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https://issues.apache.org/jira/browse/CODEC-75?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gary Gregory resolved CODEC-75.
-------------------------------
Resolution: Fixed
Assignee: Gary Gregory
Patch applied and other changes made.
> Make Base64 URL-safe
> --------------------
>
> Key: CODEC-75
> URL: https://issues.apache.org/jira/browse/CODEC-75
> Project: Commons Codec
> Issue Type: Improvement
> Reporter: Julius Davies
> Assignee: Gary Gregory
> Fix For: 1.4
>
> Attachments: codec75.patch
>
>
> Regular Base64 uses + and / for code point 62 and 63. URL-Safe Base64 uses -
> and _ instead. Also, URL-Safe base64 omits the == padding to help preserve
> space.
> http://en.wikipedia.org/wiki/Base64#URL_applications
> Approach:
> decode() should be able to seamlessly handle either situation. This means
> interpreting +- and /_ as equivalents at any time during the decode.
> decode() also needs to be more robust against missing padding characters.
> encode() should either emit +/ or -_ depending on a mode set during Base64
> construction.
> Since URL-SAFE is all about URL's (e.g. HTTP GET) and most browsers are
> limited to 1KB of query string, I do not think we need to bother making the
> URL-MODE available in the stream-oriented classes. (Nonetheless, the streams
> should be able to decode URL-SAFE, but I don't think they should produce it).
> ---
> Some background information: I'm putting together a webapp that integrates
> with MS Active Directory. Users and Groups are keyed of objectGUID with is a
> 128 bit int. Would be nice to get some support for this kind of thing:
> "Click to view the profile of <a href='?u=_3-PwBzbRxqMi1qTBhg_6A'>Julius
> Davies</a>."
> Right now I'm using Hex:
> "Click to view the profile of <a
> href='?u=ff7f8fc01cdb471a8c8b5a9306183fe8'>Julius Davies</a>."
> Current Base64 class would output this, and I suspect the + would screw
> things up:
> "Click to view the profile of <a href='?u=/3+PwBzbRxqMi1qTBhg/6A=='>Julius
> Davies</a>."
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