May 2009 - MacRuby-devel - lists.macosforge.org

[MacRuby] #225: regexp engine broken when a string contains non ascii characters
by MacRuby 19 May '09

19 May '09

#225: regexp engine broken when a string contains non ascii characters -------------------------------------+-------------------------------------- Reporter: mattaimonetti@… | Owner: lsansonetti@… Type: defect | Status: new Priority: critical | Milestone: MacRuby 0.4 Component: MacRuby | Keywords: regexp, bug -------------------------------------+-------------------------------------- Here is a sample code to reproduce the problem: {{{ html = %{<p><a href="http://www.flickr.com/people/jeanelietrujillo/">jeanelietrujillo</a> posted a photo:</p> <p><a href="http://www.flickr.com/photos/jeanelietrujillo/2211862262/" title="Galgani Décoration"><img src="http://farm3.static.flickr.com/2262/2211862262_2f08c343a3_m.jpg" width="240" height="240" alt="Galgani Décoration" /></a></p>} html.scan(/<img\s+src="(.+?)"/)[0][0] }}} ruby 1.9 returns: {{{ => "http://farm3.static.flickr.com/2262/2211862262_2f08c343a3_m.jpg" }}} macruby returns: {{{ => "ttp://farm3.static.flickr.com/2262/2211862262_2f08c343a3_m.jpg\"" }}} Now let's try to remove the é and replace it by a e: {{{ html = %{<p><a href="http://www.flickr.com/people/jeanelietrujillo/">jeanelietrujillo</a> posted a photo:</p> <p><a href="http://www.flickr.com/photos/jeanelietrujillo/2211862262/" title="Galgani Decoration"><img src="http://farm3.static.flickr.com/2262/2211862262_2f08c343a3_m.jpg" width="240" height="240" alt="Galgani Décoration" /></a></p>} html.scan(/<img\s+src="(.+?)"/)[0][0] }}} MacRuby now returns: {{{ => "http://farm3.static.flickr.com/2262/2211862262_2f08c343a3_m.jpg" }}} My guess is that the unicode characters mess up the the count to extract the matched string resulting in a substring starting one character too early. To prove my hypothesis here is another sample, this time with 2 "é" characters: {{{ html = %{<p><a href="http://www.flickr.com/people/jeanelietrujillo/">jeanelietrujillo</a>a posté une photo:</p> <p><a href="http://www.flickr.com/photos/jeanelietrujillo/2211862262/" title="Galgani Décoration"><img src="http://farm3.static.flickr.com/2262/2211862262_2f08c343a3_m.jpg" width="240" height="240" alt="Galgani Décoration" /></a></p>} html.scan(/<img\s+src="(.+?)"/)[0][0] }}} MacRuby returns: {{{ => "tp://farm3.static.flickr.com/2262/2211862262_2f08c343a3_m.jpg\" " }}} -- Ticket URL: <http://www.macruby.org/trac/ticket/225> MacRuby <http://macruby.org/>

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Tips to fix Unicode regular expression support?
by Jjgod Jiang 19 May '09

19 May '09

Hi all, As tracked by ticket #94 [1], Unicode (non-ASCII) regular expression is still unsupported in MacRuby 0.4. It seems that's pretty important for us Chinese developers, so I'd like to devote some time to fix it. However I rather new to MacRuby code base, I wonder if anyone can point me up a direction on how to fix it? Right now, in re.c, it seems all regular expressions are forced to use ASCII (ONIG_ENCODING_ASCII) and non-ASCII encoding support (enc/*) are not compiled in. - Jiang [1] https://www.macruby.org/trac/ticket/94

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error calling target of menu item
by Karl Varga 18 May '09

18 May '09

In the meantime to get around the thread problem I emailed about, I though I would add an NSMenuItem to the menu so that the user can click an 'Update Now' button and update the data on demand. However, whenever any of my menuitems are clicked I get the same error: /Users/karl/projects/gigameter/GigaMeter/build/Debug/GigaMeter.app/Contents/Resources/rb_main.rb:22:in `NSApplicationMain': wrong number of arguments (0 for 1) (ArgumentError) from /Users/karl/projects/gigameter/GigaMeter/build/Debug/GigaMeter.app/Contents/Resources/rb_main.rb:22:in `<main>' This is how my 'Update Now' menu items is declared (here *target* is a reference to the Controller instance): self.updateNow = self.menu.addItemWithTitle_action_keyEquivalent_('Update Now', 'actionUpdateNow', 'u') self.updateNow.enabled = true self.updateNow.target = target self.updateNow.toolTip = 'Update your Usage Data' and my Controller class has: class Controller attr_accessor :actionQuit, :actionConfigure, :actionUpdateNow def actionUpdateNow(sender) puts "action update called\n" doLogin saveDataToDisk self.menu.update(self.user) end ... end The menu is added to an NSStatusBar as so: menuZone = NSMenu.menuZone self.menu = NSMenu.allocWithZone(menuZone).init self.statusBar = NSStatusBar.systemStatusBar.statusItemWithLength(NSVariableStatusItemLength) self.statusBar.menu = self.menu Any ideas what's going on here? -- Karl Varga kjvarga(a)gmail.com Cell: +61 (0)4 2075 1356

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creating threads in a macruby gui app
by Karl Varga 18 May '09

18 May '09

I am wondering whether MacRuby 0.5 supports Cocoa threads? I have an application which runs in the background and which displays information in the system status bar (in a menu). It periodically logs into a website, retrives information and sets that information in the menu. The problem is that if I run this loop in the awakeFromNib method it occupies the current thread and the menu is unresponsive until that method returns. I've tried creating Cocoa threads but my application goes haywire (in XCode it enters the debugger and is otherwise unresponsive). What gives? Any idea how I can achieve what I want to do here? If the answer is POSIX threads or something, can I call back to (mac)ruby because that is where all my logic is? Below is the code I've tried: def awakeFromNib print NSThread.isMultiThreaded() # prints true self.menu.performSelectorInBackground_withObject_(:loginAndWaitThread, nil) NSThread.detachNewThreadSelector_toTarget_withObject_(:loginAndWaitThread, self.menu, nil) end -- Karl Varga kjvarga(a)gmail.com Cell: +61 (0)4 2075 1356

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Memory & Performance Issue with QTCaptureView & CIFilter
by Adam Elliot 16 May '09

16 May '09

Hello, I've been playing around with QTCaptureView to grab input from my iSight and I want to then run some Core Image filters over the image it's receiving. I first attempted this with Hotcoca and I got everything working, except when I ran everything the performance was significantly slower than the same application written in Objective-C. I went and rewrote things right in MacRuby to check if there were any overhead with the Hotcocoa libraries that could account for the slowness. Unfortunately the problem still existed. After analysis I'm noticing the application is eating memory rather quickly and then all at once releasing much of it and the cycle begins again. EG Starts at 40megs, grows quickly to 300megs, then drops to 40megs again. The same application in Objective-C runs steadily. Here's the basic code: def awakeFromNib session = QTCaptureSession.alloc.init device = QTCaptureDevice.defaultInputDeviceWithMediaType(QTMediaTypeVideo) device.open(nil) input = QTCaptureDeviceInput.alloc.initWithDevice(device) success = session.addInput(input, error:nil) @filter = CIFilter.filterWithName("CICrystallize") @filter.setDefaults @filter.setValue(5, forKey:"inputRadius") captureView.setCaptureSession(session) captureView.setDelegate(self) session.startRunning end def view(v, willDisplayImage:image) @filter.setValue(image, forKey:"inputImage") @filter.valueForKey "outputImage" end If you remove the setDelegate call things run just fine, but then you don't get the filtering. Also if you remove all the code from the delegate method the memory growth still occurs, but the video runs just as smoothly as the straight Objective C version. I'm not sure if the slowness is related to the memory growth or if they are separate issues. I've also had the memory grow quite uncontrollably to up to a gig before my system started thrashing and about a minute later it recovered. I'd love to try and fix this problem, but I'm out of ideas on where to look. If anyone has any suggestions on where I could dig around I'm all ears. Thanks, Adam Elliot

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Requiring a framework
by Keenan Brock 15 May '09

15 May '09

Hi, 1. Are the resources for installing gems? I've had less then stellar success for installing gems in 0.4. 2. In lieu of installing gems, can I just use any framework on the disk? I'm trying to use libpurple, the communication layer from Adium, Fire, pidgin, gaim (and others). # macirb >> framework '/Applications/Adium.app/Contents/Frameworks/ libpurple.framework' 2009-05-15 09:21:57.264 macruby[6027:10b] Error loading /Applications/ Adium.app/Contents/Frameworks/libpurple.framework/libpurple: dlopen(/ Applications/Adium.app/Contents/Frameworks/libpurple.framework/ libpurple, 265): no suitable image found. Did find: /Applications/Adium.app/Contents/Frameworks/libpurple.framework/ libpurple: no matching architecture in universal wrapper RuntimeError: framework at path `/Applications/Adium.app/Contents/ Frameworks/libpurple.framework' cannot be loaded: Error Domain=NSCocoaErrorDomain Code=3585 UserInfo=0x8006d3ac0 "The bundle “libpurple” could not be loaded because it does not contain a version for the current architecture." (dlopen_preflight(/Applications/ Adium.app/Contents/Frameworks/libpurple.framework/libpurple): no suitable image found. Did find: /Applications/Adium.app/Contents/Frameworks/libpurple.framework/ libpurple: no matching architecture in universal wrapper) from (irb):2:in `framework' from (irb):2 from /usr/local/bin/macirb:12:in `<main>' Is this a user error, 0.4, or macruby in general issue? Thanks, Keenan --- OSX 10.5.7 2GB XCode 3.1.2 MacRuby 0.4 (from the pkg)

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Key-value observing
by Jeremy Voorhis 15 May '09

15 May '09

Hello, I've been learning Cocoa, Objective-C and macruby in tandem and I was just wondering, are there any plans to integrate the key-value observing protocol with the attr_accessor family of methods? With a little experimentation, I found KVO is definitely possible with macruby, but the syntax is less than ideal (transcript made with the 0.4 release). ~ % macirb >> class Notifier >> attr_accessor :value >> end => nil >> class Observer >> def observeValueForKeyPath(path, ofObject:object, change:change, context:context) puts change end >> end => nil >> n = Notifier.new => #<Notifier:0x8005e91a0> >> n.addObserver(Observer.new, forKeyPath:'value', options:0, context:nil) => nil >> n.value = 42 => 42 >> n.setValue 42 {"kind"=>1} => nil Best, Jeremy Voorhis

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Accessing constants/enums
by Łukasz Adamczak 15 May '09

15 May '09

Hi, After a few days smooth sailing and playing with MacRuby, I just hit a wall: How do I invoke something like this in MacRuby: [[NSAppleEventManager sharedAppleEventManager] setEventHandler:self andSelector:@selector(getUrl:withReplyEvent:) forEventClass:kInternetEventClass andEventID:kAEGetURL]; I can't figure out where to find kInternetEventClass and kAEGetURL constants. Are they available from MacRuby? Thanks! -- Regards, Łukasz Adamczak

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Status of Fiber support?
by Jeremy Voorhis 14 May '09

14 May '09

Hello, I've just noticed that, at least in 0.4, Fiber#resume causes a segfault. I found this ticket in trac which obliquely addresses the issue: https://www.macruby.org/trac/ticket/81. Laurent: would a new ticket for this issue be helpful or noisy in this case? Best, Jeremy Voorhis

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[MacRuby] #253: Fibers are unsupported
by MacRuby 14 May '09

14 May '09

#253: Fibers are unsupported --------------------------------+------------------------------------------- Reporter: jvoorhis@… | Owner: lsansonetti@… Type: defect | Status: new Priority: major | Milestone: Component: MacRuby | Keywords: fiber segfault --------------------------------+------------------------------------------- An example of macruby 0.4 segfaulting on Fibers follows. Matt Aimonetti reports similar findings at http://lists.macosforge.org/pipermail/macruby- devel/2009-May/001717.html, including a failure to require 'fiber' in the 0.5 branch. ~ % macruby -v MacRuby version 0.4 (ruby 1.9.1) [universal-darwin9.5, x86_64] ~ % macruby -e 'Fiber.new{puts"hey"}.resume' hey -e:1: [BUG] Segmentation fault MacRuby version 0.4 (ruby 1.9.1) [universal-darwin9.5, x86_64] -- stack frame ------------ 0000 (0xc08000060): 00000004 0001 (0xc08000068): 00000000 0002 (0xc08000070): 00000004 0003 (0xc08000078): 00000000 0004 (0xc08000080): 00000004 0005 (0xc08000088): 8000867c0 0006 (0xc08000090): 800030800 0007 (0xc08000098): 00000004 0008 (0xc080000a0): 00000000 <- lfp <- dfp -- control frame ---------- c:0004 p:---- s:0009 b:0009 l:000008 d:000008 CFUNC :resume c:0003 p:0019 s:0006 b:0006 l:002348 d:002348 TOP -e:1 c:0002 p:---- s:0004 b:0004 l:000003 d:000003 FINISH :inherited: c:0001 p:0000 s:0002 b:0002 l:000001 d:000001 TOP --------------------------- DBG> : "-e:1:in `resume'" DBG> : "-e:1:in `<main>'" -- backtrace of native function call (Use addr2line) -- 0x10010f301 0x100029544 0x100029628 0x1000c245d 0x7fff82bf13aa 0x7fff5fc328d8 ------------------------------------------------------- zsh: abort macruby -e 'Fiber.new{puts"hey"}.resume' -- Ticket URL: <http://www.macruby.org/trac/ticket/253> MacRuby <http://macruby.org/>

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