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|
# frozen_string_literal: true
require "set"
require "dry/logger/constants"
require_relative "colors"
module Dry
module Logger
module Formatters
# Basic string formatter.
#
# This formatter returns log entries in key=value format.
#
# @since 1.0.0
# @api public
class Template
# @since 1.0.0
# @api private
TOKEN_REGEXP = /%<(\w*)>s/
# @since 1.0.0
# @api private
MESSAGE_TOKEN = "%<message>s"
# @since 1.0.0
# @api private
attr_reader :value
# @since 1.0.0
# @api private
attr_reader :tokens
# @since 1.0.0
# @api private
def self.[](value)
cache.fetch(value) {
cache[value] = (colorized?(value) ? Template::Colorized : Template).new(value)
}
end
# @since 1.0.0
# @api private
private_class_method def self.colorized?(value)
Colors::COLORS.keys.any? { |color| value.include?("<#{color}>") }
end
# @since 1.0.0
# @api private
private_class_method def self.cache
@cache ||= {}
end
# @since 1.0.0
# @api private
class Colorized < Template
# @since 1.0.0
# @api private
def initialize(value)
super(Colors.evaluate(value))
end
end
# @since 1.0.0
# @api private
def initialize(value)
@value = value
@tokens = value.scan(TOKEN_REGEXP).flatten(1).map(&:to_sym).to_set
end
# @since 1.0.0
# @api private
def %(tokens)
output = value % tokens
output.strip!
output.split(NEW_LINE).map(&:rstrip).join(NEW_LINE)
end
# @since 1.0.0
# @api private
def colorize(color, input)
"\e[#{Colors[color.to_sym]}m#{input}\e[0m"
end
# @since 1.0.0
# @api private
def include?(token)
tokens.include?(token)
end
end
end
end
end
|
