#CAS.setServerPort(5064)
import java.util.function.BiFunction as BiFunction

class ShellCommand(RegisterBase, RegisterArray):
    def __init__(self, name):
        RegisterBase.__init__(self, name)
        self.val = ""
        self.debug=False
        self.max_size = 10000

    def getSize(self):
        return 1
        
    def doRead(self):
        if self.debug:
            print "READ: ", self.val
        return self.val
        
    def doWrite(self, val):
        self.val = "RUNNING"




        
        try:
            if self.debug:            
                print "WRITE: ", val
            cmd = str(val[0])

            class eval_callback(BiFunction):
                def apply(self_callback, ret, ex):
                    try:
                        if ex is not None:
                            err=ex.message
                            if "Exception:" in err:
                                err = err[err.index("Exception:")+10:].strip()
                            self.val = "ERR:" + err  
                        else:
                            self.val = "RET:" + str(ret)  
                        self.val = self.val[0:self.max_size]
                    except:
                        err=str(sys.exc_info()[1])
                        self.val = "EXC: " + err
                    if self.debug:
                        print self.val
                                            
            #self.val = cmd           
            get_context().evalLineBackgroundAsync(cmd).handle(eval_callback())
        except:
            err=str(sys.exc_info()[1])
            if "Exception:" in err:
                err = err[err.index("Exception:")+10:].strip()
            self.val = "EXC: " + err
            self.val = self.val[0:self.max_size]
            if self.debug:
                print self.val
        

        
add_device(ShellCommand("sc"), True)
cas = CAS("TESTCAS:sc", sc, 'string')



#print caget("TESTCAS:sc","s")
#/Users/gobbo_a/anaconda3/envs/epics/epics/bin/darwin-x86