Class: MyPDFKit

Inherits:
Object
  • Object
show all
Defined in:
lib/my_pdfkit/os.rb,
lib/my_pdfkit/pdfkit.rb,
lib/my_pdfkit/source.rb,
lib/my_pdfkit/version.rb,
lib/my_pdfkit/middleware.rb,
lib/my_pdfkit/wkhtmltopdf.rb,
lib/my_pdfkit/configuration.rb,
lib/my_pdfkit/html_preprocessor.rb

Defined Under Namespace

Modules: HTMLPreprocessor, OS Classes: Configuration, Error, ImproperSourceError, ImproperWkhtmltopdfExitStatus, Middleware, NoExecutableError, Source, WkHTMLtoPDF

Constant Summary collapse

VERSION = 
'0.1.0.0'

Class Attribute Summary collapse

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(url_file_or_html, options = {}) ⇒ MyPDFKit

Returns a new instance of MyPDFKit.

Raises:



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

def initialize(url_file_or_html, options = {})
  @source = Source.new(url_file_or_html)

  @stylesheets = []

  options = MyPDFKit.configuration.default_options.merge(options)
  options.delete(:quiet) if MyPDFKit.configuration.verbose?
  options.merge! find_options_in_meta(url_file_or_html) unless source.url?
  @root_url = options.delete(:root_url)
  @protocol = options.delete(:protocol)
  @renderer = WkHTMLtoPDF.new options
  @renderer.normalize_options

  raise NoExecutableError unless File.exist?(MyPDFKit.configuration.wkhtmltopdf)
end

Class Attribute Details

.configuration ⇒ Object

Configure MyPDFKit someplace sensible, like config/initializers/my_pdfkit.rb

Examples:

MyPDFKit.configure do |config|
  config.wkhtmltopdf = '/usr/bin/wkhtmltopdf'
  config.use_xvfb    = true
  config.verbose     = true
end


82
83
84
 
# File 'lib/my_pdfkit/configuration.rb', line 82

def configuration
  @configuration
end

Instance Attribute Details

#renderer ⇒ Object (readonly)

Returns the value of attribute renderer.



30
31
32
 
# File 'lib/my_pdfkit/pdfkit.rb', line 30

def renderer
  @renderer
end

#source ⇒ Object

Returns the value of attribute source.



29
30
31
 
# File 'lib/my_pdfkit/pdfkit.rb', line 29

def source
  @source
end

#stylesheets ⇒ Object

Returns the value of attribute stylesheets.



29
30
31
 
# File 'lib/my_pdfkit/pdfkit.rb', line 29

def stylesheets
  @stylesheets
end

Class Method Details

.configure {|configuration| ... } ⇒ Object

Yields:



86
87
88
 
# File 'lib/my_pdfkit/configuration.rb', line 86

def self.configure
  yield(configuration)
end

Instance Method Details

#command(path = nil) ⇒ Object 



48
49
50
51
52
53
54
 
# File 'lib/my_pdfkit/pdfkit.rb', line 48

def command(path = nil)
  args = [*executable]
  args.concat(@renderer.options_for_command)
  args << @source.to_input_for_command
  args << (path ? path.to_s : '-')
  args
end

#executable ⇒ Object 



61
62
63
 
# File 'lib/my_pdfkit/pdfkit.rb', line 61

def executable
  MyPDFKit.configuration.executable
end

#options ⇒ Object 



56
57
58
59
 
# File 'lib/my_pdfkit/pdfkit.rb', line 56

def options
  # TODO(cdwort,sigmavirus24): Replace this with an attr_reader for @renderer instead in 1.0.0
  @renderer.options
end

#to_file(path) ⇒ Object 



83
84
85
86
 
# File 'lib/my_pdfkit/pdfkit.rb', line 83

def to_file(path)
  self.to_pdf(path)
  File.new(path)
end

#to_pdf(path = nil) ⇒ Object

Raises:



65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
 
# File 'lib/my_pdfkit/pdfkit.rb', line 65

def to_pdf(path=nil)
  preprocess_html
  append_stylesheets

  invoke = command(path)

  result = IO.popen(invoke, "wb+") do |pdf|
    pdf.puts(@source.to_s) if @source.html?
    pdf.close_write
    pdf.gets(nil) if path.nil?
  end

  # $? is thread safe per
  # http://stackoverflow.com/questions/2164887/thread-safe-external-process-in-ruby-plus-checking-exitstatus
  raise ImproperWkhtmltopdfExitStatus, invoke if empty_result?(path, result) || !successful?($?)
  return result
end