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/* Load needed message catalogs Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU 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 General Public License for more details. You should have received a copy of the GNU 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. */ #ifdef HAVE_CONFIG_H # include <lynx_cfg.h> #endif #include <fcntl.h> #include <sys/types.h> #include <sys/stat.h> #if defined STDC_HEADERS || defined _LIBC # include <stdlib.h> #endif #if defined HAVE_UNISTD_H || defined _LIBC # include <unistd.h> #endif #if (defined HAVE_MMAP && defined HAVE_MUNMAP) || defined _LIBC # include <sys/mman.h> #endif #include <gettext.h> #include <gettextP.h> /* @@ 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 fstat __fstat # define open __open # define close __close # define read __read # define mmap __mmap # define munmap __munmap #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 = 0; /* Load the message catalogs specified by FILENAME. If it is no valid message catalog do nothing. */ void _nl_load_domain (domain_file) struct loaded_l10nfile *domain_file; { int fd; struct stat st; struct mo_file_header *data = (struct mo_file_header *) -1; #if (defined HAVE_MMAP && defined HAVE_MUNMAP && !defined DISALLOW_MMAP) \ || defined _LIBC int use_mmap = 0; #endif struct loaded_domain *domain; domain_file->decided = 1; domain_file->data = NULL; /* 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); if (fd == -1) return; /* We must know about the size of the file. */ if (fstat (fd, &st) != 0 && st.st_size < (off_t) sizeof (struct mo_file_header)) { /* Something went wrong. */ close (fd); return; } #if (defined HAVE_MMAP && defined HAVE_MUNMAP && !defined DISALLOW_MMAP) \ || defined _LIBC /* 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, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0); if (data != (struct mo_file_header *) -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) { off_t to_read; char *read_ptr; data = (struct mo_file_header *) malloc (st.st_size); if (data == NULL) return; to_read = st.st_size; read_ptr = (char *) data; do { long int nb = (long int) read (fd, read_ptr, to_read); if (nb == -1) { 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 (data->magic != _MAGIC && data->magic != _MAGIC_SWAPPED) { /* The magic number is wrong: not a message catalog file. */ #if (defined HAVE_MMAP && defined HAVE_MUNMAP && !defined DISALLOW_MMAP) \ || defined _LIBC if (use_mmap) munmap ((caddr_t) data, st.st_size); else #endif free (data); return; } domain_file->data = (struct loaded_domain *) malloc (sizeof (struct loaded_domain)); if (domain_file->data == NULL) return; domain = (struct loaded_domain *) domain_file->data; domain->data = (char *) data; 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 illegal revision. */ #if (defined HAVE_MMAP && defined HAVE_MUNMAP && !defined DISALLOW_MMAP) \ || defined _LIBC if (use_mmap) munmap ((caddr_t) data, st.st_size); else #endif free (data); free (domain); domain_file->data = NULL; return; } /* Show that one domain is changed. This might make some cached translations invalid. */ ++_nl_msg_cat_cntr; }


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