1 /* $NetBSD: curses.c,v 1.28 2017/01/31 09:17:53 roy Exp $ */ 2 3 /* 4 * Copyright (c) 1981, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #include <stdlib.h> 34 #ifndef lint 35 #if 0 36 static char sccsid[] = "@(#)curses.c 8.3 (Berkeley) 5/4/94"; 37 #else 38 __RCSID("$NetBSD: curses.c,v 1.28 2017/01/31 09:17:53 roy Exp $"); 39 #endif 40 #endif /* not lint */ 41 42 #include "curses.h" 43 #include "curses_private.h" 44 45 /* Private. */ 46 int __echoit = 1; /* If stty indicates ECHO. */ 47 int __pfast; 48 int __rawmode = 0; /* If stty indicates RAW mode. */ 49 int __noqch = 0; 50 /* If terminal doesn't have 51 * insert/delete line capabilities 52 * for quick change on refresh. 53 */ 54 char __CA; 55 56 /* 57 * Public. 58 * 59 * XXX 60 * UPPERCASE isn't used by libcurses, and is left for backward 61 * compatibility only. 62 */ 63 WINDOW *curscr; /* Current screen. */ 64 WINDOW *stdscr; /* Standard screen. */ 65 WINDOW *__virtscr; /* Virtual screen (for doupdate()). */ 66 SCREEN *_cursesi_screen; /* the current screen we are using */ 67 volatile bool _reentrant; /* If true, some global vars are ro. */ 68 int COLS; /* Columns on the screen. */ 69 int LINES; /* Lines on the screen. */ 70 int ESCDELAY; /* ms delay between keys for esc seq */ 71 int TABSIZE; /* Size of a tab. */ 72 int COLORS; /* Maximum colors on the screen */ 73 int COLOR_PAIRS = 0; /* Maximum color pairs on the screen */ 74 int My_term = 0; /* Use Def_term regardless. */ 75 const char *Def_term = "unknown"; /* Default terminal type. */ 76 char __GT; /* Gtty indicates tabs. */ 77 char __NONL; /* Term can't hack LF doing a CR. */ 78 char __UPPERCASE; /* Terminal is uppercase only. */ 79 80 #ifdef HAVE_WCHAR 81 /* 82 * Copy the non-spacing character list (src_nsp) to the given character, 83 * allocate or free storage as required. 84 */ 85 int 86 _cursesi_copy_nsp(nschar_t *src_nsp, struct __ldata *ch) 87 { 88 nschar_t *np, *tnp, *pnp; 89 90 pnp = NULL; 91 np = src_nsp; 92 if (np) { 93 tnp = ch->nsp; 94 while (np) { 95 if (tnp) { 96 tnp->ch = np->ch; 97 pnp = tnp; 98 tnp = tnp->next; 99 } else { 100 tnp = malloc(sizeof(nschar_t)); 101 if (!tnp) 102 return ERR; 103 tnp->ch = np->ch; 104 pnp->next = tnp; 105 tnp->next = NULL; 106 pnp = tnp; 107 tnp = NULL; 108 } 109 np = np->next; 110 } 111 np = tnp; 112 if (np) { 113 pnp->next = NULL; 114 __cursesi_free_nsp(np); 115 } 116 } else { 117 if (ch->nsp) { 118 __cursesi_free_nsp(ch->nsp); 119 ch->nsp = NULL; 120 } 121 } 122 123 return OK; 124 } 125 126 /* 127 * Free the storage associated with a non-spacing character - traverse the 128 * linked list until all storage is done. 129 */ 130 void 131 __cursesi_free_nsp(nschar_t *inp) 132 { 133 nschar_t *tnp, *np; 134 135 np = inp; 136 if (np) { 137 while (np) { 138 tnp = np->next; 139 free(np); 140 np = tnp; 141 } 142 } 143 } 144 145 /* 146 * Traverse all the cells in the given window free'ing the non-spacing 147 * character storage. 148 */ 149 void 150 __cursesi_win_free_nsp(WINDOW *win) 151 { 152 int i, j; 153 __LDATA *sp; 154 155 for (i = 0; i < win->maxy; i++) { 156 for (sp = win->alines[i]->line, j = 0; j < win->maxx; 157 j++, sp++) { 158 __cursesi_free_nsp(sp->nsp); 159 } 160 } 161 } 162 163 #endif 164