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Contents
# encoding: utf-8
require 'singleton'
module Nanoc::CLI
# Nanoc::CLI::Logger is a singleton class responsible for generating
# feedback in the terminal.
class Logger
# Maps actions (`:create`, `:update`, `:identical`, `:skip` and `:delete`)
# onto their ANSI color codes.
ACTION_COLORS = {
:create => "\e[32m", # green
:update => "\e[33m", # yellow
:identical => "", # (nothing)
:skip => "", # (nothing)
:delete => "\e[31m" # red
}
include Singleton
# Returns the log level, which can be :high, :low or :off (which will log
# all messages, only high-priority messages, or no messages at all,
# respectively).
#
# @return [Symbol] The log level
attr_accessor :level
def initialize
@level = :high
end
# Logs a file-related action.
#
# @param [:high, :low] level The importance of this action
#
# @param [:create, :update, :identical, :skip, :delete] action The kind of file action
#
# @param [String] name The name of the file the action was performed on
#
# @return [void]
def file(level, action, name, duration=nil)
log(
level,
'%s%12s%s %s%s' % [
ACTION_COLORS[action.to_sym],
action,
"\e[0m",
duration.nil? ? '' : "[%2.2fs] " % [ duration ],
name
]
)
end
# Logs a message.
#
# @param [:high, :low] level The importance of this message
#
# @param [String] message The message to be logged
#
# @param [#puts] io The stream to which the message should be written
#
# @return [void]
def log(level, message, io=$stdout)
# Don't log when logging is disabled
return if @level == :off
# Log when level permits it
io.puts(message) if (@level == :low or @level == level)
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems