1 /* $NetBSD: insch.c,v 1.23 2017/01/06 13:53:18 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 #ifndef lint 34 #if 0 35 static char sccsid[] = "@(#)insch.c 8.2 (Berkeley) 5/4/94"; 36 #else 37 __RCSID("$NetBSD: insch.c,v 1.23 2017/01/06 13:53:18 roy Exp $"); 38 #endif 39 #endif /* not lint */ 40 41 #include <string.h> 42 #include <stdlib.h> 43 44 #include "curses.h" 45 #include "curses_private.h" 46 47 #ifndef _CURSES_USE_MACROS 48 49 /* 50 * insch -- 51 * Do an insert-char on the line, leaving (cury, curx) unchanged. 52 */ 53 int 54 insch(chtype ch) 55 { 56 57 return winsch(stdscr, ch); 58 } 59 60 /* 61 * mvinsch -- 62 * Do an insert-char on the line at (y, x). 63 */ 64 int 65 mvinsch(int y, int x, chtype ch) 66 { 67 68 return mvwinsch(stdscr, y, x, ch); 69 } 70 71 /* 72 * mvwinsch -- 73 * Do an insert-char on the line at (y, x) in the given window. 74 */ 75 int 76 mvwinsch(WINDOW *win, int y, int x, chtype ch) 77 { 78 79 if (wmove(win, y, x) == ERR) 80 return ERR; 81 82 return winsch(stdscr, ch); 83 } 84 85 #endif 86 87 /* 88 * winsch -- 89 * Do an insert-char on the line, leaving (cury, curx) unchanged. 90 */ 91 int 92 winsch(WINDOW *win, chtype ch) 93 { 94 __LDATA *end, *temp1, *temp2; 95 attr_t attr; 96 97 if (__using_color) 98 attr = win->battr & __COLOR; 99 else 100 attr = 0; 101 end = &win->alines[win->cury]->line[win->curx]; 102 temp1 = &win->alines[win->cury]->line[win->maxx - 1]; 103 temp2 = temp1 - 1; 104 while (temp1 > end) { 105 (void)memcpy(temp1, temp2, sizeof(__LDATA)); 106 temp1--, temp2--; 107 } 108 temp1->ch = (wchar_t)ch & __CHARTEXT; 109 if (temp1->ch == ' ') 110 temp1->ch = win->bch; 111 temp1->attr = (attr_t) ch & __ATTRIBUTES; 112 if (temp1->attr & __COLOR) 113 temp1->attr |= (win->battr & ~__COLOR); 114 else 115 temp1->attr |= win->battr; 116 #ifdef HAVE_WCHAR 117 if (_cursesi_copy_nsp(win->bnsp, temp1) == ERR) 118 return ERR; 119 SET_WCOL(*temp1, 1); 120 #endif /* HAVE_WCHAR */ 121 __touchline(win, (int)win->cury, (int)win->curx, (int)win->maxx - 1); 122 if (win->cury == LINES - 1 && 123 (win->alines[LINES - 1]->line[COLS - 1].ch != ' ' || 124 win->alines[LINES - 1]->line[COLS - 1].attr != attr)) { 125 if (win->flags & __SCROLLOK) { 126 wrefresh(win); 127 scroll(win); 128 win->cury--; 129 } else 130 return ERR; 131 } 132 return OK; 133 } 134