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101 lines
3.8 KiB
101 lines
3.8 KiB
# vim: fileencoding=utf-8
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#
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from .base_format import BaseFormat
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from collections import OrderedDict
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from pyparsing import Word, Literal, alphanums, printables, originalTextFor,\
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ZeroOrMore, OneOrMore, ParseException, restOfLine,\
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pyparsing_unicode, Group, Optional
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class KernelFormat(BaseFormat):
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def __init__(self, document_text: str, ignore_comments=False):
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processing_methods = [self._parse_comment_line,
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self._parse_parameter_line,
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self._parse_to_delete_line]
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super().__init__(processing_methods)
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self._ignore_comments = ignore_comments
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self._comments_processing = True
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self._format = 'kernel'
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self._last_comments_list = []
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self._initialize_parser()
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if document_text == '':
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self._document_dictionary = OrderedDict()
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else:
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documentLines = self._get_list_of_logic_lines(document_text)
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self._lines_to_dictionary(documentLines)
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def _initialize_parser(self):
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parameter_name = Word(alphanums+'_')('parameter_name')
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parameter_value = originalTextFor(
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OneOrMore(Word(printables))
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)('parameter_value')
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action_symbols = (Literal('!') | Literal('-'))
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self._parameter_line = (Group(Optional(action_symbols,
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default='')('action')
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+ parameter_name('name')
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)('parameter_name')
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+ Literal('=').suppress()
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+ parameter_value('parameter_value'))
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self._parameter_to_delete = (Group(action_symbols('action')
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+ parameter_name('name')
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)('parameter_name')
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+ restOfLine.suppress())
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self._comment_line = originalTextFor(
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Literal('#').suppress()
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+ ZeroOrMore(Word(printables
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+ pyparsing_unicode.alphanums))
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)('Comment')
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def _parse_parameter_line(self, line):
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try:
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self._item_to_add = OrderedDict()
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parsing_result = self._parameter_line.parseString(line)
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key_value = tuple(parsing_result.parameter_name.asList())
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parameter_value = parsing_result.parameter_value
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parameter_value = self._last_comments_list + [parameter_value]
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self._last_comments_list = []
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self._item_to_add[key_value] = parameter_value
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self._ready_to_update = True
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self._match = True
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except ParseException:
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return
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def _parse_to_delete_line(self, line):
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try:
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self._item_to_add = OrderedDict()
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parsing_result = self._parameter_to_delete.parseString(line)
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if parsing_result.action == '-':
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return
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key_value = (parsing_result.parameter_name.action,
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parsing_result.parameter_name.name.upper())
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parameter_value = self._last_comments_list
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self._last_comments_list = []
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self._item_to_add[key_value] = parameter_value
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self._ready_to_update = True
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self._match = True
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except ParseException:
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return
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def _parse_comment_line(self, line):
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try:
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result = self._comment_line.parseString(line)
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self._match = True
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if not self._ignore_comments:
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self._last_comments_list.append(result.Comment)
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except ParseException:
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return
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