|
#endif
|
841 |
|
|
|
842 |
|
|
length += count;
|
843 |
|
|
break;
|
844 |
|
|
}
|
845 |
|
|
}
|
846 |
|
|
}
|
847 |
|
|
}
|
848 |
|
|
|
849 |
|
|
/* Add the final NUL. */
|
850 |
|
|
ENSURE_ALLOCATION (xsum (length, 1));
|
851 |
|
|
result[length] = '\0';
|
852 |
|
|
|
853 |
|
|
if (result != resultbuf && length + 1 < allocated)
|
854 |
|
|
{
|
855 |
|
|
/* Shrink the allocated memory if possible. */
|
856 |
|
|
CHAR_T *memory;
|
857 |
|
|
|
858 |
|
|
memory = (CHAR_T *) realloc (result, (length + 1) * sizeof (CHAR_T));
|
859 |
|
|
if (memory != NULL)
|
860 |
|
|
result = memory;
|
861 |
|
|
}
|
862 |
|
|
|
863 |
|
|
if (buf_malloced != NULL)
|
864 |
|
|
free (buf_malloced);
|
865 |
|
|
CLEANUP ();
|
866 |
|
|
*lengthp = length;
|
867 |
|
|
return result;
|
868 |
|
|
|
869 |
|
|
out_of_memory:
|
870 |
|
|
if (!(result == resultbuf || result == NULL))
|
871 |
|
|
free (result);
|
872 |
|
|
if (buf_malloced != NULL)
|
873 |
|
|
free (buf_malloced);
|
874 |
|
|
out_of_memory_1:
|
875 |
|
|
CLEANUP ();
|
876 |
|
|
errno = ENOMEM;
|
877 |
|
|
return NULL;
|
878 |
|
|
}
|
879 |
|
|
}
|
880 |
|
|
|
881 |
|
|
#undef SNPRINTF
|
882 |
|
|
#undef USE_SNPRINTF
|
883 |
|
|
#undef PRINTF_PARSE
|
884 |
|
|
#undef DIRECTIVES
|
885 |
|
|
#undef DIRECTIVE
|
886 |
|
|
#undef CHAR_T
|
887 |
|
|
#undef VASNPRINTF
|