intl/loadinfo.h

   1 /* Copyright (C) 1996-1999, 2000-2002 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
   4
   5    This program is free software; you can redistribute it and/or modify it
   6    under the terms of the GNU Library General Public License as published
   7    by the Free Software Foundation; either version 2, or (at your option)
   8    any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with this program; if not, write to the Free Software
  17    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  18    USA.  */
  19
  20 #ifndef _LOADINFO_H
  21 #define _LOADINFO_H     1
  22
  23 /* Declarations of locale dependent catalog lookup functions.
  24    Implemented in
  25
  26      localealias.c    Possibly replace a locale name by another.
  27      explodename.c    Split a locale name into its various fields.
  28      l10nflist.c      Generate a list of filenames of possible message catalogs.
  29      finddomain.c     Find and open the relevant message catalogs.
  30
  31    The main function _nl_find_domain() in finddomain.c is declared
  32    in gettextP.h.
  33  */
  34
  35 #ifndef PARAMS
  36 # if __STDC__ || defined __GNUC__ || defined __SUNPRO_C || defined __cplusplus || __PROTOTYPES
  37 #  define PARAMS(args) args
  38 # else
  39 #  define PARAMS(args) ()
  40 # endif
  41 #endif
  42
  43 #ifndef internal_function
  44 # define internal_function
  45 #endif
  46
  47 /* Tell the compiler when a conditional or integer expression is
  48    almost always true or almost always false.  */
  49 #ifndef HAVE_BUILTIN_EXPECT
  50 # define __builtin_expect(expr, val) (expr)
  51 #endif
  52
  53 /* Separator in PATH like lists of pathnames.  */
  54 #if defined _WIN32 || defined __WIN32__ || defined __EMX__ || defined __DJGPP__
  55   /* Win32, OS/2, DOS */
  56 # define PATH_SEPARATOR ';'
  57 #else
  58   /* Unix */
  59 # define PATH_SEPARATOR ':'
  60 #endif
  61
  62 /* Encoding of locale name parts.  */
  63 #define CEN_REVISION            1
  64 #define CEN_SPONSOR             2
  65 #define CEN_SPECIAL             4
  66 #define XPG_NORM_CODESET        8
  67 #define XPG_CODESET             16
  68 #define TERRITORY               32
  69 #define CEN_AUDIENCE            64
  70 #define XPG_MODIFIER            128
  71
  72 #define CEN_SPECIFIC    (CEN_REVISION|CEN_SPONSOR|CEN_SPECIAL|CEN_AUDIENCE)
  73 #define XPG_SPECIFIC    (XPG_CODESET|XPG_NORM_CODESET|XPG_MODIFIER)
  74
  75
  76 struct loaded_l10nfile
  77 {
  78   const char *filename;
  79   int decided;
  80
  81   const void *data;
  82
  83   struct loaded_l10nfile *next;
  84   struct loaded_l10nfile *successor[1];
  85 };
  86
  87
  88 /* Normalize codeset name.  There is no standard for the codeset
  89    names.  Normalization allows the user to use any of the common
  90    names.  The return value is dynamically allocated and has to be
  91    freed by the caller.  */
  92 extern const char *_nl_normalize_codeset PARAMS ((const char *codeset,
  93                                                   size_t name_len));
  94
  95 /* Lookup a locale dependent file.
  96    *L10NFILE_LIST denotes a pool of lookup results of locale dependent
  97    files of the same kind, sorted in decreasing order of ->filename.
  98    DIRLIST and DIRLIST_LEN are an argz list of directories in which to
  99    look, containing at least one directory (i.e. DIRLIST_LEN > 0).
 100    MASK, LANGUAGE, TERRITORY, CODESET, NORMALIZED_CODESET, MODIFIER,
 101    SPECIAL, SPONSOR, REVISION are the pieces of the locale name, as
 102    produced by _nl_explode_name().  FILENAME is the filename suffix.
 103    The return value is the lookup result, either found in *L10NFILE_LIST,
 104    or - if DO_ALLOCATE is nonzero - freshly allocated, or possibly NULL.
 105    If the return value is non-NULL, it is added to *L10NFILE_LIST, and
 106    its ->next field denotes the chaining inside *L10NFILE_LIST, and
 107    furthermore its ->successor[] field contains a list of other lookup
 108    results from which this lookup result inherits.  */
 109 extern struct loaded_l10nfile *
 110 _nl_make_l10nflist PARAMS ((struct loaded_l10nfile **l10nfile_list,
 111                             const char *dirlist, size_t dirlist_len, int mask,
 112                             const char *language, const char *territory,
 113                             const char *codeset,
 114                             const char *normalized_codeset,
 115                             const char *modifier, const char *special,
 116                             const char *sponsor, const char *revision,
 117                             const char *filename, int do_allocate));
 118
 119 /* Lookup the real locale name for a locale alias NAME, or NULL if
 120    NAME is not a locale alias (but possibly a real locale name).
 121    The return value is statically allocated and must not be freed.  */
 122 extern const char *_nl_expand_alias PARAMS ((const char *name));
 123
 124 /* Split a locale name NAME into its pieces: language, modifier,
 125    territory, codeset, special, sponsor, revision.
 126    NAME gets destructively modified: NUL bytes are inserted here and
 127    there.  *LANGUAGE gets assigned NAME.  Each of *MODIFIER, *TERRITORY,
 128    *CODESET, *SPECIAL, *SPONSOR, *REVISION gets assigned either a
 129    pointer into the old NAME string, or NULL.  *NORMALIZED_CODESET
 130    gets assigned the expanded *CODESET, if it is different from *CODESET;
 131    this one is dynamically allocated and has to be freed by the caller.
 132    The return value is a bitmask, where each bit corresponds to one
 133    filled-in value:
 134      XPG_MODIFIER, CEN_AUDIENCE  for *MODIFIER,
 135      TERRITORY                   for *TERRITORY,
 136      XPG_CODESET                 for *CODESET,
 137      XPG_NORM_CODESET            for *NORMALIZED_CODESET,
 138      CEN_SPECIAL                 for *SPECIAL,
 139      CEN_SPONSOR                 for *SPONSOR,
 140      CEN_REVISION                for *REVISION.
 141  */
 142 extern int _nl_explode_name PARAMS ((char *name, const char **language,
 143                                      const char **modifier,
 144                                      const char **territory,
 145                                      const char **codeset,
 146                                      const char **normalized_codeset,
 147                                      const char **special,
 148                                      const char **sponsor,
 149                                      const char **revision));
 150
 151 /* Split a locale name NAME into a leading language part and all the
 152    rest.  Return a pointer to the first character after the language,
 153    i.e. to the first byte of the rest.  */
 154 extern char *_nl_find_language PARAMS ((const char *name));
 155
 156 #endif  /* loadinfo.h */