Method: PDF::Reader::GlyphHash#name_to_unicode

Defined in:
lib/pdf/reader/glyph_hash.rb

#name_to_unicode(name) ⇒ Object

attempt to convert a PDF Name to a unicode codepoint. Returns nil if no conversion is possible.

h = GlyphHash.new

h.name_to_unicode(:A)
=> 65

h.name_to_unicode(:Euro)
=> 8364

h.name_to_unicode(:X4A)
=> 74

h.name_to_unicode(:G30)
=> 48

h.name_to_unicode(:34)
=> 34



62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
 
# File 'lib/pdf/reader/glyph_hash.rb', line 62

def name_to_unicode(name)
  return nil unless name.is_a?(Symbol)

  name = name.to_s.gsub('_', '').intern
  str = name.to_s

  if @by_name.has_key?(name)
    @by_name[name]
  elsif str.match(/\AX[0-9a-fA-F]{2,4}\Z/)
    "0x#{str[1,4]}".hex
  elsif str.match(/\Auni[A-F\d]{4}\Z/)
    "0x#{str[3,4]}".hex
  elsif str.match(/\Au[A-F\d]{4,6}\Z/)
    "0x#{str[1,6]}".hex
  elsif str.match(/\A[A-Za-z]\d{1,5}\Z/)
    str[1,5].to_i
  elsif str.match(/\A[A-Za-z]{2}\d{2,5}\Z/)
    str[2,5].to_i
  else
    nil
  end
end