Wie schreibe ich, wenn ich mit "C language string array" wie argv [] in Ruby-FFI umgehen möchte?

int execvp(const char *file, char *const argv[]);

module Exec
  extend FFI::Library
  attach_function :execvp, [:string, :pointer], :int
end

strptrs = []
strptrs << FFI::MemoryPointer.from_string("vim")
strptrs << FFI::MemoryPointer.from_string("/tmp/foo")
strptrs << nil

# Now load all the pointers into a native memory block
argv = FFI::MemoryPointer.new(:pointer, strptrs.length)
strptrs.each_with_index do |p, i|
    argv[i].put_pointer(0,  p)
end

Exec.execvp("vim", argv)

Recommended Posts