MacOSX-SDKs

Their `libcoreservices` has been useful to me for system-directory discovery on post-macOS-10.9 systems without having to install the whole heavyweight "macOS SDK" behind a Developer login wall: https://github.com/PureDarwin/libcoreservices These were available in Apple's open-source Libc until (afaict) Libc versions 9xx.x.x, corresponding to Mac OS X 10.9.x: https://opensource.apple.com/source/Libc/Libc-997.90.3/inclu... They were also available in the Mac OS X / macOS SDK package from as far back as I could find (10.1.x) through macOS 10.11. - https://github.com/phracker/MacOSX-SDKs/blob/master/MacOSX10... - https://github.com/phracker/MacOSX-SDKs/blob/master/MacOSX10... - https://github.com/phracker/MacOSX-SDKs/blob/master/MacOSX10... macOS 10.12 introduced the new equivalent `sysdir` and deprecated `NSSystemDirectories`. These were on

Hey HN! Didn't expect to see Fig here this morning. We just released a new version of Fig that allows users to install a custom input method on macOS. This means we now work with over a dozen new terminals, including all JetBrain IDEs, Alacritty, Kitty, WezTerm and more. The engineering behind it was surprisingly tricky since these APIs are not as well documented as you'd hope. (Indeed, the best place to look is the C header files [0]) But with a lot of trial and error, we've managed to get an implementation we're happy with. (That said, if anyone has tips on how to install an input method, without requiring a system restart, I'd love to hear them!) I'll be around all day to answer any questions about how Fig works under the hood! -- Also just to address some stuff that generally comes up when we're posted on HN: 1. Why is there a login?

Another approach for this is to explore the format through Apple's tools for building dictionaries – as they provide a "Dictionary Development Kit" in Xcode's downloadable "Additional Tools" package (which has documentation for the XML format and a bunch of scripts/binaries for building the bundle). I wound up doing this a while ago for a similar toy project. After some poking around, it turned out that dictionary bundles are entirely supported by system APIs in CoreServices! The APIs are private, but Apple accidentally shipped a header file with documentation for them in the 10.7 SDK [1]. You can load a dictionary with `IDXCreateIndexObject()`, read through its indices with the search methods (and the convenient `kIDXSearchAllMatch`), and get pointers to its entry data with `IDXGetFieldDataPtrs()`. It takes a bit of fiddling to figure ou

I just ran across a COM interface in the MOST unexpected of places: Apple's CoreMediaIO CFPlugIn video capture device plugin interface! https://github.com/phracker/MacOSX-SDKs/blob/master/MacOSX10... /* File: CMIOHardwarePlugIn.h Contains: API for the CFPlugIn that implements an CMIO driver for the DAL from user space Copyright: © 2004-2010 by Apple Inc., all rights reserved. */ [...] /*! @method QueryInterface @abstract The IUnknown method for finding an interface on a CFPlugIn type. @param self The CFPlugIn type to query. @param uuid The UUID of the interface to find. @param interface The returned interface or NULL if none w

You can find a copy of the MacOSX-SDKs on github, i.e. https://github.com/phracker/MacOSX-SDKs/blob/8519a1de16d8384...