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

Re: [Pharo-project] A facility to launch external processes from Pharo should be provided by default on all platforms

by StÃ©phane Ducasse

Thanks gabriel. Your mail is important because we should get much much better on that site so please push. We are working (but nothing is ready for public or even private try) on making sure that we can use pharo as a scripting language and the connection with the OS is important. I really think that we should get much better. I hope that the VM will improve from that part. We are really busy from the image side.... If more people would help we could do so much more exciting things. Stef On Jul 19, 2010, at 9:20 PM, Gabriel Cuvillier wrote: > > Hello everyone, > > I've read several threads about people having problems to launch external processes from Pharo. > > The solutions are well known: either by using ProcessWrapper, or by using the plugin OSProcess. But the former is Win32 only, and the latter is supposedly cross platform, but is only included by default on Linux and OS X... On Win32, the plugin must be built by hand with the Squeak VM. > > For the average user, this is a little bit puzzling. Unless things operates in a closed sandbox (no files, no sockets, ...), such basic operation should be included by default and usable in a cross platform way (even if we are living in an image, no?). > > For example, here is my use case: I have several command line tools to automate tasks on my machine. I intended to learn Pharo/Smalltalk by building a graphical front-end to these tools (with Morphic) as well as a Web front-end (with Seaside). But the "system()" message is missing :) > > Gabriel. > > Note: Maybe it is more a SqueakVM issue. If so, I will post my request on that mailing list. > > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project

July 19, 2010

Re: [Pharo-project] XML Demarshalling (Hern?n Morales Durand)

by Norbert Hartl

On 19.07.2010, at 16:33, Alexandre Bergel wrote: >> There were no string-symbol comparison in the code I checked. The parser converted all tagnames to symbols and the queries expected symbol arguments, so symbols were compared with symbols. The problem with this approach is that the symbol table is spammed with all the tags found in the xml document and parsing is slower. The queries are faster of course (if no namespaces are involved). >> Btw is the package ment to be cross-dialect? > > Not that I am aware of. Maybe Dale ported it to Gemstone, but I am not sure. > I did it. But the last version I ported is probably two month old. I'll (or someone else) pick up the newest versions and bring to gemstone. We discussed the whole symbol thing because in gemstone #test = 'test' is false and so we had to tweak some things. I hope the latest version in ConfigurationOfXMLSupport for gemstone is still right. I can provide more details if needed. Norbert

July 19, 2010

[Pharo-project] A facility to launch external processes from Pharo should be provided by default on all platforms

by Gabriel Cuvillier

Hello everyone, I've read several threads about people having problems to launch external processes from Pharo. The solutions are well known: either by using ProcessWrapper, or by using the plugin OSProcess. But the former is Win32 only, and the latter is supposedly cross platform, but is only included by default on Linux and OS X... On Win32, the plugin must be built by hand with the Squeak VM. For the average user, this is a little bit puzzling. Unless things operates in a closed sandbox (no files, no sockets, ...), such basic operation should be included by default and usable in a cross platform way (even if we are living in an image, no?). For example, here is my use case: I have several command line tools to automate tasks on my machine. I intended to learn Pharo/Smalltalk by building a graphical front-end to these tools (with Morphic) as well as a Web front-end (with Seaside). But the "system()" message is missing :) Gabriel. Note: Maybe it is more a SqueakVM issue. If so, I will post my request on that mailing list.

July 19, 2010

Re: [Pharo-project] Cleaning morphic - Step 1 - About "Morphic-Ballon" and the Ballon category

by StÃ©phane Ducasse

Hi guile here are some ideas to clean morphic - looking at etoy left over externalName and others checking extension - make sure that drawing a button does not require to check that the label is a Morph kind of behavior We should make sure that a label is always an object that have the right properties - cleaning borderstyle and friends. - making sure that there are examples - making sure that the comments are up to date - commenting classes - an important task is to make sure that we could use NewTextMorph and SmalltalkEditor On Jul 16, 2010, at 1:18 AM, Guillermo Polito wrote: > Hi! > > Does anyone know what the Ballon category and its related morphs are for? Someone uses it? Is it useful in the Core of pharo? > > Did Someone try previously to remove it and failed? why? > > thanks in advance :) > Guille > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project

July 19, 2010

Re: [Pharo-project] XML Demarshalling

by Norbert Hartl

On 16.07.2010, at 18:46, Larry Gadallah wrote: > Hi all: > > I am a noob searching for an example of how to demarshall a set of > simple and complex XML nodes into an object using Pastell or something > similar. I have found many examples of how to pick out all of the > elements of a certain type into a collection, but I'm trying to grab > the data from a mixed collection of (~20) elements that are children > of a particular element type and unpack them into an object. > > Does anyone know of some good examples of how to do this using Pastell > or something similar? > Can you give more detailled information about how the XML maps onto the data model? I mean if you have childr elements will that map to objects that are referenced similar? Do attributes map to variables and such? Or do you want to freely define how the structure of the XML resembles into your objects? Norbert

July 19, 2010

Re: [Pharo-project] pharo website - screencasts

by StÃ©phane Ducasse

good initiative May be you should say more screencasts at: ... On Jul 19, 2010, at 8:55 PM, laurent laffont wrote: > Hi, > > I've added a "screencast wall" at http://pharo-project.org/documentation/screencasts > > I've tried to put those which best show Pharo for newcommers, feedback welcome. > > Cheers, > > Laurent Laffont > > http://pharocasts.blogspot.com/ > http://magaloma.blogspot.com/ > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project

July 19, 2010

Re: [Pharo-project] connection to access databases

by StÃ©phane Ducasse

Thanks eliot. Who is maintaining ODBC? to commit the changes? On Jul 19, 2010, at 7:39 PM, Eliot Miranda wrote: > moduleName > "Return the name of the module for this library" > Smalltalk platformName = 'Win32' ifTrue:[^'odbc32']. > Smalltalk platformName = 'unix' ifTrue:[^ 'libodbc.so']. > Smalltalk platformName = 'Mac OS' ifTrue:[^ 'libiodbc.dylib']. > ^self error: 'Don''t know the ODBC library name' > > works for me. Find attached. > > On Mon, Jul 19, 2010 at 1:41 AM, Tudor Girba <tudor.girba(a)gmail.com> wrote: > Hi, > > Thanks for all the pointers. I am now testing on Mac using the Actual driver: > http://www.actualtech.com/product_access.php > > I managed to get it running, but now I have problems with the ODBC Pharo implementation because there seems to be no module for Mac: > > ODBCLibrary class>>moduleName > "Return the name of the module for this library" > SmalltalkImage current platformName = 'Win32' ifTrue: [ ^ 'odbc32' ]. > SmalltalkImage current platformName = 'unix' ifTrue: [ ^ 'libodbc.so' ]. > ^ self error: 'Don''t know the ODBC library name' > > Is there something to be done in this area? > > Cheers, > Doru > > > On 19 Jul 2010, at 01:04, GermÃ¡n Arduino wrote: > > Yes, Indeed, I mean, I used a driver to access, but can't remember now > the brand, but I'm sure I not payed for it :) > > May be I used some trial version.... > > 2010/7/18 Levente Uzonyi <leves(a)elte.hu>: > > On Sun, 18 Jul 2010, GermÃ¡n Arduino wrote: > > Not, I'm not talking of propietary software. > > I'm talking of one I used when helped Diego with the testing of the > odbc package. Don't remember now, but may be this > http://www.unixodbc.org/ ? > > ODBC is just an API, if you don't have a driver for yourdatabase, then it > won't help. > > > Levente > > > About Mac, sorry, never touched a mac in all my life.... > > Cheers. > > > 2010/7/18 Levente Uzonyi <leves(a)elte.hu>: > > On Sun, 18 Jul 2010, GermÃ¡n Arduino wrote: > > Hi Tudor: > > Is as Levente says, you must define an ODBC source on a Windows PC > (Alternatively on Unix you can use ODBC also). > > I don't know any free ODBC drivers for Access on un*x. I only know a > driver > which costs 4-5 times more than the windows OS itself :). But > there's a driver for mac which costs only 30 usd if you're interested. > > > Levente > > > Some examples on: http://wiki.squeak.org/squeak/2480 > > Cheers. > GermÃ¡n. > > > 2010/7/18 Levente Uzonyi <leves(a)elte.hu>: > > On Sun, 18 Jul 2010, Tudor Girba wrote: > > Thanks Mariano! > > Indeed, if I load ConfigurationOfFFI first, everything loads well. > > I am a complete newbie in this area. Can anyone tell me what I should > do > next? > > I imagine that I should connect to an Access server. If yes, how would > I > do that? > > Also, do I need anything else, like a C plugin/library to get the C > calls > from ODBCLibrary going? > > First you'll need a pc running windows. Then you have to create an ODBC > Data > Source for your Access file. Then you'll be able to create a connection > to > that datasource from your image. > > > Levente > > > Cheers, > Doru > > > On 18 Jul 2010, at 09:17, Mariano Martinez Peck wrote: > > > > On Sun, Jul 18, 2010 at 8:49 AM, Tudor Girba <tudor.girba(a)gmail.com> > wrote: > Hi, > > I tried loading it, but I get : > "This package depends on the following classes: > ExternalLibrary > ExternalStructure" > > Can anyone tell me where to find these from? > > This means that you need Metacello ;) > > Those classes are from FFI, a pre-requisite for ODBC to work. > Maybe there is a ConfigurationOfODBC somewhere... > > For the moment, I recommend you to install FFI using the > ConfigurationOfFFI. > > Cheers > > Mariano > > > Also, are there eternal prerequisites to work with ODBC? > > Cheers, > Doru > > > > On 18 Jul 2010, at 00:35, Levente Uzonyi wrote: > > On Sat, 17 Jul 2010, Tudor Girba wrote: > > Hi, > > Is there a way to connect to a Microsoft Access database from Pharo? > > Yes, with ODBC. > > > Levente > > > I have an mdb file of 300 Mb that I would need to analyze. > > Cheers, > Doru > > > -- > www.tudorgirba.com > > "Next time you see your life passing by, say 'hi' and get to know > her." > > > > > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > > -- > www.tudorgirba.com > > "Speaking louder won't make the point worthier." > > > > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > > -- > www.tudorgirba.com > > "When people care, great things can happen." > > > > > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > > > > > -- > ================================================= > GermÃ¡n S. Arduino <gsa @ arsol.net> Twitter: garduino > Arduino Software & Web Hosting http://www.arduinosoftware.com > PasswordsPro http://www.passwordspro.com > ================================================= > > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > > -- > www.tudorgirba.com > > "Every thing should have the right to be different." > > > > > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > > <ODBCLibrary class-moduleName.st>_______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project

July 19, 2010

Re: [Pharo-project] Cleaning morphic - Step 1 - About "Morphic-Ballon" and the Ballon category

by Guillermo Polito

HAhah, thanks :). Anyway, my idea is not to remove those packages. I want to put them in separate monticello packages, so we don't need have it in the core if we don't use it. So, I download Seaside, Moose, and what else? 2010/7/19 Mariano Martinez Peck <marianopeck(a)gmail.com> > Guille: one thing you can do before removing the code, is to prepare an DEV > image with Seaside, Moose and all those big projects. So that when you > search senders/references you can do it also there. I don't mean that we > shouldn't remove them if they are used in those projects, but just to be > aware. > > but for "coding" and commiting, yes, use latest PharoCore, not dev. > > And yes, if you don't receive feedback, go ahead! > > Cheers > > Mariano > > 2010/7/19 Guillermo Polito <guillermopolito(a)gmail.com> > >> Ok, I opened an Issue for this... >> >> http://code.google.com/p/pharo/issues/detail?id=2696 >> >> >> On Thu, Jul 15, 2010 at 8:18 PM, Guillermo Polito < >> guillermopolito(a)gmail.com> wrote: >> >>> Hi! >>> >>> Does anyone know what the Ballon category and its related morphs are >>> for? Someone uses it? Is it useful in the Core of pharo? >>> >>> Did Someone try previously to remove it and failed? why? >>> >>> thanks in advance :) >>> Guille >>> >> >> >> _______________________________________________ >> Pharo-project mailing list >> Pharo-project(a)lists.gforge.inria.fr >> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >> > > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >

July 19, 2010

[Pharo-project] pharo website - screencasts

by laurent laffont

Hi, I've added a "screencast wall" at http://pharo-project.org/documentation/screencasts I've tried to put those which best show Pharo for newcommers, feedback welcome. Cheers, Laurent Laffont http://pharocasts.blogspot.com/ http://magaloma.blogspot.com/

July 19, 2010

Re: [Pharo-project] Markup Builder in Smalltalk (XMLWriter)

by Norbert Hartl

On 06.07.2010, at 23:04, jaayer wrote: > > > ---- On Tue, 06 Jul 2010 03:19:48 -0700 Torsten Bergmann wrote ---- > >> Just check "XMLWriter-tbn.5" which can be found in "http://squeaksource.com/PharoGoodies/" >> >> ------------------------------------------------------ >> |writer| >> writer := XMLTagWriter xml. >> writer comment: 'A new xml file'. >> writer tag: 'package' with: [ >> writer cData: 'name' with: 'XMLWriter'. >> ]. >> writer contents >> >> returns >> >> >> >> >> >> >> ------------------------------------------------------ >> >> You can also access the stream (writer stream). >> Indenting is not yet working fully but at least >> it should give you idea. Check out the test cases for >> more. >> >> I once saw such an XMLWriter written by Ernest Micklei >> in VAST (credits for the idea) and rebuilt it in Pharo. >> >> Bye >> T. >> -- >> GMX DSL: Internet-, Telefon- und Handy-Flat ab 19,99 EUR/mtl. >> Bis zu 150 EUR Startguthaben inklusive! http://portal.gmx.net/de/go/dsl >> >> _______________________________________________ >> Pharo-project mailing list >> Pharo-project(a)lists.gforge.inria.fr >> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >> > > The next version of XMLSupport will feature an XMLWriter with an API similar to XMLTagWriter. I had decided a few weeks that any API using explicit start/end methods was unsmalltalk-like and should be replaced with one based on execute-around methods, though I was unaware of XMLTagWriter and instead modeled the API loosely on Seaside's HTML generation. You now send XMLWriter messages that create markup-writing objects for the parts of a document. These objects can then be configured using messages like #attributeAt:put: and written to the document explicitly with a serialization message (which typically accepts content) or implicitly by creating another markup writer after it. The new API looks like this: > > | writer | > ((writer := XMLWriter new) > enablePrettyPrinting; > xmlDeclaration; > tag: 'foo') > xmlnsAt: 'foo' put: 'http://foo'; > attributeAt: 'a' put: 'one'; > attributeAt: 'b' put: 'two'; > content: [ > writer tag: 'bar' content: [ > (writer > string: 'test'; > tag: 'baz'; > tag: 'foobar') > content: 'test']] > which produces: > <?xml version="1.0" encoding="UTF-8"?> > <foo xmlns:foo="http://foo" a="one" b="two"> > <bar>test<baz /> > <foobar>test</foobar> > </bar> > </foo> > Could you elaborate on the usage of xmlns? The one you defined does nothing. The foo in the xml is just the element name. I would like to know - how to define a namespace prefix for an element - how to define a default namespace for an element I think I need another look in the xml parser since last time :) Thanks for putting effort into xml parser. Is there a pull parser available or planned? thanks, Norbert

July 19, 2010