diff options
Diffstat (limited to 'lib/bundler/vendor/thor/lib/thor/shell/color.rb')
| -rw-r--r-- | lib/bundler/vendor/thor/lib/thor/shell/color.rb | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/lib/bundler/vendor/thor/lib/thor/shell/color.rb b/lib/bundler/vendor/thor/lib/thor/shell/color.rb new file mode 100644 index 0000000000..da289cb50c --- /dev/null +++ b/lib/bundler/vendor/thor/lib/thor/shell/color.rb @@ -0,0 +1,149 @@ +require "bundler/vendor/thor/lib/thor/shell/basic" + +class Bundler::Thor + module Shell + # Inherit from Bundler::Thor::Shell::Basic and add set_color behavior. Check + # Bundler::Thor::Shell::Basic to see all available methods. + # + class Color < Basic + # Embed in a String to clear all previous ANSI sequences. + CLEAR = "\e[0m" + # The start of an ANSI bold sequence. + BOLD = "\e[1m" + + # Set the terminal's foreground ANSI color to black. + BLACK = "\e[30m" + # Set the terminal's foreground ANSI color to red. + RED = "\e[31m" + # Set the terminal's foreground ANSI color to green. + GREEN = "\e[32m" + # Set the terminal's foreground ANSI color to yellow. + YELLOW = "\e[33m" + # Set the terminal's foreground ANSI color to blue. + BLUE = "\e[34m" + # Set the terminal's foreground ANSI color to magenta. + MAGENTA = "\e[35m" + # Set the terminal's foreground ANSI color to cyan. + CYAN = "\e[36m" + # Set the terminal's foreground ANSI color to white. + WHITE = "\e[37m" + + # Set the terminal's background ANSI color to black. + ON_BLACK = "\e[40m" + # Set the terminal's background ANSI color to red. + ON_RED = "\e[41m" + # Set the terminal's background ANSI color to green. + ON_GREEN = "\e[42m" + # Set the terminal's background ANSI color to yellow. + ON_YELLOW = "\e[43m" + # Set the terminal's background ANSI color to blue. + ON_BLUE = "\e[44m" + # Set the terminal's background ANSI color to magenta. + ON_MAGENTA = "\e[45m" + # Set the terminal's background ANSI color to cyan. + ON_CYAN = "\e[46m" + # Set the terminal's background ANSI color to white. + ON_WHITE = "\e[47m" + + # 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. + # + # Pass foreground, background and bold options to this method as + # symbols. + # + # Example: + # + # set_color "Hi!", :red, :on_white, :bold + # + # The available colors are: + # + # :bold + # :black + # :red + # :green + # :yellow + # :blue + # :magenta + # :cyan + # :white + # :on_black + # :on_red + # :on_green + # :on_yellow + # :on_blue + # :on_magenta + # :on_cyan + # :on_white + def set_color(string, *colors) + if colors.compact.empty? || !can_display_colors? + string + elsif colors.all? { |color| color.is_a?(Symbol) || color.is_a?(String) } + ansi_colors = colors.map { |color| lookup_color(color) } + "#{ansi_colors.join}#{string}#{CLEAR}" + else + # The old API was `set_color(color, bold=boolean)`. We + # continue to support the old API because you should never + # break old APIs unnecessarily :P + foreground, bold = colors + foreground = self.class.const_get(foreground.to_s.upcase) if foreground.is_a?(Symbol) + + bold = bold ? BOLD : "" + "#{bold}#{foreground}#{string}#{CLEAR}" + end + end + + protected + + def can_display_colors? + stdout.tty? + 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 |