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Annotation of 43BSD/ucb/talk/init_disp.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1983 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  */
        !             6: 
        !             7: #ifndef lint
        !             8: static char sccsid[] = "@(#)init_disp.c        5.1 (Berkeley) 6/6/85";
        !             9: #endif not lint
        !            10: 
        !            11: /*
        !            12:  * Initialization code for the display package,
        !            13:  * as well as the signal handling routines.
        !            14:  */
        !            15: 
        !            16: #include "talk.h"
        !            17: #include <signal.h>
        !            18: 
        !            19: /* 
        !            20:  * Set up curses, catch the appropriate signals,
        !            21:  * and build the various windows.
        !            22:  */
        !            23: init_display()
        !            24: {
        !            25:        void sig_sent();
        !            26:        struct sigvec sigv;
        !            27: 
        !            28:        initscr();
        !            29:        (void) sigvec(SIGTSTP, (struct sigvec *)0, &sigv);
        !            30:        sigv.sv_mask |= sigmask(SIGALRM);
        !            31:        (void) sigvec(SIGTSTP, &sigv, (struct sigvec *)0);
        !            32:        curses_initialized = 1;
        !            33:        clear();
        !            34:        refresh();
        !            35:        noecho();
        !            36:        crmode();
        !            37:        signal(SIGINT, sig_sent);
        !            38:        signal(SIGPIPE, sig_sent);
        !            39:        /* curses takes care of ^Z */
        !            40:        my_win.x_nlines = LINES / 2;
        !            41:        my_win.x_ncols = COLS;
        !            42:        my_win.x_win = newwin(my_win.x_nlines, my_win.x_ncols, 0, 0);
        !            43:        scrollok(my_win.x_win, FALSE);
        !            44:        wclear(my_win.x_win);
        !            45: 
        !            46:        his_win.x_nlines = LINES / 2 - 1;
        !            47:        his_win.x_ncols = COLS;
        !            48:        his_win.x_win = newwin(his_win.x_nlines, his_win.x_ncols,
        !            49:            my_win.x_nlines+1, 0);
        !            50:        scrollok(his_win.x_win, FALSE);
        !            51:        wclear(his_win.x_win);
        !            52: 
        !            53:        line_win = newwin(1, COLS, my_win.x_nlines, 0);
        !            54:        box(line_win, '-', '-');
        !            55:        wrefresh(line_win);
        !            56:        /* let them know we are working on it */
        !            57:        current_state = "No connection yet";
        !            58: }
        !            59: 
        !            60: /*
        !            61:  * Trade edit characters with the other talk. By agreement
        !            62:  * the first three characters each talk transmits after
        !            63:  * connection are the three edit characters.
        !            64:  */
        !            65: set_edit_chars()
        !            66: {
        !            67:        char buf[3];
        !            68:        int cc;
        !            69:        struct sgttyb tty;
        !            70:        struct ltchars ltc;
        !            71:        
        !            72:        ioctl(0, TIOCGETP, &tty);
        !            73:        ioctl(0, TIOCGLTC, (struct sgttyb *)&ltc);
        !            74:        my_win.cerase = tty.sg_erase;
        !            75:        my_win.kill = tty.sg_kill;
        !            76:        if (ltc.t_werasc == (char) -1)
        !            77:                my_win.werase = '\027';  /* control W */
        !            78:        else
        !            79:                my_win.werase = ltc.t_werasc;
        !            80:        buf[0] = my_win.cerase;
        !            81:        buf[1] = my_win.kill;
        !            82:        buf[2] = my_win.werase;
        !            83:        cc = write(sockt, buf, sizeof(buf));
        !            84:        if (cc != sizeof(buf) )
        !            85:                p_error("Lost the connection");
        !            86:        cc = read(sockt, buf, sizeof(buf));
        !            87:        if (cc != sizeof(buf) )
        !            88:                p_error("Lost the connection");
        !            89:        his_win.cerase = buf[0];
        !            90:        his_win.kill = buf[1];
        !            91:        his_win.werase = buf[2];
        !            92: }
        !            93: 
        !            94: void
        !            95: sig_sent()
        !            96: {
        !            97: 
        !            98:        message("Connection closing. Exiting");
        !            99:        quit();
        !           100: }
        !           101: 
        !           102: /*
        !           103:  * All done talking...hang up the phone and reset terminal thingy's
        !           104:  */
        !           105: quit()
        !           106: {
        !           107: 
        !           108:        if (curses_initialized) {
        !           109:                wmove(his_win.x_win, his_win.x_nlines-1, 0);
        !           110:                wclrtoeol(his_win.x_win);
        !           111:                wrefresh(his_win.x_win);
        !           112:                endwin();
        !           113:        }
        !           114:        if (invitation_waiting)
        !           115:                send_delete();
        !           116:        exit(0);
        !           117: }

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