June 2016 - Pharo-dev - lists.pharo.org

[ANN] file dialog replacement experiment
by Peter UhnÃ¡k July 17, 2016

July 17, 2016

Hi, last week I stitched together a simple file dialog replacement and today I managed to somewhat finish it. There is still a lot to be desired, but right now it supports things that were the most pain for me: * list of most common places (home, root, image directory, temp) * custom bookmarks by dragging folders from file-pane to bookmark-pane * toggle hidden files (right-click on file listing) * preset file name * filtering files by extensions or patterns and toggling between filters * synchronous and asynchronous mode â You can use it independently of Pharo's native dialogs FDOpenFileDialog new extensionFilters: {'STON files' -> #(ston). 'All files' -> #()}; defaultFolder: FileLocator imageDirectory asFileReference; openModal Or if you feel brave, I have an extended UIManager that will use thisâ¦, and then you can use regular manager commands UIManager default chooseFileMatching: #('*.ston') but you can always go back FDMorphicUIManager new beDefault. "use new dialogs" MorphicUIManager new beDefault. "use old dialogs" and of course the installation itself (I'll add it to catalog soon after I find a way to autogenerate configurations from git tags) Metacello new baseline: 'FileDialog'; repository: 'github://peteruhnak/file-dialog/repository'; load. More info and docs on GitHub https://github.com/peteruhnak/file-dialog Any comments/feedback/bug reports is appreciated. Peter

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bloc status update: june 2016
by Tudor Girba July 13, 2016

July 13, 2016

Hi, Here is a brief update on the status of Bloc. Several of us came together to form a team and work to see Bloc in Pharo 6 at least as a preview. The team communication happens via Slack in a dedicated team, and the goal is to have regular progress/feedback communication on this mailing list. Just because we have a dedicated team does not mean that your feedback is important. In fact, over the last months, Bloc was redesigned again to include the feedback we got here. So, now we have: - Element is responsible for drawing (no more shape) - Interaction area and clipping area are now distinct You can find the current build on top of Pharo 6 here: https://ci.inria.fr/moose/job/bloc/PHARO=alpha,VERSION=development,VM=vmLat… The current team focus goes like this: - Alain is looking at events, - Glenn is playing with creating new elements in Bloc and refactoring the way we can manage , - Alex (Syrel) and Esteban are working on the backend to make rendering faster, - Doru is pretending to do something useful. Cheers, Doru -- www.tudorgirba.com www.feenk.com "What we can governs what we wish."

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UDBCSQLite3Statement>>at:putDateTime: and DateAndTime>>readFrom:defaultOffset:
by Alistair Grant July 12, 2016

July 12, 2016

Hi All, UDBCSQLite3Statement>>at:putDateTime: currently writes date and times using DateAndTime's default print string, i.e. YYYY-MM-DDTHH:MM:SS.mmmmmm+hh:ss SQLite3 doesn't support timezones, and expects text formatted date/times to be: YYYY-MM-DD HH:MM:SS.mmm See: https://www.sqlite.org/datatype3.html The concensus, as far as I can tell, is that UTC times should always be stored (which seems to be the only sensible option). Changing UDBCSQLite3Statement>>at:putDateTime: to: at: aColumn putDateTime: aDateTime "Put the supplied DateAndTime in column aColumn. SQLite3 supports three date/time formats: text, real (Julian day), integer (unix seconds). We use the ISO8601 text format: YYYY-MM-DD HH:MM:SS.SSS See https://www.sqlite.org/datatype3.html" | s | s := UDBCSQLite3DateTimeString streamContents: [ :stream | |utc | utc := aDateTime asDateAndTime asUTC. utc printYMDOn: stream. stream nextPut: Character space. utc printHMSOn: stream. stream nextPut: $.. stream nextPutAll: ((aDateTime nanoSecond / 1000000) rounded printPaddedWith: $0 to: 3) ]. ^ self library with: handle at: aColumn putString: s writes date / times in the correct format. Note that SQLite3 doesn't do much in the way of format checking, so the old implementation didn't raise an error, but can cause problems if the database is shared with other applications that follow the rules (which is why I hit this problem). To provide some backward compatibility, and follow the rule of being strict in what you write and forgiving in what you read, we need to modify UDBCSQLite3Statement>>dateTimeAt: to accept timezones when supplied, or default to UTC time. Unfortunately, the current DateAndTime>>readFrom: method assumes the local timezone if none is specified. I can think of two approaches to solve this: 1. Modify UDBCSQLite3Statement>>dateTimeAt: to add 'Z' to the string if no timezone is specified, i.e. make UTC explicit. 2. Extend DateAndTime class to support #readFrom:defaultOffset: so that UTC can be specified as the default, instead of the local timezone, and modify UDBCSQLite3Statement>>dateTimeAt: to use UTC as the default. I prefer the second approach, but realise that this is a change to the core Pharo classes, so will implement the first if that is the concensus. I've included the modified methods for the second approach below. The existing automated tests fail if only #at:putDateTime: is modified, and succeed if both #at:putDateTime: and #dateTimeAt: are modified. What do you think? Thanks! Alistair UDBCSQLite3Statement>>dateTimeAt: aColumn | utc | utc := DateAndTime readFrom: (self library stringFrom: handle at: aColumn) readStream defaultOffset: Duration zero. ^utc offset: DateAndTime localOffset. All methods from DateAndTime class>> readFrom: aStream defaultOffset: defaultOffset "Parse and return a new DateAndTime instance from stream, as a Date, an optional Time and an optional TimeZone offset. The time defaults to midnight, the timezone to defaultOffset" "self readFrom: '2013-03-04T23:47:52.876+01:00' readStream" | date time offset | date := Date readFrom: aStream. [ aStream atEnd or: [ '0123456789Z+-' includes: aStream peek ] ] whileFalse: [ aStream next ]. ('0123456789' includes: aStream peek) ifTrue: [ time := Time readFrom: aStream ] ifFalse: [ time := Time midnight ]. aStream skipSeparators. offset := self readTimezoneOffsetFrom: aStream default: defaultOffset. ^ self year: date year month: date monthIndex day: date dayOfMonth hour: time hour minute: time minute second: time second nanoSecond: time nanoSecond offset: offset readFrom: aStream "Parse and return a new DateAndTime instance from stream, as a Date, an optional Time and an optional TimeZone offset. The time defaults to midnight, the timezone to the local offset" "self readFrom: '2013-03-04T23:47:52.876+01:00' readStream" ^self readFrom: aStream defaultOffset: self localOffset. readTimezoneOffsetFrom: stream default: defaultOffset "Read and return an optional timezone offset in the form of [+|-]hh[[separator]mm[[separator]ss]] or Z from stream as a duration. If there is no offset, return the defaultOffset." | sign hour minute second | (stream peekFor: $Z) ifTrue: [ ^ Duration zero ]. hour := minute := second := 0. ^ ('+-' includes: stream peek) ifTrue: [ sign := stream next = $- ifTrue: [ -1 ] ifFalse: [ 1 ]. hour := self readTwoDigitIntegerFrom: stream. (self readOptionalSeparatorFrom: stream) ifNotNil: [ minute := self readTwoDigitIntegerFrom: stream. (self readOptionalSeparatorFrom: stream) ifNotNil: [ second := Integer readFrom: stream ] ]. Duration seconds: sign * ((hour * 3600) + (minute * 60) + second) ] ifFalse: [ defaultOffset ] readTimezoneOffsetFrom: stream "Read and return an optional timezone offset in the form of [+|-]hh[[separator]mm[[separator]ss]] or Z from stream as a duration. If there is no offset, return the local offset." ^self readTimezoneOffsetFrom: stream default: self localOffset

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SessionManager and SystemSettings?
by Nicolai Hess July 11, 2016

July 11, 2016

My stored settings aren't loaded at start up anymore (for example, in Pharo 60107). any ideas?

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lineConversion for WriteStream
by Peter UhnÃ¡k July 10, 2016

July 10, 2016

Is there a reason why only MultiByteFileStream provides lineEndConvention: and not WriteStream? The problem is that if I use MemoryStore in tests it breaks, because DiskStore and MemoryStore return different write streams. '/tmp/test.txt' asFileReference writeStream ==> "MultiByteFileStream: '/tmp/test.txt'". (FileSystem memory / 'test.txt') writeStream ==> "a WriteStream" Can we either: a) have `lineEndConvention:` directly in the WriteStream, or b) have MemoryStore return MultiByteFileStream, or c) both? Thanks, Peter

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AthensCairoSurface not getting garbage collected
by J.F. Rick July 9, 2016

July 9, 2016

I'm using Athens rendering for my multi-touch applications on Pharo5. As part of that, I create a surface: surface := AthensCairoSurface extent: bounds extent asIntegerPoint. Though the object creating that surface is deleted, the surface sticks around. So, each time I run the app, I get another instance of AthensCairoSurface hanging around. That means all the forms stick around as well. So my image can quickly grow towards the 1GB size. Is there anything I can do about that? Can I manually get the surface to delete itself? Cheers, Jeff

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Having comments for pragma?
by Alexandre Bergel July 8, 2016

July 8, 2016

Hi! A pragma may be very obscure. For example, I do: Pragma allInstances anyOne => <debuggerCompleteToSender> If I want to know more about this <debuggerCompleteToSender> is actually quite challenging. I see many methods having that pragma, but not idea what it is for. I see that Halt>>signalerContext and Process>>complete: that use that pragma somehow. But still, I have no idea when I should use that pragma in my method. What about having a way to comment pragma? Maybe something like -=-=-=-=-=-= Object subclass: #Pragma instanceVariableNames: 'method keyword arguments comment' -=-=-=-=-=-= And a simple way to annotate pragmas? Just an idea. Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

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pharo 5 segfault (stack size?) [FreeBSD]
by Petr Fischer July 6, 2016

July 6, 2016

Hello, I got some random segfaults (while loading Seaside) with 32 bit spur vm on FreeBSD - can someone (with low level knowledge) decode attached log? Is this some problem with stack size? Can I fix this? Log: http://pastebin.com/raw/NpFUnjh0 There is "**StackOverflow**" lines n the log... Thanks! pf

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Percent-encoding problem
by Bernhard Pieber June 30, 2016

June 30, 2016

I have a web service where I have to use a URL with percent-encoded (URL encoded) special characters â German Umlauts â but not using UTF8 but ISO-8859-1. I have been given the following table for the âcorrectâ encodings: http://www.degraeve.com/reference/urlencoding.php I found out that I can use the following to get the encoding I need (%FC): ZnPercentEncoder new characterEncoder: (ZnCharacterEncoder newForEncoding: 'iso-8859-1'); encode: 'Ã¼'. However, when I try to use the encoded URL with ZnClient ZnClient new url: 'http://example.com/%FC'; get. I get a ZnUTF8Encoder>>errorIllegalLeadingByte (Illegal leading byte for utf-8 encoding). Any help is greatly appreciated. Cheers, Bernhard

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[pharo-project/pharo-core] b51a9d: 60128
by GitHub June 30, 2016

June 30, 2016

Branch: refs/heads/6.0 Home: https://github.com/pharo-project/pharo-core Commit: b51a9d4f140ce072fc066ca35a7fa3e7fe3b55b4 https://github.com/pharo-project/pharo-core/commit/b51a9d4f140ce072fc066ca3… Author: Jenkins Build Server <board(a)pharo-project.org> Date: 2016-06-30 (Thu, 30 Jun 2016) Changed paths: M ConfigurationOfGTDebugger.package/ConfigurationOfGTDebugger.class/instance/symbolic versions/stable_.st A ConfigurationOfGTDebugger.package/ConfigurationOfGTDebugger.class/instance/versions/version210_.st M ConfigurationOfGTDebugger.package/ConfigurationOfGTDebugger.class/instance/versions/version29_.st M ConfigurationOfGTEventRecorder.package/ConfigurationOfGTEventRecorder.class/instance/symbolic versions/stable_.st A ConfigurationOfGTEventRecorder.package/ConfigurationOfGTEventRecorder.class/instance/versions/version018_.st M ConfigurationOfGTInspectorCore.package/ConfigurationOfGTInspectorCore.class/instance/symbolic versions/stable_.st A ConfigurationOfGTInspectorCore.package/ConfigurationOfGTInspectorCore.class/instance/versions/version315_.st M ConfigurationOfGTSpotter.package/ConfigurationOfGTSpotter.class/instance/symbolic versions/stable_.st A ConfigurationOfGTSpotter.package/ConfigurationOfGTSpotter.class/instance/versions/version212_.st M ConfigurationOfGToolkitCore.package/ConfigurationOfGToolkitCore.class/instance/symbolic versions/stable_.st M ConfigurationOfGToolkitCore.package/ConfigurationOfGToolkitCore.class/instance/versions/version322_.st A ConfigurationOfGToolkitCore.package/ConfigurationOfGToolkitCore.class/instance/versions/version323_.st A ConfigurationOfGlamourCore.package/ConfigurationOfGlamourCore.class/instance/baselines/baseline34_.st M ConfigurationOfGlamourCore.package/ConfigurationOfGlamourCore.class/instance/symbolic versions/development_.st M ConfigurationOfGlamourCore.package/ConfigurationOfGlamourCore.class/instance/symbolic versions/stable_.st A ConfigurationOfGlamourCore.package/ConfigurationOfGlamourCore.class/instance/versions/version417_.st R ScriptLoader60.package/ScriptLoader.class/instance/pharo - scripts/script60127.st A ScriptLoader60.package/ScriptLoader.class/instance/pharo - scripts/script60128.st R ScriptLoader60.package/ScriptLoader.class/instance/pharo - updates/update60127.st A ScriptLoader60.package/ScriptLoader.class/instance/pharo - updates/update60128.st M ScriptLoader60.package/ScriptLoader.class/instance/public/commentForCurrentUpdate.st Log Message: ----------- 60128 Moose http://files.pharo.org/image/60/60128.zip

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