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

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  28
  29 /****************************************************************************
  30  *  Author: Thomas Dickey 2002                                              *
  31  ****************************************************************************/
  32
  33 /*
  34 **      lib_ins_wch.c
  35 **
  36 **      The routine wins_wch().
  37 **
  38 */
  39
  40 #include <curses.priv.h>
  41
  42 MODULE_ID("$Id: lib_ins_wch.c,v 1.16 2010/12/19 01:34:04 tom Exp $")
  43
  44 /*
  45  * Insert the given character, updating the current location to simplify
  46  * inserting a string.
  47  */
  48 NCURSES_EXPORT(int)
  49 _nc_insert_wch(WINDOW *win, const cchar_t *wch)
  50 {
  51     int cells = wcwidth(CharOf(CHDEREF(wch)));
  52     int cell;
  53     int code = OK;
  54
  55     if (cells < 0) {
  56         code = winsch(win, (chtype) CharOf(CHDEREF(wch)));
  57     } else {
  58         if (cells == 0)
  59             cells = 1;
  60
  61         if (win->_curx <= win->_maxx) {
  62             struct ldat *line = &(win->_line[win->_cury]);
  63             NCURSES_CH_T *end = &(line->text[win->_curx]);
  64             NCURSES_CH_T *temp1 = &(line->text[win->_maxx]);
  65             NCURSES_CH_T *temp2 = temp1 - cells;
  66
  67             CHANGED_TO_EOL(line, win->_curx, win->_maxx);
  68             while (temp1 > end)
  69                 *temp1-- = *temp2--;
  70
  71             *temp1 = _nc_render(win, *wch);
  72             for (cell = 1; cell < cells; ++cell) {
  73                 SetWidecExt(temp1[cell], cell);
  74             }
  75
  76             win->_curx++;
  77         }
  78     }
  79     return code;
  80 }
  81
  82 NCURSES_EXPORT(int)
  83 wins_wch(WINDOW *win, const cchar_t *wch)
  84 {
  85     NCURSES_SIZE_T oy;
  86     NCURSES_SIZE_T ox;
  87     int code = ERR;
  88
  89     T((T_CALLED("wins_wch(%p, %s)"), (void *) win, _tracecchar_t(wch)));
  90
  91     if (win != 0) {
  92         oy = win->_cury;
  93         ox = win->_curx;
  94
  95         code = _nc_insert_wch(win, wch);
  96
  97         win->_curx = ox;
  98         win->_cury = oy;
  99         _nc_synchook(win);
 100     }
 101     returnCode(code);
 102 }
 103
 104 NCURSES_EXPORT(int)
 105 wins_nwstr(WINDOW *win, const wchar_t *wstr, int n)
 106 {
 107     int code = ERR;
 108     NCURSES_SIZE_T oy;
 109     NCURSES_SIZE_T ox;
 110     const wchar_t *cp;
 111
 112     T((T_CALLED("wins_nwstr(%p,%s,%d)"),
 113        (void *) win, _nc_viswbufn(wstr, n), n));
 114
 115     if (win != 0
 116         && wstr != 0) {
 117         if (n < 1)
 118             n = (int) wcslen(wstr);
 119         code = OK;
 120         if (n > 0) {
 121             SCREEN *sp = _nc_screen_of(win);
 122
 123             oy = win->_cury;
 124             ox = win->_curx;
 125             for (cp = wstr; *cp && ((cp - wstr) < n); cp++) {
 126                 int len = wcwidth(*cp);
 127
 128                 if ((len >= 0 && len != 1) || !is7bits(*cp)) {
 129                     cchar_t tmp_cchar;
 130                     wchar_t tmp_wchar = *cp;
 131                     memset(&tmp_cchar, 0, sizeof(tmp_cchar));
 132                     (void) setcchar(&tmp_cchar,
 133                                     &tmp_wchar,
 134                                     WA_NORMAL,
 135                                     0,
 136                                     (void *) 0);
 137                     code = _nc_insert_wch(win, &tmp_cchar);
 138                 } else {
 139                     /* tabs, other ASCII stuff */
 140                     code = _nc_insert_ch(sp, win, (chtype) (*cp));
 141                 }
 142                 if (code != OK)
 143                     break;
 144             }
 145
 146             win->_curx = ox;
 147             win->_cury = oy;
 148             _nc_synchook(win);
 149         }
 150     }
 151     returnCode(code);
 152 }