add tag v1_9_3_426

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/tags/v1_9_3_426@40733 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 142 insertions, 0 deletions

diff --git a/ruby_1_9_3/lib/irb/input-method.rb b/ruby_1_9_3/lib/irb/input-method.rb
new file mode 100644
index 0000000000..7227df4ca0
--- /dev/null
+++ b/ruby_1_9_3/lib/irb/input-method.rb
@@ -0,0 +1,142 @@
+#
+#   irb/input-method.rb - input methods used irb
+#   	$Release Version: 0.9.6$
+#   	$Revision$
+#   	by Keiju ISHITSUKA(keiju@ruby-lang.org)
+#
+# --
+#
+#
+#
+require 'irb/src_encoding'
+require 'irb/magic-file'
+
+module IRB
+  #
+  # InputMethod
+  #	StdioInputMethod
+  #	FileInputMethod
+  #	(ReadlineInputMethod)
+  #
+  STDIN_FILE_NAME = "(line)"
+  class InputMethod
+    @RCS_ID='-$Id$-'
+
+    def initialize(file = STDIN_FILE_NAME)
+      @file_name = file
+    end
+    attr_reader :file_name
+
+    attr_accessor :prompt
+
+    def gets
+      IRB.fail NotImplementedError, "gets"
+    end
+    public :gets
+
+    def readable_atfer_eof?
+      false
+    end
+  end
+
+  class StdioInputMethod < InputMethod
+    def initialize
+      super
+      @line_no = 0
+      @line = []
+      @stdin = IO.open(STDIN.to_i, :external_encoding => IRB.conf[:LC_MESSAGES].encoding, :internal_encoding => "-")
+      @stdout = IO.open(STDOUT.to_i, 'w', :external_encoding => IRB.conf[:LC_MESSAGES].encoding, :internal_encoding => "-")
+    end
+
+    def gets
+      print @prompt
+      line = @stdin.gets
+      @line[@line_no += 1] = line
+    end
+
+    def eof?
+      @stdin.eof?
+    end
+
+    def readable_atfer_eof?
+      true
+    end
+
+    def line(line_no)
+      @line[line_no]
+    end
+
+    def encoding
+      @stdin.external_encoding
+    end
+  end
+
+  class FileInputMethod < InputMethod
+    def initialize(file)
+      super
+      @io = IRB::MagicFile.open(file)
+    end
+    attr_reader :file_name
+
+    def eof?
+      @io.eof?
+    end
+
+    def gets
+      print @prompt
+      l = @io.gets
+#      print @prompt, l
+      l
+    end
+
+    def encoding
+      @io.external_encoding
+    end
+  end
+
+  begin
+    require "readline"
+    class ReadlineInputMethod < InputMethod
+      include Readline
+      def initialize
+	super
+
+	@line_no = 0
+	@line = []
+	@eof = false
+
+	@stdin = IO.open(STDIN.to_i, :external_encoding => IRB.conf[:LC_MESSAGES].encoding, :internal_encoding => "-")
+	@stdout = IO.open(STDOUT.to_i, 'w', :external_encoding => IRB.conf[:LC_MESSAGES].encoding, :internal_encoding => "-")
+      end
+
+      def gets
+        Readline.input = @stdin
+        Readline.output = @stdout
+	if l = readline(@prompt, false)
+	  HISTORY.push(l) if !l.empty?
+	  @line[@line_no += 1] = l + "\n"
+	else
+	  @eof = true
+	  l
+	end
+      end
+
+      def eof?
+	@eof
+      end
+
+      def readable_atfer_eof?
+	true
+      end
+
+      def line(line_no)
+	@line[line_no]
+      end
+
+      def encoding
+	@stdin.external_encoding
+      end
+    end
+  rescue LoadError
+  end
+end