void DataAccess::scan(const FileAccess& fa, MSG_data& pro, MSG_data& epi, MSG_header& header)
{
// Read prologue
MSG_header PRO_head;
//p.activity("Reading prologue " + opts.prologueFile());
read_file(fa.prologueFile(), PRO_head, pro);
// Read epilogue
MSG_header EPI_head;
//p.activity("Reading epilogue " + opts.epilogueFile());
read_file(fa.epilogueFile(), EPI_head, epi);
// Sort the segment names by their index
vector<string> segfiles = fa.segmentFiles();
for (const auto& i: segfiles)
{
//p.activity("Scanning segment " + *i);
read_file(i, header);
if (header.segment_id->data_field_format == MSG_NO_FORMAT)
throw std::runtime_error(i + ": product dumped in binary format");
int idx = header.segment_id->sequence_number-1;
if (idx < 0) continue;
if ((size_t)idx >= segnames.size())
segnames.resize(idx + 1);
segnames[idx] = i;
}
if (segnames.empty()) throw std::runtime_error("no segments found");
// Read common info just once from a random segment
scanSegment(header);
if (hrv)
{
MSG_ActualL15CoverageHRV& cov = epi.epilogue->product_stats.ActualL15CoverageHRV;
LowerEastColumnActual = cov.LowerEastColumnActual;
LowerNorthLineActual = cov.LowerNorthLineActual;
LowerWestColumnActual = cov.LowerWestColumnActual;
LowerSouthLineActual = cov.LowerSouthLineActual;
UpperEastColumnActual = cov.UpperEastColumnActual;
UpperSouthLineActual = cov.UpperSouthLineActual;
UpperWestColumnActual = cov.UpperWestColumnActual;
UpperNorthLineActual = cov.UpperNorthLineActual;
MaxLineActual = max(LowerNorthLineActual, UpperNorthLineActual);
#if 0
fprintf(stderr, "LECA %zd\n", LowerEastColumnActual);
fprintf(stderr, "LNLA %zd\n", LowerNorthLineActual);
fprintf(stderr, "LWCA %zd\n", LowerWestColumnActual);
fprintf(stderr, "LSLA %zd\n", LowerSouthLineActual);
fprintf(stderr, "UECA %zd\n", UpperEastColumnActual);
fprintf(stderr, "UNLA %zd\n", UpperNorthLineActual);
fprintf(stderr, "UWCA %zd\n", UpperWestColumnActual);
fprintf(stderr, "USLA %zd\n", UpperSouthLineActual);
fprintf(stderr, "MLA %zd\n", MaxLineActual);
#endif
} else {
/*
* TODO: what is this for?
WestColumnActual = 1856 - header.image_navigation->column_offset + 1;
SouthLineActual = 1856 - header.image_navigation->line_offset + 1;
*/
WestColumnActual = 1;
SouthLineActual = 1;
}
}
