BSD 4_3_Reno release

[unix-history] / usr / src / usr.bin / window / cmd2.c

/*
* Copyright (c) 1983 Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Edward Wang at The University of California, Berkeley.
*
* Redistribution and use in source and binary forms are permitted provided
* that: (1) source distributions retain this entire copyright notice and
* comment, and (2) distributions including binaries display the following
* acknowledgement:  ``This product includes software developed by the
* University of California, Berkeley and its contributors'' in the
* documentation or other materials provided with the distribution and in
* all advertising materials mentioning features or use of this software.
* Neither the name of the University nor the names of its contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/

#ifndef lint
static char sccsid[] = "@(#)cmd2.c      3.40 (Berkeley) 6/6/90";
#endif /* not lint */

#include "defs.h"

char *help_shortcmd[] = {
       "#       Select window # and return to conversation mode",
       "%#      Select window # but stay in command mode",
       "escape  Return to conversation mode without changing window",
       "^^      Return to conversation mode and change to previous window",
       "c#      Close window #",
       "w       Open a new window",
       "m#      Move window #",
       "M#      Move window # to its previous position",
       "s#      Change the size of window #",
       "S#      Change window # to its previous size",
       "^Y      Scroll up one line",
       "^E      Scroll down one line",
       "^U      Scroll up half a window",
       "^D      Scroll down half a window",
       "^B      Scroll up a full window",
       "^F      Scroll down a full window",
       "h       Move cursor left",
       "j       Move cursor down",
       "k       Move cursor up",
       "l       Move cursor right",
       "^S      Stop output in current window",
       "^Q      Restart output in current window",
       "^L      Redraw screen",
       "^Z      Suspend",
       "q       Quit",
       ":       Enter a long command",
       0
};
char *help_longcmd[] = {
       ":alias name string ...  Make `name' an alias for `string ...'",
       ":alias                  Show all aliases",
       ":close # ...            Close windows",
       ":close all              Close all windows",
       ":cursor modes           Set the cursor modes",
       ":echo # string ...      Print `string ...' in window #",
       ":escape c               Set escape character to `c'",
       ":foreground # flag      Make # a foreground window, if `flag' is true",
       ":label # string         Set label of window # to `string'",
       ":list                   List all open windows",
       ":default_nline lines    Set default window buffer size to `lines'",
       ":default_shell string ...",
       "                        Set default shell to `string ...'",
       ":default_smooth flag    Set default smooth scroll flag",
       ":select #               Select window #",
       ":smooth # flag          Set window # to smooth scroll mode",
       ":source filename        Execute commands in `filename'",
       ":terse flag             Set terse mode",
       ":unalias name           Undefine `name' as an alias",
       ":unset variable         Deallocate `variable'",
       ":variable               List all variables",
       ":window [row col nrow ncol nline label pty frame mapnl keepopen smooth shell]",
       "                        Open a window at `row', `col' of size `nrow', `ncol',",
       "                        with `nline' lines in the buffer, and `label'",
       ":write # string ...     Write `string ...' to window # as input",
       0
};

c_help()
{
       register struct ww *w;

       if ((w = openiwin(wwnrow - 3, "Help")) == 0) {
               error("Can't open help window: %s.", wwerror());
               return;
       }
       wwprintf(w, "The escape character is %c.\n", escapec);
       wwprintf(w, "(# represents one of the digits from 1 to 9.)\n\n");
       if (help_print(w, "Short commands", help_shortcmd) >= 0)
               (void) help_print(w, "Long commands", help_longcmd);
       closeiwin(w);
}

help_print(w, name, list)
register struct ww *w;
char *name;
register char **list;
{
       wwprintf(w, "%s:\n\n", name);
       while (*list)
               switch (more(w, 0)) {
               case 0:
                       wwputs(*list++, w);
                       wwputc('\n', w);
                       break;
               case 1:
                       wwprintf(w, "%s: (continued)\n\n", name);
                       break;
               case 2:
                       return -1;
               }
       return more(w, 1) == 2 ? -1 : 0;
}

c_quit()
{
       char oldterse = terse;

       setterse(0);
       wwputs("Really quit [yn]? ", cmdwin);
       wwcurtowin(cmdwin);
       while (wwpeekc() < 0)
               wwiomux();
       if (wwgetc() == 'y') {
               wwputs("Yes", cmdwin);
               quit++;
       } else
               wwputc('\n', cmdwin);
       setterse(!quit && oldterse);
}