/**
* Perform the 'alias' command.
*
* @param session JSwat session on which to operate.
* @param args Tokenized string of command arguments.
* @param out Output to write messages to.
*/
public void perform(Session session, CommandArguments args, Log out) {
CommandManager cmdman = (CommandManager) session.getManager(CommandManager.class);
if (args.hasMoreTokens()) {
String aliasName = args.nextToken();
if (args.hasMoreTokens()) {
// Grab rest of string as alias value.
// Be sure to preserve the quotes and escapes.
args.returnAsIs(true);
String alias = args.rest().trim();
if (alias.charAt(0) == '"' && alias.charAt(alias.length() - 1) == '"') {
// Must remove the enclosing quotes because the
// command parser doesn't handle that.
alias = alias.substring(1, alias.length() - 1);
}
// Add the command alias to the list.
cmdman.createAlias(aliasName, alias);
out.writeln(Bundle.getString("alias.defined") + ' ' + aliasName);
} else {
// One argument, show the alias definition.
String alias = cmdman.getAlias(aliasName);
if (alias == null) {
throw new CommandException(Bundle.getString("alias.undefined") + ' ' + aliasName);
} else {
out.writeln("alias " + aliasName + ' ' + alias);
}
}
} else {
// No arguments, show the defined aliases.
cmdman.listAliases();
}
} // perform
