/* Load needed message catalogs. Copyright (C) 1995-1999, 2000, 2001 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* Tell glibc's to provide a prototype for mempcpy(). This must come before because may include , and once has been included, it's too late. */ #ifndef _GNU_SOURCE # define _GNU_SOURCE 1 #endif #ifdef HAVE_CONFIG_H # include #endif #include #include #include #include #include #ifdef __GNUC__ # define alloca __builtin_alloca # define HAVE_ALLOCA 1 #else # if defined HAVE_ALLOCA_H || defined _LIBC # include # else # ifdef _AIX #pragma alloca # else # ifndef alloca char *alloca (); # endif # endif # endif #endif #include #include #if defined HAVE_UNISTD_H || defined _LIBC # include #endif #ifdef _LIBC # include # include #endif #if (defined HAVE_MMAP_FILE && !defined DISALLOW_MMAP) \ || (defined _LIBC && defined _POSIX_MAPPED_FILES) # include # undef HAVE_MMAP # define HAVE_MMAP 1 #else # undef HAVE_MMAP #endif #include "gettext.h" #include "gettextP.h" #ifdef _LIBC # include "../locale/localeinfo.h" #endif /* GCC LOCAL: These macros are used below. */ /* The extra casts work around common compiler bugs. */ #define INTTYPE_SIGNED(t) (! ((t) 0 < (t) -1)) /* The outer cast is needed to work around a bug in Cray C 5.0.3.0. It is necessary at least when t == time_t. */ #define INTTYPE_MINIMUM(t) ((t) (INTTYPE_SIGNED (t) \ ? ~ (t) 0 << (sizeof(t) * CHAR_BIT - 1) : (t) 0)) #define INTTYPE_MAXIMUM(t) ((t) (~ (t) 0 - INTTYPE_MINIMUM (t))) /* @@ end of prolog @@ */ #ifdef _LIBC /* Rename the non ISO C functions. This is required by the standard because some ISO C functions will require linking with this object file and the name space must not be polluted. */ # define open __open # define close __close # define read __read # define mmap __mmap # define munmap __munmap #endif /* 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 PLURAL_PARSE __gettextparse #else # define PLURAL_PARSE gettextparse__ #endif /* For those losing systems which don't have `alloca' we have to add some additional code emulating it. */ #ifdef HAVE_ALLOCA # define freea(p) /* nothing */ #else # define alloca(n) malloc (n) # define freea(p) free (p) #endif /* For systems that distinguish between text and binary I/O. O_BINARY is usually declared in . */ #if !defined O_BINARY && defined _O_BINARY /* For MSC-compatible compilers. */ # define O_BINARY _O_BINARY # define O_TEXT _O_TEXT #endif #ifdef __BEOS__ /* BeOS 5 has O_BINARY and O_TEXT, but they have no effect. */ # undef O_BINARY # undef O_TEXT #endif /* On reasonable systems, binary I/O is the default. */ #ifndef O_BINARY # define O_BINARY 0 #endif /* We need a sign, whether a new catalog was loaded, which can be associated with all translations. This is important if the translations are cached by one of GCC's features. */ int _nl_msg_cat_cntr; #if (defined __GNUC__ && !defined __APPLE_CC__) \ || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L) /* These structs are the constant expression for the germanic plural form determination. It represents the expression "n != 1". GCC LOCAL: Use __extension__ to suppress -Wtraditional warnings. */ __extension__ static const struct expression plvar = { .nargs = 0, .operation = var, }; __extension__ static const struct expression plone = { .nargs = 0, .operation = num, .val = { .num = 1 } }; __extension__ static struct expression germanic_plural = { .nargs = 2, .operation = not_equal, .val = { .args = { [0] = (struct expression *) &plvar, [1] = (struct expression *) &plone } } }; # define INIT_GERMANIC_PLURAL() #else /* For compilers without support for ISO C 99 struct/union initializers: Initialization at run-time. */ static struct expression plvar; static struct expression plone; static struct expression germanic_plural; static void init_germanic_plural () { if (plone.val.num == 0) { plvar.nargs = 0; plvar.operation = var; plone.nargs = 0; plone.operation = num; plone.val.num = 1; germanic_plural.nargs = 2; germanic_plural.operation = not_equal; germanic_plural.val.args[0] = &plvar; germanic_plural.val.args[1] = &plone; } } # define INIT_GERMANIC_PLURAL() init_germanic_plural () #endif /* Initialize the codeset dependent parts of an opened message catalog. Return the header entry. */ const char * internal_function _nl_init_domain_conv (domain_file, domain, domainbinding) struct loaded_l10nfile *domain_file; struct loaded_domain *domain; struct binding *domainbinding; { /* Find out about the character set the file is encoded with. This can be found (in textual form) in the entry "". If this entry does not exist or if this does not contain the `charset=' information, we will assume the charset matches the one the current locale and we don't have to perform any conversion. */ char *nullentry; size_t nullentrylen; /* Preinitialize fields, to avoid recursion during _nl_find_msg. */ domain->codeset_cntr = (domainbinding != NULL ? domainbinding->codeset_cntr : 0); #ifdef _LIBC domain->conv = (__gconv_t) -1; #else # if HAVE_ICONV domain->conv = (iconv_t) -1; # endif #endif domain->conv_tab = NULL; /* Get the header entry. */ nullentry = _nl_find_msg (domain_file, domainbinding, "", &nullentrylen); if (nullentry != NULL) { #if defined _LIBC || HAVE_ICONV const char *charsetstr; charsetstr = strstr (nullentry, "charset="); if (charsetstr != NULL) { size_t len; char *charset; const char *outcharset; charsetstr += strlen ("charset="); len = strcspn (charsetstr, " \t\n"); charset = (char *) alloca (len + 1); # if defined _LIBC || HAVE_MEMPCPY *((char *) mempcpy (charset, charsetstr, len)) = '\0'; # else memcpy (charset, charsetstr, len); charset[len] = '\0'; # endif /* The output charset should normally be determined by the locale. But sometimes the locale is not used or not correctly set up, so we provide a possibility for the user to override this. Moreover, the value specified through bind_textdomain_codeset overrides both. */ if (domainbinding != NULL && domainbinding->codeset != NULL) outcharset = domainbinding->codeset; else { outcharset = getenv ("OUTPUT_CHARSET"); if (outcharset == NULL || outcharset[0] == '\0') { # ifdef _LIBC outcharset = (*_nl_current[LC_CTYPE])->values[_NL_ITEM_INDEX (CODESET)].string; # else # if HAVE_ICONV outcharset = locale_charset (); # endif # endif } } # ifdef _LIBC /* We always want to use transliteration. */ outcharset = norm_add_slashes (outcharset, "TRANSLIT"); charset = norm_add_slashes (charset, NULL); if (__gconv_open (outcharset, charset, &domain->conv, GCONV_AVOID_NOCONV) != __GCONV_OK) domain->conv = (__gconv_t) -1; # else # if HAVE_ICONV /* When using GNU libiconv, we want to use transliteration. */ # if _LIBICONV_VERSION >= 0x0105 len = strlen (outcharset); { char *tmp = (char *) alloca (len + 10 + 1); memcpy (tmp, outcharset, len); memcpy (tmp + len, "//TRANSLIT", 10 + 1); outcharset = tmp; } # endif domain->conv = iconv_open (outcharset, charset); # if _LIBICONV_VERSION >= 0x0105 freea (outcharset); # endif # endif # endif freea (charset); } #endif /* _LIBC || HAVE_ICONV */ } return nullentry; } /* Frees the codeset dependent parts of an opened message catalog. */ void internal_function _nl_free_domain_conv (domain) struct loaded_domain *domain; { if (domain->conv_tab != NULL && domain->conv_tab != (char **) -1) free (domain->conv_tab); #ifdef _LIBC if (domain->conv != (__gconv_t) -1) __gconv_close (domain->conv); #else # if HAVE_ICONV if (domain->conv != (iconv_t) -1) iconv_close (domain->conv); # endif #endif } /* Load the message catalogs specified by FILENAME. If it is no valid message catalog do nothing. */ void internal_function _nl_load_domain (domain_file, domainbinding) struct loaded_l10nfile *domain_file; struct binding *domainbinding; { int fd; size_t size; #ifdef _LIBC struct stat64 st; #else struct stat st; #endif struct mo_file_header *data = (struct mo_file_header *) -1; int use_mmap = 0; struct loaded_domain *domain; const char *nullentry; domain_file->decided = 1; domain_file->data = NULL; /* Note that it would be useless to store domainbinding in domain_file because domainbinding might be == NULL now but != NULL later (after a call to bind_textdomain_codeset). */ /* If the record does not represent a valid locale the FILENAME might be NULL. This can happen when according to the given specification the locale file name is different for XPG and CEN syntax. */ if (domain_file->filename == NULL) return; /* Try to open the addressed file. */ fd = open (domain_file->filename, O_RDONLY | O_BINARY); if (fd == -1) return; /* We must know about the size of the file. */ /* GCC_LOCAL: Use INTTYPE_MAXIMUM for overflow check, cast sizeof to off_t, move set of size below if. */ if ( #ifdef _LIBC __builtin_expect (fstat64 (fd, &st) != 0, 0) #else __builtin_expect (fstat (fd, &st) != 0, 0) #endif || __builtin_expect (st.st_size > INTTYPE_MAXIMUM (ssize_t), 0) || __builtin_expect (st.st_size < (off_t) sizeof (struct mo_file_header), 0)) { /* Something went wrong. */ close (fd); return; } size = (size_t) st.st_size; #ifdef HAVE_MMAP /* Now we are ready to load the file. If mmap() is available we try this first. If not available or it failed we try to load it. */ data = (struct mo_file_header *) mmap (NULL, size, PROT_READ, MAP_PRIVATE, fd, 0); if (__builtin_expect (data != (struct mo_file_header *) -1, 1)) { /* mmap() call was successful. */ close (fd); use_mmap = 1; } #endif /* If the data is not yet available (i.e. mmap'ed) we try to load it manually. */ if (data == (struct mo_file_header *) -1) { size_t to_read; char *read_ptr; data = (struct mo_file_header *) malloc (size); if (data == NULL) return; to_read = size; read_ptr = (char *) data; do { long int nb = (long int) read (fd, read_ptr, to_read); if (nb <= 0) { #ifdef EINTR if (nb == -1 && errno == EINTR) continue; #endif close (fd); return; } read_ptr += nb; to_read -= nb; } while (to_read > 0); close (fd); } /* Using the magic number we can test whether it really is a message catalog file. */ if (__builtin_expect (data->magic != _MAGIC && data->magic != _MAGIC_SWAPPED, 0)) { /* The magic number is wrong: not a message catalog file. */ #ifdef HAVE_MMAP if (use_mmap) munmap ((caddr_t) data, size); else #endif free (data); return; } domain = (struct loaded_domain *) malloc (sizeof (struct loaded_domain)); if (domain == NULL) return; domain_file->data = domain; domain->data = (char *) data; domain->use_mmap = use_mmap; domain->mmap_size = size; domain->must_swap = data->magic != _MAGIC; /* Fill in the information about the available tables. */ switch (W (domain->must_swap, data->revision)) { case 0: domain->nstrings = W (domain->must_swap, data->nstrings); domain->orig_tab = (struct string_desc *) ((char *) data + W (domain->must_swap, data->orig_tab_offset)); domain->trans_tab = (struct string_desc *) ((char *) data + W (domain->must_swap, data->trans_tab_offset)); domain->hash_size = W (domain->must_swap, data->hash_tab_size); domain->hash_tab = (nls_uint32 *) ((char *) data + W (domain->must_swap, data->hash_tab_offset)); break; default: /* This is an invalid revision. */ #ifdef HAVE_MMAP if (use_mmap) munmap ((caddr_t) data, size); else #endif free (data); free (domain); domain_file->data = NULL; return; } /* Now initialize the character set converter from the character set the file is encoded with (found in the header entry) to the domain's specified character set or the locale's character set. */ nullentry = _nl_init_domain_conv (domain_file, domain, domainbinding); /* Also look for a plural specification. */ if (nullentry != NULL) { const char *plural; const char *nplurals; plural = strstr (nullentry, "plural="); nplurals = strstr (nullentry, "nplurals="); if (plural == NULL || nplurals == NULL) goto no_plural; else { /* First get the number. */ char *endp; unsigned long int n; struct parse_args args; nplurals += 9; while (*nplurals != '\0' && isspace ((unsigned char)*nplurals)) ++nplurals; #if defined HAVE_STRTOUL || defined _LIBC n = strtoul (nplurals, &endp, 10); #else for (endp = nplurals, n = 0; *endp >= '0' && *endp <= '9'; endp++) n = n * 10 + (*endp - '0'); #endif domain->nplurals = n; if (nplurals == endp) goto no_plural; /* Due to the restrictions bison imposes onto the interface of the scanner function we have to put the input string and the result passed up from the parser into the same structure which address is passed down to the parser. */ plural += 7; args.cp = plural; if (PLURAL_PARSE (&args) != 0) goto no_plural; domain->plural = args.res; } } else { /* By default we are using the Germanic form: singular form only for `one', the plural form otherwise. Yes, this is also what English is using since English is a Germanic language. */ no_plural: INIT_GERMANIC_PLURAL (); domain->plural = &germanic_plural; domain->nplurals = 2; } } #ifdef _LIBC void internal_function _nl_unload_domain (domain) struct loaded_domain *domain; { if (domain->plural != &germanic_plural) __gettext_free_exp (domain->plural); _nl_free_domain_conv (domain); # 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