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2000-01-21  Ulrich Drepper  <drepper@cygnus.com>

	* intl/Makefile (routines): Add dcigettext, dcngettext, dngettxt,
	ngettext, and plural.
	(distribute): Add plural.y, po2test.sed, and tst-gettext.sh.
	(test-srcs): Add tst-gettext.
	(before-compile): Add $(objpfx)msgs.h.
	Add rules for plural.c and msgs.h generation and running tst-gettext.\
	* intl/Versions [GLIBC_2.2]: Add __dcngettext, dcngettext, dngettext,
	and ngettext.
	* intl/dcgettext.c: Move most code into dcigettext.c.  Add call
	dcigettext with appropriate parameters.
	* intl/dcigettext.c: New file.
	* intl/dcngettext.c: New file.
	* intl/dngettext.c: New file.
	* intl/ngettext.c: New file.
	* intl/gettextP.h (struct expression): Define.
	(struct loaded_domain): Add plural and nplurals members.
	Add prototypes for new internal functions.
	* intl/libintl.h: Declare new functions.  Add optimizations for them.
	* intl/loadinfo.h: Add new parameter to _nl_find_msg declaration.
	* intl/loadmsgcat.c (_nl_load_domain): Search for plural information in
	header entry and parse and store the expression.
	* intl/plural.y: New file.
	* intl/po2test.sed: New file.
	* intl/tst-gettext.c: New file.
	* intl/tst-gettext.sh: New file.

	* intl/gettext.c: Call __dcgettext directly.
This commit is contained in:
Ulrich Drepper
2000-01-22 05:50:49 +00:00
parent 0b9fbf003a
commit abbffdf981
19 changed files with 3416 additions and 847 deletions
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835
intl/dcgettext.c
View File

@@ -1,5 +1,5 @@
/* Implementation of the dcgettext(3) function.
Copyright (C) 1995, 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
Copyright (C) 1995-1999, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library. Its master source is NOT part of
the C library, however.
@@ -23,70 +23,6 @@
# include <config.h>
#endif
#include <sys/types.h>
#if defined __GNUC__ && !defined C_ALLOCA
# define alloca __builtin_alloca
# define HAVE_ALLOCA 1
#else
# if (defined HAVE_ALLOCA_H || defined _LIBC) && !defined C_ALLOCA
# include <alloca.h>
# else
# ifdef _AIX
#pragma alloca
# else
# ifndef alloca
char *alloca ();
# endif
# endif
# endif
#endif
#include <errno.h>
#ifndef errno
extern int errno;
#endif
#ifndef __set_errno
# define __set_errno(val) errno = (val)
#endif
#if defined STDC_HEADERS || defined _LIBC
# include <stdlib.h>
#else
char *getenv ();
# ifdef HAVE_MALLOC_H
# include <malloc.h>
# else
void free ();
# endif
#endif
#if defined HAVE_STRING_H || defined _LIBC
# ifndef _GNU_SOURCE
# define _GNU_SOURCE 1
# endif
# include <string.h>
#else
# include <strings.h>
#endif
#if !HAVE_STRCHR && !defined _LIBC
# ifndef strchr
# define strchr index
# endif
#endif
#if defined HAVE_UNISTD_H || defined _LIBC
# include <unistd.h>
#endif
#if defined HAVE_LOCALE_H || defined _LIBC
# include <locale.h>
#endif
#if defined HAVE_SYS_PARAM_H || defined _LIBC
# include <sys/param.h>
#endif
#include "gettext.h"
#include "gettextP.h"
#ifdef _LIBC
@@ -94,225 +30,19 @@ void free ();
#else
# include "libgettext.h"
#endif
#include "hash-string.h"
/* Thread safetyness. */
#ifdef _LIBC
# include <bits/libc-lock.h>
#endif
/* @@ end of prolog @@ */
#ifdef _LIBC
/* Rename the non ANSI C functions. This is required by the standard
because some ANSI C functions will require linking with this object
file and the name space must not be polluted. */
# define getcwd __getcwd
# ifndef stpcpy
# define stpcpy __stpcpy
# endif
#else
# if !defined HAVE_GETCWD
char *getwd ();
# define getcwd(buf, max) getwd (buf)
# else
char *getcwd ();
# endif
# ifndef HAVE_STPCPY
static char *stpcpy PARAMS ((char *dest, const char *src));
# endif
# ifndef HAVE_MEMPCPY
static void *mempcpy PARAMS ((void *dest, const void *src, size_t n));
# endif
#endif
/* Amount to increase buffer size by in each try. */
#define PATH_INCR 32
/* The following is from pathmax.h. */
/* Non-POSIX BSD systems might have gcc's limits.h, which doesn't define
PATH_MAX but might cause redefinition warnings when sys/param.h is
later included (as on MORE/BSD 4.3). */
#if defined _POSIX_VERSION || (defined HAVE_LIMITS_H && !defined __GNUC__)
# include <limits.h>
#endif
#ifndef _POSIX_PATH_MAX
# define _POSIX_PATH_MAX 255
#endif
#if !defined PATH_MAX && defined _PC_PATH_MAX
# define PATH_MAX (pathconf ("/", _PC_PATH_MAX) < 1 ? 1024 : pathconf ("/", _PC_PATH_MAX))
#endif
/* Don't include sys/param.h if it already has been. */
#if defined HAVE_SYS_PARAM_H && !defined PATH_MAX && !defined MAXPATHLEN
# include <sys/param.h>
#endif
#if !defined PATH_MAX && defined MAXPATHLEN
# define PATH_MAX MAXPATHLEN
#endif
#ifndef PATH_MAX
# define PATH_MAX _POSIX_PATH_MAX
#endif
/* XPG3 defines the result of `setlocale (category, NULL)' as:
``Directs `setlocale()' to query `category' and return the current
setting of `local'.''
However it does not specify the exact format. And even worse: POSIX
defines this not at all. So we can use this feature only on selected
system (e.g. those using GNU C Library). */
#ifdef _LIBC
# define HAVE_LOCALE_NULL
#endif
/* We want to allocate a string at the end of the struct. gcc makes
this easy. */
#ifdef __GNUC__
# define ZERO 0
#else
# define ZERO 1
#endif
/* This is the type used for the search tree where known translations
are stored. */
struct known_translation_t
{
/* Domain in which to search. */
char *domain;
/* The category. */
int category;
/* State of the catalog counter at the point the string was found. */
int counter;
/* And finally the translation. */
const char *translation;
/* Pointer to the string in question. */
char msgid[ZERO];
};
/* Root of the search tree with known translations. We can use this
only if the system provides the `tsearch' function family. */
#if defined HAVE_TSEARCH || defined _LIBC
# include <search.h>
static void *root;
# ifdef _LIBC
# define tsearch __tsearch
# endif
/* Function to compare two entries in the table of known translations. */
static int
transcmp (const void *p1, const void *p2)
{
struct known_translation_t *s1 = (struct known_translation_t *) p1;
struct known_translation_t *s2 = (struct known_translation_t *) p2;
int result;
result = strcmp (s1->msgid, s2->msgid);
if (result == 0)
{
result = strcmp (s1->msgid, s2->msgid);
if (result == 0)
/* We compare the category last (though this is the cheapest
operation) since it is hopefully always the same (namely
LC_MESSAGES). */
result = s1->category - s2->category;
}
return result;
}
#endif
/* Name of the default domain used for gettext(3) prior any call to
textdomain(3). The default value for this is "messages". */
const char _nl_default_default_domain[] = "messages";
/* Value used as the default domain for gettext(3). */
const char *_nl_current_default_domain = _nl_default_default_domain;
/* Contains the default location of the message catalogs. */
const char _nl_default_dirname[] = GNULOCALEDIR;
/* List with bindings of specific domains created by bindtextdomain()
calls. */
struct binding *_nl_domain_bindings;
/* Prototypes for local functions. */
static const char *category_to_name PARAMS ((int category)) internal_function;
static const char *guess_category_value PARAMS ((int category,
const char *categoryname))
internal_function;
/* For those loosing systems which don't have `alloca' we have to add
some additional code emulating it. */
#ifdef HAVE_ALLOCA
/* Nothing has to be done. */
# define ADD_BLOCK(list, address) /* nothing */
# define FREE_BLOCKS(list) /* nothing */
#else
struct block_list
{
void *address;
struct block_list *next;
};
# define ADD_BLOCK(list, addr) \
do { \
struct block_list *newp = (struct block_list *) malloc (sizeof (*newp)); \
/* If we cannot get a free block we cannot add the new element to \
the list. */ \
if (newp != NULL) { \
newp->address = (addr); \
newp->next = (list); \
(list) = newp; \
} \
} while (0)
# define FREE_BLOCKS(list) \
do { \
while (list != NULL) { \
struct block_list *old = list; \
list = list->next; \
free (old); \
} \
} while (0)
# undef alloca
# define alloca(size) (malloc (size))
#endif /* have alloca */
/* Names for the libintl functions are a problem. They must not clash
with existing names and they should follow ANSI C. But this source
code is also used in GNU C Library where the names have a __
prefix. So we have to make a difference here. */
#ifdef _LIBC
# define DCGETTEXT __dcgettext
# define DCIGETTEXT __dcigettext
#else
# define DCGETTEXT dcgettext__
#endif
/* Checking whether the binaries runs SUID must be done and glibc provides
easier methods therefore we make a difference here. */
#ifdef _LIBC
# define ENABLE_SECURE __libc_enable_secure
# define DETERMINE_SECURE
#else
static int enable_secure;
# define ENABLE_SECURE (enable_secure == 1)
# define DETERMINE_SECURE \
if (enable_secure == 0) \
{ \
if (getuid () != geteuid () || getgid () != getegid ()) \
enable_secure = 1; \
else \
enable_secure = -1; \
}
# define DCIGETTEXT dcigettext__
#endif
/* Look up MSGID in the DOMAINNAME message catalog for the current CATEGORY
@@ -323,567 +53,10 @@ DCGETTEXT (domainname, msgid, category)
const char *msgid;
int category;
{
#ifndef HAVE_ALLOCA
struct block_list *block_list = NULL;
#endif
struct loaded_l10nfile *domain;
struct binding *binding;
const char *categoryname;
const char *categoryvalue;
char *dirname, *xdomainname;
char *single_locale;
char *retval;
int saved_errno;
#if defined HAVE_TSEARCH || defined _LIBC
struct known_translation_t *search;
struct known_translation_t **foundp;
size_t msgid_len = strlen (msgid) + 1;
#endif
size_t domainname_len;
/* If no real MSGID is given return NULL. */
if (msgid == NULL)
return NULL;
#if defined HAVE_TSEARCH || defined _LIBC
/* Try to find the translation among those which we found at some time. */
search = (struct known_translation_t *) alloca (sizeof (*search)
+ msgid_len);
memcpy (search->msgid, msgid, msgid_len);
search->domain = (char *) domainname;
search->category = category;
foundp = (struct known_translation_t **) tfind (search, &root, transcmp);
if (foundp != NULL && (*foundp)->counter == _nl_msg_cat_cntr)
return (char *) (*foundp)->translation;
#endif
/* Preserve the `errno' value. */
saved_errno = errno;
/* See whether this is a SUID binary or not. */
DETERMINE_SECURE;
/* If DOMAINNAME is NULL, we are interested in the default domain. If
CATEGORY is not LC_MESSAGES this might not make much sense but the
definition left this undefined. */
if (domainname == NULL)
domainname = _nl_current_default_domain;
/* First find matching binding. */
for (binding = _nl_domain_bindings; binding != NULL; binding = binding->next)
{
int compare = strcmp (domainname, binding->domainname);
if (compare == 0)
/* We found it! */
break;
if (compare < 0)
{
/* It is not in the list. */
binding = NULL;
break;
}
}
if (binding == NULL)
dirname = (char *) _nl_default_dirname;
else if (binding->dirname[0] == '/')
dirname = binding->dirname;
else
{
/* We have a relative path. Make it absolute now. */
size_t dirname_len = strlen (binding->dirname) + 1;
size_t path_max;
char *ret;
path_max = (unsigned int) PATH_MAX;
path_max += 2; /* The getcwd docs say to do this. */
dirname = (char *) alloca (path_max + dirname_len);
ADD_BLOCK (block_list, dirname);
__set_errno (0);
while ((ret = getcwd (dirname, path_max)) == NULL && errno == ERANGE)
{
path_max += PATH_INCR;
dirname = (char *) alloca (path_max + dirname_len);
ADD_BLOCK (block_list, dirname);
__set_errno (0);
}
if (ret == NULL)
{
/* We cannot get the current working directory. Don't signal an
error but simply return the default string. */
FREE_BLOCKS (block_list);
__set_errno (saved_errno);
return (char *) msgid;
}
stpcpy (stpcpy (strchr (dirname, '\0'), "/"), binding->dirname);
}
/* Now determine the symbolic name of CATEGORY and its value. */
categoryname = category_to_name (category);
categoryvalue = guess_category_value (category, categoryname);
domainname_len = strlen (domainname);
xdomainname = (char *) alloca (strlen (categoryname)
+ domainname_len + 5);
ADD_BLOCK (block_list, xdomainname);
stpcpy (mempcpy (stpcpy (stpcpy (xdomainname, categoryname), "/"),
domainname, domainname_len),
".mo");
/* Creating working area. */
single_locale = (char *) alloca (strlen (categoryvalue) + 1);
ADD_BLOCK (block_list, single_locale);
/* Search for the given string. This is a loop because we perhaps
got an ordered list of languages to consider for the translation. */
while (1)
{
/* Make CATEGORYVALUE point to the next element of the list. */
while (categoryvalue[0] != '\0' && categoryvalue[0] == ':')
++categoryvalue;
if (categoryvalue[0] == '\0')
{
/* The whole contents of CATEGORYVALUE has been searched but
no valid entry has been found. We solve this situation
by implicitly appending a "C" entry, i.e. no translation
will take place. */
single_locale[0] = 'C';
single_locale[1] = '\0';
}
else
{
char *cp = single_locale;
while (categoryvalue[0] != '\0' && categoryvalue[0] != ':')
*cp++ = *categoryvalue++;
*cp = '\0';
/* When this is a SUID binary we must not allow accessing files
outside the dedicated directories. */
if (ENABLE_SECURE
&& (memchr (single_locale, '/',
_nl_find_language (single_locale) - single_locale)
!= NULL))
/* Ingore this entry. */
continue;
}
/* If the current locale value is C (or POSIX) we don't load a
domain. Return the MSGID. */
if (strcmp (single_locale, "C") == 0
|| strcmp (single_locale, "POSIX") == 0)
{
FREE_BLOCKS (block_list);
__set_errno (saved_errno);
return (char *) msgid;
}
/* Find structure describing the message catalog matching the
DOMAINNAME and CATEGORY. */
domain = _nl_find_domain (dirname, single_locale, xdomainname);
if (domain != NULL)
{
retval = _nl_find_msg (domain, msgid);
if (retval == NULL)
{
int cnt;
for (cnt = 0; domain->successor[cnt] != NULL; ++cnt)
{
retval = _nl_find_msg (domain->successor[cnt], msgid);
if (retval != NULL)
break;
}
}
if (retval != NULL)
{
FREE_BLOCKS (block_list);
__set_errno (saved_errno);
#if defined HAVE_TSEARCH || defined _LIBC
if (foundp == NULL)
{
/* Create a new entry and add it to the search tree. */
struct known_translation_t *newp;
newp = (struct known_translation_t *)
malloc (sizeof (*newp) + msgid_len
+ domainname_len + 1 - ZERO);
if (newp != NULL)
{
newp->domain = mempcpy (newp->msgid, msgid, msgid_len);
memcpy (newp->domain, domainname, domainname_len + 1);
newp->category = category;
newp->counter = _nl_msg_cat_cntr;
newp->translation = retval;
/* Insert the entry in the search tree. */
foundp = (struct known_translation_t **)
tsearch (newp, &root, transcmp);
if (&newp != foundp)
/* The insert failed. */
free (newp);
}
}
else
{
/* We can update the existing entry. */
(*foundp)->counter = _nl_msg_cat_cntr;
(*foundp)->translation = retval;
}
#endif
return retval;
}
}
}
/* NOTREACHED */
return DCIGETTEXT (domainname, msgid, NULL, 0, 0, category);
}
#ifdef _LIBC
/* Alias for function name in GNU C Library. */
weak_alias (__dcgettext, dcgettext);
#endif
char *
internal_function
_nl_find_msg (domain_file, msgid)
struct loaded_l10nfile *domain_file;
const char *msgid;
{
size_t act = 0;
size_t top, bottom;
struct loaded_domain *domain;
if (domain_file->decided == 0)
_nl_load_domain (domain_file);
if (domain_file->data == NULL)
return NULL;
domain = (struct loaded_domain *) domain_file->data;
/* Locate the MSGID and its translation. */
if (domain->hash_size > 2 && domain->hash_tab != NULL)
{
/* Use the hashing table. */
nls_uint32 len = strlen (msgid);
nls_uint32 hash_val = hash_string (msgid);
nls_uint32 idx = hash_val % domain->hash_size;
nls_uint32 incr = 1 + (hash_val % (domain->hash_size - 2));
nls_uint32 nstr = W (domain->must_swap, domain->hash_tab[idx]);
if (nstr == 0)
/* Hash table entry is empty. */
return NULL;
if (W (domain->must_swap, domain->orig_tab[nstr - 1].length) == len
&& strcmp (msgid,
domain->data + W (domain->must_swap,
domain->orig_tab[nstr - 1].offset)) == 0)
{
/* We found an entry. If we have to convert the string to use
a different character set this is the time. */
char *result =
(char *) domain->data + W (domain->must_swap,
domain->trans_tab[nstr - 1].offset);
if (
#ifdef _LIBC
domain->conv != (__gconv_t) -1
#else
# if HAVE_ICONV
domain->conv != (iconv_t) -1
# endif
#endif
)
{
/* We are supposed to do a conversion. First allocate an
appropriate table with the same structure as the hash
table in the file where we can put the pointers to the
converted strings in. */
if (domain->conv_tab == NULL
&& ((domain->conv_tab = (char **) calloc (domain->hash_size,
sizeof (char *)))
== NULL))
/* Mark that we didn't succeed allocating a table. */
domain->conv_tab = (char **) -1;
if (domain->conv_tab == (char **) -1)
/* Nothing we can do, no more memory. */
return NULL;
if (domain->conv_tab[idx] == NULL)
{
/* We haven't used this string so far, so it is not
translated yet. Do this now. */
#ifdef _LIBC
/* For glibc we use a bit more efficient memory handling.
We allocate always larger blocks which get used over
time. This is faster than many small allocations. */
__libc_lock_define_initialized (static, lock)
static unsigned char *freemem;
static size_t freemem_size;
/* Note that we include the NUL byte. */
size_t resultlen = strlen (result) + 1;
const unsigned char *inbuf = result;
unsigned char *outbuf = freemem;
size_t written;
int res;
__libc_lock_lock (lock);
while ((res = __gconv (domain->conv,
&inbuf, inbuf + resultlen,
&outbuf, outbuf + freemem_size,
&written)) == __GCONV_OK)
{
if (res != __GCONV_FULL_OUTPUT)
goto out;
/* We must resize the buffer. */
freemem_size = MAX (2 * freemem_size, 4064);
freemem = (char *) malloc (freemem_size);
if (freemem == NULL)
goto out;
inbuf = result;
outbuf = freemem;
}
/* We have now in our buffer a converted string. Put this
in the hash table */
domain->conv_tab[idx] = freemem;
freemem_size -= outbuf - freemem;
freemem = outbuf;
out:
__libc_lock_unlock (lock);
#endif
}
result = domain->conv_tab[idx];
}
return result;
}
while (1)
{
if (idx >= domain->hash_size - incr)
idx -= domain->hash_size - incr;
else
idx += incr;
nstr = W (domain->must_swap, domain->hash_tab[idx]);
if (nstr == 0)
/* Hash table entry is empty. */
return NULL;
if (W (domain->must_swap, domain->orig_tab[nstr - 1].length) == len
&& (strcmp (msgid,
domain->data + W (domain->must_swap,
domain->orig_tab[nstr - 1].offset))
== 0))
return ((char *) domain->data
+ W (domain->must_swap,
domain->trans_tab[nstr - 1].offset));
}
/* NOTREACHED */
}
/* Now we try the default method: binary search in the sorted
array of messages. */
bottom = 0;
top = domain->nstrings;
while (bottom < top)
{
int cmp_val;
act = (bottom + top) / 2;
cmp_val = strcmp (msgid, (domain->data
+ W (domain->must_swap,
domain->orig_tab[act].offset)));
if (cmp_val < 0)
top = act;
else if (cmp_val > 0)
bottom = act + 1;
else
break;
}
/* If an translation is found return this. */
return bottom >= top ? NULL : ((char *) domain->data
+ W (domain->must_swap,
domain->trans_tab[act].offset));
}
/* Return string representation of locale CATEGORY. */
static const char *
internal_function
category_to_name (category)
int category;
{
const char *retval;
switch (category)
{
#ifdef LC_COLLATE
case LC_COLLATE:
retval = "LC_COLLATE";
break;
#endif
#ifdef LC_CTYPE
case LC_CTYPE:
retval = "LC_CTYPE";
break;
#endif
#ifdef LC_MONETARY
case LC_MONETARY:
retval = "LC_MONETARY";
break;
#endif
#ifdef LC_NUMERIC
case LC_NUMERIC:
retval = "LC_NUMERIC";
break;
#endif
#ifdef LC_TIME
case LC_TIME:
retval = "LC_TIME";
break;
#endif
#ifdef LC_MESSAGES
case LC_MESSAGES:
retval = "LC_MESSAGES";
break;
#endif
#ifdef LC_RESPONSE
case LC_RESPONSE:
retval = "LC_RESPONSE";
break;
#endif
#ifdef LC_ALL
case LC_ALL:
/* This might not make sense but is perhaps better than any other
value. */
retval = "LC_ALL";
break;
#endif
default:
/* If you have a better idea for a default value let me know. */
retval = "LC_XXX";
}
return retval;
}
/* Guess value of current locale from value of the environment variables. */
static const char *
internal_function
guess_category_value (category, categoryname)
int category;
const char *categoryname;
{
const char *retval;
/* The highest priority value is the `LANGUAGE' environment
variable. This is a GNU extension. */
retval = getenv ("LANGUAGE");
if (retval != NULL && retval[0] != '\0')
return retval;
/* `LANGUAGE' is not set. So we have to proceed with the POSIX
methods of looking to `LC_ALL', `LC_xxx', and `LANG'. On some
systems this can be done by the `setlocale' function itself. */
#if defined HAVE_SETLOCALE && defined HAVE_LC_MESSAGES && defined HAVE_LOCALE_NULL
return setlocale (category, NULL);
#else
/* Setting of LC_ALL overwrites all other. */
retval = getenv ("LC_ALL");
if (retval != NULL && retval[0] != '\0')
return retval;
/* Next comes the name of the desired category. */
retval = getenv (categoryname);
if (retval != NULL && retval[0] != '\0')
return retval;
/* Last possibility is the LANG environment variable. */
retval = getenv ("LANG");
if (retval != NULL && retval[0] != '\0')
return retval;
/* We use C as the default domain. POSIX says this is implementation
defined. */
return "C";
#endif
}
/* @@ begin of epilog @@ */
/* We don't want libintl.a to depend on any other library. So we
avoid the non-standard function stpcpy. In GNU C Library this
function is available, though. Also allow the symbol HAVE_STPCPY
to be defined. */
#if !_LIBC && !HAVE_STPCPY
static char *
stpcpy (dest, src)
char *dest;
const char *src;
{
while ((*dest++ = *src++) != '\0')
/* Do nothing. */ ;
return dest - 1;
}
#endif
#if !_LIBC && !HAVE_MEMPCPY
static void *
mempcpy (dest, src, n)
void *dest;
const void *src;
size_t n;
{
return (void *) ((char *) memcpy (dst, src, n) + n);
}
#endif
#ifdef _LIBC
/* If we want to free all resources we have to do some work at
program's end. */
static void __attribute__ ((unused))
free_mem (void)
{
struct binding *runp;
for (runp = _nl_domain_bindings; runp != NULL; runp = runp->next)
{
free (runp->domainname);
if (runp->dirname != _nl_default_dirname)
/* Yes, this is a pointer comparison. */
free (runp->dirname);
}
if (_nl_current_default_domain != _nl_default_default_domain)
/* Yes, again a pointer comparison. */
free ((char *) _nl_current_default_domain);
/* Remove the search tree with the know translations. */
__tdestroy (root, free);
}
text_set_element (__libc_subfreeres, free_mem);
#endif