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
|
// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0+ OR GPL-3.0 WITH Qt-GPL-exception-1.0
#include "uncommentselection.h"
#include "qtcassert.h"
#include "multitextcursor.h"
#include <QTextBlock>
#include <QTextCursor>
#include <QTextDocument>
namespace Utils {
CommentDefinition CommentDefinition::CppStyle = CommentDefinition("//", "/*", "*/");
CommentDefinition CommentDefinition::HashStyle = CommentDefinition("#");
CommentDefinition::CommentDefinition() = default;
CommentDefinition::CommentDefinition(const QString &single, const QString &multiStart,
const QString &multiEnd)
: singleLine(single),
multiLineStart(multiStart),
multiLineEnd(multiEnd)
{
}
bool CommentDefinition::isValid() const
{
return hasSingleLineStyle() || hasMultiLineStyle();
}
bool CommentDefinition::hasSingleLineStyle() const
{
return !singleLine.isEmpty();
}
bool CommentDefinition::hasMultiLineStyle() const
{
return !multiLineStart.isEmpty() && !multiLineEnd.isEmpty();
}
static bool isComment(const QString &text, int index,
const QString &commentType)
{
const int length = commentType.length();
Q_ASSERT(text.length() - index >= length);
int i = 0;
while (i < length) {
if (text.at(index + i) != commentType.at(i))
return false;
++i;
}
return true;
}
QTextCursor unCommentSelection(const QTextCursor &cursorIn,
const CommentDefinition &definition,
bool preferSingleLine)
{
if (!definition.isValid())
return cursorIn;
QTextCursor cursor = cursorIn;
QTextDocument *doc = cursor.document();
cursor.beginEditBlock();
int pos = cursor.position();
int anchor = cursor.anchor();
int start = qMin(anchor, pos);
int end = qMax(anchor, pos);
bool anchorIsStart = (anchor == start);
QTextBlock startBlock = doc->findBlock(start);
QTextBlock endBlock = doc->findBlock(end);
if (end > start && endBlock.position() == end) {
--end;
endBlock = endBlock.previous();
}
bool doMultiLineStyleUncomment = false;
bool doMultiLineStyleComment = false;
bool doSingleLineStyleUncomment = false;
bool hasSelection = cursor.hasSelection();
if (hasSelection && definition.hasMultiLineStyle() && !preferSingleLine) {
QString startText = startBlock.text();
int startPos = start - startBlock.position();
const int multiLineStartLength = definition.multiLineStart.length();
bool hasLeadingCharacters = !startText.left(startPos).trimmed().isEmpty();
if (startPos >= multiLineStartLength
&& isComment(startText,
startPos - multiLineStartLength,
definition.multiLineStart)) {
startPos -= multiLineStartLength;
start -= multiLineStartLength;
}
bool hasSelStart = startPos <= startText.length() - multiLineStartLength
&& isComment(startText, startPos, definition.multiLineStart);
QString endText = endBlock.text();
int endPos = end - endBlock.position();
const int multiLineEndLength = definition.multiLineEnd.length();
bool hasTrailingCharacters =
!endText.left(endPos).remove(definition.singleLine).trimmed().isEmpty()
&& !endText.mid(endPos).trimmed().isEmpty();
if (endPos <= endText.length() - multiLineEndLength
&& isComment(endText, endPos, definition.multiLineEnd)) {
endPos += multiLineEndLength;
end += multiLineEndLength;
}
bool hasSelEnd = endPos >= multiLineEndLength
&& isComment(endText, endPos - multiLineEndLength, definition.multiLineEnd);
doMultiLineStyleUncomment = hasSelStart && hasSelEnd;
doMultiLineStyleComment = !doMultiLineStyleUncomment
&& (hasLeadingCharacters
|| hasTrailingCharacters
|| !definition.hasSingleLineStyle());
} else if (!hasSelection && !definition.hasSingleLineStyle()) {
QString text = startBlock.text().trimmed();
doMultiLineStyleUncomment = text.startsWith(definition.multiLineStart)
&& text.endsWith(definition.multiLineEnd);
doMultiLineStyleComment = !doMultiLineStyleUncomment && !text.isEmpty();
start = startBlock.position();
end = endBlock.position() + endBlock.length() - 1;
if (doMultiLineStyleUncomment) {
int offset = 0;
text = startBlock.text();
const int length = text.length();
while (offset < length && text.at(offset).isSpace())
++offset;
start += offset;
}
}
if (doMultiLineStyleUncomment) {
cursor.setPosition(end);
cursor.movePosition(QTextCursor::PreviousCharacter,
QTextCursor::KeepAnchor,
definition.multiLineEnd.length());
cursor.removeSelectedText();
cursor.setPosition(start);
cursor.movePosition(QTextCursor::NextCharacter,
QTextCursor::KeepAnchor,
definition.multiLineStart.length());
cursor.removeSelectedText();
} else if (doMultiLineStyleComment) {
cursor.setPosition(end);
cursor.insertText(definition.multiLineEnd);
cursor.setPosition(start);
cursor.insertText(definition.multiLineStart);
} else {
endBlock = endBlock.next();
doSingleLineStyleUncomment = true;
for (QTextBlock block = startBlock; block != endBlock; block = block.next()) {
QString text = block.text().trimmed();
if (!text.isEmpty() && !text.startsWith(definition.singleLine)) {
doSingleLineStyleUncomment = false;
break;
}
}
const int singleLineLength = definition.singleLine.length();
for (QTextBlock block = startBlock; block != endBlock; block = block.next()) {
if (doSingleLineStyleUncomment) {
QString text = block.text();
int i = 0;
while (i <= text.size() - singleLineLength) {
if (isComment(text, i, definition.singleLine)) {
cursor.setPosition(block.position() + i);
cursor.movePosition(QTextCursor::NextCharacter,
QTextCursor::KeepAnchor,
singleLineLength);
cursor.removeSelectedText();
break;
}
if (!text.at(i).isSpace())
break;
++i;
}
} else {
const QString text = block.text();
for (QChar c : text) {
if (!c.isSpace()) {
if (definition.isAfterWhiteSpaces)
cursor.setPosition(block.position() + text.indexOf(c));
else
cursor.setPosition(block.position());
cursor.insertText(definition.singleLine);
break;
}
}
}
}
}
cursor.endEditBlock();
cursor = cursorIn;
// adjust selection when commenting out
if (hasSelection && !doMultiLineStyleUncomment && !doSingleLineStyleUncomment) {
if (!doMultiLineStyleComment)
start = startBlock.position(); // move the comment into the selection
int lastSelPos = anchorIsStart ? cursor.position() : cursor.anchor();
if (anchorIsStart) {
cursor.setPosition(start);
cursor.setPosition(lastSelPos, QTextCursor::KeepAnchor);
} else {
cursor.setPosition(lastSelPos);
cursor.setPosition(start, QTextCursor::KeepAnchor);
}
}
return cursor;
}
MultiTextCursor unCommentSelection(const MultiTextCursor &cursorIn,
const CommentDefinition &definiton,
bool preferSingleLine)
{
if (cursorIn.isNull())
return cursorIn;
if (!cursorIn.hasMultipleCursors())
return MultiTextCursor({unCommentSelection(cursorIn.mainCursor(), definiton, preferSingleLine)});
QMap<int, QTextCursor> cursors;
for (const QTextCursor &c : cursorIn) {
QTextBlock block = c.document()->findBlock(c.selectionStart());
QTC_ASSERT(block.isValid(), continue);
QTextBlock end = c.document()->findBlock(c.selectionEnd());
QTC_ASSERT(end.isValid(), continue);
end = end.next();
while (block != end && block.isValid()) {
if (!cursors.contains(block.blockNumber()))
cursors.insert(block.blockNumber(), QTextCursor(block));
block = block.next();
}
}
for (const QTextCursor &c : cursors)
unCommentSelection(c, definiton, /*always prefer single line for multi cursor*/ true);
return cursorIn;
}
} // namespace Utils
|
