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From "Remko Popma (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (GROOVY-8740) groovy.util.CliBuilder doesn't handle parse errors correctly
Date Tue, 21 Aug 2018 00:39:00 GMT

    [ https://issues.apache.org/jira/browse/GROOVY-8740?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16586711#comment-16586711
] 

Remko Popma commented on GROOVY-8740:
-------------------------------------

FYI I fixed the picocli CliBuilder so it behaves the same as the commons-cli CliBuilder.

> groovy.util.CliBuilder doesn't handle parse errors correctly
> ------------------------------------------------------------
>
>                 Key: GROOVY-8740
>                 URL: https://issues.apache.org/jira/browse/GROOVY-8740
>             Project: Groovy
>          Issue Type: Bug
>          Components: groovy-jdk
>    Affects Versions: 2.5.1
>            Reporter: Роман Донченко
>            Assignee: Paul King
>            Priority: Major
>             Fix For: 3.0.0-alpha-4, 2.5.2
>
>
> In Groovy 2.5, {{groovy.util.CliBuilder}} is a wrapper that delegates to {{groovy.cli.commons.CliBuilder}}.
However, this wrapper doesn't correctly handle the case when the arguments fail to be parsed.
> Here's how it works with the real {{CliBuilder}}:
> {code:java}
> groovy:000> options = new groovy.cli.commons.CliBuilder(stopAtNonOption: false).parse(['-x'])
> error: Unrecognized option: -x
> usage: groovy
> ===> null{code}
> And here's what happens with the wrapper:
> {code:java}
> groovy:000> options = new groovy.util.CliBuilder(stopAtNonOption: false).parse(['-x'])
> error: Unrecognized option: -x
> usage: groovy
> ===> groovy.util.OptionAccessor@6fc3e1a4
> groovy:000> options.arguments()
> ERROR java.lang.NullPointerException:
> Cannot invoke method arguments() on null object{code}
> I get an object that pretends to be {{null}}, but isn't. So I can't determine whether
the parsing was successful or not.



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