intl/loadinfo.h

   1 /* Copyright (C) 1996-2017 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
   6    it under the terms of the GNU Lesser General Public License as published by
   7    the Free Software Foundation; either version 2.1 of the License, or
   8    (at your option) 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
  13    GNU Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  17
  18 #ifndef _LOADINFO_H
  19 #define _LOADINFO_H     1
  20
  21 /* Declarations of locale dependent catalog lookup functions.
  22    Implemented in
  23
  24      localealias.c    Possibly replace a locale name by another.
  25      explodename.c    Split a locale name into its various fields.
  26      l10nflist.c      Generate a list of filenames of possible message catalogs.
  27      finddomain.c     Find and open the relevant message catalogs.
  28
  29    The main function _nl_find_domain() in finddomain.c is declared
  30    in gettextP.h.
  31  */
  32
  33 #ifndef internal_function
  34 # define internal_function
  35 #endif
  36
  37 #ifndef LIBINTL_DLL_EXPORTED
  38 # define LIBINTL_DLL_EXPORTED
  39 #endif
  40
  41 /* Tell the compiler when a conditional or integer expression is
  42    almost always true or almost always false.  */
  43 #ifndef HAVE_BUILTIN_EXPECT
  44 # define __builtin_expect(expr, val) (expr)
  45 #endif
  46
  47 /* Separator in PATH like lists of pathnames.  */
  48 #if ((defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__) || defined __EMX__ || defined __DJGPP__
  49   /* Win32, OS/2, DOS */
  50 # define PATH_SEPARATOR ';'
  51 #else
  52   /* Unix */
  53 # define PATH_SEPARATOR ':'
  54 #endif
  55
  56 /* Encoding of locale name parts.  */
  57 #define XPG_NORM_CODESET        1
  58 #define XPG_CODESET             2
  59 #define XPG_TERRITORY           4
  60 #define XPG_MODIFIER            8
  61
  62
  63 struct loaded_l10nfile
  64 {
  65   const char *filename;
  66   int decided;
  67
  68   const void *data;
  69
  70   struct loaded_l10nfile *next;
  71   struct loaded_l10nfile *successor[1];
  72 };
  73
  74
  75 /* Normalize codeset name.  There is no standard for the codeset
  76    names.  Normalization allows the user to use any of the common
  77    names.  The return value is dynamically allocated and has to be
  78    freed by the caller.  */
  79 extern const char *_nl_normalize_codeset (const char *codeset,
  80                                           size_t name_len);
  81
  82 /* Lookup a locale dependent file.
  83    *L10NFILE_LIST denotes a pool of lookup results of locale dependent
  84    files of the same kind, sorted in decreasing order of ->filename.
  85    DIRLIST and DIRLIST_LEN are an argz list of directories in which to
  86    look, containing at least one directory (i.e. DIRLIST_LEN > 0).
  87    MASK, LANGUAGE, TERRITORY, CODESET, NORMALIZED_CODESET, MODIFIER
  88    are the pieces of the locale name, as produced by _nl_explode_name().
  89    FILENAME is the filename suffix.
  90    The return value is the lookup result, either found in *L10NFILE_LIST,
  91    or - if DO_ALLOCATE is nonzero - freshly allocated, or possibly NULL.
  92    If the return value is non-NULL, it is added to *L10NFILE_LIST, and
  93    its ->next field denotes the chaining inside *L10NFILE_LIST, and
  94    furthermore its ->successor[] field contains a list of other lookup
  95    results from which this lookup result inherits.  */
  96 extern struct loaded_l10nfile *
  97 _nl_make_l10nflist (struct loaded_l10nfile **l10nfile_list,
  98                     const char *dirlist, size_t dirlist_len, int mask,
  99                     const char *language, const char *territory,
 100                     const char *codeset, const char *normalized_codeset,
 101                     const char *modifier,
 102                     const char *filename, int do_allocate);
 103
 104 /* Lookup the real locale name for a locale alias NAME, or NULL if
 105    NAME is not a locale alias (but possibly a real locale name).
 106    The return value is statically allocated and must not be freed.  */
 107 /* Part of the libintl ABI only for the sake of the gettext.m4 macro.  */
 108 extern LIBINTL_DLL_EXPORTED const char *_nl_expand_alias (const char *name);
 109
 110 /* Split a locale name NAME into its pieces: language, modifier,
 111    territory, codeset.
 112    NAME gets destructively modified: NUL bytes are inserted here and
 113    there.  *LANGUAGE gets assigned NAME.  Each of *MODIFIER, *TERRITORY,
 114    *CODESET gets assigned either a pointer into the old NAME string, or
 115    NULL.  *NORMALIZED_CODESET gets assigned the expanded *CODESET, if it
 116    is different from *CODESET; this one is dynamically allocated and has
 117    to be freed by the caller.
 118    The return value is a bitmask, where each bit corresponds to one
 119    filled-in value:
 120      XPG_MODIFIER                for *MODIFIER,
 121      XPG_TERRITORY               for *TERRITORY,
 122      XPG_CODESET                 for *CODESET,
 123      XPG_NORM_CODESET            for *NORMALIZED_CODESET.
 124  */
 125 extern int _nl_explode_name (char *name, const char **language,
 126                              const char **modifier, const char **territory,
 127                              const char **codeset,
 128                              const char **normalized_codeset);
 129
 130 #endif  /* loadinfo.h */