librnp.rb in rnp-1.0.3

- old
+ new

@@ -2,10 +2,12 @@
 
 # (c) 2018 Ribose Inc.
 
 require 'ffi'
 
+require 'rnp/error'
+
 # @api private
 module LibRnp
   extend FFI::Library
   ffi_lib %w[rnp-0 rnp]
 
@@ -285,9 +287,44 @@
                   :uint32
   attach_function :rnp_identifier_iterator_destroy,
                   %i[pointer],
                   :uint32
 
+  # some newer APIs that may not be present
+  {
+    # key export
+    rnp_key_export: [%i[pointer pointer uint32], :uint32],
+    # enarmor/dearmor
+    rnp_enarmor: [%i[pointer pointer pointer], :uint32],
+    rnp_dearmor: [%i[pointer pointer], :uint32],
+    # versioning
+    rnp_version_string: [%i[], :string],
+    rnp_version_string_full: [%i[], :string],
+    rnp_version: [%i[], :uint32],
+    rnp_version_for: [%i[uint32 uint32 uint32], :uint32],
+    rnp_version_major: [%i[uint32], :uint32],
+    rnp_version_minor: [%i[uint32], :uint32],
+    rnp_version_patch: [%i[uint32], :uint32]
+  }.each do |name, signature|
+    present = ffi_libraries[0].find_function(name.to_s)
+    if !present
+      class_eval do
+        define_singleton_method(name) do |*|
+          raise Rnp::FeatureNotAvailableError, name
+        end
+      end
+    else
+      attach_function name, signature[0], signature[1]
+    end
+    class_eval do
+      const_set("HAVE_#{name.upcase}", present)
+    end
+  end
+
+  RNP_KEY_EXPORT_ARMORED = (1 << 0)
+  RNP_KEY_EXPORT_PUBLIC =  (1 << 1)
+  RNP_KEY_EXPORT_SECRET =  (1 << 2)
+  RNP_KEY_EXPORT_SUBKEYS = (1 << 3)
 
   RNP_LOAD_SAVE_PUBLIC_KEYS = (1 << 0)
   RNP_LOAD_SAVE_SECRET_KEYS = (1 << 1)
 
   RNP_JSON_PUBLIC_MPIS = (1 << 0)