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29 /****************************************************************************
30 * Author: Thomas E. Dickey *
31 ****************************************************************************/
36 ** The routine winsnstr().
40 #include <curses.priv.h>
43 MODULE_ID("$Id: lib_insnstr.c,v 1.6 2018/03/10 20:13:59 Gyorgy.Jeney Exp $")
46 winsnstr(WINDOW *win, const char *s, int n)
49 const unsigned char *str = (const unsigned char *) s;
51 T((T_CALLED("winsnstr(%p,%s,%d)"), (void *) win, _nc_visbufn(s, n), n));
53 if (win != 0 && str != 0) {
54 SCREEN *sp = _nc_screen_of(win);
57 * If the output contains "wide" (multibyte) characters, we will not
58 * really know the width of a character until we get the last byte
59 * of the character. Since the preceding byte(s) may use more columns
60 * on the screen than the final character, it is best to route the
61 * call to the wins_nwstr() function.
63 if (sp->_screen_unicode) {
64 size_t nn = (n > 0) ? (size_t) n : strlen(s);
65 wchar_t *buffer = typeMalloc(wchar_t, nn + 1);
70 n3 = mbstowcs(buffer, s, nn);
71 if (n3 != (size_t) (-1)) {
72 code = wins_nwstr(win, buffer, (int) n3);
80 NCURSES_SIZE_T oy = win->_cury;
81 NCURSES_SIZE_T ox = win->_curx;
82 const unsigned char *cp;
84 for (cp = str; (n <= 0 || (cp - str) < n) && *cp; cp++) {
85 _nc_insert_ch(sp, win, (chtype) UChar(*cp));