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Name	Size	Permission
callbacks.rb	551 B	-rwxr-xr-x
extract_bates.rb	1.36 KB	-rwxr-xr-x
extract_fonts.rb	1.75 KB	-rwxr-xr-x
extract_images.rb	8.04 KB	-rwxr-xr-x
fuzzy_paragraphs.rb	471 B	-rwxr-xr-x
hash.rb	265 B	-rwxr-xr-x
metadata.rb	296 B	-rwxr-xr-x
page_count.rb	311 B	-rwxr-xr-x
rspec.rb	716 B	-rwxr-xr-x
text.rb	303 B	-rwxr-xr-x
version.rb	273 B	-rwxr-xr-x

Code Editor : extract_fonts.rb

#!/usr/bin/env ruby
# coding: utf-8

# This demonstrates a way to extract TTF fonts from a PDF. It could be expanded
# to support extra font formats if required. Be aware that many PDFs subset
# fonts before they're embedded so glyphs may be missing or re-arranged.

require 'pdf/reader'

module ExtractFonts

class Extractor

def page(page)
      count = 0

return count if page.fonts.nil? || page.fonts.empty?

page.fonts.each do |label, font|
        next if complete_refs[font]
        complete_refs[font] = true

process_font(page, font)

count += 1
      end

count
    end

private

def process_font(page, font)
      font = page.objects.deref(font)

case font[:Subtype]
      when :Type0 then
        font[:DescendantFonts].each { |f| process_font(page, f) }
      when :TrueType, :CIDFontType2 then
        ExtractFonts::TTF.new(page.objects, font).save("#{font[:BaseFont]}.ttf")
      else
        $stderr.puts "unsupported font type #{font[:Subtype]}"
      end
    end

def complete_refs
      @complete_refs ||= {}
    end

end

class TTF

def initialize(objects, font)
      @objects, @font = objects, font
      @descriptor = @objects.deref(@font[:FontDescriptor])
    end

def save(filename)
      puts "#{filename}"
      if @descriptor && @descriptor[:FontFile2]
        stream = @objects.deref(@descriptor[:FontFile2])
        File.open(filename, "wb") { |file| file.write stream.unfiltered_data }
      else
        $stderr.puts "- TTF font not embedded"
      end
    end
  end
end

filename = File.expand_path(File.dirname(__FILE__)) + "/../spec/data/cairo-unicode.pdf"
extractor = ExtractFonts::Extractor.new

PDF::Reader.open(filename) do |reader|
  page = reader.page(1)
  extractor.page(page)
end

${this.title}

Code Editor : extract_fonts.rb