Method open

LASlib/src/lasreader_shp.cpp:95–242

}

BOOL LASreaderSHP::open(const char* file_name)
{
  if (file_name == 0)
  {
    laserror("file name pointer is zero");
    return FALSE;
  }

  clean();

  file = fopen_compressed(file_name, "rb", &piped);
  if (file == 0)
  {
    laserror("cannot open file '%s'", file_name);
    return FALSE;
  }

  // clean the header

  header.clean();

  // populate the header as much as it makes sense

  snprintf(header.system_identifier, LAS_HEADER_CHAR_LEN, LAS_TOOLS_COPYRIGHT);
  snprintf(header.generating_software, LAS_HEADER_CHAR_LEN, "via LASreaderSHP (%d)", LAS_TOOLS_VERSION);

  // maybe set creation date

#ifdef _WIN32
  WIN32_FILE_ATTRIBUTE_DATA attr;
	SYSTEMTIME creation;
  GetFileAttributesEx(file_name, GetFileExInfoStandard, &attr);
	FileTimeToSystemTime(&attr.ftCreationTime, &creation);
  int startday[13] = {-1, 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334};
  header.file_creation_day = startday[creation.wMonth] + creation.wDay;
  header.file_creation_year = creation.wYear;
  // leap year handling
  if ((((creation.wYear)%4) == 0) && (creation.wMonth > 2)) header.file_creation_day++;
#else
  header.file_creation_day = 111;
  header.file_creation_year = 2011;
#endif

  header.point_data_format = 0;
  header.point_data_record_length = 20;

  // initialize point

  point.init(&header, header.point_data_format, header.point_data_record_length);

  // read SHP header and populate the LAS header with the bounding box

  int int_input;
  if (fread(&int_input, sizeof(int), 1, file) != 1) return false; // file code (BIG)
  from_big_endian(&int_input); 
  if (int_input != 9994)
  {
    laserror("wrong shapefile code %d != 9994", int_input);