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tdeutils/kregexpeditor/qtregexpconverter.cpp

300 lines
9.2 KiB

/*
* 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( TQString str, bool *ok );
extern RegExp* parseDataQtRegExp();
bool QtRegExpConverter::canParse()
{
return true;
}
RegExp* QtRegExpConverter::parse( const TQString& txt, bool* ok )
{
return parseQtRegExp( txt, ok );
}
TQString QtRegExpConverter::toString( AltnRegExp* regexp, bool markSelection )
{
TQString res;
bool first = true;
RegExpList list = regexp->children();
for ( RegExpListIt it(list); *it; ++it ) {
if ( !first ) {
res += TQString::fromLatin1( "|" );
}
first = false;
if ( markSelection && !regexp->isSelected() && (*it)->isSelected() ) {
res += TQString::fromLatin1("(") + toStr( *it, markSelection ) + TQString::fromLatin1(")");
}
else {
res += toStr( *it, markSelection );
}
}
return res;
}
TQString QtRegExpConverter::toString( ConcRegExp* regexp, bool markSelection )
{
TQString res;
bool childSelected = false;
RegExpList list = regexp->children();
for ( RegExpListIt it(list); *it; ++it ) {
TQString startPar = TQString::fromLocal8Bit("");
TQString endPar = TQString::fromLocal8Bit("");
if ( (*it)->precedence() < regexp->precedence() ) {
if ( markSelection )
startPar = TQString::fromLocal8Bit("(?:");
else
startPar = TQString::fromLatin1( "(" );
endPar = TQString::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 += TQString::fromLatin1("(");
childSelected = true;
}
if ( markSelection && childSelected && !regexp->isSelected() && !(*it)->isSelected() ) {
res += TQString::fromLatin1(")");
childSelected= false;
}
res += startPar + toStr( *it, markSelection ) + endPar;
}
if ( markSelection && childSelected && !regexp->isSelected() ) {
res += TQString::fromLatin1(")");
}
return res;
}
TQString QtRegExpConverter::toString( LookAheadRegExp* regexp, bool markSelection )
{
if ( regexp->lookAheadType() == LookAheadRegExp::POSITIVE )
return TQString::fromLatin1( "(?=" ) + toStr( regexp->child(), markSelection ) + TQString::fromLocal8Bit( ")" );
else
return TQString::fromLatin1( "(?!" ) + toStr( regexp->child(), markSelection ) + TQString::fromLocal8Bit( ")" );
}
TQString QtRegExpConverter::toString( TextRangeRegExp* regexp, bool /*markSelection*/ )
{
TQString 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.
TQStringList chars = regexp->chars();
for (unsigned int i = 0; i< chars.count(); i++) {
if ( *chars.at(i) == TQChar( ']' ) ) {
foundParenthesis = true;
}
else if ( *chars.at(i) == TQChar( '-' ) ) {
foundDash = true;
}
else if ( *chars.at(i) == TQChar( '^' ) ) {
foundCarrot = true;
}
else {
txt.append( *chars.at(i) );
}
}
// Now insert the ranges.
TQPtrList<StringPair> ranges = regexp->range();
for ( TQPtrListIterator<StringPair> it(ranges); *it; ++it ) {
txt.append((*it)->first()+ TQString::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!
TQString res = TQString::fromLatin1("[");
if ( regexp->negate() )
res.append(TQString::fromLatin1("^"));
// a ']' must be the first character in teh range.
if ( foundParenthesis ) {
res.append(TQString::fromLatin1("]"));
}
// a '-' must be the first character ( only coming after a ']')
if ( foundDash ) {
res.append(TQString::fromLatin1("-"));
}
res += txt;
// Insert \s,\S,\d,\D,\w, and \W
if ( regexp->digit() )
res += TQString::fromLocal8Bit("\\d");
if ( regexp->nonDigit() )
res += TQString::fromLocal8Bit("\\D");
if ( regexp->space() )
res += TQString::fromLocal8Bit("\\s");
if ( regexp->nonSpace() )
res += TQString::fromLocal8Bit("\\S");
if ( regexp->wordChar() )
res += TQString::fromLocal8Bit("\\w");
if ( regexp->nonWordChar() )
res += TQString::fromLocal8Bit("\\W");
if ( foundCarrot ) {
res.append( TQChar( '^' ) );
}
res.append(TQString::fromLatin1("]"));
return res;
}
TQString QtRegExpConverter::toString( CompoundRegExp* regexp, bool markSelection )
{
if ( markSelection && !regexp->isSelected() && regexp->child()->isSelected() )
return TQString::fromLatin1( "(" ) + toStr( regexp->child(), markSelection ) + TQString::fromLatin1( ")" );
else
return toStr( regexp->child(), markSelection );
}
TQString QtRegExpConverter::toString( DotRegExp* /*regexp*/, bool /*markSelection*/ )
{
return TQString::fromLatin1( "." );
}
TQString QtRegExpConverter::toString( PositionRegExp* regexp, bool /*markSelection*/ )
{
switch (regexp->position()) {
case PositionRegExp::BEGLINE:
return TQString::fromLatin1("^");
case PositionRegExp::ENDLINE:
return TQString::fromLatin1("$");
case PositionRegExp::WORDBOUNDARY:
return TQString::fromLatin1("\\b");
case PositionRegExp::NONWORDBOUNDARY:
return TQString::fromLatin1("\\B");
}
Q_ASSERT( false );
return TQString::fromLatin1("");
}
TQString QtRegExpConverter::toString( RepeatRegExp* regexp, bool markSelection )
{
RegExp* child = regexp->child();
TQString cText = toStr( child, markSelection );
TQString startPar;
TQString endPar;
if ( markSelection ) {
if ( !regexp->isSelected() && child->isSelected()) {
startPar = TQString::fromLatin1( "(" );
endPar = TQString::fromLatin1( ")" );
}
else if ( child->precedence() < regexp->precedence() ) {
startPar = TQString::fromLatin1( "(?:" );
endPar = TQString::fromLatin1( ")" );
}
}
else if ( child->precedence() < regexp->precedence() ) {
startPar = TQString::fromLatin1( "(" );
endPar = TQString::fromLatin1( ")" );
}
if ( regexp->min() == 0 && regexp->max() == -1) {
return startPar + cText +endPar + TQString::fromLocal8Bit("*");
}
else if ( regexp->min() == 0 && regexp->max() == 1 ) {
return startPar + cText + endPar + TQString::fromLocal8Bit("?");
}
else if ( regexp->min() == 1 && regexp->max() == -1 ) {
return startPar + cText + endPar + TQString::fromLocal8Bit("+");
}
else if ( regexp->max() == -1 ) {
return startPar + cText + endPar + TQString::fromLocal8Bit("{") +
TQString::number( regexp->min() ) + TQString::fromLocal8Bit(",") +
TQString::fromLocal8Bit("}");
}
else {
return startPar + cText + endPar + TQString::fromLocal8Bit("{") +
TQString::number( regexp->min() ) + TQString::fromLocal8Bit(",") +
TQString::number( regexp->max() ) + TQString::fromLocal8Bit("}");
}
}
TQString QtRegExpConverter::toString( TextRegExp* regexp, bool /*markSelection*/ )
{
TQValueList<TQChar> list;
list << TQChar('$')
<< TQChar('^')
<< TQChar('.')
<< TQChar('*')
<< TQChar('+')
<< TQChar('?')
<< TQChar('[')
<< TQChar(']')
<< TQChar('\\')
<< TQChar('{')
<< TQChar('}')
<< TQChar('(')
<< TQChar(')')
<< TQChar('|');
TQString res = escape( regexp->text(), list, TQChar('\\') );
return res;
}
TQString QtRegExpConverter::name()
{
return TQString::fromLatin1( "Qt" );
}
int QtRegExpConverter::features()
{
return WordBoundary | NonWordBoundary | PosLookAhead | NegLookAhead | CharacterRangeNonItems | ExtRange;
}
RegexpHighlighter* QtRegExpConverter::highlighter( TQTextEdit* edit )
{
return new QtRegexpHighlighter( edit );
}