[jira] [Created] (IO-770) FilenameUtils#getFullPathNoEndSeparator has issues with windows and underscore in hostname

["Sita Geßner (Jira)" <ji...@apache.org>]

Sita Geßner created IO-770:
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             Summary: FilenameUtils#getFullPathNoEndSeparator has issues with windows and underscore in hostname
                 Key: IO-770
                 URL: https://issues.apache.org/jira/browse/IO-770
             Project: Commons IO
          Issue Type: Bug
          Components: Utilities
    Affects Versions: 2.11.0, 2.10.0, 2.9.0, 2.8.0, 2.7
            Reporter: Sita Geßner


After updating commons-io to version 2.11.0 there is an issue with FilenameUtils#getFullPathNoEndSeparator only when using Windows.

When using Linux there are no problems.

getFullPathNoEndSeparator returns  null if the hostname of the path contains an underscore. This issue occured since version 2.7


{code:java}
    private static void commonsIo() {
        final String result = getSubFolderFromFile(new File("\\\\sub_1.example.com\\path\\subfolder\\test.pdf"));
        // Fails in common-io:2.11.0 b/c result is null.
        System.out.println("result should be \"subfolder\", but it is: " + result);
    }

    private static String getSubFolderFromFile(final File file) {
        return FilenameUtils.getBaseName(FilenameUtils.getFullPathNoEndSeparator(file.getAbsolutePath()));
    }
{code}

We know hostnames are not supposed to have underscores, but windows allows it and  unfortunatly we have to deal with this.



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