Function demzip_read_header

LASlib/src/demzip_dll.cpp:3451–4336

---------------------------------------------------------------------------*/

/*---------------------------------------------------------------------------*/
static I32
demzip_read_header(
    demzip_dll_struct*                 demzip_dll
    , demzip_BOOL*                     is_compressed
)
{
  U32 i;

  // read the header variable after variable

  CHAR file_signature[5];
  try { demzip_dll->streamin->getBytes((U8*)file_signature, 4); } catch(...)
  {
    sprintf(demzip_dll->error, "reading header.file_signature");
    return 1;
  }
  if (strncmp(file_signature, "LASF", 4) != 0)
  {
    sprintf(demzip_dll->error, "wrong file_signature. not a LAS/LAZ file.");
    return 1;
  }
  try { demzip_dll->streamin->get16bitsLE((U8*)&(demzip_dll->header.file_source_ID)); } catch(...)
  {
    sprintf(demzip_dll->error, "reading header.file_source_ID");
    return 1;
  }
  try { demzip_dll->streamin->get16bitsLE((U8*)&(demzip_dll->header.global_encoding)); } catch(...)
  {
    sprintf(demzip_dll->error, "reading header.global_encoding");
    return 1;
  }
  try { demzip_dll->streamin->get32bitsLE((U8*)&(demzip_dll->header.project_ID_GUID_data_1)); } catch(...)
  {
    sprintf(demzip_dll->error, "reading header.project_ID_GUID_data_1");
    return 1;
  }
  try { demzip_dll->streamin->get16bitsLE((U8*)&(demzip_dll->header.project_ID_GUID_data_2)); } catch(...)
  {
    sprintf(demzip_dll->error, "reading header.project_ID_GUID_data_2");
    return 1;
  }
  try { demzip_dll->streamin->get16bitsLE((U8*)&(demzip_dll->header.project_ID_GUID_data_3)); } catch(...)
  {
    sprintf(demzip_dll->error, "reading header.project_ID_GUID_data_3");
    return 1;
  }
  try { demzip_dll->streamin->getBytes((U8*)demzip_dll->header.project_ID_GUID_data_4, 8); } catch(...)
  {
    sprintf(demzip_dll->error, "reading header.project_ID_GUID_data_4");
    return 1;
  }
  try { demzip_dll->streamin->getBytes((U8*)&(demzip_dll->header.version_major), 1); } catch(...)
  {
    sprintf(demzip_dll->error, "reading header.version_major");
    return 1;
  }
  try { demzip_dll->streamin->getBytes((U8*)&(demzip_dll->header.version_minor), 1); } catch(...)
  {