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/****************************************************************************
* Copyright 2018-2023,2024 Thomas E. Dickey *
* Copyright 2004-2009,2016 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* "Software"), to deal in the Software without restriction, including *
* without limitation the rights to use, copy, modify, merge, publish, *
* distribute, distribute with modifications, sublicense, and/or sell *
* copies of the Software, and to permit persons to whom the Software is *
* furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included *
* in all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
* *
* Except as contained in this notice, the name(s) of the above copyright *
* holders shall not be used in advertising or otherwise to promote the *
* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************/
/****************************************************************************
* Author: Thomas E. Dickey *
****************************************************************************/
/*
** lib_insnstr.c
**
** The routine winsnstr().
**
*/
#include <curses.priv.h>
#include <ctype.h>
MODULE_ID("$Id: lib_insnstr.c,v 1.11 2024/12/07 20:00:48 tom Exp $")
NCURSES_EXPORT(int)
winsnstr(WINDOW *win, const char *s, int n)
{
int code = ERR;
const unsigned char *str = (const unsigned char *) s;
T((T_CALLED("winsnstr(%p,%s,%d)"), (void *) win, _nc_visbufn(s, n), n));
if (win != NULL && str != NULL && n != 0) {
SCREEN *sp = _nc_screen_of(win);
#if USE_WIDEC_SUPPORT
/*
* If the output contains "wide" (multibyte) characters, we will not
* really know the width of a character until we get the last byte
* of the character. Since the preceding byte(s) may use more columns
* on the screen than the final character, it is best to route the
* call to the wins_nwstr() function.
*/
if (sp->_screen_unicode) {
size_t nn = (n > 0) ? (size_t) n : strlen(s);
wchar_t *buffer = typeMalloc(wchar_t, nn + 1);
if (buffer != NULL) {
mbstate_t state;
size_t n3;
init_mb(state);
n3 = mbstowcs(buffer, s, nn);
if (n3 != (size_t) (-1)) {
buffer[n3] = '\0';
code = wins_nwstr(win, buffer, (int) n3);
}
free(buffer);
}
}
if (code == ERR)
#endif
{
NCURSES_SIZE_T oy = win->_cury;
NCURSES_SIZE_T ox = win->_curx;
const unsigned char *cp;
for (cp = str; (n < 0 || (cp - str) < n) && *cp; cp++) {
_nc_insert_ch(sp, win, (chtype) UChar(*cp));
}
win->_curx = ox;
win->_cury = oy;
_nc_synchook(win);
code = OK;
}
}
returnCode(code);
}
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