1 /*
2 Copyright (C) 2001-2006, William Joseph.
3 All Rights Reserved.
4
5 This file is part of GtkRadiant.
6
7 GtkRadiant 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 2 of the License, or
10 (at your option) any later version.
11
12 GtkRadiant 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 GtkRadiant; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #if !defined(INCLUDED_BYTESTREAMUTILS_H)
23 #define INCLUDED_BYTESTREAMUTILS_H
24
25 #include <algorithm>
26
27 #if defined(_MSC_VER)
28
29 typedef signed short int16_t;
30 typedef unsigned short uint16_t;
31 typedef signed int int32_t;
32 typedef unsigned int uint32_t;
33
34 #else
35
36 #define _ISOC9X_SOURCE 1
37 #define _ISOC99_SOURCE 1
38
39 #define __USE_ISOC9X 1
40 #define __USE_ISOC99 1
41
42 #include <stdint.h>
43
44 #endif
45
46
47 template<typename InputStreamType, typename Type>
istream_read_little_endian(InputStreamType & istream,Type & value)48 inline void istream_read_little_endian(InputStreamType& istream, Type& value)
49 {
50 istream.read(reinterpret_cast<typename InputStreamType::byte_type*>(&value), sizeof(Type));
51 #if defined(__BIG_ENDIAN__)
52 std::reverse(reinterpret_cast<typename InputStreamType::byte_type*>(&value), reinterpret_cast<typename InputStreamType::byte_type*>(&value) + sizeof(Type));
53 #endif
54 }
55
56 template<typename InputStreamType, typename Type>
istream_read_big_endian(InputStreamType & istream,Type & value)57 inline void istream_read_big_endian(InputStreamType& istream, Type& value)
58 {
59 istream.read(reinterpret_cast<typename InputStreamType::byte_type*>(&value), sizeof(Type));
60 #if !defined(__BIG_ENDIAN__)
61 std::reverse(reinterpret_cast<typename InputStreamType::byte_type*>(&value), reinterpret_cast<typename InputStreamType::byte_type*>(&value) + sizeof(Type));
62 #endif
63 }
64
65 template<typename InputStreamType>
istream_read_byte(InputStreamType & istream,typename InputStreamType::byte_type & b)66 inline void istream_read_byte(InputStreamType& istream, typename InputStreamType::byte_type& b)
67 {
68 istream.read(&b, 1);
69 }
70
71
72 template<typename InputStreamType>
istream_read_int16_le(InputStreamType & istream)73 inline int16_t istream_read_int16_le(InputStreamType& istream)
74 {
75 int16_t value;
76 istream_read_little_endian(istream, value);
77 return value;
78 }
79
80 template<typename InputStreamType>
istream_read_uint16_le(InputStreamType & istream)81 inline uint16_t istream_read_uint16_le(InputStreamType& istream)
82 {
83 uint16_t value;
84 istream_read_little_endian(istream, value);
85 return value;
86 }
87
88 template<typename InputStreamType>
istream_read_int32_le(InputStreamType & istream)89 inline int32_t istream_read_int32_le(InputStreamType& istream)
90 {
91 int32_t value;
92 istream_read_little_endian(istream, value);
93 return value;
94 }
95
96 template<typename InputStreamType>
istream_read_uint32_le(InputStreamType & istream)97 inline uint32_t istream_read_uint32_le(InputStreamType& istream)
98 {
99 uint32_t value;
100 istream_read_little_endian(istream, value);
101 return value;
102 }
103
104 template<typename InputStreamType>
istream_read_float32_le(InputStreamType & istream)105 inline float istream_read_float32_le(InputStreamType& istream)
106 {
107 float value;
108 istream_read_little_endian(istream, value);
109 return value;
110 }
111
112 template<typename InputStreamType>
istream_read_byte(InputStreamType & istream)113 inline typename InputStreamType::byte_type istream_read_byte(InputStreamType& istream)
114 {
115 typename InputStreamType::byte_type b;
116 istream.read(&b, sizeof(typename InputStreamType::byte_type));
117 return b;
118 }
119
120 #endif
121