Disk ARchive  2.5.13
Full featured and portable backup and archiving tool
integers.hpp
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1 /*********************************************************************/
2 // dar - disk archive - a backup/restoration program
3 // Copyright (C) 2002-2052 Denis Corbin
4 //
5 // This program is free software; you can redistribute it and/or
6 // modify it under the terms of the GNU General Public License
7 // as published by the Free Software Foundation; either version 2
8 // of the License, or (at your option) any later version.
9 //
10 // This program is distributed in the hope that it will be useful,
11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 // GNU General Public License for more details.
14 //
15 // You should have received a copy of the GNU General Public License
16 // along with this program; if not, write to the Free Software
17 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18 //
19 // to contact the author : http://dar.linux.free.fr/email.html
20 /*********************************************************************/
21 
25 
26 
27 #ifndef INTEGERS_HPP
28 #define INTEGERS_HPP
29 
30 #include "../my_config.h"
31 #include <string>
32 
35 
36 #ifndef OS_BITS
37 
38 #if HAVE_INTTYPES_H
39 extern "C"
40 {
41 #if HAVE_INTTYPES_H
42 #include <inttypes.h>
43 #endif
44 #if HAVE_LIMITS_H
45 #include <limits.h>
46 #endif
47 } // end extern "C"
48 
49 namespace libdar
50 {
51  typedef unsigned char U_8;
52  typedef uint16_t U_16;
53  typedef uint32_t U_32;
54  typedef uint64_t U_64;
55  typedef size_t U_I;
56  // configure will define size_t as "unsigned int" if it not defined by system headers
57  // thus using U_I we are sure we can compare buffer sizes with SSIZE_MAX
58  typedef signed char S_8;
59  typedef int16_t S_16;
60  typedef int32_t S_32;
61  typedef int64_t S_64;
62  typedef signed int S_I;
63 
64 }
65 
66 #else // HAVE_INTTYPES_H
67 #error "Cannot determine interger types, use --enable-os-bits=... with the 'configure' script according to your system's CPU register size"
68 #endif // HAVE_INTTYPES_H
69 
70 #else // OS_BITS is defined
71 #if OS_BITS == 32
72 
73 namespace libdar
74 {
75  typedef unsigned char U_8;
76  typedef unsigned short U_16;
77  typedef unsigned long U_32;
78  typedef unsigned long long U_64;
79  typedef size_t U_I;
80  typedef signed char S_8;
81  typedef signed short S_16;
82  typedef signed long S_32;
83  typedef signed long long S_64;
84  typedef signed int S_I;
85 
86 }
87 
88 #else // OS_BITS != 32
89 #if OS_BITS == 64
90 
91 namespace libdar
92 {
93  typedef unsigned char U_8;
94  typedef unsigned short U_16;
95  typedef unsigned int U_32;
96  typedef unsigned long long U_64;
97  typedef size_t U_I;
98  typedef signed char S_8;
99  typedef signed short S_16;
100  typedef signed int S_32;
101  typedef signed long long S_64;
102  typedef signed int S_I;
103 
104 }
105 
106 #else // OS_BITS != 32 and OS_BITS != 64
107 #error "unknown value given to --enable-os-bits=... check the 'configure' script arguments"
108  // unknown OS_BITS value ! use --enable-os-bits=... option to configure script
109  //
110  // the previous line should not compile, this is the expected behaviour
111 
112 #endif // OS_BITS == 64
113 #endif // OS_BITS == 32
114 #endif // OS_BITS not defined
115 
116 namespace libdar
117 {
118 
119 
121 
123  void integer_check();
124 
125 
127 
131 
132 }
133 
135 
136 
137 #endif // header file multiple inclusion protection
bool integers_system_is_big_endian()
returns true if the system is big endian, false else
void integer_check()
checks sign and width of integer types
libdar namespace encapsulate all libdar symbols
Definition: archive.hpp:47