| 1 | /* Description of GNU message catalog format: general file layout. |
| 2 | Copyright (C) 1995, 1997, 2000-2002 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, |
| 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 | |
| 33 | /* The following contortions are an attempt to use the C preprocessor |
| 34 | to determine an unsigned integral type that is 32 bits wide. An |
| 35 | alternative approach is to use autoconf's AC_CHECK_SIZEOF macro, but |
| 36 | as of version autoconf-2.13, the AC_CHECK_SIZEOF macro doesn't work |
| 37 | when cross-compiling. */ |
| 38 | |
| 39 | #if __STDC__ |
| 40 | # define UINT_MAX_32_BITS 4294967295U |
| 41 | #else |
| 42 | # define UINT_MAX_32_BITS 0xFFFFFFFF |
| 43 | #endif |
| 44 | |
| 45 | /* If UINT_MAX isn't defined, assume it's a 32-bit type. |
| 46 | This should be valid for all systems GNU cares about because |
| 47 | that doesn't include 16-bit systems, and only modern systems |
| 48 | (that certainly have <limits.h>) have 64+-bit integral types. */ |
| 49 | |
| 50 | #ifndef UINT_MAX |
| 51 | # define UINT_MAX UINT_MAX_32_BITS |
| 52 | #endif |
| 53 | |
| 54 | #if UINT_MAX == UINT_MAX_32_BITS |
| 55 | typedef unsigned nls_uint32; |
| 56 | #else |
| 57 | # if USHRT_MAX == UINT_MAX_32_BITS |
| 58 | typedef unsigned short nls_uint32; |
| 59 | # else |
| 60 | # if ULONG_MAX == UINT_MAX_32_BITS |
| 61 | typedef unsigned long nls_uint32; |
| 62 | # else |
| 63 | /* The following line is intended to throw an error. Using #error is |
| 64 | not portable enough. */ |
| 65 | "Cannot determine unsigned 32-bit data type." |
| 66 | # endif |
| 67 | # endif |
| 68 | #endif |
| 69 | |
| 70 | |
| 71 | /* Header for binary .mo file format. */ |
| 72 | struct mo_file_header |
| 73 | { |
| 74 | /* The magic number. */ |
| 75 | nls_uint32 magic; |
| 76 | /* The revision number of the file format. */ |
| 77 | nls_uint32 revision; |
| 78 | |
| 79 | /* The following are only used in .mo files with major revision 0. */ |
| 80 | |
| 81 | /* The number of strings pairs. */ |
| 82 | nls_uint32 nstrings; |
| 83 | /* Offset of table with start offsets of original strings. */ |
| 84 | nls_uint32 orig_tab_offset; |
| 85 | /* Offset of table with start offsets of translated strings. */ |
| 86 | nls_uint32 trans_tab_offset; |
| 87 | /* Size of hash table. */ |
| 88 | nls_uint32 hash_tab_size; |
| 89 | /* Offset of first hash table entry. */ |
| 90 | nls_uint32 hash_tab_offset; |
| 91 | |
| 92 | /* The following are only used in .mo files with minor revision >= 1. */ |
| 93 | |
| 94 | /* The number of system dependent segments. */ |
| 95 | nls_uint32 n_sysdep_segments; |
| 96 | /* Offset of table describing system dependent segments. */ |
| 97 | nls_uint32 sysdep_segments_offset; |
| 98 | /* The number of system dependent strings pairs. */ |
| 99 | nls_uint32 n_sysdep_strings; |
| 100 | /* Offset of table with start offsets of original sysdep strings. */ |
| 101 | nls_uint32 orig_sysdep_tab_offset; |
| 102 | /* Offset of table with start offsets of translated sysdep strings. */ |
| 103 | nls_uint32 trans_sysdep_tab_offset; |
| 104 | }; |
| 105 | |
| 106 | /* Descriptor for static string contained in the binary .mo file. */ |
| 107 | struct string_desc |
| 108 | { |
| 109 | /* Length of addressed string, not including the trailing NUL. */ |
| 110 | nls_uint32 length; |
| 111 | /* Offset of string in file. */ |
| 112 | nls_uint32 offset; |
| 113 | }; |
| 114 | |
| 115 | /* The following are only used in .mo files with minor revision >= 1. */ |
| 116 | |
| 117 | /* Descriptor for system dependent string segment. */ |
| 118 | struct sysdep_segment |
| 119 | { |
| 120 | /* Length of addressed string, including the trailing NUL. */ |
| 121 | nls_uint32 length; |
| 122 | /* Offset of string in file. */ |
| 123 | nls_uint32 offset; |
| 124 | }; |
| 125 | |
| 126 | /* Descriptor for system dependent string. */ |
| 127 | struct sysdep_string |
| 128 | { |
| 129 | /* Offset of static string segments in file. */ |
| 130 | nls_uint32 offset; |
| 131 | /* Alternating sequence of static and system dependent segments. |
| 132 | The last segment is a static segment, including the trailing NUL. */ |
| 133 | struct segment_pair |
| 134 | { |
| 135 | /* Size of static segment. */ |
| 136 | nls_uint32 segsize; |
| 137 | /* Reference to system dependent string segment, or ~0 at the end. */ |
| 138 | nls_uint32 sysdepref; |
| 139 | } segments[1]; |
| 140 | }; |
| 141 | |
| 142 | /* Marker for the end of the segments[] array. This has the value 0xFFFFFFFF, |
| 143 | regardless whether 'int' is 16 bit, 32 bit, or 64 bit. */ |
| 144 | #define SEGMENTS_END ((nls_uint32) ~0) |
| 145 | |
| 146 | /* @@ begin of epilog @@ */ |
| 147 | |
| 148 | #endif /* gettext.h */ |