[randy408]

Writing a naive PNG parser is easy, but handling all the corner cases is harder than it should be, e.g. text chunk fields can be variable- and even zero-length:

1. https://github.com/randy408/libspng/blob/3439bf5c173421b1af4...

2. https://www.w3.org/TR/2003/REC-PNG-20031110/#11iTXt