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Groups > microsoft.public.scripting.vbscript > #12191
| From | "Mayayana" <mayayana@invalid.nospam> |
|---|---|
| Newsgroups | microsoft.public.scripting.vbscript |
| Subject | Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used |
| Date | 2019-09-16 09:55 -0400 |
| Organization | A noiseless patient Spider |
| Message-ID | <qlo4ac$h2v$1@dont-email.me> (permalink) |
| References | <oslw59d5yyzg.lp5zzahpop8v.dlg@40tude.net> <qlmu44$hsn$1@dont-email.me> <yxnc9tjx6h08.1eeh79d5qe2mp$.dlg@40tude.net> |
"JJ" <jj4public@vfemail.net> wrote | > You don't need all that stuff. Base-64 is actually a fairly | > simple math operation. There's no need to call in a special | > component to do that part. | | Actually, I need it for performance reason. VBScript is too slow in | comparison with native code. You must be doing some very big conversions. Then why not do it in VB? That's actually how I got my code. I'd needed to do it in VB at one point and later just translated that to VBS. But you're right that it's not terribly fast. It's pretty much instant for a typical attachment or email content, but I'd never had occasion to use it for big things. So I just now tested it. 135 KB - .4 seconds to encode. .3 secondes to decode 470 KB - 1.7 seconds to encode. 1.1 seconds to decode 3.6 MB - 13 seconds to encode. 9.2 seconds to decode. So it's pretty limited past 1 MB or so. The MSXML/adodb version is much faster to encode. But as you say, it doesn't actually work for a binary file. When I tried it on a 4.3 MB Bible in plain text it was still fast to encode. .2 seconds. But oddly it takes 8.3 seconds to decode. Not much faster than the VBS. I see at least a couple of problems with that code. * For your decoding the load isn't a problem, but to encode it won't work to do a ReadAll. It will stop at the first null. * The code is only designed for string conversion. The author calls functions "StringtoBinary" and "BinarytoString", but that's just confusing. There's no binary data involved. Base64 is, by definition, not binary data. * ADODB, like FSO, takes a lot of the functionality out of your hands. For a text stream I think you could use something like "Windows-1252" to get 8-bit translation. Anything that's ANSI and not ASCII. That might work. But when I tried it it's still failing. It also fails if I set the load type to text. (Why is the text loaded as binary when it isn't?) And it fails if I set the write type to binary. I'm guessing the problem may be because ADODB, like FSO and TS, second guesses what you're doing. But I'm not sure. I've rarely used ADODB and I'm not clear about how it handles data. The code you're using was only designed to work with a text string, which of course is rarely what people are doing with Base64. That stuff drives me crazy. People post code that works rather than what's needed. What good is base-64 conversion that won't work with binary data? One could use it to lightly encode something like an email address. That's about it. Another great example of this is SetupIterateCabinet from setupapi.dll. When I needed CAB file operations I searched all over. Everyone in VB said SetupIterateCabinet was the method. The only method. I finally figured out that I was having problems with it because it can only handle 1 or 3 CAB types. CAB functions are in cabinet.dll. setupapi.dll is just a wrapper for Microsoft setups. Since cabinet.dll is CDECL and VB can't call it directly, everyone just pretended that SetupIterateCabinet worked!
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ADODB.Stream binary array to binary string failed unless x-user-defined is used JJ <jj4public@vfemail.net> - 2019-09-16 08:23 +0700
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used "Mayayana" <mayayana@invalid.nospam> - 2019-09-15 23:03 -0400
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used GS <gs@v.invalid> - 2019-09-15 23:58 -0400
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used "Mayayana" <mayayana@invalid.nospam> - 2019-09-16 10:08 -0400
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used GS <gs@v.invalid> - 2019-09-16 12:32 -0400
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used "Mayayana" <mayayana@invalid.nospam> - 2019-09-16 13:13 -0400
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used GS <gs@v.invalid> - 2019-09-16 20:26 -0400
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used "Mayayana" <mayayana@invalid.nospam> - 2019-09-16 22:08 -0400
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used GS <gs@v.invalid> - 2019-09-17 22:08 -0400
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used JJ <jj4public@vfemail.net> - 2019-09-16 18:27 +0700
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used "Mayayana" <mayayana@invalid.nospam> - 2019-09-16 09:55 -0400
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used "Mayayana" <mayayana@invalid.nospam> - 2019-09-16 10:32 -0400
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used JJ <jj4public@vfemail.net> - 2019-09-17 20:15 +0700
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used "Mayayana" <mayayana@invalid.nospam> - 2019-09-17 10:04 -0400
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used "Mayayana" <mayayana@invalid.nospam> - 2019-09-17 23:04 -0400
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used JJ <jj4public@vfemail.net> - 2019-09-18 16:17 +0700
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used "Mayayana" <mayayana@invalid.nospam> - 2019-09-18 10:12 -0400
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used JJ <jj4public@vfemail.net> - 2019-09-19 21:23 +0700
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used "Mayayana" <mayayana@invalid.nospam> - 2019-09-19 11:47 -0400
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used "R.Wieser" <address@not.available> - 2019-09-18 11:30 +0200
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used JJ <jj4public@vfemail.net> - 2019-09-18 17:43 +0700
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used "Mayayana" <mayayana@invalid.nospam> - 2019-09-18 10:16 -0400
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used "R.Wieser" <address@not.available> - 2019-09-18 16:49 +0200
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used "Mayayana" <mayayana@invalid.nospam> - 2019-09-19 09:29 -0400
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used "R.Wieser" <address@not.available> - 2019-09-19 20:10 +0200
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used "R.Wieser" <address@not.available> - 2019-09-20 08:04 +0200
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used JJ <jj4public@vfemail.net> - 2019-09-20 16:06 +0700
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used "R.Wieser" <address@not.available> - 2019-09-22 12:15 +0200
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used "Mayayana" <mayayana@invalid.nospam> - 2019-09-22 09:38 -0400
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used "R.Wieser" <address@not.available> - 2019-09-22 16:49 +0200
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used "Mayayana" <mayayana@invalid.nospam> - 2019-09-16 15:58 -0400
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used Schmidt <ng@vbRichClient.com> - 2019-09-20 21:44 +0200
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used "Mayayana" <mayayana@invalid.nospam> - 2019-09-20 17:11 -0400
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used Schmidt <ng@vbRichClient.com> - 2019-09-21 00:18 +0200
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used "Mayayana" <mayayana@invalid.nospam> - 2019-09-20 21:26 -0400
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used "Mayayana" <mayayana@invalid.nospam> - 2019-09-20 23:50 -0400
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used Schmidt <ng@vbRichClient.com> - 2019-09-22 16:32 +0200
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used "Mayayana" <mayayana@invalid.nospam> - 2019-09-22 12:45 -0400
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used Schmidt <ng@vbRichClient.com> - 2019-09-22 19:41 +0200
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used "Mayayana" <mayayana@invalid.nospam> - 2019-09-22 14:10 -0400
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used Schmidt <ng@vbRichClient.com> - 2019-09-22 20:46 +0200
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used "Mayayana" <mayayana@invalid.nospam> - 2019-09-22 15:09 -0400
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used Schmidt <ng@vbRichClient.com> - 2019-09-22 22:30 +0200
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used "Mayayana" <mayayana@invalid.nospam> - 2019-09-22 15:10 -0400
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used Schmidt <ng@vbRichClient.com> - 2019-09-22 22:32 +0200
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used "Mayayana" <mayayana@invalid.nospam> - 2019-09-22 13:45 -0400
Re: ADODB.Stream binary array to binary string failed unless x-user-defined is used JJ <jj4public@vfemail.net> - 2019-09-22 02:07 +0700
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