usr.bin/window/cmd2.c

   1 /*      $NetBSD: cmd2.c,v 1.7 2009/04/14 08:50:06 lukem Exp $   */
   2
   3 /*
   4  * Copyright (c) 1983, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * Edward Wang at The University of California, Berkeley.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 #include <sys/cdefs.h>
  36 #ifndef lint
  37 #if 0
  38 static char sccsid[] = "@(#)cmd2.c      8.1 (Berkeley) 6/6/93";
  39 #else
  40 __RCSID("$NetBSD: cmd2.c,v 1.7 2009/04/14 08:50:06 lukem Exp $");
  41 #endif
  42 #endif /* not lint */
  43
  44 #include "defs.h"
  45
  46 const char *help_shortcmd[] = {
  47         "#       Select window # and return to conversation mode",
  48         "%#      Select window # but stay in command mode",
  49         "escape  Return to conversation mode without changing window",
  50         "^^      Return to conversation mode and change to previous window",
  51         "c#      Close window #",
  52         "w       Open a new window",
  53         "m#      Move window #",
  54         "M#      Move window # to its previous position",
  55         "s#      Change the size of window #",
  56         "S#      Change window # to its previous size",
  57         "^Y      Scroll up one line",
  58         "^E      Scroll down one line",
  59         "^U      Scroll up half a window",
  60         "^D      Scroll down half a window",
  61         "^B      Scroll up a full window",
  62         "^F      Scroll down a full window",
  63         "h       Move cursor left",
  64         "j       Move cursor down",
  65         "k       Move cursor up",
  66         "l       Move cursor right",
  67         "y       Yank",
  68         "p       Put",
  69         "^S      Stop output in current window",
  70         "^Q      Restart output in current window",
  71         "^L      Redraw screen",
  72         "^Z      Suspend",
  73         "q       Quit",
  74         ":       Enter a long command",
  75         0
  76 };
  77
  78 const char *help_longcmd[] = {
  79         ":alias name string ...  Make `name' an alias for `string ...'",
  80         ":alias                  Show all aliases",
  81         ":close # ...            Close windows",
  82         ":close all              Close all windows",
  83         ":cursor modes           Set the cursor modes",
  84         ":echo # string ...      Print `string ...' in window #",
  85         ":escape c               Set escape character to `c'",
  86         ":foreground # flag      Make # a foreground window, if `flag' is true",
  87         ":label # string         Set label of window # to `string'",
  88         ":list                   List all open windows",
  89         ":default_nline lines    Set default window buffer size to `lines'",
  90         ":default_shell string ...",
  91         "                        Set default shell to `string ...'",
  92         ":default_smooth flag    Set default smooth scroll flag",
  93         ":select #               Select window #",
  94         ":smooth # flag          Set window # to smooth scroll mode",
  95         ":source filename        Execute commands in `filename'",
  96         ":terse flag             Set terse mode",
  97         ":unalias name           Undefine `name' as an alias",
  98         ":unset variable         Deallocate `variable'",
  99         ":variable               List all variables",
 100         ":window [row col nrow ncol nline label pty frame mapnl keepopen smooth shell]",
 101         "                        Open a window at `row', `col' of size `nrow', `ncol',",
 102         "                        with `nline' lines in the buffer, and `label'",
 103         ":write # string ...     Write `string ...' to window # as input",
 104         0
 105 };
 106
 107 int     help_print(struct ww *, const char *, const char **);
 108
 109 void
 110 c_help(void)
 111 {
 112         struct ww *w;
 113
 114         if ((w = openiwin(wwnrow - 3, "Help")) == 0) {
 115                 error("Can't open help window: %s.", wwerror());
 116                 return;
 117         }
 118         wwprintf(w, "The escape character is %c.\n", escapec);
 119         wwprintf(w, "(# represents one of the digits from 1 to 9.)\n\n");
 120         if (help_print(w, "Short commands", help_shortcmd) >= 0)
 121                 (void) help_print(w, "Long commands", help_longcmd);
 122         closeiwin(w);
 123 }
 124
 125 int
 126 help_print(struct ww *w, const char *name, const char **list)
 127 {
 128         wwprintf(w, "%s:\n\n", name);
 129         while (*list)
 130                 switch (more(w, 0)) {
 131                 case 0:
 132                         wwputs(*list++, w);
 133                         wwputc('\n', w);
 134                         break;
 135                 case 1:
 136                         wwprintf(w, "%s: (continued)\n\n", name);
 137                         break;
 138                 case 2:
 139                         return -1;
 140                 }
 141         return more(w, 1) == 2 ? -1 : 0;
 142 }
 143
 144 void
 145 c_quit(void)
 146 {
 147         char oldterse = terse;
 148
 149         setterse(0);
 150         wwputs("Really quit [yn]? ", cmdwin);
 151         wwcurtowin(cmdwin);
 152         while (wwpeekc() < 0)
 153                 wwiomux();
 154         if (wwgetc() == 'y') {
 155                 wwputs("Yes", cmdwin);
 156                 quit++;
 157         } else
 158                 wwputc('\n', cmdwin);
 159         setterse(!quit && oldterse);
 160 }