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81 lines
2.5 KiB
81 lines
2.5 KiB
# syntax.py
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# This is a companion file to gexync.py
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# based on https://wiki.python.org/moin/PyQt/Python%20syntax%20highlighting
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from PyQt4.QtCore import QRegExp
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from PyQt4.QtGui import QColor, QTextCharFormat, QFont, QSyntaxHighlighter
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def format(color, style=''):
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"""Return a QTextCharFormat with the given attributes.
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"""
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_color = QColor()
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_color.setNamedColor(color)
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_format = QTextCharFormat()
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_format.setForeground(_color)
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if 'bold' in style:
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_format.setFontWeight(QFont.Bold)
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if 'italic' in style:
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_format.setFontItalic(True)
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return _format
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# Syntax styles that can be shared by all languages
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STYLES = {
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'operator': format('red'),
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'string': format('magenta'),
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'comment': format('#6C8A70', 'italic'),
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'key': format('#008AFF'),
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'numbers': format('brown'),
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'section': format('black', 'bold'),
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}
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class IniHighlighter (QSyntaxHighlighter):
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# Python braces
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def __init__(self, document):
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QSyntaxHighlighter.__init__(self, document)
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rules = [
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(r'=', 0, STYLES['operator']),
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(r'\b[YN]\b', 0, STYLES['numbers']),
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# Double-quoted string, possibly containing escape sequences
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(r'"[^"\\]*(\\.[^"\\]*)*"', 0, STYLES['string']),
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# Single-quoted string, possibly containing escape sequences
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(r"'[^'\\]*(\\.[^'\\]*)*'", 0, STYLES['string']),
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# Numeric literals
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(r'\b[+-]?[0-9]+\b', 0, STYLES['numbers']),
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(r'\b[+-]?0[xX][0-9A-Fa-f]+\b', 0, STYLES['numbers']),
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(r'\b[+-]?[0-9]+(?:\.[0-9]+)?(?:[eE][+-]?[0-9]+)?\b', 0, STYLES['numbers']),
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# From '#' until a newline
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(r'#[^\n]*', 0, STYLES['comment']),
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(r'^\[.+\]', 0, STYLES['section']),
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(r'^[a-zA-Z0-9_-]+\s?=', 0, STYLES['key']),
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]
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# Build a QRegExp for each pattern
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self.rules = [(QRegExp(pat), index, fmt)
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for (pat, index, fmt) in rules]
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def highlightBlock(self, text):
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"""Apply syntax highlighting to the given block of text.
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"""
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# Do other syntax formatting
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for expression, nth, format in self.rules:
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index = expression.indexIn(text, 0)
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while index >= 0:
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# We actually want the index of the nth match
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index = expression.pos(nth)
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length = len(expression.cap(nth))
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self.setFormat(index, length, format)
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index = expression.indexIn(text, index + length)
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self.setCurrentBlockState(0)
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