March 2015 - Pharo-users - lists.pharo.org

SmaCC: First steps
by kilon alios March 3, 2015

March 3, 2015

Ok I have read a few times of the tutorial of Smacc in here http://www.refactoryworkers.com/SmaCC/ASTs.html and I am also following the help tool documentation inside pharo for SmaCC and I have to say I am very confused. Please bare with me because I am extremely noob when it comes to parsing, this is my first effort. Now the way I understand it so far, is that SmaCC uses a syntax similar to regex expressions to define parsers and scanners. Scanners evaluate a string to see that it contains a valid form and parser divide to parts named as "tokens" and help in the creating of ASTs which are basically hierarchy tree containing the syntax elements of a language. Now in order to make SmaCC work I need to use the SmaCC tool that comes with pharo . The smacc tool takes two inputs a scanner and a parser class. Does that mean I need to create that parser and scanner class ? I thought since I define the syntax that those things would be generated by the tool. What I need to define exactly ? Why when I select the PythonScanner2 and PythonParser2 and click then Compile LR it gives a MNU receiver of method is nil ? I am using latest Pharo 4 image. My goal is to parse python types to similar pharo objects. I get those python types as strings and my main focus in lists, dictionaries and tuples . The tricky part is that one can contain the other inside in every imagined way. The way I understand it I will need something called "transformations" to convert those python types to OrderedCollections, Arrays etc and anything would make more sense for a pharo coder. Additionally what is the meaning of the vertibal bar ? --> | eg. | Number Are there any other tutorials that can help a beginner like me to understand these concepts ? I am not looking for someone to give me the solution to the plate, I would love to learn and understand parsing because I am very interested into making Pharo easy to mix with Python code and allow Pharo to use Python libraries without the user having to learn or code Python :) As you may imagine this is a crucial ingredient for my project Ephestos which tries to use Pharo to script Blender by either replacing or cooperating with blender python. So learning a good way to parse pharo code to python code and vice versa is extremely important for me.

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roassal pixel rendering
by Peter UhnÃ¡k March 3, 2015

March 3, 2015

Hi, I've been experiencing weird behavior with pixel rendering... basically one pixel lines will get blurred for some reason even though there is no half-pixel overlapping. Here is a test code (screenshots attached below). Without the labels the left box will be blurred while the right is better (even though it still has slight shadow); when I add labels however their behavior will switch. What I would expect is to have nice sharp lines all the time. Is this Athens issue? Roassal? Pharo? Its ugly both on Linux and Windows. ==================================== | view box1 box2 | view := RTView new. box1 := RTBox new width: 50; height: 51; fillColor: Color transparent; borderColor: Color black; elementOn: '50@51'. view add: box1. box2 := RTBox new width: 51; height: 50; fillColor: Color transparent; borderColor: Color black; elementOn: '51@50'. view add: box2. "box1 @ RTLabelled. box2 @ RTLabelled." box1 translateTo: -50 @ 0. box2 translateTo: 50 @ 0. view open ==================================== Peter

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Re: [Pharo-users] Fwd: [Pharo Consortium] Your organization application has been rejected.
by ClÃ©ment Bera March 3, 2015

March 3, 2015

Well, this year google it looks like accepted less organizations. 2012: 180 organizations accepted. 2013: 177 organizations accepted. 2014: 190 organizations accepted. 2015: 137 organizations accepted. A few projects with ESUG could be nice for sure. But there we will have in the same issues again: typically, a student cannot in 3 months make his project working for all existing smalltalk, ... 2015-03-03 9:12 GMT+01:00 Joachim Tuchel <jtuchel(a)objektfabrik.de>: > Bad news. I am eager to hear if there is something to learn from their > feedback. > > Now that both ESUG and Pharo have been rejected two years in a row, maybe > it is time to think about ways to revive, or re-promote, the ESUG > initiatives to sponsor student projects. > > Joachim > > Am 03.03.2015 08:59 schrieb Serge Stinckwich <serge.stinckwich(a)gmail.com>: > > > > Bad news from Google ... > > We will ask some explanations with Uko. > > > > > > ---------- Forwarded message ---------- > > From: <no-reply(a)google-melange.appspotmail.com> > > Date: Mon, Mar 2, 2015 at 7:56 PM > > Subject: [Pharo Consortium] Your organization application has been > rejected. > > To: serge.stinckwich(a)gmail.com > > > > > > Thank you for submitting Pharo Consortium's application to Google > > Summer of Code 2015. Unfortunately, we were unable to accept your > > organization's application at this time. Every year we receive many > > more applications than we are able to accommodate, and we would > > encourage you to reapply for future instances of the program. > > > > If you would like some general feedback on why your organization was > > not accepted, please consider attending the IRC meeting in #gsoc on > > Freenode on Friday, 6 March, 2015 at 16:00 UTC. Please note that the > > feedback meeting will be limited to the first 50 organizations to > > queue up (queuing in the channel will begin at 15:30 UTC). You are > > also more than welcome to just email the OSPO team at > > ospoteam(a)gmail.com directly for email feedback about your application > > as well. > > > > Best regards, > > > > > > -- > > Serge Stinckwich > > UCBN & UMI UMMISCO 209 (IRD/UPMC) > > Every DSL ends up being Smalltalk > > http://www.doesnotunderstand.org/ > > > > >

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1 Dollar recogniser in Pharo
by stepharo March 3, 2015

March 3, 2015

HI does any of you ported the 1Dollar recogniser from Squeak to Pharo? Stef

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Git (gitfiletree) on Pharo vs Windows
by Jan B. March 3, 2015

March 3, 2015

Hello We are moving our project from smalltalkhub to github. Gitfiletree seems to be working as expected on linux, but there are some of us (well, me) who would like to contribute from Windows, but I am unable to make it working (which is, of course, also "as expected" :) ). What do I have: Windows 7 64bit Pharo 4 (#40496) Pharo VM for win, tried both stable (371 from 2014-09-25) and latest (410 from 2015-02-17) git version 1.9.5.msysgit.0 What did I try: 1) using Git for Windows from http://git-scm.com/downloads 2) cloning our project into ~/Pharo/repo (this created folder structure ~/Pharo/repo/dynacase/repository where all package folders are, along with .git folder in ~Pharo/repo/dynacase 3) downloading clean Pharo 4 platform 4) running from playground (tried both MetaRepoForPharo40 and 30): Gofer new url: 'http://smalltalkhub.com/mc/Pharo/MetaRepoForPharo40/main'; configurationOf: 'GitFileTree'; loadDevelopment. 5) this step I tried only once in few tries: updating all OSProcess and CommandShell packages to latest commits 6) adding repository to Monticello, selected gitfiletree://, selected folder ~/Pharo/repo/dynacase/repository , OK Result was being swamped by exceptions every time. When I did step 5, I got different exceptions and, also, windows command line has opened (but "empty", ie. like if I opened it myself in folder with Pharo.exe and left like that) Only thing that worked for me was adding this local repository as regular filetree (not gitfiletree), commiting there, and than commiting same thing once again with git via command line (or git bash). I would like to ask for help with making it work somehow better. Here are saved images from moments when I confirmed adding gitfiletree repository with those mentioned exceptions and errors: https://www.mediafire.com/folder/879qs8srf5ice/PharoGitConfigs (30 = using MetaRepoForPharo30, 40 = using MetaRepoForPharo40, latest = using MetaRepoForPharo40 + loading latest packages) Thank you Jan BlizniÄenko -- View this message in context: http://forum.world.st/Git-gitfiletree-on-Pharo-vs-Windows-tp4806791.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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Hacking a SOAP call - Checking a EU VAT number
by Sven Van Caekenberghe March 3, 2015

March 3, 2015

We have no SOAP implementation in Pharo (yet). But that does not mean we cannot do simple SOAP calls. Here is a practical example: checking the validity of a EU VAT number. This is a public service offered by the EU through a SOAP API. The WSDL can be found here: http://ec.europa.eu/taxation_customs/vies/checkVatService.wsdl >From this we know that the endpoint is http://ec.europa.eu/taxation_customs/vies/services/checkVatService When you paste the WSDL URL in http://wsdlbrowser.com you can explore the API (this site parses the WSDL to reveal its contents). The call that we need is called 'checkVat'. We can copy the call template and POST it to the endpoint, manually. If we load the XML Parser, we can interpret the result. Here is the complete code: | xml result | xml := ZnEntity with: ( '<?xml version="1.0" encoding="UTF-8"?> <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="urn:ec.europa.eu:taxud:vies:services:checkVat:types"> <SOAP-ENV:Body> <ns1:checkVat> <ns1:countryCode>{1}</ns1:countryCode> <ns1:vatNumber>{2}</ns1:vatNumber> </ns1:checkVat> </SOAP-ENV:Body> </SOAP-ENV:Envelope>' format: #('LU' '20165772')) type: ZnMimeType applicationXml. result := ZnClient new url: 'http://ec.europa.eu/taxation_customs/vies/services/checkVatService'; entity: xml; contentReader: [ :entity | XMLDOMParser parse: entity contents ]; post. ((result allElementsNamed: 'checkVatResponse') first elementsCollect: [ :each | each name -> each contentString ]) asDictionary. => a Dictionary( 'address'->'31, RUE STE ZITHE L-2763 LUXEMBOURG' 'countryCode'->'LU' 'name'->'ITUNES S.A R.L.' 'requestDate'->'2015-03-03+01:00' 'valid'->'true' 'vatNumber'->'20165772' ) Of course, this will only work with simple SOAP interfaces. Sven -- Sven Van Caekenberghe Proudly supporting Pharo http://pharo.org http://association.pharo.org http://consortium.pharo.org

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Re: [Pharo-users] Fwd: [Pharo Consortium] Your organization application has been rejected.
by Joachim Tuchel March 3, 2015

March 3, 2015

Bad news. I am eager to hear if there is something to learn from their feedback. Now that both ESUG and Pharo have been rejected two years in a row, maybe it is time to think about ways to revive, or re-promote, the ESUG initiatives to sponsor student projects. Joachim Am 03.03.2015 08:59 schrieb Serge Stinckwich <serge.stinckwich(a)gmail.com>: > > Bad news from Google ... > We will ask some explanations with Uko. > > > ---------- Forwarded message ---------- > From:Â <no-reply(a)google-melange.appspotmail.com> > Date: Mon, Mar 2, 2015 at 7:56 PM > Subject: [Pharo Consortium] Your organization application has been rejected. > To: serge.stinckwich(a)gmail.com > > > Thank you for submitting Pharo Consortium's application to Google > Summer of Code 2015. Unfortunately, we were unable to accept your > organization's application at this time. Every year we receive many > more applications than we are able to accommodate, and we would > encourage you to reapply for future instances of the program. > > If you would like some general feedback on why your organization was > not accepted, please consider attending the IRC meeting in #gsoc on > Freenode on Friday, 6 March, 2015 at 16:00 UTC. Please note that the > feedback meeting will be limited to the first 50 organizations to > queue up (queuing in the channel will begin at 15:30 UTC). You are > also more than welcome to just email the OSPO team at > ospoteam(a)gmail.com directly for email feedback about your application > as well. > > Best regards, > > > -- > Serge Stinckwich > UCBN & UMI UMMISCO 209 (IRD/UPMC) > Every DSL ends up being Smalltalk > http://www.doesnotunderstand.org/ > >

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Fwd: [Pharo Consortium] Your organization application has been rejected.
by Serge Stinckwich March 3, 2015

March 3, 2015

Bad news from Google ... We will ask some explanations with Uko. ---------- Forwarded message ---------- From: <no-reply(a)google-melange.appspotmail.com> Date: Mon, Mar 2, 2015 at 7:56 PM Subject: [Pharo Consortium] Your organization application has been rejected. To: serge.stinckwich(a)gmail.com Thank you for submitting Pharo Consortium's application to Google Summer of Code 2015. Unfortunately, we were unable to accept your organization's application at this time. Every year we receive many more applications than we are able to accommodate, and we would encourage you to reapply for future instances of the program. If you would like some general feedback on why your organization was not accepted, please consider attending the IRC meeting in #gsoc on Freenode on Friday, 6 March, 2015 at 16:00 UTC. Please note that the feedback meeting will be limited to the first 50 organizations to queue up (queuing in the channel will begin at 15:30 UTC). You are also more than welcome to just email the OSPO team at ospoteam(a)gmail.com directly for email feedback about your application as well. Best regards, -- Serge Stinckwich UCBN & UMI UMMISCO 209 (IRD/UPMC) Every DSL ends up being Smalltalk http://www.doesnotunderstand.org/

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SQLite3 - External module not found
by Torsten Bergmann March 2, 2015

March 2, 2015

Hi Julien, there are two projects on my STHub account: SQlite and NBSQLite3to work with SQlite RDBMS. The first one is older and I would recommend to use NBSQLite3. I changed the page on STHub to make this more clear. Also http://smalltalkhub.com/#!/~PharoExtras/NBSQLite3 includes the docu already. I additionally made it more clear there that one should use the 32 bit version and added also Phils install instructions for CentOS. Thanks for pointing these out. It can save some pain for others. Bye Torsten

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Re: [Pharo-users] Zinc SSL Exception: decrypt failed code:5
by Sabine Manaa March 2, 2015

March 2, 2015

Hi Sven, Hi all, I try to send a curl command (which works at command line) from Pharo. I get the error: "SSL Exception: decrypt failed code:5" The working command line command is: curl -v -H 'Accept: application/json' -u 'aUser:aPassword' 'https://user.xxx.net/oauth/token?grant_type=client_credentials' the result is something like: {"access_token":"a31xxxa-2a22-4xx6c-938d-2bd3ae4a0629","token_type":"bearer","expires_in":42095,"scope":"write"} My current Pharo code is: | theZnClient | theZnClient := ZnClient new systemPolicy ; https; host: 'user.xxx.net'; path: 'oauth/token?grant_type=client_credentials'; username: 'aUser' password: 'aPassword'; accept: ZnMimeType applicationJson; get. theZnClient inspect close. 'aPassword' and 'aUser' and xxx.net was replaced by me for security reasons. In Pharo, I get a walkback with the error message 'SSL Exception: decrypt failed [code:-5]' But I see, that the ZdcSecureSocketStream has the correct result ({"access_token":...":"write"}) in its collection attribute at utf-8 string and at latin1-string so, the request is done and the result is available but then it fails here: ZdcSecureSocketStream(Object)>>error: ZdcSecureSocketStream>>sslException:code: ZdcSecureSocketStream>>fillBytes:startingAt:count: in Block: [ ... ZdcSecureSocketStream>>fillBytes:startingAt:count: ZdcSecureSocketStream(ZdcSimpleSocketStream)>>fillReadBufferNoWait ZdcSecureSocketStream(ZdcSimpleSocketStream)>>fillReadBuffer ZdcSecureSocketStream(ZdcOptimizedSocketStream)>>readInto:startingAt:count: ZnUTF8Encoder>>optimizedReadInto:startingAt:count:fromStream: ZnUTF8Encoder>>readInto:startingAt:count:fromStream: Sven, I could send you the 'aPassword' and 'aUser' and the url by private message. It would be fine if you could have a short look at it. Regards Sabine -- View this message in context: http://forum.world.st/Zinc-SSL-Exception-decrypt-failed-code-5-tp4808230p48… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

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