1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
|
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* This file is part of the libvisio project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include <cstdarg>
#include <cstdio>
#include "VSDInternalStream.h"
#include "libvisio_utils.h"
uint8_t libvisio::readU8(librevenge::RVNGInputStream *input)
{
if (!input || input->isEnd())
{
VSD_DEBUG_MSG(("Throwing EndOfStreamException\n"));
throw EndOfStreamException();
}
unsigned long numBytesRead;
uint8_t const *p = input->read(sizeof(uint8_t), numBytesRead);
if (p && numBytesRead == sizeof(uint8_t))
return *(uint8_t const *)(p);
VSD_DEBUG_MSG(("Throwing EndOfStreamException\n"));
throw EndOfStreamException();
}
uint16_t libvisio::readU16(librevenge::RVNGInputStream *input)
{
if (!input || input->isEnd())
{
VSD_DEBUG_MSG(("Throwing EndOfStreamException\n"));
throw EndOfStreamException();
}
unsigned long numBytesRead;
uint8_t const *p = input->read(sizeof(uint16_t), numBytesRead);
if (p && numBytesRead == sizeof(uint16_t))
return (uint16_t)p[0]|((uint16_t)p[1]<<8);
VSD_DEBUG_MSG(("Throwing EndOfStreamException\n"));
throw EndOfStreamException();
}
int16_t libvisio::readS16(librevenge::RVNGInputStream *input)
{
return (int16_t)readU16(input);
}
uint32_t libvisio::readU32(librevenge::RVNGInputStream *input)
{
if (!input || input->isEnd())
{
VSD_DEBUG_MSG(("Throwing EndOfStreamException\n"));
throw EndOfStreamException();
}
unsigned long numBytesRead;
uint8_t const *p = input->read(sizeof(uint32_t), numBytesRead);
if (p && numBytesRead == sizeof(uint32_t))
return (uint32_t)p[0]|((uint32_t)p[1]<<8)|((uint32_t)p[2]<<16)|((uint32_t)p[3]<<24);
VSD_DEBUG_MSG(("Throwing EndOfStreamException\n"));
throw EndOfStreamException();
}
int32_t libvisio::readS32(librevenge::RVNGInputStream *input)
{
return (int32_t)readU32(input);
}
uint64_t libvisio::readU64(librevenge::RVNGInputStream *input)
{
if (!input || input->isEnd())
{
VSD_DEBUG_MSG(("Throwing EndOfStreamException\n"));
throw EndOfStreamException();
}
unsigned long numBytesRead;
uint8_t const *p = input->read(sizeof(uint64_t), numBytesRead);
if (p && numBytesRead == sizeof(uint64_t))
return (uint64_t)p[0]|((uint64_t)p[1]<<8)|((uint64_t)p[2]<<16)|((uint64_t)p[3]<<24)|((uint64_t)p[4]<<32)|((uint64_t)p[5]<<40)|((uint64_t)p[6]<<48)|((uint64_t)p[7]<<56);
VSD_DEBUG_MSG(("Throwing EndOfStreamException\n"));
throw EndOfStreamException();
}
double libvisio::readDouble(librevenge::RVNGInputStream *input)
{
union
{
uint64_t u;
double d;
} tmpUnion;
tmpUnion.u = readU64(input);
return tmpUnion.d;
}
const librevenge::RVNGString libvisio::getColourString(const Colour &c)
{
librevenge::RVNGString sColour;
sColour.sprintf("#%.2x%.2x%.2x", c.r, c.g, c.b);
return sColour;
}
unsigned long libvisio::getRemainingLength(librevenge::RVNGInputStream *const input)
{
if (!input)
throw EndOfStreamException();
const long begin = input->tell();
if (input->seek(0, librevenge::RVNG_SEEK_END) != 0)
{
// librevenge::RVNG_SEEK_END does not work. Use the harder way.
while (!input->isEnd())
readU8(input);
}
const long end = input->tell();
input->seek(begin, librevenge::RVNG_SEEK_SET);
if (end < begin)
throw EndOfStreamException();
return static_cast<unsigned long>(end - begin);
}
void libvisio::appendUCS4(librevenge::RVNGString &text, UChar32 ucs4Character)
{
// Convert carriage returns to new line characters
if (ucs4Character == (UChar32) 0x0d || ucs4Character == (UChar32) 0x0e)
ucs4Character = (UChar32) '\n';
unsigned char outbuf[U8_MAX_LENGTH+1];
int i = 0;
U8_APPEND_UNSAFE(&outbuf[0], i, ucs4Character);
outbuf[i] = 0;
text.append((char *)outbuf);
}
void libvisio::debugPrint(const char *format, ...)
{
va_list args;
va_start(args, format);
std::vfprintf(stderr, format, args);
va_end(args);
}
/* vim:set shiftwidth=2 softtabstop=2 expandtab: */
|
