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112 lines
3.5 KiB
112 lines
3.5 KiB
# coding=utf-8
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from __future__ import absolute_import
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import re
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import logging
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from subzero.modification.processors.re_processor import ReProcessor, NReProcessor
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import six
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logger = logging.getLogger(__name__)
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class SubtitleModification(object):
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identifier = None
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description = None
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long_description = None
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exclusive = False
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advanced = False # has parameters
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args_mergeable = False
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order = None
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modifies_whole_file = False # operates on the whole file, not individual entries
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apply_last = False
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only_uppercase = False
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pre_processors = []
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processors = []
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post_processors = []
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last_processors = []
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languages = []
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def __init__(self, parent):
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return
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def _process(self, content, processors, debug=False, parent=None, index=None, **kwargs):
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if not content:
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return
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# processors may be a list or a callable
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#if callable(processors):
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# _processors = processors()
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#else:
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# _processors = processors
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_processors = processors
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new_content = content
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for processor in _processors:
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if not processor.supported(parent):
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if debug and processor.enabled:
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logger.debug("Processor not supported, skipping: %s", processor.name)
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processor.enabled = False
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continue
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old_content = new_content
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new_content = processor.process(new_content, debug=debug, **kwargs)
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if not new_content:
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if debug:
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logger.debug("Processor returned empty line: %s", processor.name)
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break
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if debug:
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if old_content == new_content:
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continue
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logger.debug("%d: %s: %s -> %s", index, processor.name, repr(old_content), repr(new_content))
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return new_content
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def pre_process(self, content, debug=False, parent=None, **kwargs):
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return self._process(content, self.pre_processors, debug=debug, parent=parent, **kwargs)
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def process(self, content, debug=False, parent=None, **kwargs):
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return self._process(content, self.processors, debug=debug, parent=parent, **kwargs)
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def post_process(self, content, debug=False, parent=None, **kwargs):
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return self._process(content, self.post_processors, debug=debug, parent=parent, **kwargs)
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def modify(self, content, debug=False, parent=None, procs=None, **kwargs):
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if not content:
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return
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new_content = content
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for method in procs or ("pre_process", "process", "post_process"):
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if not new_content:
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return
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new_content = self._process(new_content, getattr(self, "%sors" % method),
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debug=debug, parent=parent, **kwargs)
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return new_content
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@classmethod
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def get_signature(cls, **kwargs):
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string_args = ",".join(["%s=%s" % (key, value) for key, value in six.iteritems(kwargs)])
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return "%s(%s)" % (cls.identifier, string_args)
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@classmethod
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def merge_args(cls, args1, args2):
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raise NotImplementedError
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class SubtitleTextModification(SubtitleModification):
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pass
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TAG = r"(?:\s*{\\[iusb][0-1]}\s*)*"
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EMPTY_TAG_PROCESSOR = ReProcessor(re.compile(r'({\\\w1})[\s.,-_!?]*({\\\w0})'), "", name="empty_tag")
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empty_line_post_processors = [
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# empty tag
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EMPTY_TAG_PROCESSOR,
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# empty line (needed?)
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NReProcessor(re.compile(r'^[\s-]+$'), "", name="empty_line"),
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]
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