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server.py
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server.py
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import corr_ext
import re
import sys
import urlparse
from BaseHTTPServer import BaseHTTPRequestHandler, HTTPServer, HTTPServer
from SocketServer import ThreadingMixIn
import json
import traceback
from werkzeug.wrappers import Request, Response
from werkzeug.serving import run_simple
from jsonrpc import JSONRPCResponseManager, dispatcher
class AnnotatableSequence(object):
def __init__(self, sequence):
self.sequence = sequence
self.annotations = []
self.alarm = True
def Annotate(self, range_start, range_end, tag):
if range_start > range_end:
if self.alarm:
raise ValueError
else:
return
for start, end, symbol in self.annotations:
if start <= range_start < end or start < range_end < end:
if self.alarm:
raise ValueError("Overlap in sequence: %r and %r" % (
(start, end), (range_start, range_end)))
else:
return
if range_start > len(self.sequence) or range_end < 0:
if self.alarm:
raise ValueError("The new annotation is out of range %r" % (
(range_start, range_end),))
else:
return
self.annotations.append((range_start, range_end, tag))
def GetSegments(self):
self.annotations.sort()
segments = []
prev_end = 0
for i in range(len(self.annotations)):
start, end, tag = self.annotations[i]
if start != prev_end:
assert start > prev_end
segments.append((self.sequence[prev_end:start], None))
segments.append((self.sequence[start:end], tag))
prev_end = end
if prev_end < len(self.sequence):
segments.append((self.sequence[prev_end:], None))
return segments
def SetOverlapAlarm(self, alarm_on):
self.alarm = alarm_on
def GetErrorDesc(err_tp):
error_types = {
"F" : "wrong %s form",
"M" : "%s missing",
"R" : "%s needs replacing",
"U" : "unnecessary %s",
"D" : "%s wrongly derived",
"C" : "%s countability",
"FF" : "false %s friend",
"AG" : "%s agreement",
"AS" : "argument structure",
"CE" : "compound error",
"CL" : "collocation error",
"ID" : "idiom error",
"IN" : "incorrect noun plural",
"IV" : "incorrect verb inflection",
"L" : "inappropriate register",
"S" : "spelling",
"SA" : "American spelling",
"SX" : "spelling confusion",
"TV" : "wrong verb tense",
"W" : "word order",
"X" : "incorrect formation of negative",
}
word_classes = {
"A" : "pronoun",
"C" : "conjunction",
"D" : "determiner",
"J" : "adjective",
"N" : "noun",
"Q" : "quantifier",
"T" : "preposition",
"V" : "verb",
"Y" : "adverb",
"P" : "punctuation"
}
error_type_reg = "(%s)" % ("|".join(error_types))
word_class_reg = "(%s)" % ("|".join(word_classes))
mo = re.match('^%s%s$' % (error_type_reg, word_class_reg), err_tp)
if mo is not None:
if "%s" in error_types[mo.group(1)]:
return error_types[mo.group(1)] % word_classes[mo.group(2)]
else:
return error_types[mo.group(1)]
mo = re.match('^%s$' % error_type_reg, err_tp)
if mo is not None:
if "%s" in error_types[mo.group(1)]:
return " ".join((error_types[mo.group(1)] % "").split())
else:
return error_types[mo.group(1)]
return err_tp
def ExtractChunks(orig_words, revised_into_words):
corrections = corr_ext.ExtractCorrections(orig_words, revised_into_words)
ann_seq = AnnotatableSequence(orig_words)
for tp, s, e, rev_into in corrections:
ann_seq.Annotate(s, e, (rev_into, tp))
segments = ann_seq.GetSegments()
result = []
for seg, annot in segments:
if annot is None:
rev_into, tp = None, None
else:
rev_into, tp = annot
result.append([" ".join(seg), rev_into, tp and GetErrorDesc(tp) or None])
return result
def Tokenize(rev_sent):
suf = []
if rev_sent.endswith('.'):
suf.append('.')
rev_sent = rev_sent[:-1]
return rev_sent.split() + suf
@dispatcher.add_method
def CorrDet(orig_sentence, revised_sentence):
orig_words = Tokenize(orig_sentence)
revised_into_words = Tokenize(revised_sentence)
return ExtractChunks(orig_words, revised_into_words)
@Request.application
def application(request):
# Dispatcher is dictionary {<method_name>: callable}
response = JSONRPCResponseManager.handle(
request.data, dispatcher)
rv = Response(response.json, mimetype='application/json')
rv.headers.add('Access-Control-Allow-Origin', '*')
rv.headers.add('Access-Control-Allow-Methods',
'GET,PUT,POST,DELETE,PATCH')
rv.headers.add('Access-Control-Allow-Headers',
'Content-Type, Authorization')
return rv
if __name__ == '__main__':
run_simple('0.0.0.0', 8085, application)