1 /* Description of GNU message catalog format: general file layout. 2 Copyright (C) 1995, 1997, 2000-2002, 2004 Free Software Foundation, Inc. 3 4 This program is free software; you can redistribute it and/or modify it 5 under the terms of the GNU Library General Public License as published 6 by 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 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 this program; if not, write to the Free Software 16 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 17 USA. */ 18 19 #ifndef _GETTEXT_H 20 #define _GETTEXT_H 1 21 22 #include <limits.h> 23 24 /* @@ end of prolog @@ */ 25 26 /* The magic number of the GNU message catalog format. */ 27 #define _MAGIC 0x950412de 28 #define _MAGIC_SWAPPED 0xde120495 29 30 /* Revision number of the currently used .mo (binary) file format. */ 31 #define MO_REVISION_NUMBER 0 32 #define MO_REVISION_NUMBER_WITH_SYSDEP_I 1 33 34 /* The following contortions are an attempt to use the C preprocessor 35 to determine an unsigned integral type that is 32 bits wide. An 36 alternative approach is to use autoconf's AC_CHECK_SIZEOF macro, but 37 as of version autoconf-2.13, the AC_CHECK_SIZEOF macro doesn't work 38 when cross-compiling. */ 39 40 #if __STDC__ 41 # define UINT_MAX_32_BITS 4294967295U 42 #else 43 # define UINT_MAX_32_BITS 0xFFFFFFFF 44 #endif 45 46 /* If UINT_MAX isn't defined, assume it's a 32-bit type. 47 This should be valid for all systems GNU cares about because 48 that doesn't include 16-bit systems, and only modern systems 49 (that certainly have <limits.h>) have 64+-bit integral types. */ 50 51 #ifndef UINT_MAX 52 # define UINT_MAX UINT_MAX_32_BITS 53 #endif 54 55 #if UINT_MAX == UINT_MAX_32_BITS 56 typedef unsigned nls_uint32; 57 #else 58 # if USHRT_MAX == UINT_MAX_32_BITS 59 typedef unsigned short nls_uint32; 60 # else 61 # if ULONG_MAX == UINT_MAX_32_BITS 62 typedef unsigned long nls_uint32; 63 # else 64 /* The following line is intended to throw an error. Using #error is 65 not portable enough. */ 66 "Cannot determine unsigned 32-bit data type." 67 # endif 68 # endif 69 #endif 70 71 72 /* Header for binary .mo file format. */ 73 struct mo_file_header 74 { 75 /* The magic number. */ 76 nls_uint32 magic; 77 /* The revision number of the file format. */ 78 nls_uint32 revision; 79 80 /* The following are only used in .mo files with major revision 0 or 1. */ 81 82 /* The number of strings pairs. */ 83 nls_uint32 nstrings; 84 /* Offset of table with start offsets of original strings. */ 85 nls_uint32 orig_tab_offset; 86 /* Offset of table with start offsets of translated strings. */ 87 nls_uint32 trans_tab_offset; 88 /* Size of hash table. */ 89 nls_uint32 hash_tab_size; 90 /* Offset of first hash table entry. */ 91 nls_uint32 hash_tab_offset; 92 93 /* The following are only used in .mo files with minor revision >= 1. */ 94 95 /* The number of system dependent segments. */ 96 nls_uint32 n_sysdep_segments; 97 /* Offset of table describing system dependent segments. */ 98 nls_uint32 sysdep_segments_offset; 99 /* The number of system dependent strings pairs. */ 100 nls_uint32 n_sysdep_strings; 101 /* Offset of table with start offsets of original sysdep strings. */ 102 nls_uint32 orig_sysdep_tab_offset; 103 /* Offset of table with start offsets of translated sysdep strings. */ 104 nls_uint32 trans_sysdep_tab_offset; 105 }; 106 107 /* Descriptor for static string contained in the binary .mo file. */ 108 struct string_desc 109 { 110 /* Length of addressed string, not including the trailing NUL. */ 111 nls_uint32 length; 112 /* Offset of string in file. */ 113 nls_uint32 offset; 114 }; 115 116 /* The following are only used in .mo files with minor revision >= 1. */ 117 118 /* Descriptor for system dependent string segment. */ 119 struct sysdep_segment 120 { 121 /* Length of addressed string, including the trailing NUL. */ 122 nls_uint32 length; 123 /* Offset of string in file. */ 124 nls_uint32 offset; 125 }; 126 127 /* Descriptor for system dependent string. */ 128 struct sysdep_string 129 { 130 /* Offset of static string segments in file. */ 131 nls_uint32 offset; 132 /* Alternating sequence of static and system dependent segments. 133 The last segment is a static segment, including the trailing NUL. */ 134 struct segment_pair 135 { 136 /* Size of static segment. */ 137 nls_uint32 segsize; 138 /* Reference to system dependent string segment, or ~0 at the end. */ 139 nls_uint32 sysdepref; 140 } segments[1]; 141 }; 142 143 /* Marker for the end of the segments[] array. This has the value 0xFFFFFFFF, 144 regardless whether 'int' is 16 bit, 32 bit, or 64 bit. */ 145 #define SEGMENTS_END ((nls_uint32) ~0) 146 147 /* @@ begin of epilog @@ */ 148 149 #endif /* gettext.h */ 150