generic_erb.rb: highlight

* tool/generic_erb.rb: highlight result messages too.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52213 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

tool/generic_erb.rb

@@ -10,25 +10,38 @@ timestamp = nil
 output = nil
 ifchange = nil
 source = false
+color = nil
 
 opt = OptionParser.new do |o|
   o.on('-t', '--timestamp[=PATH]') {|v| timestamp = v || true}
   o.on('-o', '--output=PATH') {|v| output = v}
   o.on('-c', '--[no-]if-change') {|v| ifchange = v}
   o.on('-x', '--source') {source = true}
+  o.on('--color') {color = true}
   vpath.def_options(o)
   o.order!(ARGV)
 end
+unchanged = "unchanged"
+updated = "updated"
+if color or (color == nil && STDOUT.tty?)
+  if /\A(\e\[).*m\z/ =~ IO.popen("tput smso", "r", &:read)
+    beg = $1
+    colors = (colors = ENV['TEST_COLORS']) ? Hash[colors.scan(/(\w+)=([^:\n]*)/)] : {}
+    reset = "#{beg}m"
+    unchanged = "#{beg}#{colors["pass"] || "32;1"}m#{unchanged}#{reset}"
+    updated = "#{beg}#{colors["fail"] || "31;1"}m#{updated}#{reset}"
+  end
+end
 template = ARGV.shift or abort opt.to_s
 erb = ERB.new(File.read(template), nil, '%-')
 erb.filename = template
 result = source ? erb.src : erb.result
 if output
   if ifchange and (vpath.open(output, "rb") {|f| f.read} rescue nil) == result
-    puts "#{output} unchanged"
+    puts "#{output} #{unchanged}"
   else
     open(output, "wb") {|f| f.print result}
-    puts "#{output} updated"
+    puts "#{output} #{updated}"
   end
   if timestamp
     if timestamp == true