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Annotation of researchv10dc/ncurses/screen/newwin.c, revision 1.1

1.1     ! root        1: # include      "curses.ext"
        !             2: # include      <signal.h>
        !             3: /*     @(#) newwin.c: 1.1 10/15/83     (1.17   3/16/83)        */
        !             4: 
        !             5: char   *calloc();
        !             6: char   *malloc();
        !             7: extern char    *getenv();
        !             8: 
        !             9: extern WINDOW  *makenew();
        !            10: 
        !            11: /*
        !            12:  * allocate space for and set up defaults for a new _window
        !            13:  *
        !            14:  * 1/26/81 (Berkeley).  This used to be newwin.c
        !            15:  */
        !            16: 
        !            17: WINDOW *
        !            18: newwin(nlines, ncols, by, bx)
        !            19: register int   nlines, ncols, by, bx;
        !            20: {
        !            21:        register WINDOW *win;
        !            22:        register chtype *sp;
        !            23:        register int i;
        !            24:        char *calloc();
        !            25: 
        !            26:        if (by + nlines > LINES)
        !            27:                nlines = LINES - by;
        !            28:        if (bx + ncols > COLS)
        !            29:                ncols = COLS - bx;
        !            30: 
        !            31:        if (nlines == 0)
        !            32:                nlines = LINES - by;
        !            33:        if (ncols == 0)
        !            34:                ncols = COLS - bx;
        !            35: 
        !            36:        if ((win = makenew(nlines, ncols, by, bx)) == NULL)
        !            37:                return NULL;
        !            38:        for (i = 0; i < nlines; i++)
        !            39:                if ((win->_y[i] = (chtype *) calloc(ncols, sizeof (chtype))) == NULL) {
        !            40:                        register int j;
        !            41: 
        !            42:                        for (j = 0; j < i; j++)
        !            43:                                cfree((char *)win->_y[j]);
        !            44:                        cfree((char *)win->_firstch);
        !            45:                        cfree((char *)win->_lastch);
        !            46:                        cfree((char *)win->_y);
        !            47:                        cfree((char *)win);
        !            48:                        return NULL;
        !            49:                }
        !            50:                else
        !            51:                        for (sp = win->_y[i]; sp < win->_y[i] + ncols; )
        !            52:                                *sp++ = ' ';
        !            53:        return win;
        !            54: }

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