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

Re: [Pharo-users] If you have to do web data scraping, what tool would you use?
by Andy Burnett June 27, 2016

June 27, 2016

I had a similar question, which led me to the Webdriver project (now part of selenium). I haven't done any experiments yet, but the idea of driving the browser via its API is appealing. The Parasol project says it is a Webdriver implementation for Pharo, and it looks quite exciting. The build is currently failing, but that seems to be a gemstone problem. https://github.com/SeasideSt/Parasol/blob/master/README.md If you have time to play with it I would love to hear your experience. Cheers Andy >

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Xtreams: Debugging Grammars
by Sean P. DeNigris June 26, 2016

June 26, 2016

I converted parts of rfc 5322 to the following: grammarEmailAddress ^'addrspec <- localpart "@" domain localpart <- dotatom / quotedstring /* obs-local-part */ domain <- dotatom / domainliteral /* obs-domain */ domainliteral <- [CFWS] "[" *([FWS] dtext) [FWS] "]" [CFWS] dtext <- [\x000021-\x000050] / /* Printable US-ASCII */ [\x000054-\x00007E] /* characters not including */ /* / obs-dtext ; "[", "]", or "\" */ /* rfc5234 B.1 */ ALPHA <- [\x000041-\x00005A] / [\x000061-\x00007A] DIGIT <- [\x000030-\x000039] HTAB <- [\x000009] /* horizontal tab */ SP <- [\x000020] WSP <- SP / HTAB /* 3.2.2. Folding White Space and Comments */ FWS <- ([*WSP CRLF] 1*WSP) /* obs-FWS */ ctext <- [\x000021-\x000027] / [\x00002A-\x00005B] / [\x00005D-\x00007E] ccontent <- ctext / quotedpair / comment comment <- "(" *([FWS] ccontent) [FWS] ")" CFWS <- (1*([FWS] comment) [FWS]) / FWS /* 3.2.1. Quoted characters */ quotedpair <- ("\" (VCHAR / WSP)) /* / obs-qp */ /* 3.2.3. Atom */ atext <- ALPHA / DIGIT / "!" / "#" / "$" / "%" / "&" / "''" / "*" / "+" / "-" / "/" / "=" / "?" / "^" / "_" / "`" / "{" / "|" / "}" / "~" atom <- [CFWS] 1*atext [CFWS] dotatomtext <- 1*atext *("." 1*atext) dotatom <- [CFWS] dotatomtext [CFWS] /* 3.2.4. Quoted Strings */ qtext <- [\x000021] / /* Printable US-ASCII */ [\x000023-\x00005B] / /* characters not including */ [\x00005D-\x00007E] /* "\" or the quote character */ /* obs-qtext */ qcontent <- qtext / quotedpair quotedstring <- [CFWS] DQUOTE *([FWS] qcontent) [FWS] DQUOTE [CFWS]' When I evaluate: parser := PEGParser parserPEG parse: 'Grammar' stream: PEGParser grammarEmailAddress actor: PEGParserParser new. I get: KeyNotFound: key 'quotedstring' not found in Dictionary How am I supposed to debug that to find the typo in my giant string above?! ----- Cheers, Sean -- View this message in context: http://forum.world.st/Xtreams-Debugging-Grammars-tp4902581.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Xtreams: Extending Bootstrap
by Sean P. DeNigris June 26, 2016

June 26, 2016

I copy-pasted the addr-spec grammar from rfc5322 and was converting it to Xtreams format. One PITA was converting all the decimal values to hex e.g. "%d97" -> "\x000061". I wanted to extend the Xtream grammar to handle "/d97". I extended PEGParserGenerator and PEGParserParser with the following: Escape: backslash character: character hexes: hexes ... character = $d ifTrue: [^(String withAll: hexes) asNumber asCharacter] But I couldn't figure out how to put this extension into action. PEGParser>>parserBootstrap has a comment "This method was generated with the following code: PEGParser parserPEG parse: 'Grammar' stream: PEGParser grammarPEG actor: PEGParserGenerator new", but evaluating that after extending produced the same output as the original. What am I missing? Thanks. ----- Cheers, Sean -- View this message in context: http://forum.world.st/Xtreams-Extending-Bootstrap-tp4902579.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Fogbugz 13260 reappears?
by Alistair Grant June 26, 2016

June 26, 2016

Hi All, I'm currently regularly hitting an issue with the debugger where inspecting a temporary variable shows the string "error obtaining field value" rather than the actual value. Selecting the temporary variable and attempting to inspect it in the code pane results in: True(Object)>>doesNotUnderstand: #indexInTempVectorFromIR: OCVectorTempVariable>>searchFromContext:scope: DebuggerMethodMapOpal>>tempNamed:in: DebuggerMethodMapOpal>>namedTempAt:in: Context>>namedTempAt: GlorpSession>>DoItIn: OpalCompiler>>evaluate RubSmalltalkEditor>>evaluate:andDo: RubSmalltalkEditor>>highlightEvaluateAndDo: [ textMorph textArea editor highlightEvaluateAndDo: ann action. textMorph shoutStyler style: textMorph text ] in [ textMorph textArea handleEdit: [ textMorph textArea editor highlightEvaluateAndDo: ann action. textMorph shoutStyler style: textMorph text ] ] in GLMMorphicPharoMethodRenderer(GLMMorphicPharoCodeRenderer)>>actOnHighlightAndEvaluate: in Block: [ textMorph textArea editor highlightEvaluateAndDo...etc... RubEditingArea(RubAbstractTextArea)>>handleEdit: [ textMorph textArea handleEdit: [ textMorph textArea editor highlightEvaluateAndDo: ann action. textMorph shoutStyler style: textMorph text ] ] in GLMMorphicPharoMethodRenderer(GLMMorphicPharoCodeRenderer)>>actOnHighlightAndEvaluate: in Block: [ textMorph textArea... WorldState>>runStepMethodsIn: WorldMorph>>runStepMethods WorldState>>doOneCycleNowFor: WorldState>>doOneCycleFor: WorldState>>doOneSubCycleFor: WorldMorph>>doOneSubCycle MenuMorph>>invokeModalAt:in:allowKeyboard: MenuMorph>>invokeModal: MenuMorph>>invokeModal [ :menu | menu setInvokingView: self editor. menu invokeModal. self changed. ^ true ] in RubEditingArea(RubAbstractTextArea)>>yellowButtonActivity: in Block: [ :menu | ... MenuMorph(Object)>>ifNotNilDo: RubEditingArea(RubAbstractTextArea)>>yellowButtonActivity: RubEditingArea(RubAbstractTextArea)>>mouseDown: RubEditingArea(Morph)>>handleMouseDown: MouseButtonEvent>>sentTo: RubEditingArea(Morph)>>handleEvent: MorphicEventDispatcher>>dispatchMouseDown:with: MorphicEventDispatcher>>handleMouseDown: This is in: Pharo5.0 Latest update: #50757 OS: 4.6.2-1-ARCH It appears to be a resurrection of https://pharo.fogbugz.com/f/cases/13260/ I'm hitting the problem by executing (using the example from the Glorp chapter in Pharo in Progress): session inUnitOfWorkDo: [ | person | person := session readOneOf: Person where: [ :each | each lastName = 'Locke' ]. person birthDate: Date today ] Stepping in to GlorpSession>>inUnitOfWorkDo: and attempting to inspect 'result' after it has been assigned. Is this a known problem, should I open a new issue, or...? Thanks! Alistair

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Image freezes on Linux if it was previously saved on Windows
by Maximiliano Tabacman June 25, 2016

June 25, 2016

Hi. I am not sure if this issue is known, or what files to provide to help fix it.In the latest image (60112, but my guess is that this will happen with all Pharo 6 images) if I download a clean latest image, start Pharo on Windows, save the image, then copy it to a Linux environment, and try to start it, the image freezes even before displaying the workspace (I get an unresponsive black and white box in Linux, only killable through xkill command).I am sure this did not happen back with Pharo 5.If I output "./pharo Image.image > log.txt" I end up with a huge file since there seems to be an infinite loop while trying to determine the FileStore to use. The first lines of this output file, before going into the loop, are: out of memory /home/theUser/Downloads/Pharo6/pharopharo VM version: 5.0 #1 Tue Jun 21 12:37:33 CEST 2016 gcc 4.6.3 [Production Spur ITHB VM]Built from: CoInterpreter VMMaker.oscog-HolgerHansPeterFreyther.1880 uuid: 16138eb3-2390-40f5-a6c8-15f0494936f8 Jun 21 2016With: StackToRegisterMappingCogit VMMaker.oscog-HolgerHansPeterFreyther.1880 uuid: 16138eb3-2390-40f5-a6c8-15f0494936f8 Jun 21 2016Revision: https://github.com/pharo-project/pharo-vm.git Commit: 9638b0190a9fc01479bfb752becd96edfd253c8c Date: 2016-06-21 12:29:26 +0200 By: GitHub <noreply(a)github.com> Jenkins build #594Build host: Linux pharo-linux 3.2.0-31-generic-pae #50-Ubuntu SMP Fri Sep 7 16:39:45 UTC 2012 i686 i686 i386 GNU/Linuxplugin path: /home/theUser/Downloads/Pharo6/ [default: /home/theUser/Downloads/Pharo6/] C stack backtrace & registers:*./pharo[0x80c133c]./pharo(error+0x17)[0x80c1547]./pharo[0x809a26c]./pharo[0x809a301]./pharo[0x809a53d]./pharo[0x809bf13]./pharo[0x80a6b61]./pharo[0x80ae4ca]./pharo[0x80ae6ba]./pharo[0x80af07f]./pharo[0x80afcf4]./pharo(ceSendsupertonumArgs+0x1d8)[0x80b0098][0x990008d][0x990de03][0x99090af][0x9900b70][0x990dda3][0x990de03][0x99090af][0x9900b40][0xffe95808] Smalltalk stack dump:0xffe9e9f8 I MacStore class(Class)>subclassesDo: 0xa3393f0: a(n) MacStore class0xffe9ea14 M MacStore class(Behavior)>allSubclassesDo: 0xa3393f0: a(n) MacStore class0xffe9ea34 M [] in UnixStore class(Behavior)>allSubclassesDo: 0xa339380: a(n) UnixStore class0xffe9ea58 M Array(SequenceableCollection)>do: 0x9ded798: a(n) Array0xffe9ea7c I UnixStore class(Class)>subclassesDo: 0xa339380: a(n) UnixStore class0xffe9ea98 M UnixStore class(Behavior)>allSubclassesDo: 0xa339380: a(n) UnixStore class0xffe9eab8 M [] in DiskStore class(Behavior)>allSubclassesDo: 0xa339310: a(n) DiskStore class0xffe9eadc M Array(SequenceableCollection)>do: 0x9ded710: a(n) Array0xffe9d7c8 I DiskStore class(Class)>subclassesDo: 0xa339310: a(n) DiskStore class0xffe9d7e4 M DiskStore class(Behavior)>allSubclassesDo: 0xa339310: a(n) DiskStore class0xffe9d800 M DiskStore class>activeClass 0xa339310: a(n) DiskStore class0xffe9d81c M DiskStore class>currentFileSystem 0xa339310: a(n) DiskStore class0xffe9d834 M DiskStore class>current 0xa339310: a(n) DiskStore class0xffe9d84c M DiskStore class>delimiter 0xa339310: a(n) DiskStore class0xffe9d864 M DiskStore(FileSystemStore)>delimiter 0x9deb478: a(n) DiskStore0xffe9d884 M DiskStore(FileSystemStore)>pathFromString: 0x9deb478: a(n) DiskStore0xffe9d8a4 M DiskStore>defaultWorkingDirectory 0x9deb478: a(n) DiskStore0xffe9d8bc M FileSystem>initializeWithStore: 0x9deb488: a(n) FileSystem0xffe9d8dc M FileSystem class>store: 0xa2e2978: a(n) FileSystem class0xffe9d8f8 M DiskStore class>currentFileSystem 0xa339310: a(n) DiskStore class ... and so on...from #currentFileSystem to #store: and again... Thanks for any feedback and/or insight on how I should proceed to avoid this from happening, or what bug should I monitor to know when this might be fixed.

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Pharo 5, seaside 3.2 and magritte 3
by francescoagati June 25, 2016

June 25, 2016

Hi, i have try yo use magritte 3 and seaside 3.2 inside pharo 5. With seaside works all good. But when i try to install magritte 3. Magritte say that need the seaside html5 canvas package. There is compatibility between magritte3 and seaside 3.2 on pharo 5? Thanks Francesco -- View this message in context: http://forum.world.st/Pharo-5-seaside-3-2-and-magritte-3-tp4902903.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Coral?
by Yuriy Tymchuk June 25, 2016

June 25, 2016

Hi, what is the status of Coral? Iâve heard that someone is supposed to work on it, but even the main webpage I know is down: http://rmod.lille.inria.fr/coral/ Uko

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Better color contrast for class extensions in dark theme
by Offray Vladimir Luna CÃ¡rdenas June 25, 2016

June 25, 2016

Hi :), I'm enjoying the Pharo Dark Theme a lot (in fact my tweet on a 10 minutes hack about it[1] have more impact that the tweets with month and a half work behind for Panama Papers[2]... that's life :-P), but I still have some suggestions on color contrast, particularly when you're doing class extensions and the light gray over blue makes the reading really difficult (see screenshot at bottom). [1] https://twitter.com/offrayLC/status/738828257680850944 [2] https://twitter.com/offrayLC/status/729069808684285953 Hope this helps to improve this theme. Cheers, Offray

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catalog will be down 1hr
by Esteban Lorenzano June 24, 2016

June 24, 2016

Hi, I will apply some updates to catalog (backend, they will not be visible) cheers, Esteban

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Pharo crashing under new Fedora 24 (64bits plus 32bits libraries)
by Casimiro - GMAIL June 24, 2016

June 24, 2016

Pharo 5 crashes. VM does a SIGSEGV 0x00000000 at start Running GDB I got: (gdb) run Starting program: /home/CdAB63/Downloads/pharo5.0/bin/pharo Missing separate debuginfos, use: dnf debuginfo-install glibc-2.23.1-8.fc24.i686 [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". Program received signal SIGSEGV, Segmentation fault. 0x00000000 in ?? () (gdb) backtrace full #0 0x00000000 in ?? () No symbol table info available. #1 0xf7f3dd7e in __pthread_once_slow () from /lib/libpthread.so.0 No symbol table info available. #2 0xf7aa9c05 in ?? () from /lib/libGL.so.1 No symbol table info available. #3 0xf7a722ab in ?? () from /lib/libGL.so.1 No symbol table info available. #4 0xf7fe8da1 in call_init.part () from /lib/ld-linux.so.2 No symbol table info available. #5 0xf7fe8f00 in _dl_init () from /lib/ld-linux.so.2 No symbol table info available. #6 0xf7fed80f in dl_open_worker () from /lib/ld-linux.so.2 No symbol table info available. #7 0xf7fe8c91 in _dl_catch_error () from /lib/ld-linux.so.2 No symbol table info available. #8 0xf7fecd89 in _dl_open () from /lib/ld-linux.so.2 No symbol table info available. #9 0xf7f4dc05 in dlopen_doit () from /lib/libdl.so.2 No symbol table info available. #10 0xf7fe8c91 in _dl_catch_error () from /lib/ld-linux.so.2 No symbol table info available. #11 0xf7f4e35d in _dlerror_run () from /lib/libdl.so.2 No symbol table info available. #12 0xf7f4dcae in dlopen@@GLIBC_2.1 () from /lib/libdl.so.2 No symbol table info available. #13 0x080bd60f in tryLoading () No symbol table info available. #14 0x080bd751 in ioLoadModule () No symbol table info available. #15 0x080bf18b in queryLoadModule () No symbol table info available. #16 0x080bf27f in queryModule () No symbol table info available. #17 0x080bf2c7 in loadImplicit () No symbol table info available. #18 0x0805ccd7 in main () No symbol table info available. (gdb) -- The information contained in this message is confidential and intended to the recipients specified in the headers. If you received this message by error, notify the sender immediately. The unauthorized use, disclosure, copy or alteration of this message are strictly forbidden and subjected to civil and criminal sanctions. == This email may be signed using PGP key *ID: 0x4134A417*

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