mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-27 03:51:15 +08:00
dc6c21dabf
This updates gnulib to a relatively recent commit. Most of this was done by the gnulib import script; the only change I made was to update-gnulib.sh. Tested on x86-64 Fedora 34. I also did a mingw cross build.
412 lines
11 KiB
C
412 lines
11 KiB
C
/* Query the name of the current global locale.
|
|
Copyright (C) 2019-2022 Free Software Foundation, Inc.
|
|
|
|
This file 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 file 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 <https://www.gnu.org/licenses/>. */
|
|
|
|
/* Written by Bruno Haible <bruno@clisp.org>, 2019. */
|
|
|
|
#include <config.h>
|
|
|
|
/* Specification. */
|
|
#include "setlocale_null.h"
|
|
|
|
#include <errno.h>
|
|
#include <locale.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#if defined _WIN32 && !defined __CYGWIN__
|
|
# include <wchar.h>
|
|
#endif
|
|
|
|
#if !(SETLOCALE_NULL_ALL_MTSAFE && SETLOCALE_NULL_ONE_MTSAFE)
|
|
# if defined _WIN32 && !defined __CYGWIN__
|
|
|
|
# define WIN32_LEAN_AND_MEAN /* avoid including junk */
|
|
# include <windows.h>
|
|
|
|
# elif HAVE_PTHREAD_API
|
|
|
|
# include <pthread.h>
|
|
# if HAVE_THREADS_H && HAVE_WEAK_SYMBOLS
|
|
# include <threads.h>
|
|
# pragma weak thrd_exit
|
|
# define c11_threads_in_use() (thrd_exit != NULL)
|
|
# else
|
|
# define c11_threads_in_use() 0
|
|
# endif
|
|
|
|
# elif HAVE_THREADS_H
|
|
|
|
# include <threads.h>
|
|
|
|
# endif
|
|
#endif
|
|
|
|
/* Use the system's setlocale() function, not the gnulib override, here. */
|
|
#undef setlocale
|
|
|
|
static const char *
|
|
setlocale_null_androidfix (int category)
|
|
{
|
|
const char *result = setlocale (category, NULL);
|
|
|
|
#ifdef __ANDROID__
|
|
if (result == NULL)
|
|
switch (category)
|
|
{
|
|
case LC_CTYPE:
|
|
case LC_NUMERIC:
|
|
case LC_TIME:
|
|
case LC_COLLATE:
|
|
case LC_MONETARY:
|
|
case LC_MESSAGES:
|
|
case LC_ALL:
|
|
case LC_PAPER:
|
|
case LC_NAME:
|
|
case LC_ADDRESS:
|
|
case LC_TELEPHONE:
|
|
case LC_MEASUREMENT:
|
|
result = "C";
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
#endif
|
|
|
|
return result;
|
|
}
|
|
|
|
static int
|
|
setlocale_null_unlocked (int category, char *buf, size_t bufsize)
|
|
{
|
|
#if defined _WIN32 && !defined __CYGWIN__ && defined _MSC_VER
|
|
/* On native Windows, nowadays, the setlocale() implementation is based
|
|
on _wsetlocale() and uses malloc() for the result. We are better off
|
|
using _wsetlocale() directly. */
|
|
const wchar_t *result = _wsetlocale (category, NULL);
|
|
|
|
if (result == NULL)
|
|
{
|
|
/* CATEGORY is invalid. */
|
|
if (bufsize > 0)
|
|
/* Return an empty string in BUF.
|
|
This is a convenience for callers that don't want to write explicit
|
|
code for handling EINVAL. */
|
|
buf[0] = '\0';
|
|
return EINVAL;
|
|
}
|
|
else
|
|
{
|
|
size_t length = wcslen (result);
|
|
if (length < bufsize)
|
|
{
|
|
size_t i;
|
|
|
|
/* Convert wchar_t[] -> char[], assuming plain ASCII. */
|
|
for (i = 0; i <= length; i++)
|
|
buf[i] = result[i];
|
|
|
|
return 0;
|
|
}
|
|
else
|
|
{
|
|
if (bufsize > 0)
|
|
{
|
|
/* Return a truncated result in BUF.
|
|
This is a convenience for callers that don't want to write
|
|
explicit code for handling ERANGE. */
|
|
size_t i;
|
|
|
|
/* Convert wchar_t[] -> char[], assuming plain ASCII. */
|
|
for (i = 0; i < bufsize; i++)
|
|
buf[i] = result[i];
|
|
buf[bufsize - 1] = '\0';
|
|
}
|
|
return ERANGE;
|
|
}
|
|
}
|
|
#else
|
|
const char *result = setlocale_null_androidfix (category);
|
|
|
|
if (result == NULL)
|
|
{
|
|
/* CATEGORY is invalid. */
|
|
if (bufsize > 0)
|
|
/* Return an empty string in BUF.
|
|
This is a convenience for callers that don't want to write explicit
|
|
code for handling EINVAL. */
|
|
buf[0] = '\0';
|
|
return EINVAL;
|
|
}
|
|
else
|
|
{
|
|
size_t length = strlen (result);
|
|
if (length < bufsize)
|
|
{
|
|
memcpy (buf, result, length + 1);
|
|
return 0;
|
|
}
|
|
else
|
|
{
|
|
if (bufsize > 0)
|
|
{
|
|
/* Return a truncated result in BUF.
|
|
This is a convenience for callers that don't want to write
|
|
explicit code for handling ERANGE. */
|
|
memcpy (buf, result, bufsize - 1);
|
|
buf[bufsize - 1] = '\0';
|
|
}
|
|
return ERANGE;
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
#if !(SETLOCALE_NULL_ALL_MTSAFE && SETLOCALE_NULL_ONE_MTSAFE) /* musl libc, macOS, FreeBSD, NetBSD, OpenBSD, AIX, Haiku, Cygwin */
|
|
|
|
/* Use a lock, so that no two threads can invoke setlocale_null_unlocked
|
|
at the same time. */
|
|
|
|
/* Prohibit renaming this symbol. */
|
|
# undef gl_get_setlocale_null_lock
|
|
|
|
# if defined _WIN32 && !defined __CYGWIN__
|
|
|
|
extern __declspec(dllimport) CRITICAL_SECTION *gl_get_setlocale_null_lock (void);
|
|
|
|
static int
|
|
setlocale_null_with_lock (int category, char *buf, size_t bufsize)
|
|
{
|
|
CRITICAL_SECTION *lock = gl_get_setlocale_null_lock ();
|
|
int ret;
|
|
|
|
EnterCriticalSection (lock);
|
|
ret = setlocale_null_unlocked (category, buf, bufsize);
|
|
LeaveCriticalSection (lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
# elif HAVE_PTHREAD_API /* musl libc, macOS, FreeBSD, NetBSD, OpenBSD, AIX, Haiku, Cygwin */
|
|
|
|
extern
|
|
# if defined _WIN32 || defined __CYGWIN__
|
|
__declspec(dllimport)
|
|
# endif
|
|
pthread_mutex_t *gl_get_setlocale_null_lock (void);
|
|
|
|
# if HAVE_WEAK_SYMBOLS /* musl libc, FreeBSD, NetBSD, OpenBSD, Haiku */
|
|
|
|
/* Avoid the need to link with '-lpthread'. */
|
|
# pragma weak pthread_mutex_lock
|
|
# pragma weak pthread_mutex_unlock
|
|
|
|
/* Determine whether libpthread is in use. */
|
|
# pragma weak pthread_mutexattr_gettype
|
|
/* See the comments in lock.h. */
|
|
# define pthread_in_use() \
|
|
(pthread_mutexattr_gettype != NULL || c11_threads_in_use ())
|
|
|
|
# else
|
|
# define pthread_in_use() 1
|
|
# endif
|
|
|
|
static int
|
|
setlocale_null_with_lock (int category, char *buf, size_t bufsize)
|
|
{
|
|
if (pthread_in_use())
|
|
{
|
|
pthread_mutex_t *lock = gl_get_setlocale_null_lock ();
|
|
int ret;
|
|
|
|
if (pthread_mutex_lock (lock))
|
|
abort ();
|
|
ret = setlocale_null_unlocked (category, buf, bufsize);
|
|
if (pthread_mutex_unlock (lock))
|
|
abort ();
|
|
|
|
return ret;
|
|
}
|
|
else
|
|
return setlocale_null_unlocked (category, buf, bufsize);
|
|
}
|
|
|
|
# elif HAVE_THREADS_H
|
|
|
|
extern mtx_t *gl_get_setlocale_null_lock (void);
|
|
|
|
static int
|
|
setlocale_null_with_lock (int category, char *buf, size_t bufsize)
|
|
{
|
|
mtx_t *lock = gl_get_setlocale_null_lock ();
|
|
int ret;
|
|
|
|
if (mtx_lock (lock) != thrd_success)
|
|
abort ();
|
|
ret = setlocale_null_unlocked (category, buf, bufsize);
|
|
if (mtx_unlock (lock) != thrd_success)
|
|
abort ();
|
|
|
|
return ret;
|
|
}
|
|
|
|
# endif
|
|
|
|
#endif
|
|
|
|
int
|
|
setlocale_null_r (int category, char *buf, size_t bufsize)
|
|
{
|
|
#if SETLOCALE_NULL_ALL_MTSAFE
|
|
# if SETLOCALE_NULL_ONE_MTSAFE
|
|
|
|
return setlocale_null_unlocked (category, buf, bufsize);
|
|
|
|
# else
|
|
|
|
if (category == LC_ALL)
|
|
return setlocale_null_unlocked (category, buf, bufsize);
|
|
else
|
|
return setlocale_null_with_lock (category, buf, bufsize);
|
|
|
|
# endif
|
|
#else
|
|
# if SETLOCALE_NULL_ONE_MTSAFE
|
|
|
|
if (category == LC_ALL)
|
|
return setlocale_null_with_lock (category, buf, bufsize);
|
|
else
|
|
return setlocale_null_unlocked (category, buf, bufsize);
|
|
|
|
# else
|
|
|
|
return setlocale_null_with_lock (category, buf, bufsize);
|
|
|
|
# endif
|
|
#endif
|
|
}
|
|
|
|
const char *
|
|
setlocale_null (int category)
|
|
{
|
|
#if SETLOCALE_NULL_ALL_MTSAFE && SETLOCALE_NULL_ONE_MTSAFE
|
|
return setlocale_null_androidfix (category);
|
|
#else
|
|
|
|
/* This call must be multithread-safe. To achieve this without using
|
|
thread-local storage:
|
|
1. We use a specific static buffer for each possible CATEGORY
|
|
argument. So that different threads can call setlocale_mtsafe
|
|
with different CATEGORY arguments, without interfering.
|
|
2. We use a simple strcpy or memcpy to fill this static buffer.
|
|
Filling it through, for example, strcpy + strcat would not be
|
|
guaranteed to leave the buffer's contents intact if another thread
|
|
is currently accessing it. If necessary, the contents is first
|
|
assembled in a stack-allocated buffer. */
|
|
if (category == LC_ALL)
|
|
{
|
|
# if SETLOCALE_NULL_ALL_MTSAFE
|
|
return setlocale_null_androidfix (LC_ALL);
|
|
# else
|
|
char buf[SETLOCALE_NULL_ALL_MAX];
|
|
static char resultbuf[SETLOCALE_NULL_ALL_MAX];
|
|
|
|
if (setlocale_null_r (LC_ALL, buf, sizeof (buf)))
|
|
return "C";
|
|
strcpy (resultbuf, buf);
|
|
return resultbuf;
|
|
# endif
|
|
}
|
|
else
|
|
{
|
|
# if SETLOCALE_NULL_ONE_MTSAFE
|
|
return setlocale_null_androidfix (category);
|
|
# else
|
|
enum
|
|
{
|
|
LC_CTYPE_INDEX,
|
|
LC_NUMERIC_INDEX,
|
|
LC_TIME_INDEX,
|
|
LC_COLLATE_INDEX,
|
|
LC_MONETARY_INDEX,
|
|
LC_MESSAGES_INDEX,
|
|
# ifdef LC_PAPER
|
|
LC_PAPER_INDEX,
|
|
# endif
|
|
# ifdef LC_NAME
|
|
LC_NAME_INDEX,
|
|
# endif
|
|
# ifdef LC_ADDRESS
|
|
LC_ADDRESS_INDEX,
|
|
# endif
|
|
# ifdef LC_TELEPHONE
|
|
LC_TELEPHONE_INDEX,
|
|
# endif
|
|
# ifdef LC_MEASUREMENT
|
|
LC_MEASUREMENT_INDEX,
|
|
# endif
|
|
# ifdef LC_IDENTIFICATION
|
|
LC_IDENTIFICATION_INDEX,
|
|
# endif
|
|
LC_INDICES_COUNT
|
|
}
|
|
i;
|
|
char buf[SETLOCALE_NULL_MAX];
|
|
static char resultbuf[LC_INDICES_COUNT][SETLOCALE_NULL_MAX];
|
|
int err;
|
|
|
|
err = setlocale_null_r (category, buf, sizeof (buf));
|
|
if (err == EINVAL)
|
|
return NULL;
|
|
if (err)
|
|
return "C";
|
|
|
|
switch (category)
|
|
{
|
|
case LC_CTYPE: i = LC_CTYPE_INDEX; break;
|
|
case LC_NUMERIC: i = LC_NUMERIC_INDEX; break;
|
|
case LC_TIME: i = LC_TIME_INDEX; break;
|
|
case LC_COLLATE: i = LC_COLLATE_INDEX; break;
|
|
case LC_MONETARY: i = LC_MONETARY_INDEX; break;
|
|
case LC_MESSAGES: i = LC_MESSAGES_INDEX; break;
|
|
# ifdef LC_PAPER
|
|
case LC_PAPER: i = LC_PAPER_INDEX; break;
|
|
# endif
|
|
# ifdef LC_NAME
|
|
case LC_NAME: i = LC_NAME_INDEX; break;
|
|
# endif
|
|
# ifdef LC_ADDRESS
|
|
case LC_ADDRESS: i = LC_ADDRESS_INDEX; break;
|
|
# endif
|
|
# ifdef LC_TELEPHONE
|
|
case LC_TELEPHONE: i = LC_TELEPHONE_INDEX; break;
|
|
# endif
|
|
# ifdef LC_MEASUREMENT
|
|
case LC_MEASUREMENT: i = LC_MEASUREMENT_INDEX; break;
|
|
# endif
|
|
# ifdef LC_IDENTIFICATION
|
|
case LC_IDENTIFICATION: i = LC_IDENTIFICATION_INDEX; break;
|
|
# endif
|
|
default:
|
|
/* If you get here, a #ifdef LC_xxx is missing. */
|
|
abort ();
|
|
}
|
|
|
|
strcpy (resultbuf[i], buf);
|
|
return resultbuf[i];
|
|
# endif
|
|
}
|
|
#endif
|
|
}
|