Re: Extract keys, values from 'usrf' Record Type NSAppleEventDescriptor?
Re: Extract keys, values from 'usrf' Record Type NSAppleEventDescriptor?
- Subject: Re: Extract keys, values from 'usrf' Record Type NSAppleEventDescriptor?
- From: has <email@hidden>
- Date: Sun, 21 Feb 2010 22:19:26 +0000
Jerry Krinock wrote:
> I create an NSAppleScript to read the current window name and URL from Safari and return it as a record [1]. When I execute it, I get a nice-looking NSAppleEventDescriptor with the following -description (line breaks added for readability):
>
> <NSAppleEventDescriptor: {
> 'usrf':
> [
> 'utxt'("aNam"),
> 'utxt'("Apple"),
> 'utxt'("aUrl"),
> 'utxt'("http://www.apple.com";)
> ] }>
>
> As you can see, the desired keys and values are all in there. How can I get them out? (Spent an hour reading documentation to no avail.)
ObjC-appscript has an AEMCodecs class that includes code for packing and unpacking AppleScript-style records, if you don't mind embedding the Appscript framework or extracting the classes you want by hand. (I've received a patch from another appscript user to break out AEMCodecs and some other bits for this sort of use, but I've been too busy recently to apply it.)
> tell application "Safari"
> set aName to name of front document
> set aUrl to URL of front document
> end tell
> set aRecord to {aNam:aName, aUrl:aUrl}
Unless the script needs to be user supplied, you could skip the NSAppleScript bit altogether. e.g. Running the above script through ASTranslate (from the appscript website) gives me the following raw code, which'd clean up nicely:
#import "SFGlue/SFGlue.h"
SFApplication *safari = [SFApplication applicationWithName: @"Safari"];
SFReference *ref = [[[safari documents] at: 1] name];
id result = [ref getItem];
#import "SFGlue/SFGlue.h"
SFApplication *safari = [SFApplication applicationWithName: @"Safari"];
SFReference *ref = [[[safari documents] at: 1] URL];
id result = [ref getItem];
Or there's Apple's own bridge - not as good, but I'm guessing it would work for this.
HTH
has
--
Control AppleScriptable applications from Python, Ruby and ObjC:
http://appscript.sourceforge.net
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