Class: ActiveStorageValidations::Analyzer::PdfAnalyzer

Inherits:
Analyzer
  • Object
show all
Defined in:
lib/active_storage_validations/analyzer/pdf_analyzer.rb

Overview

ActiveStorageValidations PDF Analyzer

Extracts the following from a pdf attachable:

  • Width (pts) => for the first page only
  • Height (pts) => for the first page only
  • Pages (integer) => number of pages in the pdf

Example:

ActiveStorageValidations::Analyzer::PdfAnalyzer.new(attachable).metadata
# => { width: 150, height: 150, pages: 1 }

This analyzer requires the poppler system library, which is not provided by Rails.

Constant Summary collapse

PAGE_SIZE_NUMBER =

pdfinfo reports e.g. "595.276 x 841.89 pts (A4)". Capture the full integer or decimal so extra fractional digits are not split into a second number (which would make height 8 for A4).

/\d+(?:\.\d+)?/

Instance Method Summary collapse

Instance Method Details

#metadata ⇒ Object 



24
25
26
27
28
29
30
31
32
 
# File 'lib/active_storage_validations/analyzer/pdf_analyzer.rb', line 24

def metadata
  read_media do |media|
    {
      width: width,
      height: height,
      pages: pages
    }.compact
  end
end