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205 lines
7.9 KiB
Python
205 lines
7.9 KiB
Python
from xml.sax.saxutils import escape
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class StandOffData:
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def __init__(self, attrs):
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self.meta = attrs.get('meta', {})
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self.lookup = {tag_definition.id: tag_definition for tag_definition in
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[TagDefinition(x) for x in attrs.get('tags', [])]}
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self.annotations = [TagAnnotation(x, self.lookup) for x in
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attrs.get('annotations', [])]
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def to_vrt(self, text):
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# Devide annotations into CWB's verticalized text format (.vrt) logic
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p_attrs = [] # positional attributes
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s_attrs = [] # structural attributes
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for annotation in self.annotations:
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if annotation.name == 'token':
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p_attrs.append(annotation)
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else:
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s_attrs.append(annotation)
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# Sort annotations, necessary for the next checks
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p_attrs.sort()
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s_attrs.sort()
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# Check for p_attr<->p_attr overlap
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for i, p_attr in enumerate(p_attrs[:-1]):
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next_p_attr = p_attrs[i + 1]
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# Check if first_p_attr starts/ends within second_p_attr
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if ((p_attr.start >= next_p_attr.start) and (p_attr.start < next_p_attr.end) # noqa
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or (p_attr.end > next_p_attr.start) and (p_attr.end <= next_p_attr.end)): # noqa
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raise Exception(
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'Positional attribute overlaps another: {}<->{}'.format(p_attr.to_dict(), next_p_attr.to_dict()))
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# Check for s_attr<->p_attr overlap
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for i, s_attr in enumerate(s_attrs):
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for p_attr in p_attrs:
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# Check if s_attr starts within p_attr
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if s_attr.start > p_attr.start and s_attr.start < p_attr.end:
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# Change s_attr start to p_attr's start
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s_attrs[i].start = p_attr.start
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# Check if s_attr ends within p_attr
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if s_attr.end < p_attr.end and s_attr.end > p_attr.start:
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# Change s_attr end to p_attr's end
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s_attrs[i].end = p_attr.end
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# Check if s_attr starts/ends before/after p_attr
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if p_attr.start >= s_attr.end or p_attr.end <= s_attr.start:
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# No further Checking needed (just because p_attrs are sorted)
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break
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s_attr_start_buffer = {}
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s_attr_end_buffer = {}
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for i, s_attr in enumerate(s_attrs):
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if s_attr.start in s_attr_start_buffer:
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s_attr_start_buffer[s_attr.start].append(i)
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else:
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s_attr_start_buffer[s_attr.start] = [i]
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if s_attr.end in s_attr_end_buffer:
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s_attr_end_buffer[s_attr.end].append(i)
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else:
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s_attr_end_buffer[s_attr.end] = [i]
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vrt = ''
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vrt += '<text>\n'
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for p_attr in p_attrs:
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# s_attr_ends
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for k in {k: v for k, v in s_attr_end_buffer.items() if k <= p_attr.start}: # noqa
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s_attr_indexes = s_attr_end_buffer.pop(k)
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for s_attr_index in s_attr_indexes:
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s_attr = s_attrs[s_attr_index]
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vrt += '</{}>\n'.format(escape(s_attr.name))
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# s_attr_starts
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for k in {k: v for k, v in s_attr_start_buffer.items() if k <= p_attr.start}: # noqa
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s_attr_indexes = s_attr_start_buffer.pop(k)
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for s_attr_index in s_attr_indexes:
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s_attr = s_attrs[s_attr_index]
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foo = ''
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for property in s_attr.properties:
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foo += ' {}="{}"'.format(escape(property.name),
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escape(property.value))
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vrt += '<{}{}>\n'.format(escape(s_attr.name), foo)
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foo = {'lemma': None, 'ner': None, 'pos': None, 'simple_pos': None, 'word': None} # noqa
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for property in p_attr.properties:
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foo[property.name] = escape(property.value)
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foo['word'] = escape(text[p_attr.start:p_attr.end])
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vrt += '{word}\t{pos}\t{lemma}\t{simple_pos}\t{ner}\n'.format(
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**foo)
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vrt += '</text>\n'
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return vrt
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class TagAnnotation:
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def __init__(self, attrs, lookup):
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self.lookup = lookup
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self.tag_id = attrs['tag_id']
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if self.tag_id not in self.lookup:
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raise Exception('Unknown tag id: {}'.format(self.tag_id))
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self.start = attrs['start']
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self.end = attrs['end']
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if self.start >= self.end:
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raise Exception('start must be lower then end')
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self.properties = [
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PropertyAnnotation({**x, 'tag_id': self.tag_id}, self.lookup)
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for x in attrs.get('properties', [])
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]
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property_ids = [x.property_id for x in self.properties]
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for required_property_id in self.lookup[self.tag_id].required_properties:
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if required_property_id not in property_ids:
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raise Exception(
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'Missing required property: {}'.format(required_property_id))
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@property
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def name(self):
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return self.lookup[self.tag_id].name
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def to_dict(self):
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return {
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'tag_id': self.tag_id,
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'start': self.start,
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'end': self.end,
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'properties': [x.to_dict() for x in self.properties]
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}
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def __lt__(self, other):
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if self.start == other.start:
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return self.name == 'token' and other.name != 'token'
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else:
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return self.start < other.start
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def __le__(self, other):
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if self.start == other.start:
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return self.name == 'token' or other.name != 'token'
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else:
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return self.start < other.start
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def __eq__(self, other):
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return self.start == other.start and self.name == other.name
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def __ne__(self, other):
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return self.start != other.start and self.name != other.name
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def __gt__(self, other):
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if self.start == other.start:
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return self.name != 'token' and other.name == 'token'
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else:
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return self.start > other.start
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def __ge__(self, other):
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if self.start == other.start:
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return self.name != 'token' or other.name == 'token'
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else:
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return self.start > other.start
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class PropertyAnnotation:
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def __init__(self, attrs, lookup):
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self.lookup = lookup
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self.property_id = attrs['property_id']
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self.tag_id = attrs['tag_id']
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if self.property_id not in self.lookup[self.tag_id].properties:
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raise Exception('Unknown property id: {}'.format(self.property_id))
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self.value = attrs['value']
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# TODO: Process attrs['possibleValues'] as self.labels (no id?)
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@property
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def name(self):
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return self.lookup[self.tag_id].properties[self.property_id].name
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def to_dict(self):
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return {
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'property_id': self.property_id,
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'tag_id': self.tag_id,
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'value': self.value
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}
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class TagDefinition:
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def __init__(self, attrs):
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self.id = attrs['id']
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self.name = attrs['name']
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self.description = attrs.get('description', '')
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self.properties = {
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property_definition.id: property_definition
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for property_definition in [
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PropertyDefinition(x) for x in attrs.get('properties', [])
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]
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}
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@property
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def required_properties(self):
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return {property.id: property for property in self.properties.values()
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if property.is_required}
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class PropertyDefinition:
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def __init__(self, attrs):
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self.id = attrs['id']
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self.name = attrs['name']
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self.description = attrs.get('description', '')
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self.flags = attrs.get('flags', [])
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self.labels = attrs.get('labels', [])
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@property
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def is_required(self):
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return 'required' in self.flags
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@property
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def has_multiple_values(self):
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return 'multiple' in self.flags
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