Squeak-dev August 2001

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187 participants
488 discussions

[cross posting Brian's brain]From comp.ai FWD:>>comp.ai.alie <<END>>
by Sven Delaney 08 Aug '01

08 Aug '01

Explain speed in term of distance And draw a very good map. Name YOUR personal favourite fjiod? Homework. Sink four battle ship using spectrocophy! Diary: SqueakMorph.end! _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp

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Re: Datasores
by Leandro Caniglia 08 Aug '01

08 Aug '01

Diego Gomez Deck <DiegoGomezDeck(a)ConsultAr.com> wrote: > Great! > > A good persistence solution is needed in Squeak... > > Is there available a preliminary version? The current version works, but changes all the time because is still under development. If you insist ;-) I can send you something to play with. Please, send me a private email. /Leandro

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Re: Datasores
by Leandro Caniglia 08 Aug '01

08 Aug '01

Timothy Reaves <treaves(a)silverfields.com> wrote: > Other than Gemstone, what options are available for datastores? I'm considering writing an interface to GOODS, but as I'm not a databse writer, this would probably take a long time. > > Obviously, I'd prefer an OO database. There is a version of MinieStore for Squeak in the archives. Moreover, Valeria Murgia and me are actively working right now on SqueakAttic, a new object data base for Squeak. SqueakAttic is an extension of Squeak providing passive object database services with transparency. We will release the first version of SqueakAttic soon (2 or 3 weeks) and it will be freely available. /Leandro

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Re: Help with changesets
by Bob Arning 08 Aug '01

08 Aug '01

Ross, Actually, I suspect the problem might lie elsewhere. Is the file that you had been editing by hand? If so, could you have made this alteration yourself? I can't right away see how the questionable stuff could have come straight from Squeak. Cheers, Bob On Tue, 7 Aug 2001 15:25:36 -0700 Ross Boylan <RossBoylan(a)stanfordalumni.org> wrote: >On Tue, Aug 07, 2001 at 02:05:03PM -0400, Bob Arning wrote: >> Ross, >> >> The problem actually starts one line earlier than the excerpt you give here >> >> On Mon, 06 Aug 2001 18:25:36 -0700 Ross Boylan <RossBoylan(a)stanfordalumni.org> wrote: >> >I constructed a file in (details below) which mostly files in. But at the >> >end there is a reorganize, and I get a syntax error when it starts parsing >> >the second line of the reorganize: >> > ('debugging' halt initialize reset) >> > Nothing more expected ->('event handling' wantsKeyboardFocusFor:) >> > >> >Here's the relevant excerpt >> >!ActivityCellMorph reorganize! >> >('debugging' halt initialize reset) >> >('event handling' wantsKeyboardFocusFor:) >> >> It seems to the the reorganize with nothing following that gets things out of sync. >> >> !ActivityLogEntry reorganize! <===== this is the problem >> !ActivityCellMorph reorganize! >> ('debugging' halt initialize reset) >> ('event handling' wantsKeyboardFocusFor:) >> ! >So is there a bug in the code that does the fileout?

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Re: Help with changesets
by Bob Arning 08 Aug '01

08 Aug '01

Ross, The problem actually starts one line earlier than the excerpt you give here On Mon, 06 Aug 2001 18:25:36 -0700 Ross Boylan <RossBoylan(a)stanfordalumni.org> wrote: >I constructed a file in (details below) which mostly files in. But at the >end there is a reorganize, and I get a syntax error when it starts parsing >the second line of the reorganize: > ('debugging' halt initialize reset) > Nothing more expected ->('event handling' wantsKeyboardFocusFor:) > >Here's the relevant excerpt >!ActivityCellMorph reorganize! >('debugging' halt initialize reset) >('event handling' wantsKeyboardFocusFor:) It seems to the the reorganize with nothing following that gets things out of sync. !ActivityLogEntry reorganize! <===== this is the problem !ActivityCellMorph reorganize! ('debugging' halt initialize reset) ('event handling' wantsKeyboardFocusFor:) ! Cheers, Bob

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[ENH] TIFFReader 1.0 reads some, not all, TIFF files
by Martin McClure 07 Aug '01

07 Aug '01

I wanted a way to import images with alpha channels from Strata 3d into Squeak, but the only file formats they had in common did not support alpha channels. I saw that John McIntosh made a TIFF plugin last fall, but I decided to code up a simple TIFF reader in Squeak rather than port the plugin to the VMs I was interested in. So here's the first version. It doesn't write TIFFS, only read, and right now it only reads 32-bit uncompressed TIFFs with one alpha channel. It will read either big-endian or little-endian TIFFs. It's integrated with FileList and ImageReadWriter, so after filing in the change set you can read TIFFs just like you'd read in BMPs or JPEGs or GIFs. I've tested it with TIFFs produced by Strata3D and by PhotoShop 6. If it fails to read a 32-bit uncompressed TIFF with one alpha channel produced by some other package, please send me a sample TIFF so I can fix it. Also, if anyone urgently wants to be able to read TIFFs without alpha channels or 8-bit TIFFs or gray-scale TIFFs or something, let me know and I'll increase the priority of putting in the improvements (or, of course, you're welcome to enhance it yourself.) -Martin

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Re: Help with changesets
by Giovanni Giorgi 07 Aug '01

07 Aug '01

emacs can understand MAC/DOS format in automatic, as far as I know. If the file is in TRUE MAC format, a small string "(Mac)" will appear in the status bar. But if the file has unix or DOS line, emacs can be conused! Check your .emacs, for seeing if you set some wrong defaults. ciao ciao ----- Original Message ----- From: John Hinsley <jhinsley(a)telinco.co.uk> Date: Tuesday, August 7, 2001 11:54 am Subject: Re: Help with changesets > Ross Boylan wrote: > //snipped// > > I can only offer a comment on this bit! > > > > > Emacs tells me the original and output change set are both in > Unix format, > > and I see lots of ^M. All these activities were one under MS > Windows. > Now, I'm of the vim/gvim school, but I'm pretty sure that emacs isn't > telling you that the input and output changeset are in Unix > format, but > that it is working in Unix format: no *nix uses the ^M natively, so > seeing it is a sure sign that the file isn't completely in Unix format > (if it's from a conventional -- that is, unaltered, Squeak, it'll be > spitting out code in Mac format). Indeed, it may be spitting out your > new changeset if you've edited it. > > In gvim, at least, it's possible to alter the rc file so that it'll > accept DOS, unix and Mac filetypes. I'd be pretty stunned if there was > not a similar mechanism in emacs. > > HTH a little ;-) > > Cheers > > John > > -- > ************************************************************************ ****** > Marx: "Why do Anarchists only drink herbal tea?" > Proudhon: "Because all proper tea is theft." > ************************************************************************ ****** > > >

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Datasores
by Timothy Reaves 07 Aug '01

07 Aug '01

Other than Gemstone, what options are available for datastores? I'm considering writing an interface to GOODS, but as I'm not a databse writer, this would probably take a long time. Obviously, I'd prefer an OO database.

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Help with changesets
by Ross Boylan 07 Aug '01

07 Aug '01

I constructed a file in (details below) which mostly files in. But at the end there is a reorganize, and I get a syntax error when it starts parsing the second line of the reorganize: ('debugging' halt initialize reset) Nothing more expected ->('event handling' wantsKeyboardFocusFor:) Here's the relevant excerpt !ActivityCellMorph reorganize! ('debugging' halt initialize reset) ('event handling' wantsKeyboardFocusFor:) I suspect the problem is that I've switched formats somewhere, but I'm not quite sure how to fix it up. Or it might be just a sequencing issue, since neither the protocols nor some of the named methods are present in the class. Here's the history: I start with a changeset created by fileout. In a file list, I open the file using browse code. In the code browser, I removed some classes and selected fileout on the top. It asked if I wanted to move doits to the start or end--which didn't seem quite right (I said use the end). It also asked for the file name; I said Activity.cs. Then I tried filing it in and got the error. I also tried renaming to Activity.st, but same result. Emacs tells me the original and output change set are both in Unix format, and I see lots of ^M. All these activities were one under MS Windows. Is the browse code/fileout sequence legit? Are there other easy ways to purge some classes from a change set? Thanks.

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[BUG]SystemDictionary>>discardMVC breaks editing
by Editor - Squeak News 07 Aug '01

07 Aug '01

In 3.0 and 3.1alpha if one discards MVC and then touches the TextMorphEditor code then strange things start to happen. For instance: Take a virgin 3.x image discard MVC then edit the mouseDown: method of TextMorphEditor, just add a line or a character, then accept it. Every mouseDown to a text window after accept causes a walkback. There are variations of this bug that can be created by various means this is only one way of creating it. As of now I don't have a solution to it. Cheers Tansel

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