[MacPorts] #13509: Support .dmg disk images as distfiles with new use_dmg option

[MacPorts]

#13509: Support .dmg disk images as distfiles with new use_dmg option
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  Reporter:  ryandesign at macports.org  |       Owner:  ryandesign at macports.org   
      Type:  enhancement              |      Status:  new                       
  Priority:  Normal                   |   Milestone:  MacPorts base enhancements
 Component:  base                     |     Version:  1.6.0                     
Resolution:                           |    Keywords:                            
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Changes (by boeyms at macports.org):

 * cc: boeyms at macports.org (added)

Comment:

 I haven't tested it yet, but it looks good.  One small suggestion, though:
 if it's not too much effort, it'd be nice to wrap this bit in a test for
 the platform that the user is running on so that fails more gracefully if
 MacPorts is not installed on Mac OS X.

 For other platforms, there's a Java program called
 [http://hem.bredband.net/catacombae/dmgx.html DMGExtractor], but it
 doesn't fail gracefully when it doesn't succeed, it's not really designed
 for command-line use (though it can be used that way), and it only works
 for some UDIF dmgs (those that have been successfully reverse-engineered,
 since it seems that Apple is not releasing the specs).

-- 
Ticket URL: <http://trac.macosforge.org/projects/macports/ticket/13509#comment:1>
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