output some test stuff for log chunks

play/log.rb

@@ -0,0 +1,64 @@
+puts 'progress on one same line (faster)'
+1.upto(200) do |i|
+  print "#{i}|"; sleep(0.025)
+end
+
+puts; puts
+puts 'progress on one same line (slower)'
+1.upto(20) do |i|
+  print "#{i}|"; sleep(0.5)
+end
+
+puts; puts
+puts 'separate lines (faster)'
+1.upto(100) do |i|
+  puts "line #{i}"; sleep(0.025)
+end
+
+puts; puts
+puts 'separate lines (faster)'
+1.upto(20) do |i|
+  puts "line #{i}"; sleep(0.5)
+end
+
+codes = {
+  fmt: {
+    nil => 'no format',
+    1 => 'bold',
+    3 => 'italic',
+    4 => 'underline',
+  },
+  fg: {
+    nil => 'no foreground',
+    30 => 'fg-black',
+    33 => 'fg-yellow',
+    90 => 'fg-grey',
+  },
+  bg: {
+    nil => 'no background',
+    40 => 'bg-black',
+    41 => 'bg-red',
+    42 => 'bg-green',
+    44 => 'bg-blue',
+    47 => 'bg-white'
+  }
+}
+
+puts; puts
+puts 'ansi'
+
+order  = [:bg, :fg, :fmt]
+keys   = codes[order[0]].keys.product(codes[order[1]].keys).product(codes[order[2]].keys)
+string = keys.map do |keys|
+  keys = keys.flatten
+  next if keys[0] == keys[1]
+  stuff  = order.zip(keys)
+  string = stuff.map { |type, key| codes[type][key] }.join(', ')
+  format = stuff.map { |type, key| "\033[#{key}m" if key }.compact.join
+  "#{format}#{string}\033[0m"
+end.compact.join("\n")
+
+string.scan(/.{1,50}/m).each do |chunk|
+  print chunk
+  sleep(0.1)
+end