import org.apache.commons.cli.CommandLine; //导入方法依赖的package包/类
public boolean validate(final CommandLine input) {
for(Option o : input.getOptions()) {
if(Option.UNINITIALIZED == o.getArgs()) {
continue;
}
if(o.hasOptionalArg()) {
continue;
}
if(o.getArgs() != o.getValuesList().size()) {
console.printf("Missing argument for option %s%n", o.getLongOpt());
return false;
}
}
final TerminalAction action = TerminalActionFinder.get(input);
if(null == action) {
console.printf("%s%n", "Missing argument");
return false;
}
if(input.hasOption(TerminalOptionsBuilder.Params.existing.name())) {
final String arg = input.getOptionValue(TerminalOptionsBuilder.Params.existing.name());
if(null == TransferAction.forName(arg)) {
final Set actions = new HashSet(TransferAction.forTransfer(Transfer.Type.download));
actions.add(TransferAction.cancel);
console.printf("Invalid argument '%s' for option %s. Must be one of %s%n",
arg, TerminalOptionsBuilder.Params.existing.name(), Arrays.toString(actions.toArray()));
return false;
}
switch(action) {
case download:
if(!validate(arg, Transfer.Type.download)) {
return false;
}
break;
case upload:
if(!validate(arg, Transfer.Type.upload)) {
return false;
}
break;
case synchronize:
if(!validate(arg, Transfer.Type.sync)) {
return false;
}
break;
case copy:
if(!validate(arg, Transfer.Type.copy)) {
return false;
}
break;
}
}
// Validate arguments
switch(action) {
case list:
case download:
if(!validate(input.getOptionValue(action.name()))) {
return false;
}
break;
case upload:
case copy:
case synchronize:
if(!validate(input.getOptionValue(action.name()))) {
return false;
}
break;
}
return true;
}