Squeak-dev May 2007

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233 discussions

News Team Monthly Report - April 2007
by Ron Teitelbaum 02 May '07

02 May '07

Hi All, News Team Report for April 2007. Our Highest read article for April: http://weeklysqueak.wordpress.com/2006/11/07/ah-ha/ had 1498 readers. This is an older article that found some new traction. Our second highest was http://weeklysqueak.wordpress.com/2007/04/16/google-summer-of-code-squeakn-s tyle/ which got 1463 readers. We are getting about 200-300 hits a day. Our best day in April was 1775 readers. We were listed in the top and growing blogs on wordpress a number of times. Our readership has dropped significantly mostly because of lack of time to publish articles. We really could use some new members. If you have an interest in writing articles for weeklysqueak please contact me. Thanks, Ron Teitelbaum Squeak News Team Leader

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Box-Admins Team Report for April, 2007
by Ken Causey 02 May '07

02 May '07

The box-admins team is reponsible for seeing that the community shared server is maintained and setting up any new features to be hosted on that server. For April 2007: A very quiet month, the only news is finally getting a site setup for http://www.squeakfoundation.org/ for the Squeak Foundation Board's use. Thanks to Brad Fuller for his persistence. I want to thank the community for the monetary support needed to fund the box and remind them that the bills continue to appear and that you can currently contribute to the hosting bills by going to http://discuss.squeakfoundation.org/ and clicking on the 'donate' button at the top right. Note that a donation here may be used for other Squeak Foundation services including but not limited to development, development infrastructure, and promotion of Squeak. The services being hosted have continued to grow and include (but are not limited to): http://www.squeak.org/ SqueakMap - http://map.squeak.org/ http://ftp.squeak.org/ http://lists.squeakfoundation.org/ http://discuss.squeakfoundation.org/ http://source.squeakfoundation.org/ http://map.squeak.org/ https://svn.squeak.org/ http://update.squeakfoundation.org/ http://wiki.squeak.org/ http://bugs.squeak.org/ http://www.squeakfoundation.org/ and DNS services for squeak.org and squeakfoundation.org domain names. Ken

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Harvesting Float Interval - questionable feature
by nicolas cellier 02 May '07

02 May '07

Playing with Interval, here is a report and some questions about a special feature INTRODUCTION: ------------ Interval on Float are messy. #do: loops are not consistent with #size nor #at: because of accumulated round off errors. This is because inside the do loop we write aValue := aValue + step And stop the loop when we reach stop Things are better if we make things compatible with #at: (index is 0-based) aValue := start + (index * step) And stop after self size iterations to be compatible with #size All this is at http://bugs.squeak.org/view.php?id=6456 It has the advantage of also solving #reverseDo: http://bugs.squeak.org/view.php?id=6438. Another related stuff is the way we test for inclusion. Current implementation try to test inclusion with a fuzzy tolerance. Unfortunately, it is completely broken and have incorrect patch at http://bugs.squeak.org/view.php?id=1602 for speeding up indexOf: as noted by german morales, and better patch by boris gartner at http://bugs.squeak.org/view.php?id=1603 for correcting both includes: and indexOf: The patch is however incomplete because it handles only approximate by excess, not by default as shown in http://bugs.squeak.org/view.php?id=6455. QUESTION: -------- But why do we test for Float inclusion with fuzzy tolerance in Interval and not in other collections? And why a fixed tolerance? (1.0e-10 relative to step in original, 1.0e-8 in some correction). I would tend to implement exactly same behaviour as super and eventually implement a includes:withTolerance: if needed, in all Collection (though this is as simple as #detect:, it might be accelerated in Interval if there is a dedicated selector). My feeling is that previous implementation of do: and unconsistency with at: might have motivated the fuzzy test. But is there another reason to make Interval behave differently from super? I tend to be cautious now, because when i tried to correct first and last that incorrectly handle empty Interval (http://bugs.squeak.org/view.php?id=6454), it did break the image. Text selection rely on this behaviour and that is more than 10 messages to patch. What is your opinion about the fuzzy inclusion?

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Re: [ANN] FreeType Plus release -- Can't get to work on Win2k
by David Mitchell 02 May '07

02 May '07

I'm on win2k pro and as soon as I install the DLLs from the Universe Browser, the Squeak screen goes black and the processor pegs 100%. If I press Ctrl+., the processor relents, but I don't get a refresh. Troubleshooting steps: Started with fresh Win32 download and Damien's squeak-web-118.image. Open Package Universe Browser. When the Preamble progress bar appears for Installing FreeType Plugins 0.13, Squeak stops responding. If I bring another window across it, it doesn't redraw the screen. At this point, I kill the Squeak process (after waiting several minutes). Looking in the Squeak directory, I see I have a package cache from the Universe Browser and these files copied in: BitBltPlugin.dll freetype6.dll ft2plugin.dll msvcr71.dll credits.txt Restarting any Squeak image at this point will show only a blank screen (tried several of mine and Squeak3.9-final-7067.image). So I think something isn't working at the VM level with the plugins. I also recreated by trying again and only installing the Plugins. Same result. I also tried clearing out my fonts (fell back to Arial, Times New Roman, Courier, Symbol, and Wingdings, a la Windows 3.1; albeit with OpenType). Also tried rebooting (I am on Windows). Any ideas? , starting any squeak image (even if I copy back an image without On 5/1/07, Chris Muller <asqueaker(a)gmail.com> wrote: > Sheesh.. Total, utter, maximum Gorgeousity. Thank you Andy, thank > you. This really lurches the look of my image forward a big step. > > I spent the whole day looking at my fonts. I never thought it would > happen, but I found something I like (a lot) better than Verdana for > the code font. It's called "Tw Cen MT (OpenType)" which I guess is > "Twentieth Century". > > The Century fonts for other stuff are really gorgeous too. > > I got a new computer a couple of months of go with a high-res screen, > so I'm enjoying "big" (>= 14-point) fonts with "no hinting". It's > high contrast and no jaggies at all. > > Thanks again! > Chris > > > On 4/28/07, Andrew Tween <amtween(a)hotmail.com> wrote: > > This is an official announcement that the FreeType Plus packages are now > > released. > > > > You can download from SqueakMap, or via the Package Universe within a developer > > Squeak (squeak-dev) image. > > > > I will be documenting various aspects of this on the wiki; at present you can > > view some screenshots, and read some preliminary descriptions, at > > http://wiki.squeak.org/squeak/5984 > > > > It will work, to varying degrees, on Windows (98, 2000, XP, & Vista); Linux > > (OpenSUSE, Fedora, Ubuntu, etc.); and Mac OS X. > > > > It requires an FT2Plugin, which is shipped with the Mac VM, and is available for > > Windows/Linux via the FreeType Plus (plugins installer) package. > > > > To enable sub-pixel anti-aliasing, the optional, and separate, FreeType Plus > > (sub-pixel anti-aliasing) package must be installed. > > This requires a modified BitBltPlugin. This is currently available for > > Windows/Linux only, and is installed via the FreeType Plus (plugins installer) > > package. If anybody wishes to attempt compile it for Macs, then please let me > > know. > > > > Rather than try to describe everything, and anticipate every question in > > advance, I would rather wait to see how people get on with installing/using it, > > and then update and improve the documentation accordingly. So, if you have > > problems, then please let me know; and if you have success then that would be > > nice to hear about too :) > > > > Cheers, > > Andy > > > > > > > > > > > >

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Acquiring installed version from Monticello
by Norbert Hartl 02 May '07

02 May '07

Hi, I'm trying to find out which version of a package is installed. If I open Monticello the installed version is underlined so I guess this information is stored somewhere :) thanks, Norbert

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[SqueakSource] Changing the Root URL
by David Tibbe 02 May '07

02 May '07

Hi, I've wanted to set up a SqueakSource, but that instance should not run at the root URL. Changing the Root URL in the Repository Settings just change it in some links. So I introduced SSRepository class>>defaultPath which returns '/squeaksource' for example. In that case, the whole repository would be accessible from http://www.example.org/squeaksource/. The change set containing my changes is attached to this mail. I've also modified SSRepository>>superUserEmail. It did not work if no superuser is in the repository and no superUserEmail is set in the properties. The changes were made to SqueakSource-lr.1016.mcz from http://www.squeaksource.com/ss.html Maybe it's helpful for some others or will be adapted in further versions. Regards, David 'From Squeak3.9 of 7 November 2006 [latest update: #7067] on 29 April 2007 at 9:36:09 pm'! SSModel subclass: #SSRepository instanceVariableNames: 'title members projects groups properties tags ' classVariableNames: 'Current Statistics StatisticsThread Storage RootUrl ' poolDictionaries: '' category: 'SqueakSource-Model'! !SSFrame methodsFor: 'accessing' stamp: 'dt 4/29/2007 21:14'! actions | controller path | controller _ self component activeController. path _ SSRepository defaultPath, '/feed.rss'. ^ Array streamContents: [ :stream | self isHome ifTrue: [ stream nextPutAll: (Array with: 'RSS feed' with: path); nextPutAll: #( 'Register Member' #registerMember 'Register Group' #registerGroup 'Register Project' #registerProject ). self session isSuperUser ifTrue: [ stream nextPutAll: #('Edit Settings' #editSettings)]]. (controller respondsTo: #actions) ifTrue: [ stream nextPutAll: controller actions ] ]! ! !SSKom class methodsFor: 'accessing' stamp: 'dt 4/29/2007 18:04'! default | application | application _ (WAApplication path: SSRepository defaultPath ) sessionClass: SSSession; preferenceAt: #entryPoint put: SSFrame; preferenceAt: #showToolbar put: false; preferenceAt: #errorPage put: WAEmailErrorPage; yourself. ^self handler: application! ! !SSRepository methodsFor: 'accessing-settings' stamp: 'dt 4/29/2007 19:47'! superUserEmail ^ self properties at: #superUserEmail ifAbsent: [String streamContents: [:strm | self members ifNotEmpty: [ self members do: [:ea | ea isSuperUser ifTrue: [ strm nextPutAll: ea email; nextPut: $,]]. strm skip: -1]]]. ! ! !SSRepository class methodsFor: 'private' stamp: 'dt 4/29/2007 21:32'! defaultPath ^'/squeaksource'! ! !SSRepository class methodsFor: 'private' stamp: 'dt 4/29/2007 19:16'! defaultRootUrl | hostName | hostName _ NetNameResolver nameForAddress: (NetNameResolver localHostAddress) timeout: 5. hostName ifNil: [hostName _ NetNameResolver localAddressString]. ^'http://', hostName, ':', self defaultPort asString, self defaultPath, '/'! ! !SSSession methodsFor: 'private' stamp: 'dt 4/29/2007 21:30'! getFile: aProject | fileName accessPath | accessPath _ self request accessPath. (SSRepository defaultPath count: [:each | each = $/]) timesRepeat: [ accessPath ifNotEmpty: [accessPath removeFirst]]. fileName _ accessPath second. "rss feed" fileName = 'feed.rss' ifTrue: [ ^self getRss: aProject ]. "robots.txt" fileName = 'robots.txt' ifTrue: [ ^self getRobotsTxt ]. aProject configs at: fileName ifPresent: [:aConfig | ^ self getConfig: aConfig]. fileName = 'blessed' ifTrue: [ accessPath size > 2 ifTrue: [fileName _ accessPath third] ifFalse: [^ self getBlessed: aProject]]. "mc diff" (fileName endsWith: MCMcdReader extension) ifTrue: [^self getDiff: fileName from: aProject]. "ancestory graph" SSGraphBuilder formats do: [ :each | (fileName endsWith: '.' , each) ifTrue: [ ^self getFile: fileName for: aProject ] ]. "mcz" self getVersion: fileName from: aProject! ! !SSSession methodsFor: 'actions' stamp: 'dt 4/29/2007 21:30'! getRequest: aProject | accessPath | self expire. accessPath _ self request accessPath. (SSRepository defaultPath count: [:each | each = $/]) timesRepeat: [ accessPath ifNotEmpty: [accessPath removeFirst]]. accessPath size > 1 ifTrue: [ self getFile: aProject ] ifFalse: [ self getListing: aProject ] ! ! !SSSession methodsFor: 'actions' stamp: 'dt 4/29/2007 21:30'! putRequest: aProject | author data version response blessed accessPath | self expire. accessPath _ self request accessPath. (SSRepository defaultPath count: [:each | each = $/]) timesRepeat: [ accessPath ifNotEmpty: [accessPath removeFirst]]. (self isAllowed: SSAccessPolicy write in: aProject) ifFalse: [ self authentificateProject: aProject ]. author _ self user ifNil: [ SSMember anonymousMember ]. self storage log: 'PUT ', self request url, ' (', author initials, ')'. data _ self request at: 'PUTData'. (self request url endsWith: '.mcm') ifTrue: [aProject addConfig: data author: author url: self request url] ifFalse: [version _ aProject addVersion: data author: author]. (version notNil and: [ accessPath second = 'blessed']) ifTrue: [blessed _ true. aProject blessVersion: version ifForbidden: [ blessed _ false] ]. self save. response _ SSCreatedResponse new. blessed ifNotNil: [ blessed ifTrue: [ response nextPutAll: 'Version blessed' ] ifFalse: [ response nextPutAll: 'Version NOT blessed' ] ]. self returnResponse: response! ! !SSSession methodsFor: 'request handling' stamp: 'dt 4/29/2007 21:30'! createRootFromRequest: aRequest "Make a project home page for projectname.html" | accessPath frame | frame _ super createRootFromRequest: aRequest. accessPath _ self request accessPath. (SSRepository defaultPath count: [:each | each = $/]) timesRepeat: [ accessPath ifNotEmpty: [accessPath removeFirst]]. accessPath isEmpty ifFalse: [ (self projectNamed: (accessPath first copyUpToLast: $.)) ifNotNilDo: [:project | frame setComponent: project view]]. ^ frame! ! !SSSession methodsFor: 'request handling' stamp: 'dt 4/29/2007 21:30'! handleProject: aSymbol " This method looks-up the project if outside a seaside-session and if successfull initializes a stateless environment with error-handler and escape continuation that can be used similarly while while inside a session. " | actionDictionary | ^self withErrorHandler: [ self withEscapeContinuation: [ | accessPath project | accessPath _ self request accessPath. (SSRepository defaultPath count: [:each | each = $/]) timesRepeat: [ accessPath ifNotEmpty: [accessPath removeFirst]]. project _ self projectNamed: accessPath first ifNotAllowed: [ :pjct | self authentificateProject: pjct ]. project isNil ifTrue: [ actionDictionary _ Dictionary new at: 'feed.rss' put: [ self getRss ]; at: 'sitemap.xml.gz' put: [ self getSitemapZipped ]; at: 'robots.txt' put: [ self getRobotsTxt ]; at: self repository faviconFilename put: [ self getFavicon ]; yourself. (actionDictionary at: accessPath first ifAbsent: [ self errorNotFound: accessPath first ]) value ] ifFalse: [ self perform: aSymbol with: project ] ] ]! ! !SSSession methodsFor: 'request handling' stamp: 'dt 4/29/2007 21:30'! wantsSessionForRequest: aRequest "We want to start a regular session if the path is empty or a project home page (projectname.html)" | accessPath fileName baseName | accessPath _ self request accessPath. (SSRepository defaultPath count: [:each | each = $/]) timesRepeat: [ accessPath ifNotEmpty: [accessPath removeFirst]]. "first visit, a url without a path" accessPath isEmpty ifTrue: [^true]. "project listing" accessPath size > 1 ifTrue: [^false]. fileName _ accessPath first. (fileName endsWith: '.html') ifFalse: [^false]. baseName _ fileName copyUpToLast: $. . ^ (self projectNamed: baseName) notNil! ! SSModel subclass: #SSRepository instanceVariableNames: 'title members projects groups properties tags' classVariableNames: 'Current RootUrl Statistics StatisticsThread Storage' poolDictionaries: '' category: 'SqueakSource-Model'!

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[ANN] Kernel Image - independent MinimalMorphic and better granularity
by Pavel Krivanek 02 May '07

02 May '07

Hi all, I have prepared the new version of the KernelImage. The most important new is the independence of the MinimalMorphic package. That means that MinimalMorphic package has no overrides now and we are be able to modify and publish Kernel and basic primitive packages directly from the MinimalMorphic image! I have to say that some of the secessary refactorings are very ugly now but the main goal was to make the MinimalMorphic independent soon and enable to develop the kernel refactorings in more comfortable way. The test and some other small packages were removed from the EToys package. The next step should be improvement and splitting of tests. The complete image has 20 failures and 3 errors now. The EToys package has still many overrides. All packages should include 3.10 patches up to 7091. ImagePack 20070428 - download: http://comtalk.net/public/pub/KernelImage/ImagePack20070428.zip Includes: - KernelImage (basic kernel without network and the other primitive packages) - KernelImageMC (basic kernel with network and Monticello) - MinimalMorphic image - EToys image Cheers, -- Pavel

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Developing with traits
by Damien Cassou 02 May '07

02 May '07

To develop with traits, everyone needs good tools. Here is what I use and miss. I develop with: - last omnibrowser version. - omnibrowser commands to create new traits based on template. - omnibrowser fixes to help browsing traits (ctrl+b on a trait name, ctrl+f to find traits). - dynamic protocols to know what is required, what is local... All of those above points are covered in squeak-dev images. What I miss: - new refactorings for trait. - current refactorings corrected. - global view of classes/traits as in an UML diagram. - a way to view from where this method comes from if I select it in a class. -- Damien Cassou

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[ANN][Squeak-dev Image] Version 118
by Damien Cassou 02 May '07

02 May '07

Squeak-dev image is an image made for squeak developers. *Important notice:* This version is based on Squeak 3.9 7067. You can download it here: http://damien.cassou.free.fr/squeak-dev/ Changes in this version: ------------------------------ - Based on Squeak 3.9 7067. - The documentation now contains all installed packages. - The new Universe Browser based on OmniBrowser replaces the previous one. - Lot's of other packages have been updated too. Updating the image: ------------------------- You are not obliged to download a new image if you don't want. You can always update your image. To upgrade your already existing squeak-dev image: 1) World menu->open...->Package Universe Browser 2) Update list from network 3) Select all upgrades 4) Install selection 5) Execute: 'DEVImageCreator default install' (all windows will be closed) Prepared packages: -------------------------- There are a lot of packages prepared for you in this image. They are not loaded in the image, but they can be easily. - Open Package Universe Browser (world->open...->Package Universe Browser). - Click on "Update list from network" - Wait a few seconds - Select your packages - Install them Future work: ---------------- - Wait for feedback. - Follow Squeak 3.10 beta releases. - Think about a new way of naming the image version. This is because currently, the version is based on the Monticello repository version. However, the big updates/changes now happen in the universe directly and I don't have to touch the source code anymore. Please tell me what is your experience with this version. Please tell me what you want for this image, this is for you. -- Damien Cassou

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Date classes
by J J 02 May '07

02 May '07

Hi all, I am doing some stuff with dates and I noticed the date classes that come with the default Squeak image are very nice and very close to having everything I would want. But there are a few inconsistencies here and there, and things missing that would make things easier. So what is the procedure to updating this? I think it's part of the core system so I probably can't just do a monicello package update somewhere? Do I have to do it through mantis? Thanks, Jason _________________________________________________________________ Download Messenger. Join the im Initiative. Help make a difference today. http://im.live.com/messenger/im/home/?source=TAGHM_APR07

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