release/src/router/libncurses/ncurses/widechar/lib_in_wchnstr.c

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  29 /****************************************************************************
  30  * Author: Thomas Dickey                                                    *
  31  ****************************************************************************/
  32
  33 /*
  34 **      lib_in_wchnstr.c
  35 **
  36 **      The routine win_wchnstr().
  37 **
  38 */
  39
  40 #include <curses.priv.h>
  41
  42 MODULE_ID("$Id: lib_in_wchnstr.c,v 1.8 2009/10/24 22:37:48 tom Exp $")
  43
  44 NCURSES_EXPORT(int)
  45 win_wchnstr(WINDOW *win, cchar_t *wchstr, int n)
  46 {
  47     int code = OK;
  48
  49     T((T_CALLED("win_wchnstr(%p,%p,%d)"), (void *) win, (void *) wchstr, n));
  50     if (win != 0
  51         && wchstr != 0) {
  52         NCURSES_CH_T *src;
  53         int row, col;
  54         int j, k, limit;
  55
  56         getyx(win, row, col);
  57         limit = getmaxx(win) - col;
  58         src = &(win->_line[row].text[col]);
  59
  60         if (n < 0) {
  61             n = limit;
  62         } else if (n > limit) {
  63             n = limit;
  64         }
  65         for (j = k = 0; j < n; ++j) {
  66             if (j == 0 || !WidecExt(src[j]) || isWidecBase(src[j])) {
  67                 wchstr[k++] = src[j];
  68             }
  69         }
  70         memset(&(wchstr[k]), 0, sizeof(*wchstr));
  71         T(("result = %s", _nc_viscbuf(wchstr, n)));
  72     } else {
  73         code = ERR;
  74     }
  75     returnCode(code);
  76 }