[jira] [Closed] (IO-499) FilenameUtils.directoryContains(String, String) gives false positive when two directories exist with equal prefixes

["Gary D. Gregory (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IO-499?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gary D. Gregory closed IO-499.
------------------------------
    Resolution: Abandoned

Closing: PR closed.

> FilenameUtils.directoryContains(String, String) gives false positive when two directories exist with equal prefixes
> -------------------------------------------------------------------------------------------------------------------
>
>                 Key: IO-499
>                 URL: https://issues.apache.org/jira/browse/IO-499
>             Project: Commons IO
>          Issue Type: Bug
>    Affects Versions: 2.4
>            Reporter: Federico Bonelli
>            Priority: Minor
>
> In a folder layout as such:
> {code}
> /foo/a.txt
> /foo2/b.txt
> {code}
> The result of invoking directoryContains is wrong:
> {code}
> FilenameUtils.directoryContains("/foo", "/foo2/b.txt"); // returns true
> {code}
> even if "/foo" and "/foo2/b.txt" are the canonical paths, they start with the same characters, and the current implementation of the method fails.
> As workaround we are currently appending a path separator '/' to the first argument.
> It is noteworthy that the current implementation of FileUtils.directoryContains() reveals this issue because it uses the File.getCanonicalPath() to obtain the String paths of "/foo" and "/foo2/b.txt".



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