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usiclient.py
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import logging
import pexpect
import re
import sys
class UsiClient():
def __init__(self, engine, path):
self.logger = logging.getLogger(__name__)
self.logger.debug("launching the engine via pexpect.")
if sys.platform == "darwin":
self.p = pexpect.spawn("/bin/bash",cwd=path);
self.p.sendline("stty -icanon");
self.p.sendline(engine);
else:
self.p = pexpect.spawn(engine,cwd=path);
self.p.setecho(False);
self.engine = engine
self.path = path
def setOptions(self, options):
for key in options:
self.p.send("setoption name {0} value {1}\n".format(key, options[key]));
def initialize(self):
try :
self.logger.debug("initializing the engine...")
self.p.send("usi\n");
self.p.expect("usiok");
self.p.send("isready\n");
self.p.expect("readyok");
except Exception as e:
self.logger.error("Error occured during engine initialization")
self.logger.error(e)
self.logger.error(str(self.p))
def newgame(self):
self.p.send("usinewgame\n");
def go(self, moves, btime, wtime, byoyomi):
self.logger.debug("length: {0} bytes".format(len("position startpos{0}".format(moves))))
self.p.sendline("position startpos{0}".format(moves));
string = "go btime {0} wtime {1} byoyomi {2}".format(btime,wtime,byoyomi);
self.p.sendline(string);
self.p.expect("bestmove ([0-9a-i+*PLNSGRBresign]+)");
try:
inf = self.p.before.split("\n")[-2]
m = re.search(r"score cp ([0-9\-mate]+)",inf)
self.logger.info(" SCORE : {}".format(m.group(1)))
except:
try:
m = re.search(r"score ([0-9\-mate]+)",inf)
self.logger.info(" SCORE : {}".format(m.group(1)))
except:
self.logger.debug("no score given, maybe joseki move")
bm_str = self.p.after.replace("\r"," ")
if "ponder" in self.p.buffer:
pond = re.search(r"ponder ([0-9a-i+*PLNSGRB]+)", self.p.buffer).group(1)
print pond
return bm_str[9:], pond
else:
return bm_str[9:], None
def goInfinite(self, moves, ponder=False):
self.p.sendline("position startpos{0}".format(moves));
string = "go infinite";
self.p.sendline(string);
def stop(self):
self.p.sendline("stop");
self.p.expect("bestmove......");
try:
inf = self.p.before.split("\n")[-2]
m = re.search(r"score cp ([0-9\-mate]+)",inf)
self.logger.info(" SCORE : {}".format(m.group(1)))
except:
try:
m = re.search(r"score ([0-9\-mate]+)",inf)
self.logger.info(" SCORE : {}".format(m.group(1)))
except:
self.logger.error(" could not parse score")
bm_str = self.p.after.replace("\r"," ")
print bm_str[-5:]
if bm_str[-1]=="+":
return bm_str[-5:];
else:
return bm_str[-5:-1];
def goPonder(self, moves, btime, wtime, byoyomi):
self.p.sendline("position startpos{0}".format(moves));
string = "go ponder bime {0} wtime {1} byoyomi {2}".format(btime,wtime,byoyomi);
self.p.sendline(string);
def ponderHit(self):
self.p.sendline("ponderhit");
self.p.expect("bestmove ([0-9a-i+*PLNSGRBresign]+)");
try:
inf = self.p.before.split("\n")[-2]
m = re.search(r"score cp ([0-9\-mate]+)",inf)
self.logger.info(" SCORE : {}".format(m.group(1)))
except:
try:
m = re.search(r"score ([0-9\-mate]+)",inf)
self.logger.info(" SCORE : {}".format(m.group(1)))
except:
self.logger.error(" could not parse score")
bm_str = self.p.after.replace("\r"," ")
print bm_str[9:]
if "ponder" in self.p.buffer:
pond = re.search(r"ponder ([0-9a-i+*PLNSGRB]+)", self.p.buffer).group(1)
print pond
return bm_str[9:], pond
else:
return bm_str[9:], None
def ponderStop(self):
self.p.sendline("stop");
self.p.expect("bestmove ([0-9a-i+*PLNSGRBresign]+)");