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49 lines
1.1 KiB
49 lines
1.1 KiB
# frozen_string_literal: true
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module PdfUtils
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DEFAULT_DPI = 72
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US_LETTER_W = DEFAULT_DPI * 8.5
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module_function
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def encrypted?(data, password: nil)
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HexaPDF::Document.new(io: StringIO.new(data), decryption_opts: { password: })
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false
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rescue HexaPDF::EncryptionError
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true
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end
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def decrypt(data, password)
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encrypted_doc = HexaPDF::Document.new(io: StringIO.new(data), decryption_opts: { password: })
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decrypted_doc = HexaPDF::Document.new
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encrypted_doc.pages.each do |page|
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decrypted_doc.pages << decrypted_doc.import(page)
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end
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decrypted_io = StringIO.new
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decrypted_doc.write(decrypted_io, validate: false)
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decrypted_io.tap(&:rewind).read
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end
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def merge(files)
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merged_pdf = HexaPDF::Document.new
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files.each do |file|
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pdf = HexaPDF::Document.new(io: file)
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pdf.pages.each { |page| merged_pdf.pages << merged_pdf.import(page) }
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end
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merged_content = StringIO.new
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merged_pdf.validate(auto_correct: true)
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merged_pdf.write(merged_content, validate: false)
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merged_content.rewind
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merged_content
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end
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end
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