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Annotation of 42BSD/usr.lib/libcurses/initscr.c, revision 1.1.1.1

1.1       root        1: # include      "curses.ext"
                      2: # include      <signal.h>
                      3: # include      <sys/param.h>
                      4: 
                      5: extern char    *getenv();
                      6: 
                      7: /*
                      8:  *     This routine initializes the current and standard screen.
                      9:  *
                     10:  * 5/19/83 (Berkeley) @(#)initscr.c    1.3
                     11:  */
                     12: WINDOW *
                     13: initscr() {
                     14: 
                     15:        reg char        *sp;
                     16:        int             tstp();
                     17: 
                     18: # ifdef DEBUG
                     19:        fprintf(outf, "INITSCR()\n");
                     20: # endif
                     21:        if (My_term)
                     22:                setterm(Def_term);
                     23:        else {
                     24:                if (isatty(2))
                     25:                        _tty_ch = 2;
                     26:                else {
                     27:                        for (_tty_ch = 0; _tty_ch < NOFILE; _tty_ch++)
                     28:                                if (isatty(_tty_ch))
                     29:                                        break;
                     30:                }
                     31:                gettmode();
                     32:                if ((sp = getenv("TERM")) == NULL)
                     33:                        sp = Def_term;
                     34:                setterm(sp);
                     35: # ifdef DEBUG
                     36:                fprintf(outf, "INITSCR: term = %s\n", sp);
                     37: # endif
                     38:        }
                     39:        _puts(TI);
                     40:        _puts(VS);
                     41: # ifdef SIGTSTP
                     42:        signal(SIGTSTP, tstp);
                     43: # endif
                     44:        if (curscr != NULL) {
                     45: # ifdef DEBUG
                     46:                fprintf(outf, "INITSCR: curscr = 0%o\n", curscr);
                     47: # endif
                     48:                delwin(curscr);
                     49:        }
                     50: # ifdef DEBUG
                     51:        fprintf(outf, "LINES = %d, COLS = %d\n", LINES, COLS);
                     52: # endif
                     53:        if ((curscr = newwin(LINES, COLS, 0, 0)) == ERR)
                     54:                return ERR;
                     55:        curscr->_clear = TRUE;
                     56:        if (stdscr != NULL) {
                     57: # ifdef DEBUG
                     58:                fprintf(outf, "INITSCR: stdscr = 0%o\n", stdscr);
                     59: # endif
                     60:                delwin(stdscr);
                     61:        }
                     62:        stdscr = newwin(LINES, COLS, 0, 0);
                     63:        return stdscr;
                     64: }

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