release/src/router/libncurses/ncurses/base/lib_addstr.c

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  28
  29 /****************************************************************************
  30  *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
  31  *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
  32  *                                                                          *
  33  *  Rewritten 2001-2004 to support wide-characters by                       *
  34  *      Sven Verdoolaege                                                    *
  35  *      Thomas Dickey                                                       *
  36  ****************************************************************************/
  37
  38 /*
  39 **      lib_addstr.c
  40 *
  41 **      The routines waddnstr(), waddchnstr().
  42 **
  43 */
  44
  45 #include <curses.priv.h>
  46
  47 MODULE_ID("$Id: lib_addstr.c,v 1.52 2011/05/28 23:02:09 tom Exp $")
  48
  49 NCURSES_EXPORT(int)
  50 waddnstr(WINDOW *win, const char *astr, int n)
  51 {
  52     const char *str = astr;
  53     int code = ERR;
  54
  55     T((T_CALLED("waddnstr(%p,%s,%d)"), (void *) win, _nc_visbufn(astr, n), n));
  56
  57     if (win && (str != 0)) {
  58         TR(TRACE_VIRTPUT | TRACE_ATTRS,
  59            ("... current %s", _traceattr(WINDOW_ATTRS(win))));
  60         code = OK;
  61         if (n < 0)
  62             n = (int) strlen(astr);
  63
  64         TR(TRACE_VIRTPUT, ("str is not null, length = %d", n));
  65         while ((n-- > 0) && (*str != '\0')) {
  66             NCURSES_CH_T ch;
  67             TR(TRACE_VIRTPUT, ("*str = %#o", UChar(*str)));
  68             SetChar(ch, UChar(*str++), A_NORMAL);
  69             if (_nc_waddch_nosync(win, ch) == ERR) {
  70                 code = ERR;
  71                 break;
  72             }
  73         }
  74         _nc_synchook(win);
  75     }
  76     TR(TRACE_VIRTPUT, ("waddnstr returns %d", code));
  77     returnCode(code);
  78 }
  79
  80 NCURSES_EXPORT(int)
  81 waddchnstr(WINDOW *win, const chtype *astr, int n)
  82 {
  83     NCURSES_SIZE_T y, x;
  84     int code = OK;
  85     int i;
  86     struct ldat *line;
  87
  88     T((T_CALLED("waddchnstr(%p,%p,%d)"), (void *) win, (const void *) astr, n));
  89
  90     if (!win)
  91         returnCode(ERR);
  92
  93     y = win->_cury;
  94     x = win->_curx;
  95     if (n < 0) {
  96         const chtype *str;
  97         n = 0;
  98         for (str = (const chtype *) astr; *str != 0; str++)
  99             n++;
 100     }
 101     if (n > win->_maxx - x + 1)
 102         n = win->_maxx - x + 1;
 103     if (n == 0)
 104         returnCode(code);
 105
 106     line = &(win->_line[y]);
 107     for (i = 0; i < n && ChCharOf(astr[i]) != '\0'; ++i) {
 108         SetChar2(line->text[i + x], astr[i]);
 109     }
 110     CHANGED_RANGE(line, x, (NCURSES_SIZE_T) (x + n - 1));
 111
 112     _nc_synchook(win);
 113     returnCode(code);
 114 }
 115
 116 #if USE_WIDEC_SUPPORT
 117
 118 NCURSES_EXPORT(int)
 119 _nc_wchstrlen(const cchar_t *s)
 120 {
 121     int result = 0;
 122     if (s != 0) {
 123         while (CharOf(s[result]) != L'\0') {
 124             result++;
 125         }
 126     }
 127     return result;
 128 }
 129
 130 NCURSES_EXPORT(int)
 131 wadd_wchnstr(WINDOW *win, const cchar_t *astr, int n)
 132 {
 133     static const NCURSES_CH_T blank = NewChar(BLANK_TEXT);
 134     NCURSES_SIZE_T y;
 135     NCURSES_SIZE_T x;
 136     int code = OK;
 137     struct ldat *line;
 138     int i, j, start, len, end;
 139
 140     T((T_CALLED("wadd_wchnstr(%p,%s,%d)"),
 141        (void *) win,
 142        _nc_viscbuf(astr, n),
 143        n));
 144
 145     if (!win)
 146         returnCode(ERR);
 147
 148     y = win->_cury;
 149     x = win->_curx;
 150     if (n < 0) {
 151         n = _nc_wchstrlen(astr);
 152     }
 153     if (n > win->_maxx - x + 1)
 154         n = win->_maxx - x + 1;
 155     if (n == 0)
 156         returnCode(code);
 157
 158     line = &(win->_line[y]);
 159     start = x;
 160     end = x + n - 1;
 161
 162     /*
 163      * Reset orphaned cells of multi-column characters that extend up to the
 164      * new string's location to blanks.
 165      */
 166     if (x > 0 && isWidecExt(line->text[x])) {
 167         for (i = 0; i <= x; ++i) {
 168             if (!isWidecExt(line->text[x - i])) {
 169                 /* must be isWidecBase() */
 170                 start -= i;
 171                 while (i > 0) {
 172                     line->text[x - i--] = _nc_render(win, blank);
 173                 }
 174                 break;
 175             }
 176         }
 177     }
 178
 179     /*
 180      * Copy the new string to the window.
 181      */
 182     for (i = 0; i < n && CharOf(astr[i]) != L'\0' && x <= win->_maxx; ++i) {
 183         if (isWidecExt(astr[i]))
 184             continue;
 185
 186         len = wcwidth(CharOf(astr[i]));
 187
 188         if (x + len - 1 <= win->_maxx) {
 189             line->text[x] = _nc_render(win, astr[i]);
 190             if (len > 1) {
 191                 for (j = 0; j < len; ++j) {
 192                     if (j != 0) {
 193                         line->text[x + j] = line->text[x];
 194                     }
 195                     SetWidecExt(line->text[x + j], j);
 196                 }
 197             }
 198             x = (NCURSES_SIZE_T) (x + len);
 199             end += len - 1;
 200         } else {
 201             break;
 202         }
 203     }
 204
 205     /*
 206      * Set orphaned cells of multi-column characters which lie after the new
 207      * string to blanks.
 208      */
 209     while (x <= win->_maxx && isWidecExt(line->text[x])) {
 210         line->text[x] = _nc_render(win, blank);
 211         ++end;
 212         ++x;
 213     }
 214     CHANGED_RANGE(line, start, end);
 215
 216     _nc_synchook(win);
 217     returnCode(code);
 218 }
 219
 220 NCURSES_EXPORT(int)
 221 waddnwstr(WINDOW *win, const wchar_t *str, int n)
 222 {
 223     int code = ERR;
 224
 225     T((T_CALLED("waddnwstr(%p,%s,%d)"), (void *) win, _nc_viswbufn(str, n), n));
 226
 227     if (win && (str != 0)) {
 228         TR(TRACE_VIRTPUT | TRACE_ATTRS,
 229            ("... current %s", _traceattr(WINDOW_ATTRS(win))));
 230         code = OK;
 231         if (n < 0)
 232             n = (int) wcslen(str);
 233
 234         TR(TRACE_VIRTPUT, ("str is not null, length = %d", n));
 235         while ((n-- > 0) && (*str != L('\0'))) {
 236             NCURSES_CH_T ch;
 237             TR(TRACE_VIRTPUT, ("*str[0] = %#lx", (unsigned long) *str));
 238             SetChar(ch, *str++, A_NORMAL);
 239             if (wadd_wch(win, &ch) == ERR) {
 240                 code = ERR;
 241                 break;
 242             }
 243         }
 244         _nc_synchook(win);
 245     }
 246     TR(TRACE_VIRTPUT, ("waddnwstr returns %d", code));
 247     returnCode(code);
 248 }
 249
 250 #endif