Squeak-dev February 2006

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141 participants
278 discussions

Re: Monticello and live systems (was Re: 1 day left...)
by Blake 26 Feb '06

26 Feb '06

On Sun, 26 Feb 2006 01:02:05 -0800, Alan Lovejoy <squeak-dev.sourcery(a)forum-mail.net> wrote: > persistable and transportable across address spaces. This is a key, > fundamental benefit of the Naiad/Spoon architecture. Go Craig! My sentiments exactly.

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Email notifications from SqueakSource?
by Andreas Raab 26 Feb '06

26 Feb '06

Hi - Is it possible to get SqueakSource to send email notifications about commits? I'd like to have something that actively reminds me when something has changed - the available RSS feed doesn't really do it for me (mostly because RSS is badly integrated in my usual workflow). I've been looking around for something that would allow this but I couldn't find anything; any help would be greatly appreciated! Cheers, - Andreas

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Re: Very, very preliminary port of Chronos to Squeak published to SqueakMap
by David T. Lewis 25 Feb '06

25 Feb '06

On Fri, Feb 24, 2006 at 10:09:34PM -0800, Alan Lovejoy wrote: > > Initially, Avi does not plan to port the Chronos Time Zone Compiler to > Squeak. Tthe Chronos Time Zone Compiler is used to generate the Chronos > Time Zone <http://www.chronos-st.org/downloads/time-zones.zip> Repository > from the information provided by the Olson Time Zone Database > <http://www.twinsun.com/tz/tz-link.htm> . Note that TimeZoneDatabase (on Squeak Map) provides a complete implementation of this in Squeak. Dave

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still looking for marking string for translation
by Hilaire Fernandes 25 Feb '06

25 Feb '06

Hello people, I am still looking for a way to mark, in image 3.8, string for translation? Does the procedure described at http://minnow.cc.gatech.edu/squeak/402 became obselete? At worst I will have to use directly local language string. Hilaire Fernandes

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Squeaksource does not respond
by Ruben Bakker 25 Feb '06

25 Feb '06

I tried to access http://www.squeaksource.com this morning, but the server does not respond. There is just a timeout. I tried http://kilana.unibe.ch:8888, too. No luck either. Would be great if somebody could solve this problem. Thanks Ruben

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[Web] Dead link on "Online Smalltalk videos"
by Waldemar Dick 25 Feb '06

25 Feb '06

Hi, just as a short side note: the link "Online Smalltalk videos <http://www.esug.org/onlinesmalltalkvideos/>" at http://squeak.org/Documentation/ points to http://www.esug.org/onlinesmalltalkvideos/ which should be http://www.esug.org/resourcesdocsmedia/onlinesmalltalkvideos/ The link "Free Squeak Video Tutorial" at http://squeak.org/Documentation/ points to an empty directory. Greetings, Waldemar Dick

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Re: Very, very preliminary port of Chronos to Squeak published to SqueakMap
by Avi Bryant 25 Feb '06

25 Feb '06

On Feb 24, 2006, at 10:09 PM, Alan Lovejoy wrote: > Avi Bryant is currently working on a port of Chronos to Squeak. He > has published a Monticello package to SqueakMap that contains a > very preliminary port. It is very much a "work in progress." When > Avi is satisfied that the port is sufficiently functional and > stable, he will make a general announcement to that effect. No > promises have been made with respect to when a version suitable for > general use may become available, nor is there any commitment to > provide all the same functionality as is available from the > VisualWorks version. Of course, nothing prevents others from > contributing improvements/enhancements in addition to whatever Avi > publishes. > Alan, thanks for the detailed post, it saves me from having to write one. Yes, for now I've only done a very preliminary port, but I do intend to keep working on it as time permits. It's actually quite a testament to how portably Chronos was written that as much works as it does given the small amount of effort and code that I put in. If anyone would like to help flesh the port out, let me know. Avi

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Very, very preliminary port of Chronos to Squeak published to SqueakMap
by Alan Lovejoy 25 Feb '06

25 Feb '06

Avi Bryant is currently working on a port of Chronos <http://www.chronos-st.org/> to Squeak. He has <http://map.squeak.org/package/46b5731f-5112-4157-94d3-d40c4ed8304d> published a Monticello package to SqueakMap that contains a very preliminary port. It is very much a "work in progress." When Avi is satisfied that the port is sufficiently functional and stable, he will make a general announcement to that effect. No promises have been made with respect to when a version suitable for general use may become available, nor is there any commitment to provide all the same functionality as is available from the VisualWorks version. Of course, nothing prevents others from contributing improvements/enhancements in addition to whatever Avi publishes. Initially, Avi does not plan to port the Chronos Time Zone Compiler to Squeak. Tthe Chronos Time Zone Compiler is used to generate the Chronos Time Zone <http://www.chronos-st.org/downloads/time-zones.zip> Repository from the information provided by the Olson Time Zone Database <http://www.twinsun.com/tz/tz-link.htm> . Since the Chronos Time <http://www.chronos-st.org/downloads/time-zones.zip> Zone Repository a) is available from the Chronos web site <http://www.chronos-st.org/> , and b) is usable "as is" by any Smalltalk implementation (in fact, it would be usable by any programming language, given a sufficiently powerful time zone implementation written in that language,) that's not that big of an issue. It's only recently that I have become at all familiar with Avi's work. Initially, I only knew he was one of the principal authors of Seaside. But <http://map.squeak.org/accountbyid/04ec7571-cb7e-47ea-b1fc-218f7ec45adc> he's done much more than just that (although Seaside is impressive enough by itself.) I am very appreciative of the contributution Avi is making towards porting Chronos to Squeak. Fair warning: As of Sat, 25 Feb 2006 03:31:56 +0000 (Universal Time,) the version on SqueakMap will not work "as is" in versions of Squeak from 3.7 onward (you can load it, but if you execute the initialization/installation "do it" that the pop-up Transcript window suggests, you will then be unable to either save the image or compile any methods.) The problem is caused by the fact that the installation procedure (as implemented in the version currently available from SqueakMap) redefines both DateAndTime and Duration so that they are aliases for the Chronos classes Timepoint and ScientificDuration (respectively,) in place of the native Chronology classes named DateAndTime and Duration (and this issue is precisely why I chose not to use the names "DateAndTime" and "Duration" as class names.) This problem can be fixed if, before evaluating the 'ChronosEnvironment install' "do it" as suggested, the following class method is first implemented: ChronosSqueakEnvironment class>>setProtectedGlobalVariables ProtectedGlobalVariables := Set with: #ScaledDecimal with: #DateAndTime with: #Duration. Avi is using Squeak 3.6 to do the porting work. The Chronology library did not become part of standard Squeak until version 3.7, and so there is no issue raised by (re)defining the globals DateAndTime and Duration as global aliases for Timepoint and ScientificDuration (respectively) in versions of Squeak prior to 3.7. That may well be why Avi is using Squeak 3.6 to do the port. (Squeak badly needs a mechanism to more elegantly handle issues such as this one.) Note that the version currently available from SqueakMap has not been given the ability to access files--so it can't retrieve any time zones from the <http://www.chronos-st.org/downloads/time-zones.zip> Chronos Time Zone Repository, and therefore Olson time zone keys such as 'Americal/Los_Angeles', 'Europe/Paris' and 'Asia/Tokyo' cannot be used to identify a time zone. Nor is there any code that makes any attempt to determine the local time zone from the host operating system, nor any code that provides any locale information. Consequently, the Chronos system time zone simply defaults to Universal Time (which is what the native Chronology library does also, so at least you're no worse off than you were before.) Nevertheless, you can still do quite a bit. For example, after loading and properly initializing Chronos, you can evaluate the following expression to set the Chronos system time zone so that it matches the zone rules that have been in effect since 1996 for CET/CEST (Central European Time): (ChronosTimezone key: #'Europe/Berlin' name: #'Central European Time' initialOffset: (ScientificDuration hours: 1) withAbbreviation: #CET until: (WeekOfMonthDayOfWeek month: 3 week: 0 dayOfWeek: 1) "The 'zeroeth week' means the last week of the month" at: (TimeOfDay hour: 1 minute: 0 second: 0) relativity: #universal thenOffset: (ScientificDuration hours: 2) withAbbreviation: #CEST until: (WeekOfMonthDayOfWeek month: 10 week: 0 dayOfWeek: 1) at: (TimeOfDay hour: 1 minute: 0 second: 0) relativity: #universal) beSystem Then, you can evaluate "Timepoint now" to see the current time. And if you find yourself in Madrid, Paris, Berlin or Amsterdam, the answer will even be correct. However, due to the fact that the Squeak system clock reports local time, setting the Chronos system time zone has no effect on what is displayed when "Timepoint now" is evaluated. It only changes the results of evaluating "Timepoint utNow." On a system whose clock reported Universal Time, the situation would be reversed. --Alan

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experimental mac carbon Squeak 3.8.10beta14.app
by John M McIntosh 25 Feb '06

25 Feb '06

I've posted a new experimental VM 3.8.10beta14 on http:// www.smalltalkconsulting.com/squeak.html Follow the link to the idisk, I have not posted this on the FTP server. Please look in the experimental folder. 1) This VM has changes to drag and drop to allow you to drag and drop images from your browser (aka safari) into Squeak directly. 2) A number of changes to how external plugins are loaded and where we hunt for routines for FFI. 3) Unix file names, with a revert back to macroman as the VM encoding vesus Latin1 which causes issues in the VM. 4) Yet more poking at the MacIntel changes, if anyone else has a MacIntel machine handy please let me know if you would like to be a test subject. With this VM you can use Unix style binaries etc, even use Unix VM plugins. Most of the code comes from the Unix VM however there are some important changes and even fixes. a) I have coded a plist entry SqueakPluginsBuiltInOrLocalOnly that when set to true makes the lookup logic only consider unix libraries or os-x bundles in the ./Plugins folder or the application Resources folder, or as a foo.framework in the /System/ Library/Frameworks/. To turn this feature off and then consider the other 80+ choices of library locations and library names set SqueakPluginsBuiltInOrLocalOnly to false. Turning the feature on avoids a couple of hundred stat calls at startup time as the VM hunts for external versions of internal plugins. Likely developers will need to decide if this flag should be on or off, and perhaps in retrospect I guess having it on would prevent FFI calls to libc, although I've not tested that. b) Should be able to call libraries like libc, assuming the SqueakPluginsBuiltInOrLocalOnly is set correctly. -- ======================================================================== === John M. McIntosh <johnmci(a)smalltalkconsulting.com> 1-800-477-2659 Corporate Smalltalk Consulting Ltd. http://www.smalltalkconsulting.com ======================================================================== ===

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MIDI Time Code synchronization working
by Craig Latta 25 Feb '06

25 Feb '06

Hi-- I wanted to record MIDI events in synchrony with my multi-track audio recorder, so I wrote a MIDIRecorder which chases the MIDI Time Code that the audio recorder puts out. I interpolated the SMPTE quarter-frame messages that MTC uses (every 1/120 second) into 1ms slices for timestamps. I recorded an accelerating drum roll as audio and MIDI and played them back together; they stayed in phase within 1ms. Cool! The MIDIRecorder also does the right thing with the MIDI Machine Control messages that the recorder puts out. I already wrote support for a control surface (the MotorMix), so it should be fun to put it all together. -C -- Craig Latta improvisational musical informaticist www.netjam.org Smalltalkers do: [:it | All with: Class, (And love: it)]

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