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36 lines
1017 B
36 lines
1017 B
# frozen_string_literal: true
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module Templates
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module BuildAnnotations
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module_function
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def call(data)
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pdf = PDF::Reader.new(StringIO.new(data))
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pdf.pages.flat_map.with_index do |page, index|
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annotations = page.objects.deref!(page.attributes[:Annots]) || []
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annotations.filter_map do |annot|
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next if annot[:A].blank? || annot[:A][:URI].blank?
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next unless annot[:Subtype] == :Link
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next if !annot[:A][:URI].starts_with?('https://') && !annot[:A][:URI].starts_with?('http://')
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build_external_link_hash(page, annot).merge('page' => index)
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end
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end
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end
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def build_external_link_hash(page, annot)
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left, bottom, right, top = annot[:Rect]
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{
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'type' => 'external_link',
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'value' => annot[:A][:URI],
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'x' => left / page.width,
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'y' => (page.height - top) / page.height,
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'w' => (right - left) / page.width,
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'h' => (top - bottom) / page.height
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}
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end
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end
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end
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