565 lines
14 KiB
C
565 lines
14 KiB
C
#include <newlib.h>
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#ifdef _MB_CAPABLE
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/* Load needed message catalogs.
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Copyright (C) 1995-1999, 2000, 2001 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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/* Tell glibc's <string.h> to provide a prototype for mempcpy().
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This must come before <config.h> because <config.h> may include
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<features.h>, and once <features.h> has been included, it's too late. */
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#ifndef _GNU_SOURCE
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# define _GNU_SOURCE 1
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#endif
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <ctype.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#ifdef __GNUC__
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# define alloca __builtin_alloca
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# define HAVE_ALLOCA 1
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#else
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# if defined HAVE_ALLOCA_H || defined _LIBC
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# include <alloca.h>
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# else
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# ifdef _AIX
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#pragma alloca
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# else
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# ifndef alloca
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char *alloca ();
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# endif
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# endif
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# endif
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#endif
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#if defined STDC_HEADERS || defined _LIBC
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# include <stdlib.h>
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#endif
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#if defined HAVE_STRING_H || defined _LIBC
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# include <string.h>
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#else
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# include <strings.h>
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#endif
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#if defined HAVE_UNISTD_H || defined _LIBC
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# include <unistd.h>
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#endif
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#ifdef _LIBC
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# include <langinfo.h>
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# include <locale.h>
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#endif
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#if (defined HAVE_MMAP && defined HAVE_MUNMAP && !defined DISALLOW_MMAP) \
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|| (defined _LIBC && defined _POSIX_MAPPED_FILES)
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# include <sys/mman.h>
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# undef HAVE_MMAP
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# define HAVE_MMAP 1
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#else
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# undef HAVE_MMAP
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#endif
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#include "gettext.h"
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#include "gettextP.h"
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#ifdef _GLIBC
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# include "localeinfo.h"
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#endif
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/* @@ end of prolog @@ */
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#ifdef _LIBC
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/* Rename the non ISO C functions. This is required by the standard
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because some ISO C functions will require linking with this object
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file and the name space must not be polluted. */
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# define open __open
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# define close __close
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# define read __read
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# define mmap __mmap
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# define munmap __munmap
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#endif
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/* Names for the libintl functions are a problem. They must not clash
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with existing names and they should follow ANSI C. But this source
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code is also used in GNU C Library where the names have a __
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prefix. So we have to make a difference here. */
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#ifdef _LIBC
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# define PLURAL_PARSE __gettextparse
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#else
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# define PLURAL_PARSE gettextparse__
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#endif
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/* For those losing systems which don't have `alloca' we have to add
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some additional code emulating it. */
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#ifdef HAVE_ALLOCA
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# define freea(p) /* nothing */
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#else
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# define alloca(n) malloc (n)
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# define freea(p) free (p)
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#endif
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/* We need a sign, whether a new catalog was loaded, which can be associated
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with all translations. This is important if the translations are
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cached by one of GCC's features. */
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int _nl_msg_cat_cntr;
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#if defined __GNUC__ \
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|| (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L)
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/* These structs are the constant expression for the germanic plural
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form determination. It represents the expression "n != 1". */
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static const struct expression plvar =
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{
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.nargs = 0,
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.operation = var,
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};
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static const struct expression plone =
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{
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.nargs = 0,
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.operation = num,
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.val =
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{
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.num = 1
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}
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};
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static struct expression germanic_plural =
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{
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.nargs = 2,
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.operation = not_equal,
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.val =
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{
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.args =
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{
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[0] = (struct expression *) &plvar,
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[1] = (struct expression *) &plone
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}
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}
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};
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# define INIT_GERMANIC_PLURAL()
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#else
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/* For compilers without support for ISO C 99 struct/union initializers:
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Initialization at run-time. */
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static struct expression plvar;
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static struct expression plone;
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static struct expression germanic_plural;
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static void
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init_germanic_plural ()
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{
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if (plone.val.num == 0)
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{
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plvar.nargs = 0;
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plvar.operation = var;
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plone.nargs = 0;
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plone.operation = num;
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plone.val.num = 1;
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germanic_plural.nargs = 2;
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germanic_plural.operation = not_equal;
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germanic_plural.val.args[0] = &plvar;
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germanic_plural.val.args[1] = &plone;
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}
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}
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# define INIT_GERMANIC_PLURAL() init_germanic_plural ()
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#endif
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/* Initialize the codeset dependent parts of an opened message catalog.
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Return the header entry. */
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const char *
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internal_function
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_nl_init_domain_conv (domain_file, domain, domainbinding)
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struct loaded_l10nfile *domain_file;
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struct loaded_domain *domain;
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struct binding *domainbinding;
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{
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/* Find out about the character set the file is encoded with.
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This can be found (in textual form) in the entry "". If this
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entry does not exist or if this does not contain the `charset='
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information, we will assume the charset matches the one the
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current locale and we don't have to perform any conversion. */
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char *nullentry;
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size_t nullentrylen;
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/* Preinitialize fields, to avoid recursion during _nl_find_msg. */
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domain->codeset_cntr =
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(domainbinding != NULL ? domainbinding->codeset_cntr : 0);
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#ifdef _GLIBC
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domain->conv = (__gconv_t) -1;
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#else
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# if HAVE_ICONV
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domain->conv = (iconv_t) -1;
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# endif
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#endif
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domain->conv_tab = NULL;
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/* Get the header entry. */
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nullentry = _nl_find_msg (domain_file, domainbinding, "", &nullentrylen);
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if (nullentry != NULL)
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{
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#if defined _LIBC || HAVE_ICONV
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const char *charsetstr;
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charsetstr = strstr (nullentry, "charset=");
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if (charsetstr != NULL)
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{
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size_t len;
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char *charset;
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const char *outcharset;
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charsetstr += strlen ("charset=");
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len = strcspn (charsetstr, " \t\n");
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charset = (char *) alloca (len + 1);
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# if defined _LIBC || HAVE_MEMPCPY
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*((char *) mempcpy (charset, charsetstr, len)) = '\0';
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# else
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memcpy (charset, charsetstr, len);
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charset[len] = '\0';
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# endif
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/* The output charset should normally be determined by the
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locale. But sometimes the locale is not used or not correctly
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set up, so we provide a possibility for the user to override
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this. Moreover, the value specified through
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bind_textdomain_codeset overrides both. */
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if (domainbinding != NULL && domainbinding->codeset != NULL)
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outcharset = domainbinding->codeset;
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else
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{
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outcharset = getenv ("OUTPUT_CHARSET");
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if (outcharset == NULL || outcharset[0] == '\0')
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{
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# ifdef _GLIBC
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outcharset = (*_nl_current[LC_CTYPE])->values[_NL_ITEM_INDEX (CODESET)].string;
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# else
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# if HAVE_ICONV
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extern const char *__locale_msgcharset (void);
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outcharset = __locale_msgcharset ();
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# endif
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# endif
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}
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}
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# ifdef _GLIBC
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/* We always want to use transliteration. */
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outcharset = norm_add_slashes (outcharset, "TRANSLIT");
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charset = norm_add_slashes (charset, NULL);
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if (__gconv_open (outcharset, charset, &domain->conv,
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GCONV_AVOID_NOCONV)
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!= __GCONV_OK)
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domain->conv = (__gconv_t) -1;
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# else
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# if HAVE_ICONV
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/* When using GNU libiconv, we want to use transliteration. */
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# if _LIBICONV_VERSION
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len = strlen (outcharset);
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{
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char *tmp = (char *) alloca (len + 10 + 1);
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memcpy (tmp, outcharset, len);
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memcpy (tmp + len, "//TRANSLIT", 10 + 1);
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outcharset = tmp;
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}
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# endif
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domain->conv = iconv_open (outcharset, charset);
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# if _LIBICONV_VERSION
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freea (outcharset);
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# endif
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# endif
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# endif
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freea (charset);
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}
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#endif /* _LIBC || HAVE_ICONV */
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}
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return nullentry;
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}
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/* Frees the codeset dependent parts of an opened message catalog. */
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void
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internal_function
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_nl_free_domain_conv (domain)
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struct loaded_domain *domain;
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{
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if (domain->conv_tab != NULL && domain->conv_tab != (char **) -1)
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free (domain->conv_tab);
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#ifdef _GLIBC
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if (domain->conv != (__gconv_t) -1)
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__gconv_close (domain->conv);
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#else
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# if HAVE_ICONV
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if (domain->conv != (iconv_t) -1)
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iconv_close (domain->conv);
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# endif
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#endif
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}
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/* Load the message catalogs specified by FILENAME. If it is no valid
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message catalog do nothing. */
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void
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internal_function
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_nl_load_domain (domain_file, domainbinding)
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struct loaded_l10nfile *domain_file;
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struct binding *domainbinding;
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{
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int fd;
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size_t size;
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#ifdef _LIBC
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struct stat64 st;
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#else
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struct stat st;
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#endif
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struct mo_file_header *data = (struct mo_file_header *) -1;
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int use_mmap = 0;
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struct loaded_domain *domain;
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const char *nullentry;
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domain_file->decided = 1;
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domain_file->data = NULL;
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/* Note that it would be useless to store domainbinding in domain_file
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because domainbinding might be == NULL now but != NULL later (after
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a call to bind_textdomain_codeset). */
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/* If the record does not represent a valid locale the FILENAME
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might be NULL. This can happen when according to the given
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specification the locale file name is different for XPG and CEN
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syntax. */
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if (domain_file->filename == NULL)
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return;
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/* Try to open the addressed file. */
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fd = open (domain_file->filename, O_RDONLY);
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if (fd == -1)
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return;
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/* We must know about the size of the file. */
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if (
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#ifdef _LIBC
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__builtin_expect (fstat64 (fd, &st) != 0, 0)
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#else
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__builtin_expect (fstat (fd, &st) != 0, 0)
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#endif
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|| __builtin_expect ((size = (size_t) st.st_size) != st.st_size, 0)
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|| __builtin_expect (size < sizeof (struct mo_file_header), 0))
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{
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/* Something went wrong. */
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close (fd);
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return;
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}
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#ifdef HAVE_MMAP
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/* Now we are ready to load the file. If mmap() is available we try
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this first. If not available or it failed we try to load it. */
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data = (struct mo_file_header *) mmap (NULL, size, PROT_READ,
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MAP_PRIVATE, fd, 0);
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if (__builtin_expect (data != (struct mo_file_header *) -1, 1))
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{
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/* mmap() call was successful. */
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close (fd);
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use_mmap = 1;
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}
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#endif
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/* If the data is not yet available (i.e. mmap'ed) we try to load
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it manually. */
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if (data == (struct mo_file_header *) -1)
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{
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size_t to_read;
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char *read_ptr;
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data = (struct mo_file_header *) malloc (size);
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if (data == NULL)
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return;
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to_read = size;
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read_ptr = (char *) data;
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do
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{
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long int nb = (long int) read (fd, read_ptr, to_read);
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if (nb <= 0)
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{
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#ifdef EINTR
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if (nb == -1 && errno == EINTR)
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continue;
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#endif
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close (fd);
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return;
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}
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read_ptr += nb;
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to_read -= nb;
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}
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while (to_read > 0);
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close (fd);
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}
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/* Using the magic number we can test whether it really is a message
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catalog file. */
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if (__builtin_expect (data->magic != _MAGIC && data->magic != _MAGIC_SWAPPED,
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0))
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{
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/* The magic number is wrong: not a message catalog file. */
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#ifdef HAVE_MMAP
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if (use_mmap)
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munmap ((caddr_t) data, size);
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else
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#endif
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free (data);
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return;
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}
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domain = (struct loaded_domain *) malloc (sizeof (struct loaded_domain));
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if (domain == NULL)
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return;
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domain_file->data = domain;
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domain->data = (char *) data;
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domain->use_mmap = use_mmap;
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domain->mmap_size = size;
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domain->must_swap = data->magic != _MAGIC;
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/* Fill in the information about the available tables. */
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switch (W (domain->must_swap, data->revision))
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{
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case 0:
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domain->nstrings = W (domain->must_swap, data->nstrings);
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domain->orig_tab = (struct string_desc *)
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((char *) data + W (domain->must_swap, data->orig_tab_offset));
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domain->trans_tab = (struct string_desc *)
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((char *) data + W (domain->must_swap, data->trans_tab_offset));
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domain->hash_size = W (domain->must_swap, data->hash_tab_size);
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domain->hash_tab = (nls_uint32 *)
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((char *) data + W (domain->must_swap, data->hash_tab_offset));
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break;
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default:
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/* This is an invalid revision. */
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#ifdef HAVE_MMAP
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if (use_mmap)
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munmap ((caddr_t) data, size);
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else
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#endif
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free (data);
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free (domain);
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domain_file->data = NULL;
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return;
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}
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/* Now initialize the character set converter from the character set
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the file is encoded with (found in the header entry) to the domain's
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specified character set or the locale's character set. */
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nullentry = _nl_init_domain_conv (domain_file, domain, domainbinding);
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/* Also look for a plural specification. */
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if (nullentry != NULL)
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{
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const char *plural;
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const char *nplurals;
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plural = strstr (nullentry, "plural=");
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nplurals = strstr (nullentry, "nplurals=");
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if (plural == NULL || nplurals == NULL)
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goto no_plural;
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else
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{
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/* First get the number. */
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char *endp;
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unsigned long int n;
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struct parse_args args;
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nplurals += 9;
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while (*nplurals != '\0' && isspace (*nplurals))
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++nplurals;
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#if defined HAVE_STRTOUL || defined _LIBC
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n = strtoul (nplurals, &endp, 10);
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#else
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for (endp = nplurals, n = 0; *endp >= '0' && *endp <= '9'; endp++)
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n = n * 10 + (*endp - '0');
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#endif
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domain->nplurals = n;
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if (nplurals == endp)
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goto no_plural;
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/* Due to the restrictions bison imposes onto the interface of the
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scanner function we have to put the input string and the result
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passed up from the parser into the same structure which address
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is passed down to the parser. */
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plural += 7;
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args.cp = plural;
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if (PLURAL_PARSE (&args) != 0)
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goto no_plural;
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domain->plural = args.res;
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}
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}
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else
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{
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/* By default we are using the Germanic form: singular form only
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for `one', the plural form otherwise. Yes, this is also what
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English is using since English is a Germanic language. */
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no_plural:
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INIT_GERMANIC_PLURAL ();
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domain->plural = &germanic_plural;
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domain->nplurals = 2;
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}
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}
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#ifdef _LIBC
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void
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internal_function
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_nl_unload_domain (domain)
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struct loaded_domain *domain;
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{
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if (domain->plural != &germanic_plural)
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__gettext_free_exp (domain->plural);
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_nl_free_domain_conv (domain);
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|
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# ifdef _POSIX_MAPPED_FILES
|
|
if (domain->use_mmap)
|
|
munmap ((caddr_t) domain->data, domain->mmap_size);
|
|
else
|
|
# endif /* _POSIX_MAPPED_FILES */
|
|
free ((void *) domain->data);
|
|
|
|
free (domain);
|
|
}
|
|
#endif
|
|
|
|
#endif
|