public static exec_hook_info from_ptr(IntPtr p)
{
GCHandle h = (GCHandle)p;
exec_hook_info hi = h.Target as exec_hook_info;
return(hi);
}
internal static exec_hook_info from_ptr(IntPtr p)
{
GCHandle h = (GCHandle)p;
exec_hook_info hi = h.Target as exec_hook_info;
// TODO assert(hi._h == h)
return(hi);
}
int ISQLite3Provider.sqlite3_exec(IntPtr db, string sql, delegate_exec func, object user_data, out string errMsg)
{
// TODO null string?
GCHandle pinned = GCHandle.Alloc(util.to_utf8(sql), GCHandleType.Pinned);
IntPtr ptr = pinned.AddrOfPinnedObject();
int rc;
byte[] buf8 = new byte[8];
GCHandle buf8_pinned = GCHandle.Alloc(buf8, GCHandleType.Pinned);
IntPtr buf8_ptr = buf8_pinned.AddrOfPinnedObject();
if (func != null)
{
exec_hook_info hi = new exec_hook_info(func, user_data);
callback_exec cb = new callback_exec(exec_hook_bridge);
GCHandle h_cb = GCHandle.Alloc(cb);
rc = SQLite3RuntimeProvider.sqlite3_exec(db.ToInt64(), ptr.ToInt64(), Marshal.GetFunctionPointerForDelegate(cb).ToInt64(), hi.ptr.ToInt64(), buf8_ptr.ToInt64());
hi.free();
h_cb.Free();
}
else
{
rc = SQLite3RuntimeProvider.sqlite3_exec(db.ToInt64(), ptr.ToInt64(), IntPtr.Zero.ToInt64(), IntPtr.Zero.ToInt64(), buf8_ptr.ToInt64());
}
IntPtr errmsg_ptr = new IntPtr(Marshal.ReadInt64(buf8_ptr));
buf8_pinned.Free();
if (errmsg_ptr == IntPtr.Zero)
{
errMsg = null;
}
else
{
errMsg = util.from_utf8(errmsg_ptr);
SQLite3RuntimeProvider.sqlite3_free(errmsg_ptr.ToInt64());
}
pinned.Free();
return(rc);
}
int ISQLite3Provider.sqlite3_exec (IntPtr db, string sql, delegate_exec func, object user_data, out string errMsg)
{
IntPtr errmsg_ptr;
int rc;
if (func != null) {
exec_hook_info hi = new exec_hook_info (func, user_data);
rc = NativeMethods.sqlite3_exec (db, util.to_utf8 (sql), exec_hook_bridge, hi.ptr, out errmsg_ptr);
hi.free ();
} else {
rc = NativeMethods.sqlite3_exec (db, util.to_utf8 (sql), null, IntPtr.Zero, out errmsg_ptr);
}
if (errmsg_ptr == IntPtr.Zero) {
errMsg = null;
} else {
errMsg = util.from_utf8 (errmsg_ptr);
NativeMethods.sqlite3_free (errmsg_ptr);
}
return rc;
}
static int exec_hook_bridge(IntPtr p, int n, IntPtr values_ptr, IntPtr names_ptr)
{
exec_hook_info hi = exec_hook_info.from_ptr(p);
return(hi.call(n, values_ptr, names_ptr));
}
int ISQLite3Provider.sqlite3_exec(IntPtr db, string sql, delegate_exec func, object user_data, out string errMsg)
{
// TODO null string?
GCHandle pinned = GCHandle.Alloc(util.to_utf8(sql), GCHandleType.Pinned);
IntPtr ptr = pinned.AddrOfPinnedObject();
int rc;
byte[] buf8 = new byte[8];
GCHandle buf8_pinned = GCHandle.Alloc(buf8, GCHandleType.Pinned);
IntPtr buf8_ptr = buf8_pinned.AddrOfPinnedObject();
if (func != null)
{
exec_hook_info hi = new exec_hook_info(func, user_data);
callback_exec cb = new callback_exec(exec_hook_bridge);
GCHandle h_cb = GCHandle.Alloc(cb);
rc = SQLite3RuntimeProvider.sqlite3_exec(db.ToInt64(), ptr.ToInt64(), Marshal.GetFunctionPointerForDelegate(cb).ToInt64(), hi.ptr.ToInt64(), buf8_ptr.ToInt64());
hi.free();
h_cb.Free();
}
else
{
rc = SQLite3RuntimeProvider.sqlite3_exec(db.ToInt64(), ptr.ToInt64(), IntPtr.Zero.ToInt64(), IntPtr.Zero.ToInt64(), buf8_ptr.ToInt64());
}
IntPtr errmsg_ptr = new IntPtr(Marshal.ReadInt64(buf8_ptr));
buf8_pinned.Free();
if (errmsg_ptr == IntPtr.Zero)
{
errMsg = null;
}
else
{
errMsg = util.from_utf8(errmsg_ptr);
SQLite3RuntimeProvider.sqlite3_free(errmsg_ptr.ToInt64());
}
pinned.Free();
return rc;
}
