# -*- encoding: utf-8 -*-
# License: FreeBSD License or The BSD 2-Clause License
# Copyright (c) 2012, Leo Jiang
# All rights reserved.
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
# Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
# Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
# Author: Leo Jiang <leo.jiang.dev@gmail.com>
# pylint: disable=I0011,C0301,C0103
"""
Tokenizer Module for Stanford Segmenter
"""
import codecs
import os.path
import sys
from subprocess import call
from corpustools.lib.languagecode import LanguageCode
[docs]def tokenize(infile, outfile, lang, tools, step):
"""Call Stanford Segmenter for Chinese text.
:param infile: input filename.
:param outfile: output filename.
:param lang: corpus language.
:param tools: external tools configuration.
:param step: tokenizer configuration in step.
"""
script = os.path.join(tools["stanford_segmenter.path"], 'segment.sh')
xxlang = LanguageCode(lang).xx_XX()
options = step["tool"][xxlang]
model = options["model"]
nbest = str(options["nbest"])
kws = options["keep_whitespace"]
cmdline = [script, model, infile, "UTF-8", nbest]
if kws:
cmdline.insert(1, "-k")
out_fp = codecs.open(outfile, 'w', 'utf-8')
try:
ret = call(cmdline, stdout=out_fp)
except OSError as e:
print e, ":", script
sys.exit(e.errno)
finally:
out_fp.close()
return ret