libetonyek_utils.h
Go to the documentation of this file.
1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /*
3 * This file is part of the libetonyek 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 LIBETONYEK_UTILS_H_INCLUDED
11 #define LIBETONYEK_UTILS_H_INCLUDED
12
13 #ifdef HAVE_CONFIG_H
14 #include "config.h"
15 #endif
16
17 #include <cmath>
18 #include <memory>
19 #include <string>
20
21 #include <boost/cstdint.hpp>
22
23 #include <librevenge/librevenge.h>
24 #include <librevenge-stream/librevenge-stream.h>
25
26 #define ETONYEK_EPSILON 1e-9
27 #define ETONYEK_ALMOST_ZERO(x) (std::fabs(x) < ETONYEK_EPSILON)
28
29 #define ETONYEK_NUM_ELEMENTS(array) (sizeof(array) / sizeof((array)[0]))
30
31 #if defined(HAVE_FUNC_ATTRIBUTE_FORMAT)
32 # define ETONYEK_ATTRIBUTE_PRINTF(fmt, arg) __attribute__((__format__(__printf__, fmt, arg)))
33 #else
34 # define ETONYEK_ATTRIBUTE_PRINTF(fmt, arg)
35 #endif
36
37 #if defined(HAVE_CLANG_ATTRIBUTE_FALLTHROUGH)
38 # define ETONYEK_FALLTHROUGH [[clang::fallthrough]]
39 #elif defined(HAVE_GCC_ATTRIBUTE_FALLTHROUGH)
40 # define ETONYEK_FALLTHROUGH __attribute__((fallthrough))
41 #else
42 # define ETONYEK_FALLTHROUGH ((void) 0)
43 #endif
44
45 // do nothing with debug messages in a release compile
46 #ifdef DEBUG
47 namespace libetonyek
48 {
49 void debugPrint(const char *format, ...) ETONYEK_ATTRIBUTE_PRINTF(1, 2);
50 }
51 #define ETONYEK_DEBUG_MSG(M) libetonyek::debugPrint M
52 #define ETONYEK_DEBUG(M) M
53 #else
54 #define ETONYEK_DEBUG_MSG(M)
55 #define ETONYEK_DEBUG(M)
56 #endif
57
58 namespace libetonyek
59 {
60
61 struct IWORKColor;
62 struct IWORKGradient;
63 struct IWORKStroke;
64
65 /* Constants */
66 const double etonyek_half_pi(1.57079632679489661923132169163975144209858469968755291048747229615390820314310449931401741267105853399107404326e+00);
67 const double etonyek_third_pi(1.04719755119659774615421446109316762806572313312503527365831486410260546876206966620934494178070568932738269550e+00);
68 const double etonyek_pi(3.14159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211706798214808651e+00);
69 const double etonyek_two_pi(6.28318530717958647692528676655900576839433879875021164194988918461563281257241799725606965068423413596429617303e+00);
70
71 const double etonyek_root_three(1.73205080756887729352744634150587236694280525381038062805580697945193301690880003708114618675724857567562614142e+00);
72 const double etonyek_root_two(1.41421356237309504880168872420969807856967187537694807317667973799073247846210703885038753432764157273501384623e+00);
73
74 // Apple Numbers timestamp starts from 01 Jan 2001 00:00:00
75 const unsigned ETONYEK_EPOCH_BEGIN(978307200);
76
77 struct EtonyekDummyDeleter
78 {
79 void operator()(void *) {}
80 };
81
82 typedef std::shared_ptr<librevenge::RVNGInputStream> RVNGInputStreamPtr_t;
83
84 uint8_t readU8(const RVNGInputStreamPtr_t &input, bool = false);
85 uint16_t readU16(const RVNGInputStreamPtr_t &input, bool bigEndian=false);
86 uint32_t readU32(const RVNGInputStreamPtr_t &input, bool bigEndian=false);
87 uint64_t readU64(const RVNGInputStreamPtr_t &input, bool bigEndian=false);
88
89 uint64_t readUVar(const RVNGInputStreamPtr_t &input);
90 int64_t readSVar(const RVNGInputStreamPtr_t &input);
91
92 double readDouble(const RVNGInputStreamPtr_t &input);
93 float readFloat(const RVNGInputStreamPtr_t &input);
94
95 unsigned long getLength(const RVNGInputStreamPtr_t &input);
96 unsigned long getRemainingLength(const RVNGInputStreamPtr_t &input);
97
104 bool approxEqual(double x, double y, double eps = ETONYEK_EPSILON);
105
106 template<class T>
107 bool approxEqual(const T &left, const T &right, const double eps = ETONYEK_EPSILON)
108 {
109 assert(left.length() == right.length());
110
111 for (int i = 0; i != left.length(); ++i)
112 {
113 if (!approxEqual(left[i], right[i], eps))
114 return false;
115 }
116 return true;
117 }
118
124 double pt2in(double d);
125
131 double deg2rad(double value);
132
138 double rad2deg(double value);
139
140 librevenge::RVNGString makeColor(const IWORKColor &color);
143 librevenge::RVNGString makeColor(const IWORKGradient &gradient);
144
145 void writeBorder(const IWORKStroke &stroke, const char *name, librevenge::RVNGPropertyList &props);
146
147 class EndOfStreamException
148 {
149 };
150
151 class GenericException
152 {
153 };
154
155 } // namespace libetonyek
156
157 #endif // LIBETONYEK_UTILS_H_INCLUDED
158
159 /* vim:set shiftwidth=2 softtabstop=2 expandtab: */
libetonyek
Definition: IWORKBezierElement.cpp:20
ETONYEK_ATTRIBUTE_PRINTF
#define ETONYEK_ATTRIBUTE_PRINTF(fmt, arg)
Definition: libetonyek_utils.h:34
libetonyek::etonyek_root_two
const double etonyek_root_two(1.41421356237309504880168872420969807856967187537694807317667973799073247846210703885038753432764157273501384623e+00)
libetonyek::getRemainingLength
unsigned long getRemainingLength(const RVNGInputStreamPtr_t &input)
Definition: libetonyek_utils.cpp:215
libetonyek::getLength
unsigned long getLength(const RVNGInputStreamPtr_t &input)
Definition: libetonyek_utils.cpp:184
libetonyek::deg2rad
double deg2rad(double value)
Convert an angle from degrees to radians.
Definition: libetonyek_utils.cpp:230
y
double y
Definition: IWORKShape.cpp:46
libetonyek::readFloat
float readFloat(const RVNGInputStreamPtr_t &input)
Definition: libetonyek_utils.cpp:173
libetonyek::GenericException
Definition: libetonyek_utils.h:151
libetonyek::EndOfStreamException
Definition: libetonyek_utils.h:147
libetonyek::pt2in
double pt2in(const double d)
Convert a length from points to inches.
Definition: libetonyek_utils.cpp:225
libetonyek::IWORKToken::value
Definition: IWORKToken.h:624
libetonyek::readU32
uint32_t readU32(const RVNGInputStreamPtr_t &input, bool bigEndian)
Definition: libetonyek_utils.cpp:76
libetonyek::IWORKToken::left
Definition: IWORKToken.h:568
libetonyek::etonyek_root_three
const double etonyek_root_three(1.73205080756887729352744634150587236694280525381038062805580697945193301690880003708114618675724857567562614142e+00)
libetonyek::readUVar
uint64_t readUVar(const RVNGInputStreamPtr_t &input)
Definition: libetonyek_utils.cpp:108
libetonyek::approxEqual
bool approxEqual(const IWORKPath &left, const IWORKPath &right, double eps=ETONYEK_EPSILON)
x
double x
Definition: IWORKShape.cpp:45
libetonyek::IWORKToken::d
Definition: IWORKToken.h:173
libetonyek::IWORKToken::color
Definition: IWORKToken.h:151
name
const char * name
Definition: IWORKToken.cpp:43
libetonyek::IWORKToken::right
Definition: IWORKToken.h:597
libetonyek::KEY2Token::i
Definition: KEY2Token.h:101
libetonyek::readU8
uint8_t readU8(const RVNGInputStreamPtr_t &input, bool)
Definition: libetonyek_utils.cpp:48
libetonyek::rad2deg
double rad2deg(double value)
Convert an angle from radians to degrees.
Definition: libetonyek_utils.cpp:239
libetonyek::readSVar
int64_t readSVar(const RVNGInputStreamPtr_t &input)
Definition: libetonyek_utils.cpp:141
libetonyek::RVNGInputStreamPtr_t
std::shared_ptr< librevenge::RVNGInputStream > RVNGInputStreamPtr_t
Definition: libetonyek_utils.h:82
libetonyek::readU64
uint64_t readU64(const RVNGInputStreamPtr_t &input, bool bigEndian)
Definition: libetonyek_utils.cpp:92
libetonyek::EtonyekDummyDeleter::operator()
void operator()(void *)
Definition: libetonyek_utils.h:79
libetonyek::ETONYEK_EPOCH_BEGIN
const unsigned ETONYEK_EPOCH_BEGIN(978307200)
libetonyek::KEY1Token::gradient
Definition: KEY1Token.h:58
libetonyek::etonyek_two_pi
const double etonyek_two_pi(6.28318530717958647692528676655900576839433879875021164194988918461563281257241799725606965068423413596429617303e+00)
libetonyek::makeColor
librevenge::RVNGString makeColor(const IWORKColor &color)
Definition: libetonyek_utils.cpp:251
libetonyek::IWORKToken::format
Definition: IWORKToken.h:530
libetonyek::EtonyekDummyDeleter
Definition: libetonyek_utils.h:77
libetonyek::etonyek_half_pi
const double etonyek_half_pi(1.57079632679489661923132169163975144209858469968755291048747229615390820314310449931401741267105853399107404326e+00)
libetonyek::readU16
uint16_t readU16(const RVNGInputStreamPtr_t &input, bool bigEndian)
Definition: libetonyek_utils.cpp:60
ETONYEK_EPSILON
#define ETONYEK_EPSILON
Definition: libetonyek_utils.h:26
libetonyek::readDouble
double readDouble(const RVNGInputStreamPtr_t &input)
Definition: libetonyek_utils.cpp:162
libetonyek::writeBorder
void writeBorder(const IWORKStroke &stroke, const char *const name, librevenge::RVNGPropertyList &props)
Definition: libetonyek_utils.cpp:286
libetonyek::IWORKToken::stroke
Definition: IWORKToken.h:412
libetonyek::etonyek_pi
const double etonyek_pi(3.14159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211706798214808651e+00)
libetonyek::etonyek_third_pi
const double etonyek_third_pi(1.04719755119659774615421446109316762806572313312503527365831486410260546876206966620934494178070568932738269550e+00)