Updated the SQL parser to support "SELECT TOP n [PERCENT]... " queries,
matching the Mocrosoft Access SQL language.
Export these queries from databases with mdb-queries.
* Separate -D (date only) and -T (date/time) format options in mdb-export and mdb-json
* New public mdb_set_shortdate_fmt() function in libmdb
* New private(ish) mdb_col_is_shortdate() function
I'm calling it "shortdate" in order to preserve the existing API.
See https://github.com/mdbtools/mdbtools/issues/12
This should fix long-standing complaints about the default bind size
without causing undue memory inflation in existing applications.
Could make this adjustable on the command line later.
Supersedes:
https://github.com/mdbtools/mdbtools/pull/137
Quickstart (requires Clang 6 or later):
$ export LIB_FUZZING_ENGINE=/path/to/fuzzing/library.a
$ ./configure --enable-fuzz-testing
$ make
$ cd src/fuzz
$ make fuzz_mdb
$ ./fuzz_mdb
Also add a new `mdb_open_buffer function` to facilitate in-memory
fuzz-testing. This requires fmemopen, which may not be present on all
systems. The internal API has been reworked to use file streams instead
of file descriptors. This allows reading from memory and reading from
files using a consistent API.
* Replace backend_is_init (formerly is_init) with relationships_table
* Remove deprecated functions that used static variables
* Move static "bound" variable to MdbHandle as relationships_values
Attempt to make the backend handling logic thread-safe. This removes the
last MDB_CONSTRUCTOR. Also get rid of some JAVA junk and make the
remaining static variables in backend.c constant. Finally remove some
obsolete fields from MdbFile.
I'm not sure if this is a complete solution - some of the global state
has been moved to thread-local storage. So passing an ODBC handle across
threads may have unexpected results. But at least it's not global state.
Each ODBC handle now has its own iconv_t object.
See #23
Add a shim implementing half-assed versions of most of the GLib
functions used by MDB Tools. If GLib is detected at compile-time,
use it, otherwise use the shim.
This work is not complete, as the option-parsing code is not yet
implemented - so most of the command-line tools crash.
If a host project has -Wstrict-prototypes enabled, the mdbtools header
results in warnings. Turn on -Wstrict-prototypes for the whole project
so that these never occur again.
Some Access 2010 files use 0x03 as the version number rather than
0x0103. For this reason I have changed the call to mdb_get_int32 to
mdb_get_byte.
In addition, according to the Library of Congress page:
https://www.loc.gov/preservation/digital/formats/fdd/fdd000463.shtml
Access 2016 uses 0x05 as the version number. I have inferred from the
Wikipedia page that Access 2013 likely uses 0x04.
