Class: PDF::Reader::Encoding::MacRomanEncoding

Inherits:

PDF::Reader::Encoding

• Object
• PDF::Reader::Encoding
• PDF::Reader::Encoding::MacRomanEncoding

Defined in:

lib/pdf/reader/encoding.rb

Overview

The default encoding for OSX <= v9 see: en.wikipedia.org/wiki/Mac_OS_Roman

Constant Summary

Constants inherited from PDF::Reader::Encoding

UNKNOWN_CHAR

Instance Attribute Summary

Attributes inherited from PDF::Reader::Encoding

#differences

Instance Method Summary

• #to_utf8(str, tounicode = nil) ⇒ Object

  convert a MacRomanEncoding string into UTF-8.

Methods inherited from PDF::Reader::Encoding

factory

Instance Method Details

#to_utf8(str, tounicode = nil) ⇒ Object

convert a MacRomanEncoding string into UTF-8

# File 'lib/pdf/reader/encoding.rb', line 338

def to_utf8(str, tounicode = nil)
  # content of this method borrowed from REXML::Encoding.decode_cp1252
  array_mac = str.unpack('C*')
  array_mac = self.process_differences(array_mac)
  array_enc = []
  array_mac.each do |num|
    if tounicode && (code = tounicode.decode(num))
      array_enc << code
    elsif tounicode
      array_enc << PDF::Reader::Encoding::UNKNOWN_CHAR
    else
      case num
        # change necesary characters to equivilant Unicode codepoints
      when 0x80; array_enc << 0x00C4
      when 0x81; array_enc << 0x00C5
      when 0x82; array_enc << 0x00C7
      when 0x83; array_enc << 0x00C9
      when 0x84; array_enc << 0x00D1
      when 0x85; array_enc << 0x00D6
      when 0x86; array_enc << 0x00DC
      when 0x87; array_enc << 0x00E1
      when 0x88; array_enc << 0x00E0
      when 0x89; array_enc << 0x00E2
      when 0x8A; array_enc << 0x00E4
      when 0x8B; array_enc << 0x00E3
      when 0x8C; array_enc << 0x00E5
      when 0x8D; array_enc << 0x00E7
      when 0x8E; array_enc << 0x00E9
      when 0x8F; array_enc << 0x00E8
      when 0x90; array_enc << 0x00EA
      when 0x91; array_enc << 0x00EB
      when 0x92; array_enc << 0x00ED
      when 0x93; array_enc << 0x00EC
      when 0x94; array_enc << 0x00EE
      when 0x95; array_enc << 0x00EF
      when 0x96; array_enc << 0x00F1
      when 0x97; array_enc << 0x00F3
      when 0x98; array_enc << 0x00F2
      when 0x99; array_enc << 0x00F4
      when 0x9A; array_enc << 0x00F6
      when 0x9B; array_enc << 0x00F5
      when 0x9C; array_enc << 0x00FA
      when 0x9D; array_enc << 0x00F9
      when 0x9E; array_enc << 0x00FB
      when 0x9F; array_enc << 0x00FC
      when 0xA0; array_enc << 0x2020
      when 0xA1; array_enc << 0x00B0
      when 0xA2; array_enc << 0x00A2
      when 0xA3; array_enc << 0x00A3
      when 0xA4; array_enc << 0x00A7
      when 0xA5; array_enc << 0x2022
      when 0xA6; array_enc << 0x00B6
      when 0xA7; array_enc << 0x00DF
      when 0xA8; array_enc << 0x00AE
      when 0xA9; array_enc << 0x00A9
      when 0xAA; array_enc << 0x2122
      when 0xAB; array_enc << 0x00B4
      when 0xAC; array_enc << 0x00A8
      when 0xAD; array_enc << 0x2260
      when 0xAE; array_enc << 0x00C6
      when 0xAF; array_enc << 0x00D8
      when 0xB0; array_enc << 0x221E
      when 0xB1; array_enc << 0x00B1
      when 0xB2; array_enc << 0x2264
      when 0xB3; array_enc << 0x2265
      when 0xB4; array_enc << 0x00A5
      when 0xB5; array_enc << 0x00B5
      when 0xB6; array_enc << 0x2202
      when 0xB7; array_enc << 0x2211
      when 0xB8; array_enc << 0x220F
      when 0xB9; array_enc << 0x03C0
      when 0xBA; array_enc << 0x222B
      when 0xBB; array_enc << 0x00AA
      when 0xBC; array_enc << 0x00BA
      when 0xBD; array_enc << 0x03A9
      when 0xBE; array_enc << 0x00E6
      when 0xBF; array_enc << 0x00F8
      when 0xC0; array_enc << 0x00BF
      when 0xC1; array_enc << 0x00A1
      when 0xC2; array_enc << 0x00AC
      when 0xC3; array_enc << 0x221A
      when 0xC4; array_enc << 0x0192
      when 0xC5; array_enc << 0x2248
      when 0xC6; array_enc << 0x2206
      when 0xC7; array_enc << 0x00AB
      when 0xC8; array_enc << 0x00BB
      when 0xC9; array_enc << 0x2026
      when 0xCA; array_enc << 0x00A0
      when 0xCB; array_enc << 0x00C0
      when 0xCC; array_enc << 0x00C3
      when 0xCD; array_enc << 0x00D5
      when 0xCE; array_enc << 0x0152
      when 0xCF; array_enc << 0x0153
      when 0xD0; array_enc << 0x2013
      when 0xD1; array_enc << 0x2014
      when 0xD2; array_enc << 0x201C
      when 0xD3; array_enc << 0x201D
      when 0xD4; array_enc << 0x2018
      when 0xD5; array_enc << 0x2019
      when 0xD6; array_enc << 0x00F7
      when 0xD7; array_enc << 0x25CA
      when 0xD8; array_enc << 0x00FF
      when 0xD9; array_enc << 0x0178
      when 0xDA; array_enc << 0x2044
      when 0xDB; array_enc << 0x20AC
      when 0xDC; array_enc << 0x2039
      when 0xDD; array_enc << 0x203A
      when 0xDE; array_enc << 0xFB01
      when 0xDF; array_enc << 0xFB02
      when 0xE0; array_enc << 0x2021
      when 0xE1; array_enc << 0x00B7
      when 0xE2; array_enc << 0x201A
      when 0xE3; array_enc << 0x201E
      when 0xE4; array_enc << 0x2030
      when 0xE5; array_enc << 0x00C2
      when 0xE6; array_enc << 0x00CA
      when 0xE7; array_enc << 0x00C1
      when 0xE8; array_enc << 0x00CB
      when 0xE9; array_enc << 0x00C8
      when 0xEA; array_enc << 0x00CD
      when 0xEB; array_enc << 0x00CE
      when 0xEC; array_enc << 0x00CF
      when 0xED; array_enc << 0x00CC
      when 0xEE; array_enc << 0x00D3
      when 0xEF; array_enc << 0x00D4
      when 0xF0; array_enc << 0xF8FF
      when 0xF1; array_enc << 0x00D2
      when 0xF2; array_enc << 0x00DA
      when 0xF3; array_enc << 0x00D8
      when 0xF4; array_enc << 0x00D9
      when 0xF5; array_enc << 0x0131
      when 0xF6; array_enc << 0x02C6
      when 0xF7; array_enc << 0x02DC
      when 0xF8; array_enc << 0x00AF
      when 0xF9; array_enc << 0x02D8
      when 0xFA; array_enc << 0x02D9
      when 0xFB; array_enc << 0x02DA
      when 0xFC; array_enc << 0x00B8
      when 0xFD; array_enc << 0x02DD
      when 0xFE; array_enc << 0x02DB
      when 0xFF; array_enc << 0x02C7
      else
        array_enc << num
      end
    end
  end

  # convert any glyph names to unicode codepoints
  array_enc = self.process_glyphnames(array_enc)

  # replace charcters that didn't convert to unicode nicely with something valid
  array_enc.collect! { |c| c ? c : PDF::Reader::Encoding::UNKNOWN_CHAR }

  # pack all our Unicode codepoints into a UTF-8 string
  ret = array_enc.pack("U*")

  # set the strings encoding correctly under ruby 1.9+
  ret.force_encoding("UTF-8") if ret.respond_to?(:force_encoding)

  return ret
end