May 2010 - MacRuby-devel - lists.macosforge.org

FTP in MacRuby
by Daniel Fontaine 07 May '10

07 May '10

Does Net::FTP not work on MacRuby 0.6? I am trying a simple Net::FTP.new(server, user, password) and receive EOFError: end of file reached from /Library/Frameworks/MacRuby.framework/Versions/0.6/usr/lib/ruby/1.9.0/monitor.rb:188:in `synchronize' from /Library/Frameworks/MacRuby.framework/Versions/0.6/usr/lib/ruby/1.9.0/monitor.rb:188:in `synchronize' The same method works fine under standard ruby. I am new to MacRuby, so sorry if this is a known issue. thanks, Dan

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Accessing objc methods aliased by ruby methods
by Dave Baldwin 06 May '10

06 May '10

For example, the method 'class' is present in objective C as well as in Ruby but invoking obj.class will use the Ruby version How do I force the objc version to be used instead? Obviously if the two version do the same thing then this is a moot issue but if they do different things you may need to choose the 'hidden' version. Thanks, Dave.

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[MacRuby] #669: Unable to find QTKit constant within a MacRuby app
by MacRuby 06 May '10

06 May '10

#669: Unable to find QTKit constant within a MacRuby app ----------------------------------------+----------------------------------- Reporter: martinlagardette@… | Owner: lsansonetti@… Type: defect | Status: new Priority: major | Milestone: Component: MacRuby | Keywords: qtkit ----------------------------------------+----------------------------------- MacRuby seems unable to find a constant included in the QTKit framework when called from within a MacRuby app. On the command line, everything is fine: {{{ $> macruby -e "framework 'QTKit'; p QTIncludeCommonTypes" 0 $> macruby -e "framework 'Cocoa'; framework 'QTKit'; p QTIncludeCommonTypes" 0 }}} Attached is a simple MacRuby app. Freshly created, I just linked the QTKit framework, added `framework "QTKit"` and tried to print `QTIncludeCommonTypes`. -- Ticket URL: <http://www.macruby.org/trac/ticket/669> MacRuby <http://macruby.org/>

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[MacRuby] #690: calling `!= nil' on an NSString raises a TypeError exception
by MacRuby 06 May '10

06 May '10

#690: calling `!= nil' on an NSString raises a TypeError exception -----------------------------------+---------------------------------------- Reporter: lsansonetti@… | Owner: lsansonetti@… Type: defect | Status: new Priority: blocker | Milestone: Component: MacRuby | Keywords: -----------------------------------+---------------------------------------- {{{ $ ./miniruby -e "p NSString.stringWithString('42') != nil" /Users/lrz/src/macruby-trunk/-e:1:in `<main>': can't convert nil into String (TypeError) }}} -- Ticket URL: <http://www.macruby.org/trac/ticket/690> MacRuby <http://macruby.org/>

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[MacRuby] #691: Runtime should allow pointer types for C-string arguments
by MacRuby 06 May '10

06 May '10

#691: Runtime should allow pointer types for C-string arguments --------------------------------+------------------------------------------- Reporter: mike@… | Owner: lsansonetti@… Type: enhancement | Status: new Priority: major | Milestone: Component: MacRuby | Keywords: --------------------------------+------------------------------------------- The MacRuby runtime does not allow calls to C functions that take a string buffer using Pointer types. So, any C functions that need to fill a string buffer cannot be called. For example, I'm trying to do some GLSL shaders with MacRuby. I cannot call glGetShaderInfoLog if the shader compilation fails. The C function's prototype is: void glGetShaderInfoLog(GLuint shader, GLsizei maxLength, GLsizei * length, GLchar * infoLog); I couldn't find any docs on how Pointer.new_with_type, so I tried a few things, such as: log_info = Pointer.new_with_type('c', 4096) length = Pointer.new_with_type('i') glGetShaderInfoLog(@shader_id, 4096, length, log_info) However, I get the error: TypeError: can't convert Pointer into String It seems that the bridge wants log_info to be a String object. But, using a String causes a bus error. I'm expecting that the bridge isn't expecting the string to be mutated. -- Ticket URL: <http://www.macruby.org/trac/ticket/691> MacRuby <http://macruby.org/>

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[MacRuby] #684: MacRuby cannot run tests using the Shoulda gem
by MacRuby 06 May '10

06 May '10

#684: MacRuby cannot run tests using the Shoulda gem --------------------------------+------------------------------------------- Reporter: mike@… | Owner: lsansonetti@… Type: defect | Status: new Priority: major | Milestone: Component: MacRuby | Keywords: --------------------------------+------------------------------------------- MacRuby (0.6 release) doesn't seem to be able to run tests that use the "Shoulda" gem. I've tried Ruby 1.8.x and Ruby 1.9.x and they both work correctly. To recreate the problem, install the Shoulda gem: {{{macgem install thoughtbot-shoulda --source=http://gems.github.com}}} Then, run the attached script with macruby. You will get errors that look like this: {{{ 1) Error: test: My factorial method should return 1 when passed 0.(TC_Test): NoMethodError: undefined method `test: My factorial method should return 1 when passed 0.' for #<TC_Test:0x200240f60> }}} -- Ticket URL: <http://www.macruby.org/trac/ticket/684> MacRuby <http://macruby.org/>

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[MacRuby] #680: String.crypt crashes when called with no arguments
by MacRuby 06 May '10

06 May '10

#680: String.crypt crashes when called with no arguments -------------------------------+-------------------------------------------- Reporter: niklas@… | Owner: lsansonetti@… Type: defect | Status: new Priority: minor | Milestone: MacRuby 0.6 Component: MacRuby | Keywords: -------------------------------+-------------------------------------------- When calling String.crypt with no arguments macruby crashes: {{{ > macirb irb(main):001:0> "hallo".crypt() zsh: illegal hardware instruction macirb }}} If called with an empty string it raises correctly: {{{ > macirb irb(main):001:0> "hallo".crypt("") ArgumentError: salt too short (need >=2 bytes) from /Users/niklas/(irb):1:in `<main>' irb(main):002:0> }}} I think this is a minor bug as crypt needs at least 2 bytes, but shouldn't it raise an error instead of crashing? Tested with MacRuby 0.6 on 10.6.3 -- Ticket URL: <http://www.macruby.org/trac/ticket/680> MacRuby <http://macruby.org/>

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Passing a string buffer to a C function
by Mike Taylor 05 May '10

05 May '10

Hi all, I'm trying to do some GLSL shaders with MacRuby. However, I'm a bit stumped as to how to call glGetShaderInfoLog if the shader compilation fails. The C function's prototype is: void glGetShaderInfoLog(GLuint shader, GLsizei maxLength, GLsizei * length, GLchar * infoLog); I couldn't find any docs on how Pointer.new_with_type, so I tried a few things, such as: log_info = Pointer.new_with_type('c', 4096) length = Pointer.new_with_type('i') glGetShaderInfoLog(@shader_id, 4096, length, log_info) However, I get the error: TypeError: can't convert Pointer into String It seems that the bridge wants log_info to be a String object. But, using a String causes a bus error. I'm expecting that the bridge isn't expecting the string to be mutated. Any suggestions would be appreciated! /\/\ike

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Comparison between String and nil fails.
by Michel Steuwer 05 May '10

05 May '10

Hi everyone, yesterday i migrated my little MacRuby project to 0.6 and i found a kind of strange behavior in a comparison between a string and nil. In MacRuby 0.5 the line worked as expected. I get the following error message in a comparison between a string on the left and nil on the right: can't convert nil into String (TypeError) I made a little demo project to show the problem. The string i want to compare comes out of a userInfo dictionary i get when iTunes send a notification through the NSDistributredNotificationCenter. In the demo project the error occurs, if you play, pause, or skip a song in iTunes (every time i get a notification from iTunes). So here the code in which the error occurs: def songChanged(notification) NSLog("notification.userInfo[Name] #{notification.userInfo['Name']}.") NSLog("notification.userInfo[Name].nil? #{notification.userInfo['Name'].nil?}.") NSLog("notification.userInfo[Name].class #{notification.userInfo['Name'].class}.") NSLog("notification.userInfo[Name] != nil #{notification.userInfo['Name'] != nil}") end The method receives a notification from iTunes and the last line in the method fails ( notification.userInfo['Name'] != nil ). I don't know where the problem is, but i guess the comparison should just return false. One again, in MacRuby 0.5 the line worked as expected. You can find the hole demo project at: http://github.com/michelSt/MacRubyBug Thanks, Michel -- Michel Steuwer | michel.steuwer(a)onlinehome.de

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Re: [MacRuby-devel] MacRuby-devel Digest, Vol 27, Issue 13
by Tiago Ribeiro 05 May '10

05 May '10

Thanks a lot for the information Thibault, very useful!! Take care >Date: Tue, 4 May 2010 15:13:13 -0700 >From: Thibault Martin-Lagardette <thibault.ml(a)gmail.com> >To: "MacRuby development discussions." > <macruby-devel(a)lists.macosforge.org> >Subject: Re: [MacRuby-devel] [ANN] MacRuby 0.6 >Message-ID: > <h2qb9f759f51005041513h355241baje3e28f63e2b49378(a)mail.gmail.com> >Content-Type: text/plain; charset="iso-8859-1" > >Hi Tiago! > >We are sorry that the PostgreSQL gem is not yet fully installable via >macgem. >The one we managed to install was ruby-pg 0.9.0 ( >http://bitbucket.org/ged/ruby-pg/downloads) >However, the gem in itself has an extconf.rb file with a syntax that is not >yet supported in MacRuby and probably won't be soon enough. > >To install and use ruby-pg, you'll need to do the following: >- Download ruby-pg 0.9.0 from http://bitbucket.org/ged/ruby-pg/downloads >- Extract wherever you want, let's say in /tmp/ruby-pg for example >- Go in the extracted ruby-pg directory, and apply the patch ( >https://gist.github.com/00be9e82ed4fd548c29d ) by doing: patch -p0 < >/path/to/extconf.rb >- cd into the "ext" directory, and run the following commands: >$> macruby extconf.rb # potentially add --with-pg-config if you need >$> make >$> sudo make install >You will have to make sure that your local installation of PostgreSQL is >compiled for both i386 and x86_64 bits, MacRuby requires it. > >Once you have issued the latest command, the extension "pg_ext" will be >installed (without needing gems). You can either rename pg_ext to pg, or >create a pg.rb file that requires pg_ext (which is exactly what the gem does >when installed, however installing ruby-pg has proven to less than >straightforward [even with ruby19], so it's easier to do it this way ;-)). > >Hope this helps, good luck with that! >-- >Thibault Martin-Lagardette

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