1/* gmo.h - Description of GNU message catalog format: general file layout. */ 2 3/* Copyright (C) 1995, 1997, 2000-2002, 2005-2009 Free Software Foundation, Inc. 4 5 This file is part of GNU Bash. 6 7 Bash is free software: you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation, either version 3 of the License, or 10 (at your option) any later version. 11 12 Bash is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with Bash. If not, see <http://www.gnu.org/licenses/>. 19*/ 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 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 57typedef unsigned nls_uint32; 58#else 59# if USHRT_MAX == UINT_MAX_32_BITS 60typedef unsigned short nls_uint32; 61# else 62# if ULONG_MAX == UINT_MAX_32_BITS 63typedef 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. */ 74struct 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 81 /* The following are only used in .mo files with major revision 0. */ 82 83 /* The number of strings pairs. */ 84 nls_uint32 nstrings; 85 /* Offset of table with start offsets of original strings. */ 86 nls_uint32 orig_tab_offset; 87 /* Offset of table with start offsets of translated strings. */ 88 nls_uint32 trans_tab_offset; 89 /* Size of hash table. */ 90 nls_uint32 hash_tab_size; 91 /* Offset of first hash table entry. */ 92 nls_uint32 hash_tab_offset; 93 94 /* The following are only used in .mo files with minor revision >= 1. */ 95 96 /* The number of system dependent segments. */ 97 nls_uint32 n_sysdep_segments; 98 /* Offset of table describing system dependent segments. */ 99 nls_uint32 sysdep_segments_offset; 100 /* The number of system dependent strings pairs. */ 101 nls_uint32 n_sysdep_strings; 102 /* Offset of table with start offsets of original sysdep strings. */ 103 nls_uint32 orig_sysdep_tab_offset; 104 /* Offset of table with start offsets of translated sysdep strings. */ 105 nls_uint32 trans_sysdep_tab_offset; 106}; 107 108/* Descriptor for static string contained in the binary .mo file. */ 109struct string_desc 110{ 111 /* Length of addressed string, not including the trailing NUL. */ 112 nls_uint32 length; 113 /* Offset of string in file. */ 114 nls_uint32 offset; 115}; 116 117/* The following are only used in .mo files with minor revision >= 1. */ 118 119/* Descriptor for system dependent string segment. */ 120struct sysdep_segment 121{ 122 /* Length of addressed string, including the trailing NUL. */ 123 nls_uint32 length; 124 /* Offset of string in file. */ 125 nls_uint32 offset; 126}; 127 128/* Descriptor for system dependent string. */ 129struct sysdep_string 130{ 131 /* Offset of static string segments in file. */ 132 nls_uint32 offset; 133 /* Alternating sequence of static and system dependent segments. 134 The last segment is a static segment, including the trailing NUL. */ 135 struct segment_pair 136 { 137 /* Size of static segment. */ 138 nls_uint32 segsize; 139 /* Reference to system dependent string segment, or ~0 at the end. */ 140 nls_uint32 sysdepref; 141 } segments[1]; 142}; 143 144/* Marker for the end of the segments[] array. This has the value 0xFFFFFFFF, 145 regardless whether 'int' is 16 bit, 32 bit, or 64 bit. */ 146#define SEGMENTS_END ((nls_uint32) ~0) 147 148/* @@ begin of epilog @@ */ 149 150#endif /* gettext.h */ 151