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highlighter.cpp

+#include "highlighter.h"
+Highlighter::Highlighter(QFile *xml, QString lang, QTextDocument *parent) : QSyntaxHighlighter(parent)
+{
+
+    HighlightingRule rule;
+    xml->open(QIODevice::ReadOnly);
+    QXmlStreamReader sr(xml);
+    bool valid = false;
+    do
+    {
+        sr.readNext();
+        if(sr.name() == "lang" && sr.isStartElement() && !valid)
+        {
+            qDebug() << sr.attributes().at(0).value().toString();
+            if(sr.attributes().at(0).value().toString() == lang)
+            {
+                qDebug() << sr.attributes().at(0).value().toString();
+                valid = true;
+            }
+        }
+        else if(sr.name() == "lang" && sr.isEndElement() && valid)
+        {
+            valid = false;
+        }
+        else if(!valid)
+        {
+            continue;
+        }
+        else if(sr.name() == "regexp" && sr.isStartElement())
+        {
+            sr.readNext();
+            rule.pattern.setPattern(sr.text().toString());
+            qDebug() << "REGEXP: " + sr.text();
+        }
+        else if(sr.name() == "color" && sr.isStartElement())
+        {
+            sr.readNext();
+            rule.format.setForeground(QColor(sr.text().toString()));
+            highlightingRules.append(rule);
+            qDebug() << "COLOR: " + sr.text();
+        }
+    } while(!sr.atEnd());
+    qDebug() << highlightingRules.count();
+}
+
+void Highlighter::highlightBlock(const QString &text)
+{
+    foreach (const HighlightingRule &rule, highlightingRules) {
+        QRegularExpressionMatchIterator matchIterator = rule.pattern.globalMatch(text);
+        while (matchIterator.hasNext()) {
+                QRegularExpressionMatch match = matchIterator.next();
+                setFormat(match.capturedStart(), match.capturedLength(), rule.format);
+        }
+    }
+    setCurrentBlockState(0);
+    QTextCharFormat multiLineCommentFormat;
+    multiLineCommentFormat.setForeground(Qt::red);
+    int startIndex = 0;
+    if (previousBlockState() != 1)
+        startIndex = text.indexOf(QRegularExpression("/\\*"));
+    while (startIndex >= 0) {
+        QRegularExpressionMatch match = QRegularExpression("\\*/").match(text, startIndex);
+        int endIndex = match.capturedStart();
+        int commentLength = 0;
+        if (endIndex == -1) {
+            setCurrentBlockState(1);
+            commentLength = text.length() - startIndex;
+        } else {
+            commentLength = endIndex - startIndex
+                            + match.capturedLength();
+        }
+        setFormat(startIndex, commentLength, multiLineCommentFormat);
+        startIndex = text.indexOf(QRegularExpression("/\\*"), startIndex + commentLength);
+        }
+}