ncurses 5.7 - patch 20100123
[ncurses.git] / ncurses / tinfo / entries.c
1 /****************************************************************************
2  * Copyright (c) 2006-2009,2010 Free Software Foundation, Inc.              *
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6  * "Software"), to deal in the Software without restriction, including      *
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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    *
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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 /****************************************************************************
30  *  Author: Thomas E. Dickey                                                *
31  *     and: Juergen Pfeifer                                                 *
32  ****************************************************************************/
33
34 #include <curses.priv.h>
35
36 #include <ctype.h>
37
38 #include <tic.h>
39
40 MODULE_ID("$Id: entries.c,v 1.17 2010/01/23 17:57:43 tom Exp $")
41
42 /****************************************************************************
43  *
44  * Entry queue handling
45  *
46  ****************************************************************************/
47 /*
48  *  The entry list is a doubly linked list with NULLs terminating the lists:
49  *
50  *        ---------   ---------   ---------
51  *        |       |   |       |   |       |   offset
52  *        |-------|   |-------|   |-------|
53  *        |   ----+-->|   ----+-->|  NULL |   next
54  *        |-------|   |-------|   |-------|
55  *        |  NULL |<--+----   |<--+----   |   last
56  *        ---------   ---------   ---------
57  *            ^                       ^
58  *            |                       |
59  *            |                       |
60  *         _nc_head                _nc_tail
61  */
62
63 NCURSES_EXPORT_VAR(ENTRY *) _nc_head = 0;
64 NCURSES_EXPORT_VAR(ENTRY *) _nc_tail = 0;
65
66 NCURSES_EXPORT(void)
67 _nc_free_entry(ENTRY * headp, TERMTYPE *tterm)
68 /* free the allocated storage consumed by the given list entry */
69 {
70     ENTRY *ep;
71
72     if ((ep = _nc_delink_entry(headp, tterm)) != 0) {
73         free(ep);
74     }
75 }
76
77 NCURSES_EXPORT(void)
78 _nc_free_entries(ENTRY * headp)
79 /* free the allocated storage consumed by list entries */
80 {
81     (void) headp;               /* unused - _nc_head is altered here! */
82
83     while (_nc_head != 0) {
84         _nc_free_termtype(&(_nc_head->tterm));
85     }
86 }
87
88 NCURSES_EXPORT(ENTRY *)
89 _nc_delink_entry(ENTRY * headp, TERMTYPE *tterm)
90 /* delink the allocated storage for the given list entry */
91 {
92     ENTRY *ep, *last;
93
94     for (last = 0, ep = headp; ep != 0; last = ep, ep = ep->next) {
95         if (&(ep->tterm) == tterm) {
96             if (last != 0) {
97                 last->next = ep->next;
98             }
99             if (ep == _nc_head) {
100                 _nc_head = ep->next;
101             }
102             if (ep == _nc_tail) {
103                 _nc_tail = last;
104             }
105             break;
106         }
107     }
108     return ep;
109 }
110
111 NCURSES_EXPORT(void)
112 _nc_leaks_tinfo(void)
113 {
114 #if NO_LEAKS
115     char *s;
116 #endif
117
118     T((T_CALLED("_nc_free_tinfo()")));
119 #if NO_LEAKS
120     _nc_free_tparm();
121     _nc_tgetent_leaks();
122
123     if (TerminalOf(CURRENT_SCREEN) != 0) {
124         del_curterm(TerminalOf(CURRENT_SCREEN));
125     }
126
127     _nc_comp_captab_leaks();
128     _nc_free_entries(_nc_head);
129     _nc_get_type(0);
130     _nc_first_name(0);
131     _nc_keyname_leaks();
132 #if BROKEN_LINKER || USE_REENTRANT
133     _nc_names_leaks();
134     _nc_codes_leaks();
135     FreeIfNeeded(_nc_prescreen.real_acs_map);
136 #endif
137
138     if ((s = _nc_home_terminfo()) != 0)
139         free(s);
140
141 #ifdef TRACE
142     trace(0);
143     _nc_trace_buf(-1, 0);
144 #endif
145
146 #endif /* NO_LEAKS */
147     returnVoid;
148 }
149
150 #if NO_LEAKS
151 NCURSES_EXPORT(void)
152 _nc_free_tinfo(int code)
153 {
154     _nc_leaks_tinfo();
155     exit(code);
156 }
157 #endif