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#!/usr/bin/env python
import sys
import langdetect
from_stdin = False
if sys.argv[1] == '-':
f = sys.stdin
from_stdin = True
else:
f = open(sys.argv[1], 'r')
try:
l = sys.argv[2].strip()
except:
l = None
try:
min_p = max(0.0, min(1.0, float(sys.argv[3].strip())))
if min_p == 0.0:
min_p = None
except:
min_p = None
try:
strict = bool(sys.argv[4].strip())
except:
strict = False
if min_p and not l:
l = None
if strict and not min_p:
strict = False
factory = langdetect.detector_factory.DetectorFactory()
factory.load_profile(langdetect.detector_factory.PROFILES_DIRECTORY)
factory.set_seed(31337)
for line in f:
try:
detector = factory.create()
detector.append(line.strip())
ld = detector.get_probabilities()
except:
print("unk")
continue
done = False
if l and len(ld) > 1:
if min_p != None:
for i in ld:
if i.lang == l:
if i.prob >= min_p:
print(i.lang)
done = True
break
else:
if l in map(lambda x: x.lang, ld):
print(l)
continue
if not done:
if not strict:
print(ld[0].lang)
else:
if ld[0].prob >= min_p:
print(ld[0].lang)
else:
print("unk")
if not from_stdin:
f.close
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