mosesdecoder/scripts/server/sim-pe.py
2014-05-19 23:58:54 +01:00

250 lines
8.4 KiB
Python
Executable File

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Written by Ulrich Germann on the basis of contrib/server/client.py.
# This script simulates post-editing of MT output and incrementally
# updates the dynamic phrase tables in the moses server.
import xmlrpclib,datetime,argparse,sys,os,time
import moses
from moses import MosesServer
from subprocess import *
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 "%sys.argv[0]
errmsg += "only supports plain text input at this point."
raise Exception(errsmg)
# 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 "%sys.argv[0]
errmsg += "does not yet support lattice sampling."
raise Exception(errsmg)
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",help="source file",default="-")
aparser.add_argument("-r","--ref",help="reference translation",default=None)
aparser.add_argument("-a","--aln",help="alignment",default=None)
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",
help="include alignment in output", action="store_true")
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 < 120:
try:
return proxy.translate(param)
except:
print >>sys.stderr, "Waiting", proxy
attempts += 1
time.sleep(5)
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":
foo = Popen(["zcat",fname],stdout=PIPE)\
.communicate()[0]\
.strip().split('\n')
else:
foo = [x.strip() for x in open(fname).readlines()]
pass
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
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'])
pass
print " ".join(t[k:]).encode('utf8'),span
pass
else:
print result['text'].encode('utf8')
pass
return
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
if args.url:
mserver.connect(args.url)
else:
mserver.start(args=mo_args,port=args.port,debug=args.debug)
pass
ref = None
aln = None
if args.ref: ref = read_data(args.ref)
if args.aln: aln = read_data(args.aln)
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
pass
pass
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]})
pass
pass
pass
pass