/// <summary>
/// Internal collation sequence function, which wraps up the raw string pointers and executes the Compare() virtual function.
/// WARNING: Must not throw exceptions.
/// </summary>
/// <param name="ptr">Not used</param>
/// <param name="len1">Length of the string pv1</param>
/// <param name="ptr1">Pointer to the first string to compare</param>
/// <param name="len2">Length of the string pv2</param>
/// <param name="ptr2">Pointer to the second string to compare</param>
/// <returns>Returns -1 if the first string is less than the second. 0 if they are equal, or 1 if the first string is greater
/// than the second. Returns 0 if an exception is caught.</returns>
internal int CompareCallback16(IntPtr ptr, int len1, IntPtr ptr1, int len2, IntPtr ptr2)
{
try
{
return(Compare(SQLite3_UTF16.UTF16ToString(ptr1, len1),
SQLite3_UTF16.UTF16ToString(ptr2, len2))); /* throw */
}
#if !PLATFORM_COMPACTFRAMEWORK
catch (Exception e) /* NOTE: Must catch ALL. */
{
try
{
if ((_flags & SQLiteConnectionFlags.LogCallbackException) ==
SQLiteConnectionFlags.LogCallbackException)
{
SQLiteLog.LogMessage(COR_E_EXCEPTION, String.Format(
CultureInfo.CurrentCulture,
"Caught exception in \"Compare\" (UTF16) method: {0}",
e)); /* throw */
}
}
catch
{
// do nothing.
}
}
#else
catch /* NOTE: Must catch ALL. */
{
// do nothing (Windows CE).
}
#endif
//
// NOTE: This must be done to prevent the core SQLite library from
// using our (invalid) result.
//
if (_base != null)
{
_base.Cancel();
}
return(0);
}
internal int CompareCallback16(IntPtr ptr, int len1, IntPtr ptr1, int len2, IntPtr ptr2)
{
return(this.Compare(SQLite3_UTF16.UTF16ToString(ptr1, len1), SQLite3_UTF16.UTF16ToString(ptr2, len2)));
}
