Upgrade Coderay to 0.9.0.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@3014 e93f8b46-1217-0410-a6f0-8f06a7374b81

vendor/plugins/coderay-0.9.0/lib/term/ansicolor.rb

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+# = Term::ANSIColor - ANSI escape sequences in Ruby
+#
+# == Description
+#
+# This library can be used to color/uncolor strings using ANSI escape sequences.
+#
+# == Author
+#
+# Florian Frank mailto:flori@ping.de
+#
+# == License
+#
+# This is free software; you can redistribute it and/or modify it under the
+# terms of the GNU General Public License Version 2 as published by the Free
+# Software Foundation: www.gnu.org/copyleft/gpl.html
+#
+# == Download
+#
+# The latest version of this library can be downloaded at
+#
+# * http://rubyforge.org/frs?group_id=391
+#
+# The homepage of this library is located at
+#
+# * http://term-ansicolor.rubyforge.org
+#
+# == Examples
+# 
+# The file examples/example.rb in the source/gem-distribution shows how
+# this library can be used:
+#  require 'term/ansicolor'
+#  
+#  # Use this trick to work around namespace cluttering that
+#  # happens if you just include Term::ANSIColor:
+#  
+#  class Color
+#    class << self
+#      include Term::ANSIColor
+#    end
+#  end
+#  
+#  print Color.red, Color.bold, "No Namespace cluttering:", Color.clear, "\n"
+#  print Color.green + "green" + Color.clear, "\n"
+#  print Color.on_red(Color.green("green")), "\n"
+#  print Color.yellow { Color.on_black { "yellow on_black" } }, "\n\n"
+#  
+#  # Or shortcut Term::ANSIColor by assignment:
+#  c = Term::ANSIColor
+#  
+#  print c.red, c.bold, "No Namespace cluttering (alternative):", c.clear, "\n"
+#  print c.green + "green" + c.clear, "\n"
+#  print c.on_red(c.green("green")), "\n"
+#  print c.yellow { c.on_black { "yellow on_black" } }, "\n\n"
+#  
+#  # Anyway, I don't define any of Term::ANSIColor's methods in this example
+#  # and I want to keep it short:
+#  include Term::ANSIColor
+#  
+#  print red, bold, "Usage as constants:", reset, "\n"
+#  print clear, "clear", reset, reset, "reset", reset,
+#    bold, "bold", reset, dark, "dark", reset,
+#    underscore, "underscore", reset, blink, "blink", reset,
+#    negative, "negative", reset, concealed, "concealed", reset, "|\n",
+#    black, "black", reset, red, "red", reset, green, "green", reset,
+#    yellow, "yellow", reset, blue, "blue", reset, magenta, "magenta", reset,
+#    cyan, "cyan", reset, white, "white", reset, "|\n",
+#    on_black, "on_black", reset, on_red, "on_red", reset,
+#    on_green, "on_green", reset, on_yellow, "on_yellow", reset,
+#    on_blue, "on_blue", reset, on_magenta, "on_magenta", reset,
+#    on_cyan, "on_cyan", reset, on_white, "on_white", reset, "|\n\n"
+#  
+#  print red, bold, "Usage as unary argument methods:", reset, "\n"
+#  print clear("clear"), reset("reset"), bold("bold"), dark("dark"),
+#    underscore("underscore"), blink("blink"), negative("negative"),
+#    concealed("concealed"), "|\n",
+#    black("black"), red("red"), green("green"), yellow("yellow"),
+#    blue("blue"), magenta("magenta"), cyan("cyan"), white("white"), "|\n",
+#    on_black("on_black"), on_red("on_red"), on_green("on_green"),#
+#    on_yellow("on_yellow"), on_blue("on_blue"), on_magenta("on_magenta"),
+#    on_cyan("on_cyan"), on_white("on_white"), "|\n\n"
+#  
+#  print red { bold { "Usage as block forms:" } }, "\n"
+#  print clear { "clear" }, reset { "reset" }, bold { "bold" },
+#    dark { "dark" }, underscore { "underscore" }, blink { "blink" },
+#    negative { "negative" }, concealed { "concealed" }, "|\n",
+#    black { "black" }, red { "red" }, green { "green" },
+#    yellow { "yellow" }, blue { "blue" }, magenta { "magenta" },
+#    cyan { "cyan" }, white { "white" }, "|\n",
+#    on_black { "on_black" }, on_red { "on_red" }, on_green { "on_green" },
+#    on_yellow { "on_yellow" }, on_blue { "on_blue" },
+#    on_magenta { "on_magenta" }, on_cyan { "on_cyan" },
+#    on_white { "on_white" }, "|\n\n"
+#  
+#  # Usage as Mixin into String or its Subclasses
+#  class String
+#    include Term::ANSIColor
+#  end
+#  
+#  print "Usage as String Mixins:".red.bold, "\n"
+#  print "clear".clear, "reset".reset, "bold".bold, "dark".dark,
+#    "underscore".underscore, "blink".blink, "negative".negative,
+#    "concealed".concealed, "|\n",
+#    "black".black, "red".red, "green".green, "yellow".yellow,
+#    "blue".blue, "magenta".magenta, "cyan".cyan, "white".white, "|\n",
+#    "on_black".on_black, "on_red".on_red, "on_green".on_green,
+#    "on_yellow".on_yellow, "on_blue".on_blue, "on_magenta".on_magenta,
+#    "on_cyan".on_cyan, "on_white".on_white, "|\n\n"
+#  
+#  symbols = Term::ANSIColor::attributes
+#  print red { bold { "All supported attributes = " } },
+#    blue { symbols.inspect }, "\n\n"
+#  
+#  print "Send symbols to strings:".send(:red).send(:bold), "\n"
+#  print symbols[12, 8].map { |c| c.to_s.send(c) }, "\n\n"
+#  
+#  print red { bold { "Make strings monochromatic again:" } }, "\n"
+#  print [ "red".red, "not red anymore".red.uncolored,
+#    uncolored { "not red anymore".red }, uncolored("not red anymore".red)
+#      ].map { |x| x + "\n" }
+module Term
+  # The ANSIColor module can be used for namespacing and mixed into your own
+  # classes.
+  module ANSIColor
+    # :stopdoc:
+    ATTRIBUTES = [
+      [ :clear        ,   0 ], 
+      [ :reset        ,   0 ],     # synonym for :clear
+      [ :bold         ,   1 ], 
+      [ :dark         ,   2 ], 
+      [ :italic       ,   3 ],     # not widely implemented
+      [ :underline    ,   4 ], 
+      [ :underscore   ,   4 ],     # synonym for :underline
+      [ :blink        ,   5 ], 
+      [ :rapid_blink  ,   6 ],     # not widely implemented
+      [ :negative     ,   7 ],     # no reverse because of String#reverse
+      [ :concealed    ,   8 ], 
+      [ :strikethrough,   9 ],     # not widely implemented
+      [ :black        ,  30 ], 
+      [ :red          ,  31 ], 
+      [ :green        ,  32 ], 
+      [ :yellow       ,  33 ], 
+      [ :blue         ,  34 ], 
+      [ :magenta      ,  35 ], 
+      [ :cyan         ,  36 ], 
+      [ :white        ,  37 ], 
+      [ :on_black     ,  40 ], 
+      [ :on_red       ,  41 ], 
+      [ :on_green     ,  42 ], 
+      [ :on_yellow    ,  43 ], 
+      [ :on_blue      ,  44 ], 
+      [ :on_magenta   ,  45 ], 
+      [ :on_cyan      ,  46 ], 
+      [ :on_white     ,  47 ], 
+    ]
+
+    ATTRIBUTE_NAMES = ATTRIBUTES.transpose.first
+    # :startdoc:
+
+    # Returns true, if the coloring function of this module
+    # is switched on, false otherwise.
+    def self.coloring?
+      @coloring
+    end
+
+    # Turns the coloring on or off globally, so you can easily do
+    # this for example:
+    #  Term::ANSIColor::coloring = STDOUT.isatty
+    def self.coloring=(val)
+      @coloring = val
+    end
+    self.coloring = true
+
+    ATTRIBUTES.each do |c, v|
+      eval %Q{
+          def #{c}(string = nil)
+            result = ''
+            result << "\e[#{v}m" if Term::ANSIColor.coloring?
+            if block_given?
+              result << yield
+            elsif string
+              result << string
+            elsif respond_to?(:to_str)
+              result << self
+            else
+              return result #only switch on
+            end
+            result << "\e[0m" if Term::ANSIColor.coloring?
+            result
+          end
+      }
+    end
+
+    # Regular expression that is used to scan for ANSI-sequences while
+    # uncoloring strings.
+    COLORED_REGEXP = /\e\[([34][0-7]|[0-9])m/
+
+    # Returns an uncolored version of the string, that is all
+    # ANSI-sequences are stripped from the string.
+    def uncolored(string = nil) # :yields:
+      if block_given?
+        yield.gsub(COLORED_REGEXP, '')
+      elsif string
+        string.gsub(COLORED_REGEXP, '')
+      elsif respond_to?(:to_str)
+        gsub(COLORED_REGEXP, '')
+      else
+        ''
+      end
+    end
+
+    module_function
+
+    # Returns an array of all Term::ANSIColor attributes as symbols.
+    def attributes
+      ATTRIBUTE_NAMES
+    end
+    extend self
+  end
+end
+    # vim: set et sw=2 ts=2: