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! Copyright (c) 2020 Jeffrey Armstrong <jeff@rainbow-100.com>
!
! Permission is hereby granted, free of charge, to any person obtaining a copy
! of this software and associated documentation files (the "Software"), to deal
! in the Software without restriction, including without limitation the rights
! to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
! copies of the Software, and to permit persons to whom the Software is
! furnished to do so, subject to the following conditions:
!
! The above copyright notice and this permission notice shall be included in
! all copies or substantial portions of the Software.
!
! The Software shall be used for Good, not Evil.
!
! THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
! IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
! FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
! AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
! LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
! OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
! SOFTWARE.

module binary
implicit none

    integer, parameter::binary_okay   =  0
    integer, parameter::binary_ignore = -1
    integer, parameter::binary_error  = -2

    type, abstract :: binary_handler
        
        contains
        
        ! Should return a stream-opened unit number
        procedure(handle_binary), deferred::handle_binary
        
    end type

    abstract interface
        function handle_binary(self, mimetype, url, iostatus)
        import::binary_handler
        class(binary_handler)::self
        character(*), intent(in)::mimetype
        character(*), intent(in)::url
        integer, intent(out)::iostatus
        integer::handle_binary
        end function handle_binary
    end interface
    
    contains
    
    function is_binary_file(mimetype) result(res)
    implicit none
    
        character(*), intent(in)::mimetype
        logical::res
        
        ! So I guess this actually works...
        res = (index(mimetype, "text/") <= 0)
        
    end function is_binary_file

end module binary