Class: Unpack

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

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(args) ⇒ Unpack

Returns a new instance of Unpack.

Raises:

  • (Exception)


8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
# File 'lib/unpack.rb', line 8

def initialize(args)
  args.keys.each { |name| instance_variable_set "@" + name.to_s, args[name] }
  
  @options = {
    :min_files              => 5,
    :depth                  => 2,
    :debugger               => false,
    :force_remove           => false,
    :remove                 => false,
    :to                     => false,
    :absolute_path_to_unrar => "#{File.dirname(__FILE__)}/../bin/unrar"
  }
  
  @removeable = {}
  
  @options.merge!(args[:options]) if args[:options]
  
  # If the path is relative
  @directory = File.expand_path(@directory) unless @directory.match(/^\//)
  
  # Makes shure that every directory structure looks the same
  @directory = Dir.new(@directory).path rescue nil
  
  raise Exception.new("You need to specify a valid path") if @directory.nil? or not system("test -r '#{@directory}'")
  raise Exception.new("You need unzip to keep going") if %x{whereis unzip}.empty?
  
  @files = []
end

Instance Attribute Details

#directoryObject

Returns the value of attribute directory.



6
7
8
# File 'lib/unpack.rb', line 6

def directory
  @directory
end

#filesObject

Returns the value of attribute files.



6
7
8
# File 'lib/unpack.rb', line 6

def files
  @files
end

#optionsObject

Returns the value of attribute options.



6
7
8
# File 'lib/unpack.rb', line 6

def options
  @options
end

#removeableObject

Returns the value of attribute removeable.



6
7
8
# File 'lib/unpack.rb', line 6

def removeable
  @removeable
end

Class Method Details

.it!(args) ⇒ Object



37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
# File 'lib/unpack.rb', line 37

def self.it!(args)
  # If no to argument is given, file will be unpacked in the same dir
  args[:to] = args[:to].nil? ? File.dirname(args[:file]) : args[:to]
  
  # Adding the options that is being passed to {it!} directly to {Unpack}
  this = self.new(:directory => args[:to], :options => {:min_files => 0, :to => true}.merge(args))
  
  # Is the file path absolute ? good, do nothing : get the absolute path
  file = args[:file].match(/^\//) ? args[:file] : File.expand_path(args[:file])
  
  this.files << file
  this.unpack!
  this.wipe! if this.options[:remove]
  
  # Only one files has been unpacked, that is why we select the first object in the list
  this.diff.first
end

.runner!(directory = '.', options = {}) ⇒ Object



55
56
57
58
59
60
61
62
63
64
65
# File 'lib/unpack.rb', line 55

def self.runner!(directory = '.', options = {})
  unpack = Unpack.new(:directory => directory, :options => options) rescue nil
  
  # If the initializer raised any excetions
  return [] if unpack.nil?
  unpack.prepare!
  unpack.clean!
  unpack.unpack!
  unpack.wipe! if options[:remove]
  unpack.diff
end

Instance Method Details

#clean!Object



77
78
79
80
81
82
83
84
85
86
87
# File 'lib/unpack.rb', line 77

def clean!
  # Removing all folders that have less then {@options[:lim]} files in them
  # Those folders are offen subtitle folders 
  folders = @files.map {|file| File.dirname(file)}.uniq.reject {|folder| Dir.entries(folder).count <= (@options[:min_files] + 2)}
  @files.reject!{|file| not folders.include?(File.dirname(file))}    
  results = []
  
  # Finding one rar file for every folder
  @files.group_by{|file| File.dirname(file) }.each_pair{|_,file| results << file.sort.first }
  @files = results
end

#diffObject



144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
# File 'lib/unpack.rb', line 144

def diff
  # The code below this line can only be called once
  return @removeable if @removeable.first.class == Container
  
  # Removing some non welcome data
  @removeable.reject! do |item,_|
    @removeable[item][:diff].nil? or @removeable[item][:diff].empty?
  end
  
  @removeable = @removeable.map do |value|
    Container.new(:files => value.last[:diff], :directory => value.first)
  end
  
  # Never return the hash
  @removeable.empty? ? [] : @removeable
end

#find_file_type(file_type) ⇒ Object



169
170
171
# File 'lib/unpack.rb', line 169

def find_file_type(file_type)    
  %x{cd '#{@directory}' && find '#{@directory}' -type f -maxdepth '#{(@options[:depth])}' -name '*.#{file_type}'}.split(/\n/)
end

#prepare!Object



67
68
69
70
71
72
73
74
75
# File 'lib/unpack.rb', line 67

def prepare!
  @files = []
  
  ['zip', 'rar'].each do |type|
    @files << find_file_type(type)
  end
  
  @files.flatten!.map! {|file| File.expand_path(file, Dir.pwd)}
end

#unpack!Object



89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
# File 'lib/unpack.rb', line 89

def unpack!
  @files.each  do |file|
    type = Mimer.identify(file)
    
    # Have the user specified a destenation folder to where the files are going to be unpacked?
    # If so, use that, if not use the current location of the archive file
    path = self.options[:to] ? @directory : File.dirname(file)
    
    before = Dir.new(path).entries
    
    if type.zip?
      @removeable.merge!(path => {:file_type => 'zip'})
      self.unzip(:path => path, :file => file)
    elsif type.rar?
      @removeable.merge!(path => {:file_type => 'rar'})
      self.unrar(:path => path, :file => file)
    else
      puts "Something went wrong, the mime type does not match zip or rar" if @options[:debugger]
    end
    
    # What files/folders where unpacked?
    diff = Dir.new(path).entries - before
    
    @removeable[path] ? @removeable[path].merge!(:diff => diff) : @removeable.delete(path)
      
    # Some debug info
    if @options[:debugger] and diff.any? and @removeable[path]
      puts "#{diff.count} where unpacked"
      puts "The archive was of type #{@removeable[path][:file_type]}"
      puts "The name of the file(s) are #{diff.join(', ')}"
      puts "The path is #{path}"
      STDOUT.flush
    end
  end
end

#unrar(args) ⇒ Object



161
162
163
# File 'lib/unpack.rb', line 161

def unrar(args)
  %x(cd '#{args[:path]}' && '#{@options[:absolute_path_to_unrar]}' e -y -o- '#{args[:file]}')
end

#unzip(args) ⇒ Object



165
166
167
# File 'lib/unpack.rb', line 165

def unzip(args)
  %x(unzip -n '#{args[:file]}' -d '#{args[:path]}')    
end

#wipe!Object

Removes the old rar and zip files



126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
# File 'lib/unpack.rb', line 126

def wipe!
  @removeable.each do |value|
    path = value.first
    type = value.last[:file_type]
    
    # Does not remove anything if nothing where unpacked
    next if value.last[:diff].empty? and not @options[:force_remove]
    
    puts "Removing files in #{path}" if @options[:debugger]
    
    # Finding every file in this directory
    Dir.glob(path + '/*').each do |file|
      # Is the found file as the same type as the one that got unpacked?
      FileUtils.rm(file) if Mimer.identify(file).send(:"#{type}?")
    end
  end
end