forked from qt-creator/qt-creator
120 lines
3.5 KiB
C++
120 lines
3.5 KiB
C++
/***************************************************************************
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**
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** This file is part of Qt Creator
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**
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** Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
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**
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** Contact: Qt Software Information (qt-info@nokia.com)
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**
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**
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** Non-Open Source Usage
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**
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** Licensees may use this file in accordance with the Qt Beta Version
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** License Agreement, Agreement version 2.2 provided with the Software or,
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** alternatively, in accordance with the terms contained in a written
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** agreement between you and Nokia.
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**
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** GNU General Public License Usage
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**
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** Alternatively, this file may be used under the terms of the GNU General
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** Public License versions 2.0 or 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the packaging
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** of this file. Please review the following information to ensure GNU
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** General Public Licensing requirements will be met:
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**
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** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
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** http://www.gnu.org/copyleft/gpl.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt GPL Exception
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** version 1.2, included in the file GPL_EXCEPTION.txt in this package.
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**
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***************************************************************************/
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#include "diffhighlighter.h"
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#include <QtCore/QDebug>
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#include <QtCore/QtAlgorithms>
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#include <QtCore/QRegExp>
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namespace VCSBase {
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// Formats used by DiffHighlighter
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enum DiffFormats {
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DiffTextFormat,
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DiffInFormat,
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DiffOutFormat,
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DiffFileFormat,
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DiffLocationFormat,
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NumDiffFormats
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};
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// --- DiffHighlighterPrivate
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struct DiffHighlighterPrivate {
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DiffHighlighterPrivate(const QRegExp &filePattern);
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inline DiffFormats analyzeLine(const QString &block) const;
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const QRegExp m_filePattern;
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const QString m_locationIndicator;
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const QChar m_diffInIndicator;
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const QChar m_diffOutIndicator;
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QTextCharFormat m_formats[NumDiffFormats];
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};
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DiffHighlighterPrivate::DiffHighlighterPrivate(const QRegExp &filePattern) :
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m_filePattern(filePattern),
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m_locationIndicator(QLatin1String("@@")),
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m_diffInIndicator(QLatin1Char('+')),
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m_diffOutIndicator(QLatin1Char('-'))
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{
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Q_ASSERT(filePattern.isValid());
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}
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DiffFormats DiffHighlighterPrivate::analyzeLine(const QString &text) const
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{
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// Do not match on git "--- a/" as a deleted line, check
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// file first
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if (m_filePattern.exactMatch(text))
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return DiffFileFormat;
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if (text.startsWith(m_diffInIndicator))
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return DiffInFormat;
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if (text.startsWith(m_diffOutIndicator))
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return DiffOutFormat;
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if (text.startsWith(m_locationIndicator))
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return DiffLocationFormat;
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return DiffTextFormat;
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}
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// --- DiffHighlighter
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DiffHighlighter::DiffHighlighter(const QRegExp &filePattern,
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QTextDocument *document) :
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QSyntaxHighlighter(document),
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m_d(new DiffHighlighterPrivate(filePattern))
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{
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}
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DiffHighlighter::~DiffHighlighter()
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{
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delete m_d;
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}
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void DiffHighlighter::highlightBlock(const QString &text)
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{
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if (text.isEmpty())
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return;
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const DiffFormats format = m_d->analyzeLine(text);
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if (format != DiffTextFormat)
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setFormat(0, text.length(), m_d->m_formats[format]);
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}
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void DiffHighlighter::setFormats(const QVector<QTextCharFormat> &s)
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{
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if (s.size() == NumDiffFormats) {
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qCopy(s.constBegin(), s.constEnd(), m_d->m_formats);
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} else {
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qWarning("%s: insufficient setting size: %d", Q_FUNC_INFO, s.size());
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}
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}
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} // namespace VCSBase
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