usr.bin/window/cmd2.c

   1 /*      @(#)cmd2.c      8.1 (Berkeley) 6/6/93   */
   2 /*      $NetBSD: cmd2.c,v 1.7 2009/04/14 08:50:06 lukem Exp $   */
   3
   4 /*
   5  * Copyright (c) 1983, 1993
   6  *      The Regents of the University of California.  All rights reserved.
   7  *
   8  * This code is derived from software contributed to Berkeley by
   9  * Edward Wang at The University of California, Berkeley.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  * 3. Neither the name of the University nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #include "defs.h"
  37
  38 const char *help_shortcmd[] = {
  39         "#       Select window # and return to conversation mode",
  40         "%#      Select window # but stay in command mode",
  41         "escape  Return to conversation mode without changing window",
  42         "^^      Return to conversation mode and change to previous window",
  43         "c#      Close window #",
  44         "w       Open a new window",
  45         "m#      Move window #",
  46         "M#      Move window # to its previous position",
  47         "s#      Change the size of window #",
  48         "S#      Change window # to its previous size",
  49         "^Y      Scroll up one line",
  50         "^E      Scroll down one line",
  51         "^U      Scroll up half a window",
  52         "^D      Scroll down half a window",
  53         "^B      Scroll up a full window",
  54         "^F      Scroll down a full window",
  55         "h       Move cursor left",
  56         "j       Move cursor down",
  57         "k       Move cursor up",
  58         "l       Move cursor right",
  59         "y       Yank",
  60         "p       Put",
  61         "^S      Stop output in current window",
  62         "^Q      Restart output in current window",
  63         "^L      Redraw screen",
  64         "^Z      Suspend",
  65         "q       Quit",
  66         ":       Enter a long command",
  67         0
  68 };
  69
  70 const char *help_longcmd[] = {
  71         ":alias name string ...  Make `name' an alias for `string ...'",
  72         ":alias                  Show all aliases",
  73         ":close # ...            Close windows",
  74         ":close all              Close all windows",
  75         ":cursor modes           Set the cursor modes",
  76         ":echo # string ...      Print `string ...' in window #",
  77         ":escape c               Set escape character to `c'",
  78         ":foreground # flag      Make # a foreground window, if `flag' is true",
  79         ":label # string         Set label of window # to `string'",
  80         ":list                   List all open windows",
  81         ":default_nline lines    Set default window buffer size to `lines'",
  82         ":default_shell string ...",
  83         "                        Set default shell to `string ...'",
  84         ":default_smooth flag    Set default smooth scroll flag",
  85         ":select #               Select window #",
  86         ":smooth # flag          Set window # to smooth scroll mode",
  87         ":source filename        Execute commands in `filename'",
  88         ":terse flag             Set terse mode",
  89         ":unalias name           Undefine `name' as an alias",
  90         ":unset variable         Deallocate `variable'",
  91         ":variable               List all variables",
  92         ":window [row col nrow ncol nline label pty frame mapnl keepopen smooth shell]",
  93         "                        Open a window at `row', `col' of size `nrow', `ncol',",
  94         "                        with `nline' lines in the buffer, and `label'",
  95         ":write # string ...     Write `string ...' to window # as input",
  96         0
  97 };
  98
  99 int     help_print(struct ww *, const char *, const char **);
 100
 101 void
 102 c_help(void)
 103 {
 104         struct ww *w;
 105
 106         if ((w = openiwin(wwnrow - 3, "Help")) == NULL) {
 107                 error("Can't open help window: %s.", wwerror());
 108                 return;
 109         }
 110         wwprintf(w, "The escape character is %c.\n", escapec);
 111         wwprintf(w, "(# represents one of the digits from 1 to 9.)\n\n");
 112         if (help_print(w, "Short commands", help_shortcmd) >= 0)
 113                 (void) help_print(w, "Long commands", help_longcmd);
 114         closeiwin(w);
 115 }
 116
 117 int
 118 help_print(struct ww *w, const char *name, const char **list)
 119 {
 120         wwprintf(w, "%s:\n\n", name);
 121         while (*list)
 122                 switch (more(w, 0)) {
 123                 case 0:
 124                         wwputs(*list++, w);
 125                         wwputc('\n', w);
 126                         break;
 127                 case 1:
 128                         wwprintf(w, "%s: (continued)\n\n", name);
 129                         break;
 130                 case 2:
 131                         return -1;
 132                 }
 133         return more(w, 1) == 2 ? -1 : 0;
 134 }
 135
 136 void
 137 c_quit(void)
 138 {
 139         char oldterse = terse;
 140
 141         setterse(0);
 142         wwputs("Really quit [yn]? ", cmdwin);
 143         wwcurtowin(cmdwin);
 144         while (wwpeekc() < 0)
 145                 wwiomux();
 146         if (wwgetc() == 'y') {
 147                 wwputs("Yes", cmdwin);
 148                 quit++;
 149         } else
 150                 wwputc('\n', cmdwin);
 151         setterse(!quit && oldterse);
 152 }