Annotation of embedaddon/lrzsz/intl/loadmsgcat.c, revision 1.1
1.1 ! misho 1: /* Load needed message catalogs
! 2: Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
! 3:
! 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)
! 7: any later version.
! 8:
! 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.
! 13:
! 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. */
! 17:
! 18: #ifdef HAVE_CONFIG_H
! 19: # include <config.h>
! 20: #endif
! 21:
! 22: #include <fcntl.h>
! 23: #include <sys/types.h>
! 24: #include <sys/stat.h>
! 25:
! 26: #if defined STDC_HEADERS || defined _LIBC
! 27: # include <stdlib.h>
! 28: #endif
! 29:
! 30: #if defined HAVE_UNISTD_H || defined _LIBC
! 31: # include <unistd.h>
! 32: #endif
! 33:
! 34: #if (defined HAVE_MMAP && defined HAVE_MUNMAP) || defined _LIBC
! 35: # include <sys/mman.h>
! 36: #endif
! 37:
! 38: #include "gettext.h"
! 39: #include "gettextP.h"
! 40:
! 41: /* @@ end of prolog @@ */
! 42:
! 43: #ifdef _LIBC
! 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. */
! 47: # define fstat __fstat
! 48: # define open __open
! 49: # define close __close
! 50: # define read __read
! 51: # define mmap __mmap
! 52: # define munmap __munmap
! 53: #endif
! 54:
! 55: /* We need a sign, whether a new catalog was loaded, which can be associated
! 56: with all translations. This is important if the translations are
! 57: cached by one of GCC's features. */
! 58: int _nl_msg_cat_cntr = 0;
! 59:
! 60:
! 61: /* Load the message catalogs specified by FILENAME. If it is no valid
! 62: message catalog do nothing. */
! 63: void
! 64: _nl_load_domain (domain_file)
! 65: struct loaded_l10nfile *domain_file;
! 66: {
! 67: int fd;
! 68: struct stat st;
! 69: struct mo_file_header *data = (struct mo_file_header *) -1;
! 70: #if (defined HAVE_MMAP && defined HAVE_MUNMAP && !defined DISALLOW_MMAP) \
! 71: || defined _LIBC
! 72: int use_mmap = 0;
! 73: #endif
! 74: struct loaded_domain *domain;
! 75:
! 76: domain_file->decided = 1;
! 77: domain_file->data = NULL;
! 78:
! 79: /* If the record does not represent a valid locale the FILENAME
! 80: might be NULL. This can happen when according to the given
! 81: specification the locale file name is different for XPG and CEN
! 82: syntax. */
! 83: if (domain_file->filename == NULL)
! 84: return;
! 85:
! 86: /* Try to open the addressed file. */
! 87: fd = open (domain_file->filename, O_RDONLY);
! 88: if (fd == -1)
! 89: return;
! 90:
! 91: /* We must know about the size of the file. */
! 92: if (fstat (fd, &st) != 0
! 93: && st.st_size < (off_t) sizeof (struct mo_file_header))
! 94: {
! 95: /* Something went wrong. */
! 96: close (fd);
! 97: return;
! 98: }
! 99:
! 100: #if (defined HAVE_MMAP && defined HAVE_MUNMAP && !defined DISALLOW_MMAP) \
! 101: || defined _LIBC
! 102: /* Now we are ready to load the file. If mmap() is available we try
! 103: this first. If not available or it failed we try to load it. */
! 104: data = (struct mo_file_header *) mmap (NULL, st.st_size, PROT_READ,
! 105: MAP_PRIVATE, fd, 0);
! 106:
! 107: if (data != (struct mo_file_header *) -1)
! 108: {
! 109: /* mmap() call was successful. */
! 110: close (fd);
! 111: use_mmap = 1;
! 112: }
! 113: #endif
! 114:
! 115: /* If the data is not yet available (i.e. mmap'ed) we try to load
! 116: it manually. */
! 117: if (data == (struct mo_file_header *) -1)
! 118: {
! 119: off_t to_read;
! 120: char *read_ptr;
! 121:
! 122: data = (struct mo_file_header *) malloc (st.st_size);
! 123: if (data == NULL)
! 124: return;
! 125:
! 126: to_read = st.st_size;
! 127: read_ptr = (char *) data;
! 128: do
! 129: {
! 130: long int nb = (long int) read (fd, read_ptr, to_read);
! 131: if (nb == -1)
! 132: {
! 133: close (fd);
! 134: return;
! 135: }
! 136:
! 137: read_ptr += nb;
! 138: to_read -= nb;
! 139: }
! 140: while (to_read > 0);
! 141:
! 142: close (fd);
! 143: }
! 144:
! 145: /* Using the magic number we can test whether it really is a message
! 146: catalog file. */
! 147: if (data->magic != _MAGIC && data->magic != _MAGIC_SWAPPED)
! 148: {
! 149: /* The magic number is wrong: not a message catalog file. */
! 150: #if (defined HAVE_MMAP && defined HAVE_MUNMAP && !defined DISALLOW_MMAP) \
! 151: || defined _LIBC
! 152: if (use_mmap)
! 153: munmap ((caddr_t) data, st.st_size);
! 154: else
! 155: #endif
! 156: free (data);
! 157: return;
! 158: }
! 159:
! 160: domain_file->data
! 161: = (struct loaded_domain *) malloc (sizeof (struct loaded_domain));
! 162: if (domain_file->data == NULL)
! 163: return;
! 164:
! 165: domain = (struct loaded_domain *) domain_file->data;
! 166: domain->data = (char *) data;
! 167: domain->must_swap = data->magic != _MAGIC;
! 168:
! 169: /* Fill in the information about the available tables. */
! 170: switch (W (domain->must_swap, data->revision))
! 171: {
! 172: case 0:
! 173: domain->nstrings = W (domain->must_swap, data->nstrings);
! 174: domain->orig_tab = (struct string_desc *)
! 175: ((char *) data + W (domain->must_swap, data->orig_tab_offset));
! 176: domain->trans_tab = (struct string_desc *)
! 177: ((char *) data + W (domain->must_swap, data->trans_tab_offset));
! 178: domain->hash_size = W (domain->must_swap, data->hash_tab_size);
! 179: domain->hash_tab = (nls_uint32 *)
! 180: ((char *) data + W (domain->must_swap, data->hash_tab_offset));
! 181: break;
! 182: default:
! 183: /* This is an illegal revision. */
! 184: #if (defined HAVE_MMAP && defined HAVE_MUNMAP && !defined DISALLOW_MMAP) \
! 185: || defined _LIBC
! 186: if (use_mmap)
! 187: munmap ((caddr_t) data, st.st_size);
! 188: else
! 189: #endif
! 190: free (data);
! 191: free (domain);
! 192: domain_file->data = NULL;
! 193: return;
! 194: }
! 195:
! 196: /* Show that one domain is changed. This might make some cached
! 197: translations invalid. */
! 198: ++_nl_msg_cat_cntr;
! 199: }
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