module HighLine::StringExtensions
HighLine extensions for String class. Included by HighLine::String.
Constants
- STYLE_METHOD_NAME_PATTERN
Public Class Methods
define_builtin_style_methods(base)
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At include time, it defines all basic builtin styles. @param base [Class, Module] base Class/Module
# File lib/highline/string_extensions.rb, line 95 def self.define_builtin_style_methods(base) HighLine::COLORS.each do |color| color = color.downcase base.class_eval <<-METHOD_DEFINITION undef :#{color} if method_defined? :#{color} def #{color} color(:#{color}) end METHOD_DEFINITION base.class_eval <<-METHOD_DEFINITION undef :on_#{color} if method_defined? :on_#{color} def on_#{color} on(:#{color}) end METHOD_DEFINITION HighLine::STYLES.each do |style| style = style.downcase base.class_eval <<-METHOD_DEFINITION undef :#{style} if method_defined? :#{style} def #{style} color(:#{style}) end METHOD_DEFINITION end end end
define_style_support_methods(base)
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At include time, it defines all basic style support method like color, on, uncolor, rgb, on_rgb and the method_missing callback @return [void] @param base [Class, Module] the base class/module
# File lib/highline/string_extensions.rb, line 28 def self.define_style_support_methods(base) base.class_eval do undef :color if method_defined? :color undef :foreground if method_defined? :foreground def color(*args) self.class.new(HighLine.color(self, *args)) end alias_method :foreground, :color undef :on if method_defined? :on def on(arg) color(("on_" + arg.to_s).to_sym) end undef :uncolor if method_defined? :uncolor def uncolor self.class.new(HighLine.uncolor(self)) end undef :rgb if method_defined? :rgb def rgb(*colors) color_code = setup_color_code(*colors) color("rgb_#{color_code}".to_sym) end undef :on_rgb if method_defined? :on_rgb def on_rgb(*colors) color_code = setup_color_code(*colors) color("on_rgb_#{color_code}".to_sym) end # @todo Chain existing method_missing? undef :method_missing if method_defined? :method_missing def method_missing(method, *_args) if method.to_s =~ STYLE_METHOD_NAME_PATTERN color(method) else super end end undef :respond_to_missing if method_defined? :respond_to_missing def respond_to_missing?(method_name, include_private = false) method_name.to_s =~ STYLE_METHOD_NAME_PATTERN || super end private def setup_color_code(*colors) color_code = colors.map do |color| if color.is_a?(Numeric) format("%02x", color) else color.to_s end end.join raise "Bad RGB color #{colors.inspect}" unless color_code =~ /^[a-fA-F0-9]{6}/ color_code end end end
included(base)
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Included hook. Actions to take when being included. @param base [Class, Module] base class
# File lib/highline/string_extensions.rb, line 17 def self.included(base) define_builtin_style_methods(base) define_style_support_methods(base) end
Public Instance Methods
color(*args)
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# File lib/highline/string_extensions.rb, line 32 def color(*args) self.class.new(HighLine.color(self, *args)) end
method_missing(method, *_args)
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Calls superclass method
# File lib/highline/string_extensions.rb, line 61 def method_missing(method, *_args) if method.to_s =~ STYLE_METHOD_NAME_PATTERN color(method) else super end end
on(arg)
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# File lib/highline/string_extensions.rb, line 38 def on(arg) color(("on_" + arg.to_s).to_sym) end
on_rgb(*colors)
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# File lib/highline/string_extensions.rb, line 54 def on_rgb(*colors) color_code = setup_color_code(*colors) color("on_rgb_#{color_code}".to_sym) end
respond_to_missing?(method_name, include_private = false)
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Calls superclass method
# File lib/highline/string_extensions.rb, line 70 def respond_to_missing?(method_name, include_private = false) method_name.to_s =~ STYLE_METHOD_NAME_PATTERN || super end
rgb(*colors)
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# File lib/highline/string_extensions.rb, line 48 def rgb(*colors) color_code = setup_color_code(*colors) color("rgb_#{color_code}".to_sym) end
setup_color_code(*colors)
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# File lib/highline/string_extensions.rb, line 76 def setup_color_code(*colors) color_code = colors.map do |color| if color.is_a?(Numeric) format("%02x", color) else color.to_s end end.join raise "Bad RGB color #{colors.inspect}" unless color_code =~ /^[a-fA-F0-9]{6}/ color_code end
uncolor()
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# File lib/highline/string_extensions.rb, line 43 def uncolor self.class.new(HighLine.uncolor(self)) end