compass/lib/compass/logger.rb

104 lines
2.3 KiB
Ruby

module Compass
class Logger
DEFAULT_ACTIONS = [:directory, :exists, :remove, :create, :overwrite, :compile, :error, :identical, :warning]
COLORS = { :clear => 0, :red => 31, :green => 32, :yellow => 33 }
ACTION_COLORS = {
:error => :red,
:warning => :yellow,
:compile => :green,
:overwrite => :yellow,
:create => :green,
:remove => :yellow,
:exists => :green,
:directory => :green,
:identical => :green,
:convert => :green,
:unchanged => :yellow
}
attr_accessor :actions, :options
def initialize(*actions)
self.options = actions.last.is_a?(Hash) ? actions.pop : {}
@actions = DEFAULT_ACTIONS.dup
@actions += actions
end
# Record an action that has occurred
def record(action, *arguments)
msg = ""
msg << color(ACTION_COLORS[action]) if Compass.configuration.color_output
msg << "#{action_padding(action)}#{action}"
msg << color(:clear) if Compass.configuration.color_output
msg << " #{arguments.join(' ')}"
log msg
end
def red
$stderr.write(color(:red))
$stdout.write(color(:red))
yield
ensure
$stderr.write(color(:clear))
$stdout.write(color(:clear))
end
def yellow
$stderr.write(color(:yellow))
$stdout.write(color(:yellow))
yield
ensure
$stderr.write(color(:clear))
$stdout.write(color(:clear))
end
def color(c)
if Compass.configuration.color_output && c && COLORS.has_key?(c.to_sym)
if defined?($boring) && $boring
""
else
"\e[#{COLORS[c.to_sym]}m"
end
else
""
end
end
def emit(msg)
print msg
end
# Emit a log message
def log(msg)
puts msg
end
# add padding to the left of an action that was performed.
def action_padding(action)
' ' * [(max_action_length - action.to_s.length), 0].max
end
# the maximum length of all the actions known to the logger.
def max_action_length
@max_action_length ||= actions.inject(0){|memo, a| [memo, a.to_s.length].max}
end
end
class NullLogger
def record(*args)
end
def log(msg)
end
def red
yield
end
end
end