ncurses/tinfo/entries.c

   1 /****************************************************************************
   2  * Copyright (c) 2006-2008,2009 Free Software Foundation, Inc.              *
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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  *
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  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 #include <term_entry.h>
  40
  41 MODULE_ID("$Id: entries.c,v 1.16 2009/09/27 14:45:02 tom Exp $")
  42
  43 /****************************************************************************
  44  *
  45  * Entry queue handling
  46  *
  47  ****************************************************************************/
  48 /*
  49  *  The entry list is a doubly linked list with NULLs terminating the lists:
  50  *
  51  *        ---------   ---------   ---------
  52  *        |       |   |       |   |       |   offset
  53  *        |-------|   |-------|   |-------|
  54  *        |   ----+-->|   ----+-->|  NULL |   next
  55  *        |-------|   |-------|   |-------|
  56  *        |  NULL |<--+----   |<--+----   |   last
  57  *        ---------   ---------   ---------
  58  *            ^                       ^
  59  *            |                       |
  60  *            |                       |
  61  *         _nc_head                _nc_tail
  62  */
  63
  64 NCURSES_EXPORT_VAR(ENTRY *) _nc_head = 0;
  65 NCURSES_EXPORT_VAR(ENTRY *) _nc_tail = 0;
  66
  67 NCURSES_EXPORT(void)
  68 _nc_free_entry(ENTRY * headp, TERMTYPE *tterm)
  69 /* free the allocated storage consumed by the given list entry */
  70 {
  71     ENTRY *ep;
  72
  73     if ((ep = _nc_delink_entry(headp, tterm)) != 0) {
  74         free(ep);
  75     }
  76 }
  77
  78 NCURSES_EXPORT(void)
  79 _nc_free_entries(ENTRY * headp)
  80 /* free the allocated storage consumed by list entries */
  81 {
  82     (void) headp;               /* unused - _nc_head is altered here! */
  83
  84     while (_nc_head != 0) {
  85         _nc_free_termtype(&(_nc_head->tterm));
  86     }
  87 }
  88
  89 NCURSES_EXPORT(ENTRY *)
  90 _nc_delink_entry(ENTRY * headp, TERMTYPE *tterm)
  91 /* delink the allocated storage for the given list entry */
  92 {
  93     ENTRY *ep, *last;
  94
  95     for (last = 0, ep = headp; ep != 0; last = ep, ep = ep->next) {
  96         if (&(ep->tterm) == tterm) {
  97             if (last != 0) {
  98                 last->next = ep->next;
  99             }
 100             if (ep == _nc_head) {
 101                 _nc_head = ep->next;
 102             }
 103             if (ep == _nc_tail) {
 104                 _nc_tail = last;
 105             }
 106             break;
 107         }
 108     }
 109     return ep;
 110 }
 111
 112 NCURSES_EXPORT(void)
 113 _nc_leaks_tinfo(void)
 114 {
 115 #if NO_LEAKS
 116     char *s;
 117 #endif
 118
 119     T((T_CALLED("_nc_free_tinfo()")));
 120 #if NO_LEAKS
 121     _nc_free_tparm();
 122     _nc_tgetent_leaks();
 123
 124     if (TerminalOf(CURRENT_SCREEN) != 0) {
 125         del_curterm(TerminalOf(CURRENT_SCREEN));
 126     }
 127
 128     _nc_comp_captab_leaks();
 129     _nc_free_entries(_nc_head);
 130     _nc_get_type(0);
 131     _nc_first_name(0);
 132     _nc_keyname_leaks();
 133 #if BROKEN_LINKER || USE_REENTRANT
 134     _nc_names_leaks();
 135     _nc_codes_leaks();
 136     FreeIfNeeded(_nc_prescreen.real_acs_map);
 137 #endif
 138
 139     if ((s = _nc_home_terminfo()) != 0)
 140         free(s);
 141
 142 #ifdef TRACE
 143     trace(0);
 144     _nc_trace_buf(-1, 0);
 145 #endif
 146
 147 #endif /* NO_LEAKS */
 148     returnVoid;
 149 }
 150
 151 #if NO_LEAKS
 152 NCURSES_EXPORT(void)
 153 _nc_free_tinfo(int code)
 154 {
 155     _nc_leaks_tinfo();
 156     exit(code);
 157 }
 158 #endif