Class: Linux::Lxc

Inherits:
Object
  • Object
show all
Defined in:
lib/linux/lxc.rb,
lib/linux/lxc/version.rb

Defined Under Namespace

Classes: Line, Lines

Constant Summary collapse

VERSION = 
"0.0.4"

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(file, index = {}) ⇒ Lxc

Returns a new instance of Lxc.



79
80
81
82
83
 
# File 'lib/linux/lxc.rb', line 79

def initialize(file, index = {})
  self.file = file
  @lines = Lines.new
  @index = index
end

Instance Attribute Details

#file ⇒ Object

Returns the value of attribute file.



76
77
78
 
# File 'lib/linux/lxc.rb', line 76

def file
  @file
end

#index ⇒ Object (readonly)

Returns the value of attribute index.



76
77
78
 
# File 'lib/linux/lxc.rb', line 76

def index
  @index
end

#lines ⇒ Object (readonly)

Returns the value of attribute lines.



76
77
78
 
# File 'lib/linux/lxc.rb', line 76

def lines
  @lines
end

#real_fname ⇒ Object

Returns the value of attribute real_fname.



77
78
79
 
# File 'lib/linux/lxc.rb', line 77

def real_fname
  @real_fname
end

Class Method Details

.parse(file, index = {}) ⇒ Object 



159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
 
# File 'lib/linux/lxc.rb', line 159

def self.parse(file, index = {})
  lxc = Lxc.new(file, index)
  IO.read(file).lines.each do |line|
    line = line.chop
    if line.match(/^\s*$/)
        lxc.add(line, nil)
    elsif line.match(/^\s*#.*$/)
        lxc.add('#', line)
    else
      match = line.match(/^\s*([a-z\.]+)\s*=\s*(.*)\s*$/)
      throw "illegal line in #{@file}:#{@lines.length}" unless match
      if match[1] == 'lxc.include'
        lxc.add(match[1], parse(match[2], index))
      else
        lxc.add(match[1], match[2])
      end
    end
  end
  lxc
end

Instance Method Details

#add(key, value = nil) ⇒ Object 



113
114
115
116
117
118
119
120
 
# File 'lib/linux/lxc.rb', line 113

def add(key, value = nil)
  key = key.strip
  if value and value.instance_of?(String)
    value = value.strip
  end
  line = Line.new(self, key, value)
  add_to_index(line)
end

#add_to_index(line) ⇒ Object 



122
123
124
125
126
127
 
# File 'lib/linux/lxc.rb', line 122

def add_to_index(line)
  key_to_path(line.key) do |path|
    @index[path] ||= Lines.new
    @index[path].add(line)
  end
end

#all_lines(&block) ⇒ Object 



129
130
131
132
133
134
135
136
 
# File 'lib/linux/lxc.rb', line 129

def all_lines(&block)
  @lines.each do |line|
    block.call(line)
    if line.value.instance_of?(Lxc)
      line.value.all_lines(&block)
    end
  end
end

#files ⇒ Object 



138
139
140
141
142
 
# File 'lib/linux/lxc.rb', line 138

def files
  ret = [Line.new(nil, "lxc.include", self)]
  all_lines {|line| line.value.instance_of?(Lxc) && (ret << line) }
  ret
end

#get(key) ⇒ Object 



91
92
93
 
# File 'lib/linux/lxc.rb', line 91

def get(key)
  @index[key]
end

#key_to_path(key, &block) ⇒ Object 



95
96
97
98
99
100
101
102
103
104
 
# File 'lib/linux/lxc.rb', line 95

def key_to_path(key, &block)
  path = ""
  dot = ""
  key.split('.').each do |element|
    path += dot + element
    dot = "."
    #puts ">>>>#{path}"
    block.call(path)
  end
end

#remove_from_index(line) ⇒ Object 



106
107
108
109
110
111
 
# File 'lib/linux/lxc.rb', line 106

def remove_from_index(line)
  key_to_path(line.key) do |path|
    get(path).remove(line)
    get(path).empty? && @index.delete(path)
  end
end

#to_s ⇒ Object 



155
156
157
 
# File 'lib/linux/lxc.rb', line 155

def to_s
  @file
end

#write ⇒ Object 



144
145
146
147
148
149
150
151
152
153
 
# File 'lib/linux/lxc.rb', line 144

def write
  File.open(real_fname, 'w') do |f|
    @lines.each do |line|
      if line.key == "lxc.include"
        line.value.write
      end
      f.write(line.to_s + "\n")
    end
  end
end