lib/ruby_jard/console.rb in ruby_jard-0.3.0 vs lib/ruby_jard/console.rb in ruby_jard-0.3.1

@@ -6,38 +6,66 @@
 
 module RubyJard
   # Wrapper for utilities to control screen
   class Console
     class << self
-      def start_alternative_terminal(output)
-        return unless output.tty?
+      def attachable?
+        return false unless output.tty?
 
-        output.print tput('smcup')
-      rescue RubyJard::Error
-        # If tput not found, fallback to hard-coded sequence.
-        output.print "\e[?1049h\e[22;0;0t"
+        width, height = screen_size(output)
+        width != 0 && height != 0
       end
 
-      def stop_alternative_terminal(output)
-        return unless output.tty?
+      def redirected?
+        output != $stdout
+      end
 
-        output.print tput('rmcup')
-      rescue RubyJard::Error
-        # If tput not found, fallback to hard-coded sequence.
-        output.print "\e[?1049l\e[23;0;0t"
+      def output
+        return @output if defined?(@output)
+
+        @output =
+          if STDOUT.tty?
+            STDOUT
+          else
+            begin
+              File.open('/dev/tty', 'w+')
+            rescue StandardError
+              STDOUT # Give up now.
+            end
+          end
       end
 
+      def input
+        return @input if defined?(@input)
+
+        @input =
+          if STDIN.tty?
+            STDIN
+          else
+            begin
+              File.open('/dev/tty', 'r+')
+            rescue StandardError
+              STDIN # Give up.
+            end
+          end
+      end
+
       def move_to(output, x, y)
         return unless output.tty?
 
         output.print format("\e[%<row>d;%<col>dH", row: y + 1, col: x + 1)
       end
 
       def screen_size(output)
         return [0, 0] unless output.tty?
 
-        [TTY::Screen.width, TTY::Screen.height]
+        if output.respond_to?(:winsize)
+          height, width = output.winsize
+          [width, height]
+        else
+          [TTY::Screen.width, TTY::Screen.height]
+        end
       end
 
       def clear_screen(output)
         return unless output.tty?
 
@@ -48,20 +76,20 @@
         return unless output.tty?
 
         output.print "\e[0J"
       end
 
-      def disable_cursor!(output = STDOUT)
+      def disable_cursor!(output)
         return unless output.tty?
 
         output.print tput('civis')
       rescue RubyJard::Error
         # If tput not found, fallback to hard-coded sequence.
         output.print "\e[?25l"
       end
 
-      def enable_cursor!(output = STDOUT)
+      def enable_cursor!(output)
         return unless output.tty?
 
         output.print tput('cnorm')
       rescue RubyJard::Error
         # If tput not found, fallback to hard-coded sequence.
@@ -79,42 +107,42 @@
         end
       rescue IO::WaitWritable
         nil
       end
 
-      def raw!(output = STDOUT)
+      def raw!(output)
         return unless output.tty?
 
         begin
           output.raw!
         rescue StandardError
           stty('raw')
         end
       end
 
-      def cooked!(output = STDOUT)
+      def cooked!(output)
         return unless output.tty?
 
         begin
           output.cooked!
         rescue StandardError
           # If stty not found, or raise error, nothing I can do
           stty('-raw')
         end
       end
 
-      def disable_echo!(output = STDOUT)
+      def disable_echo!(output)
         return unless output.tty?
 
         begin
           output.echo = false
         rescue StandardError
           # If stty not found, or raise error, nothing I can do
           stty('-echo')
         end
       end
 
-      def enable_echo!(output = STDOUT)
+      def enable_echo!(output)
         return unless output.tty?
 
         begin
           output.echo = true
         rescue StandardError