add eina_hash + specs

1 files changed, 81 insertions, 0 deletions

diff --git a/lib/efl/eina/eina_hash.rb b/lib/efl/eina/eina_hash.rb
new file mode 100644
index 0000000..76cd5d2
--- /dev/null
+++ b/lib/efl/eina/eina_hash.rb
@@ -0,0 +1,81 @@
+#! /usr/bin/env ruby
+# -*- coding: UTF-8 -*-
+#
+require 'efl/eina'
+require 'efl/ffi/eina/eina_hash'
+#
+class Hash
+    def self.from_eina_hash o
+        if o.is_a? Efl::Eina::EinaHash
+            o.to_h
+        elsif o.is_a? ::FFI::Pointer
+            Efl::Eina::EinaHash.new(o).to_h
+        else
+            raise ArgumentError.new " wrong argument #{o.class.name}"
+        end
+    end
+end
+module Efl
+    module Eina
+        #
+        class EinaHash
+            include Efl::Helper
+            include Enumerable
+            @func_prefixes = [ 'eina_hash_' ].freeze
+            def initialize o=nil, &block
+                cstr = ( block_given? ? block : Proc.new { Efl::FFI.eina_hash_string_djb2_new ::FFI::Pointer::NULL } )
+                @ptr = (
+                    case o
+                    when ::FFI::Pointer
+                        ( o==::FFI::Pointer::NULL ? cstr.call : o )
+                    when NilClass
+                        cstr.call
+                    when self.class
+                        o.ptr
+                    when Hash
+                        ptr = cstr.call
+                        o.each do |k,v| Efl::FFI.eina_hash_add ptr, k, v end
+                        ptr
+                    else
+                        raise ArgumentError.new "#{ptr.class} valid argument"
+                    end
+                )
+            end
+            def free
+                return if @ptr==::FFI::Pointer::NULL
+                @ptr = Efl::FFI.eina_hash_free @ptr
+            end
+            def each data=::FFI::Pointer::NULL, &block
+                return if not block_given?
+                Efl::FFI::eina_hash_foreach @ptr, Proc.new{|h,k,v,d| block.call(k,v) }, data
+            end
+            def to_h
+                 rh = {}
+                 each { |k,v| rh[k]=v; true }
+                 rh
+            end
+            def to_h_conv &block
+                 rh = {}
+                 if block_given?
+                    each { |k,v| rh[block.call(k)]=v; true }
+                 else
+                    each { |k,v| rh[k.read_string]=v; true }
+                 end
+                 rh
+            end
+            # for fun and tests
+            def add k, v
+                Efl::FFI.eina_hash_add @ptr, k, v
+                v
+            end
+            alias :[]= :add
+            def find k
+                r = Efl::FFI.eina_hash_find @ptr, k
+                return ( r==::FFI::Pointer::NULL ? nil : r )
+            end
+            alias :[] :find
+        end
+    end
+end
+#
+# EOF