1 /**************************************************************************** 2 * Copyright 2020 Thomas E. Dickey * 3 * Copyright 2002-2016,2017 Free Software Foundation, Inc. * 4 * * 5 * Permission is hereby granted, free of charge, to any person obtaining a * 6 * copy of this software and associated documentation files (the * 7 * "Software"), to deal in the Software without restriction, including * 8 * without limitation the rights to use, copy, modify, merge, publish, * 9 * distribute, distribute with modifications, sublicense, and/or sell * 10 * copies of the Software, and to permit persons to whom the Software is * 11 * furnished to do so, subject to the following conditions: * 12 * * 13 * The above copyright notice and this permission notice shall be included * 14 * in all copies or substantial portions of the Software. * 15 * * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 19 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 23 * * 24 * Except as contained in this notice, the name(s) of the above copyright * 25 * holders shall not be used in advertising or otherwise to promote the * 26 * sale, use or other dealings in this Software without prior written * 27 * authorization. * 28 ****************************************************************************/ 29 30 /**************************************************************************** 31 * Author: Thomas Dickey * 32 ****************************************************************************/ 33 34 /* 35 ** lib_inwstr.c 36 ** 37 ** The routines winnwstr() and winwstr(). 38 ** 39 */ 40 41 #include <curses.priv.h> 42 43 MODULE_ID("$Id: lib_inwstr.c,v 1.9 2020/02/02 23:34:34 tom Exp $") 44 45 NCURSES_EXPORT(int) 46 winnwstr(WINDOW *win, wchar_t *wstr, int n) 47 { 48 int count = 0; 49 cchar_t *text; 50 51 T((T_CALLED("winnwstr(%p,%p,%d)"), (void *) win, (void *) wstr, n)); 52 if (wstr != 0) { 53 if (win) { 54 int row, col; 55 int last = 0; 56 bool done = FALSE; 57 58 getyx(win, row, col); 59 60 text = win->_line[row].text; 61 while (count < n && !done && count != ERR) { 62 63 if (!isWidecExt(text[col])) { 64 int inx; 65 wchar_t wch; 66 67 for (inx = 0; (inx < CCHARW_MAX) 68 && ((wch = text[col].chars[inx]) != 0); 69 ++inx) { 70 if (count + 1 > n) { 71 done = TRUE; 72 if (last == 0) { 73 count = ERR; /* error if we store nothing */ 74 } else { 75 count = last; /* only store complete chars */ 76 } 77 break; 78 } 79 wstr[count++] = wch; 80 } 81 } 82 last = count; 83 if (++col > win->_maxx) { 84 break; 85 } 86 } 87 } 88 if (count > 0) { 89 wstr[count] = '\0'; 90 T(("winnwstr returns %s", _nc_viswbuf(wstr))); 91 } 92 } 93 returnCode(count); 94 } 95 96 /* 97 * X/Open says winwstr() returns OK if not ERR. If that is not a blunder, it 98 * must have a null termination on the string (see above). Unlike winnstr(), 99 * it does not define what happens for a negative count with winnwstr(). 100 */ 101 NCURSES_EXPORT(int) 102 winwstr(WINDOW *win, wchar_t *wstr) 103 { 104 int result = OK; 105 106 T((T_CALLED("winwstr(%p,%p)"), (void *) win, (void *) wstr)); 107 if (win == 0) { 108 result = ERR; 109 } else if (winnwstr(win, wstr, 110 CCHARW_MAX * (win->_maxx - win->_curx + 1)) == ERR) { 111 result = ERR; 112 } 113 returnCode(result); 114 } 115