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Re: Bytea/Base64 encoders for libpq - interested?

From: Karel Zak <zakkr(at)zf(dot)jcu(dot)cz>
To: Joerg Hessdoerfer <Joerg(dot)Hessdoerfer(at)sea-gmbh(dot)com>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Bytea/Base64 encoders for libpq - interested?
Date: 2001-08-28 09:55:28
Message-ID: 20010828115528.A12403@zf.jcu.cz (view raw or flat)
Thread:
Lists: pgsql-hackerspgsql-patches
On Tue, Aug 28, 2001 at 11:07:32AM +0200, Joerg Hessdoerfer wrote:
> Hi!
> 
> Please find attached some very simple encoders/decoders for bytea and base64.
> Bytea encoder is very picky about what it leaves unescaped - basically the 
> base64
> char set ;-)
> 
> Since this seems to be a very poorly documented but much asked-for thing, I 
> thought
> you would maybe like to add this code to libpq (so that everyone benefits).
> 
> I'm aware that function renames might be necessary, though.
> If you like, I could make the code fit into libpq, and send diffs.
> 
> Any comments/interests?

 What implement base64 PostgreSQL datetype that use externaly base64 and
internaly same things as bytea. It prevent FE and parser problems with
"bad" chars and internaly for data storage save less space than text
with base64. Of course it doesn't solve a problem with encoding/decoding 
data in your application to/from base64. May be implement for this
datetype cast to/from bytea too.

 SELECT my_bytea::base64 FROM foo;

 INSERT INTO foo (my_bytea) VALUES ('some_base64_string'::bytea);

 And you can still fetch all data directly in batea by binary cursor. 

 Comments?

		Karel
-- 
 Karel Zak  <zakkr(at)zf(dot)jcu(dot)cz>
 http://home.zf.jcu.cz/~zakkr/
 
 C, PostgreSQL, PHP, WWW, http://docs.linux.cz, http://mape.jcu.cz

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