lib/json/pure.rb in json_pure-1.4.6 vs lib/json/pure.rb in json_pure-1.5.0

@@ -1,77 +1,15 @@
 require 'json/common'
 require 'json/pure/parser'
 require 'json/pure/generator'
 
 module JSON
-  begin
-    require 'iconv'
-    # An iconv instance to convert from UTF8 to UTF16 Big Endian.
-    UTF16toUTF8 = Iconv.new('utf-8', 'utf-16be') # :nodoc:
-    # An iconv instance to convert from UTF16 Big Endian to UTF8.
-    UTF8toUTF16 = Iconv.new('utf-16be', 'utf-8') # :nodoc:
-    UTF8toUTF16.iconv('no bom')
-  rescue LoadError
-    raise MissingUnicodeSupport,
-      "iconv couldn't be loaded, which is required for UTF-8/UTF-16 conversions"
-  rescue Errno::EINVAL, Iconv::InvalidEncoding
-    # Iconv doesn't support big endian utf-16. Let's try to hack this manually
-    # into the converters.
-    begin
-      old_verbose, $VERBSOSE = $VERBOSE, nil
-      # An iconv instance to convert from UTF8 to UTF16 Big Endian.
-      UTF16toUTF8 = Iconv.new('utf-8', 'utf-16') # :nodoc:
-      # An iconv instance to convert from UTF16 Big Endian to UTF8.
-      UTF8toUTF16 = Iconv.new('utf-16', 'utf-8') # :nodoc:
-      UTF8toUTF16.iconv('no bom')
-      if UTF8toUTF16.iconv("\xe2\x82\xac") == "\xac\x20"
-        swapper = Class.new do
-          def initialize(iconv) # :nodoc:
-            @iconv = iconv
-          end
-
-          def iconv(string) # :nodoc:
-            result = @iconv.iconv(string)
-            JSON.swap!(result)
-          end
-        end
-        UTF8toUTF16 = swapper.new(UTF8toUTF16) # :nodoc:
-      end
-      if UTF16toUTF8.iconv("\xac\x20") == "\xe2\x82\xac"
-        swapper = Class.new do
-          def initialize(iconv) # :nodoc:
-            @iconv = iconv
-          end
-
-          def iconv(string) # :nodoc:
-            string = JSON.swap!(string.dup)
-            @iconv.iconv(string)
-          end
-        end
-        UTF16toUTF8 = swapper.new(UTF16toUTF8) # :nodoc:
-      end
-    rescue Errno::EINVAL, Iconv::InvalidEncoding
-      raise MissingUnicodeSupport, "iconv doesn't seem to support UTF-8/UTF-16 conversions"
-    ensure
-      $VERBOSE = old_verbose
-    end
-  end
-
-  # Swap consecutive bytes of _string_ in place.
-  def self.swap!(string) # :nodoc:
-    0.upto(string.size / 2) do |i|
-      break unless string[2 * i + 1]
-      string[2 * i], string[2 * i + 1] = string[2 * i + 1], string[2 * i]
-    end
-    string
-  end
-
   # This module holds all the modules/classes that implement JSON's
   # functionality in pure ruby.
   module Pure
-    $DEBUG and warn "Using pure library for JSON."
+    $DEBUG and warn "Using Pure library for JSON."
     JSON.parser = Parser
     JSON.generator = Generator
   end
 
-  JSON_LOADED = true
+  JSON_LOADED = true unless defined?(::JSON::JSON_LOADED)
 end