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
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
|
// Copyright (C) 2020 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "textstream.h"
#include <cstring>
TextStream::TextStream(QIODevice *device, Language l) :
m_str(device), m_language(l)
{
}
TextStream::TextStream(QString *string, Language l) :
m_str(string), m_language(l)
{
}
TextStream::TextStream(QByteArray *array, Language l) :
m_str(array), m_language(l)
{
}
TextStream::~TextStream() = default;
QChar TextStream::lastChar() const
{
auto s = m_str.string();
return s != nullptr && !s->isEmpty() ? *(s->crbegin()) : QChar();
}
void TextStream::setIndentation(int i)
{
Q_ASSERT(i >= 0);
m_indentation = i;
}
void TextStream::outdent(int n)
{
m_indentation -= n;
Q_ASSERT(m_indentation >= 0);
}
qint64 TextStream::pos() const
{
// QTextStream::pos() only works for QIODevice, be a bit smarter
if (auto s = m_str.string())
return s->size();
// QIODevices need to flushed to tell the correct position.
const_cast<QTextStream &>(m_str).flush();
return m_str.pos();
}
void TextStream::setString(QString *string, QIODeviceBase::OpenMode openMode)
{
m_str.setString(string, openMode);
m_rstFormattingEnd = false;
}
void TextStream::putRepetitiveChars(char c, int count)
{
if (count > 0) {
for (int i = 0; i < count; ++i) {
const int ofw = m_str.fieldWidth();
m_str.setFieldWidth(0);
m_str << c;
m_str.setFieldWidth(ofw);
}
}
}
void TextStream::_setRstFormattingEnd()
{
m_rstFormattingEnd = true;
}
void TextStream::setLastCharClass(CharClass c)
{
m_lastCharClass = c;
}
void TextStream::writeIndent()
{
putRepetitiveChars(' ', m_indentation * m_tabWidth);
}
// Indent handling: If the last character was a new line
// and the upcoming one is none, indent the stream
// Special case for C++ : If the upcoming char is a '#', we don't
// indent (preprocessor directive).
template <class Char>
static TextStream::CharClass charClassHelper(Char c)
{
switch (c) {
case '\n':
return TextStream::CharClass::NewLine;
case '#':
return TextStream::CharClass::Hash;
case ' ':
case '\t':
return TextStream::CharClass::Space;
case '\\':
return TextStream::CharClass::BackSlash;
default:
break;
}
return TextStream::CharClass::Other;
}
static inline TextStream::CharClass charClass(char c)
{ return charClassHelper(c); }
static inline TextStream::CharClass charClass(QChar c)
{ return charClassHelper(c.unicode()); }
void TextStream::checkIndent(CharClass upComingCharClass)
{
if (m_rstFormattingEnd) {
if (upComingCharClass != CharClass::Space && upComingCharClass != CharClass::NewLine
&& upComingCharClass != CharClass::BackSlash) {
m_str << '\\';
}
m_rstFormattingEnd = false;
}
if (m_indentationEnabled && m_lastCharClass == CharClass::NewLine
&& (upComingCharClass != CharClass::NewLine
&& (m_language != Language::Cpp || upComingCharClass != CharClass::Hash))) {
writeIndent();
}
m_lastCharClass = upComingCharClass;
}
template <class Char>
void TextStream::putCharHelper(Char c)
{
const auto klass = charClass(c);
checkIndent(klass);
m_str << c;
}
void TextStream::putString(QStringView v)
{
if (v.isEmpty())
return;
if (v.contains(u'\n')) {
for (auto c : v)
putCharHelper(c);
} else {
// If there is no newline, write as a blob. This is important to make
// field formatting (alignment/width) working, else each char will be
// considered a field.
const auto klass = charClass(*v.cbegin());
checkIndent(klass);
m_str << v;
m_lastCharClass = CharClass::Other;
}
}
void TextStream::putChar(QChar c)
{
putCharHelper(c);
}
void TextStream::putString(const char *s)
{
const char firstChar = *s;
if (firstChar == '\0')
return;
if (std::strchr(s, '\n') != nullptr) { // See above
for ( ; *s; ++s)
putCharHelper(*s);
} else {
checkIndent(charClass(firstChar));
m_str << s;
m_lastCharClass = CharClass::Other;
}
}
void TextStream::putChar(char c)
{
putCharHelper(c);
}
void TextStream::putInt(int t)
{
checkIndent(CharClass::Other);
m_str << t;
}
void TextStream::putSizeType(qsizetype t)
{
checkIndent(CharClass::Other);
m_str << t;
}
StringStream::StringStream(Language l) : TextStream(&m_buffer, l)
{
}
void StringStream::clear()
{
m_buffer.clear();
setLastCharClass(CharClass::NewLine);
}
void indent(TextStream &s)
{
s.indent();
}
void outdent(TextStream &s)
{
s.outdent();
}
void enableIndent(TextStream &s)
{
s.setIndentationEnabled(true);
}
void disableIndent(TextStream &s)
{
s.setIndentationEnabled(false);
}
void ensureEndl(TextStream &s)
{
if (s.lastChar() != u'\n')
s << '\n';
}
void rstBold(TextStream &s)
{
s.putRawString("**");
}
void rstBoldOff(TextStream &s)
{
s.putRawString("**");
s._setRstFormattingEnd();
}
void rstItalic(TextStream &s)
{
s.putRawChar('*');
}
void rstItalicOff(TextStream &s)
{
s.putRawChar('*');
s._setRstFormattingEnd();
}
void rstCode(TextStream &s)
{
s.putRawString("``");
}
void rstCodeOff(TextStream &s)
{
s.putRawString("``");
s._setRstFormattingEnd();
}
|
