This will not work:
if ( [potentialPath length] > 255 ) ... error: filename too long
because HFS+ uses some decomposed form.
This might work:
if ( [[ NSString stringWithUTF8String: [potentialPath
fileSystemRepresentation] ] length] > 255 ) ...
but looks kind of convoluted and inefficient.
There are two methods in NSString:
decomposedStringWithCanonicalMapping
decomposedStringWithCompatibilityMapping
but the documentation does not say which (if any) should be used to
convert a potentialPath into a form used in HFS+.
Kind regards,
Gerriet.
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