1 /* $NetBSD: curses.c,v 1.24 2010/02/03 15:34:40 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 1.24 2010/02/03 15:34:40 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 int COLS; /* Columns on the screen. */ 68 int LINES; /* Lines on the screen. */ 69 int COLORS; /* Maximum colors on the screen */ 70 int COLOR_PAIRS = 0; /* Maximum color pairs on the screen */ 71 int My_term = 0; /* Use Def_term regardless. */ 72 const char *Def_term = "unknown"; /* Default terminal type. */ 73 char __GT; /* Gtty indicates tabs. */ 74 char __NONL; /* Term can't hack LF doing a CR. */ 75 char __UPPERCASE; /* Terminal is uppercase only. */ 76 77 #ifdef HAVE_WCHAR 78 /* 79 * Copy the non-spacing character list (src_nsp) to the given character, 80 * allocate or free storage as required. 81 */ 82 int 83 _cursesi_copy_nsp(nschar_t *src_nsp, struct __ldata *ch) 84 { 85 nschar_t *np, *tnp, *pnp; 86 87 pnp = NULL; 88 np = src_nsp; 89 if (np) { 90 tnp = ch->nsp; 91 while (np) { 92 if (tnp) { 93 tnp->ch = np->ch; 94 pnp = tnp; 95 tnp = tnp->next; 96 } else { 97 tnp = (nschar_t *)malloc(sizeof(nschar_t)); 98 if (!tnp) 99 return ERR; 100 tnp->ch = np->ch; 101 pnp->next = tnp; 102 tnp->next = NULL; 103 pnp = tnp; 104 tnp = NULL; 105 } 106 np = np->next; 107 } 108 np = tnp; 109 if (np) { 110 pnp->next = NULL; 111 __cursesi_free_nsp(np); 112 } 113 } else { 114 if (ch->nsp) { 115 __cursesi_free_nsp(ch->nsp); 116 ch->nsp = NULL; 117 } 118 } 119 120 return OK; 121 } 122 123 /* 124 * Free the storage associated with a non-spacing character - traverse the 125 * linked list until all storage is done. 126 */ 127 void 128 __cursesi_free_nsp(nschar_t *inp) 129 { 130 nschar_t *tnp, *np; 131 132 np = inp; 133 if (np) { 134 while (np) { 135 tnp = np->next; 136 free(np); 137 np = tnp; 138 } 139 } 140 } 141 142 /* 143 * Traverse all the cells in the given window free'ing the non-spacing 144 * character storage. 145 */ 146 void 147 __cursesi_win_free_nsp(WINDOW *win) 148 { 149 int i, j; 150 __LDATA *sp; 151 152 for (i = 0; i < win->maxy; i++) { 153 for (sp = win->alines[i]->line, j = 0; j < win->maxx; 154 j++, sp++) { 155 __cursesi_free_nsp(sp->nsp); 156 } 157 } 158 } 159 160 #endif 161