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    41 

    42 #include "xmlsyntaxhighlighter.h"

    43 

    44 XmlSyntaxHighlighter::XmlSyntaxHighlighter(QTextDocument *parent)

    45     : QSyntaxHighlighter(parent)

    46 {

    47     HighlightingRule rule;

    48 

    49     // tag format

    50     tagFormat.setForeground(Qt::darkBlue);

    51     tagFormat.setFontWeight(QFont::Bold);

    52     rule.pattern = QRegExp("(<[a-zA-Z:]+\\b|<\\?[a-zA-Z:]+\\b|\\?>|>|/>|</[a-zA-Z:]+>)");

    53     rule.format = tagFormat;

    54     highlightingRules.append(rule);

    55 

    56     // attribute format

    57     attributeFormat.setForeground(Qt::darkGreen);

    58     rule.pattern = QRegExp("[a-zA-Z:]+=");

    59     rule.format = attributeFormat;

    60     highlightingRules.append(rule);

    61 

    62     // attribute content format

    63     attributeContentFormat.setForeground(Qt::red);

    64     rule.pattern = QRegExp("(\"[^\"]*\"|'[^']*')");

    65     rule.format = attributeContentFormat;

    66     highlightingRules.append(rule);

    67 

    68     commentFormat.setForeground(Qt::lightGray);

    69     commentFormat.setFontItalic(true);

    70 

    71     commentStartExpression = QRegExp("<!--");

    72     commentEndExpression = QRegExp("-->");

    73 }

    74 

    75 void XmlSyntaxHighlighter::highlightBlock(const QString &text)

    76 {

    77      foreach (const HighlightingRule &rule, highlightingRules) {

    78          QRegExp expression(rule.pattern);

    79          int index = text.indexOf(expression);

    80          while (index >= 0) {

    81              int length = expression.matchedLength();

    82              setFormat(index, length, rule.format);

    83              index = text.indexOf(expression, index + length);

    84          }

    85      }

    86      setCurrentBlockState(0);

    87 

    88      int startIndex = 0;

    89      if (previousBlockState() != 1)

    90          startIndex = text.indexOf(commentStartExpression);

    91 

    92      while (startIndex >= 0) {

    93          int endIndex = text.indexOf(commentEndExpression, startIndex);

    94          int commentLength;

    95          if (endIndex == -1) {

    96              setCurrentBlockState(1);

    97              commentLength = text.length() - startIndex;

    98          } else {

    99              commentLength = endIndex - startIndex

   100                              + commentEndExpression.matchedLength();

   101          }

   102          setFormat(startIndex, commentLength, commentFormat);

   103          startIndex = text.indexOf(commentStartExpression,

   104                                                  startIndex + commentLength);

   105      }

   106 }