1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /*
3 * This file is part of the libcdr project.
4 *
5 * This Source Code Form is subject to the terms of the Mozilla Public
6 * License, v. 2.0. If a copy of the MPL was not distributed with this
7 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 */
9
10 #ifndef __LIBCDR_UTILS_H__
11 #define __LIBCDR_UTILS_H__
12
13 #ifdef HAVE_CONFIG_H
14 #include "config.h"
15 #endif
16
17 #include <math.h>
18 #include <memory>
19 #include <vector>
20
21 #include <boost/cstdint.hpp>
22
23 #include <librevenge-stream/librevenge-stream.h>
24 #include <librevenge/librevenge.h>
25
26 #ifndef M_PI
27 #define M_PI 3.14159265358979323846
28 #endif
29
30 #define CDR_EPSILON 1E-6
31 #define CDR_ALMOST_ZERO(m) (fabs(m) <= CDR_EPSILON)
32
33 #if defined(HAVE_FUNC_ATTRIBUTE_FORMAT)
34 # define CDR_ATTRIBUTE_PRINTF(fmt, arg) __attribute__((__format__(__printf__, fmt, arg)))
35 #else
36 # define CDR_ATTRIBUTE_PRINTF(fmt, arg)
37 #endif
38
39 #if defined(HAVE_CLANG_ATTRIBUTE_FALLTHROUGH)
40 # define CDR_FALLTHROUGH [[clang::fallthrough]]
41 #elif defined(HAVE_GCC_ATTRIBUTE_FALLTHROUGH)
42 # define CDR_FALLTHROUGH __attribute__((fallthrough))
43 #else
44 # define CDR_FALLTHROUGH ((void) 0)
45 #endif
46
47 // do nothing with debug messages in a release compile
48 #ifdef DEBUG
49 namespace libcdr
50 {
51 void debugPrint(const char *format, ...) CDR_ATTRIBUTE_PRINTF(1, 2);
52 }
53 #define CDR_DEBUG_MSG(M) libcdr::debugPrint M
54 #define CDR_DEBUG(M) M
55 #else
56 #define CDR_DEBUG_MSG(M)
57 #define CDR_DEBUG(M)
58 #endif
59
60 namespace libcdr
61 {
62
63 struct CDRDummyDeleter
64 {
operatorCDRDummyDeleter65 void operator()(void *) const {}
66 };
67
68 template<typename T, typename... Args>
make_unique(Args &&...args)69 std::unique_ptr<T> make_unique(Args &&... args)
70 {
71 return std::unique_ptr<T>(new T(std::forward<Args>(args)...));
72 }
73
74 uint8_t readU8(librevenge::RVNGInputStream *input, bool bigEndian=false);
75 uint16_t readU16(librevenge::RVNGInputStream *input, bool bigEndian=false);
76 uint32_t readU32(librevenge::RVNGInputStream *input, bool bigEndian=false);
77 uint64_t readU64(librevenge::RVNGInputStream *input, bool bigEndian=false);
78 int32_t readS32(librevenge::RVNGInputStream *input, bool bigEndian=false);
79 int16_t readS16(librevenge::RVNGInputStream *input, bool bigEndian=false);
80
81 double readDouble(librevenge::RVNGInputStream *input, bool bigEndian=false);
82
83 double readFixedPoint(librevenge::RVNGInputStream *input, bool bigEndian=false);
84
85 unsigned long getLength(librevenge::RVNGInputStream *input);
86 unsigned long getRemainingLength(librevenge::RVNGInputStream *input);
87
88 int cdr_round(double d);
89
90 void writeU16(librevenge::RVNGBinaryData &buffer, const int value);
91 void writeU32(librevenge::RVNGBinaryData &buffer, const int value);
92 void appendCharacters(librevenge::RVNGString &text, std::vector<unsigned char> characters, unsigned short charset);
93 void appendCharacters(librevenge::RVNGString &text, std::vector<unsigned char> characters);
94 void appendUTF8Characters(librevenge::RVNGString &text, std::vector<unsigned char> characters);
95
96 #ifdef DEBUG
97 const char *toFourCC(unsigned value, bool bigEndian=false);
98 #endif
99
100 class EndOfStreamException
101 {
102 };
103
104 class GenericException
105 {
106 };
107
108 class UnknownPrecisionException
109 {
110 };
111
112 class EncodingException
113 {
114 };
115
116 } // namespace libcdr
117
118 #endif // __LIBCDR_UTILS_H__
119 /* vim:set shiftwidth=2 softtabstop=2 expandtab: */
120