1 /**************************************************************************** 2 * Copyright 2020 Thomas E. Dickey * 3 * Copyright 1998-2006,2010 Free Software Foundation, Inc. * 4 * * 5 * Permission is hereby granted, free of charge, to any person obtaining a * 6 * copy of this software and associated documentation files (the * 7 * "Software"), to deal in the Software without restriction, including * 8 * without limitation the rights to use, copy, modify, merge, publish, * 9 * distribute, distribute with modifications, sublicense, and/or sell * 10 * copies of the Software, and to permit persons to whom the Software is * 11 * furnished to do so, subject to the following conditions: * 12 * * 13 * The above copyright notice and this permission notice shall be included * 14 * in all copies or substantial portions of the Software. * 15 * * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 19 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 23 * * 24 * Except as contained in this notice, the name(s) of the above copyright * 25 * holders shall not be used in advertising or otherwise to promote the * 26 * sale, use or other dealings in this Software without prior written * 27 * authorization. * 28 ****************************************************************************/ 29 30 /**************************************************************************** 31 * Author: Juergen Pfeifer, 1995,1997 * 32 ****************************************************************************/ 33 34 /*************************************************************************** 35 * Module m_pattern * 36 * Pattern matching handling * 37 ***************************************************************************/ 38 39 #include "menu.priv.h" 40 41 MODULE_ID("$Id: m_pattern.c,v 1.17 2020/02/02 23:34:34 tom Exp $") 42 43 /*--------------------------------------------------------------------------- 44 | Facility : libnmenu 45 | Function : char *menu_pattern(const MENU *menu) 46 | 47 | Description : Return the value of the pattern buffer. 48 | 49 | Return Values : NULL - if there is no pattern buffer allocated 50 | EmptyString - if there is a pattern buffer but no 51 | pattern is stored 52 | PatternString - as expected 53 +--------------------------------------------------------------------------*/ 54 NCURSES_EXPORT(char *) 55 menu_pattern(const MENU * menu) 56 { 57 static char empty[] = ""; 58 59 T((T_CALLED("menu_pattern(%p)"), (const void *)menu)); 60 returnPtr(menu ? (menu->pattern ? menu->pattern : empty) : 0); 61 } 62 63 /*--------------------------------------------------------------------------- 64 | Facility : libnmenu 65 | Function : int set_menu_pattern(MENU *menu, const char *p) 66 | 67 | Description : Set the match pattern for a menu and position to the 68 | first item that matches. 69 | 70 | Return Values : E_OK - success 71 | E_BAD_ARGUMENT - invalid menu or pattern pointer 72 | E_BAD_STATE - menu in user hook routine 73 | E_NOT_CONNECTED - no items connected to menu 74 | E_NO_MATCH - no item matches pattern 75 +--------------------------------------------------------------------------*/ 76 NCURSES_EXPORT(int) 77 set_menu_pattern(MENU * menu, const char *p) 78 { 79 ITEM *matchitem; 80 int matchpos; 81 82 T((T_CALLED("set_menu_pattern(%p,%s)"), (void *)menu, _nc_visbuf(p))); 83 84 if (!menu || !p) 85 RETURN(E_BAD_ARGUMENT); 86 87 if (!(menu->items)) 88 RETURN(E_NOT_CONNECTED); 89 90 if (menu->status & _IN_DRIVER) 91 RETURN(E_BAD_STATE); 92 93 Reset_Pattern(menu); 94 95 if (!(*p)) 96 { 97 pos_menu_cursor(menu); 98 RETURN(E_OK); 99 } 100 101 if (menu->status & _LINK_NEEDED) 102 _nc_Link_Items(menu); 103 104 matchpos = menu->toprow; 105 matchitem = menu->curitem; 106 assert(matchitem); 107 108 while (*p) 109 { 110 if (!isprint(UChar(*p)) || 111 (_nc_Match_Next_Character_In_Item_Name(menu, *p, &matchitem) != E_OK)) 112 { 113 Reset_Pattern(menu); 114 pos_menu_cursor(menu); 115 RETURN(E_NO_MATCH); 116 } 117 p++; 118 } 119 120 /* This is reached if there was a match. So we position to the new item */ 121 Adjust_Current_Item(menu, matchpos, matchitem); 122 RETURN(E_OK); 123 } 124 125 /* m_pattern.c ends here */ 126