| 1 | /* Copyright (C) 1995-1999, 2000-2003 Free Software Foundation, Inc.
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| 2 | Contributed by Ulrich Drepper <[email protected]>, 1995.
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| 3 |
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| 4 | This program is free software; you can redistribute it and/or modify it
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| 5 | under the terms of the GNU Library General Public License as published
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| 6 | by the Free Software Foundation; either version 2, or (at your option)
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| 7 | any later version.
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| 8 |
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| 9 | This program is distributed in the hope that it will be useful,
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 12 | Library General Public License for more details.
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| 13 |
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| 14 | You should have received a copy of the GNU Library General Public
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| 15 | License along with this program; if not, write to the Free Software
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| 16 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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| 17 | USA. */
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| 18 |
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| 19 | /* Tell glibc's <string.h> to provide a prototype for stpcpy().
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| 20 | This must come before <config.h> because <config.h> may include
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| 21 | <features.h>, and once <features.h> has been included, it's too late. */
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| 22 | #ifndef _GNU_SOURCE
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| 23 | # define _GNU_SOURCE 1
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| 24 | #endif
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| 25 |
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| 26 | #ifdef HAVE_CONFIG_H
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| 27 | # include <config.h>
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| 28 | #endif
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| 29 |
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| 30 | #include <string.h>
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| 31 |
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| 32 | #if defined _LIBC || defined HAVE_ARGZ_H
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| 33 | # include <argz.h>
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| 34 | #endif
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| 35 | #include <ctype.h>
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| 36 | #include <sys/types.h>
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| 37 | #include <stdlib.h>
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| 38 |
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| 39 | #include "loadinfo.h"
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| 40 |
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| 41 | /* On some strange systems still no definition of NULL is found. Sigh! */
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| 42 | #ifndef NULL
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| 43 | # if defined __STDC__ && __STDC__
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| 44 | # define NULL ((void *) 0)
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| 45 | # else
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| 46 | # define NULL 0
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| 47 | # endif
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| 48 | #endif
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| 49 |
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| 50 | /* @@ end of prolog @@ */
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| 51 |
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| 52 | #ifdef _LIBC
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| 53 | /* Rename the non ANSI C functions. This is required by the standard
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| 54 | because some ANSI C functions will require linking with this object
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| 55 | file and the name space must not be polluted. */
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| 56 | # ifndef stpcpy
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| 57 | # define stpcpy(dest, src) __stpcpy(dest, src)
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| 58 | # endif
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| 59 | #else
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| 60 | # ifndef HAVE_STPCPY
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| 61 | static char *stpcpy (char *dest, const char *src);
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| 62 | # endif
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| 63 | #endif
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| 64 |
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| 65 | /* Pathname support.
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| 66 | ISSLASH(C) tests whether C is a directory separator character.
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| 67 | IS_ABSOLUTE_PATH(P) tests whether P is an absolute path. If it is not,
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| 68 | it may be concatenated to a directory pathname.
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| 69 | */
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| 70 | #if defined _WIN32 || defined __WIN32__ || defined __EMX__ || defined __DJGPP__
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| 71 | /* Win32, OS/2, DOS */
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| 72 | # define ISSLASH(C) ((C) == '/' || (C) == '\\')
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| 73 | # define HAS_DEVICE(P) \
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| 74 | ((((P)[0] >= 'A' && (P)[0] <= 'Z') || ((P)[0] >= 'a' && (P)[0] <= 'z')) \
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| 75 | && (P)[1] == ':')
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| 76 | # define IS_ABSOLUTE_PATH(P) (ISSLASH ((P)[0]) || HAS_DEVICE (P))
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| 77 | #else
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| 78 | /* Unix */
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| 79 | # define ISSLASH(C) ((C) == '/')
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| 80 | # define IS_ABSOLUTE_PATH(P) ISSLASH ((P)[0])
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| 81 | #endif
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| 82 |
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| 83 | /* Define function which are usually not available. */
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| 84 |
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| 85 | #if !defined _LIBC && !defined HAVE___ARGZ_COUNT
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| 86 | /* Returns the number of strings in ARGZ. */
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| 87 | static size_t
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| 88 | argz_count__ (const char *argz, size_t len)
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| 89 | {
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| 90 | size_t count = 0;
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| 91 | while (len > 0)
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| 92 | {
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| 93 | size_t part_len = strlen (argz);
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| 94 | argz += part_len + 1;
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| 95 | len -= part_len + 1;
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| 96 | count++;
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| 97 | }
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| 98 | return count;
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| 99 | }
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| 100 | # undef __argz_count
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| 101 | # define __argz_count(argz, len) argz_count__ (argz, len)
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| 102 | #else
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| 103 | # ifdef _LIBC
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| 104 | # define __argz_count(argz, len) INTUSE(__argz_count) (argz, len)
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| 105 | # endif
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| 106 | #endif /* !_LIBC && !HAVE___ARGZ_COUNT */
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| 107 |
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| 108 | #if !defined _LIBC && !defined HAVE___ARGZ_STRINGIFY
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| 109 | /* Make '\0' separated arg vector ARGZ printable by converting all the '\0's
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| 110 | except the last into the character SEP. */
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| 111 | static void
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| 112 | argz_stringify__ (char *argz, size_t len, int sep)
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| 113 | {
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| 114 | while (len > 0)
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| 115 | {
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| 116 | size_t part_len = strlen (argz);
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| 117 | argz += part_len;
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| 118 | len -= part_len + 1;
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| 119 | if (len > 0)
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| 120 | *argz++ = sep;
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| 121 | }
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| 122 | }
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| 123 | # undef __argz_stringify
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| 124 | # define __argz_stringify(argz, len, sep) argz_stringify__ (argz, len, sep)
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| 125 | #else
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| 126 | # ifdef _LIBC
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| 127 | # define __argz_stringify(argz, len, sep) \
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| 128 | INTUSE(__argz_stringify) (argz, len, sep)
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| 129 | # endif
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| 130 | #endif /* !_LIBC && !HAVE___ARGZ_STRINGIFY */
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| 131 |
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| 132 | #if !defined _LIBC && !defined HAVE___ARGZ_NEXT
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| 133 | static char *
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| 134 | argz_next__ (char *argz, size_t argz_len, const char *entry)
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| 135 | {
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| 136 | if (entry)
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| 137 | {
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| 138 | if (entry < argz + argz_len)
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| 139 | entry = strchr (entry, '\0') + 1;
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| 140 |
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| 141 | return entry >= argz + argz_len ? NULL : (char *) entry;
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| 142 | }
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| 143 | else
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| 144 | if (argz_len > 0)
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| 145 | return argz;
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| 146 | else
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| 147 | return 0;
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| 148 | }
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| 149 | # undef __argz_next
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| 150 | # define __argz_next(argz, len, entry) argz_next__ (argz, len, entry)
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| 151 | #endif /* !_LIBC && !HAVE___ARGZ_NEXT */
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| 152 |
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| 153 |
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| 154 | /* Return number of bits set in X. */
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| 155 | static inline int
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| 156 | pop (int x)
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| 157 | {
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| 158 | /* We assume that no more than 16 bits are used. */
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| 159 | x = ((x & ~0x5555) >> 1) + (x & 0x5555);
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| 160 | x = ((x & ~0x3333) >> 2) + (x & 0x3333);
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| 161 | x = ((x >> 4) + x) & 0x0f0f;
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| 162 | x = ((x >> 8) + x) & 0xff;
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| 163 |
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| 164 | return x;
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| 165 | }
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| 166 |
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| 167 | |
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| 168 |
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| 169 | struct loaded_l10nfile *
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| 170 | _nl_make_l10nflist (struct loaded_l10nfile **l10nfile_list,
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| 171 | const char *dirlist, size_t dirlist_len,
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| 172 | int mask, const char *language, const char *territory,
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| 173 | const char *codeset, const char *normalized_codeset,
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| 174 | const char *modifier, const char *special,
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| 175 | const char *sponsor, const char *revision,
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| 176 | const char *filename, int do_allocate)
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| 177 | {
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| 178 | char *abs_filename;
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| 179 | struct loaded_l10nfile **lastp;
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| 180 | struct loaded_l10nfile *retval;
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| 181 | char *cp;
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| 182 | size_t dirlist_count;
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| 183 | size_t entries;
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| 184 | int cnt;
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| 185 |
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| 186 | /* If LANGUAGE contains an absolute directory specification, we ignore
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| 187 | DIRLIST. */
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| 188 | if (IS_ABSOLUTE_PATH (language))
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| 189 | dirlist_len = 0;
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| 190 |
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| 191 | /* Allocate room for the full file name. */
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| 192 | abs_filename = (char *) malloc (dirlist_len
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| 193 | + strlen (language)
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| 194 | + ((mask & TERRITORY) != 0
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| 195 | ? strlen (territory) + 1 : 0)
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| 196 | + ((mask & XPG_CODESET) != 0
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| 197 | ? strlen (codeset) + 1 : 0)
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| 198 | + ((mask & XPG_NORM_CODESET) != 0
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| 199 | ? strlen (normalized_codeset) + 1 : 0)
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| 200 | + (((mask & XPG_MODIFIER) != 0
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| 201 | || (mask & CEN_AUDIENCE) != 0)
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| 202 | ? strlen (modifier) + 1 : 0)
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| 203 | + ((mask & CEN_SPECIAL) != 0
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| 204 | ? strlen (special) + 1 : 0)
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| 205 | + (((mask & CEN_SPONSOR) != 0
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| 206 | || (mask & CEN_REVISION) != 0)
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| 207 | ? (1 + ((mask & CEN_SPONSOR) != 0
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| 208 | ? strlen (sponsor) : 0)
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| 209 | + ((mask & CEN_REVISION) != 0
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| 210 | ? strlen (revision) + 1 : 0)) : 0)
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| 211 | + 1 + strlen (filename) + 1);
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| 212 |
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| 213 | if (abs_filename == NULL)
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| 214 | return NULL;
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| 215 |
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| 216 | /* Construct file name. */
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| 217 | cp = abs_filename;
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| 218 | if (dirlist_len > 0)
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| 219 | {
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| 220 | memcpy (cp, dirlist, dirlist_len);
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| 221 | __argz_stringify (cp, dirlist_len, PATH_SEPARATOR);
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| 222 | cp += dirlist_len;
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| 223 | cp[-1] = '/';
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| 224 | }
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| 225 |
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| 226 | cp = stpcpy (cp, language);
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| 227 |
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| 228 | if ((mask & TERRITORY) != 0)
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| 229 | {
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| 230 | *cp++ = '_';
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| 231 | cp = stpcpy (cp, territory);
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| 232 | }
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| 233 | if ((mask & XPG_CODESET) != 0)
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| 234 | {
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| 235 | *cp++ = '.';
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| 236 | cp = stpcpy (cp, codeset);
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| 237 | }
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| 238 | if ((mask & XPG_NORM_CODESET) != 0)
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| 239 | {
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| 240 | *cp++ = '.';
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| 241 | cp = stpcpy (cp, normalized_codeset);
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| 242 | }
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| 243 | if ((mask & (XPG_MODIFIER | CEN_AUDIENCE)) != 0)
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| 244 | {
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| 245 | /* This component can be part of both syntaces but has different
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| 246 | leading characters. For CEN we use `+', else `@'. */
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| 247 | *cp++ = (mask & CEN_AUDIENCE) != 0 ? '+' : '@';
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| 248 | cp = stpcpy (cp, modifier);
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| 249 | }
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| 250 | if ((mask & CEN_SPECIAL) != 0)
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| 251 | {
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| 252 | *cp++ = '+';
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| 253 | cp = stpcpy (cp, special);
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| 254 | }
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| 255 | if ((mask & (CEN_SPONSOR | CEN_REVISION)) != 0)
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| 256 | {
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| 257 | *cp++ = ',';
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| 258 | if ((mask & CEN_SPONSOR) != 0)
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| 259 | cp = stpcpy (cp, sponsor);
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| 260 | if ((mask & CEN_REVISION) != 0)
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| 261 | {
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| 262 | *cp++ = '_';
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| 263 | cp = stpcpy (cp, revision);
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| 264 | }
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| 265 | }
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| 266 |
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| 267 | *cp++ = '/';
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| 268 | stpcpy (cp, filename);
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| 269 |
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| 270 | /* Look in list of already loaded domains whether it is already
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| 271 | available. */
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| 272 | lastp = l10nfile_list;
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| 273 | for (retval = *l10nfile_list; retval != NULL; retval = retval->next)
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| 274 | if (retval->filename != NULL)
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| 275 | {
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| 276 | int compare = strcmp (retval->filename, abs_filename);
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| 277 | if (compare == 0)
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| 278 | /* We found it! */
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| 279 | break;
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| 280 | if (compare < 0)
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| 281 | {
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| 282 | /* It's not in the list. */
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| 283 | retval = NULL;
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| 284 | break;
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| 285 | }
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| 286 |
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| 287 | lastp = &retval->next;
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| 288 | }
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| 289 |
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| 290 | if (retval != NULL || do_allocate == 0)
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| 291 | {
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| 292 | free (abs_filename);
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| 293 | return retval;
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| 294 | }
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| 295 |
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| 296 | dirlist_count = (dirlist_len > 0 ? __argz_count (dirlist, dirlist_len) : 1);
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| 297 |
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| 298 | /* Allocate a new loaded_l10nfile. */
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| 299 | retval =
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| 300 | (struct loaded_l10nfile *)
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| 301 | malloc (sizeof (*retval)
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| 302 | + (((dirlist_count << pop (mask)) + (dirlist_count > 1 ? 1 : 0))
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| 303 | * sizeof (struct loaded_l10nfile *)));
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| 304 | if (retval == NULL)
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| 305 | return NULL;
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| 306 |
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| 307 | retval->filename = abs_filename;
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| 308 |
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| 309 | /* We set retval->data to NULL here; it is filled in later.
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| 310 | Setting retval->decided to 1 here means that retval does not
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| 311 | correspond to a real file (dirlist_count > 1) or is not worth
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| 312 | looking up (if an unnormalized codeset was specified). */
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| 313 | retval->decided = (dirlist_count > 1
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| 314 | || ((mask & XPG_CODESET) != 0
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| 315 | && (mask & XPG_NORM_CODESET) != 0));
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| 316 | retval->data = NULL;
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| 317 |
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| 318 | retval->next = *lastp;
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| 319 | *lastp = retval;
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| 320 |
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| 321 | entries = 0;
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| 322 | /* Recurse to fill the inheritance list of RETVAL.
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| 323 | If the DIRLIST is a real list (i.e. DIRLIST_COUNT > 1), the RETVAL
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| 324 | entry does not correspond to a real file; retval->filename contains
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| 325 | colons. In this case we loop across all elements of DIRLIST and
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| 326 | across all bit patterns dominated by MASK.
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| 327 | If the DIRLIST is a single directory or entirely redundant (i.e.
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| 328 | DIRLIST_COUNT == 1), we loop across all bit patterns dominated by
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| 329 | MASK, excluding MASK itself.
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| 330 | In either case, we loop down from MASK to 0. This has the effect
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| 331 | that the extra bits in the locale name are dropped in this order:
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| 332 | first the modifier, then the territory, then the codeset, then the
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| 333 | normalized_codeset. */
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| 334 | for (cnt = dirlist_count > 1 ? mask : mask - 1; cnt >= 0; --cnt)
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| 335 | if ((cnt & ~mask) == 0
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| 336 | && ((cnt & CEN_SPECIFIC) == 0 || (cnt & XPG_SPECIFIC) == 0)
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| 337 | && ((cnt & XPG_CODESET) == 0 || (cnt & XPG_NORM_CODESET) == 0))
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| 338 | {
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| 339 | if (dirlist_count > 1)
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| 340 | {
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| 341 | /* Iterate over all elements of the DIRLIST. */
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| 342 | char *dir = NULL;
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| 343 |
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| 344 | while ((dir = __argz_next ((char *) dirlist, dirlist_len, dir))
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| 345 | != NULL)
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| 346 | retval->successor[entries++]
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| 347 | = _nl_make_l10nflist (l10nfile_list, dir, strlen (dir) + 1,
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| 348 | cnt, language, territory, codeset,
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| 349 | normalized_codeset, modifier, special,
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| 350 | sponsor, revision, filename, 1);
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| 351 | }
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| 352 | else
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| 353 | retval->successor[entries++]
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| 354 | = _nl_make_l10nflist (l10nfile_list, dirlist, dirlist_len,
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| 355 | cnt, language, territory, codeset,
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| 356 | normalized_codeset, modifier, special,
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| 357 | sponsor, revision, filename, 1);
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| 358 | }
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| 359 | retval->successor[entries] = NULL;
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| 360 |
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| 361 | return retval;
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| 362 | }
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| 363 | |
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| 364 |
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| 365 | /* Normalize codeset name. There is no standard for the codeset
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| 366 | names. Normalization allows the user to use any of the common
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| 367 | names. The return value is dynamically allocated and has to be
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| 368 | freed by the caller. */
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| 369 | const char *
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| 370 | _nl_normalize_codeset (const char *codeset, size_t name_len)
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| 371 | {
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| 372 | int len = 0;
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| 373 | int only_digit = 1;
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| 374 | char *retval;
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| 375 | char *wp;
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| 376 | size_t cnt;
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| 377 |
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| 378 | for (cnt = 0; cnt < name_len; ++cnt)
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| 379 | if (isalnum ((unsigned char) codeset[cnt]))
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| 380 | {
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| 381 | ++len;
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| 382 |
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| 383 | if (isalpha ((unsigned char) codeset[cnt]))
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| 384 | only_digit = 0;
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| 385 | }
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| 386 |
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| 387 | retval = (char *) malloc ((only_digit ? 3 : 0) + len + 1);
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| 388 |
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| 389 | if (retval != NULL)
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| 390 | {
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| 391 | if (only_digit)
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| 392 | wp = stpcpy (retval, "iso");
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| 393 | else
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| 394 | wp = retval;
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| 395 |
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| 396 | for (cnt = 0; cnt < name_len; ++cnt)
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| 397 | if (isalpha ((unsigned char) codeset[cnt]))
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| 398 | *wp++ = tolower ((unsigned char) codeset[cnt]);
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| 399 | else if (isdigit ((unsigned char) codeset[cnt]))
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| 400 | *wp++ = codeset[cnt];
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| 401 |
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| 402 | *wp = '\0';
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| 403 | }
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| 404 |
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| 405 | return (const char *) retval;
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| 406 | }
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| 407 |
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| 408 |
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| 409 | /* @@ begin of epilog @@ */
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| 410 |
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| 411 | /* We don't want libintl.a to depend on any other library. So we
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| 412 | avoid the non-standard function stpcpy. In GNU C Library this
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| 413 | function is available, though. Also allow the symbol HAVE_STPCPY
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| 414 | to be defined. */
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| 415 | #if !_LIBC && !HAVE_STPCPY
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| 416 | static char *
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| 417 | stpcpy (char *dest, const char *src)
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| 418 | {
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|---|
| 419 | while ((*dest++ = *src++) != '\0')
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| 420 | /* Do nothing. */ ;
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| 421 | return dest - 1;
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| 422 | }
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| 423 | #endif
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