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97 lines
3.0 KiB
97 lines
3.0 KiB
11 years ago
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# Copyright 2013 Dean Gardiner <gardiner91@gmail.com>
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from caper.objects import CaptureMatch
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from logr import Logr
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class CaptureStep(object):
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REPR_KEYS = ['regex', 'func', 'single']
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def __init__(self, capture_group, tag, source, regex=None, func=None, single=None, **kwargs):
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#: @type: CaptureGroup
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self.capture_group = capture_group
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#: @type: str
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self.tag = tag
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#: @type: str
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self.source = source
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#: @type: str
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self.regex = regex
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#: @type: function
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self.func = func
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#: @type: bool
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self.single = single
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self.kwargs = kwargs
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self.matched = False
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def execute(self, fragment):
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"""Execute step on fragment
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:type fragment: CaperFragment
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:rtype : CaptureMatch
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"""
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match = CaptureMatch(self.tag, self)
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if self.regex:
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weight, result, num_fragments = self.capture_group.parser.matcher.fragment_match(fragment, self.regex)
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Logr.debug('(execute) [regex] tag: "%s"', self.tag)
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if not result:
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return match
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# Populate CaptureMatch
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match.success = True
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match.weight = weight
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match.result = result
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match.num_fragments = num_fragments
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elif self.func:
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result = self.func(fragment)
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Logr.debug('(execute) [func] %s += "%s"', self.tag, match)
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if not result:
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return match
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# Populate CaptureMatch
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match.success = True
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match.weight = 1.0
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match.result = result
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else:
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Logr.debug('(execute) [raw] %s += "%s"', self.tag, fragment.value)
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include_separators = self.kwargs.get('include_separators', False)
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# Populate CaptureMatch
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match.success = True
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match.weight = 1.0
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if include_separators:
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match.result = (fragment.left_sep, fragment.value, fragment.right_sep)
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else:
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match.result = fragment.value
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return match
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def __repr__(self):
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attribute_values = [key + '=' + repr(getattr(self, key))
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for key in self.REPR_KEYS
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if hasattr(self, key) and getattr(self, key)]
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attribute_string = ', ' + ', '.join(attribute_values) if len(attribute_values) > 0 else ''
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return "CaptureStep('%s'%s)" % (self.tag, attribute_string)
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