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neufpas_66702's avatar
neufpas_66702
Icon for Nimbostratus rankNimbostratus
May 25, 2011

strip trailing slashes

Given a string with an arbitrary number of slashes (HTTP::path for example), how do I remove the final slash if it has one? I'm testing with ends_with "/" but after that... I've got nothing. I'm sure it's possible, but I honestly can't figure it out. This should be easy but it doesn't appear to be given the tools provided.

 

 

Any help?

 

 

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  • hooleylist's avatar
    hooleylist
    Icon for Cirrostratus rankCirrostratus
    May 26, 2011
    Hi neufpas,

     

     

    You can use [string range $uri 0 end-1] to do this:

     

     

    set uri "/test/with/training/slash/" if {$uri ends_with "/"}{ log local0. "\$uri: $uri, stripped: [string range $uri 0 end-1]" }

     

     

    $uri: /test/with/training/slash/, stripped: /test/with/training/slash

     

     

    Aaron
  • neufpas_66702's avatar
    neufpas_66702
    Icon for Nimbostratus rankNimbostratus
    May 26, 2011
    Thank you! I read through as much of the documentation as I could find and I never saw anything about being able to do "end-1". That should be documented somewhere.
  • hooleylist's avatar
    hooleylist
    Icon for Cirrostratus rankCirrostratus
    May 26, 2011
    It's not described in detail in the string range section of the string man page but it's in the string index portion:

     

     

     

    http://www.tcl.tk/man/tcl8.4/TclCmd/string.htmM12

     

     

    end-integer

     

    The last char of the string minus the specified integer offset (e.g. end-1 would refer to the "c" in "abcd").

     

     

     

    Aaron