Module: CarrierWave::DocsplitIntegration

Defined in:
lib/carrierwave-docsplit.rb

Defined Under Namespace

Classes: NoModelError

Instance Method Summary collapse

Instance Method Details

#extract(options = {}) ⇒ Object

Setup the extraction.



22
23
24
25
26
27
28
29
30
 
# File 'lib/carrierwave-docsplit.rb', line 22

def extract(options = {})
  if options[:images]
    self.setup_image_extraction options[:images]
  end

  if options[:text]
    self.setup_text_extraction options[:text]
  end
end

#setup_image_extraction(options) ⇒ Object 



49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
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
124
125
126
127
 
# File 'lib/carrierwave-docsplit.rb', line 49

def setup_image_extraction(options)
   self.instance_eval do

    define_method :output_path do
      return nil if self.file.nil?
      File.expand_path(File.join self.store_dir, self.file.basename)
    end

    # Latch our extraction method into the processing queue.
    process :enact_extraction => options[:sizes]


    # Define a reader to access the thumbnails stored on disk.
    #
    # Returns a hash structured like so.
    #
    # {
    #   '700x700' => ['/uploads/w9/700x/w9_1.png']
    # }
    #
    # This allows for accessing the sizes like this:
    #
    # file.thumbs['700x700']

    define_method options[:to] do
      path = File.join(self.output_path, '*')

      # require 'pry'

      # binding.pry

      dirs_or_files = Dir.glob(path)
      reduced = {}

      # Multiple Sizes
      if dirs_or_files.any? { |entry| entry.match /\d+x\d*/ }
        Dir.glob(path) do |dirs|
          if dirs.is_a?(String)
            dirs = [] << dirs
          end

          dirs.each do |dir|
            thumbs = Dir.glob(File.join(dir, '*'))
            key = File.basename(dir)
            reduced[key] = thumbs
          end
        end

      # Only as single size supplied
      else
        options.delete :to
        size = options[:sizes].values.first
        reduced[size] = dirs_or_files
      end

      reduced
    end

    define_method :enact_extraction do |*args|
      args.flatten!

      # zip the args back into the hash the user wrote them in.
      if args.size == 0 || (args.size % 2) > 0
        raise ArgumentError, "Need an even amount of arguments (Given #{args.size} #{args.size % 2})"
      end

      sizes = args.each_slice(2).reduce({}) { |mem, pair| mem.merge({ pair.first => pair.last }) }

      self.class.class_eval do
        sizes.keys.each { |size| version size }
      end

      out = self.output_path
      FileUtils.mkdir_p out

      Docsplit.extract_images self.file.path, :size => sizes.values, :output => out
    end
  end
end

#setup_text_extraction(options) ⇒ Object 



32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
 
# File 'lib/carrierwave-docsplit.rb', line 32

def setup_text_extraction(options)
  self.instance_eval do
    process :enact_text_extraction

    define_method :enact_text_extraction do
      raise NoModelError if @model.nil?

      out = File.join self.store_dir, self.file.basename
      FileUtils.mkdir_p out
      Docsplit.extract_text self.file.path, :ocr => false, :output => out
      text = File.read Dir.glob(File.join(out, '*.txt')).first

      @model.send "#{options[:to]}=", text
    end
  end
end