intl/gettext.h

   1 /* Internal header for GNU gettext internationalization functions.
   2    Copyright (C) 1995, 1997, 2000, 2001 Free Software Foundation, Inc.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Library General Public License as
   6    published by the Free Software Foundation; either version 2 of the
   7    License, or (at your option) any later version.
   8
   9    The GNU C Library 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 GNU
  12    Library General Public License for more details.
  13
  14    You should have received a copy of the GNU Library General Public
  15    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  16    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17    Boston, MA 02111-1307, USA.  */
  18
  19 #ifndef _GETTEXT_H
  20 #define _GETTEXT_H 1
  21
  22 #if HAVE_LIMITS_H || _LIBC
  23 # include <limits.h>
  24 #endif
  25
  26 /* @@ end of prolog @@ */
  27
  28 /* The magic number of the GNU message catalog format.  */
  29 #define _MAGIC 0x950412de
  30 #define _MAGIC_SWAPPED 0xde120495
  31
  32 /* Revision number of the currently used .mo (binary) file format.  */
  33 #define MO_REVISION_NUMBER 0
  34
  35 /* The following contortions are an attempt to use the C preprocessor
  36    to determine an unsigned integral type that is 32 bits wide.  An
  37    alternative approach is to use autoconf's AC_CHECK_SIZEOF macro, but
  38    as of version autoconf-2.13, the AC_CHECK_SIZEOF macro doesn't work
  39    when cross-compiling.  */
  40
  41 #if __STDC__
  42 # define UINT_MAX_32_BITS 4294967295U
  43 #else
  44 # define UINT_MAX_32_BITS 0xFFFFFFFF
  45 #endif
  46
  47 /* If UINT_MAX isn't defined, assume it's a 32-bit type.
  48    This should be valid for all systems GNU cares about because
  49    that doesn't include 16-bit systems, and only modern systems
  50    (that certainly have <limits.h>) have 64+-bit integral types.  */
  51
  52 #ifndef UINT_MAX
  53 # define UINT_MAX UINT_MAX_32_BITS
  54 #endif
  55
  56 #if UINT_MAX == UINT_MAX_32_BITS
  57 typedef unsigned nls_uint32;
  58 #else
  59 # if USHRT_MAX == UINT_MAX_32_BITS
  60 typedef unsigned short nls_uint32;
  61 # else
  62 #  if ULONG_MAX == UINT_MAX_32_BITS
  63 typedef unsigned long nls_uint32;
  64 #  else
  65   /* The following line is intended to throw an error.  Using #error is
  66      not portable enough.  */
  67   "Cannot determine unsigned 32-bit data type."
  68 #  endif
  69 # endif
  70 #endif
  71
  72
  73 /* Header for binary .mo file format.  */
  74 struct mo_file_header
  75 {
  76   /* The magic number.  */
  77   nls_uint32 magic;
  78   /* The revision number of the file format.  */
  79   nls_uint32 revision;
  80   /* The number of strings pairs.  */
  81   nls_uint32 nstrings;
  82   /* Offset of table with start offsets of original strings.  */
  83   nls_uint32 orig_tab_offset;
  84   /* Offset of table with start offsets of translation strings.  */
  85   nls_uint32 trans_tab_offset;
  86   /* Size of hashing table.  */
  87   nls_uint32 hash_tab_size;
  88   /* Offset of first hashing entry.  */
  89   nls_uint32 hash_tab_offset;
  90 };
  91
  92 struct string_desc
  93 {
  94   /* Length of addressed string.  */
  95   nls_uint32 length;
  96   /* Offset of string in file.  */
  97   nls_uint32 offset;
  98 };
  99
 100 /* @@ begin of epilog @@ */
 101
 102 #endif  /* gettext.h  */