Method file_size

lib/input.cpp:1098–1222

}

void Input::file_size()
{
  off_t k = ftello(file_);
  if (k >= 0)
  {
    unsigned char buf[4];
    switch (utfx_)
    {
      case file_encoding::latin:
        while (::fread(buf, 1, 1, file_) == 1)
          size_ += 1 + (buf[0] >= 0x80);
        break;
      case file_encoding::cp437:
      case file_encoding::cp850:
      case file_encoding::cp858:
      case file_encoding::ebcdic:
      case file_encoding::cp1250:
      case file_encoding::cp1251:
      case file_encoding::cp1252:
      case file_encoding::cp1253:
      case file_encoding::cp1254:
      case file_encoding::cp1255:
      case file_encoding::cp1256:
      case file_encoding::cp1257:
      case file_encoding::cp1258:
      case file_encoding::iso8859_2:
      case file_encoding::iso8859_3:
      case file_encoding::iso8859_4:
      case file_encoding::iso8859_5:
      case file_encoding::iso8859_6:
      case file_encoding::iso8859_7:
      case file_encoding::iso8859_8:
      case file_encoding::iso8859_9:
      case file_encoding::iso8859_10:
      case file_encoding::iso8859_11:
      case file_encoding::iso8859_13:
      case file_encoding::iso8859_14:
      case file_encoding::iso8859_15:
      case file_encoding::iso8859_16:
      case file_encoding::macroman:
      case file_encoding::koi8_r:
      case file_encoding::koi8_u:
      case file_encoding::koi8_ru:
      case file_encoding::custom:
        while (::fread(buf, 1, 1, file_) == 1)
        {
          int c = page_[buf[0]];
          size_ += 1 + (c >= 0x80) + (c >= 0x0800); // + (c >= 0x010000); NOTE: page_[] value range < Unicode range
        }
        break;
      case file_encoding::utf16be:
        while (::fread(buf, 2, 1, file_) == 1)
        {
          int c = buf[0] << 8 | buf[1];
          if (c >= 0xD800 && c < 0xE000)
          {
            // UTF-16 surrogate pair
            if (c < 0xDC00 && ::fread(buf + 2, 2, 1, file_) == 1 && (buf[2] & 0xFC) == 0xDC)