Base version of ncurses-5.7 library
diff --git a/form/frm_hook.c b/form/frm_hook.c
new file mode 100644
index 0000000..18e6d71
--- /dev/null
+++ b/form/frm_hook.c
@@ -0,0 +1,142 @@
+/****************************************************************************
+ * Copyright (c) 1998-2003,2004 Free Software Foundation, Inc.              *
+ *                                                                          *
+ * Permission is hereby granted, free of charge, to any person obtaining a  *
+ * copy of this software and associated documentation files (the            *
+ * "Software"), to deal in the Software without restriction, including      *
+ * without limitation the rights to use, copy, modify, merge, publish,      *
+ * distribute, distribute with modifications, sublicense, and/or sell       *
+ * copies of the Software, and to permit persons to whom the Software is    *
+ * furnished to do so, subject to the following conditions:                 *
+ *                                                                          *
+ * The above copyright notice and this permission notice shall be included  *
+ * in all copies or substantial portions of the Software.                   *
+ *                                                                          *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
+ *                                                                          *
+ * Except as contained in this notice, the name(s) of the above copyright   *
+ * holders shall not be used in advertising or otherwise to promote the     *
+ * sale, use or other dealings in this Software without prior written       *
+ * authorization.                                                           *
+ ****************************************************************************/
+
+/****************************************************************************
+ *   Author:  Juergen Pfeifer, 1995,1997                                    *
+ ****************************************************************************/
+
+#include "form.priv.h"
+
+MODULE_ID("$Id: frm_hook.c,v 1.14 2004/12/25 22:37:27 tom Exp $")
+
+/* "Template" macro to generate function to set application specific hook */
+#define GEN_HOOK_SET_FUNCTION( typ, name ) \
+NCURSES_IMPEXP int NCURSES_API set_ ## typ ## _ ## name (FORM *form, Form_Hook func)\
+{\
+   T((T_CALLED("set_" #typ"_"#name"(%p,%p)"), form, func));\
+   (Normalize_Form( form ) -> typ ## name) = func ;\
+   RETURN(E_OK);\
+}
+
+/* "Template" macro to generate function to get application specific hook */
+#define GEN_HOOK_GET_FUNCTION( typ, name ) \
+NCURSES_IMPEXP Form_Hook NCURSES_API typ ## _ ## name ( const FORM *form )\
+{\
+   T((T_CALLED(#typ "_" #name "(%p)"), form));\
+   returnFormHook( Normalize_Form( form ) -> typ ## name );\
+}
+
+/*---------------------------------------------------------------------------
+|   Facility      :  libnform
+|   Function      :  int set_field_init(FORM *form, Form_Hook f)
+|
+|   Description   :  Assigns an application defined initialization function
+|                    to be called when the form is posted and just after
+|                    the current field changes.
+|
+|   Return Values :  E_OK      - success
++--------------------------------------------------------------------------*/
+GEN_HOOK_SET_FUNCTION(field, init)
+
+/*---------------------------------------------------------------------------
+|   Facility      :  libnform
+|   Function      :  Form_Hook field_init(const FORM *form)
+|
+|   Description   :  Retrieve field initialization routine address.
+|
+|   Return Values :  The address or NULL if no hook defined.
++--------------------------------------------------------------------------*/
+GEN_HOOK_GET_FUNCTION(field, init)
+
+/*---------------------------------------------------------------------------
+|   Facility      :  libnform
+|   Function      :  int set_field_term(FORM *form, Form_Hook f)
+|
+|   Description   :  Assigns an application defined finalization function
+|                    to be called when the form is unposted and just before
+|                    the current field changes.
+|
+|   Return Values :  E_OK      - success
++--------------------------------------------------------------------------*/
+GEN_HOOK_SET_FUNCTION(field, term)
+
+/*---------------------------------------------------------------------------
+|   Facility      :  libnform
+|   Function      :  Form_Hook field_term(const FORM *form)
+|
+|   Description   :  Retrieve field finalization routine address.
+|
+|   Return Values :  The address or NULL if no hook defined.
++--------------------------------------------------------------------------*/
+GEN_HOOK_GET_FUNCTION(field, term)
+
+/*---------------------------------------------------------------------------
+|   Facility      :  libnform
+|   Function      :  int set_form_init(FORM *form, Form_Hook f)
+|
+|   Description   :  Assigns an application defined initialization function
+|                    to be called when the form is posted and just after
+|                    a page change.
+|
+|   Return Values :  E_OK       - success
++--------------------------------------------------------------------------*/
+GEN_HOOK_SET_FUNCTION(form, init)
+
+/*---------------------------------------------------------------------------
+|   Facility      :  libnform
+|   Function      :  Form_Hook form_init(const FORM *form)
+|
+|   Description   :  Retrieve form initialization routine address.
+|
+|   Return Values :  The address or NULL if no hook defined.
++--------------------------------------------------------------------------*/
+GEN_HOOK_GET_FUNCTION(form, init)
+
+/*---------------------------------------------------------------------------
+|   Facility      :  libnform
+|   Function      :  int set_form_term(FORM *form, Form_Hook f)
+|
+|   Description   :  Assigns an application defined finalization function
+|                    to be called when the form is unposted and just before
+|                    a page change.
+|
+|   Return Values :  E_OK       - success
++--------------------------------------------------------------------------*/
+GEN_HOOK_SET_FUNCTION(form, term)
+
+/*---------------------------------------------------------------------------
+|   Facility      :  libnform
+|   Function      :  Form_Hook form_term(const FORM *form)
+|
+|   Description   :  Retrieve form finalization routine address.
+|
+|   Return Values :  The address or NULL if no hook defined.
++--------------------------------------------------------------------------*/
+GEN_HOOK_GET_FUNCTION(form, term)
+
+/* frm_hook.c ends here */