The iOS App Bundle

 Last week I have been tasked with porting GFile to iOS. As part of file IO, GFile needs to be able to get the content out of the App Bundle that ships with the app executable. The end user would place all of their assets into this Bundle and it would be accessable for reading only from that Bundle when the app is released on the app store.

I ran into a bit of an issue with this, I did not know how to get GFile to read the information from the App Bundle. So I read up on Bundle documentation and Apple suggests using the NSBundle class to grab the info. At first I had thought to use the Apple recommended method, so I looked into using some kind of search method to see if the current directory was in the bundle itself. After seeing this was a difficult task, I looked into using C++ functions to read the data. I found that you can use plain C functions to read the data from the bundle, assuming that you can get the path to the bundle. I tested this with the C++ equivalent code, and it worked nearly-perfectly. I had an exception thrown when you tried to access a file that did not exist in the bundle due to a change made in iOS 13. 

I then researched on this change in iOS 13 and it came down to a setting in XCode that was not set in CMake which would usually be set in a new iOS project. I set the setting and the code works like intended. I will be moving onto GLog, which should be a fairly simple library to port, and then onto GWindow in hopes to get some graphics running in the future.