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highlighter.cpp
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highlighter.cpp
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/****************************************************************************
**
** Copyright (C) 2007-2009 Kevin Clague. All rights reserved.
**
** This file may be used under the terms of the GNU General Public
** License version 2.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
** this file. Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
** http://www.trolltech.com/products/qt/opensource.html
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/
/****************************************************************************
*
* This implements a syntax highlighter class that works with the editwindow
* to display LDraw files with syntax highlighting.
*
* Please see lpub.h for an overall description of how the files in LPub
* make up the LPub program.
*
***************************************************************************/
#include <QtGui>
#include "highlighter.h"
Highlighter::Highlighter(QTextDocument *parent)
: QSyntaxHighlighter(parent)
{
HighlightingRule rule;
officialMetaFormat.setForeground(Qt::blue);
officialMetaFormat.setFontWeight(QFont::Bold);
QStringList officialMetaPatterns;
officialMetaPatterns
<< "\\bFILE[^\n]*"
<< "\\bNOFILE[^\n]*"
<< "\\bAuthor[^\n]*"
<< "\\bBFC[^\n]*"
<< "\\b!CATEGORY[^\n]*"
<< "\\bCLEAR[^\n]*"
<< "\\b!CMDLINE[^\n]*"
<< "\\b!COLOUR[^\n]*"
<< "\\b!HELP[^\n]*"
<< "\\b!HISTORY[^\n]*"
<< "\\b!KEYWORDS[^\n]*"
<< "\\b!LDRAW_ORG[^\n]*"
<< "\\bLDRAW_ORG[^\n]*"
<< "\\b!LICENSE[^\n]*"
<< "\\bName[^\n]*"
<< "\\bPAUSE[^\n]*"
<< "\\bPRINT[^\n]*"
<< "\\bSAVE[^\n]*"
<< "\\bSTEP[^\n]*\\b"
<< "\\bWRITE[^\n]*\\b"
<< "\\bOfficial[^\n]*"
<< "\\bUnofficial[^\n]*"
<< "\\bUn-official[^\n]*"
<< "\\bOriginal LDraw[^\n]*"
<< "\\b~Moved to[^\n]*"
<< "\\b//[^\n]*"
;
foreach (QString pattern, officialMetaPatterns) {
rule.pattern = QRegExp(pattern);
rule.format = officialMetaFormat;
highlightingRules.append(rule);
}
MLCadMetaFormat.setForeground(Qt::darkBlue);
MLCadMetaFormat.setFontWeight(QFont::Bold);
QStringList MLCadMetaPatterns;
MLCadMetaPatterns
<< "\\bROTATION\\b[^\n]*"
<< "\\bROTSTEP\\b[^\n]*"
<< "\\bBUFEXCHG\\b[^\n]*"
<< "\\bMLCAD\\b[^\n]*"
<< "\\bGROUP\\b[^\n]*"
<< "\\bGHOST\\b[^\n]*"
<< "\\bBACKGROUND\\b[^\n]*";
foreach (QString pattern, MLCadMetaPatterns) {
rule.pattern = QRegExp(pattern);
rule.format = MLCadMetaFormat;
highlightingRules.append(rule);
}
LPubMetaFormat.setForeground(Qt::darkRed);
LPubMetaFormat.setFontWeight(QFont::Bold);
QStringList LPubMetaPatterns;
LPubMetaPatterns
<< "\\bLPUB\\b[^\n]*"
<< "\\b!LPUB\\b[^\n]*"
<< "\\bPLIST\\b[^\n]*";
foreach (QString pattern, LPubMetaPatterns) {
rule.pattern = QRegExp(pattern);
rule.format = LPubMetaFormat;
highlightingRules.append(rule);
}
LSynthMetaFormat.setFontWeight(QFont::Bold);
LSynthMetaFormat.setForeground(Qt::red);
QStringList LSynthMetaPatterns;
LSynthMetaPatterns
<< "\\bSYNTH\\b[^\n]*"
<< "\\b!SYNTH\\b[^\n]*";
foreach (QString pattern, LSynthMetaPatterns) {
rule.pattern = QRegExp(pattern);
rule.format = LSynthMetaFormat;
highlightingRules.append(rule);
}
multiLineCommentFormat.setForeground(Qt::darkGreen);
commentStartExpression = QRegExp("\\bLPUB FOO BEGIN\\b+[^\n]*");
commentEndExpression = QRegExp("\\bLPUB FOO END\\b+[^\n]*");
}
void Highlighter::highlightBlock(const QString &text)
{
foreach (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, multiLineCommentFormat);
startIndex = text.indexOf(commentStartExpression,
startIndex + commentLength);
}
}