public CommandThread fork(CommandShell shell, BjorneContext context) throws ShellException {
if (words.length > 0) {
CommandLine command = context.buildCommandLine(words);
command.setStreams(context.getIOs());
return shell.invokeAsynchronous(command);
} else {
return null;
}
}
@Override
public void execute() throws NameNotFoundException, ShellException, HelpException {
// The above exceptions are either bugs or configuration errors and should be allowed
// to propagate so that the shell can diagnose them appropriately.
String alias;
CommandLine commandLine = getCommandLine();
PrintWriter out = getOutput().getPrintWriter();
PrintWriter err = getError().getPrintWriter();
if (argAlias.isSet()) {
alias = argAlias.getValue();
} else if (commandLine.getCommandName() != null) {
alias = commandLine.getCommandName();
} else {
alias = "help";
}
CommandShell shell = null;
try {
shell = (CommandShell) ShellUtils.getShellManager().getCurrentShell();
CommandInfo cmdInfo = shell.getCommandInfo(alias);
Help cmdHelp = HelpFactory.getHelpFactory().getHelp(alias, cmdInfo);
if (cmdHelp == null) {
err.format(err_no_help, alias);
exit(1);
}
cmdHelp.help(out);
otherAliases(shell.getAliasManager(), alias, cmdInfo.getCommandClass().getName(), out);
} catch (HelpException ex) {
err.format(err_help_ex, alias, ex.getLocalizedMessage());
throw ex;
} catch (ShellException ex) {
err.println(ex.getMessage());
throw ex;
} catch (SecurityException ex) {
err.format(err_sec_ex, alias, ex.getLocalizedMessage());
throw ex;
}
}
public CommandShell getShell() throws ShellException {
CommandShell shell = new TestCommandShell(System.in, System.out, System.err);
shell.configureShell();
return shell;
}