iterm stuff added to tree (and trackable)

iterm2colors/tools/preview.rb

@@ -0,0 +1,76 @@
+#!/usr/bin/ruby
+#
+# Applies the colors defined in .itermcolors file to the current session using
+# proprietary escape codes of iTerm2
+#
+# Author: Junegunn Choi <https://github.com/junegunn> Reference:
+# https://iterm2.com/documentation-escape-codes.html
+
+require 'rexml/document'
+require 'io/console'
+
+files = ARGV.select { |f| File.exists? f }
+if files.empty?
+  puts "usage: #$0 <itermcolors files...>"
+  exit 1
+end
+
+if ENV.has_key? 'TMUX'
+  puts 'Does not work on tmux'
+  exit 1
+end
+
+preview = files.length > 1
+history = []
+until files.empty?
+  file = files.shift
+  print "[#{File.basename file, '.*'}] " if preview
+  begin
+    colors = {}
+    root = REXML::Document.new(File.read file).root
+    root.elements['dict'].select { |e| e.is_a? REXML::Element }.each do |dict|
+      if dict.previous_element && !dict.previous_element.text.strip.empty?
+        type = dict.previous_element.text.downcase.gsub(/^ansi\s+|\s+color$/, '')
+        colors[type] = {}
+      end
+      next unless type
+
+      dict.elements.each_slice(2) do |elems|
+        key = val = nil
+        elems.each do |elem|
+          case elem.name.downcase
+          when 'key'  then key = elem.text
+          when 'real' then val = elem.text
+          end
+        end
+        colors[type][key.sub(/\s.+/, '').downcase.to_sym] =
+          '%02x' % [255, val.to_f.*(256).to_i].min if key && val
+      end
+      colors[type] &&= colors[type].values_at(:red, :green, :blue).join
+    end
+
+    colors.each do |type, rgb|
+      print "\e]P" << {
+        'foreground'    => 'g',
+        'background'    => 'h',
+        'bold'          => 'i',
+        'selection'     => 'j',
+        'selected text' => 'k',
+        'cursor'        => 'l',
+        'cursor text'   => 'm',
+      }.fetch(type, '%x' % type.to_i) << rgb << "\e\\"
+    end
+    case IO.console.getch.ord
+    when 127   # backspace
+      files.unshift *[history.pop, file].compact
+    when 3, 27 # ctrl-c, esc
+      break
+    else
+      history << file
+    end
+  rescue Exception
+    print '(X) '
+  end
+end
+puts if preview
+