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131 lines
5.2 KiB
C++
131 lines
5.2 KiB
C++
/* ============================================================
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* QupZilla - WebKit based browser
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* Copyright (C) 2010-2012 David Rosca <nowrep@gmail.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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* ============================================================ */
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/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
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** the names of its contributors may be used to endorse or promote
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** products derived from this software without specific prior written
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** permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "htmlhighlighter.h"
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HtmlHighlighter::HtmlHighlighter(QTextDocument* parent)
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: QSyntaxHighlighter(parent)
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{
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HighlightingRule rule;
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// tags: <tag1> </tag1>
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tagFormat.setForeground(Qt::darkBlue);
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tagFormat.setFontWeight(QFont::Bold);
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QStringList keywordPatterns;
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keywordPatterns << "</?([A-Za-z:0-9]{1,20})/?(>| )?" << ">" << "(<!DOCTYPE html>|<!DOCTYPE html PUBLIC)";
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foreach(const QString & pattern, keywordPatterns) {
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rule.pattern = QRegExp(pattern);
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rule.format = tagFormat;
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highlightingRules.append(rule);
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}
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// options: <tag option1="" option2="">
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tagOptionsFormat.setForeground(Qt::black);
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tagOptionsFormat.setFontWeight(QFont::Bold);
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rule.pattern = QRegExp("(\\S{2,20})=\"");
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rule.format = tagOptionsFormat;
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highlightingRules.append(rule);
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// " " strings
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quotationFormat.setForeground(Qt::darkGreen);
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QRegExp rx("\".*\"");
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rx.setMinimal(true);
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rule.pattern = rx;
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rule.format = quotationFormat;
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highlightingRules.append(rule);
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// <!-- --> comments
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multiLineCommentFormat.setForeground(Qt::gray);
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commentStartExpression = QRegExp("<!--");
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commentEndExpression = QRegExp("-->");
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}
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void HtmlHighlighter::highlightBlock(const QString &text)
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{
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foreach(const HighlightingRule & rule, highlightingRules) {
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QRegExp expression(rule.pattern);
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int index = expression.indexIn(text);
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while (index >= 0) {
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int length = expression.matchedLength();
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setFormat(index, length, rule.format);
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index = expression.indexIn(text, index + length);
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}
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}
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// Highlighting multi-line comments
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setCurrentBlockState(0);
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int startIndex = 0;
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if (previousBlockState() != 1) {
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startIndex = commentStartExpression.indexIn(text);
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}
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while (startIndex >= 0) {
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int endIndex = commentEndExpression.indexIn(text, startIndex);
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int commentLength;
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if (endIndex == -1) {
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setCurrentBlockState(1);
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commentLength = text.length() - startIndex;
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}
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else {
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commentLength = endIndex - startIndex
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+ commentEndExpression.matchedLength();
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}
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setFormat(startIndex, commentLength, multiLineCommentFormat);
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startIndex = commentStartExpression.indexIn(text, startIndex + commentLength);
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}
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}
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