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/*
* IRC Parser by Warrior in compliance with RFC1459.
* If you plan to use this source code or part of it then you will have to
* agree to the following License.
* License:- http://creativecommons.org/licenses/by/2.5/in/
* You will have to give the author credit on using part or full of this
* source code.
*/
import java.io.*;
class IRC{
static IrcMsg irc_msg=new IrcMsg();
static IrcParser irc_parser=new IrcParser(irc_msg);
public static void display(){
System.out.print(irc_msg.prefix.nick+" "+irc_msg.cmd.num_reply+":"
+irc_msg.cmd.command+"\n");
for(int i=0;i<irc_msg.param_cnt;i++)
System.out.print(irc_msg.params[i]);
System.out.print("\nUser:"+irc_msg.prefix.user+" Host:"+irc_msg.prefix.host+"\n");
}
public static void main(String args[])throws IOException{
GetData lget=new GetData("raw.log");
String line;
while((line=lget.getline())!=null){
//System.out.println("Raw:-"+line);
irc_parser.irc_scan(line);
display();
}
}
}
//You can substitute this class to get data from irc server
class GetData{
String log;
FileReader file;
BufferedReader fin;
GetData(String name){
log=name;
try{
file=new FileReader(log);
fin=new BufferedReader(file);
}catch(FileNotFoundException e){
System.out.println("File not found:"+e);
System.exit(1);
}
}
String getline()throws IOException{
char c;
String line;
line=fin.readLine();
if(line==null)
fin.close();
return line;
}
}
//Idea is to create a skeleton like nested structures
class IrcMsg{
static Prefix prefix;
static Command cmd;
IrcMsg()
{
prefix=new Prefix();
cmd=new Command();
}
class Prefix{
String nick;
String user;
String host;
}
class Command{
String command;
int num_reply;
}
static String params[]=new String[15];
static int param_cnt;
}
class IrcParser{
static IrcMsg irc_msg;
IrcParser(IrcMsg irc_msg){
this.irc_msg=irc_msg;
}
boolean irc_number(char c){
return (c>='0' && c<='9');
}
boolean irc_letter(char c){
return ((c>='A' && c<='Z')||(c>='a' && c<='z'));
}
boolean irc_trail(char c){
return (c==':');
}
boolean irc_special(char c){
return ("-[]\\`^{}".indexOf(c)!=-1);
}
boolean irc_user(char c){
return ("@\r\n".indexOf(c)==-1);
}
boolean irc_host(char c){
return (irc_letter(c) || irc_number(c) || c=='.' || c=='-');
}
boolean irc_space(char c){
return (c==' ');
}
boolean irc_eol(char c){ //irc commands are generally terminated by CRLF
return (c=='\r' || c=='\n');
}
void zeromemory(){
for(int i=0;i<15;i++)
irc_msg.params[i]="";
irc_msg.param_cnt=0;
irc_msg.prefix.nick="";
irc_msg.prefix.user="";
irc_msg.prefix.host="";
irc_msg.cmd.command="";
irc_msg.cmd.num_reply=0;
}
boolean irc_scan(String irc_str){
String msg=irc_str;
String tmp="";
char c=0;
int i=0;
int n=0;
int pcnt=0;
int ncnt=0;
int t;
int len=msg.length();
zeromemory();
if(irc_trail(msg.charAt(0))){
for(i=1;i<len;i++){
c=msg.charAt(i);
if(!irc_number(c) && !irc_special(c) && !irc_letter(c) &&!irc_host(c))
break;
tmp=tmp+c;
}
irc_msg.prefix.nick=tmp;
//System.out.println("Prefix:"+tmp);
tmp="";
if(c=='!'){
for(++i;i<len;i++){
c=msg.charAt(i);
if(!irc_user(c))break;
tmp=tmp+c;
}
irc_msg.prefix.user=tmp;
//System.out.println("User:"+tmp);
tmp="";
}
if(c=='@'){
for(++i;i<len;i++){
c=msg.charAt(i);
if(!irc_host(c))break;
tmp=tmp+c;
}
irc_msg.prefix.host=tmp;
//System.out.println("Host:"+irc_msg.prefix.host);
tmp="";
}
while(irc_space(msg.charAt(i)))i++;
}
tmp="";
for(;i<len;i++){
c=msg.charAt(i);
if(!irc_letter(c) && !irc_number(c))
break;
if(irc_number(c))n=1;
tmp=tmp+c;
ncnt++;
}
if(n==1 && ncnt==3)//the numeric reply of server is only 3 digits long
irc_msg.cmd.num_reply=Integer.parseInt(tmp);
else
irc_msg.cmd.command=tmp;
//System.out.println("Command:"+irc_msg.cmd.command);
if(irc_space(c) && i<len)c=msg.charAt(++i);
tmp="";
for(;i<len;i++,pcnt++){
c=msg.charAt(i);
/*Trailing parameters can contain spaces..so break if it is a
* ':' character and continue to the next segment for handling : characters
* to eat all spaces in a single string variable
*/
if(irc_eol(c) || irc_trail(c))break;
t=i;
while(i<len && !irc_space(msg.charAt(i))) i++;
if(i>=len)break;
irc_msg.params[pcnt]=msg.substring(t,i);
}
if(irc_trail(c)){
for(i++;i<len;i++){
c=msg.charAt(i);
if(irc_eol(c))break;
tmp=tmp+c;
}
irc_msg.params[pcnt++]=tmp;
}
irc_msg.param_cnt=pcnt;
//for(i=0;i<pcnt;i++)
//System.out.println("params["+i+"]:"+irc_msg.params[i]);
return true;
}
}
//Report Bugs at this thread.
http://codecall.pastebin.com/hT8GWQyj
Warrior
Edited by Warrior, 13 May 2010 - 01:02 PM.
Better if pasted here
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