Fortran libraries to work with parquet files

[vmagnin]

@ludnic

While I’d like to look into it and see if writing the interfaces is within my reach I don’t have the right knowledge to get started. Would the group here have any advice on how to get started with something like this?

If ever you are ready for that adventure, you may look at:

How to hack my cfwrapper to generate Fortran interfaces for C prototypes

I have written a How-to for people wanting to try to use (to hack) the gtk-fortran Python cfwrapper with other C libraries: As it was polished for 12 years, you may obtain very good results with “clean” C header files. The problems you may encounter are also detailed. No warranty, it’s a hack!

I have made a test with the header files in the directories /usr/include/arrow-glib and /usr/include/parquet-glib and, with some minimal tweaking (adding some missing GLib types in the wrapper and modifying a regex), obtained 1019 Fortran interfaces like:

!GParquetArrowFileWriter * gparquet_arrow_file_writer_new_path(GArrowSchema *schema, const gchar *path, GParquetWriterProperties *writer_properties, GError **error);
function gparquet_arrow_file_writer_new_path(schema, path, writer_properties,&
& error) bind(c)
  import :: c_ptr, c_char
  implicit none
  type(c_ptr) :: gparquet_arrow_file_writer_new_path
  type(c_ptr), value :: schema
  character(kind=c_char), dimension(*) :: path
  type(c_ptr), value :: writer_properties
  type(c_ptr), value :: error
end function

If it is those interfaces (arrow-glib and parquet-glib) that you need, I can send you the interfaces for testing.