Re: [Boost-users] base 64 encoding

From: Robert Ramey (ramey_at_[hidden])
Date: 2008-01-04 11:58:21

Take a look at basic_text_oprimitive.ipp around line # 64.

Note that I add "padding" here to address this problem.  Perhaps that is the missing
magic.  Hmmm. perhaps that code should be part of the iterator.

Also look at the code text_iterators_base64 in the serialization test suite.

Robert Ramey

  "Eames, Andrew" <andrew_at_[hidden]> wrote in message news:8F37BF6F420455468C4BD57DD6BE199004C6146B_at_cobra.pc.cognex.com...
  But there is still the problem with running off the end of the source - If the source is not a multiple of 3 bytes then the input iterator will run off the end of the input sequence which can cause an error. 

    Andrew

   

  From: boost-users-bounces_at_[hidden] [mailto:boost-users-bounces_at_[hidden]] On Behalf Of Robert Ramey
  Sent: Thursday, January 03, 2008 6:47 PM
  To: boost-users_at_[hidden]
  Subject: Re: [Boost-users] base 64 encoding

   

  I had to separately record the number of bytes.  Then when I decode, just pull off that number of bytes.

   

  Robert Ramey

   

    "Eames, Andrew" <andrew_at_[hidden]> wrote in message news:8F37BF6F420455468C4BD57DD6BE199004C613F8_at_cobra.pc.cognex.com...

    Hi,

    I'm trying to encode base64 data by composing base64_from_binary with transform_width but this doesn't appear to work correctly when the data is not a multiple of 3 long. What is the correct way to handle this  - do I have to handle the padding myself by extending the input data and then patching the tail of the result?

       Thanks

           Andrew

     

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