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glibc/intl/dcigettext.c
Ulrich Drepper 6adc15f574 Update. 
* locale/findlocale.c (free_mem): Add cast to avoid warning.
2000-08-27 19:05:19 +00:00

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/* Implementation of the internal dcigettext function.
Copyright (C) 1995-1999, 2000 Free Software Foundation, Inc.
The GNU C Library 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 of the
License, or (at your option) any later version.
The GNU C Library 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 the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* Tell glibc's <string.h> to provide a prototype for mempcpy().
This must come before <config.h> because <config.h> may include
<features.h>, and once <features.h> has been included, it's too late. */
#ifndef _GNU_SOURCE
# define _GNU_SOURCE 1
#endif
#ifdef HAVE_CONFIG_H
# 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 <stddef.h>
# 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
# 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
# include <libintl.h>
#else
# include "libgettext.h"
#endif
#include "hash-string.h"
/* Thread safetyness. */
#ifdef _LIBC
# include <bits/libc-lock.h>
#else
/* Provide dummy implementation if this is outside glibc. */
# define __libc_lock_define_initialized(CLASS, NAME)
# define __libc_lock_lock(NAME)
# define __libc_lock_unlock(NAME)
# define __libc_rwlock_define_initialized(CLASS, NAME)
# define __libc_rwlock_rdlock(NAME)
# define __libc_rwlock_unlock(NAME)
#endif
/* Alignment of types. */
#if defined __GNUC__ && __GNUC__ >= 2
# define alignof(TYPE) __alignof__ (TYPE)
#else
# define alignof(TYPE) \
((int) &((struct { char dummy1; TYPE dummy2; } *) 0)->dummy2)
#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
# define tfind __tfind
#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;
/* Plural index. */
unsigned long int plindex;
/* 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->domain, s2->domain);
if (result == 0)
{
result = s1->plindex - s2->plindex;
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 unsigned long int plural_eval (struct expression *pexp,
unsigned long int n) internal_function;
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 */
/* List of blocks allocated for translations. */
static struct transmem_list
{
struct transmem_list *next;
char data[0];
} *transmem_list;
/* 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 DCIGETTEXT __dcigettext
#else
# define DCIGETTEXT dcigettext__
#endif
/* Lock variable to protect the global data in the gettext implementation. */
__libc_rwlock_define_initialized (, _nl_state_lock)
/* 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; \
}
#endif
/* Look up MSGID in the DOMAINNAME message catalog for the current
CATEGORY locale and, if PLURAL is nonzero, search over string
depending on the plural form determined by N. */
char *
DCIGETTEXT (domainname, msgid1, msgid2, plural, n, category)
const char *domainname;
const char *msgid1;
const char *msgid2;
int plural;
unsigned long int n;
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 = NULL;
size_t msgid_len;
#endif
size_t domainname_len;
/* If no real MSGID is given return NULL. */
if (msgid1 == NULL)
return NULL;
__libc_rwlock_rdlock (_nl_state_lock);
/* 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;
#if defined HAVE_TSEARCH || defined _LIBC
msgid_len = strlen (msgid1) + 1;
if (plural == 0)
{
/* 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, msgid1, msgid_len);
search->domain = (char *) domainname;
search->plindex = 0;
search->category = category;
foundp = (struct known_translation_t **) tfind (search, &root, transcmp);
if (foundp != NULL && (*foundp)->counter == _nl_msg_cat_cntr)
{
__libc_rwlock_unlock (_nl_state_lock);
return (char *) (*foundp)->translation;
}
}
#endif
/* Preserve the `errno' value. */
saved_errno = errno;
/* See whether this is a SUID binary or not. */
DETERMINE_SECURE;
/* 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 (plural == 0
? (char *) msgid1
/* Use the Germanic plural rule. */
: n == 1 ? (char *) msgid1 : (char *) msgid2);
}
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 && strchr (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);
__libc_rwlock_unlock (_nl_state_lock);
__set_errno (saved_errno);
return (plural == 0
? (char *) msgid1
/* Use the Germanic plural rule. */
: n == 1 ? (char *) msgid1 : (char *) msgid2);
}
/* Find structure describing the message catalog matching the
DOMAINNAME and CATEGORY. */
domain = _nl_find_domain (dirname, single_locale, xdomainname, binding);
if (domain != NULL)
{
unsigned long int index = 0;
if (plural != 0)
{
struct loaded_domain *domaindata =
(struct loaded_domain *) domain->data;
index = plural_eval (domaindata->plural, n);
if (index >= domaindata->nplurals)
/* This should never happen. It means the plural expression
and the given maximum value do not match. */
index = 0;
#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, msgid1, msgid_len);
search->domain = (char *) domainname;
search->plindex = index;
search->category = category;
foundp = (struct known_translation_t **) tfind (search, &root,
transcmp);
if (foundp != NULL && (*foundp)->counter == _nl_msg_cat_cntr)
{
__libc_rwlock_unlock (_nl_state_lock);
return (char *) (*foundp)->translation;
}
#endif
}
retval = _nl_find_msg (domain, msgid1, index);
if (retval == NULL)
{
int cnt;
for (cnt = 0; domain->successor[cnt] != NULL; ++cnt)
{
retval = _nl_find_msg (domain->successor[cnt], msgid1,
index);
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, msgid1, msgid_len);
memcpy (newp->domain, domainname, domainname_len + 1);
newp->plindex = index;
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 (foundp == NULL
|| __builtin_expect (*foundp != newp, 0))
/* The insert failed. */
free (newp);
}
}
else
{
/* We can update the existing entry. */
(*foundp)->counter = _nl_msg_cat_cntr;
(*foundp)->translation = retval;
}
#endif
__libc_rwlock_unlock (_nl_state_lock);
return retval;
}
}
}
/* NOTREACHED */
}
char *
internal_function
_nl_find_msg (domain_file, msgid, index)
struct loaded_l10nfile *domain_file;
const char *msgid;
unsigned long int index;
{
struct loaded_domain *domain;
size_t act;
char *result;
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)
{
act = nstr - 1;
goto found;
}
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))
{
act = nstr - 1;
goto found;
}
}
/* NOTREACHED */
}
else
{
/* Try the default method: binary search in the sorted array of
messages. */
size_t top, bottom;
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
goto found;
}
/* No translation was found. */
return NULL;
}
found:
/* The translation was found at index ACT. If we have to convert the
string to use a different character set, this is the time. */
result = ((char *) domain->data
+ W (domain->must_swap, domain->trans_tab[act].offset));
#if defined _LIBC || HAVE_ICONV
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 table
of translations in the file, where we can put the pointers
to the converted strings in.
There is a slight complication with the INDEX: We don't know
a priori which entries are plural entries. Therefore at any
moment we can only translate the variants 0 .. INDEX. */
if (domain->conv_tab == NULL
&& ((domain->conv_tab = (char **) calloc (domain->nstrings,
sizeof (char *)))
== NULL))
/* Mark that we didn't succeed allocating a table. */
domain->conv_tab = (char **) -1;
if (__builtin_expect (domain->conv_tab == (char **) -1, 0))
/* Nothing we can do, no more memory. */
goto converted;
if (domain->conv_tab[act] == NULL
|| *(nls_uint32 *) domain->conv_tab[act] < index)
{
/* We haven't used this string so far, so it is not
translated yet. Do this now. */
/* 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)
#define INITIAL_BLOCK_SIZE 4080
static unsigned char *freemem;
static size_t freemem_size;
size_t resultlen;
const unsigned char *inbuf;
unsigned char *outbuf;
int malloc_count;
/* Note that we translate (index + 1) consecutive strings at
once, including the final NUL byte. */
{
unsigned long int i = index;
char *p = result;
do
p += strlen (p) + 1;
while (i-- > 0);
resultlen = p - result;
}
__libc_lock_lock (lock);
inbuf = result;
outbuf = freemem + sizeof (nls_uint32);
malloc_count = 0;
while (1)
{
# ifdef _LIBC
struct transmem_list *newmem;
size_t non_reversible;
int res;
if (freemem_size < 4)
goto resize_freemem;
res = __gconv (domain->conv,
&inbuf, inbuf + resultlen,
&outbuf,
outbuf + freemem_size - sizeof (nls_uint32),
&non_reversible);
if (res == __GCONV_OK || res == __GCONV_EMPTY_INPUT)
break;
if (res != __GCONV_FULL_OUTPUT)
{
__libc_lock_unlock (lock);
goto converted;
}
inbuf = result;
# else
# if HAVE_ICONV
# define transmem freemem
const char *inptr = (const char *) inbuf;
size_t inleft = resultlen;
char *outptr = (char *) outbuf;
size_t outleft;
if (freemem_size < 4)
goto resize_freemem;
outleft = freemem_size - 4;
if (iconv (domain->conv, &inptr, &inleft, &outptr, &outleft)
!= (size_t) (-1))
{
outbuf = (unsigned char *) outptr;
break;
}
if (errno != E2BIG)
{
__libc_lock_unlock (lock);
goto converted;
}
# else
# define transmem freemem
# endif
# endif
resize_freemem:
/* We must allocate a new buffer of resize the old one. */
if (malloc_count > 0)
{
struct transmem_list *next = transmem_list->next;
++malloc_count;
freemem_size = malloc_count * INITIAL_BLOCK_SIZE;
newmem = (struct transmem_list *) realloc (transmem_list,
freemem_size);
if (newmem != NULL)
transmem_list = next;
}
else
{
malloc_count = 1;
freemem_size = INITIAL_BLOCK_SIZE;
newmem = (struct transmem_list *) malloc (freemem_size);
}
if (__builtin_expect (newmem == NULL, 0))
{
freemem = NULL;
freemem_size = 0;
__libc_lock_unlock (lock);
goto converted;
}
# ifdef _LIBC
/* Add the block to the list of blocks we have to free
at some point. */
newmem->next = transmem_list;
transmem_list = newmem;
freemem = newmem->data;
freemem_size -= offsetof (struct transmem_list, data);
# endif
outbuf = freemem + sizeof (nls_uint32);
}
/* We have now in our buffer a converted string. Put this
into the table of conversions. */
*(nls_uint32 *) freemem = index;
domain->conv_tab[act] = freemem;
/* Shrink freemem, but keep it aligned. */
freemem_size -= outbuf - freemem;
freemem = outbuf;
freemem += freemem_size & (alignof (nls_uint32) - 1);
freemem_size = freemem_size & ~ (alignof (nls_uint32) - 1);
__libc_lock_unlock (lock);
}
/* Now domain->conv_tab[act] contains the translation of at least
the variants 0 .. INDEX. */
result = domain->conv_tab[act] + sizeof (nls_uint32);
}
converted:
/* The result string is converted. */
#endif /* _LIBC || HAVE_ICONV */
/* Now skip some strings. How much depends on the index passed in. */
while (index-- > 0)
{
#ifdef _LIBC
result = __rawmemchr (result, '\0');
#else
result = strchr (result, '\0');
#endif
/* And skip over the NUL byte. */
++result;
}
return result;
}
/* Function to evaluate the plural expression and return an index value. */
static unsigned long int
internal_function
plural_eval (struct expression *pexp, unsigned long int n)
{
switch (pexp->operation)
{
case var:
return n;
case num:
return pexp->val.num;
case mult:
return (plural_eval (pexp->val.args2.left, n)
* plural_eval (pexp->val.args2.right, n));
case divide:
return (plural_eval (pexp->val.args2.left, n)
/ plural_eval (pexp->val.args2.right, n));
case module:
return (plural_eval (pexp->val.args2.left, n)
% plural_eval (pexp->val.args2.right, n));
case plus:
return (plural_eval (pexp->val.args2.left, n)
+ plural_eval (pexp->val.args2.right, n));
case minus:
return (plural_eval (pexp->val.args2.left, n)
- plural_eval (pexp->val.args2.right, n));
case equal:
return (plural_eval (pexp->val.args2.left, n)
== plural_eval (pexp->val.args2.right, n));
case not_equal:
return (plural_eval (pexp->val.args2.left, n)
!= plural_eval (pexp->val.args2.right, n));
case land:
return (plural_eval (pexp->val.args2.left, n)
&& plural_eval (pexp->val.args2.right, n));
case lor:
return (plural_eval (pexp->val.args2.left, n)
|| plural_eval (pexp->val.args2.right, n));
case qmop:
return (plural_eval (pexp->val.args3.bexp, n)
? plural_eval (pexp->val.args3.tbranch, n)
: plural_eval (pexp->val.args3.fbranch, n));
}
/* NOTREACHED */
return 0;
}
/* 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 (dest, 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;
void *old;
for (runp = _nl_domain_bindings; runp != NULL; runp = runp->next)
{
if (runp->dirname != _nl_default_dirname)
/* Yes, this is a pointer comparison. */
free (runp->dirname);
if (runp->codeset != NULL)
free (runp->codeset);
}
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 known translations. */
__tdestroy (root, free);
while (transmem_list != NULL)
{
old = transmem_list;
transmem_list = transmem_list->next;
free (old);
}
}
text_set_element (__libc_subfreeres, free_mem);
#endif
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