April 2010 - Pharo-dev - lists.pharo.org

[Pharo-project] [ANN] Pharocasts: SandstoneDb (with subtitles !)
by laurent laffont April 26, 2010

April 26, 2010

Hi, I've just uploaded a new screencast which introduces SandstoneDb (and also HelpSystem). http://pharocasts.blogspot.com/2010/04/sandstonedb-simple-activerecord-styl… Note this is my first one with subtitles. There's a link so you can download it and translate it (some people have asked for that). I've used SubtitleEditor (http://home.gna.org/subtitleeditor/) but I don't really like it. Do you know a better software on Linux ? The video is accelerated, it's more dynamic IMHO ( to do this in avidemux, just go in video menu, framerate, and put a higher framerate). <http://pharocasts.blogspot.com/2010/04/sandstonedb-simple-activerecord-styl…> Cheers, Laurent Laffont

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[Pharo-project] Need your help filling a FAQ
by Igor Stasenko April 26, 2010

April 26, 2010

Hello guys, i'm currently writing a documentation for my project - NativeBoost. The work is based on a simple plugin which i wrote, which allows to run a native code from Squeak. The native code is attached to a compiled method itself (into its trailer), and so lives within an image. The plugin can run this code through a single primitive, which knows how to do it right. Actually VM requires very small changes to support that. The bulk of the work lies at the language side. I'm currently working on making FFI callout support interface which will support many cool things, comparing to usual FFIPlugin. :) I'd like to know, what details you want to know about it (tautology ;) , so i will compose the FAQ along with other details about project. P.S. Google became too smart :) Once i clicked 'send' button, its shows a message box: Did you mean to attach files? You wrote "is attached" in your message, but there are no files attached. Send anyway? -- Best regards, Igor Stasenko AKA sig.

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[Pharo-project] is MC and MCBrowser sending event when a package is created?
by StÃ©phane Ducasse April 25, 2010

April 25, 2010

Hi is MC and MCBrowser sending event when a package is created? is it using/extending SystemChangeNotifier? Stef

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[Pharo-project] Fwd: [Vm-dev] Running Alien on Windows
by StÃ©phane Ducasse April 25, 2010

April 25, 2010

On Tue, Apr 20, 2010 at 09:23:36PM -0700, Andreas Raab wrote: > > That leaves the question of how to deal with the patches to the VMMaker > code base. As you know, my "official" VMs are always built from the > "official" sources (i.e., the latest VMMaker package on > http://www.squeaksource.com/VMMaker.html) and if you'd like to help > getting Alien support into the standard builds we should figure out how > to integrate these patches. > > Perhaps David and/or Eliot can help? From my perspective this issue > doesn't really belong with the Windows VM but rather with the VMMaker > package. I just build whatever is in there, so if Alien support is in, > then I'll build it together with everything else. I added Alien functions to VMMaker on SqueakSource: Name: VMMaker-dtl.170 Author: dtl Time: 25 April 2010, 3:21:08.401 pm Ancestors: VMMaker-dtl.169 VMMaker 4.1.0 Include support for Alien FFI in the interpreter. This adds the contents of package Alien-VMMaker-Support from the Alien project on SqueakSource. The Alien plugin has not been included, and continues to be maintained in package Alien-VMMaker-Plugins on SqS/Alien. These additions are copyright and licensed as follows (reference SqS/Alien): Copyright 2008 Cadence Design Systems, Inc. Licensed under the Apache License, Version 2.0 (the ''License''); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Aug 27th, 2009 I also updated platforms/Cross/vm/sqVirtualMachine.[ch] with the Alien functions. This bumps the VM_PROXY_MINOR version to 8, and requires that VMs be generated with VMMaker-dtl.170 (or that you load the equivalent from the the Alien project on SqueakSource). I updated the configuration map so that "VMMaker updateFromServer" will now pull in the Alien plugin. A similar update will be needed for ConfigurationOfVMMaker for Pharo. Note that this adds Apache licensed code to VMMaker. If there are any concerns about this, please speak up. Dave

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[Pharo-project] Serialization of font object
by nullPointer April 25, 2010

April 25, 2010

Regards I see in Pharo a few ways for create a font, StrikeFont, LogicalFont... I need generate dinamically code in Smalltalk for build UIs, and my problem now is when I have serialize the font of a widget. Which could be the best way for do that? In other objects like arrays, points, associations is possible get that calling #printString method. Exists some equivalence for that in fonts, or is needed implement that mechanism of zero? Thanks for answers -- View this message in context: http://forum.world.st/Serialization-of-font-object-tp2062241p2062241.html Sent from the Pharo Smalltalk mailing list archive at Nabble.com.

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[Pharo-project] Fwd: Easy SqueakVM build
by laurent laffont April 25, 2010

April 25, 2010

If some people are interested ... Cheers, Laurent Laffont ---------- Forwarded message ---------- From: laurent laffont <laurent.laffont(a)gmail.com> Date: Tue, Apr 20, 2010 at 10:16 PM Subject: Easy SqueakVM build To: Squeak Virtual Machine Development Discussion < vm-dev(a)lists.squeakfoundation.org> Hi, I've written a script to build the squeak vm from scratch on Linux in one command. It's here http://github.com/lolgzs/easy_squeakvm To build the VM, just get the the script and ./easy_squeakvm.sh This will - checkout squeakvm sources from svn repository - download PharoCore image - load VMMaker into PharoCore - generate the interpreter - build the VM - put binaries in out/squeakvm, ready to use I was tired of typing the same commands over and over :) Cheers, Laurent Laffont

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[Pharo-project] #findString:startingAt:caseSensitive: broken
by Lukas Renggli April 25, 2010

April 25, 2010

The method #findString:startingAt:caseSensitive: seems to be quite broken. This is sort of a critical bug, because the widely used #includesSubstring:caseSensitive: (in Pier and Seaside) depends on it. http://code.google.com/p/pharo/issues/detail?id=2353 First, the method #findString:startingAt:caseSensitive: has all kinds of strange comments and warning from a unfinished implementation. Furthermore -- and this is the bug I am encountering -- it replaces the string to be searched with an empty WideString if either the search or the searched string are WideString instances. Thus in the case any of the participating strings is a WideString the code never finds a match. WideString new findSubstring: key in: self startingAt: start matchTable: CaseInsensitiveOrder In addition, when used in combination with #includesSubstring:caseSensitive: the code raises a "subscript is out of bounds" exception, because the start index points to an different string than the empty one the search is actually performed on. Lukas -- Lukas Renggli www.lukas-renggli.ch

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[Pharo-project] saving headless image on Mac
by Tudor Girba April 25, 2010

April 25, 2010

Hi, I am trying to integrate a Pharo image into a continuous integration system through the command line. For that I need to spawn the image, do something, save and quit. The problem is that on Mac (using 4.2.2beta1U), when I open the resulting image I get a very tiny window instead of the original size. The command below reveals the problem (save-and-quite-image.st is attached): /Applications/Squeak4.2.2beta1U/Squeak\ 4.2.2beta1U.app/Contents/MacOS/ Squeak\ VM\ Opt -headless Pharo-1.0.image THE_PATH/save-and-quit- image.st Could anyone advise me how to proceed to get around this problem? Cheers, Doru -- www.tudorgirba.com "Every thing has its own flow."

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[Pharo-project] Expectation for readFrom:... getting bored to fix bugs.
by stephane ducasse April 25, 2010

April 25, 2010

Hi What are the expectation for DateAndTime>>readFrom? On squeak such tests do not pass. testReadFromFoolProofExtension "Convenient extension without a time, only a date" "self debug: #testReadFromFoolProofExtension" self assert: ('2008' asDateAndTime printString = '2008-01-01T00:00:00+00:00'). self assert: ('2008-08' asDateAndTime printString = '2008-08-01T00:00:00+00:00'). self assert: ('2006-08-28' asDateAndTime printString = '2006-08-28T00:00:00+00:00'). "Regular nanoseconds" self assert: ('2006-08-28T00:00:00.123456789' asDateAndTime printString = '2006-08-28T00:00:00.123456789+00:00'). "Extra picoseconds precision should not spoil the DateAndTime" self assert: ('2006-08-28T00:00:00.123456789000' asDateAndTime printString = '2006-08-28T00:00:00.123456789+00:00'). in Pharo DateAndTime>>rreadFrom: aStream | bc year month day hour minute second nanos offset buffer ch | aStream peek = $- ifTrue: [ aStream next. bc := -1] ifFalse: [bc := 1]. year := (aStream upTo: $-) asInteger * bc. month := (aStream upTo: $-) asInteger ifNil: [1]. day := (aStream upTo: $T) asInteger ifNil: [1]. hour := (aStream upTo: $:) asInteger ifNil: [0]. buffer := '00:' copy. ch := nil. minute := buffer writeStream. [ aStream atEnd | (ch = $:) | (ch = $+) | (ch = $-) ] whileFalse: [ ch := minute nextPut: aStream next. ]. (ch isNil or: [ch isDigit]) ifTrue: [ ch := $: ]. minute := (buffer readStream upTo: ch) asInteger. buffer := '00.' copy. second := buffer writeStream. [ aStream atEnd | (ch = $.) | (ch = $+) | (ch = $-) ] whileFalse: [ ch := second nextPut: aStream next. ]. (ch isNil or: [ch isDigit]) ifTrue: [ ch := $. ]. second := (buffer readStream upTo: ch) asInteger. buffer := '000000000' copy. (ch = $.) ifTrue: [ nanos := buffer writeStream. [ aStream atEnd | ((ch := aStream next) = $+) | (ch = $-) ] whileFalse: [ nanos nextPut: ch. ]. (ch isNil or: [ch isDigit]) ifTrue: [ ch := $+ ]. ]. nanos := buffer asInteger. aStream atEnd ifTrue: [ offset := Duration zero ] ifFalse: [ch := aStream next. ch = $+ ifTrue: [ch := Character space]. offset := Duration fromString: ch asString, '0:', aStream upToEnd, ':0']. ^ self year: year month: month day: day hour: hour minute: minute second: second nanoSecond: nanos offset: offset. It loosk a bit ugly and crashed on some inputs In Squeak they have code that looks cleaner readFrom: aStream | offset date time ch | date := Date readFrom: aStream. [aStream peek isDigit] whileFalse: [aStream next]. time := Time readFrom: aStream. aStream atEnd ifTrue: [ offset := Duration zero ] ifFalse: [ ch := aStream next. ch = $+ ifTrue: [ch := Character space]. offset := Duration fromString: ch asString, '0:', aStream upToEnd, ':0']. ^ self year: date year month: date monthIndex day: date dayOfMonth hour: time hour minute: time minute second: time second nanoSecond: time nanoSecond offset: offset Date ============================================================ For Date we have readFrom: aStream readFrom: pattern: "Read a Date from the stream in any of the forms: <day> <month> <year> (15 April 1982; 15-APR-82; 15.4.82; 15APR82) <month> <day> <year> (April 15, 1982; 4/15/82) Squeak has a better one readFrom: pattern: "Read a Date from the stream in any of the forms: <day> <month> <year> (15 April 1982; 15-APR-82; 15.4.82; 15APR82) <month> <day> <year> (April 15, 1982; 4/15/82) <year>-<month>-<day> (1982-04-15) (ISO8601)" I like the idea to have a readFrom: that is parsing a specific input and that the variations are handled in separate methods. So for DateAndTime we coudl have fuzzyReadFrom: aStream or something like that. Duration ====================================================== Now for Duration readFrom: the pattern is strictly followed "Formatted as per ANSI 5.8.2.16: [-]D:HH:MM:SS[.S]" In pharo it was bogus. So I was considering the one of Squeak, which looks cleaner. Pharo broke for (Duration readFrom: '0:00:00:00.001 ' readStream) nanoSeconds Squeak>>readFrom: aStream "Formatted as per ANSI 5.8.2.16: [-]D:HH:MM:SS[.S]" | sign days hours minutes seconds nanos nanosBuffer | sign := (aStream peekFor: $-) ifTrue: [-1] ifFalse: [1]. days := (aStream upTo: $:) asInteger sign: sign. hours := (aStream upTo: $:) asInteger sign: sign. minutes := (aStream upTo: $:) asInteger sign: sign. seconds := (aStream upTo: $.) asInteger sign: sign. nanosBuffer := '000000000' copy. nanos := WriteStream on: nanosBuffer. [aStream atEnd not and: [aStream peek isDigit]] whileTrue: [nanos nextPut: aStream next]. ^ self days: days hours: hours minutes: minutes seconds: seconds nanoSeconds: (nanosBuffer asInteger sign: sign) Pharo>>readFrom: aStream "Formatted as per ANSI 5.8.2.16: [-]D:HH:MM:SS[.S] To assiste DateAndTime>>#readFrom: SS may be unpadded or absent." | sign days hours minutes seconds nanos ws ch | sign := (aStream peekFor: $-) ifTrue: [-1] ifFalse: [1]. days := (aStream upTo: $:) asInteger sign: sign. hours := (aStream upTo: $:) asInteger sign: sign. minutes := (aStream upTo: $:) asInteger sign: sign. aStream atEnd ifTrue: [seconds := 0. nanos := 0] ifFalse: [ ws := String new writeStream. [ch := aStream next. (ch isNil) | (ch = $.)] whileFalse: [ ws nextPut: ch ]. seconds := ws contents asInteger sign: sign. ws reset. 9 timesRepeat: [ ch := aStream next. ws nextPut: (ch ifNil: [$0] ifNotNil: [ch]) ]. nanos := ws contents asInteger sign: sign]. ^ self days: days hours: hours minutes: minutes seconds: seconds nanoSeconds: nanos. ====================================================== Stef

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April 25, 2010

Hi we started with the guys here to look at the tests that fail in 1.1. We started to fix some of them. Now I would like to have a roadmap for freezing 1.1 - Green tests. - No Preferences. - What are the key other things that we want to get done in 1.1? Stef

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