December 2015 - Pharo-dev - lists.pharo.org

[SecureSession] version 74 is out with compression enabled

by Robert Withers

Check it in the crypto repo. Next up? refactor over to new frames. On deck? ReedSolomon -- . .. ... ^,^ robert Go Panthers!

Dec. 23, 2015

Re: [Pharo-dev] Can I access symbolic constants from NB FFI?

by Mariano Martinez Peck

On Tue, Dec 22, 2015 at 5:50 PM, tesonep(a)gmail.com <tesonep(a)gmail.com> wrote: > Hi Mariano, > it is supossed to be Posix, but Posix.1, it's another revision. > > Since Solaris 10, it is supposed to supports all extensions of Posix ( > http://docs.oracle.com/cd/E19253-01/816-5175/standards-5/index.html) and > Irix 6 (is discontinued, and is not Posix.1 compatible) > > Also I can say that the GHC (Haskell) implementation assumes the value 1 > for the constant, you can check the source code in: > > > https://hackage.haskell.org/package/posix-waitpid-0.1/docs/src/System-Posix… > > I think is enough safe to have the 1 as a constant, if not you will have > to generate a plugin for every platform. > > Thanks Pablito. I assumed 1 for now and in fact it did work for OSX at least :) > The other alternative is to read the constant value from the C Header, but > is maybe an overkill. > > Yes, I thought the same...but I would need the sources... > Chers, > > Pd: hace rato que estoy por aca, pero me cuesta responder, a veces va muy > rapido y otras vuelan muy alto :). > > jajajajaj groso > On Tue, Dec 22, 2015 at 5:36 PM, Mariano Martinez Peck < > marianopeck(a)gmail.com> wrote: > >> >> >> On Tue, Dec 22, 2015 at 5:24 PM, tesonep(a)gmail.com <tesonep(a)gmail.com> >> wrote: >> >>> Hello Mariano, >>> WNOHANG is a constant is defined in sys/wait.h, after the >>> compilation is not included in the object file. >>> >>> You will have to duplicate its value in the Smalltalk Code. It's value >>> is 1, in linux is defined in bits/waitflags.h as >>> >>> #define WNOHANG 1 >>> >>> >> mmmmmm but then I would need to take care about its different values in >> different OS right? >> I am reading for example this thread: >> https://groups.google.com/forum/#!topic/comp.lang.python/_5rCpfYR_ZE >> >> sunos 4.1.3 : #define WNOHANG 1 >> Solaris 2.4 : #define WNOHANG 0100 >> OSF1 2.0 : #define WNOHANG 0x1 >> Ultrix 4.4 : #define WNOHANG 1 >> irix 4.0.5C : #define WNOHANG 0x1 >> irix 5.2 : #define WNOHANG 0100 >> irix 6.0.1 : #define WNOHANG 0100 >> >> OK..the thread is from 1995... I thought the POSIX standard would >> standardize that... >> >> I am now checking at >> /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/usr/include/sys/wait.h >> >> and it says: >> >> #define WNOHANG 0x00000001 >> But again..I wonder how portable is to stick to that... >> >> Ok...maybe I will need to go with a VM primitive as #primGetChildExitStatus: >> that way I can do the: >> >> self cCode: 'waitpid ( pidToHandle, &exitStatus, WNOHANG )' inSmalltalk: >> [ exitStatus := -1 ]. >> >> >> pd: que groso Pablito verte por aca!!!! >> >> >> >>> Cheers, >>> Pablo >>> >>> On Tue, Dec 22, 2015 at 5:12 PM, Mariano Martinez Peck < >>> marianopeck(a)gmail.com> wrote: >>> >>>> Hi guys, >>>> >>>> Say I want to call to waitpid like this: >>>> >>>> waitpid(childID, &status, WNOHANG); >>>> >>>> How can I do since I don't have access to WNOHANG int value in order to >>>> send it via argument .... ??? >>>> >>>> Any idea? >>>> >>>> Thanks in advance, >>>> >>>> -- >>>> Mariano >>>> http://marianopeck.wordpress.com >>>> >>> >>> >>> >>> -- >>> Pablo Tesone. >>> tesonep(a)gmail.com >>> >> >> >> >> -- >> Mariano >> http://marianopeck.wordpress.com >> > > > > -- > Pablo Tesone. > tesonep(a)gmail.com > -- Mariano http://marianopeck.wordpress.com

Dec. 23, 2015

Re: [Pharo-dev] [Pharo-users] NeoJSON: parsing mapped nil fields

by Sven Van Caekenberghe

Hi, > On 22 Dec 2015, at 17:40, Skip Lentz <skip.lentz(a)inria.fr> wrote: > > Hi all, > > When parsing with NeoJSON, Iâm experiencing some problems. > > If I parse a JSON representation using NeoJSONReader>>next (i.e. not according to a schema), it parses nil fields just fine. > But when I explicitly set a value schema, it wonât parse it in the case it is nil (or ânullâ in JSON). Is there a way to let it return nil in the case the parser encounters ânullâ, and otherwise serialize it as a value schema (e.g. a Point class). > > Taking the example from the paper (https://github.com/svenvc/docs/blob/master/neo/neo-json-paper.md) > (NeoJSONReader on: ânull' readStream) > mapInstVarsFor: Point; > nextAs: Point. > > Is there a way to adapt the above snippet so that it evaluates to ânilâ instead of resulting in an error? I ask because I am parsing an API response which sometimes contains a ânullâ field, and sometimes a JSON object for that field. > > Thanks. NeoJSON does have a bit of a split personality. When using #next it parses whatever is there and returns it as either primitives, a map or a list, nested to any depth. When you use mappings and #nextAs: it tries to map a static type structure on what is coming in. As such it is not really prepared for dynamic surprises like objects being replaced by null. Do also note that the typing info is totally absent from the JSON itself, unlike STON for example. NeoJSON also tries (and succeeds) in maintaining a stream based parser that does not generate intermediate structures except your own domain models. But your request does make sense and I will think about it. It might be possible. It has been a while that I really thought about the implementation. Sven

Dec. 22, 2015

Re: [Pharo-dev] How to create a 16x16 icon from a .png file?

by Alexandre Bergel

Peter, I have updated the help based on your icon factory. Your code is very easy to use, and it is available from the catalog. Pretty cool! https://pharo.fogbugz.com/f/cases/17291/The-ImportingResourceHelp-has-to-be… The monkey will go over it soon I guess. In case you wish to improve it, it would be great to have a resize function :-) Cheers, Alexandre > On Dec 22, 2015, at 12:01 PM, Peter UhnÃ¡k <i.uhnak(a)gmail.com> wrote: > > Look at IconFactory http://smalltalkhub.com/#!/~peteruhnak/IconFactory > > On Tue, Dec 22, 2015 at 2:11 PM, Alexandre Bergel > <alexandre.bergel(a)me.com> wrote: >> Hi! >> >> A couple of month ago the following expression was working: >> ThemeIcons new createIconMethodsFromFile: 'cube' directory: '/Users/alexandrebergel/Desktop/cubeâ >> >> Now it does not. How can I import .png files in Pharo? >> >> Cheers, >> Alexandre >> -- >> _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: >> Alexandre Bergel http://www.bergel.eu >> ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. >> >> >> >> > -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

Dec. 22, 2015

Re: [Pharo-dev] How to create a 16x16 icon from a .png file?

by Alexandre Bergel

Ah yes! Thanks! Alexandre > On Dec 22, 2015, at 12:01 PM, Peter UhnÃ¡k <i.uhnak(a)gmail.com> wrote: > > Look at IconFactory http://smalltalkhub.com/#!/~peteruhnak/IconFactory > > On Tue, Dec 22, 2015 at 2:11 PM, Alexandre Bergel > <alexandre.bergel(a)me.com> wrote: >> Hi! >> >> A couple of month ago the following expression was working: >> ThemeIcons new createIconMethodsFromFile: 'cube' directory: '/Users/alexandrebergel/Desktop/cubeâ >> >> Now it does not. How can I import .png files in Pharo? >> >> Cheers, >> Alexandre >> -- >> _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: >> Alexandre Bergel http://www.bergel.eu >> ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. >> >> >> >> > -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

Dec. 22, 2015

Re: [Pharo-dev] How to create a 16x16 icon from a .png file?

by Alexandre Bergel

Exactly! > On Dec 22, 2015, at 4:46 PM, Dimitris Chloupis <kilon.alios(a)gmail.com> wrote: > > please note that its not required to covnert a png to a method source if you use git because git can handle versioning binary files just fine. All you have to do is access your local github-cache and retrieve the image from there (assuming the image has been added to your github repository). > > From there one is just a matter of using Form fromFileNamed: aStringPathToYourPNG > > if you dont use git, use Peter's IconFactory. > > On Tue, Dec 22, 2015 at 3:12 PM Alexandre Bergel <alexandre.bergel(a)me.com> wrote: > Hi! > > A couple of month ago the following expression was working: > ThemeIcons new createIconMethodsFromFile: 'cube' directory: '/Users/alexandrebergel/Desktop/cubeâ > > Now it does not. How can I import .png files in Pharo? > > Cheers, > Alexandre > -- > _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: > Alexandre Bergel http://www.bergel.eu > ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. > > > > -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.

Dec. 22, 2015

Re: [Pharo-dev] Can I access symbolic constants from NB FFI?

by Esteban Lorenzano

as Pablo says, you ask too much :) basically, thatâs a macro who is replaced by the C preprocessor, even before compiling it. So no, you cannot access it because it does not exist :) the âofficialâ recommendation for this is: Do a SharedPool. Also there is TalkFFI (look for it in sthub, my internet connection here is too slow and I cannot enter it). I do not think it will work out of the box but basically, it imports header files :) cheers, Esteban > On 22 Dec 2015, at 20:24, tesonep(a)gmail.com wrote: > > Hello Mariano, > WNOHANG is a constant is defined in sys/wait.h, after the compilation is not included in the object file. > > You will have to duplicate its value in the Smalltalk Code. It's value is 1, in linux is defined in bits/waitflags.h as > > #define WNOHANG 1 > > Cheers, > Pablo > > On Tue, Dec 22, 2015 at 5:12 PM, Mariano Martinez Peck <marianopeck(a)gmail.com <mailto:marianopeck@gmail.com>> wrote: > Hi guys, > > Say I want to call to waitpid like this: > > waitpid(childID, &status, WNOHANG); > > How can I do since I don't have access to WNOHANG int value in order to send it via argument .... ??? > > Any idea? > > Thanks in advance, > > -- > Mariano > http://marianopeck.wordpress.com <http://marianopeck.wordpress.com/> > > > > -- > Pablo Tesone. > tesonep(a)gmail.com <mailto:tesonep@gmail.com>

Dec. 22, 2015

Re: [Pharo-dev] Can I access symbolic constants from NB FFI?

by tesonep＠gmail.com

Hi Mariano, it is supossed to be Posix, but Posix.1, it's another revision. Since Solaris 10, it is supposed to supports all extensions of Posix ( http://docs.oracle.com/cd/E19253-01/816-5175/standards-5/index.html) and Irix 6 (is discontinued, and is not Posix.1 compatible) Also I can say that the GHC (Haskell) implementation assumes the value 1 for the constant, you can check the source code in: https://hackage.haskell.org/package/posix-waitpid-0.1/docs/src/System-Posix… I think is enough safe to have the 1 as a constant, if not you will have to generate a plugin for every platform. The other alternative is to read the constant value from the C Header, but is maybe an overkill. Chers, Pd: hace rato que estoy por aca, pero me cuesta responder, a veces va muy rapido y otras vuelan muy alto :). On Tue, Dec 22, 2015 at 5:36 PM, Mariano Martinez Peck < marianopeck(a)gmail.com> wrote: > > > On Tue, Dec 22, 2015 at 5:24 PM, tesonep(a)gmail.com <tesonep(a)gmail.com> > wrote: > >> Hello Mariano, >> WNOHANG is a constant is defined in sys/wait.h, after the >> compilation is not included in the object file. >> >> You will have to duplicate its value in the Smalltalk Code. It's value is >> 1, in linux is defined in bits/waitflags.h as >> >> #define WNOHANG 1 >> >> > mmmmmm but then I would need to take care about its different values in > different OS right? > I am reading for example this thread: > https://groups.google.com/forum/#!topic/comp.lang.python/_5rCpfYR_ZE > > sunos 4.1.3 : #define WNOHANG 1 > Solaris 2.4 : #define WNOHANG 0100 > OSF1 2.0 : #define WNOHANG 0x1 > Ultrix 4.4 : #define WNOHANG 1 > irix 4.0.5C : #define WNOHANG 0x1 > irix 5.2 : #define WNOHANG 0100 > irix 6.0.1 : #define WNOHANG 0100 > > OK..the thread is from 1995... I thought the POSIX standard would > standardize that... > > I am now checking at > /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/usr/include/sys/wait.h > > and it says: > > #define WNOHANG 0x00000001 > But again..I wonder how portable is to stick to that... > > Ok...maybe I will need to go with a VM primitive as #primGetChildExitStatus: > that way I can do the: > > self cCode: 'waitpid ( pidToHandle, &exitStatus, WNOHANG )' inSmalltalk: > [ exitStatus := -1 ]. > > > pd: que groso Pablito verte por aca!!!! > > > >> Cheers, >> Pablo >> >> On Tue, Dec 22, 2015 at 5:12 PM, Mariano Martinez Peck < >> marianopeck(a)gmail.com> wrote: >> >>> Hi guys, >>> >>> Say I want to call to waitpid like this: >>> >>> waitpid(childID, &status, WNOHANG); >>> >>> How can I do since I don't have access to WNOHANG int value in order to >>> send it via argument .... ??? >>> >>> Any idea? >>> >>> Thanks in advance, >>> >>> -- >>> Mariano >>> http://marianopeck.wordpress.com >>> >> >> >> >> -- >> Pablo Tesone. >> tesonep(a)gmail.com >> > > > > -- > Mariano > http://marianopeck.wordpress.com > -- Pablo Tesone. tesonep(a)gmail.com

Dec. 22, 2015

Re: [Pharo-dev] Can I access symbolic constants from NB FFI?

by Mariano Martinez Peck

On Tue, Dec 22, 2015 at 5:24 PM, tesonep(a)gmail.com <tesonep(a)gmail.com> wrote: > Hello Mariano, > WNOHANG is a constant is defined in sys/wait.h, after the > compilation is not included in the object file. > > You will have to duplicate its value in the Smalltalk Code. It's value is > 1, in linux is defined in bits/waitflags.h as > > #define WNOHANG 1 > > mmmmmm but then I would need to take care about its different values in different OS right? I am reading for example this thread: https://groups.google.com/forum/#!topic/comp.lang.python/_5rCpfYR_ZE sunos 4.1.3 : #define WNOHANG 1 Solaris 2.4 : #define WNOHANG 0100 OSF1 2.0 : #define WNOHANG 0x1 Ultrix 4.4 : #define WNOHANG 1 irix 4.0.5C : #define WNOHANG 0x1 irix 5.2 : #define WNOHANG 0100 irix 6.0.1 : #define WNOHANG 0100 OK..the thread is from 1995... I thought the POSIX standard would standardize that... I am now checking at /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/usr/include/sys/wait.h and it says: #define WNOHANG 0x00000001 But again..I wonder how portable is to stick to that... Ok...maybe I will need to go with a VM primitive as #primGetChildExitStatus: that way I can do the: self cCode: 'waitpid ( pidToHandle, &exitStatus, WNOHANG )' inSmalltalk: [ exitStatus := -1 ]. pd: que groso Pablito verte por aca!!!! > Cheers, > Pablo > > On Tue, Dec 22, 2015 at 5:12 PM, Mariano Martinez Peck < > marianopeck(a)gmail.com> wrote: > >> Hi guys, >> >> Say I want to call to waitpid like this: >> >> waitpid(childID, &status, WNOHANG); >> >> How can I do since I don't have access to WNOHANG int value in order to >> send it via argument .... ??? >> >> Any idea? >> >> Thanks in advance, >> >> -- >> Mariano >> http://marianopeck.wordpress.com >> > > > > -- > Pablo Tesone. > tesonep(a)gmail.com > -- Mariano http://marianopeck.wordpress.com

Dec. 22, 2015

Re: [Pharo-dev] Can I access symbolic constants from NB FFI?

by Chris Cunningham

I was going to point out SharedPool and defining it as a poolDictionary in the class definition, but you already know that, right? Is what you are pointing out is that once you have all of that setup, that NB doesn't allow you to use it by argument (but only by value)? The former I might help; the later is beyond me. -cbc On Tue, Dec 22, 2015 at 12:12 PM, Mariano Martinez Peck < marianopeck(a)gmail.com> wrote: > Hi guys, > > Say I want to call to waitpid like this: > > waitpid(childID, &status, WNOHANG); > > How can I do since I don't have access to WNOHANG int value in order to > send it via argument .... ??? > > Any idea? > > Thanks in advance, > > -- > Mariano > http://marianopeck.wordpress.com >

Dec. 22, 2015