1/* $OpenBSD: lib_inwstr.c,v 1.2 2023/10/17 09:52:09 nicm Exp $ */ 2 3/**************************************************************************** 4 * Copyright 2020 Thomas E. Dickey * 5 * Copyright 2002-2016,2017 Free Software Foundation, Inc. * 6 * * 7 * Permission is hereby granted, free of charge, to any person obtaining a * 8 * copy of this software and associated documentation files (the * 9 * "Software"), to deal in the Software without restriction, including * 10 * without limitation the rights to use, copy, modify, merge, publish, * 11 * distribute, distribute with modifications, sublicense, and/or sell * 12 * copies of the Software, and to permit persons to whom the Software is * 13 * furnished to do so, subject to the following conditions: * 14 * * 15 * The above copyright notice and this permission notice shall be included * 16 * in all copies or substantial portions of the Software. * 17 * * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 21 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 24 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 25 * * 26 * Except as contained in this notice, the name(s) of the above copyright * 27 * holders shall not be used in advertising or otherwise to promote the * 28 * sale, use or other dealings in this Software without prior written * 29 * authorization. * 30 ****************************************************************************/ 31 32/**************************************************************************** 33 * Author: Thomas Dickey * 34 ****************************************************************************/ 35 36/* 37** lib_inwstr.c 38** 39** The routines winnwstr() and winwstr(). 40** 41*/ 42 43#include <curses.priv.h> 44 45MODULE_ID("$Id: lib_inwstr.c,v 1.2 2023/10/17 09:52:09 nicm Exp $") 46 47NCURSES_EXPORT(int) 48winnwstr(WINDOW *win, wchar_t *wstr, int n) 49{ 50 int count = 0; 51 cchar_t *text; 52 53 T((T_CALLED("winnwstr(%p,%p,%d)"), (void *) win, (void *) wstr, n)); 54 if (wstr != 0) { 55 if (win) { 56 int row, col; 57 int last = 0; 58 bool done = FALSE; 59 60 getyx(win, row, col); 61 62 text = win->_line[row].text; 63 while (count < n && !done && count != ERR) { 64 65 if (!isWidecExt(text[col])) { 66 int inx; 67 wchar_t wch; 68 69 for (inx = 0; (inx < CCHARW_MAX) 70 && ((wch = text[col].chars[inx]) != 0); 71 ++inx) { 72 if (count + 1 > n) { 73 done = TRUE; 74 if (last == 0) { 75 count = ERR; /* error if we store nothing */ 76 } else { 77 count = last; /* only store complete chars */ 78 } 79 break; 80 } 81 wstr[count++] = wch; 82 } 83 } 84 last = count; 85 if (++col > win->_maxx) { 86 break; 87 } 88 } 89 } 90 if (count > 0) { 91 wstr[count] = '\0'; 92 T(("winnwstr returns %s", _nc_viswbuf(wstr))); 93 } 94 } 95 returnCode(count); 96} 97 98/* 99 * X/Open says winwstr() returns OK if not ERR. If that is not a blunder, it 100 * must have a null termination on the string (see above). Unlike winnstr(), 101 * it does not define what happens for a negative count with winnwstr(). 102 */ 103NCURSES_EXPORT(int) 104winwstr(WINDOW *win, wchar_t *wstr) 105{ 106 int result = OK; 107 108 T((T_CALLED("winwstr(%p,%p)"), (void *) win, (void *) wstr)); 109 if (win == 0) { 110 result = ERR; 111 } else if (winnwstr(win, wstr, 112 CCHARW_MAX * (win->_maxx - win->_curx + 1)) == ERR) { 113 result = ERR; 114 } 115 returnCode(result); 116} 117