It would seem that at least for some files I've tried, if a file has
content but it isn't a SQLite, SQLite (3) will open the file and
overwrite whatever was there. Is this the expected behavior? As a
workaround, I can look for the header string, but I'd really like it
if the SQLite library could tell me whether the file is a legal
database or not. Or maybe such a function exists and I just haven't
seen it?
If you are on Mac OS X, (or Linux, I would assume), you can do the
following to see what I meant:
> echo "this is not a database" > notadatabase.db
> cat notadatabase.db
> sqlite3 notadatabase.db
sqlite> create table foo(a);
sqlite> .exit
> cat notadatabase.db
