This is an interface for encoding both scalar and array.
Warning
The encoded string is returned as varying length character string, character(len=:), allocatable:: string, thus the
compiler must support such a Fortran (2003) feature.
Note
Before start to encode anything the library must be initialized. The procedure b64_init must be called at first. The
global variable is_b64_initialized can be used to check the status of the initialization.
Nodes of different colours represent the following:
Solid arrows point from a procedure to one which it calls. Dashed
arrows point from an interface to procedures which implement that interface.
This could include the module procedures in a generic interface or the
implementation in a submodule of an interface in a parent module.