Squeak-dev April 1999

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Re: Squeak -> Objective-C translation
by Les Tyrrell 07 Apr '99

07 Apr '99

Found it! ftp://st.cs.uiuc.edu/pub/Smalltalk/misc/producer/ les ( it was in the last place I looked.... )

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Re: Squeak -> Objective-C translation
by Les Tyrrell 07 Apr '99

07 Apr '99

You may want to look at Producer, which I believe was a Smalltalk to Objective-C translator done way back when, probably for ObjectWorks. It used to be available on the UIUC archive, although I am having trouble finding it now. les

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Weak support for directory manipulation in Squeak (?)
by Stephen Pope 07 Apr '99

07 Apr '99

Hi All, In porting the Minnestore OODB to Squeak, I'm running into problems with directory manipulation. There are methods in class FileDirectory for creating directories, but not for deleting them (FileDirectory deleteFileNamed: won't work) or asking whether a directory exists (FileDirectory fileExists: answers false), and there's also no method for asking whether a given name is a directory or a normal file (though this can be written using existing methods). Am I missing something? Has anyone else noticed this and added it in some package? Should we use a couple of the empty primitives in the range 163-168 for new directory primitives? -- stp Stephen Travis Pope stp(a)create.ucsb.edu http://www.create.ucsb.edu/~stp/

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FW: Squeak and MySql
by Peter Crowther 07 Apr '99

07 Apr '99

>From my inbox a month ago... -----Original Message----- From: Joerg Brunsmann [mailto:Joerg.Brunsmann@FernUni-Hagen.de] Sent: 05 March 1999 12:50 To: squeak(a)cs.uiuc.edu Subject: Squeak and MySql Hi all, MySql (http://www.mysql.org) is an open source SQL database server which runs on all possible platforms. Fortunately - MySql has a socket access interface for client connections - a VisualWorks package exist which uses this interface Although I don't like relational databases I ported this library to Squeak 2.3 (why aren't Squeak sockets streamable ;-) in order to make Squeak even more attractive. Perhaps Swiki providers may want to use it, too. Download the Squeak filein and see some screenshots here: http://www.informatik.fernuni-hagen.de/import/pi3/joerg/squeak/mysql/ Use the Smalltalk front end like this: connSpec := (JdmConnectionSpec new initialize user: 'doe'; password: 'mypass'). connection := JdmConnection on: connSpec. resultSet := statement executeQuery: 'insert into aTable (aField) values (aValue)'. [resultSet next] whileTrue: [value := resultSet valueNamed: 'columnName']. Have fun, Joerg

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Re: MySQL interface...
by Stephen Pope 07 Apr '99

07 Apr '99

Dino wrote: > > Anyone know if there is a smalltalk interface for the MySQL database? > > I wonder what it would take to make one... I looked into this, and it wouldn't be all that difficult. The MySQL C-language API is pretty simple, and we could make a native-call- or socket-based interface. I recently wrote a transparent object-relational mapping framework in Java using JDBC, and have some ideas about how to do this well in Squeak, but all my Squeak cycles at present are going into getting the MinneStore OODB ported (see my next letter). For a Squeak/MySQL interface, I'd adopt a somewhat JDBC-like approach that exposes tables and SQL to Squeak (for optional use), and add a layer of transparent object adaptors and field accessors for simpler access. -- stp Stephen Travis Pope stp(a)create.ucsb.edu http://www.create.ucsb.edu/~stp/

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Re: ESUG Advanced Seminar is looking for Squeakers
by Peter William Lount 07 Apr '99

07 Apr '99

Hi Stephane, Is there a specific web page for this event? If so please email it to me so that I can post it on http://www.smalltalk.org/events.html. If not please create a specific web page. Currently I am linking to your generic home page, but there is no place to find out the info on the conference there!!!! (Or at least I can't find it ;--(. All the best, Peter W. Lount peter(a)smalltalk.org http://www.smalltalk.org p.s. Please link to our home page. ---------- From: Stephane Ducasse <ducasse(a)iam.unibe.ch> To: squeak(a)cs.uiuc.edu Cc: Annick_Fron_AFC(a)compuserve.com Subject: ESUG Advanced Seminar is looking for Squeakers Date: April 7, 1999 1:34 AM Hi Squeakers ESUG (European Smalltalk Users Group) is organizing for the 7th time a advanced users conference covering the hottest topics of the technology, as well as advanced software and design practice. The conference is held in University of Gent, Belgium, from August 30st to september 3rd. Speakers may submit topics to info(a)esug.org in the following format : - half day tutorial, - 1 hour tutorial - experience report - design issues for the design fest - commercial demos All innovative suggestions are welcome. Please visit : http://www.esug.org Last year Ian made a really good presentation of Squeak (half non-technical half really technical about the implementation of the Jitter). Squeak is the vector of new ideas in Smalltalk like the pluggable primitives. It could be very interesting for the european Squeak people to use ESUG Advanced Seminar to promote Squeak and Smalltalk in Europe. I sincerly hope to see some Squek tutorial or demoes at Gent. Stef

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Re: Running Squeak on Linux
by Ian Piumarta 07 Apr '99

07 Apr '99

Gran, > It does not check for 24 bits so the problem is not on the X side. > The second question is why the VM is built like that, but that is Ians > thing to answer - there is probably some logical explanation! It just congealed that way. I started with 8bpp PseudoColor only (my machine at home was a Sun IPX at the time) and gradually integrated support for higher bpps as and when they were sent to me (by people with more expensive graphics cards ;). Ian

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Re: Running Squeak on Linux
by "Gran" Hultgren 07 Apr '99

07 Apr '99

Hi! ---Ivan Brusic <ivan(a)cc.gatech.edu> wrote: > Actually, I can get Squeak to run at 16 or 32 bpp, but not 24. I > definetly need to recheck all my X settings, something is not right on my > system. Thanks for all the help. Let me just repeat my earlier posting: ------- switch (stVisual->class) { case PseudoColor: if (stBitsPerPixel == 8) break; else { fprintf(stderr, "This visual class is not supported\n"); exit(1); return; } case TrueColor: case DirectColor: getMaskbit(stVisual->red_mask, &stRNMask, &stRShift); getMaskbit(stVisual->green_mask, &stGNMask, &stGShift); getMaskbit(stVisual->blue_mask, &stBNMask, &stBShift); if (stBitsPerPixel == 16) { stHasSameRGBMask16= (stVisual->red_mask == (0x1f << 10) && stVisual->green_mask == (0x1f << 5) && stVisual->blue_mask == (0x1f)); break; } else if (stBitsPerPixel == 32) { stHasSameRGBMask32= (stVisual->red_mask == (0xff << 16) && stVisual->green_mask == (0xff << 8) && stVisual->blue_mask == (0xff)); break; } else { fprintf(stderr, "This visual class is not supported\n"); exit(1); return; } case GrayScale: case StaticColor: case StaticGray: default: fprintf(stderr, "This visual class is not supported\n"); exit(1); return; } ----- So reading this correct 256 colors is OK in PseudoColor but when using TrueColor or DirectColor you need 65536 or ~2 million colors (16 or 32 bits). It does not check for 24 bits so the problem is not on the X side. The second question is why the VM is built like that, but that is Ians thing to answer - there is probably some logical explanation! regards, Gran === Gran Hultgren, gohu(a)rocketmail.com, icq#:6136722 GSM: +46 709 472152, http://195.22.65.4 "First they ignore you. Then they laugh at you. Than they fight you. Then you win." -- Gandhi _________________________________________________________ DO YOU YAHOO!? Get your free @yahoo.com address at http://mail.yahoo.com

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ESUG Advanced Seminar is looking for Squeakers
by ducasse＠iam.unibe.ch 07 Apr '99

07 Apr '99

Hi Squeakers ESUG (European Smalltalk Users Group) is organizing for the 7th time a advanced users conference covering the hottest topics of the technology, as well as advanced software and design practice. The conference is held in University of Gent, Belgium, from August 30st to september 3rd. Speakers may submit topics to info(a)esug.org in the following format : - half day tutorial, - 1 hour tutorial - experience report - design issues for the design fest - commercial demos All innovative suggestions are welcome. Please visit : http://www.esug.org Last year Ian made a really good presentation of Squeak (half non-technical half really technical about the implementation of the Jitter). Squeak is the vector of new ideas in Smalltalk like the pluggable primitives. It could be very interesting for the european Squeak people to use ESUG Advanced Seminar to promote Squeak and Smalltalk in Europe. I sincerly hope to see some Squek tutorial or demoes at Gent. Stef

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Re: Running Squeak on Linux
by Lex Spoon 07 Apr '99

07 Apr '99

Glad to hear you got it working! How far down did you have to decrease the depth? Lex Ivan Brusic <ivan(a)cc.gatech.edu> wrote: > OK! Squeak is finally up and running. Changing my display depth *down* > made it work. Ack, but I like TrueColor. > > Ivan > > On Tue, 6 Apr 1999, Ivan Brusic wrote: > > > > > None of these solutions work. I am using 32bpp depth, and Squeak still > > refuses to run. This is getting fustrating. > > > > Ivan > > > > On Tue, 6 Apr 1999, Dino wrote: > > > > > Hi Hi! > > > > > > If you use vnc to access your X desktop, you can run the vncviewer with the -cc > > > 3 option and a depth of 16. It seems to have fixed my vnc problem. > > > > > > Although, I don't see this being a problem if you run squeak in X11. I run it > > > fine on my machine. I'm also running 2.2.4 and libc6. You probably have seen > > > me in the CoC using squeak on my seemingly exported display... > > > > > > -- Dino > > > > > > Gran Hultgren wrote: > > > > > > > > Hi! > > > > > > > > ---Ivan Brusic <ivan(a)cc.gatech.edu> wrote: > > > > > Hello fellow squeakers, > > > > > > > > > > I am unable to run Squeak on Linux. There are two different errors > > > > which > > > > > I get when trying to run Squeak: > > > > > > > > > > 1) When using Ian's precompiled VM (SqueakVM-2.3-i386-linux-2.0.36) or > > > > > using my own compiled VM (with the lastest sources) I get the > > > > following > > > > > error: > > > > > This visual class is not supported > > > > > > > > This has to do with X Windows. I got the same problem when trying to > > > > get Squeak to work with VNC. After looking in the VM code (sqXwindos.c > > > > - see below) it showed that Squeak does not support every possible X > > > > configuration when it comes to colors. > > > > > > > > I changed VNC to use PsuedoColors with 256 colors and everything works > > > > great. So I suggest that you check your colordepth that X uses, if its > > > > 256 you have to raise it to 65536 or change your color support from > > > > TrueColor/DirectColor to PseudoColor. > > > > > > > > Exerpt from: ftp://alix.inria.fr/pub/squeak/unix/Squeak/src/sqXWindow.c > > > > ---- > > > > switch (stVisual->class) > > > > { > > > > case PseudoColor: > > > > if (stBitsPerPixel == 8) > > > > break; > > > > else > > > > { > > > > fprintf(stderr, "This visual class is not supported\n"); > > > > exit(1); > > > > return; > > > > } > > > > case TrueColor: > > > > case DirectColor: > > > > getMaskbit(stVisual->red_mask, &stRNMask, &stRShift); > > > > getMaskbit(stVisual->green_mask, &stGNMask, &stGShift); > > > > getMaskbit(stVisual->blue_mask, &stBNMask, &stBShift); > > > > if (stBitsPerPixel == 16) > > > > { > > > > stHasSameRGBMask16= (stVisual->red_mask == (0x1f << 10) && > > > > stVisual->green_mask == (0x1f << 5) && > > > > stVisual->blue_mask == (0x1f)); > > > > break; > > > > } > > > > else if (stBitsPerPixel == 32) > > > > { > > > > stHasSameRGBMask32= (stVisual->red_mask == (0xff << 16) && > > > > stVisual->green_mask == (0xff << 8) && > > > > stVisual->blue_mask == (0xff)); > > > > break; > > > > } > > > > else > > > > { > > > > fprintf(stderr, "This visual class is not supported\n"); > > > > exit(1); > > > > return; > > > > } > > > > case GrayScale: > > > > case StaticColor: > > > > case StaticGray: > > > > default: > > > > fprintf(stderr, "This visual class is not supported\n"); > > > > exit(1); > > > > return; > > > > } > > > > > > > > ----- > > > > > > > > So reading this correct I assume that 256 colors is OK in PseudoColor > > > > but when using TrueColor or DirectColor you need 65536 or ~2 million > > > > colors (16 or 32 bits). > > > > > > > > Wll, that's my two cents. > > > > > > > > regards, Gran > > > > > > > > === > > > > Gran Hultgren, gohu(a)rocketmail.com, icq#:6136722 > > > > GSM: +46 709 472152, http://195.22.65.4 > > > > "First they ignore you. Then they laugh at you. > > > > Than they fight you. Then you win." -- Gandhi > > > > _________________________________________________________ > > > > DO YOU YAHOO!? > > > > Get your free @yahoo.com address at http://mail.yahoo.com > > > > > > > > > > -- > > > > Ivan Brusic | "Computers are nothing but a perfect > > Graduate Student | illusion of order" - Iggy Pop > > College of Computing & GVU Center | > > Georgia Institute of Technology | E-mail: ivan [at] cc.gatech.edu > > > > > > -- > > Ivan Brusic | "Computers are nothing but a perfect > Graduate Student | illusion of order" - Iggy Pop > College of Computing & GVU Center | > Georgia Institute of Technology | E-mail: ivan [at] cc.gatech.edu

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