• Gustav Westling's avatar
    encoding/base32: make NoPadding Encoding's DecodedLen return exact size · d1340ee2
    Gustav Westling authored
    CL 47341 added support for decoding non-padded messages. But DecodedLen
    still returned a multiple of 5 for messages without a padding, even
    though it is possible to calculate the len exactly when using NoPadding.
    
    This change makes DecodedLen return the exact number of bytes that
    will be written. A change to the decoding logic is also made so that it
    can handle this case.
    
    DecodedLen now has the same behaviour as DecodedLen in encoding/base64.
    
    Fixes #20854
    
    Change-Id: I729e0b1c0946c866fb675c854f835f366dd4b5a4
    Reviewed-on: https://go-review.googlesource.com/47710Reviewed-by: 's avatarBrad Fitzpatrick <bradfitz@golang.org>
    Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
    TryBot-Result: Gobot Gobot <gobot@golang.org>
    d1340ee2
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