| Current Path : /usr/share/gettext/intl/ |
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| Current File : //usr/share/gettext/intl/printf.c |
/* Formatted output to strings, using POSIX/XSI format strings with positions.
Copyright (C) 2003, 2006-2007, 2009-2011, 2015-2016 Free Software
Foundation, Inc.
Written by Bruno Haible <bruno@clisp.org>, 2003.
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/>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#ifdef __GNUC__
# define alloca __builtin_alloca
# define HAVE_ALLOCA 1
#else
# ifdef _MSC_VER
# include <malloc.h>
# define alloca _alloca
# else
# if defined HAVE_ALLOCA_H || defined _LIBC
# include <alloca.h>
# else
# ifdef _AIX
#pragma alloca
# else
# ifndef alloca
char *alloca ();
# endif
# endif
# endif
# endif
#endif
#include <stdio.h>
#if !HAVE_POSIX_PRINTF
#include <errno.h>
#include <limits.h>
#include <stdlib.h>
#include <string.h>
/* Some systems, like OSF/1 4.0 and Woe32, don't have EOVERFLOW. */
#ifndef EOVERFLOW
# define EOVERFLOW E2BIG
#endif
/* When building a DLL, we must export some functions. Note that because
the functions are only defined for binary backward compatibility, we
don't need to use __declspec(dllimport) in any case. */
#if HAVE_VISIBILITY && BUILDING_DLL
# define DLL_EXPORTED __attribute__((__visibility__("default")))
#elif defined _MSC_VER && BUILDING_DLL
# define DLL_EXPORTED __declspec(dllexport)
#else
# define DLL_EXPORTED
#endif
#define STATIC static
/* This needs to be consistent with libgnuintl.in.h. */
#if defined __NetBSD__ || defined __BEOS__ || defined __CYGWIN__ || defined __MINGW32__
/* Don't break __attribute__((format(printf,M,N))).
This redefinition is only possible because the libc in NetBSD, Cygwin,
mingw does not have a function __printf__. */
# define libintl_printf __printf__
#endif
/* Define auxiliary functions declared in "printf-args.h". */
#include "printf-args.c"
/* Define auxiliary functions declared in "printf-parse.h". */
#include "printf-parse.c"
/* Define functions declared in "vasnprintf.h". */
#define vasnprintf libintl_vasnprintf
#include "vasnprintf.c"
#if 0 /* not needed */
#define asnprintf libintl_asnprintf
#include "asnprintf.c"
#endif
DLL_EXPORTED
int
libintl_vfprintf (FILE *stream, const char *format, va_list args)
{
if (strchr (format, '$') == NULL)
return vfprintf (stream, format, args);
else
{
size_t length;
char *result = libintl_vasnprintf (NULL, &length, format, args);
int retval = -1;
if (result != NULL)
{
size_t written = fwrite (result, 1, length, stream);
free (result);
if (written == length)
{
if (length > INT_MAX)
errno = EOVERFLOW;
else
retval = length;
}
}
return retval;
}
}
DLL_EXPORTED
int
libintl_fprintf (FILE *stream, const char *format, ...)
{
va_list args;
int retval;
va_start (args, format);
retval = libintl_vfprintf (stream, format, args);
va_end (args);
return retval;
}
DLL_EXPORTED
int
libintl_vprintf (const char *format, va_list args)
{
return libintl_vfprintf (stdout, format, args);
}
DLL_EXPORTED
int
libintl_printf (const char *format, ...)
{
va_list args;
int retval;
va_start (args, format);
retval = libintl_vprintf (format, args);
va_end (args);
return retval;
}
DLL_EXPORTED
int
libintl_vsprintf (char *resultbuf, const char *format, va_list args)
{
if (strchr (format, '$') == NULL)
return vsprintf (resultbuf, format, args);
else
{
size_t length = (size_t) ~0 / (4 * sizeof (char));
char *result = libintl_vasnprintf (resultbuf, &length, format, args);
if (result != resultbuf)
{
free (result);
return -1;
}
if (length > INT_MAX)
{
errno = EOVERFLOW;
return -1;
}
else
return length;
}
}
DLL_EXPORTED
int
libintl_sprintf (char *resultbuf, const char *format, ...)
{
va_list args;
int retval;
va_start (args, format);
retval = libintl_vsprintf (resultbuf, format, args);
va_end (args);
return retval;
}
#if HAVE_SNPRINTF
# if HAVE_DECL__SNPRINTF
/* Windows. The mingw function vsnprintf() has fewer bugs than the MSVCRT
function _vsnprintf(), so prefer that. */
# if defined __MINGW32__
# define system_vsnprintf vsnprintf
# else
# define system_vsnprintf _vsnprintf
# endif
# else
/* Unix. */
# define system_vsnprintf vsnprintf
# endif
DLL_EXPORTED
int
libintl_vsnprintf (char *resultbuf, size_t length, const char *format, va_list args)
{
if (strchr (format, '$') == NULL)
return system_vsnprintf (resultbuf, length, format, args);
else
{
size_t maxlength = length;
char *result = libintl_vasnprintf (resultbuf, &length, format, args);
if (result == NULL)
return -1;
if (result != resultbuf)
{
if (maxlength > 0)
{
size_t pruned_length =
(length < maxlength ? length : maxlength - 1);
memcpy (resultbuf, result, pruned_length);
resultbuf[pruned_length] = '\0';
}
free (result);
}
if (length > INT_MAX)
{
errno = EOVERFLOW;
return -1;
}
else
return length;
}
}
DLL_EXPORTED
int
libintl_snprintf (char *resultbuf, size_t length, const char *format, ...)
{
va_list args;
int retval;
va_start (args, format);
retval = libintl_vsnprintf (resultbuf, length, format, args);
va_end (args);
return retval;
}
#endif
#if HAVE_ASPRINTF
DLL_EXPORTED
int
libintl_vasprintf (char **resultp, const char *format, va_list args)
{
size_t length;
char *result = libintl_vasnprintf (NULL, &length, format, args);
if (result == NULL)
return -1;
if (length > INT_MAX)
{
free (result);
errno = EOVERFLOW;
return -1;
}
*resultp = result;
return length;
}
DLL_EXPORTED
int
libintl_asprintf (char **resultp, const char *format, ...)
{
va_list args;
int retval;
va_start (args, format);
retval = libintl_vasprintf (resultp, format, args);
va_end (args);
return retval;
}
#endif
#if HAVE_FWPRINTF
#include <wchar.h>
#define WIDE_CHAR_VERSION 1
#include "wprintf-parse.h"
/* Define auxiliary functions declared in "wprintf-parse.h". */
#define CHAR_T wchar_t
#define DIRECTIVE wchar_t_directive
#define DIRECTIVES wchar_t_directives
#define PRINTF_PARSE wprintf_parse
#include "printf-parse.c"
/* Define functions declared in "vasnprintf.h". */
#define vasnwprintf libintl_vasnwprintf
#include "vasnprintf.c"
#if 0 /* not needed */
#define asnwprintf libintl_asnwprintf
#include "asnprintf.c"
#endif
# if HAVE_DECL__SNWPRINTF
/* Windows. The function vswprintf() has a different signature than
on Unix; we use the function _vsnwprintf() instead. */
# define system_vswprintf _vsnwprintf
# else
/* Unix. */
# define system_vswprintf vswprintf
# endif
DLL_EXPORTED
int
libintl_vfwprintf (FILE *stream, const wchar_t *format, va_list args)
{
if (wcschr (format, '$') == NULL)
return vfwprintf (stream, format, args);
else
{
size_t length;
wchar_t *result = libintl_vasnwprintf (NULL, &length, format, args);
int retval = -1;
if (result != NULL)
{
size_t i;
for (i = 0; i < length; i++)
if (fputwc (result[i], stream) == WEOF)
break;
free (result);
if (i == length)
{
if (length > INT_MAX)
errno = EOVERFLOW;
else
retval = length;
}
}
return retval;
}
}
DLL_EXPORTED
int
libintl_fwprintf (FILE *stream, const wchar_t *format, ...)
{
va_list args;
int retval;
va_start (args, format);
retval = libintl_vfwprintf (stream, format, args);
va_end (args);
return retval;
}
DLL_EXPORTED
int
libintl_vwprintf (const wchar_t *format, va_list args)
{
return libintl_vfwprintf (stdout, format, args);
}
DLL_EXPORTED
int
libintl_wprintf (const wchar_t *format, ...)
{
va_list args;
int retval;
va_start (args, format);
retval = libintl_vwprintf (format, args);
va_end (args);
return retval;
}
DLL_EXPORTED
int
libintl_vswprintf (wchar_t *resultbuf, size_t length, const wchar_t *format, va_list args)
{
if (wcschr (format, '$') == NULL)
return system_vswprintf (resultbuf, length, format, args);
else
{
size_t maxlength = length;
wchar_t *result = libintl_vasnwprintf (resultbuf, &length, format, args);
if (result == NULL)
return -1;
if (result != resultbuf)
{
if (maxlength > 0)
{
size_t pruned_length =
(length < maxlength ? length : maxlength - 1);
memcpy (resultbuf, result, pruned_length * sizeof (wchar_t));
resultbuf[pruned_length] = 0;
}
free (result);
/* Unlike vsnprintf, which has to return the number of character that
would have been produced if the resultbuf had been sufficiently
large, the vswprintf function has to return a negative value if
the resultbuf was not sufficiently large. */
if (length >= maxlength)
return -1;
}
if (length > INT_MAX)
{
errno = EOVERFLOW;
return -1;
}
else
return length;
}
}
DLL_EXPORTED
int
libintl_swprintf (wchar_t *resultbuf, size_t length, const wchar_t *format, ...)
{
va_list args;
int retval;
va_start (args, format);
retval = libintl_vswprintf (resultbuf, length, format, args);
va_end (args);
return retval;
}
#endif
#endif