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require 'thor/shell/basic'
class Thor
module Shell
# Inherit from Thor::Shell::Basic and add set_color behavior. Check
# Thor::Shell::Basic to see all available methods.
#
class HTML < Basic
# The start of an HTML bold sequence.
BOLD = 'font-weight: bold'
# Set the terminal's foreground HTML color to black.
BLACK = 'color: black'
# Set the terminal's foreground HTML color to red.
RED = 'color: red'
# Set the terminal's foreground HTML color to green.
GREEN = 'color: green'
# Set the terminal's foreground HTML color to yellow.
YELLOW = 'color: yellow'
# Set the terminal's foreground HTML color to blue.
BLUE = 'color: blue'
# Set the terminal's foreground HTML color to magenta.
MAGENTA = 'color: magenta'
# Set the terminal's foreground HTML color to cyan.
CYAN = 'color: cyan'
# Set the terminal's foreground HTML color to white.
WHITE = 'color: white'
# Set the terminal's background HTML color to black.
ON_BLACK = 'background-color: black'
# Set the terminal's background HTML color to red.
ON_RED = 'background-color: red'
# Set the terminal's background HTML color to green.
ON_GREEN = 'background-color: green'
# Set the terminal's background HTML color to yellow.
ON_YELLOW = 'background-color: yellow'
# Set the terminal's background HTML color to blue.
ON_BLUE = 'background-color: blue'
# Set the terminal's background HTML color to magenta.
ON_MAGENTA = 'background-color: magenta'
# Set the terminal's background HTML color to cyan.
ON_CYAN = 'background-color: cyan'
# Set the terminal's background HTML color to white.
ON_WHITE = 'background-color: white'
# Set color by using a string or one of the defined constants. If a third
# option is set to true, it also adds bold to the string. This is based
# on Highline implementation and it automatically appends CLEAR to the end
# of the returned String.
#
def set_color(string, *colors)
if colors.all? { |color| color.is_a?(Symbol) || color.is_a?(String) }
html_colors = colors.map { |color| lookup_color(color) }
"<span style=\"#{html_colors.join("; ")};\">#{string}</span>"
else
color, bold = colors
html_color = self.class.const_get(color.to_s.upcase) if color.is_a?(Symbol)
styles = [html_color]
styles << BOLD if bold
"<span style=\"#{styles.join("; ")};\">#{string}</span>"
end
end
# Ask something to the user and receives a response.
#
# ==== Example
# ask("What is your name?")
#
# TODO: Implement #ask for Thor::Shell::HTML
def ask(statement, color = nil)
fail NotImplementedError, 'Implement #ask for Thor::Shell::HTML'
end
protected
def can_display_colors?
true
end
# Overwrite show_diff to show diff with colors if Diff::LCS is
# available.
#
def show_diff(destination, content) #:nodoc:
if diff_lcs_loaded? && ENV['THOR_DIFF'].nil? && ENV['RAILS_DIFF'].nil?
actual = File.binread(destination).to_s.split("\n")
content = content.to_s.split("\n")
Diff::LCS.sdiff(actual, content).each do |diff|
output_diff_line(diff)
end
else
super
end
end
def output_diff_line(diff) #:nodoc:
case diff.action
when '-'
say "- #{diff.old_element.chomp}", :red, true
when '+'
say "+ #{diff.new_element.chomp}", :green, true
when '!'
say "- #{diff.old_element.chomp}", :red, true
say "+ #{diff.new_element.chomp}", :green, true
else
say " #{diff.old_element.chomp}", nil, true
end
end
# Check if Diff::LCS is loaded. If it is, use it to create pretty output
# for diff.
#
def diff_lcs_loaded? #:nodoc:
return true if defined?(Diff::LCS)
return @diff_lcs_loaded unless @diff_lcs_loaded.nil?
@diff_lcs_loaded = begin
require 'diff/lcs'
true
rescue LoadError
false
end
end
end
end
end
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