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POMatching file paths regardless of network protocol
 

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  1. POMatching file paths regardless of network protocol
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    <p>I am developing a tool that deletes files on network paths based on several conditions. I would like to exclude certain paths from being checked and am having trouble finding a suitable method.</p> <p>Some of the paths the program handles are as follows:</p> <pre><code>nfs_path = "nfs://Sharepoint/Path/to/Folder/File.ext" smb_path = "smb://SERVER/Sharepoint/Path/to/Folder/File.ext" afp_path = "afp://server/Sharepoint/Path/to/Folder/File.ext" upnp_path = "upnp://277b787b-5b27-b46f-1687-91100ada8d1f/Path/to/Folder/File.ext" exclusion = "smb://user:pass@server/E/Downloads/Path/to/Folder" </code></pre> <p>As you can see some of the paths use credentials, while others do not. These network paths should be able to be matched to one another.</p> <p>In short, I would like to get confirmation that <code>File.ext</code>, using any protocol, is part of <code>Folder</code> (which I excluded from checking). Since I'm not an expert with path manipulation or regular expressions, I'm in a bind. I attempted the regex below, which fails for the NFS path since it takes the share name (<code>E</code>) too. It completely fails for the UPnP paths, because of their totally different nature.</p> <pre><code>"(?P&lt;protocol&gt;((smb|nfs|afp|upnp)://((.+:.+@)?.+?/)?))?(?P&lt;directory&gt;.+)" </code></pre> <p>I also tried using the <code>os.path</code> module, but the methods seem not suitable. </p> <p>While waiting for an answer that is more efficient, I built a correctly parsing regex that will only capture the folder structure and ignore the prefix:</p> <pre><code>"(?:smb|afp|nfs|upnp)://(?:(?:.+):(?:.+)@)?(?:.+?)/(?P&lt;tail&gt;.*)$" </code></pre> <p>Could anyone point me in the direction of a more efficient approach? I think this will be too memory consuming to test for a lot of different files.</p> <p>It needs to work on python 2.6 or lower, since it is an addon to an existing program.</p>
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    1. USGeert Smelt
    1. USGeert Smelt
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    1. COWhy do you single out NFS as taking the share name when smb and even local path also include the 'E'? Does it always have the E? Could you split on the first 'E' and take the rest of the string as the path, stripping an optional ':' in the beginning, to account for the local_path?
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      1. POMatching file paths regardless of network protocol
      1. USPaulo Almeida
    2. COOnly when I use the NFS as input for the regex, will it also eat the `E`. All other paths I mentioned work fine, because the regex assumed a server name, which NFS doesn't use. The name of the share varies, as does the file name. The user selects a path to be excluded from checking. If there are files on that path, then they should not be deleted.
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      1. POMatching file paths regardless of network protocol
      1. USGeert Smelt
    3. COHave you seen `os.path.splitunc`? I'm not on Windows, so I can't test it.
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      1. POMatching file paths regardless of network protocol
      1. USPaulo Almeida
 

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