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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Written by Ulrich Germann on the basis of contrib/server/client.py.
#
# This file is part of moses. Its use is licensed under the GNU Lesser General
# Public License version 2.1 or, at your option, any later version.
"""Simulate post-editing of MT output.
Incrementally updates the dynamic phrase tables in the moses server.
"""
import argparse
import os
import sys
import time
import xmlrpclib
import moses
from subprocess import (
PIPE,
Popen,
)
mserver = moses.MosesServer()
# We must perform some custom argument processing, as moses parameter
# specifications do not comply with the standards used in standard
# argument parsing packages; an isolated double dash separates script
# arguments from moses arguments
def split_args(all_args):
"""
Split argument list all_args into arguments specific to this script and
arguments relating to the moses server. An isolated double dash acts as
the separator between the two types of arguments.
"""
my_args = []
mo_args = []
arglist = mo_args
i = 0
# IMPORTANT: the code below must be coordinated with
# - the evolution of moses command line arguments
# - mert-moses.pl
while i < len(all_args):
# print i,"MY_ARGS", my_args
# print i,"MO_ARGS", mo_args
if all_args[i] == "--[":
arglist = my_args
elif all_args[i] == "--]":
arglist = mo_args
elif all_args[i] == "-i" or all_args[i] == "-input-file":
my_args.extend(["-i", all_args[i + 1]])
i += 1
elif all_args[i] == "-inputtype":
if all_args[i + 1] != "0":
# Not yet supported! Therefore:
errmsg = (
"FATAL ERROR: "
"%s only supports plain text input at this point."
% sys.argv[0])
raise Exception(errmsg)
# my_args.extend(["--input-type",all_args[i+1]])
i += 1
elif all_args[i] == "-lattice-samples":
# my_args.extend(["--lattice-sample",all_args[i+2]])
# my_args.extend(["--lattice-sample-file",all_args[i+1]])
# mo_args[i:i+3] = []
# i += 2
# This is not yet supported! Therefore:
errmsg = (
"FATAL ERROR: %s does not yet support lattice sampling."
% sys.argv[0])
raise Exception(errmsg)
elif all_args[i] == "-n-best-list":
my_args.extend(["--nbest", all_args[i + 2]])
my_args.extend(["--nbest-file", all_args[i + 1]])
i += 2
elif all_args[i] == "-n-best-distinct":
my_args.extend(["-u"])
else:
arglist.append(all_args[i])
pass
i += 1
pass
return my_args, mo_args
def interpret_args(my_args):
"""
Parse script-specific argument list.
"""
aparser = argparse.ArgumentParser()
aparser.add_argument(
"-s", "--server-cmd", default="mosesserver", dest="servercmd",
help="Path to moses server command.")
aparser.add_argument(
"--url", help="URL of external moses server.")
aparser.add_argument(
"-p", "--port", type=int, default=7447,
help="Port number to be used for server.")
# Input / output.
aparser.add_argument(
"-i", "--input", default='-', help="source file")
aparser.add_argument(
"-r", "--ref", default=None, help="Reference translation.")
aparser.add_argument(
"-a", "--aln", default=None, help="Alignment.")
aparser.add_argument(
"-o", "--output", default="-", help="Output file.")
aparser.add_argument(
"-d", "--debug", action='store_true', help="Debug mode.")
# Moses reporting options.
aparser.add_argument(
"-A", "--with-alignment", dest="A", action='store_true',
help="Include alignment in output.")
aparser.add_argument(
"-G", "--with-graph", type=bool, default=False, dest="G",
help="Include search graph info in output.")
aparser.add_argument(
"-T", "--with-transopt", type=bool, default=False, dest="T",
help="Include translation options info in output.")
aparser.add_argument(
"-F", "--report-all-factors", action="store_true", dest="F",
help="Report all factors.")
aparser.add_argument(
"-n", "--nbest", type=int, dest="nbest", default=0,
help="Size of nbest list.")
aparser.add_argument(
"-N", "--nbest-file", dest="nbestFile", default=0,
help="Output file for nbest list.")
aparser.add_argument(
"-u", "--nbest-distinct", type=bool, dest="U", default=False,
help="Report all factors.")
return aparser.parse_args(my_args)
def translate(proxy, args, line):
if type(line) is unicode:
param = {'text': line.strip().encode('utf8')}
elif type(line) is str:
param = {'text': line.strip()}
else:
raise Exception("Can't handle input")
if args.A:
param['align'] = True
if args.T:
param['topt'] = True
if args.F:
param['report-all-factors'] = True
if args.nbest:
param['nbest'] = int(args.nbest)
param['add-score-breakdown'] = True
pass
if args.U:
param['nbest-distinct'] = True
pass
attempts = 0
while attempts < 20:
t1 = time.time()
try:
return proxy.translate(param)
# except xmlrpclib.Fault as e:
# except xmlrpclib.ProtocolError as e:
# except xmlrpclib.ResponseError as e:
except xmlrpclib.Error as e:
sys.stderr.flush()
print >>sys.stderr, " XMLRPC error:", e
print >>sys.stderr, "Input was"
print >>sys.stderr, param
sys.exit(1)
except IOError as e:
print >>sys.stderr, (
"I/O error({0}): {1}".format(e.errno, e.strerror))
time.sleep(5)
except:
serverstatus = mserver.process.poll()
if serverstatus is None:
print >>sys.stderr, (
"Connection failed after %f seconds" % (time.time() - t1))
attempts += 1
if attempts > 10:
time.sleep(10)
else:
time.sleep(5)
else:
print >>sys.stderr, (
"Oopsidaisy, server exited with code %d (signal %d)"
% (serverstatus / 256, serverstatus % 256))
pass
pass
pass
raise Exception("Exception: could not reach translation server.")
def read_data(fname):
"""
Read and return data (source, target or alignment) from file fname.
"""
if fname[-3:] == ".gz":
process = Popen(["zcat", fname], stdout=PIPE)
stdout, _ = process.communicate()
foo = stdout.strip().split('\n')
else:
foo = [x.strip() for x in open(fname).readlines()]
return foo
def repack_result(idx, result):
global args
if args.nbest:
for h in result['nbest']:
fields = [idx, h['hyp'], h['fvals'], h['totalScore']]
for i in xrange(len(fields)):
if type(fields[i]) is unicode:
fields[i] = fields[i].encode('utf-8')
pass
pass
# Print fields.
print >>NBestFile, "%d ||| %s ||| %s ||| %f" % tuple(fields)
pass
if 'align' in result:
t = result['text'].split()
span = ''
i = 0
k = 0
for a in result['align']:
k = a['tgt-start']
if k:
print " ".join(t[i:k]).encode('utf8'), span,
i = k
span = "|%d %d|" % (a['src-start'], a['src-end'])
print " ".join(t[k:]).encode('utf8'), span
else:
print result['text'].encode('utf8')
if __name__ == "__main__":
my_args, mo_args = split_args(sys.argv[1:])
# print "MY ARGS", my_args
# print "MO_ARGS", mo_args
global args
args = interpret_args(my_args)
if "-show-weights" in mo_args:
# This is for use during tuning, where moses is called to get a list
# of feature names.
devnull = open(os.devnull, "w")
mo = Popen(mserver.cmd + mo_args, stdout=PIPE, stderr=devnull)
print mo.communicate()[0].strip()
sys.exit(0)
pass
if args.nbest:
if args.nbestFile:
NBestFile = open(args.nbestFile, "w")
else:
NBestFile = sys.stdout
pass
pass
ref = None
aln = None
if args.ref:
ref = read_data(args.ref)
if args.aln:
aln = read_data(args.aln)
if ref and aln:
try:
mo_args.index("--serial")
except:
mo_args.append("--serial")
pass
pass
if args.url:
mserver.connect(args.url)
else:
mserver.start(args=mo_args, port=args.port, debug=args.debug)
pass
if (args.input == "-"):
line = sys.stdin.readline()
idx = 0
while line:
result = translate(mserver.proxy, args, line)
repack_result(idx, result)
line = sys.stdin.readline()
idx += 1
else:
src = read_data(args.input)
for i in xrange(len(src)):
result = translate(mserver.proxy, args, src[i])
repack_result(i, result)
if args.debug:
print >>sys.stderr, result['text'].encode('utf-8')
pass
if ref and aln:
result = mserver.proxy.updater({
'source': src[i],
'target': ref[i],
'alignment': aln[i],
})
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