Class: Kanrisuru::Remote::Fstab

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/kanrisuru/remote/fstab.rb,
lib/kanrisuru/remote/fstab/entry.rb,
lib/kanrisuru/remote/fstab/options.rb

Defined Under Namespace

Classes: Entry, Options

Instance Method Summary collapse

Constructor Details

#initialize(host, path = '/etc/fstab') ⇒ Fstab

Returns a new instance of Fstab.



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# File 'lib/kanrisuru/remote/fstab.rb', line 11

def initialize(host, path = '/etc/fstab')
  @host = host
  @path = path
  @file = nil
  @backup = nil

  init_from_os
end

Instance Method Details

#<<(entry) ⇒ Object 



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# File 'lib/kanrisuru/remote/fstab.rb', line 45

def <<(entry)
  append(entry)
end

#[](device) ⇒ Object 



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# File 'lib/kanrisuru/remote/fstab.rb', line 20

def [](device)
  get_entry(device)
end

#append(entry) ⇒ Object 



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# File 'lib/kanrisuru/remote/fstab.rb', line 49

def append(entry)
  if entry.instance_of?(Kanrisuru::Remote::Fstab::Entry)
    return if @entries.key?(entry.device)
  elsif entry.instance_of?(String)
    entry = Kanrisuru::Remote::Fstab::Entry.new(host: @host, line: entry)
    return if @entries.key?(entry.device)
  else
    raise ArgumentError, 'Invalid entry type'
  end

  @entries[entry.device] = {
    entry: entry,
    new: true
  }

  nil
end

#append_file! ⇒ Object

Only append new entries to file



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# File 'lib/kanrisuru/remote/fstab.rb', line 76

def append_file!
  @file.append do |f|
    @entries.each do |_, entry|
      f << entry[:entry].to_s if entry[:new]
    end
  end

  reload!
end

#delete(device) ⇒ Object 



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# File 'lib/kanrisuru/remote/fstab.rb', line 24

def delete(device)
  return false unless @entries.key?(device)

  @entries.delete(device)
end

#each(&block) ⇒ Object 



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# File 'lib/kanrisuru/remote/fstab.rb', line 69

def each(&block)
  @entries.each do |_, entry|
    block.call(entry[:entry])
  end
end

#find_device(device) ⇒ Object 



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# File 'lib/kanrisuru/remote/fstab.rb', line 67

def find_device(device); end

#get_entry(device) ⇒ Object 



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# File 'lib/kanrisuru/remote/fstab.rb', line 30

def get_entry(device)
  result = @entries[device]

  return result[:entry] if result

  result = nil

  ## Lookup by uuid or label
  @entries.each do |_, entry|
    result = entry[:entry] if !@result && (entry[:entry].uuid == device || entry[:entry].label == device)
  end

  result
end

#inspect ⇒ Object 



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# File 'lib/kanrisuru/remote/fstab.rb', line 110

def inspect
  format('#<Kanrisuru::Remote::Fstab:0x%<object_id>s @path=%<path>s @entries=%<entries>s>',
         object_id: object_id, path: @path, entries: @entries)
end

#reload! ⇒ Object 



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# File 'lib/kanrisuru/remote/fstab.rb', line 106

def reload!
  init_from_os
end

#to_s ⇒ Object 



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# File 'lib/kanrisuru/remote/fstab.rb', line 97

def to_s
  lines = []
  @entries.each do |_, entry|
    lines << entry[:entry].to_s
  end

  lines.join("\n")
end

#write_file! ⇒ Object

Rewrites entire fstab file with new and old entries



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# File 'lib/kanrisuru/remote/fstab.rb', line 87

def write_file!
  @file.write do |f|
    @entries.each do |_, entry|
      f << entry[:entry].to_s
    end
  end

  reload!
end