Local getTextFromBuffer()

in jones-ndb/impl/src/ndb/NdbTypeEncoders.cpp [1054:1097]
41 lines of code
4 McCabe index (conditional complexity)

Local<String> getTextFromBuffer(const NdbDictionary::Column *col,
                                 Handle<Object> bufferObj) {
  const EncoderCharset * csinfo = getEncoderCharsetForColumn(col);
  uint32_t len = node::Buffer::Length(bufferObj);
  char * str = node::Buffer::Data(bufferObj);

  Local<String> string;
  
  // We won't call stringIsAscii() on a whole big TEXT buffer...
  if(csinfo->isAscii) {
    stats.read_strings_externalized++;
    ExternalizedAsciiString *ext = new ExternalizedAsciiString(str, len);
    ext->ref.Reset(isolate, bufferObj);
    string = String::NewExternal(isolate, ext);
  } else if (csinfo->isUtf16le) {
    stats.read_strings_externalized++;
    uint16_t * buf = (uint16_t *) str;
    ExternalizedUnicodeString * ext = new ExternalizedUnicodeString(buf, len/2);
    ext->ref.Reset(isolate, bufferObj);
    string = String::NewExternal(isolate, ext);
  } else {
    stats.read_strings_created++;
    if (csinfo->isUtf8) {
      DEBUG_PRINT("New from UTF8 [%d] %s", len, str);
      string = String::NewFromUtf8(isolate, str, String::kNormalString, len);
    } else { // Recode
      stats.read_strings_recoded++;
      CharsetMap csmap;
      int32_t lengths[2];
      lengths[0] = len;
      lengths[1] = getUtf8BufferSizeForColumn(len, csinfo);
      DEBUG_PRINT("Recode [%d / %d]", lengths[0], lengths[1]);
      char * recode_buffer = new char[lengths[1]];
      csmap.recode(lengths, 
                   col->getCharsetNumber(),
                   csmap.getUTF8CharsetNumber(),
                   str, recode_buffer);
      DEBUG_PRINT("New from Recode [%d] %s", lengths[1], recode_buffer);
      string = String::NewFromUtf8(isolate, recode_buffer, String::kNormalString, lengths[1]);
      delete[] recode_buffer;
    }
  }
  return string;
}