File: [local] / OpenXM / src / OpenMath / OMproxy.java (download)
Revision 1.4, Thu Nov 4 18:21:42 1999 UTC (24 years, 10 months ago) by tam
Branch: MAIN
Changes since 1.3: +14 -2
lines
add debug flag
I found and heard many many bugs for OMproxy.
But I can't find where it is wrong.
So I make OMproxy to show lots of information of stack in OMproxy.
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/**
* $OpenXM: OpenXM/src/OpenMath/OMproxy.java,v 1.4 1999/11/04 18:21:42 tam Exp $
*/
import JP.ac.kobe_u.math.tam.OpenXM.*;
import java.util.Stack;
import java.io.*;
class OMproxy implements Runnable{
private OpenXM ox;
private Stack stack = new Stack();
private boolean debug = true;
public OMproxy(String host,int ControlPort,int DataPort) throws IOException{
ox = new OpenXM(this,host,ControlPort,DataPort);
}
public void run(){
OM2OXM P = new OM2OXM();
try{
while(true){
synchronized(ox){
int ox_tag = ox.receiveOXtag();
switch(ox_tag){
case OpenXM.OX_COMMAND:
StackMachine(ox.receiveSM());
break;
case OpenXM.OX_DATA:
stack.push(ox.receiveCMO());
debug("push: "+ stack.peek());
break;
}
}
}
}catch(java.io.IOException e){
System.err.println(e.getMessage());
e.printStackTrace();
}
System.out.println("breaking...");
}
public void stop(){
System.out.println("OMproxy Stoping...");
synchronized(ox){
//this.stop();
while(!stack.empty()){
stack.pop();
}
System.out.println("OMproxy Stopped");
}
}
private void SM_popCMO() throws java.io.IOException{
if(stack.empty()){
ox.send(new CMO_NULL());
}else{
ox.send(stack.pop());
}
}
private void SM_executeFunction() throws java.io.IOException{
String function_name;
CMO[] argv;
int argc = 1;
if(!(stack.peek() instanceof CMO_STRING)){
stack.push(new CMO_ERROR2());
return;
}
function_name = ((CMO_STRING)stack.pop()).getString();
//argc = ((CMO_INT32)stack.pop()).intValue();
argv = new CMO[argc];
for(int i=0;i<argc;i++){
argv[i] = (CMO)stack.pop();
}
if(argc != 1){
stack.push(new CMO_ERROR2());
return;
}
if(function_name.equals("OMXML2CMO")){
stack.push(OMXML2CMO(argv[0]));
return;
}else if(function_name.equals("CMO2OMXML")){
stack.push(CMO2OMXML(argv[0]));
return;
}
stack.push(new CMO_ERROR2());
return;
}
private void StackMachine(SM mesg) throws java.io.IOException{
debug("receive: "+mesg);
switch(mesg.getCode()){
case SM.SM_popCMO:
SM_popCMO();
break;
case SM.SM_executeFunction:
SM_executeFunction();
break;
default:
System.out.println("received "+ mesg);
}
}
private CMO CMO2OMXML(CMO obj){
String str = OM2OXM.CMO2OM(obj);
return new CMO_STRING(str);
}
private CMO OMXML2CMO(CMO obj){
OM2OXM trans = new OM2OXM();
//StringBufferInputStream stream;
ByteArrayInputStream stream;
CMO ret;
debug("OMXML2CMO called: "+ret);
if(obj instanceof CMO_STRING){
return new CMO_ERROR2();
}
try{
stream = new ByteArrayInputStream(((CMO_STRING)obj).getString().getBytes());
ret = trans.parse(stream);
}catch(IOException e){
return new CMO_ERROR2(new CMO_STRING(e.toString()));
}
debug("push: "+ret);
return ret;
}
private void debug(String str){
if(debug){
System.out.println(str);
}
}
private static String usage(){
String ret = "";
ret += "usage\t: java OMproxy [options]\n";
ret += "options\t:\n";
ret += "\t -h \t show this message\n";
ret += "\t -host hostname \t (default localhost)\n";
ret += "\t -data port \t (default 1300)\n";
ret += "\t -control port \t (default 1200)\n";
return ret;
}
public static void main(String argv[]){
String host = "localhost";
int DataPort = 1300, ControlPort = 1200;
for(int i=0;i<argv.length;i++){
if(argv[i].equals("-h")){
System.out.print(usage());
System.exit(0);
}else if(argv[i].equals("-host")){
host = argv[++i];
}else if(argv[i].equals("-data")){
DataPort = Integer.valueOf(argv[++i]).intValue();
}else if(argv[i].equals("-control")){
ControlPort = Integer.valueOf(argv[++i]).intValue();
}else{
System.err.println("unknown option : "+ argv[i]);
System.err.print(usage());
System.exit(1);
}
}
System.out.println("host(ctrl,data): "+ host
+"("+ ControlPort +","+ DataPort +")");
try{
new OMproxy(host,ControlPort,DataPort);
System.out.println("connected.");
}catch(IOException e){
System.err.println("Error occured: "+ e);
System.err.println(e.getLocalizedMessage());
System.err.println(e.getMessage());
}
}
}