Class: DInstaller::CmdlineArgs

Inherits:
Object
  • Object
show all
Defined in:
lib/dinstaller/cmdline_args.rb

Overview

This class is responsible for reading DInstaller kernel cmdline options

Constant Summary collapse

CMDLINE_PATH = 
"/proc/cmdline"
CMDLINE_PREFIX = 
"dinst."

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(data = {}) ⇒ CmdlineArgs

Constructor

Parameters:

  • data (Hash) (defaults to: {}) 


34
35
36
 
# File 'lib/dinstaller/cmdline_args.rb', line 34

def initialize(data = {})
  @data = data
end

Instance Attribute Details

#config_url ⇒ Object

Returns the value of attribute config_url.



28
29
30
 
# File 'lib/dinstaller/cmdline_args.rb', line 28

def config_url
  @config_url
end

#data ⇒ Object (readonly)

Returns the value of attribute data.



29
30
31
 
# File 'lib/dinstaller/cmdline_args.rb', line 29

def data
  @data
end

Class Method Details

.read_from(path) ⇒ Object

Reads the kernel command line options



39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
 
# File 'lib/dinstaller/cmdline_args.rb', line 39

def self.read_from(path)
  options = File.read(path)
  args = new({})

  options.split.each do |option|
    next unless option.start_with?(CMDLINE_PREFIX)

    key, value = option.split("=")
    key.gsub!(CMDLINE_PREFIX, "")
    # Omit config_url from Config options
    next args.config_url = value if key == "config_url"

    # TODO: Add some kind of schema or 'knowledge' of attribute types to convert them properly
    # by now we will just convert Boolean values
    value = normalize(value)
    if key.include?(".")
      section, key = key.split(".")
      args.data[section] = {} unless args.data.keys.include?(section)
      args.data[section][key] = value
    else
      args.data[key.gsub(CMDLINE_PREFIX, "")] = value
    end
  end

  args
end