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122 lines
4.2 KiB
C
122 lines
4.2 KiB
C
/****************************************************************************
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* Copyright 2020,2021 Thomas E. Dickey *
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* Copyright 1998-2016,2017 Free Software Foundation, Inc. *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a *
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* copy of this software and associated documentation files (the *
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* "Software"), to deal in the Software without restriction, including *
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* without limitation the rights to use, copy, modify, merge, publish, *
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* distribute, distribute with modifications, sublicense, and/or sell *
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* copies of the Software, and to permit persons to whom the Software is *
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* furnished to do so, subject to the following conditions: *
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* *
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* The above copyright notice and this permission notice shall be included *
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* in all copies or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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* *
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* Except as contained in this notice, the name(s) of the above copyright *
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* holders shall not be used in advertising or otherwise to promote the *
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* sale, use or other dealings in this Software without prior written *
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* authorization. *
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****************************************************************************/
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/****************************************************************************
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* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
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* and: Eric S. Raymond <esr@snark.thyrsus.com> *
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* and: Thomas E. Dickey 1996-on *
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****************************************************************************/
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/*
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** lib_instr.c
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**
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** The routine winnstr().
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**
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*/
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#include "curses.priv.h"
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MODULE_ID("$Id: lib_instr.c,v 1.25 2021/04/03 22:24:18 tom Exp $")
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NCURSES_EXPORT(int)
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winnstr(WINDOW *win, char *str, int n)
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{
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int i = 0;
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T((T_CALLED("winnstr(%p,%p,%d)"), (void *) win, str, n));
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if (!win || !str) {
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i = ERR;
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} else {
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int row = win->_cury;
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int col = win->_curx;
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NCURSES_CH_T *text = win->_line[row].text;
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if (n < 0)
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n = win->_maxx - col + 1;
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for (; i < n;) {
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#if USE_WIDEC_SUPPORT
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cchar_t *cell = &(text[col]);
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attr_t attrs;
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NCURSES_PAIRS_T pair;
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char *tmp;
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if (!isWidecExt(*cell)) {
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wchar_t *wch;
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int n2;
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n2 = getcchar(cell, 0, 0, 0, 0);
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if (n2 > 0
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&& (wch = typeCalloc(wchar_t, (unsigned) n2 + 1)) != 0) {
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bool done = FALSE;
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if (getcchar(cell, wch, &attrs, &pair, 0) == OK) {
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mbstate_t state;
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size_t n3;
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init_mb(state);
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n3 = wcstombs(0, wch, (size_t) 0);
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if (!isEILSEQ(n3) && (n3 != 0)) {
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size_t need = n3 + 10 + (size_t) i;
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int have = (int) n3 + i;
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/* check for loop-done as well as overflow */
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if (have > n || (int) need <= 0) {
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done = TRUE;
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} else if ((tmp = typeCalloc(char, need)) == 0) {
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done = TRUE;
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} else {
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size_t i3;
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init_mb(state);
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wcstombs(tmp, wch, n3);
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for (i3 = 0; i3 < n3; ++i3)
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str[i++] = tmp[i3];
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free(tmp);
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}
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}
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}
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free(wch);
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if (done)
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break;
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}
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}
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#else
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str[i++] = (char) CharOf(text[col]);
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#endif
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if (++col > win->_maxx) {
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break;
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}
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}
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str[i] = '\0'; /* SVr4 does not seem to count the null */
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}
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T(("winnstr returns %s", _nc_visbuf(str)));
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returnCode(i);
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}
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