Class: ColorTail::Options

Inherits:
Hash
  • Object
show all
Defined in:
lib/colortail/configuration.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(args) ⇒ Options

Returns a new instance of Options.



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# File 'lib/colortail/configuration.rb', line 53

def initialize(args)
    super()

    user_home = ENV['HOME']

    @orig_args = args.clone

    options = {}
    
    require 'optparse'
    @opts = OptionParser.new do |o|
        o.banner = "Usage: #{File.basename($0)} <file1> <file2> ..."
    
        options[:group] = 'default'
        o.on( '-g', '--group <group>', 'Specify the color grouping to use for these files' ) do |group|
            options[:group] = group
        end
        
        options[:filename_prefix] = false
        o.on( '-F', '--filename_prefix', 'Prefix each colored line with it\'s filename') do
            options[:filename_prefix] = true
        end

        options[:list] = false
        o.on( '-l', '--list', 'List all the available color groupings' ) do |group|
            options[:list] = true
        end

        o.separator ""
    
        options[:conf] = "#{user_home}/.colortailrc"
        o.on( '-c', '--conf <file>', 'Specify an alternate config file' ) do |file|
            if File.exists?(file)
                options[:conf] = file
            else
                raise FileDoesNotExist, "Config file #{file} cannot be found."
            end
        end
        
        o.on('-V', '--version', "Display version information") do
            options[:version] = true
        end

        options[:help] = false
        o.on( '-h', '--help', 'Display this help screen' ) do
            options[:help] = true
        end
        
        o.separator ""
        o.separator "Examples:"
        o.separator "  Tail messages and mail log through STDIN with syslog group:"
        o.separator "    cat /var/log/maillog | #{File.basename($0)} -g syslog /var/log/messages"

        o.separator "  Tail messages with syslog group and maillog with mail group:"
        o.separator "    #{File.basename($0)} /var/log/messages#syslog /var/log/messages#mail"

        o.separator "  Tail messages with syslog group and maillog with mail group with line prefix:"
        o.separator "    #{File.basename($0)} -F /var/log/messages#syslog /var/log/messages#mail"
    end

    begin
        @opts.parse!(args)
        self[:files] = args
        self[:options] = options
    rescue OptionParser::InvalidOption => e
        self[:invalid_argument] = e.message
        @opts.parse(args, flags={ :delete_invalid_opts => true })
        self[:files] = args
        self[:options] = options
    end
end

Instance Attribute Details

#opts ⇒ Object (readonly)

Returns the value of attribute opts.



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# File 'lib/colortail/configuration.rb', line 51

def opts
  @opts
end

#orig_args ⇒ Object (readonly)

Returns the value of attribute orig_args.



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# File 'lib/colortail/configuration.rb', line 51

def orig_args
  @orig_args
end