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public class Command { | |
static final int CMD_LET = 0; | |
static final int CMD_DOC = 1; | |
static final int CMD_PRINT = 2; | |
static final int CMD_DO = 3; | |
static final int CMD_HISTORY = 4; | |
static final int CMD_END = 5; | |
static final int INVALID = 6; | |
String s; | |
String b; | |
public Command(String s){ | |
this.s = s; | |
b = s.toLowerCase(); | |
} | |
public int getCommand(){ | |
if(b.substring(0,3) == "let") | |
return(CMD_LET); | |
if(b.substring(0,3) == "doc" && b.substring(0,2) != "do") | |
return(CMD_DOC); | |
if(b.substring(0,5) == "print") | |
return(CMD_PRINT); | |
if(b.substring(0,2) == "do") | |
return(CMD_DO); | |
if(b.substring(0,7) == "history") | |
return(CMD_HISTORY); | |
if(b.substring(0,3) == "end") | |
return(CMD_END); | |
else{ return(INVALID); | |
} | |
} | |
public String getArg(){ | |
if(getCommand() == 0) | |
return(s.substring(4)); | |
if(getCommand() == 1) | |
return(s.substring(4)); | |
if(getCommand() == 2) | |
return(s.substring(6)); | |
if(getCommand() == 3) | |
return(s.substring(3)); | |
if(getCommand() == 4) | |
return(s.substring(8)); | |
if(getCommand() == 5) | |
return(s.substring(4)); | |
if(getCommand() == 6) | |
return(""); | |
else{ return(""); | |
} | |
} | |
} |
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