diff options
Diffstat (limited to 'intl/printf.c')
| -rw-r--r-- | intl/printf.c | 427 |
1 files changed, 427 insertions, 0 deletions
diff --git a/intl/printf.c b/intl/printf.c new file mode 100644 index 00000000..0088e519 --- /dev/null +++ b/intl/printf.c @@ -0,0 +1,427 @@ +/* Formatted output to strings, using POSIX/XSI format strings with positions. + Copyright (C) 2003, 2006-2007 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 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, + USA. */ + +#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 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.h.in. */ +#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. */ +# define system_vsnprintf _vsnprintf +# 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 != 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. */ +# 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 != 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 |