xref: /onnv-gate/usr/src/lib/libeti/menu/common/pattern.c (revision 0:68f95e015346)
1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate  * CDDL HEADER START
3*0Sstevel@tonic-gate  *
4*0Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*0Sstevel@tonic-gate  * with the License.
8*0Sstevel@tonic-gate  *
9*0Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate  * and limitations under the License.
13*0Sstevel@tonic-gate  *
14*0Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate  *
20*0Sstevel@tonic-gate  * CDDL HEADER END
21*0Sstevel@tonic-gate  */
22*0Sstevel@tonic-gate /*	Copyright (c) 1988 AT&T	*/
23*0Sstevel@tonic-gate /*	  All Rights Reserved  	*/
24*0Sstevel@tonic-gate 
25*0Sstevel@tonic-gate 
26*0Sstevel@tonic-gate /*
27*0Sstevel@tonic-gate  * Copyright (c) 1997, by Sun Mircrosystems, Inc.
28*0Sstevel@tonic-gate  * All rights reserved.
29*0Sstevel@tonic-gate  */
30*0Sstevel@tonic-gate 
31*0Sstevel@tonic-gate #pragma	ident	"%Z%%M%	%I%	%E% SMI"	/* SVr4.0 1.13	*/
32*0Sstevel@tonic-gate 
33*0Sstevel@tonic-gate /*LINTLIBRARY*/
34*0Sstevel@tonic-gate 
35*0Sstevel@tonic-gate #include <sys/types.h>
36*0Sstevel@tonic-gate #include <ctype.h>
37*0Sstevel@tonic-gate #include "private.h"
38*0Sstevel@tonic-gate 
39*0Sstevel@tonic-gate static int
substr(MENU * m,char * s1,char * s2)40*0Sstevel@tonic-gate substr(MENU *m, char *s1, char *s2)
41*0Sstevel@tonic-gate {
42*0Sstevel@tonic-gate 	if (IgnoreCase(m)) {
43*0Sstevel@tonic-gate 		while (*s1 && *s2) {
44*0Sstevel@tonic-gate 			if (toupper(*s1++) != toupper(*s2++)) {
45*0Sstevel@tonic-gate 				return (FALSE);
46*0Sstevel@tonic-gate 			}
47*0Sstevel@tonic-gate 		}
48*0Sstevel@tonic-gate 	} else {
49*0Sstevel@tonic-gate 		while (*s1 && *s2) {
50*0Sstevel@tonic-gate 			if (*s1++ != *s2++) {
51*0Sstevel@tonic-gate 				return (FALSE);
52*0Sstevel@tonic-gate 			}
53*0Sstevel@tonic-gate 		}
54*0Sstevel@tonic-gate 	}
55*0Sstevel@tonic-gate 	if (*s1) {
56*0Sstevel@tonic-gate 		return (FALSE);
57*0Sstevel@tonic-gate 	}
58*0Sstevel@tonic-gate 	return (TRUE);
59*0Sstevel@tonic-gate }
60*0Sstevel@tonic-gate 
61*0Sstevel@tonic-gate int
_match(MENU * m,char c,ITEM ** current)62*0Sstevel@tonic-gate _match(MENU *m, char c, ITEM **current)
63*0Sstevel@tonic-gate {
64*0Sstevel@tonic-gate 	int i, j;
65*0Sstevel@tonic-gate 	int found;
66*0Sstevel@tonic-gate 	/*
67*0Sstevel@tonic-gate 	 * Indicates search has cycled past the current item.  If the current
68*0Sstevel@tonic-gate 	 * item is matched after cycled is true then NO_MATCH results.
69*0Sstevel@tonic-gate 	 */
70*0Sstevel@tonic-gate 	int cycled;
71*0Sstevel@tonic-gate 
72*0Sstevel@tonic-gate 	/* If a backspace is encountered then search backward from the */
73*0Sstevel@tonic-gate 	/* current item.  Otherwise, search forward from the current item. */
74*0Sstevel@tonic-gate 
75*0Sstevel@tonic-gate 	i = Index(*current);
76*0Sstevel@tonic-gate 	if (c && c != '\b') {		/* c could be null */
77*0Sstevel@tonic-gate 		if (Pindex(m)+1 > MaxName(m)) {
78*0Sstevel@tonic-gate 			return (E_NO_MATCH);
79*0Sstevel@tonic-gate 		}
80*0Sstevel@tonic-gate 		IthPattern(m, Pindex(m)) = c;
81*0Sstevel@tonic-gate 		IthPattern(m, ++Pindex(m)) = '\0';
82*0Sstevel@tonic-gate 		if (--i < 0) {
83*0Sstevel@tonic-gate 			i = Nitems(m)-1;
84*0Sstevel@tonic-gate 		}
85*0Sstevel@tonic-gate 	}
86*0Sstevel@tonic-gate 
87*0Sstevel@tonic-gate 	j = i;
88*0Sstevel@tonic-gate 	found = FALSE;
89*0Sstevel@tonic-gate 	cycled = FALSE;
90*0Sstevel@tonic-gate 
91*0Sstevel@tonic-gate 	do {
92*0Sstevel@tonic-gate 		if (c == '\b') {
93*0Sstevel@tonic-gate 			if (--i < 0) {
94*0Sstevel@tonic-gate 				i = Nitems(m)-1;
95*0Sstevel@tonic-gate 			}
96*0Sstevel@tonic-gate 		} else {
97*0Sstevel@tonic-gate 			if (++i >= Nitems(m)) {
98*0Sstevel@tonic-gate 				i = 0;
99*0Sstevel@tonic-gate 			}
100*0Sstevel@tonic-gate 		}
101*0Sstevel@tonic-gate 		if (substr(m, Pattern(m), Name(IthItem(m, i)))) {
102*0Sstevel@tonic-gate 			found = TRUE;
103*0Sstevel@tonic-gate 			break;
104*0Sstevel@tonic-gate 		}
105*0Sstevel@tonic-gate 		cycled = TRUE;
106*0Sstevel@tonic-gate 	} while (i != j);
107*0Sstevel@tonic-gate 
108*0Sstevel@tonic-gate 	if (found) {
109*0Sstevel@tonic-gate 		if (i == Index(*current) && cycled) {
110*0Sstevel@tonic-gate 			return (E_NO_MATCH);
111*0Sstevel@tonic-gate 		}
112*0Sstevel@tonic-gate 		*current = IthItem(m, i);
113*0Sstevel@tonic-gate 	} else {
114*0Sstevel@tonic-gate 		if (c && c != '\b') {
115*0Sstevel@tonic-gate 			Pindex(m) -= 1;
116*0Sstevel@tonic-gate 			IthPattern(m, Pindex(m)) = '\0';
117*0Sstevel@tonic-gate 		}
118*0Sstevel@tonic-gate 		return (E_NO_MATCH);
119*0Sstevel@tonic-gate 	}
120*0Sstevel@tonic-gate 	return (E_OK);
121*0Sstevel@tonic-gate }
122*0Sstevel@tonic-gate 
123*0Sstevel@tonic-gate char *
menu_pattern(MENU * m)124*0Sstevel@tonic-gate menu_pattern(MENU *m)
125*0Sstevel@tonic-gate {
126*0Sstevel@tonic-gate 	if (m) {
127*0Sstevel@tonic-gate 		if (Pattern(m)) {
128*0Sstevel@tonic-gate 			return (Pattern(m));
129*0Sstevel@tonic-gate 		} else {
130*0Sstevel@tonic-gate 			return ("");
131*0Sstevel@tonic-gate 		}
132*0Sstevel@tonic-gate 	} else {
133*0Sstevel@tonic-gate 		return (NULL);
134*0Sstevel@tonic-gate 	}
135*0Sstevel@tonic-gate }
136*0Sstevel@tonic-gate 
137*0Sstevel@tonic-gate int
set_menu_pattern(MENU * m,char * s)138*0Sstevel@tonic-gate set_menu_pattern(MENU *m, char *s)
139*0Sstevel@tonic-gate {
140*0Sstevel@tonic-gate 	int top;
141*0Sstevel@tonic-gate 	ITEM *current;
142*0Sstevel@tonic-gate 
143*0Sstevel@tonic-gate 	if (!m || !s) {
144*0Sstevel@tonic-gate 		return (E_BAD_ARGUMENT);
145*0Sstevel@tonic-gate 	}
146*0Sstevel@tonic-gate 	if (!Items(m)) {
147*0Sstevel@tonic-gate 		return (E_NOT_CONNECTED);
148*0Sstevel@tonic-gate 	}
149*0Sstevel@tonic-gate 	if (Indriver(m)) {
150*0Sstevel@tonic-gate 		return (E_BAD_STATE);
151*0Sstevel@tonic-gate 	}
152*0Sstevel@tonic-gate 
153*0Sstevel@tonic-gate 	IthPattern(m, 0) = '\0';
154*0Sstevel@tonic-gate 	Pindex(m) = 0;
155*0Sstevel@tonic-gate 
156*0Sstevel@tonic-gate 	if (*s == '\0') {
157*0Sstevel@tonic-gate 		_position_cursor(m);
158*0Sstevel@tonic-gate 		return (E_OK);
159*0Sstevel@tonic-gate 	}
160*0Sstevel@tonic-gate 	if (LinkNeeded(m)) {
161*0Sstevel@tonic-gate 		_link_items(m);
162*0Sstevel@tonic-gate 	}
163*0Sstevel@tonic-gate 
164*0Sstevel@tonic-gate 	top = Top(m);
165*0Sstevel@tonic-gate 	current = Current(m);
166*0Sstevel@tonic-gate 
167*0Sstevel@tonic-gate 	for (; *s; s++) {
168*0Sstevel@tonic-gate 		if (_match(m, *s, &current) != E_OK) {
169*0Sstevel@tonic-gate 			IthPattern(m, 0) = '\0';
170*0Sstevel@tonic-gate 			Pindex(m) = 0;
171*0Sstevel@tonic-gate 			_position_cursor(m);
172*0Sstevel@tonic-gate 			return (E_NO_MATCH);
173*0Sstevel@tonic-gate 		}
174*0Sstevel@tonic-gate 	}
175*0Sstevel@tonic-gate 	_chk_current(m, &top, current);
176*0Sstevel@tonic-gate 	_affect_change(m, top, current);
177*0Sstevel@tonic-gate 	return (E_OK);
178*0Sstevel@tonic-gate }
179