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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd and its Subsidiary(-ies) nor the
** names of its contributors may be used to endorse or promote products
** derived from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "xmlsyntaxhighlighter.h"
XmlSyntaxHighlighter::XmlSyntaxHighlighter(QTextDocument *parent)
: QSyntaxHighlighter(parent)
{
HighlightingRule rule;
// tag format
tagFormat.setForeground(Qt::darkBlue);
tagFormat.setFontWeight(QFont::Bold);
rule.pattern = QRegExp("(<[a-zA-Z:]+\\b|<\\?[a-zA-Z:]+\\b|\\?>|>|/>|</[a-zA-Z:]+>)");
rule.format = tagFormat;
highlightingRules.append(rule);
// attribute format
attributeFormat.setForeground(Qt::darkGreen);
rule.pattern = QRegExp("[a-zA-Z:]+=");
rule.format = attributeFormat;
highlightingRules.append(rule);
// attribute content format
attributeContentFormat.setForeground(Qt::red);
rule.pattern = QRegExp("(\"[^\"]*\"|'[^']*')");
rule.format = attributeContentFormat;
highlightingRules.append(rule);
commentFormat.setForeground(Qt::lightGray);
commentFormat.setFontItalic(true);
commentStartExpression = QRegExp("<!--");
commentEndExpression = QRegExp("-->");
}
void XmlSyntaxHighlighter::highlightBlock(const QString &text)
{
foreach (const HighlightingRule &rule, highlightingRules) {
QRegExp expression(rule.pattern);
int index = text.indexOf(expression);
while (index >= 0) {
int length = expression.matchedLength();
setFormat(index, length, rule.format);
index = text.indexOf(expression, index + length);
}
}
setCurrentBlockState(0);
int startIndex = 0;
if (previousBlockState() != 1)
startIndex = text.indexOf(commentStartExpression);
while (startIndex >= 0) {
int endIndex = text.indexOf(commentEndExpression, startIndex);
int commentLength;
if (endIndex == -1) {
setCurrentBlockState(1);
commentLength = text.length() - startIndex;
} else {
commentLength = endIndex - startIndex
+ commentEndExpression.matchedLength();
}
setFormat(startIndex, commentLength, commentFormat);
startIndex = text.indexOf(commentStartExpression,
startIndex + commentLength);
}
}
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