Class: YAMLCommand::Command::ViewCommand

Inherits:
YAMLCommand::Command show all
Defined in:
lib/yaml_command/view.rb

Overview

Display YAML file with color highlighting.

This command requires the ANSI gem be installed.

Instance Attribute Summary

Attributes inherited from YAMLCommand::Command

#file

Instance Method Summary collapse

Methods inherited from YAMLCommand::Command

command_name, #debug=, #debug?, #h!, #help!, #inspect=, #inspect?, #json=, #json?, #mute=, #mute?, #yaml=, #yaml?

Instance Method Details

#call(path = nil) ⇒ Object

Invoke view command.



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# File 'lib/yaml_command/view.rb', line 20

def call(path=nil)
  require 'ansi'

  colon = ":".ansi(:magenta)

  if path
    text = File.read(path)
  else
    if file
      text = File.read(file)
    else
      text = $stdin.read
    end
  end

  # Make sure it is valid YAML.
  YAML.load(text)

  text.each_line do |line|
    case line
    when /^---/
      print line
    when /^(\s*\-)(.*?)$/
      puts "%s%s" % [$1.ansi(:magenta), $2]
    when /^(\s*\w+)\:(.*?)$/
      puts "%s%s%s" % [$1.ansi(:cyan), colon, $2]
    else
      print line
    end
  end
end