May 2013 - Pharo-users - lists.pharo.org

Class naming guide

by Bahman Movaqar

Hi all, I noticed that since there is no `import' statement in Pharo, class names can easily conflict. What is the common naming strategy that you people use to avoid that? TIA, -- Bahman Movaqar (http://BahmanM.com) ERP Evaluation, Implementation, Deployment Consultant

May 28, 2013

Re: [Pharo-users] PettitParser approach help

by Tudor Girba

Hi, I am not sure what you mean when you say an object that knows how to add to the result. Basically, you would need to build for each production the object and collect the meaningful ones in the outer scope. Here is something that would work for your example: a := 'AAA' asParser ==> [:token | #a]. b := 'BBB' asParser ==> [:token | #b]. c := 'CCC' asParser ==> [:token | #c]. meaningful := a / b / c. other := (meaningful / #newline asParser) negate star flatten. log := (meaningful / other) delimitedBy: #newline asParser. result := log end parse: 'AAA AAA BBB CCC AAA other text CCC BBB other text'. result select: #isSymbol I am CC-ing the moose mailing list because these questions tend to find better answers there. Cheers, Doru On May 27, 2013, at 11:07 PM, Juan Ignacio Vaccarezza <juanvaccarezza(a)gmail.com> wrote: > Hi all, > > First of all thanks for the amazing work and aswers to all. Having said that, the problem: > > I need to parse a log, a model that represents the lo is the following: > > ' > AAA > AAA > BBB > Line I don't care which can contain anything that is not AAA BBB or CCC > CCC > AAA > CCC > BBB > Line I don't care which can contain anything that is not AAA BBB or CCC > ' > > I manage to write the grammar which parses this, but then I would lilke to have all the log info digested on a result object which behaves something like this: > > resutlObject as size --> 3 > resultObject bs size --> 2 > restulIbject cs size -->2 > > The option that im using now is that individual parsers (meaning the parser for AAA,BBB,CCC,etc) actually retunrs an object that knows how to add themselves to the result and then, I iterate over the parser's array result asking to each object to add itself to the result. > > Is there a better solution? > > Thanks to all, > Juan. -- www.tudorgirba.com "It's not how it is, it is how we see it."

May 28, 2013

Re: [Pharo-users] String replacement

by S Krish

* Use the regex in Pharo too. Should be more than adequate for what you seek. * Create your string parsing code, in the lines of what Igor suggests, extending it for multiple line header fields * Use other libraries, like Zinc as Sven suggests, there are others similar in other packages, bit contrived and not really what you seek I presume. On Mon, May 27, 2013 at 10:12 PM, Thomas Worthington < thomas(a)technouveau.co.uk> wrote: > I've got a string which is the header section of an email. I have a regex > which will split a header field name from its data (ie, "From: > jim(a)null.com" becomes "From" and "jim(a)null.com") but some header lines are > long and have been continued by inserting a newline and one or more > spaces. Before splitting the fields I need to undo these continuations by > deleting these combinations of a newline followed by some whitespace. > > This would certainly be trivial in Perl or any of the normal Linux regex > engines but I've spent hours on this today, equipped with the PBE2 > chapter, and got nowhere. > > How do I do this in Pharo? > > Thanks, > > Thomas > >

May 28, 2013

PettitParser approach help

by Juan Ignacio Vaccarezza

Hi all, First of all thanks for the amazing work and aswers to all. Having said that, the problem: I need to parse a log, a model that represents the lo is the following: ' AAA AAA BBB Line I don't care which can contain anything that is not AAA BBB or CCC CCC AAA CCC BBB Line I don't care which can contain anything that is not AAA BBB or CCC ' I manage to write the grammar which parses this, but then I would lilke to have all the log info digested on a result object which behaves something like this: resutlObject as size --> 3 resultObject bs size --> 2 restulIbject cs size -->2 The option that im using now is that individual parsers (meaning the parser for AAA,BBB,CCC,etc) actually retunrs an object that knows how to add themselves to the result and then, I iterate over the parser's array result asking to each object to add itself to the result. Is there a better solution? Thanks to all, Juan.

May 27, 2013

Re: [Pharo-users] Gettext package for 2.0 - information not updated

by Usman Bhatti

On Mon, May 27, 2013 at 6:53 PM, stephane ducasse <stephane.ducasse(a)free.fr>wrote: > Usman there is a getText in the pharo repo on smalltalk but we have to > check its state. > It still has references to FileDirectory so I was thinking if its usable on 2.0. > > Stef > > On May 27, 2013, at 2:35 PM, Usman Bhatti <usman.bhatti(a)gmail.com> wrote: > > Hello, > > I am looking to see how localization works in Pharo. There is a pharo book > chapter that explains how to make it work but the chapter explains the > working on Pharo 1.4. > http://book.pharo-project.org/book/LanguageAndLibraries/Localisation > > Recent changes in STHub allow to load the package in Pharo 2.0 but I see a > lot of references to FileDirectory (deprecated in 2.0) and hence the > tutorial in the book does not work. > > The other package: System-Localization does not have much documentation so > that does not help either. > > Can someone point to a working tutorial for Pharo localization for 2.0? > > tx, > > Usman > > > >

May 27, 2013

Re: [Pharo-users] String replacement

by Sven Van Caekenberghe

Igor, I don't think that is what he wants. Thomas, You can use the build in ZnHeaders class from the Zinc HTTP Components library/framework: ZnHeaders readFrom: (String crlf join: 'Foo:1 Bar: foo- bar Final:true Foo: another-foo' lines) readStream. => a ZnHeaders('Bar'->'foo- bar' 'Final'->'true' 'Foo'->#('1' 'another-foo') ) Note that ZnHeaders>>#readFrom: expects CRLF delimited lines (line the whole of the internet), while Smalltalk uses CR's, hence the little hack. Your input will probably use CRLF. Note how ZnHeaders handles identical headers, while it joins the foo- and bar. HTH, Sven On 27 May 2013, at 18:52, Igor Stasenko <siguctua(a)gmail.com> wrote: > On 27 May 2013 18:42, Thomas Worthington <thomas(a)technouveau.co.uk> wrote: >> I've got a string which is the header section of an email. I have a regex >> which will split a header field name from its data (ie, "From: >> jim(a)null.com" becomes "From" and "jim(a)null.com") but some header lines are >> long and have been continued by inserting a newline and one or more >> spaces. Before splitting the fields I need to undo these continuations by >> deleting these combinations of a newline followed by some whitespace. >> >> This would certainly be trivial in Perl or any of the normal Linux regex >> engines but I've spent hours on this today, equipped with the PBE2 >> chapter, and got nowhere. >> >> How do I do this in Pharo? > > trimBlock := [:string | > | lines | > lines := string lines. > lines collect: #trimmed ]. > > trimBlock value: 'Header1: fooo > Header2: barrr > Header3: zork' > > => > #('Header1: fooo' 'Header2: barrr' 'Header3: zork') > >> >> Thanks, >> >> Thomas >> > > > > -- > Best regards, > Igor Stasenko. >

May 27, 2013

Re: [Pharo-users] Gettext package for 2.0 - information not updated

by stephane ducasse

Usman there is a getText in the pharo repo on smalltalk but we have to check its state. Stef On May 27, 2013, at 2:35 PM, Usman Bhatti <usman.bhatti(a)gmail.com> wrote: > Hello, > > I am looking to see how localization works in Pharo. There is a pharo book chapter that explains how to make it work but the chapter explains the working on Pharo 1.4. > http://book.pharo-project.org/book/LanguageAndLibraries/Localisation > > Recent changes in STHub allow to load the package in Pharo 2.0 but I see a lot of references to FileDirectory (deprecated in 2.0) and hence the tutorial in the book does not work. > > The other package: System-Localization does not have much documentation so that does not help either. > > Can someone point to a working tutorial for Pharo localization for 2.0? > > tx, > > Usman > >

May 27, 2013

Re: [Pharo-users] String replacement

by Igor Stasenko

On 27 May 2013 18:42, Thomas Worthington <thomas(a)technouveau.co.uk> wrote: > I've got a string which is the header section of an email. I have a regex > which will split a header field name from its data (ie, "From: > jim(a)null.com" becomes "From" and "jim(a)null.com") but some header lines are > long and have been continued by inserting a newline and one or more > spaces. Before splitting the fields I need to undo these continuations by > deleting these combinations of a newline followed by some whitespace. > > This would certainly be trivial in Perl or any of the normal Linux regex > engines but I've spent hours on this today, equipped with the PBE2 > chapter, and got nowhere. > > How do I do this in Pharo? trimBlock := [:string | | lines | lines := string lines. lines collect: #trimmed ]. trimBlock value: 'Header1: fooo Header2: barrr Header3: zork' => #('Header1: fooo' 'Header2: barrr' 'Header3: zork') > > Thanks, > > Thomas > -- Best regards, Igor Stasenko.

May 27, 2013

Re: [Pharo-users] ORM with PostgreSQL support

by stephane ducasse

> Hi all, > > I'm completely new to Smalltalk world so please bear with me. Welcome :) do not hesitate to ask any questions and problems you face. learning alone smalltalk is not necessarily trivial. > Coming from the Java world, I'm used to using an ORM when developing a > database-backed application. What are the options in the Smalltalk > world? I'm specially looking for something that supports PostgreSQL as > that's what I 99.99% of the time use :-) You have DBXTalk, for no-sql you have mongoTalk, riak support. > Would you please give me some pointers along with links to the > documentations? > > TIA, > > -- > Bahman Movaqar (http://BahmanM.com) > ERP Evaluation, Implementation, Deployment Consultant >

May 27, 2013

String replacement

by Thomas Worthington

I've got a string which is the header section of an email. I have a regex which will split a header field name from its data (ie, "From: jim(a)null.com" becomes "From" and "jim(a)null.com") but some header lines are long and have been continued by inserting a newline and one or more spaces. Before splitting the fields I need to undo these continuations by deleting these combinations of a newline followed by some whitespace. This would certainly be trivial in Perl or any of the normal Linux regex engines but I've spent hours on this today, equipped with the PBE2 chapter, and got nowhere. How do I do this in Pharo? Thanks, Thomas

May 27, 2013