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
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
|
/*
* Copyright (c) 2002-2004 Jesper K. Pedersen <blackie@kde.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License version 2 as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
**/
#include "qtregexpconverter.h"
#include "qtregexphighlighter.h"
#include "regexp.h"
#include "textregexp.h"
#include "altnregexp.h"
#include "concregexp.h"
#include "lookaheadregexp.h"
#include "textrangeregexp.h"
#include "compoundregexp.h"
#include "dotregexp.h"
#include "positionregexp.h"
#include "repeatregexp.h"
extern RegExp* parseQtRegExp( QString str, bool *ok );
extern RegExp* parseDataQtRegExp();
bool QtRegExpConverter::canParse()
{
return true;
}
RegExp* QtRegExpConverter::parse( const QString& txt, bool* ok )
{
return parseQtRegExp( txt, ok );
}
QString QtRegExpConverter::toString( AltnRegExp* regexp, bool markSelection )
{
QString res;
bool first = true;
RegExpList list = regexp->children();
for ( RegExpListIt it(list); *it; ++it ) {
if ( !first ) {
res += QString::fromLatin1( "|" );
}
first = false;
if ( markSelection && !regexp->isSelected() && (*it)->isSelected() ) {
res += QString::fromLatin1("(") + toStr( *it, markSelection ) + QString::fromLatin1(")");
}
else {
res += toStr( *it, markSelection );
}
}
return res;
}
QString QtRegExpConverter::toString( ConcRegExp* regexp, bool markSelection )
{
QString res;
bool childSelected = false;
RegExpList list = regexp->children();
for ( RegExpListIt it(list); *it; ++it ) {
QString startPar = QString::fromLocal8Bit("");
QString endPar = QString::fromLocal8Bit("");
if ( (*it)->precedence() < regexp->precedence() ) {
if ( markSelection )
startPar = QString::fromLocal8Bit("(?:");
else
startPar = QString::fromLatin1( "(" );
endPar = QString::fromLatin1( ")" );
}
// Note these two have different tests! They are activated in each their iteration of the loop.
if ( markSelection && !childSelected && !regexp->isSelected() && (*it)->isSelected() ) {
res += QString::fromLatin1("(");
childSelected = true;
}
if ( markSelection && childSelected && !regexp->isSelected() && !(*it)->isSelected() ) {
res += QString::fromLatin1(")");
childSelected= false;
}
res += startPar + toStr( *it, markSelection ) + endPar;
}
if ( markSelection && childSelected && !regexp->isSelected() ) {
res += QString::fromLatin1(")");
}
return res;
}
QString QtRegExpConverter::toString( LookAheadRegExp* regexp, bool markSelection )
{
if ( regexp->lookAheadType() == LookAheadRegExp::POSITIVE )
return QString::fromLatin1( "(?=" ) + toStr( regexp->child(), markSelection ) + QString::fromLocal8Bit( ")" );
else
return QString::fromLatin1( "(?!" ) + toStr( regexp->child(), markSelection ) + QString::fromLocal8Bit( ")" );
}
QString QtRegExpConverter::toString( TextRangeRegExp* regexp, bool /*markSelection*/ )
{
QString txt;
bool foundCarrot = false;
bool foundDash = false;
bool foundParenthesis = false;
// Now print the rest of the single characters, but keep "^" as the very
// last element of the characters.
QStringList chars = regexp->chars();
for (unsigned int i = 0; i< chars.count(); i++) {
if ( *chars.at(i) == QChar( ']' ) ) {
foundParenthesis = true;
}
else if ( *chars.at(i) == QChar( '-' ) ) {
foundDash = true;
}
else if ( *chars.at(i) == QChar( '^' ) ) {
foundCarrot = true;
}
else {
txt.append( *chars.at(i) );
}
}
// Now insert the ranges.
QPtrList<StringPair> ranges = regexp->range();
for ( QPtrListIterator<StringPair> it(ranges); *it; ++it ) {
txt.append((*it)->first()+ QString::fromLatin1("-")+ (*it)->second());
}
// Ok, its time to build each part of the regexp, here comes the rule:
// if a ']' is one of the characters, then it must be the first one in the
// list (after then opening '[' and eventually negation '^')
// Next if a '-' is one of the characters, then it must come
// finally if '^' is one of the characters, then it must not be the first
// one!
QString res = QString::fromLatin1("[");
if ( regexp->negate() )
res.append(QString::fromLatin1("^"));
// a ']' must be the first character in teh range.
if ( foundParenthesis ) {
res.append(QString::fromLatin1("]"));
}
// a '-' must be the first character ( only coming after a ']')
if ( foundDash ) {
res.append(QString::fromLatin1("-"));
}
res += txt;
// Insert \s,\S,\d,\D,\w, and \W
if ( regexp->digit() )
res += QString::fromLocal8Bit("\\d");
if ( regexp->nonDigit() )
res += QString::fromLocal8Bit("\\D");
if ( regexp->space() )
res += QString::fromLocal8Bit("\\s");
if ( regexp->nonSpace() )
res += QString::fromLocal8Bit("\\S");
if ( regexp->wordChar() )
res += QString::fromLocal8Bit("\\w");
if ( regexp->nonWordChar() )
res += QString::fromLocal8Bit("\\W");
if ( foundCarrot ) {
res.append( QChar( '^' ) );
}
res.append(QString::fromLatin1("]"));
return res;
}
QString QtRegExpConverter::toString( CompoundRegExp* regexp, bool markSelection )
{
if ( markSelection && !regexp->isSelected() && regexp->child()->isSelected() )
return QString::fromLatin1( "(" ) + toStr( regexp->child(), markSelection ) + QString::fromLatin1( ")" );
else
return toStr( regexp->child(), markSelection );
}
QString QtRegExpConverter::toString( DotRegExp* /*regexp*/, bool /*markSelection*/ )
{
return QString::fromLatin1( "." );
}
QString QtRegExpConverter::toString( PositionRegExp* regexp, bool /*markSelection*/ )
{
switch (regexp->position()) {
case PositionRegExp::BEGLINE:
return QString::fromLatin1("^");
case PositionRegExp::ENDLINE:
return QString::fromLatin1("$");
case PositionRegExp::WORDBOUNDARY:
return QString::fromLatin1("\\b");
case PositionRegExp::NONWORDBOUNDARY:
return QString::fromLatin1("\\B");
}
Q_ASSERT( false );
return QString::fromLatin1("");
}
QString QtRegExpConverter::toString( RepeatRegExp* regexp, bool markSelection )
{
RegExp* child = regexp->child();
QString cText = toStr( child, markSelection );
QString startPar;
QString endPar;
if ( markSelection ) {
if ( !regexp->isSelected() && child->isSelected()) {
startPar = QString::fromLatin1( "(" );
endPar = QString::fromLatin1( ")" );
}
else if ( child->precedence() < regexp->precedence() ) {
startPar = QString::fromLatin1( "(?:" );
endPar = QString::fromLatin1( ")" );
}
}
else if ( child->precedence() < regexp->precedence() ) {
startPar = QString::fromLatin1( "(" );
endPar = QString::fromLatin1( ")" );
}
if ( regexp->min() == 0 && regexp->max() == -1) {
return startPar + cText +endPar + QString::fromLocal8Bit("*");
}
else if ( regexp->min() == 0 && regexp->max() == 1 ) {
return startPar + cText + endPar + QString::fromLocal8Bit("?");
}
else if ( regexp->min() == 1 && regexp->max() == -1 ) {
return startPar + cText + endPar + QString::fromLocal8Bit("+");
}
else if ( regexp->max() == -1 ) {
return startPar + cText + endPar + QString::fromLocal8Bit("{") +
QString::number( regexp->min() ) + QString::fromLocal8Bit(",") +
QString::fromLocal8Bit("}");
}
else {
return startPar + cText + endPar + QString::fromLocal8Bit("{") +
QString::number( regexp->min() ) + QString::fromLocal8Bit(",") +
QString::number( regexp->max() ) + QString::fromLocal8Bit("}");
}
}
QString QtRegExpConverter::toString( TextRegExp* regexp, bool /*markSelection*/ )
{
QValueList<QChar> list;
list << QChar('$')
<< QChar('^')
<< QChar('.')
<< QChar('*')
<< QChar('+')
<< QChar('?')
<< QChar('[')
<< QChar(']')
<< QChar('\\')
<< QChar('{')
<< QChar('}')
<< QChar('(')
<< QChar(')')
<< QChar('|');
QString res = escape( regexp->text(), list, QChar('\\') );
return res;
}
QString QtRegExpConverter::name()
{
return QString::fromLatin1( "Qt" );
}
int QtRegExpConverter::features()
{
return WordBoundary | NonWordBoundary | PosLookAhead | NegLookAhead | CharacterRangeNonItems | ExtRange;
}
RegexpHighlighter* QtRegExpConverter::highlighter( QTextEdit* edit )
{
return new QtRegexpHighlighter( edit );
}
|
