ncurses 4.2

[ncurses.git] / menu / m_pattern.c

diff --git a/menu/m_pattern.c b/menu/m_pattern.c
new file mode 100644 (file)
index 0000000..54d72a5
--- /dev/null
+++ b/menu/m_pattern.c
@@ -0,0 +1,117 @@
+/****************************************************************************
+ * Copyright (c) 1998 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 <Juergen.Pfeifer@T-Online.de> 1995,1997        *
+ ****************************************************************************/
+
+/***************************************************************************
+* Module m_pattern                                                         *
+* Pattern matching handling                                                *
+***************************************************************************/
+
+#include "menu.priv.h"
+
+MODULE_ID("$Id: m_pattern.c,v 1.2 1998/02/11 12:13:50 tom Exp $")
+
+/*---------------------------------------------------------------------------
+|   Facility      :  libnmenu  
+|   Function      :  char *menu_pattern(const MENU *menu)
+|   
+|   Description   :  Return the value of the pattern buffer.
+|
+|   Return Values :  NULL          - if there is no pattern buffer allocated
+|                    EmptyString   - if there is a pattern buffer but no
+|                                    pattern is stored
+|                    PatternString - as expected
++--------------------------------------------------------------------------*/
+char *menu_pattern(const MENU * menu)
+{
+  return (menu ? (menu->pattern ? menu->pattern : "") : (char *)0);
+}
+
+/*---------------------------------------------------------------------------
+|   Facility      :  libnmenu  
+|   Function      :  int set_menu_pattern(MENU *menu, const char *p)
+|   
+|   Description   :  Set the match pattern for a menu and position to the
+|                    first item that matches.
+|
+|   Return Values :  E_OK              - success
+|                    E_BAD_ARGUMENT    - invalid menu or pattern pointer
+|                    E_NOT_CONNECTED   - no items connected to menu
+|                    E_BAD_STATE       - menu in user hook routine
+|                    E_NO_MATCH        - no item matches pattern
++--------------------------------------------------------------------------*/
+int set_menu_pattern(MENU *menu, const char *p)
+{
+  ITEM *matchitem;
+  int   matchpos;
+  
+  if (!menu || !p)     
+    RETURN(E_BAD_ARGUMENT);
+  
+  if (!(menu->items))
+    RETURN(E_NOT_CONNECTED);
+  
+  if ( menu->status & _IN_DRIVER )
+    RETURN(E_BAD_STATE);
+  
+  Reset_Pattern(menu);
+  
+  if (!(*p))
+    {
+      pos_menu_cursor(menu);
+      RETURN(E_OK);
+    }
+  
+  if (menu->status & _LINK_NEEDED) 
+    _nc_Link_Items(menu);
+  
+  matchpos  = menu->toprow;
+  matchitem = menu->curitem;
+  assert(matchitem);
+  
+  while(*p)
+    {
+      if ( !isprint(*p) || 
+         (_nc_Match_Next_Character_In_Item_Name(menu,*p,&matchitem) != E_OK) )
+       {
+         Reset_Pattern(menu);
+         pos_menu_cursor(menu);
+         RETURN(E_NO_MATCH);
+       }
+      p++;
+    }                  
+  
+  /* This is reached if there was a match. So we position to the new item */
+  Adjust_Current_Item(menu,matchpos,matchitem);
+  RETURN(E_OK);
+}
+
+/* m_pattern.c ends here */