init_keytry.c revision 262629 
1/****************************************************************************
2 * Copyright (c) 1999-2009,2010 Free Software Foundation, Inc.              *
3 *                                                                          *
4 * Permission is hereby granted, free of charge, to any person obtaining a  *
5 * copy of this software and associated documentation files (the            *
6 * "Software"), to deal in the Software without restriction, including      *
7 * without limitation the rights to use, copy, modify, merge, publish,      *
8 * distribute, distribute with modifications, sublicense, and/or sell       *
9 * copies of the Software, and to permit persons to whom the Software is    *
10 * furnished to do so, subject to the following conditions:                 *
11 *                                                                          *
12 * The above copyright notice and this permission notice shall be included  *
13 * in all copies or substantial portions of the Software.                   *
14 *                                                                          *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
22 *                                                                          *
23 * Except as contained in this notice, the name(s) of the above copyright   *
24 * holders shall not be used in advertising or otherwise to promote the     *
25 * sale, use or other dealings in this Software without prior written       *
26 * authorization.                                                           *
27 ****************************************************************************/
28
29#include <curses.priv.h>
30#include <tic.h>		/* struct tinfo_fkeys */
31
32MODULE_ID("$Id: init_keytry.c,v 1.17 2010/04/24 22:29:56 tom Exp $")
33
34/*
35**      _nc_init_keytry()
36**
37**      Construct the try for the current terminal's keypad keys.
38**
39*/
40
41/*
42 * Internal entrypoints use SCREEN* parameter to obtain capabilities rather
43 * than cur_term.
44 */
45#undef CUR
46#define CUR SP_TERMTYPE
47
48#if	BROKEN_LINKER
49#undef	_nc_tinfo_fkeys
50#endif
51
52/* LINT_PREPRO
53#if 0*/
54#include <init_keytry.h>
55/* LINT_PREPRO
56#endif*/
57
58#if	BROKEN_LINKER
59const struct tinfo_fkeys *
60_nc_tinfo_fkeysf(void)
61{
62    return _nc_tinfo_fkeys;
63}
64#endif
65
66NCURSES_EXPORT(void)
67_nc_init_keytry(SCREEN *sp)
68{
69    unsigned n;
70
71    /* The sp->_keytry value is initialized in newterm(), where the sp
72     * structure is created, because we can not tell where keypad() or
73     * mouse_activate() (which will call keyok()) are first called.
74     */
75
76    if (sp != 0) {
77	for (n = 0; _nc_tinfo_fkeys[n].code; n++) {
78	    if (_nc_tinfo_fkeys[n].offset < STRCOUNT) {
79		(void) _nc_add_to_try(&(sp->_keytry),
80				      CUR Strings[_nc_tinfo_fkeys[n].offset],
81				      _nc_tinfo_fkeys[n].code);
82	    }
83	}
84#if NCURSES_XNAMES
85	/*
86	 * Add any of the extended strings to the tries if their name begins
87	 * with 'k', i.e., they follow the convention of other terminfo key
88	 * names.
89	 */
90	{
91	    TERMTYPE *tp = &(sp->_term->type);
92	    for (n = STRCOUNT; n < NUM_STRINGS(tp); ++n) {
93		const char *name = ExtStrname(tp, (int) n, strnames);
94		char *value = tp->Strings[n];
95		if (name != 0
96		    && *name == 'k'
97		    && value != 0
98		    && NCURSES_SP_NAME(key_defined) (NCURSES_SP_ARGx
99						     value) == 0) {
100		    (void) _nc_add_to_try(&(sp->_keytry),
101					  value,
102					  n - STRCOUNT + KEY_MAX);
103		}
104	    }
105	}
106#endif
107#ifdef TRACE
108	_nc_trace_tries(sp->_keytry);
109#endif
110    }
111}
112