gnu/dist/texinfo/intl/gmo.h

   1 /*      $NetBSD$        */
   2
   3 /* Description of GNU message catalog format: general file layout.
   4    Copyright (C) 1995, 1997, 2000-2002, 2004 Free Software Foundation, Inc.
   5
   6    This program is free software; you can redistribute it and/or modify it
   7    under the terms of the GNU Library General Public License as published
   8    by the Free Software Foundation; either version 2, or (at your option)
   9    any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Library General Public License for more details.
  15
  16    You should have received a copy of the GNU Library General Public
  17    License along with this program; if not, write to the Free Software
  18    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  19    USA.  */
  20
  21 #ifndef _GETTEXT_H
  22 #define _GETTEXT_H 1
  23
  24 #include <limits.h>
  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 #define MO_REVISION_NUMBER_WITH_SYSDEP_I 1
  35
  36 /* The following contortions are an attempt to use the C preprocessor
  37    to determine an unsigned integral type that is 32 bits wide.  An
  38    alternative approach is to use autoconf's AC_CHECK_SIZEOF macro, but
  39    as of version autoconf-2.13, the AC_CHECK_SIZEOF macro doesn't work
  40    when cross-compiling.  */
  41
  42 #if __STDC__
  43 # define UINT_MAX_32_BITS 4294967295U
  44 #else
  45 # define UINT_MAX_32_BITS 0xFFFFFFFF
  46 #endif
  47
  48 /* If UINT_MAX isn't defined, assume it's a 32-bit type.
  49    This should be valid for all systems GNU cares about because
  50    that doesn't include 16-bit systems, and only modern systems
  51    (that certainly have <limits.h>) have 64+-bit integral types.  */
  52
  53 #ifndef UINT_MAX
  54 # define UINT_MAX UINT_MAX_32_BITS
  55 #endif
  56
  57 #if UINT_MAX == UINT_MAX_32_BITS
  58 typedef unsigned nls_uint32;
  59 #else
  60 # if USHRT_MAX == UINT_MAX_32_BITS
  61 typedef unsigned short nls_uint32;
  62 # else
  63 #  if ULONG_MAX == UINT_MAX_32_BITS
  64 typedef unsigned long nls_uint32;
  65 #  else
  66   /* The following line is intended to throw an error.  Using #error is
  67      not portable enough.  */
  68   "Cannot determine unsigned 32-bit data type."
  69 #  endif
  70 # endif
  71 #endif
  72
  73
  74 /* Header for binary .mo file format.  */
  75 struct mo_file_header
  76 {
  77   /* The magic number.  */
  78   nls_uint32 magic;
  79   /* The revision number of the file format.  */
  80   nls_uint32 revision;
  81
  82   /* The following are only used in .mo files with major revision 0 or 1.  */
  83
  84   /* The number of strings pairs.  */
  85   nls_uint32 nstrings;
  86   /* Offset of table with start offsets of original strings.  */
  87   nls_uint32 orig_tab_offset;
  88   /* Offset of table with start offsets of translated strings.  */
  89   nls_uint32 trans_tab_offset;
  90   /* Size of hash table.  */
  91   nls_uint32 hash_tab_size;
  92   /* Offset of first hash table entry.  */
  93   nls_uint32 hash_tab_offset;
  94
  95   /* The following are only used in .mo files with minor revision >= 1.  */
  96
  97   /* The number of system dependent segments.  */
  98   nls_uint32 n_sysdep_segments;
  99   /* Offset of table describing system dependent segments.  */
 100   nls_uint32 sysdep_segments_offset;
 101   /* The number of system dependent strings pairs.  */
 102   nls_uint32 n_sysdep_strings;
 103   /* Offset of table with start offsets of original sysdep strings.  */
 104   nls_uint32 orig_sysdep_tab_offset;
 105   /* Offset of table with start offsets of translated sysdep strings.  */
 106   nls_uint32 trans_sysdep_tab_offset;
 107 };
 108
 109 /* Descriptor for static string contained in the binary .mo file.  */
 110 struct string_desc
 111 {
 112   /* Length of addressed string, not including the trailing NUL.  */
 113   nls_uint32 length;
 114   /* Offset of string in file.  */
 115   nls_uint32 offset;
 116 };
 117
 118 /* The following are only used in .mo files with minor revision >= 1.  */
 119
 120 /* Descriptor for system dependent string segment.  */
 121 struct sysdep_segment
 122 {
 123   /* Length of addressed string, including the trailing NUL.  */
 124   nls_uint32 length;
 125   /* Offset of string in file.  */
 126   nls_uint32 offset;
 127 };
 128
 129 /* Descriptor for system dependent string.  */
 130 struct sysdep_string
 131 {
 132   /* Offset of static string segments in file.  */
 133   nls_uint32 offset;
 134   /* Alternating sequence of static and system dependent segments.
 135      The last segment is a static segment, including the trailing NUL.  */
 136   struct segment_pair
 137   {
 138     /* Size of static segment.  */
 139     nls_uint32 segsize;
 140     /* Reference to system dependent string segment, or ~0 at the end.  */
 141     nls_uint32 sysdepref;
 142   } segments[1];
 143 };
 144
 145 /* Marker for the end of the segments[] array.  This has the value 0xFFFFFFFF,
 146    regardless whether 'int' is 16 bit, 32 bit, or 64 bit.  */
 147 #define SEGMENTS_END ((nls_uint32) ~0)
 148
 149 /* @@ begin of epilog @@ */
 150
 151 #endif  /* gettext.h  */