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Re: resolving aliases
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Re: resolving aliases


  • Subject: Re: resolving aliases
  • From: Yvon Thoraval <email@hidden>
  • Date: Fri, 4 Aug 2006 14:43:00 +0200


Le 4 août 06 à 13:56, Bill Bumgarner a écrit :


The easiest way to solve this is to write a very simple Objective-C class that makes the appropriate C calls to resolve the alias. Then, load said class into your RubyCocoa app -- either by linking it into the main project (if possible -- I haven't looked closely at RubyCocoa's Cocoa project templates) or by creating a standard Cocoa style NSBundle and dynamically loading it via NSBundle's API from Ruby.



yes right i even found something here, allready done :
<http://bdistributed.com/Projects/BDAlias/>
they are following correctly what is given by Apple here : <http:// developer.apple.com/documentation/Cocoa/Conceptual/LowLevelFileMgmt/ Tasks/ResolvingAliases.html> (Resolving Aliases).


i did a little test on this BDAlias class, desapointing, here is my ruby test :
------------------------------------------------------------------------ ------------------------------------------------
OSX.ns_import('BDAlias')


f=OSX::BDAlias.alloc.initWithPath("/Users/yvon/work/RubyCocoa/ MacSOUPSwitcher/map/read-alias/search/for/the/original/file/read- alias.pl")
p "f.class=#{f.class}"
# => "f.class=OSX::BDAlias"
p "f.fullPath=#{f.fullPath}"
# => "f.fullPath=/Users/yvon/work/RubyCocoa/MacSOUPSwitcher/map/read- alias/search/for/the/original/file/read-alias.pl"
------------------------------------------------------------------------ ------------------------------------------------


the BDAlias.rtf file saying :
- (NSString *)fullPath
Returns an autoreleased string containing the full path of the object pointed to by an alias.
_____________________________________^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^

BUT in my test fullPath returns the path of the alias itself ))) not of the file/folder the alias point to...

howver, i get the path of the alias, i've read the ObjC code and it looks correct, very similar to Apple's writing.

something i misunderstood ?

let me tell you what i've learned on how to resolve alias (from Apple's page reading) ;

- 1 -  convert URL to FSRef ;
- 2 - resolve alias in the FSRef "domain" ;
- 3 convert back FSRef to URL.

that's all.
that's exactly what is doing the class BDAlias.

best,

Yvon _______________________________________________
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  • Follow-Ups:
    • Re: resolving aliases
      • From: Chris Hanson <email@hidden>
References: 
 >resolving aliases (From: Yvon Thoraval <email@hidden>)
 >Re: resolving aliases (From: Bill Bumgarner <email@hidden>)

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