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# MTUOC_truecaser
# v. 07/06/2023
# Copyright (C) 2021 Antoni Oliver
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
import sys
import codecs
import pickle
import argparse
import importlib
class Truecaser():
def __init__(self, MTUOCPath=".", tokenizer=None, tc_model=None):
self.initchars=["¡","¿","-","*","+","'",'"',"«","»","—","‘","’","“","”","„",]
if tokenizer==None:
self.tokenizer=None
else:
sys.path.append(MTUOCPath)
if tokenizer.endswith(".py"):tokenizer=tokenizer.replace(".py","")
self.module = importlib.import_module(tokenizer)
self.tokenizer=self.module.Tokenizer()
if tc_model:
self.tc_model = pickle.load(open(tc_model, "rb" ) )
else:
self.tc_model={}
def set_tc_model(self, tc_model):
self.tc_model = pickle.load(open(tc_model, "rb" ) )
def set_tokenizer(self, tokenizer):
if tokenizer.endswith(".py"):tokenizer=tokenizer.replace(".py","")
self.module = importlib.import_module(tokenizer)
self.tokenizer=self.module.Tokenizer()
def set_MTUOCPath(self, path):
sys.path.append(path)
def isinitsymbol(self, token):
if len(token)==1 and token in self.initchars:
return(True)
else:
return(False)
def detect_type(self, segment):
tipus="unknown"
if self.tokenizer==None:
tokens=segment.split(" ")
else:
tokens=self.tokenizer.tokenize(segment)
ntok=0
utokens=0
ltokens=0
leadingsplitter=False
trailingsplitter=False
leadingjoiner=False
trailingsplitter=False
for token in tokens:
token=token.replace("▁","")
token=token.replace("￭","")
if token.isalpha():ntok+=1
if token.isalpha() and token==token.lower():
ltokens+=1
elif token.isalpha() and not token==token.lower():
utokens+=1
if ntok>=5 and utokens>=ntok/2 and not segment==segment.upper():
tipus="titled"
elif segment==segment.upper():
tipus="uppercased"
else:
tipus="regular"
return(tipus)
def truecase(self, line, ucf=False, restoreCase=False):
if self.tokenizer:
tokens=self.tokenizer.tokenize_s(line).split(" ")
else:
tokens=line.split(" ")
nsegment=[]
for token in tokens:
try:
leadingsplitter=False
trailingsplitter=False
leadingjoiner=False
trailingjoiner=False
if token.startswith("▁"):leadingsplitter=True
if token.endswith("▁"):trailingsplitter=True
if token.startswith("￭"):leadingjoiner=True
if token.endswith("￭"):trailingjoiner=True
token=token.replace("▁","")
token=token.replace("￭","")
try:
nlc=self.tc_model[token.lower()]["lc"]
except:
nlc=0
try:
nu1=self.tc_model[token.lower()]["u1"]
except:
nu1=0
try:
nuc=self.tc_model[token.lower()]["uc"]
except:
nuc=0
proceed=False
if not token==token.lower(): proceed=True
if restoreCase: proceed=True
if proceed:
if nlc>0 and nlc>=nu1 and nlc>=nuc:
token=token.lower()
elif nu1>0 and nu1>nlc and nu1>nuc:
token=token.lower().capitalize()
elif nuc>0 and nuc>nlc and nuc>nu1:
token=token.upper()
if leadingsplitter:token="▁"+token
if trailingsplitter:token=token+"▁"
if leadingjoiner:token="￭"+token
if trailingjoiner:token=token+"￭"
nsegment.append(token)
except:
print("ERROR",sys.exc_info())
nsegment.append(token)
if self.tokenizer:
nsegment=self.tokenizer.detokenize_s(" ".join(nsegment))
else:
nsegment=" ".join(nsegment)
if ucf:
if self.isinitsymbol(nsegment[0]):firstchar=1
else: firstchar=0
try:
if firstchar==0:
nsegment=nsegment[firstchar].upper()+"".join(nsegment[1:])
elif firstchar==1:
nsegment=nsegment[0]+nsegment[firstchar].upper()+"".join(nsegment[2:])
except:
pass
return(nsegment)
def detruecase_old(self,line,tokenizer):
tokens=line.split(" ")
new=[]
yet=False
if tokenizer:
tokens=tokenizer.tokenize_j(line).split(" ")
else:
tokens=line.split(" ")
for token in tokens:
if not yet and token.isalpha():
yet=True
new.append(token[0].upper()+token[1:])
else:
new.append(token)
line=" ".join(new)
detrue=tokenizer.detokenize_j(line)
return(line)
def detruecase(self,line):
detruecased=line.capitalize()
return(line)
if __name__ == "__main__":
parser = argparse.ArgumentParser(description='MTUOC program for truecasing.')
parser.add_argument('-m','--model', action="store", dest="model", help='The truecasing model to use.',required=True)
parser.add_argument('-t','--tokenizer', action="store", dest="tokenizer", help='The tokenizer to used',required=False)
parser.add_argument('-u','--ucf', action="store_true", dest="ucf", help='Set if you want first word capitalized',required=False)
parser.add_argument('-r','--restore', action="store_true", dest="restore", help='Set if you want to restore case (uppercase lower cased)',required=False)
parser.add_argument('--mtuoc','--MTUOC', action="store", dest="MTUOC", help='The path to the MTUOC components',required=False)
args = parser.parse_args()
model=args.model
ucf=args.ucf
restore=args.restore
if args.MTUOC:
MTUOCPath=args.MTUOC
else:
MTUOCPath=""
truecaser=Truecaser(MTUOCPath, args.tokenizer, args.model)
for line in sys.stdin:
line=line.strip()
tcline=truecaser.truecase(line, ucf, restore)
print(tcline)
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