1 /****************************************************************************
2 * Copyright 2020,2021 Thomas E. Dickey *
3 * Copyright 1998-2006,2010 Free Software Foundation, Inc. *
4 * *
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6 * copy of this software and associated documentation files (the *
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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: *
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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 *
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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 1.20 2021/06/17 21:20:30 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 +--------------------------------------------------------------------------*/
MENU_EXPORT(char *)54 MENU_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 MENU_EXPORT(int)
set_menu_pattern(MENU * menu,const char * p)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