Squeak-dev July 2002

squeak-dev@lists.squeakfoundation.org

205 participants
393 discussions

[ENH] ID3Tags-jkd
by jase＠dufair.org 31 Jul '02

31 Jul '02

from preamble: "Change Set: ID3Tags-jkd Date: 30 July 2002 Author: Jason Dufair This allows MpegFile and, indirectly, StreamingMP3File to (polymorphically) access metadata about MP3 files via the ID3 tag (versions 1 and 2) mechanism. More ID3 info can be found at http://www.id3.org/"!

1 0

Submission help
by Jason Dufair 31 Jul '02

31 Jul '02

Weekend-hackeritis strikes! Looks like I must have done something wrong. The text I wrote did not appear in the ENH message I just sent. I also forgot to title it. Sorry all. I submitted an enhancement (based on 3.3a-4889) to allow MpegFile and, indirectly, StreamingMP3File to access metadata about MP3 files via the ID3 (versions 1 and 2 - via polymorphism) tag mechanism. More ID3 info can be found at http://www.id3.org/ Please let me know what else I might need to do for this submission. I'd love to see this incorporated into the image, giving Squeak even more multimedia capabilities. I intend my jukebox system to be a separate module, but it will depend on these lower-level methods on existing classes. Let me know if this cuts the mustard. Also - when I file out changes, where does the file go? I'm not prompted for a filename, but cannot find anything obvious in my Squeak dir nor my home dir (currently on Win2K). Thanks, all! -- Jason Dufair - jase(a)dufair.org http://www.dufair.org/ "Every word is like an unnecessary stain on silence and nothingness." -- Beckett

2 1

[ENH] NewChanges
by jase＠dufair.org 30 Jul '02

30 Jul '02

from preamble:

1 0

Dependencies Question
by Stephane Ducasse 30 Jul '02

30 Jul '02

Hi I'm building a breakOut for my book and I have the following problem. I have one object that contains the score of the game that get increased each time a brick is destroyed. Now I copied a bit the code of the SameGame to get a list of button around my game field and in particular I want to display the score. So here is my question. In VisualWorks I would changed the Field score instance variable into a value holder and I will initialize the BreakOut class to get notify whether the score variable changes. How can I do the same in Squeak? I started to Field>>score: aNumber score := aNumber. self changed BreakOut>>initializeToStandAlone ... self field addDependent: self BreakOut>>udpate Transcript show: 'Breakout update' ; cr But I got nothing. I checked a bit and I was surprised to see that dependents are still managed in Squeak via the DependentFields. I read in old VW tutorials and books that this way of doing things was bad because all the dependents were stored in the same dict. I checked and Model is there :) But Morph does not implement a different ways of storing dependents. Then I checked Morph>>changed "Report that the area occupied by this morph should be redrawn." ^fullBounds ifNil:[self invalidRect: self outerBounds] ifNotNil:[self invalidRect: fullBounds] And realized that Morph was simply breaking the dependency protocol.....(no comment) So here is my question: - how do we get notification and registration in Squeak for a morph? Stef PS: The dependencies mechanism start to be old and broadcasting too much. Is there somebody thinking about a new architecture? Events or DependencyTransformer like in VW .... Dr. Stéphane DUCASSE (ducasse(a)iam.unibe.ch) http://www.iam.unibe.ch/~ducasse/ "if you knew today was your last day on earth, what would you do different? ... especially if, by doing something different, today might not be your last day on earth" Calvin&Hobbes

6 8

Re: About snippet of code
by goran.hultgren＠bluefish.se 30 Jul '02

30 Jul '02

Stephane Ducasse <ducasse(a)iam.unibe.ch> wrote: > Hi goran and other > > I'm planning to write a Pot pourri of Squeak as article and I was thinking > to use the small > code snippets you were used to send around. I thought I was keeping them > but I could not > put my hands on them. Does anybody know where I could find the? Well, I used "<CSOTD>" around mine so I can always filter them out and send them to you. At least my own. I will do that first thing tomorrow. Have to go to the bus. regards, Göran

1 0

Re: miracle modules (was: Improving the aesthetics and usability of Squeak)
by goran.hultgren＠bluefish.se 30 Jul '02

30 Jul '02

"Lex Spoon" <lex(a)cc.gatech.edu> wrote: > Jecel Assumpcao Jr <jecel(a)merlintec.com> wrote: [SNIP] > > Well, this is the case for "top level" modules. The problem is when you > > are trying to load something that requires lots of other stuff to work. > > In that case we want something more like "apt-get" than "findRPM". Some > > module name to URL directory would be great. We don't care what all > > that stuff does, who wrote it and so on. Just a note. I am finishing SqueakMap as we speak. It is a kind of "apt-get" with a central master complemented with a web UI similar to Gnome's software map with categories. This thing will be ready this week as I am doing it full time currently. Here is the latest code dump I did on the modules-mailinglist a couple of weeks ago: http://anakin.bluefish.se:8000/gohu/11 ...if you are interested you could read the class comments. It is not in any easily runnable shape right now. I have done much more since then. The "apt-get" client part will have no other dependencies than a virgin Squeak (no Comanche etc). It uses a simple logfile chunk-format (same technique as the Modules use) and most importantly can update itself incrementally by fetching updates in a single gzip-compressed HTTP request. This will mean that you can do your "apt-get update" even if you are behind a modem - it will be fast. I am confident in that you are all going to like this stuff actually! :-) More coming later. regards, Göran

1 0

About snippet of code
by Stephane Ducasse 30 Jul '02

30 Jul '02

Hi goran and other I'm planning to write a Pot pourri of Squeak as article and I was thinking to use the small code snippets you were used to send around. I thought I was keeping them but I could not put my hands on them. Does anybody know where I could find the? Stef Dr. Stéphane DUCASSE (ducasse(a)iam.unibe.ch) http://www.iam.unibe.ch/~ducasse/ "if you knew today was your last day on earth, what would you do different? ... especially if, by doing something different, today might not be your last day on earth" Calvin&Hobbes

1 0

Exchanging Source Code between VW5i.4 and Squeak3; Best Practice?
by Sven C. Koehler 30 Jul '02

30 Jul '02

Hello all! What is the best practice when I want to write one source code for both Squeak3 and VW5i.4. By that I mean only the source code, ignoring differences in supplied classes by the system. I also want to keep source code in a CVS repository, for easy distribution (hence it suffices, if I can occasionally generate the source code that is to be checked in into the CVS repository). All I tried so far turned out not to work (using Pepe2, fileout .. filein). Thus, I believe that I need to maintain two different versions of the source code; one for Squeak, and one for VW... Any better ideas? Best regards, Sven C. Koehler

4 5

Cannot install Squeak v. 3.2-4
by Serban Udrea 30 Jul '02

30 Jul '02

Hello, I wanted to give Squeak a try but I cannot get it installed properly from sources on my Linux system. Please note that I have no experience with Smalltalk, just wanted to learn. I'll try to describe my problems: 1) "make install" seems to install just very little from what was build, i.e. just: a) the binary squeak in $PREFIX/lib/squeak/3.2-4/ and a link to it b) the plugins B3DAcceleratorPlugin and UnixOSProcessPlugin at the same location c) the squeak man page this seems to be related to the fact that the variable PLUGINS_LA in the Makefile has the value: B3DAcceleratorPlugin${la} UnixOSProcessPlugin${la} and the install-plugins rule depends on it 2) a squeak.image file is not created nor installed; inisqueak is not run, even if there is a install-image rule for this it is not called by make install 3) if choosing pthread support for the Mpeg3Plugin -lpthread is not added to the LIBS variable, thus the compile fails, adding it by hand in the Makefile solves the problem Help is greatly appreciated. Regards, Serban -- #<><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><># # "Human beings, like all other life forms, are parts of an inseparable # # organic whole. Their intelligence, therefore, implies that, the whole too # # is intelligent" # #<><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><># Serban Udrea S.Udrea(a)gsi.de GSI - Plasma Physics Department Darmstadt, Germany

4 7

Re: License Question
by goran.hultgren＠bluefish.se 30 Jul '02

30 Jul '02

Hi! marbusse(a)t-online.de (Markus Fritsche) wrote: > Hi! > > I'm trying to port the JdmMysqlDriver to GNU Smalltalk ( > http://swiki.squeakfoundation.org/gst/6 ). I got so far that I can > connect to the server and the server replies 'error'. This port relies > on squeak's SequenceableCollection>>#pairsDo and the methods from > "ByteArray-platform independent access". Am I right that I'll have to > code around this if I want to release my code (with or without all > dependencies)? If yes, do I'll have to start from scratch with these > methods? > Some license evangelist around? :-) Hmm, first of all, I am not a lawyer etc etc. :-) Others may have much better answers but here is my take on it, and I may be wrong: 1. The code you refer to (pairsDo:, ByteArray methods) was written by Dan Ingalls and Andreas Raab in 1998. This means the code is owned by Apple (or was it Disney at that time?) and is under SqueakL. 2. Since you probably intend to release your port under GPL the above code is off limits for you - it is under SqueakL and as such (quoting the license) "You may distribute and sublicense such Modified Software only under the terms of a valid, binding license that makes no representations or warranties on behalf of Apple, and is no less protective of Apple and Apple's rights than this License.". This means you can not sublicense it as GPL. And since Andreas and Dan do not own this code (they worked at Apple when writing it) they can not (even if they wanted to) dual license it to you under the GPL. 3. Obviously you are porting the Squeak port to GNU Smalltalk. Have you looked at the original for VW? At: http://www.jdmsoft.com/MysqlDriver.html It seems to be under the GPL, which on the other hand is quite up for discussion - GNU considers loading Smalltalk code into a Smalltalk image as linking which means that GPLed Smalltalk code "contaminates" the whole image. This is not a problem for you since you are using GNU Smalltalk (which already is all GPL) and you probably intend to use GNU Smalltalk to write GPL programs. In fact, if I have understood this correctly, GNU Smalltalk can only be used to write GPL programs due to this linking problem! Anyway - perhaps you could base your port from the original version instead? 4. If you do not intend to distribute your port - perhaps you just need it for a personal or inhouse project - then you don't need to worry. Just take the code. ;-) regards, Göran PS. Personally I prefer the MIT-license (a cleaned up BSD variant). It makes everything so much easier... DS

1 0

← Newer
1
2
3
4
5
6
7
8
...
40
Older →

Jump to page: