GetOptDemopublic class GetOptDemo extends Object | Simple demonstration of GetOpt. Accept the '-n' and '-o outfile'
options as shown for sort, and also -h for help. |
| Methods Summary |
|---|
| static void | doFile(java.lang.String fileName)Stub to demonstrate processine one file.
System.out.println(fileName + ' ");
| | static void | doHelp(int returnValue)Stub for providing help on usage
You can write a longer help than this, certainly.
System.err.println("Usage: GetOptDemo [-h][-n][-o outfile] file ...");
System.exit(returnValue);
| | public static void | main(java.lang.String[] args)
GetOpt go = new GetOpt("hno:");
boolean numeric_option = false;
String outFileName = "(standard output)";
char c;
while ((c = go.getopt(args)) != GetOpt.DONE) {
switch(c) {
case 'h":
doHelp(0);
break;
case 'n":
numeric_option = true;
break;
case 'o":
outFileName = go.optarg();
break;
default:
System.err.println("Unknown option character " + c);
doHelp(1);
}
}
System.out.print("Options: ");
System.out.print("Numeric: " + numeric_option + ' ");
System.out.print("Output: " + outFileName + "; ");
System.out.println("Inputs: ");
if (go.getOptInd()-1 == args.length) {
doFile("(standard input)");
} else for (int i=go.getOptInd()-1; i<args.length; i++)
doFile(args[i]);
|
|
