Source Code for Module node_manager_fkie.editor.yaml_highlighter

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  3  # Copyright (c) 2012, Fraunhofer FKIE/US, Alexander Tiderko 
  4  # based on code of Timo Roehling 
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 33   
 34  from python_qt_binding.QtCore import QRegExp, Qt 
 35  from python_qt_binding.QtGui import QColor, QFont, QSyntaxHighlighter, QTextCharFormat 
 36   
 37   
 38 -class YamlHighlighter(QSyntaxHighlighter): 
 39      ''' 
 40      Enabled the syntax highlightning for the yaml files. 
 41      ''' 
 42   
 43 -    def __init__(self, parent=None): 
 44          QSyntaxHighlighter.__init__(self, parent) 
 45          self.rules = [] 
 46          self.commentStart = QRegExp("#") 
 47          self.commentEnd = QRegExp("\n|\r") 
 48          self.default_format = QTextCharFormat() 
 49          self.default_format.setForeground(QColor(24, 24, 24)) 
 50          self.commentFormat = QTextCharFormat() 
 51          self.commentFormat.setFontItalic(True) 
 52          self.commentFormat.setForeground(Qt.darkGray) 
 53   
 54          tagList = ["\\btrue\\b", "\\bfalse\\b"] 
 55          # create patterns for tags 
 56          for tag in tagList: 
 57              self.rules.append((self._create_regexp(tag), self._create_format(Qt.blue))) 
 58   
 59          # create pattern for digits 
 60          self.rules.append((self._create_regexp("\\d+"), self._create_format(QColor(127, 64, 127)))) 
 61   
 62          # create pattern for params 
 63          self.rules.append((self._create_regexp("^\s*[_.\w]*\s*:"), self._create_format(Qt.darkBlue))) 
 64   
 65          # create pattern for params 
 66          self.rules.append((self._create_regexp(":\s*:[_\.\w]*$|:\s*\@[_\.\w]*$"), self._create_format(Qt.darkBlue))) 
 67   
 68          # create pattern for list signes 
 69          self.rules.append((self._create_regexp("^\s*-"), self._create_format(Qt.darkRed, 'bold'))) 
 70   
 71          # create pattern for ??? 
 72          self.rules.append((self._create_regexp("^---$"), self._create_format(Qt.darkRed))) 
 73   
 74          # create pattern for braces 
 75          self.rules.append((self._create_regexp("[\[\]\{\}\,]"), self._create_format(Qt.darkGreen))) 
 76   
 77          # create patterns for strings 
 78          self.rules.append((self._create_regexp("\".*\"|\'.*\'"), self._create_format(Qt.blue))) 
 79   
 80          # create patterns for substitutions 
 81          self.rules.append((self._create_regexp("\\$\\(.*\\)"), self._create_format(QColor(127, 64, 127)))) 
 82   
 83          # create patterns for DOCTYPE 
 84          self.rules.append((self._create_regexp("<!DOCTYPE.*>"), self._create_format(Qt.lightGray))) 
 85          self.rules.append((self._create_regexp("<\\?xml.*\\?>"), self._create_format(Qt.lightGray))) 
 86   
 87 -    def highlightBlock(self, text): 
 88          self.setFormat(0, len(text), self.default_format) 
 89          for pattern, form in self.rules: 
 90              index = pattern.indexIn(text) 
 91              while index >= 0: 
 92                  length = pattern.matchedLength() 
 93                  self.setFormat(index, length, form) 
 94                  index = pattern.indexIn(text, index + length) 
 95   
 96          # mark comment blocks 
 97          self.setCurrentBlockState(0) 
 98          startIndex = 0 
 99          if self.previousBlockState() != 1: 
100              startIndex = self.commentStart.indexIn(text) 
101              if startIndex >= 0: 
102                  commentLength = len(text) - startIndex 
103                  self.setFormat(startIndex, commentLength, self.commentFormat) 
104   
105 -    def _create_regexp(self, pattern=''): 
106          _regexp = QRegExp() 
107          _regexp.setMinimal(True) 
108          _regexp.setPattern(pattern) 
109          return _regexp 
110   
111 -    def _create_format(self, color, style=''): 
112          _format = QTextCharFormat() 
113          _format.setForeground(color) 
114          if 'bold' in style: 
115              _format.setFontWeight(QFont.Bold) 
116          else: 
117              _format.setFontWeight(QFont.Normal) 
118          if 'italic' in style: 
119              _format.setFontItalic(True) 
120          return _format 
121