1 /* Load needed message catalogs.
2 Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2, or (at your option)
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software Foundation,
16 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
23 #include <sys/types.h>
26 #if defined STDC_HEADERS || defined _LIBC
30 #if defined HAVE_UNISTD_H || defined _LIBC
34 #if (defined HAVE_MMAP && defined HAVE_MUNMAP) || defined _LIBC
35 # include <sys/mman.h>
41 /* @@ end of prolog @@ */
44 /* Rename the non ISO C functions. This is required by the standard
45 because some ISO C functions will require linking with this object
46 file and the name space must not be polluted. */
48 # define close __close
51 # define munmap __munmap
54 /* We need a sign, whether a new catalog was loaded, which can be associated
55 with all translations. This is important if the translations are
56 cached by one of GCC's features. */
57 int _nl_msg_cat_cntr
= 0;
60 /* Load the message catalogs specified by FILENAME. If it is no valid
61 message catalog do nothing. */
64 _nl_load_domain (domain_file
)
65 struct loaded_l10nfile
*domain_file
;
70 struct mo_file_header
*data
= (struct mo_file_header
*) -1;
71 #if (defined HAVE_MMAP && defined HAVE_MUNMAP && !defined DISALLOW_MMAP) \
75 struct loaded_domain
*domain
;
77 domain_file
->decided
= 1;
78 domain_file
->data
= NULL
;
80 /* If the record does not represent a valid locale the FILENAME
81 might be NULL. This can happen when according to the given
82 specification the locale file name is different for XPG and CEN
84 if (domain_file
->filename
== NULL
)
87 /* Try to open the addressed file. */
88 fd
= open (domain_file
->filename
, O_RDONLY
);
92 /* We must know about the size of the file. */
93 if (fstat (fd
, &st
) != 0
94 || (size
= (size_t) st
.st_size
) != st
.st_size
95 || size
< sizeof (struct mo_file_header
))
97 /* Something went wrong. */
102 #if (defined HAVE_MMAP && defined HAVE_MUNMAP && !defined DISALLOW_MMAP) \
104 /* Now we are ready to load the file. If mmap() is available we try
105 this first. If not available or it failed we try to load it. */
106 data
= (struct mo_file_header
*) mmap (NULL
, size
, PROT_READ
,
109 if (data
!= (struct mo_file_header
*) -1)
111 /* mmap() call was successful. */
117 /* If the data is not yet available (i.e. mmap'ed) we try to load
119 if (data
== (struct mo_file_header
*) -1)
124 data
= (struct mo_file_header
*) malloc (size
);
129 read_ptr
= (char *) data
;
132 long int nb
= (long int) read (fd
, read_ptr
, to_read
);
147 /* Using the magic number we can test whether it really is a message
149 if (data
->magic
!= _MAGIC
&& data
->magic
!= _MAGIC_SWAPPED
)
151 /* The magic number is wrong: not a message catalog file. */
152 #if (defined HAVE_MMAP && defined HAVE_MUNMAP && !defined DISALLOW_MMAP) \
155 munmap ((caddr_t
) data
, size
);
163 = (struct loaded_domain
*) malloc (sizeof (struct loaded_domain
));
164 if (domain_file
->data
== NULL
)
167 domain
= (struct loaded_domain
*) domain_file
->data
;
168 domain
->data
= (char *) data
;
169 #if (defined HAVE_MMAP && defined HAVE_MUNMAP && !defined DISALLOW_MMAP) \
171 domain
->use_mmap
= use_mmap
;
173 domain
->mmap_size
= size
;
174 domain
->must_swap
= data
->magic
!= _MAGIC
;
176 /* Fill in the information about the available tables. */
177 switch (W (domain
->must_swap
, data
->revision
))
180 domain
->nstrings
= W (domain
->must_swap
, data
->nstrings
);
181 domain
->orig_tab
= (struct string_desc
*)
182 ((char *) data
+ W (domain
->must_swap
, data
->orig_tab_offset
));
183 domain
->trans_tab
= (struct string_desc
*)
184 ((char *) data
+ W (domain
->must_swap
, data
->trans_tab_offset
));
185 domain
->hash_size
= W (domain
->must_swap
, data
->hash_tab_size
);
186 domain
->hash_tab
= (nls_uint32
*)
187 ((char *) data
+ W (domain
->must_swap
, data
->hash_tab_offset
));
190 /* This is an illegal revision. */
191 #if (defined HAVE_MMAP && defined HAVE_MUNMAP && !defined DISALLOW_MMAP) \
194 munmap ((caddr_t
) data
, size
);
199 domain_file
->data
= NULL
;
203 /* Show that one domain is changed. This might make some cached
204 translations invalid. */
212 _nl_unload_domain (domain
)
213 struct loaded_domain
*domain
;
215 if (domain
->use_mmap
)
216 munmap ((caddr_t
) domain
->data
, domain
->mmap_size
);
218 free ((void *) domain
->data
);
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