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module Compass
class Logger
COLORS = { :clear => 0, :red => 31, :green => 32, :yellow => 33, :blue => 34 }
ACTION_COLORS = {
:error => :red,
:warning => :yellow,
:info => :green,
:compile => :green,
:overwrite => :yellow,
:modified => :yellow,
:clean => :yellow,
:write => :green,
:create => :green,
:remove => :yellow,
:delete => :yellow,
:deleted => :yellow,
:created => :yellow,
:exists => :green,
:directory => :green,
:identical => :green,
:convert => :green,
:unchanged => :yellow
}
DEFAULT_ACTIONS = ACTION_COLORS.keys
ACTION_CAN_BE_QUIET = {
:error => false,
:warning => true,
:info => true,
:compile => true,
:overwrite => true,
:modified => true,
:clean => true,
:write => true,
:create => true,
:remove => true,
:delete => true,
:deleted => true,
:created => true,
:exists => true,
:directory => true,
:identical => true,
:convert => true,
:unchanged => true
}
attr_accessor :actions, :options, :time
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)
return if options[:quiet] && ACTION_CAN_BE_QUIET[action]
msg = ""
if time
msg << Time.now.strftime("%I:%M:%S.%3N %p")
end
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 green
wrap(:green) { yield }
end
def red
wrap(:red) { yield }
end
def yellow
wrap(:yellow) { yield }
end
def wrap(c, reset_to = :clear)
$stderr.write(color(c))
$stdout.write(color(c))
yield
ensure
$stderr.write(color(reset_to))
$stdout.write(color(reset_to))
$stdout.flush
end
def color(c)
if Compass.configuration.color_output && c && COLORS.has_key?(c.to_sym)
if defined?($boring) && $boring
""
else
"\e[#{COLORS[c.to_sym]}m"
end
else
""
end
end
# Emit a log message without a trailing newline
def emit(msg)
print msg
$stdout.flush
end
# Emit a log message with a trailing newline
def log(msg)
puts msg
$stdout.flush
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 < Logger
def record(*args)
end
def log(msg)
end
def emit(msg)
end
end
end
|
