added "more" command

[unix-history] / usr / src / usr.bin / window / cmd.c

#ifndef lint
static char sccsid[] = "@(#)cmd.c       3.33 %G%";
#endif

/*
* Copyright (c) 1983 Regents of the University of California,
* All rights reserved.  Redistribution permitted subject to
* the terms of the Berkeley Software License Agreement.
*/

#include "defs.h"
#include "char.h"

docmd()
{
       register char c;
       register struct ww *w;
       char out = 0;

       for (;;) {
               while ((c = wwgetc()) >= 0) {
                       if (!terse)
                               wwputc('\n', cmdwin);
                       switch (c) {
                       default:
                               if (c == escapec)
                                       goto foo;
                               break;
                       case 'h': case 'j': case 'k': case 'l':
                       case ctrl(y):
                       case ctrl(e):
                       case ctrl(u):
                       case ctrl(d):
                       case ctrl(b):
                       case ctrl(f):
                       case ctrl(s):
                       case ctrl(q):
                       case ctrl([):
                       foo:
                               if (selwin == 0) {
                                       error("No window.");
                                       continue;
                               }
                       }
                       switch (c) {
                       case '1': case '2': case '3': case '4': case '5':
                       case '6': case '7': case '8': case '9':
                               if ((w = window[c - '1']) == 0) {
                                       error("%c: No such window.", c);
                                       break;
                               }
                               setselwin(w);
                               if (checkproc(selwin) >= 0)
                                        out = 1;
                               break;
                       case '%':
                               if ((w = getwin()) != 0)
                                       setselwin(w);
                               break;
                       case ctrl(^):
                               if (lastselwin != 0) {
                                       setselwin(lastselwin);
                                       if (checkproc(selwin) >= 0)
                                               out = 1;
                               } else
                                       error("No previous window.");
                               break;
                       case 'c':
                               if ((w = getwin()) != 0)
                                       c_close(w);
                               break;
                       case 'w':
                               c_window();
                               break;
                       case 'm':
                               if ((w = getwin()) != 0)
                                       c_move(w);
                               break;
                       case 'M':
                               if ((w = getwin()) != 0)
                                       movewin(w, w->ww_alt.t, w->ww_alt.l);
                               break;
                       case 's':
                               if ((w = getwin()) != 0)
                                       c_size(w);
                               break;
                       case 'S':
                               if ((w = getwin()) != 0)
                                       sizewin(w, w->ww_alt.nr, w->ww_alt.nc);
                               break;
                       case ':':
                               c_colon();
                               break;
                       case 'h':
                               (void) wwwrite(selwin, "\b", 1);
                               break;
                       case 'j':
                               (void) wwwrite(selwin, "\n", 1);
                               break;
                       case 'k':
                               (void) wwwrite(selwin, "\033A", 2);
                               break;
                       case 'l':
                               (void) wwwrite(selwin, "\033C", 2);
                               break;
                       case ctrl(e):
                               wwscroll(selwin, 1);
                               break;
                       case ctrl(y):
                               wwscroll(selwin, -1);
                               break;
                       case ctrl(d):
                               wwscroll(selwin, selwin->ww_w.nr / 2);
                               break;
                       case ctrl(u):
                               wwscroll(selwin, - selwin->ww_w.nr / 2);
                               break;
                       case ctrl(f):
                               wwscroll(selwin, selwin->ww_w.nr);
                               break;
                       case ctrl(b):
                               wwscroll(selwin, - selwin->ww_w.nr);
                               break;
                       case ctrl(s):
                               stopwin(selwin);
                               break;
                       case ctrl(q):
                               startwin(selwin);
                               break;
                       case ctrl(l):
                               wwredraw();
                               break;
                       case '?':
                               c_help();
                               break;
                       case ctrl([):
                               if (checkproc(selwin) >= 0)
                                       out = 1;
                               break;
                       case ctrl(z):
                               wwsuspend();
                               break;
                       case 'q':
                               c_quit();
                               break;
                       /* debugging stuff */
                       case '&':
                               if (debug) {
                                       c_debug();
                                       break;
                               }
                       default:
                               if (c == escapec) {
                                       if (checkproc(selwin) >= 0) {
                                               (void) write(selwin->ww_pty,
                                                       &escapec, 1);
                                               out = 1;
                                       }
                               } else {
                                       if (!terse)
                                               wwbell();
                                       error("Type ? for help.");
                               }
                       }
               }
               if (out || quit)
                       break;
               if (terse)
                       wwsetcursor(0, 0);
               else {
                       wwputs("Command: ", cmdwin);
                       wwcurtowin(cmdwin);
               }
               while (wwpeekc() < 0)
                       wwiomux();
       }
       if (!quit)
               setcmd(0);
}

struct ww *
getwin()
{
       register int c;
       struct ww *w = 0;

       if (!terse)
               wwputs("Which window? ", cmdwin);
       wwcurtowin(cmdwin);
       while ((c = wwgetc()) < 0)
               wwiomux();
       if (debug && c == 'c')
               w = cmdwin;
       else if (debug && c == 'f')
               w = framewin;
       else if (debug && c == 'b')
               w = boxwin;
       else if (c >= '1' && c < NWINDOW + '1')
               w = window[c - '1'];
       if (w == 0)
               wwbell();
       if (!terse)
               wwputc('\n', cmdwin);
       return w;
}

checkproc(w)
struct ww *w;
{
       if (w->ww_state != WWS_HASPROC) {
               error("No process in window.");
               return -1;
       }
       return 0;
}

setcmd(new)
char new;
{
       if (new && !incmd) {
               if (!terse)
                       wwadd(cmdwin, &wwhead);
               if (selwin != 0)
                       wwcursor(selwin, 1);
               wwcurwin = 0;
       } else if (!new && incmd) {
               if (!terse) {
                       wwdelete(cmdwin);
                       reframe();
               }
               if (selwin != 0)
                       wwcursor(selwin, 0);
               wwcurwin = selwin;
       }
       incmd = new;
}

setterse(new)
char new;
{
       if (incmd)
               if (new && !terse) {
                       wwdelete(cmdwin);
                       reframe();
               } else if (!new && terse)
                       wwadd(cmdwin, &wwhead);
       terse = new;
}

/*
* Set the current window.
*/
setselwin(w)
struct ww *w;
{
       if (selwin == w)
               return;
       if (selwin != 0)
               lastselwin = selwin;
       if ((selwin = w) != 0)
               front(selwin, 1);
}