1 /* $NetBSD: in_wch.c,v 1.3 2009/07/22 16:57:14 roy Exp $ */ 2 3 /* 4 * Copyright (c) 2005 The NetBSD Foundation Inc. 5 * All rights reserved. 6 * 7 * This code is derived from code donated to the NetBSD Foundation 8 * by Ruibiao Qiu <ruibiao@arl.wustl.edu,ruibiao@gmail.com>. 9 * 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the NetBSD Foundation nor the names of its 20 * contributors may be used to endorse or promote products derived 21 * from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND 24 * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, 25 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 26 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #include <sys/cdefs.h> 38 #ifndef lint 39 __RCSID("$NetBSD: in_wch.c,v 1.3 2009/07/22 16:57:14 roy Exp $"); 40 #endif /* not lint */ 41 42 #include "curses.h" 43 #include "curses_private.h" 44 45 /* 46 * in_wch -- 47 * Return wide character at cursor position from stdscr. 48 */ 49 int 50 in_wch(cchar_t *wcval) 51 { 52 #ifndef HAVE_WCHAR 53 return ERR; 54 #else 55 return win_wch(stdscr, wcval); 56 #endif /* HAVE_WCHAR */ 57 } 58 59 /* 60 * mvin_wch -- 61 * Return wide character at position (y, x) from stdscr. 62 */ 63 int 64 mvin_wch(int y, int x, cchar_t *wcval) 65 { 66 #ifndef HAVE_WCHAR 67 return ERR; 68 #else 69 return mvwin_wch(stdscr, y, x, wcval); 70 #endif /* HAVE_WCHAR */ 71 } 72 73 /* 74 * mvwin_wch -- 75 * Return wide character at position (y, x) from the given window. 76 */ 77 int 78 mvwin_wch(WINDOW *win, int y, int x, cchar_t *wcval) 79 { 80 #ifndef HAVE_WCHAR 81 return ERR; 82 #else 83 if (wmove(win, y, x) == ERR) 84 return ERR; 85 86 return win_wch(win, wcval); 87 #endif /* HAVE_WCHAR */ 88 } 89 90 /* 91 * win_wch -- 92 * Return wide character at cursor position. 93 */ 94 int 95 win_wch(WINDOW *win, cchar_t *wcval) 96 { 97 #ifndef HAVE_WCHAR 98 return ERR; 99 #else 100 nschar_t *np; 101 __LDATA *lp = &win->alines[ win->cury ]->line[ win->curx ]; 102 int cw = WCOL( *lp ); 103 104 if ( cw < 0 ) 105 lp += cw; 106 wcval->vals[ 0 ] = lp->ch; 107 wcval->attributes = lp->attr; 108 wcval->elements = 1; 109 np = lp->nsp; 110 if (np) { 111 do { 112 wcval->vals[ wcval->elements++ ] = np->ch; 113 np = np-> next; 114 } while ( np ); 115 } 116 117 return OK; 118 #endif /* HAVE_WCHAR */ 119 } 120