Hi Richard, I don't know of any base64 decode function in Gambas, but then I didn't look that hard ;-)
There are various different flavours of base64, so be sure you know which variant you're dealing with. I enclose with this mail a source archive of a little project I've put together (sorry, it's Gambas2, hope that's OK) that demonstrates decoding (and encoding) of base64 data. I found the information on how to put together the encode and decode algorithms here: http://en.wikipedia.org/wiki/Base64 There's also a reference to base64 in Gambas here: http://www.gambasforum.com/index.php?topic=330.0 The algorithms given in those code snippets could well be far more efficient than mine. My Base64 Project ----------------- First thing to try is just hit the Encode button, it should convert the text in the top textarea into base64 and place the result in the lower textarea. Generally, if the In textbox is blank, the input for Encode or Decode will be the upper textarea, and if the Out textbox is blank, the output of the Encode or Decode will be shown in the lower textarea. To encode binary data, you'll need to use a file as input, so use the In textbox to specify the file name. To decode base64 that represents binary data, you'll need to use a file as output, so use the Out textbox to specify the output file name. You can try out binary to base64 using fluffy.jpg (shipped with the project) as your In file. To test round-trip (so start with a binary, encode it to base64, then decode the base64 data to make an identical binary)... enter fluffy.jpg in the In textbox, blank the Out textbox, hit Encode. In the lower textarea Select All, Copy... then in the upper textarea Paste. Now clear the In textbox and enter coffee.jpg in the Out textbox. Hit Decode. You *should* find a new file in your Base64 project directory called coffee.jpg, and it *should* be identical to the fluffy.jpg shipped with the project. I'm not convinced that my completely untuned, horribly inefficient algorithms in Gambas will be the best way to go if speed is of the essence or if the pdf files are gonna be more than a few 100 kbs... you might find it quicker/more robust to call out to a built-in function in java/python/some other program... Anyways, all the (commented) source is there for you to see/fiddle with...so have fun, but if you have any questions, just give me a shout. Regards, Caveat On Thu, 2011-04-28 at 07:38 +1000, Ian Haywood wrote: > No, HL7 parsing is fine, let me restate the question: does gambas have > an inbuilt function to > decode base 64 data? > > Ian > > On Thu, Apr 28, 2011 at 3:48 AM, nando <nand...@nothingsimple.com> wrote: > > Health Level 7 file format > > To start visit: > > http://en.wikipedia.org/wiki/Health_Level_7 > > > > > > ---------- Original Message ----------- > > From: richard terry <rte...@pacific.net.au> > > To: mailing list for gambas users <gambas-user@lists.sourceforge.net> > > Sent: Wed, 27 Apr 2011 18:13:57 +1000 > > Subject: [Gambas-user] Base 64 question > > > >> Hi list, > >> > >> I've a HL7 file apparently with embedded base64 data (as a pdf) I wondered > >> if > >> there iwas any way to de-encode the data, if that is the right syntax. > >> > >> Regards > >> > >> Richard > >> > >> ------------------------------------------------------------------------------ > >> WhatsUp Gold - Download Free Network Management Software > >> The most intuitive, comprehensive, and cost-effective network > >> management toolset available today. Delivers lowest initial > >> acquisition cost and overall TCO of any competing solution. > >> http://p.sf.net/sfu/whatsupgold-sd > >> _______________________________________________ > >> Gambas-user mailing list > >> Gambas-user@lists.sourceforge.net > >> https://lists.sourceforge.net/lists/listinfo/gambas-user > > ------- End of Original Message ------- > > > > > > ------------------------------------------------------------------------------ > > WhatsUp Gold - Download Free Network Management Software > > The most intuitive, comprehensive, and cost-effective network > > management toolset available today. Delivers lowest initial > > acquisition cost and overall TCO of any competing solution. > > http://p.sf.net/sfu/whatsupgold-sd > > _______________________________________________ > > Gambas-user mailing list > > Gambas-user@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/gambas-user > > > > ------------------------------------------------------------------------------ > WhatsUp Gold - Download Free Network Management Software > The most intuitive, comprehensive, and cost-effective network > management toolset available today. Delivers lowest initial > acquisition cost and overall TCO of any competing solution. > http://p.sf.net/sfu/whatsupgold-sd > _______________________________________________ > Gambas-user mailing list > Gambas-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/gambas-user
Base64-0.0.1.tar.gz
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