1 /* $OpenBSD: m_pattern.c,v 1.6 2023/10/17 09:52:10 nicm Exp $ */ 2 3 /**************************************************************************** 4 * Copyright 2020,2021 Thomas E. Dickey * 5 * Copyright 1998-2006,2010 Free Software Foundation, Inc. * 6 * * 7 * Permission is hereby granted, free of charge, to any person obtaining a * 8 * copy of this software and associated documentation files (the * 9 * "Software"), to deal in the Software without restriction, including * 10 * without limitation the rights to use, copy, modify, merge, publish, * 11 * distribute, distribute with modifications, sublicense, and/or sell * 12 * copies of the Software, and to permit persons to whom the Software is * 13 * furnished to do so, subject to the following conditions: * 14 * * 15 * The above copyright notice and this permission notice shall be included * 16 * in all copies or substantial portions of the Software. * 17 * * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 21 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 24 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 25 * * 26 * Except as contained in this notice, the name(s) of the above copyright * 27 * holders shall not be used in advertising or otherwise to promote the * 28 * sale, use or other dealings in this Software without prior written * 29 * authorization. * 30 ****************************************************************************/ 31 32 /**************************************************************************** 33 * Author: Juergen Pfeifer, 1995,1997 * 34 ****************************************************************************/ 35 36 /*************************************************************************** 37 * Module m_pattern * 38 * Pattern matching handling * 39 ***************************************************************************/ 40 41 #include "menu.priv.h" 42 43 MODULE_ID("$Id: m_pattern.c,v 1.6 2023/10/17 09:52:10 nicm Exp $") 44 45 /*--------------------------------------------------------------------------- 46 | Facility : libnmenu 47 | Function : char *menu_pattern(const MENU *menu) 48 | 49 | Description : Return the value of the pattern buffer. 50 | 51 | Return Values : NULL - if there is no pattern buffer allocated 52 | EmptyString - if there is a pattern buffer but no 53 | pattern is stored 54 | PatternString - as expected 55 +--------------------------------------------------------------------------*/ 56 MENU_EXPORT(char *) 57 menu_pattern(const MENU *menu) 58 { 59 static char empty[] = ""; 60 61 T((T_CALLED("menu_pattern(%p)"), (const void *)menu)); 62 returnPtr(menu ? (menu->pattern ? menu->pattern : empty) : 0); 63 } 64 65 /*--------------------------------------------------------------------------- 66 | Facility : libnmenu 67 | Function : int set_menu_pattern(MENU *menu, const char *p) 68 | 69 | Description : Set the match pattern for a menu and position to the 70 | first item that matches. 71 | 72 | Return Values : E_OK - success 73 | E_BAD_ARGUMENT - invalid menu or pattern pointer 74 | E_BAD_STATE - menu in user hook routine 75 | E_NOT_CONNECTED - no items connected to menu 76 | E_NO_MATCH - no item matches pattern 77 +--------------------------------------------------------------------------*/ 78 MENU_EXPORT(int) 79 set_menu_pattern(MENU *menu, const char *p) 80 { 81 ITEM *matchitem; 82 int matchpos; 83 84 T((T_CALLED("set_menu_pattern(%p,%s)"), (void *)menu, _nc_visbuf(p))); 85 86 if (!menu || !p) 87 RETURN(E_BAD_ARGUMENT); 88 89 if (!(menu->items)) 90 RETURN(E_NOT_CONNECTED); 91 92 if (menu->status & _IN_DRIVER) 93 RETURN(E_BAD_STATE); 94 95 Reset_Pattern(menu); 96 97 if (!(*p)) 98 { 99 pos_menu_cursor(menu); 100 RETURN(E_OK); 101 } 102 103 if (menu->status & _LINK_NEEDED) 104 _nc_Link_Items(menu); 105 106 matchpos = menu->toprow; 107 matchitem = menu->curitem; 108 assert(matchitem); 109 110 while (*p) 111 { 112 if (!isprint(UChar(*p)) || 113 (_nc_Match_Next_Character_In_Item_Name(menu, *p, &matchitem) != E_OK)) 114 { 115 Reset_Pattern(menu); 116 pos_menu_cursor(menu); 117 RETURN(E_NO_MATCH); 118 } 119 p++; 120 } 121 122 /* This is reached if there was a match. So we position to the new item */ 123 Adjust_Current_Item(menu, matchpos, matchitem); 124 RETURN(E_OK); 125 } 126 127 /* m_pattern.c ends here */ 128