summaryrefslogtreecommitdiff
path: root/intl/loadmsgcat.c
diff options
context:
space:
mode:
Diffstat (limited to 'intl/loadmsgcat.c')
-rw-r--r--intl/loadmsgcat.c567
1 files changed, 567 insertions, 0 deletions
diff --git a/intl/loadmsgcat.c b/intl/loadmsgcat.c
new file mode 100644
index 0000000..f99ebee
--- /dev/null
+++ b/intl/loadmsgcat.c
@@ -0,0 +1,567 @@
+/* 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 <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 <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#ifdef __GNUC__
+# define alloca __builtin_alloca
+# define HAVE_ALLOCA 1
+#else
+# if defined HAVE_ALLOCA_H || defined _LIBC
+# include <alloca.h>
+# else
+# ifdef _AIX
+ #pragma alloca
+# else
+# ifndef alloca
+char *alloca ();
+# endif
+# endif
+# endif
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+
+#if defined HAVE_UNISTD_H || defined _LIBC
+# include <unistd.h>
+#endif
+
+#ifdef _LIBC
+# include <langinfo.h>
+# include <locale.h>
+#endif
+
+#if (defined HAVE_MMAP && defined HAVE_MUNMAP && !defined DISALLOW_MMAP) \
+ || (defined _LIBC && defined _POSIX_MAPPED_FILES)
+# include <sys/mman.h>
+# 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
+
+/* @@ 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 <fcntl.h>. */
+#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". */
+static const struct expression plvar =
+{
+ .nargs = 0,
+ .operation = var,
+};
+static const struct expression plone =
+{
+ .nargs = 0,
+ .operation = num,
+ .val =
+ {
+ .num = 1
+ }
+};
+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
+ extern const char *locale_charset (void);
+ 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. */
+ if (
+#ifdef _LIBC
+ __builtin_expect (fstat64 (fd, &st) != 0, 0)
+#else
+ __builtin_expect (fstat (fd, &st) != 0, 0)
+#endif
+ || __builtin_expect ((size = (size_t) st.st_size) != st.st_size, 0)
+ || __builtin_expect (size < sizeof (struct mo_file_header), 0))
+ {
+ /* Something went wrong. */
+ close (fd);
+ return;
+ }
+
+#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 (*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
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-08 03:34:12 +0000