Implement Seac SeacSync databaser parser.

Dives for the seac action computer are imported by the seacsync
program into two tables in an sqlite3 database.

The dive information is read from the headers_dive table.
The dive_data table is then queried for each dive to get samples.

The seac action computer is the only current supported computer
by the seacsync program. It only supports two gas mixes, so the
parser will toggle between two cylinders whenever it detects a
change in the active O2 mix.

Dive start time is stored in UTC with a timezone offset.
A helper function to read this was added to qthelper.

Default cases have been added to some switch statements
to assist in future development for other dive types and
salinity.

Example database has been added to ./dives/TestDiveSeacSync.db

Signed-off-by: James Wobser <james.wobser@gmail.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/core/qthelper.h b/core/qthelper.h
index a18d6d04d..a3394e684 100644
--- a/core/qthelper.h
+++ b/core/qthelper.h
@@ -5,6 +5,7 @@
 #include <libxslt/transform.h>
 #include <libxslt/xsltutils.h>
 #include "core/pref.h"
+#include "subsurface-time.h"
 
 struct picture;
 
@@ -147,6 +148,7 @@ const char *subsurface_user_agent();
 enum deco_mode decoMode();
 int parse_seabear_header(const char *filename, char **params, int pnr);
 char *get_current_date();
+time_t get_dive_datetime_from_isostring(char *when);
 void print_qt_versions();
 void lock_planner();
 void unlock_planner();