May 2010 - Pharo-users - lists.pharo.org

Re: [Pharo-users] Using FFI to call a MacOs System function

by Mariano Martinez Peck

BTW....keyboards seems to be a .h (a header) , but not a library...at least in my mac Do you have also the library ? I am still newbie with the Mac OS :( Cheers mariano On Wed, May 5, 2010 at 11:10 PM, Mariano Martinez Peck < marianopeck(a)gmail.com> wrote: > > > On Tue, May 4, 2010 at 4:46 PM, David Wilson <djwilson(a)bluewin.ch> wrote: > >> Hi >> >> I'm new to Pharo (although I was a Smalltalk programmer in the 90's), and >> I'm trying to use FFI to access an MacOs system function: >> >> > Hi and welcome! > > >> apiKLGetKeyboardLayoutCount >> < cdecl: ulong 'KLGetKeyboardLayoutCount' (void) module: 'keyboards'> >> ^ self externalCallFailed. >> >> I get an error "'Unable to find function address'" which seems to say the >> OS-module "keyboards" can't be found. >> > > Exactly. That's the problem. > > >> I can't figure out what the address should be. >> The function is defined here: >> http://developer.apple.com/legacy/mac/library/documentation/Carbon/Referenc… >> (yes, it's deprecated, I have a very old mac runnning 10.4). >> >> > But you see the library in your computer, isn't it ? I mean, it is there, > but FFI doesn't find it ? > > > >> I'm not sure if I'm using FFI correctly, do I have to somehow include the >> external library in the Pharo VM? >> > > No, you shouldn't need to do that. However, you can try to put them there > just to see if that's the problem. I think that at some point (depends on an > order) the library is searched in the same place where you are calling from. > So, yes, do a test, but just a test. It should work without doing that. > > How did you install FFI ? Which Pharo VM and image versions are you using > ? > > Can anyone help? >> >> > I would like too, but I don't have such library. > > I developed a wrapper for a Clibrary called OpenDBX using FFI. In our > website, some people experimented similar problems. > Please take a look to the title "Problems with Mac OS:" of the following > link: > > http://www.squeakdbx.org/Compiling%20and%20installing%20OpenDBX > > I also cc'ed people that can help you. > > Cheers > > Mariano > > > I'm looked for FFI examples, but don't find anything helpful. >> >> David >> >> >> _______________________________________________ >> Pharo-users mailing list >> Pharo-users(a)lists.gforge.inria.fr >> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users >> > >

May 5, 2010

Re: [Pharo-users] Using FFI to call a MacOs System function

by Mariano Martinez Peck

On Tue, May 4, 2010 at 4:46 PM, David Wilson <djwilson(a)bluewin.ch> wrote: > Hi > > I'm new to Pharo (although I was a Smalltalk programmer in the 90's), and > I'm trying to use FFI to access an MacOs system function: > > Hi and welcome! > apiKLGetKeyboardLayoutCount > < cdecl: ulong 'KLGetKeyboardLayoutCount' (void) module: 'keyboards'> > ^ self externalCallFailed. > > I get an error "'Unable to find function address'" which seems to say the > OS-module "keyboards" can't be found. > Exactly. That's the problem. > I can't figure out what the address should be. > The function is defined here: > http://developer.apple.com/legacy/mac/library/documentation/Carbon/Referenc… > (yes, it's deprecated, I have a very old mac runnning 10.4). > > But you see the library in your computer, isn't it ? I mean, it is there, but FFI doesn't find it ? > I'm not sure if I'm using FFI correctly, do I have to somehow include the > external library in the Pharo VM? > No, you shouldn't need to do that. However, you can try to put them there just to see if that's the problem. I think that at some point (depends on an order) the library is searched in the same place where you are calling from. So, yes, do a test, but just a test. It should work without doing that. How did you install FFI ? Which Pharo VM and image versions are you using ? Can anyone help? > > I would like too, but I don't have such library. I developed a wrapper for a Clibrary called OpenDBX using FFI. In our website, some people experimented similar problems. Please take a look to the title "Problems with Mac OS:" of the following link: http://www.squeakdbx.org/Compiling%20and%20installing%20OpenDBX I also cc'ed people that can help you. Cheers Mariano I'm looked for FFI examples, but don't find anything helpful. > > David > > > _______________________________________________ > Pharo-users mailing list > Pharo-users(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users >

May 5, 2010

Newbie: How to load and use HTTP parser

by Andrei Stebakov

Hi I have a simple task of parsing some html content in Pharo (loading an html page using HTTPSocket and retrieving useful info from it). Having browsed for an html parser in my current one-click Pharo 1.0 image, I couldn't find one. How do I find/download a (the) HTML parser? Thank you, Andrei

May 5, 2010

Using FFI to call a MacOs System function

by David Wilson

Hi I'm new to Pharo (although I was a Smalltalk programmer in the 90's), and I'm trying to use FFI to access an MacOs system function: apiKLGetKeyboardLayoutCount < cdecl: ulong 'KLGetKeyboardLayoutCount' (void) module: 'keyboards'> ^ self externalCallFailed. I get an error "'Unable to find function address'" which seems to say the OS-module "keyboards" can't be found. I can't figure out what the address should be. The function is defined here: http://developer.apple.com/legacy/mac/ library/documentation/Carbon/Reference/KeyboardLayoutServices/ Reference/reference.html (yes, it's deprecated, I have a very old mac runnning 10.4). I'm not sure if I'm using FFI correctly, do I have to somehow include the external library in the Pharo VM? Can anyone help? I'm looked for FFI examples, but don't find anything helpful. David

May 4, 2010

Pharocasts: Dynamic finder with #doesNotUnderstand, #perform and Regex

by laurent laffont

Here: http://pharocasts.blogspot.com/2010/05/dynamic-finder-with-doesnotunderstan… This is the sequel to SandstoneDb, simple ActiveRecord style persistence screencast. I show how to: - override Object#doesNotUnderstand in your class to answer to unknown messages - use regular expressions to extract substrings - use #perform: and #perform:with: to send a message dynamically - develop new code in the debugger without stopping current call. Inspired by Ruby On Rails ActiveRecord dynamic finder. Cheers, Laurent Laffont

May 4, 2010