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
58typedef unsigned nls_uint32;
59#else
60# if USHRT_MAX == UINT_MAX_32_BITS
61typedef unsigned short nls_uint32;
62# else
63#  if ULONG_MAX == UINT_MAX_32_BITS
64typedef 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.  */
75struct 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.  */
110struct 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.  */
121struct 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.  */
130struct 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  */
152