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

Re: [Pharo-users] Metacello

by Ben Coman

On Thu, Jun 23, 2016 at 5:25 PM, Valentin Ryckewaert < valentin.ryckewaert(a)gmail.com> wrote: > Hello everyone, > > I'm currently using Metacello to download my project on a new image very > regularly and i'm having some trouble with this message : > > You are about to load new versions of the following packages that have > unsaved changes in the image: > System-SessionManager > If you continue, you will lose these changes: > Load Merge Cancel > > I searched for something to prevent it but didn't find it, does someone > know how I could automaticly do Load in these cases please? > > I don't know the answer to your question, but to find out I would use Tools > Finder > Source to search for "you will lose these changes", put a haltonce in front of it and trace back through the debugger to look for WhatError was raised so that in the playground I could do [ Metacello doStuff ] on: WhatError do: []. Now a random idea, it would be interesting if *all* dialogs raised a notification "Dialog" so you could wrap any expression as... [ Metacello doStuff ] on: Dialog forTextLike: '*you will lose these changes*' answer: #Load. (or a vaguely remember there is something similar already??) cheers -ben

June 23, 2016

Metacello

by Valentin Ryckewaert

Hello everyone, I'm currently using Metacello to download my project on a new image very regularly and i'm having some trouble with this message : You are about to load new versions of the following packages that have unsaved changes in the image: System-SessionManager If you continue, you will lose these changes: Load Merge Cancel I searched for something to prevent it but didn't find it, does someone know how I could automaticly do Load in these cases please? Valentin

June 23, 2016

Re: [Pharo-users] File Policy

by tesonep＠gmail.com

I think that using the stdout / stderr should be the way. It's the standard and expected way to behave. Even though, I recommend you to perform a little test to see how the output is generated in the terminal, if everything is mixed up or it is quite long, maybe generating a file is not as bad idea, it will improve the way Pharo can be used by the command line. Other tools have different logging levels or even options to send the logging to a file. But that maybe is asking too much for a first version. On Wed, Jun 22, 2016 at 2:12 PM, Christophe Demarey < christophe.demarey(a)inria.fr> wrote: > > > Le 22 juin 2016 Ã 14:05, Valentin Ryckewaert < > valentin.ryckewaert(a)gmail.com> a Ã©crit : > > > > Hello everyone, > > > > i'm currently working on making Pharo able to manage if it writes on his > files.I created a class which can define it, then I'm already able, for > example, to define if Pharo writes on pharo.changes or not. > > > > The meaning of this is to make Pharo able to execute a script but > without being modified by it, a script shouldn't let any trace of its > execution on the image or on Pharo files. > > > > My problem concern PharoDebug.log, I would like to know what you prefer > Pharo to do with it in the case we configured it to not write on his files > (changes, source,image....). > > Should Pharo writes the logs in the terminal ? in a tmp file ? or just > in PharoDebug.log ? > > If you want to use Pharo as a script interpreter, then just do like other > interpreter: report results and errors on stdout / stderr. > Then, you can redirect the output to also have it in a file if you want. I > would not use PharoDebug.log or any other file. > > Christophe > > > -- Pablo Tesone. tesonep(a)gmail.com

June 23, 2016

Re: [Pharo-users] How can an image know it is running headless?

by Valentin Ryckewaert

Sven is right, is Headless works well :) 2016-06-23 0:25 GMT+02:00 Sven Van Caekenberghe <sven(a)stfx.eu>: > SmalltalkImage>>#isHeadless ? > > > On 22 Jun 2016, at 23:57, Johan Fabry <jfabry(a)dcc.uchile.cl> wrote: > > > > Hi all, > > > > I would like to know how to know if the image is running in headless > mode. Is there an expression I can run in my code to establish that? > > > > TIA, > > > > -- > > Does this mail seem too brief? Sorry for that, I donât mean to be rude! > Please see http://emailcharter.org . > > > > Johan Fabry - http://pleiad.cl/~jfabry > > PLEIAD and RyCh labs - Computer Science Department (DCC) - > University of Chile > > > > > > >

June 23, 2016

Xtreams: Debugging Grammars

by Sean P. DeNigris

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.

June 23, 2016

Xtreams: Extending Bootstrap

by Sean P. DeNigris

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.

June 22, 2016

Re: [Pharo-users] How can an image know it is running headless?

by Sven Van Caekenberghe

SmalltalkImage>>#isHeadless ? > On 22 Jun 2016, at 23:57, Johan Fabry <jfabry(a)dcc.uchile.cl> wrote: > > Hi all, > > I would like to know how to know if the image is running in headless mode. Is there an expression I can run in my code to establish that? > > TIA, > > -- > Does this mail seem too brief? Sorry for that, I donât mean to be rude! Please see http://emailcharter.org . > > Johan Fabry - http://pleiad.cl/~jfabry > PLEIAD and RyCh labs - Computer Science Department (DCC) - University of Chile > >

June 22, 2016

Re: [Pharo-users] How can an image know it is running headless?

by Henrik Nergaard

MessageBrowser browse: ( (Symbol selectorTable select: [ :s | s includesSubstring: #headless caseSensitive: false ] ) flatCollect: [ :s | s implementors ] as: OrderedCollection ). Best regards, Henrik -----Original Message----- From: Pharo-users [mailto:pharo-users-bounces@lists.pharo.org] On Behalf Of Johan Fabry Sent: Wednesday, June 22, 2016 11:57 PM To: Pharo is welcome <pharo-users(a)lists.pharo.org> Subject: [Pharo-users] How can an image know it is running headless? Hi all, I would like to know how to know if the image is running in headless mode. Is there an expression I can run in my code to establish that? TIA, -- Does this mail seem too brief? Sorry for that, I donât mean to be rude! Please see http://emailcharter.org . Johan Fabry - http://pleiad.cl/~jfabry PLEIAD and RyCh labs - Computer Science Department (DCC) - University of Chile

June 22, 2016

How can an image know it is running headless?

by Johan Fabry

Hi all, I would like to know how to know if the image is running in headless mode. Is there an expression I can run in my code to establish that? TIA, -- Does this mail seem too brief? Sorry for that, I donât mean to be rude! Please see http://emailcharter.org . Johan Fabry - http://pleiad.cl/~jfabry PLEIAD and RyCh labs - Computer Science Department (DCC) - University of Chile

June 22, 2016

Re: [Pharo-users] Styling a Pharo UI application

by Dimitris Chloupis

Documentation is always a problem. I dont use Spec because I dont like it , but I use Morphic for my project ChronosManager. I do some "styling" for example use different fonts for different labels , different sizes , I format strings to time stamps and even offer easy ways for user to change them without modifying the whole string. You can do a lot with Morphic, though I have not played with layout stuff since this GUI is static and image (PNGs) based but yeah Morphic can do that as well. My project is on Catalog browser and it has class comments , dont know if this exactly what you want but it may be a good start. Obviously there are a ton of things you can do with a web page that Morphic will not offer you out of the box. You can use Html as the front end / GUI and keep Pharo as the backend, thats how most web apps made with Pharo work. This you get the full power of Html/JS and Pharo. Seaside has classes that map html to pharo methods so you dont have to write html and js, and also I remember a pharo library dealing with CSS. Another option is to use a GUI API like QT , I have tried this with my python bridge and it works at least on a very basic level, again similar recipe to the above solution. But yeah if you are not too demanding I think Morphic will serve you well. Personally I only like Morphic , its the only GUI API that does not kill my inner child. On Wed, Jun 22, 2016 at 5:44 PM Tommaso Dal Sasso < tommaso.dalsasso(a)gmail.com> wrote: > Hello everybody, > > I have a question about the UI toolkits available for Pharo. I already > asked something about this on Slack, but since I saw that there was a > recent discussion about UI in the mailing list, I think this is a better > place to discuss the matter. > > I am writing an application for Pharo where I am displaying some > structured text. The structure is similar to the one of a web page: A > main title with a list of paragraphs, where each paragraph has a title > and a description. > > What I would like to do is to format the text to present the contents in > a meaningful way: For example, I would like a bigger font for the title, > and change the background of the text, to give a better separation > between the paragraphs. Basically I would like to manipulate and display > my contents as I would do in a web page. > > To write UI widgets I usually use Spec, but I found that going beyond > easy formatting (e.g. bold text and emphasis) is harder than I thought. > I saw there were discussion about the styling text and the role of the > theme class, using TextStyle but that part is not really documented. > > So far, the easiest way to solve my problem seems to be to use Morphic > to display the contents as I want it, and then include my widget in my > spec application. > > Do you have any suggestions about how to do that? I think that styling > the UI widgets is an important part of the application development, but > it is really hard to find documentation about this. > > Thanks, have a nice day! > Tommaso > > >

June 22, 2016