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254 lines
7.2 KiB
254 lines
7.2 KiB
/*
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* Copyright (c) 2002-2004 Jesper K. Pedersen <blackie@kde.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License version 2 as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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**/
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#include "emacsregexpconverter.h"
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#include "regexp.h"
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#include "altnregexp.h"
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#include "concregexp.h"
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#include "lookaheadregexp.h"
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#include "textrangeregexp.h"
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#include "textregexp.h"
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#include "compoundregexp.h"
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#include "dotregexp.h"
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#include "positionregexp.h"
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#include "repeatregexp.h"
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#include <kmessagebox.h>
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#include <klocale.h>
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bool EmacsRegExpConverter::canParse()
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{
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return false;
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}
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TQString EmacsRegExpConverter::toString( AltnRegExp* regexp, bool markSelection )
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{
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TQString res;
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bool first = true;
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RegExpList list = regexp->tqchildren();
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for ( RegExpListIt it(list); *it; ++it ) {
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if ( !first ) {
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res += TQString::tqfromLatin1("\\|");
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}
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first = false;
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res += toStr( *it, markSelection );
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}
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return res;
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}
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TQString EmacsRegExpConverter::toString( ConcRegExp* regexp, bool markSelection )
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{
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TQString res;
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RegExpList list = regexp->tqchildren();
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for ( RegExpListIt it(list); *it; ++it ) {
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TQString startPar = TQString::fromLocal8Bit("");
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TQString endPar = TQString::fromLocal8Bit("");
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if ( (*it)->precedence() < regexp->precedence() ) {
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startPar = TQString::tqfromLatin1( "\\(" );
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endPar = TQString::tqfromLatin1( "\\)" );
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}
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res += startPar + toStr( *it, markSelection ) + endPar;
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}
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return res;
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}
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TQString EmacsRegExpConverter::toString( LookAheadRegExp* /*regexp*/, bool /*markSelection*/ )
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{
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static bool haveWarned = false;
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if ( ! haveWarned ) {
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KMessageBox::sorry( 0, i18n("Look ahead regular expressions not supported in Emacs style") );
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haveWarned = true;
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}
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return TQString();
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}
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TQString EmacsRegExpConverter::toString( TextRangeRegExp* regexp, bool /*markSelection*/ )
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{
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TQString txt;
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bool foundCarrot = false;
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bool foundDash = false;
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bool foundParenthesis = false;
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// print the single characters, but keep "^" as the very
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// last element of the characters.
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TQStringList chars = regexp->chars();
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for (unsigned int i = 0; i< chars.count(); i++) {
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if ( *chars.at(i) == TQChar(']') ) {
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foundParenthesis = true;
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}
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else if ( *chars.at(i) == TQChar('-') ) {
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foundDash = true;
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}
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else if ( *chars.at(i) == TQChar('^') ) {
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foundCarrot = true;
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}
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else {
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txt.append( *chars.at(i) );
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}
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}
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// Now insert the ranges.
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TQPtrList<StringPair> ranges = regexp->range();
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for ( TQPtrListIterator<StringPair> it(ranges); *it; ++it ) {
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txt.append((*it)->first()+ TQString::tqfromLatin1("-")+ (*it)->second());
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}
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// Ok, its time to build each part of the regexp, here comes the rule:
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// if a ']' is one of the characters, then it must be the first one in the
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// list (after then opening '[' and eventually negation '^')
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// Next if a '-' is one of the characters, then it must come
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// finally if '^' is one of the characters, then it must not be the first
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// one!
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TQString res = TQString::tqfromLatin1("[");
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if ( regexp->negate() )
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res.append(TQString::tqfromLatin1("^"));
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// a ']' must be the first character in teh range.
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if ( foundParenthesis ) {
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res.append(TQString::tqfromLatin1("]"));
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}
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// a '-' must be the first character ( only coming after a ']')
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if ( foundDash ) {
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res.append(TQString::tqfromLatin1("-"));
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}
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res += txt;
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// Insert equivalents to \s,\S,\d,\D,\w, and \W
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// non-digit, non-space, and non-word is not supported in Emacs style
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if ( regexp->digit() )
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res += TQString::fromLocal8Bit("0-9");
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if ( regexp->space() )
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res += TQString::fromLocal8Bit(" ") + TQString( TQChar( (char) 9 ) ); // Tab char
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if ( regexp->wordChar() )
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res += TQString::fromLocal8Bit("a-zA-Z");
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if ( foundCarrot ) {
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res.append( TQChar( '^' ) );
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}
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res.append(TQString::tqfromLatin1("]"));
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return res;
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}
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TQString EmacsRegExpConverter::toString( CompoundRegExp* regexp, bool markSelection )
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{
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return toStr( regexp->child(), markSelection );
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}
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TQString EmacsRegExpConverter::toString( DotRegExp* /*regexp*/, bool /*markSelection*/ )
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{
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return TQString::tqfromLatin1( "." );
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}
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TQString EmacsRegExpConverter::toString( PositionRegExp* regexp, bool /*markSelection*/ )
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{
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static bool haveWarned = false;
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switch ( regexp->position()) {
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case PositionRegExp::BEGLINE:
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return TQString::tqfromLatin1("^");
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case PositionRegExp::ENDLINE:
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return TQString::tqfromLatin1("$");
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case PositionRegExp::WORDBOUNDARY:
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case PositionRegExp::NONWORDBOUNDARY:
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if ( ! haveWarned ) {
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KMessageBox::sorry( 0, i18n( "Word boundary and non word boundary is not supported in Emacs syntax" ) );
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haveWarned = true;
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return TQString::tqfromLatin1("");
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}
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}
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return TQString::tqfromLatin1("");
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}
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TQString EmacsRegExpConverter::toString( RepeatRegExp* regexp, bool markSelection )
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{
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RegExp* child = regexp->child();
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TQString cText = toStr( child, markSelection );
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TQString startPar;
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TQString endPar;
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if ( child->precedence() < regexp->precedence() ) {
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startPar = TQString::tqfromLatin1( "\\(" );
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endPar = TQString::tqfromLatin1( "\\)" );
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}
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if (regexp->min() == 0 && regexp->max() == -1) {
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return startPar + cText +endPar + TQString::fromLocal8Bit("*");
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}
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else if ( regexp->min() == 0 && regexp->max() == 1 ) {
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return startPar + cText + endPar + TQString::fromLocal8Bit("?");
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}
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else if ( regexp->min() == 1 && regexp->max() == -1 ) {
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return startPar + cText + endPar + TQString::fromLocal8Bit("+");
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}
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else {
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TQString res = TQString::tqfromLatin1("");
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for ( int i = 0; i < regexp->min(); ++i ) {
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res += TQString::tqfromLatin1( "\\(" ) + cText + TQString::tqfromLatin1( "\\)" );
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}
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if ( regexp->max() != -1 ) {
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for ( int i = regexp->min(); i < regexp->max(); ++i ) {
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res += TQString::tqfromLatin1("\\(") + cText + TQString::tqfromLatin1("\\)?");
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}
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}
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else
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res += TQString::tqfromLatin1("+");
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return res;
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}
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}
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TQString EmacsRegExpConverter::toString( TextRegExp* regexp, bool /*markSelection*/ )
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{
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TQValueList<TQChar> list;
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list << TQChar('$')
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<< TQChar('^')
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<< TQChar('.')
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<< TQChar('*')
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<< TQChar('+')
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<< TQChar('?')
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<< TQChar('[')
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<< TQChar(']')
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<< TQChar('\\');
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TQString res = escape( regexp->text(), list, TQChar('\\') );
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return res;
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}
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TQString EmacsRegExpConverter::name()
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{
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return TQString::tqfromLatin1( "Emacs" );
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}
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int EmacsRegExpConverter::features()
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{
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return WordStart | WordEnd;
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}
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