Class: Nanoc::CLI::Logger Private

Inherits:
Object
  • Object
show all
Includes:
Singleton
Defined in:
lib/nanoc/cli/logger.rb

Overview

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

Nanoc::CLI::Logger is a singleton class responsible for generating feedback in the terminal.

Constant Summary collapse

ACTION_COLORS =

This constant is part of a private API. You should avoid using this constant if possible, as it may be removed or be changed in the future.

Maps actions (‘:create`, `:update`, `:identical`, `:cached`, `:skip` and `:delete`) onto their ANSI color codes.

{
  create: "\e[32m", # green
  update: "\e[33m", # yellow
  identical: '',    # (nothing)
  cached: '',       # (nothing)
  skip: '',         # (nothing)
  delete: "\e[31m", # red
}.freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Logger

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns a new instance of Logger.



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# File 'lib/nanoc/cli/logger.rb', line 30

def initialize
  @level = :high
  @mutex = Mutex.new
end

Instance Attribute Details

#level ⇒ Symbol

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

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).

Returns:

  • (Symbol) —

    The log level



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# File 'lib/nanoc/cli/logger.rb', line 28

def level
  @level
end

Instance Method Details

#file(level, action, name, duration = nil) ⇒ void

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

This method returns an undefined value.

Logs a file-related action.

Parameters:

  • level (:high, :low) —

    The importance of this action

  • action (:create, :update, :identical, :cached, :skip, :delete) —

    The kind of file action

  • name (String) —

    The name of the file the action was performed on



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# File 'lib/nanoc/cli/logger.rb', line 44

def file(level, action, name, duration = nil)
  log(
    level,
    format(
      '%s%12s%s  %s%s',
      ACTION_COLORS[action.to_sym],
      action,
      "\e[0m",
      duration.nil? ? '' : format('[%2.2fs]  ', duration),
      name,
    ),
  )
end

#log(level, message, io = $stdout) ⇒ void

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

This method returns an undefined value.

Logs a message.

Parameters:

  • level (:high, :low) —

    The importance of this message

  • message (String) —

    The message to be logged

  • io (#puts) (defaults to: $stdout) —

    The stream to which the message should be written



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# File 'lib/nanoc/cli/logger.rb', line 67

def log(level, message, io = $stdout)
  return if @level == :off
  return if @level != :low && @level != level

  @mutex.synchronize do
    io.puts(message)
  end
end