[Objective-C Classes List] Retrieves an ordered, filtered list of Objective-C NSObject subclasses and writes them to file. #JXA #JavaScript #ObjectiveC #ObjC #classes #objc_copyClassList

[JSObjC] Get Classes List.js

ObjC.import('stdlib');
ObjC.import('Foundation');

__NSString__ = $.NSString.stringWithString.bind($.NSString);
ObjC.bindFunction('objc_copyClassList', ['void**', ['int']]);
ObjC.bindFunction('class_getName', ['char *', ['void*']]);
ObjC.bindFunction('class_getSuperclass', ['void*', ['void*']]);
ObjC.bindFunction('class_isMetaClass', ['bool *', ['void*']]);

i          = 0; // Counter variable
className  = undefined; // An individual Objective-C class name
classNames = ["NSObject"]; // An array of Objective-C class names

re   = /^[A-Z]{3}[^_]+$/; // RegEx pattern filtering class list
dir  = '~/Documents/Scripts/AppleScript/data/' // Output folder
file = 'NSCLASSES'; // Filename to write out to
fp   = __NSString__(dir + file).stringByStandardizingPath;
utf8 = $.NSUTF8StringEncoding;


objc_classes = $.objc_copyClassList(undefined);	

while (className != 'nil') {
	objc_class = objc_classes[i++];
	className = $.class_getName(objc_class);
	superName = $.class_getName($.class_getSuperclass(objc_class));
	if (superName=="NSObject") { classNames.push(className); }
}

$.free(objc_classes);
$.free(objc_class);

__NSString__(classNames.filter(x=>x.match(re)!=null).sort().join('\n'))
.writeToFileAtomicallyEncodingError(fp,true,utf8,$());