intl/gettextP.h

   1 /* Header describing internals of libintl library.
   2    Copyright (C) 1995-1999, 2000, 2001 Free Software Foundation, Inc.
   3    Written by Ulrich Drepper <drepper@cygnus.com>, 1995.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Library General Public License as
   7    published by the Free Software Foundation; either version 2 of the
   8    License, or (at your option) any later version.
   9
  10    The GNU C Library 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 the GNU C Library; see the file COPYING.LIB.  If not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 02111-1307, USA.  */
  19
  20 #ifndef _GETTEXTP_H
  21 #define _GETTEXTP_H
  22
  23 #include <stddef.h>             /* Get size_t.  */
  24
  25 #ifdef _LIBC
  26 # include "../iconv/gconv_int.h"
  27 #else
  28 # if HAVE_ICONV
  29 #  include <iconv.h>
  30 # endif
  31 #endif
  32
  33 #include "loadinfo.h"
  34
  35 #include "gettext.h"            /* Get nls_uint32.  */
  36
  37 /* @@ end of prolog @@ */
  38
  39 #ifndef PARAMS
  40 # if __STDC__
  41 #  define PARAMS(args) args
  42 # else
  43 #  define PARAMS(args) ()
  44 # endif
  45 #endif
  46
  47 #ifndef internal_function
  48 # define internal_function
  49 #endif
  50
  51 /* Tell the compiler when a conditional or integer expression is
  52    almost always true or almost always false.  */
  53 #ifndef HAVE_BUILTIN_EXPECT
  54 # define __builtin_expect(expr, val) (expr)
  55 #endif
  56
  57 #ifndef W
  58 # define W(flag, data) ((flag) ? SWAP (data) : (data))
  59 #endif
  60
  61
  62 #ifdef _LIBC
  63 # include <byteswap.h>
  64 # define SWAP(i) bswap_32 (i)
  65 #else
  66 static nls_uint32 SWAP PARAMS ((nls_uint32 i));
  67
  68 static inline nls_uint32
  69 SWAP (i)
  70      nls_uint32 i;
  71 {
  72   return (i << 24) | ((i & 0xff00) << 8) | ((i >> 8) & 0xff00) | (i >> 24);
  73 }
  74 #endif
  75
  76
  77 /* This is the representation of the expressions to determine the
  78    plural form.  */
  79 struct expression
  80 {
  81   int nargs;                    /* Number of arguments.  */
  82   enum operator
  83   {
  84     /* Without arguments:  */
  85     var,                        /* The variable "n".  */
  86     num,                        /* Decimal number.  */
  87     /* Unary operators:  */
  88     lnot,                       /* Logical NOT.  */
  89     /* Binary operators:  */
  90     mult,                       /* Multiplication.  */
  91     divide,                     /* Division.  */
  92     module,                     /* Module operation.  */
  93     plus,                       /* Addition.  */
  94     minus,                      /* Subtraction.  */
  95     less_than,                  /* Comparison.  */
  96     greater_than,               /* Comparison.  */
  97     less_or_equal,              /* Comparison.  */
  98     greater_or_equal,           /* Comparison.  */
  99     equal,                      /* Comparision for equality.  */
 100     not_equal,                  /* Comparision for inequality.  */
 101     land,                       /* Logical AND.  */
 102     lor,                        /* Logical OR.  */
 103     /* Ternary operators:  */
 104     qmop                        /* Question mark operator.  */
 105   } operation;
 106   union
 107   {
 108     unsigned long int num;      /* Number value for `num'.  */
 109     struct expression *args[3]; /* Up to three arguments.  */
 110   } val;
 111 };
 112
 113 /* This is the data structure to pass information to the parser and get
 114    the result in a thread-safe way.  */
 115 struct parse_args
 116 {
 117   const char *cp;
 118   struct expression *res;
 119 };
 120
 121
 122 /* The representation of an opened message catalog.  */
 123 struct loaded_domain
 124 {
 125   const char *data;
 126   int use_mmap;
 127   size_t mmap_size;
 128   int must_swap;
 129   nls_uint32 nstrings;
 130   struct string_desc *orig_tab;
 131   struct string_desc *trans_tab;
 132   nls_uint32 hash_size;
 133   nls_uint32 *hash_tab;
 134 #ifdef _LIBC
 135   __gconv_t conv;
 136 #else
 137 # if HAVE_ICONV
 138   iconv_t conv;
 139 # endif
 140 #endif
 141   char **conv_tab;
 142
 143   struct expression *plural;
 144   unsigned long int nplurals;
 145 };
 146
 147 /* We want to allocate a string at the end of the struct.  But ISO C
 148    doesn't allow zero sized arrays.  */
 149 #ifdef __GNUC__
 150 # define ZERO 0
 151 #else
 152 # define ZERO 1
 153 #endif
 154
 155 /* A set of settings bound to a message domain.  Used to store settings
 156    from bindtextdomain() and bind_textdomain_codeset().  */
 157 struct binding
 158 {
 159   struct binding *next;
 160   char *dirname;
 161   char *codeset;
 162   char domainname[ZERO];
 163 };
 164
 165 /* A counter which is incremented each time some previous translations
 166    become invalid.
 167    This variable is part of the external ABI of the GNU libintl.  */
 168 extern int _nl_msg_cat_cntr;
 169
 170 struct loaded_l10nfile *_nl_find_domain PARAMS ((const char *__dirname,
 171                                                  char *__locale,
 172                                                  const char *__domainname,
 173                                               struct binding *__domainbinding))
 174      internal_function;
 175 void _nl_load_domain PARAMS ((struct loaded_l10nfile *__domain))
 176      internal_function;
 177 void _nl_unload_domain PARAMS ((struct loaded_domain *__domain))
 178      internal_function;
 179
 180 #ifdef _LIBC
 181 extern char *__gettext PARAMS ((const char *__msgid));
 182 extern char *__dgettext PARAMS ((const char *__domainname,
 183                                  const char *__msgid));
 184 extern char *__dcgettext PARAMS ((const char *__domainname,
 185                                   const char *__msgid, int __category));
 186 extern char *__ngettext PARAMS ((const char *__msgid1, const char *__msgid2,
 187                                  unsigned long int __n));
 188 extern char *__dngettext PARAMS ((const char *__domainname,
 189                                   const char *__msgid1, const char *__msgid2,
 190                                   unsigned long int n));
 191 extern char *__dcngettext PARAMS ((const char *__domainname,
 192                                    const char *__msgid1, const char *__msgid2,
 193                                    unsigned long int __n, int __category));
 194 extern char *__dcigettext PARAMS ((const char *__domainname,
 195                                    const char *__msgid1, const char *__msgid2,
 196                                    int __plural, unsigned long int __n,
 197                                    int __category));
 198 extern char *__textdomain PARAMS ((const char *__domainname));
 199 extern char *__bindtextdomain PARAMS ((const char *__domainname,
 200                                        const char *__dirname));
 201 extern char *__bind_textdomain_codeset PARAMS ((const char *__domainname,
 202                                                 const char *__codeset));
 203 #else
 204 extern char *gettext__ PARAMS ((const char *__msgid));
 205 extern char *dgettext__ PARAMS ((const char *__domainname,
 206                                  const char *__msgid));
 207 extern char *dcgettext__ PARAMS ((const char *__domainname,
 208                                   const char *__msgid, int __category));
 209 extern char *ngettext__ PARAMS ((const char *__msgid1, const char *__msgid2,
 210                                  unsigned long int __n));
 211 extern char *dngettext__ PARAMS ((const char *__domainname,
 212                                   const char *__msgid1, const char *__msgid2,
 213                                   unsigned long int __n));
 214 extern char *dcngettext__ PARAMS ((const char *__domainname,
 215                                    const char *__msgid1, const char *__msgid2,
 216                                    unsigned long int __n, int __category));
 217 extern char *dcigettext__ PARAMS ((const char *__domainname,
 218                                    const char *__msgid1, const char *__msgid2,
 219                                    int __plural, unsigned long int __n,
 220                                    int __category));
 221 extern char *textdomain__ PARAMS ((const char *__domainname));
 222 extern char *bindtextdomain__ PARAMS ((const char *__domainname,
 223                                        const char *__dirname));
 224 extern char *bind_textdomain_codeset__ PARAMS ((const char *__domainname,
 225                                                 const char *__codeset));
 226 #endif
 227
 228 #ifdef _LIBC
 229 extern void __gettext_free_exp PARAMS ((struct expression *exp))
 230      internal_function;
 231 extern int __gettextparse PARAMS ((void *arg));
 232 #else
 233 extern void gettext_free_exp__ PARAMS ((struct expression *exp))
 234      internal_function;
 235 extern int gettextparse__ PARAMS ((void *arg));
 236 #endif
 237
 238 /* @@ begin of epilog @@ */
 239
 240 #endif /* gettextP.h  */