Class: PDF::Reader::Encoding::SymbolEncoding

Inherits:

PDF::Reader::Encoding

• Object
• PDF::Reader::Encoding
• PDF::Reader::Encoding::SymbolEncoding

Defined in:

lib/pdf/reader/encoding.rb

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 SymbolEncoding string into UTF-8.

Methods inherited from PDF::Reader::Encoding

factory

Instance Method Details

#to_utf8(str, tounicode = nil) ⇒ Object

convert a SymbolEncoding string into UTF-8

# File 'lib/pdf/reader/encoding.rb', line 568

def to_utf8(str, tounicode = nil)
  array_symbol = str.unpack('C*')
  array_symbol = self.process_differences(array_symbol)
  array_enc = []
  array_symbol.each do |num|
    case num
    when 0x22; array_enc << 0x2200
    when 0x24; array_enc << 0x2203
    when 0x27; array_enc << 0x220B
    when 0x2A; array_enc << 0x2217
    when 0x2D; array_enc << 0x2212
    when 0x40; array_enc << 0x2245
    when 0x41; array_enc << 0x0391
    when 0x42; array_enc << 0x0392
    when 0x43; array_enc << 0x03A7
    when 0x44; array_enc << 0x0394
    when 0x45; array_enc << 0x0395
    when 0x46; array_enc << 0x03A6
    when 0x47; array_enc << 0x0393
    when 0x48; array_enc << 0x0397
    when 0x49; array_enc << 0x0399
    when 0x4A; array_enc << 0x03D1
    when 0x4B; array_enc << 0x039A
    when 0x4C; array_enc << 0x039B
    when 0x4D; array_enc << 0x039C
    when 0x4E; array_enc << 0x039D
    when 0x4F; array_enc << 0x039F
    when 0x50; array_enc << 0x03A0
    when 0x51; array_enc << 0x0398
    when 0x52; array_enc << 0x03A1
    when 0x53; array_enc << 0x03A3
    when 0x54; array_enc << 0x03A4
    when 0x55; array_enc << 0x03A5
    when 0x56; array_enc << 0x03C2
    when 0x57; array_enc << 0x03A9
    when 0x58; array_enc << 0x039E
    when 0x59; array_enc << 0x03A8
    when 0x5A; array_enc << 0x0396
    when 0x5C; array_enc << 0x2234
    when 0x5E; array_enc << 0x22A5
    when 0x60; array_enc << 0xF8E5
    when 0x61; array_enc << 0x03B1
    when 0x62; array_enc << 0x03B2
    when 0x63; array_enc << 0x03C7
    when 0x64; array_enc << 0x03B4
    when 0x65; array_enc << 0x03B5
    when 0x66; array_enc << 0x03C6
    when 0x67; array_enc << 0x03B3
    when 0x68; array_enc << 0x03B7
    when 0x69; array_enc << 0x03B9
    when 0x6A; array_enc << 0x03D5
    when 0x6B; array_enc << 0x03BA
    when 0x6C; array_enc << 0x03BB
    when 0x6D; array_enc << 0x03BC
    when 0x6E; array_enc << 0x03BD
    when 0x6F; array_enc << 0x03BF
    when 0x70; array_enc << 0x03C0
    when 0x71; array_enc << 0x03B8
    when 0x72; array_enc << 0x03C1
    when 0x73; array_enc << 0x03C3
    when 0x74; array_enc << 0x03C4
    when 0x75; array_enc << 0x03C5
    when 0x76; array_enc << 0x03D6
    when 0x77; array_enc << 0x03C9
    when 0x78; array_enc << 0x03BE
    when 0x79; array_enc << 0x03C8
    when 0x7A; array_enc << 0x03B6
    when 0x7E; array_enc << 0x223C
    when 0xA0; array_enc << 0x20AC
    when 0xA1; array_enc << 0x03D2
    when 0xA2; array_enc << 0x2032
    when 0xA3; array_enc << 0x2264
    when 0xA4; array_enc << 0x2215
    when 0xA5; array_enc << 0x221E
    when 0xA6; array_enc << 0x0192
    when 0xA7; array_enc << 0x2663
    when 0xA8; array_enc << 0x2666
    when 0xA9; array_enc << 0x2665
    when 0xAA; array_enc << 0x2660
    when 0xAB; array_enc << 0x2194
    when 0xAC; array_enc << 0x2190
    when 0xAD; array_enc << 0x2191
    when 0xAE; array_enc << 0x2192
    when 0xAF; array_enc << 0x2193
    when 0xB2; array_enc << 0x2033
    when 0xB3; array_enc << 0x2265
    when 0xB4; array_enc << 0x00D7
    when 0xB5; array_enc << 0x221D
    when 0xB6; array_enc << 0x2202
    when 0xB7; array_enc << 0x2022
    when 0xB8; array_enc << 0x00F7
    when 0xB9; array_enc << 0x2260
    when 0xBA; array_enc << 0x2261
    when 0xBB; array_enc << 0x2248
    when 0xBC; array_enc << 0x2026
    when 0xBD; array_enc << 0xF8E6
    when 0xBE; array_enc << 0xF8E7
    when 0xBF; array_enc << 0x21B5
    when 0xC0; array_enc << 0x2135
    when 0xC1; array_enc << 0x2111
    when 0xC2; array_enc << 0x211C
    when 0xC3; array_enc << 0x2118
    when 0xC4; array_enc << 0x2297
    when 0xC5; array_enc << 0x2295
    when 0xC6; array_enc << 0x2205
    when 0xC7; array_enc << 0x2229
    when 0xC8; array_enc << 0x222A
    when 0xC9; array_enc << 0x2283
    when 0xCA; array_enc << 0x2287
    when 0xCB; array_enc << 0x2284
    when 0xCC; array_enc << 0x2282
    when 0xCD; array_enc << 0x2286
    when 0xCE; array_enc << 0x2208
    when 0xCF; array_enc << 0x2209
    when 0xD0; array_enc << 0x2220
    when 0xD1; array_enc << 0x2207
    when 0xD2; array_enc << 0xF6DA
    when 0xD3; array_enc << 0xF6D9
    when 0xD4; array_enc << 0xF6DB
    when 0xD5; array_enc << 0x220F
    when 0xD6; array_enc << 0x221A
    when 0xD7; array_enc << 0x22C5
    when 0xD8; array_enc << 0x00AC
    when 0xD9; array_enc << 0x2227
    when 0xDA; array_enc << 0x2228
    when 0xDB; array_enc << 0x21D4
    when 0xDC; array_enc << 0x21D0
    when 0xDD; array_enc << 0x21D1
    when 0xDE; array_enc << 0x21D2
    when 0xDF; array_enc << 0x21D3
    when 0xE0; array_enc << 0x25CA
    when 0xE1; array_enc << 0x2329
    when 0xE2; array_enc << 0xF8E8
    when 0xE3; array_enc << 0xF8E9
    when 0xE4; array_enc << 0xF8EA
    when 0xE5; array_enc << 0x2211
    when 0xE6; array_enc << 0xF8EB
    when 0xE7; array_enc << 0xF8EC
    when 0xE8; array_enc << 0xF8ED
    when 0xE9; array_enc << 0xF8EE
    when 0xEA; array_enc << 0xF8EF
    when 0xEB; array_enc << 0xF8F0
    when 0xEC; array_enc << 0xF8F1
    when 0xED; array_enc << 0xF8F2
    when 0xEE; array_enc << 0xF8F3
    when 0xEF; array_enc << 0xF8F4
    when 0xF1; array_enc << 0x232A
    when 0xF2; array_enc << 0x222B
    when 0xF3; array_enc << 0x2320
    when 0xF4; array_enc << 0xF8F5
    when 0xF5; array_enc << 0x2321
    when 0xF6; array_enc << 0xF8F6
    when 0xF7; array_enc << 0xF8F7
    when 0xF8; array_enc << 0xF8F8
    when 0xF9; array_enc << 0xF8F9
    when 0xFA; array_enc << 0xF8FA
    when 0xFB; array_enc << 0xF8FB
    when 0xFC; array_enc << 0xF8FC
    when 0xFD; array_enc << 0xF8FD
    when 0xFE; array_enc << 0xF8FE
    else
      array_enc << num
    end
  end

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

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

  # 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