int ISQLite3Provider.sqlite3_create_collation(IntPtr db, string name, object v, delegate_collation func)
{
if (_collation_hooks.ContainsKey(name))
{
collation_hook_info hi = _collation_hooks[name];
// TODO maybe turn off the hook here, for now
hi.free();
_collation_hooks.Remove(name);
}
GCHandle pinned = GCHandle.Alloc(util.to_utf8(name), GCHandleType.Pinned);
IntPtr ptr = pinned.AddrOfPinnedObject();
int rc;
// 1 is SQLITE_UTF8
if (func != null)
{
collation_hook_info hi = new collation_hook_info(func, v);
rc = SQLite3RuntimeProvider.sqlite3_create_collation(db.ToInt64(), ptr.ToInt64(), 1, hi.ptr.ToInt64(), Marshal.GetFunctionPointerForDelegate(new callback_collation(collation_hook_bridge)).ToInt64());
if (rc == 0)
{
_collation_hooks[name] = hi;
}
}
else
{
rc = SQLite3RuntimeProvider.sqlite3_create_collation(db.ToInt64(), ptr.ToInt64(), 1, IntPtr.Zero.ToInt64(), IntPtr.Zero.ToInt64());
}
pinned.Free();
return(rc);
}
