src/intl/gettext/gettext.h

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