80 lines
2.2 KiB
Python
80 lines
2.2 KiB
Python
# -*- coding: utf-8 -*-
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"""
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wakatime.languages
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~~~~~~~~~~~~~~~~~~
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Parse dependencies from a source code file.
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:copyright: (c) 2014 Alan Hamlett.
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:license: BSD, see LICENSE for more details.
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"""
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import logging
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from ..compat import open, import_module
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log = logging.getLogger('WakaTime')
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class TokenParser(object):
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"""The base class for all dependency parsers. To add support for your
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language, inherit from this class and implement the :meth:`parse` method
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to return a list of dependency strings.
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"""
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source_file = None
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lexer = None
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dependencies = []
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tokens = []
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def __init__(self, source_file, lexer=None):
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self.source_file = source_file
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self.lexer = lexer
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def parse(self, tokens=[]):
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""" Should return a list of dependencies.
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"""
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if not tokens and not self.tokens:
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self.tokens = self._extract_tokens()
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raise Exception('Not yet implemented.')
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def append(self, dep, truncate=True):
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self._save_dependency(dep, truncate=truncate)
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def _extract_tokens(self):
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if self.lexer:
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with open(self.source_file, 'r', encoding='utf-8') as fh:
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return self.lexer.get_tokens_unprocessed(fh.read(512000))
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return []
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def _save_dependency(self, dep, truncate=True):
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dep = dep.strip().split('.')[0].strip() if truncate else dep.strip()
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if dep:
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self.dependencies.append(dep)
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class DependencyParser(object):
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source_file = None
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lexer = None
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parser = None
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def __init__(self, source_file, lexer):
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self.source_file = source_file
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self.lexer = lexer
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if self.lexer:
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try:
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module_name = self.lexer.__module__.split('.')[-1]
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class_name = self.lexer.__class__.__name__.replace('Lexer', 'Parser', 1)
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module = import_module('.%s' % module_name, package=__package__)
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self.parser = getattr(module, class_name)
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except ImportError as ex:
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log.debug(ex)
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def parse(self):
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if self.parser:
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plugin = self.parser(self.source_file, lexer=self.lexer)
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dependencies = plugin.parse()
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return list(set(dependencies))
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return []
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