344 lines
9.1 KiB
C
344 lines
9.1 KiB
C
/* $NetBSD: nodemenu.c,v 1.1.1.3 2003/01/17 14:54:32 wiz Exp $ */
|
|
|
|
/* nodemenu.c -- produce a menu of all visited nodes.
|
|
Id: nodemenu.c,v 1.1 2002/08/25 23:38:38 karl Exp
|
|
|
|
Copyright (C) 1993, 1997, 1998, 2002 Free Software Foundation, Inc.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2, or (at your option)
|
|
any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
|
|
Written by Brian Fox (bfox@ai.mit.edu). */
|
|
|
|
#include "info.h"
|
|
|
|
/* Return a line describing the format of a node information line. */
|
|
static char *
|
|
nodemenu_format_info ()
|
|
{
|
|
return (_("\n\
|
|
* Menu:\n\
|
|
(File)Node Lines Size Containing File\n\
|
|
---------- ----- ---- ---------------"));
|
|
}
|
|
|
|
/* Produce a formatted line of information about NODE. Here is what we want
|
|
the output listing to look like:
|
|
|
|
* Menu:
|
|
(File)Node Lines Size Containing File
|
|
---------- ----- ---- ---------------
|
|
* (emacs)Buffers:: 48 2230 /usr/gnu/info/emacs/emacs-1
|
|
* (autoconf)Writing configure.in:: 123 58789 /usr/gnu/info/autoconf/autoconf-1
|
|
* (dir)Top:: 40 589 /usr/gnu/info/dir
|
|
*/
|
|
static char *
|
|
format_node_info (node)
|
|
NODE *node;
|
|
{
|
|
register int i, len;
|
|
char *parent, *containing_file;
|
|
static char *line_buffer = (char *)NULL;
|
|
|
|
if (!line_buffer)
|
|
line_buffer = (char *)xmalloc (1000);
|
|
|
|
if (node->parent)
|
|
{
|
|
parent = filename_non_directory (node->parent);
|
|
if (!parent)
|
|
parent = node->parent;
|
|
}
|
|
else
|
|
parent = (char *)NULL;
|
|
|
|
containing_file = node->filename;
|
|
|
|
if (!parent && !*containing_file)
|
|
sprintf (line_buffer, "* %s::", node->nodename);
|
|
else
|
|
{
|
|
char *file = (char *)NULL;
|
|
|
|
if (parent)
|
|
file = parent;
|
|
else
|
|
file = filename_non_directory (containing_file);
|
|
|
|
if (!file)
|
|
file = containing_file;
|
|
|
|
if (!*file)
|
|
file = "dir";
|
|
|
|
sprintf (line_buffer, "* (%s)%s::", file, node->nodename);
|
|
}
|
|
|
|
len = pad_to (36, line_buffer);
|
|
|
|
{
|
|
int lines = 1;
|
|
|
|
for (i = 0; i < node->nodelen; i++)
|
|
if (node->contents[i] == '\n')
|
|
lines++;
|
|
|
|
sprintf (line_buffer + len, "%d", lines);
|
|
}
|
|
|
|
len = pad_to (44, line_buffer);
|
|
sprintf (line_buffer + len, "%ld", node->nodelen);
|
|
|
|
if (node->filename && *(node->filename))
|
|
{
|
|
len = pad_to (51, line_buffer);
|
|
sprintf (line_buffer + len, node->filename);
|
|
}
|
|
|
|
return xstrdup (line_buffer);
|
|
}
|
|
|
|
/* Little string comparison routine for qsort (). */
|
|
static int
|
|
compare_strings (string1, string2)
|
|
char **string1, **string2;
|
|
{
|
|
return (strcasecmp (*string1, *string2));
|
|
}
|
|
|
|
/* The name of the nodemenu node. */
|
|
static char *nodemenu_nodename = "*Node Menu*";
|
|
|
|
/* Produce an informative listing of all the visited nodes, and return it
|
|
in a node. If FILTER_FUNC is non-null, it is a function which filters
|
|
which nodes will appear in the listing. FILTER_FUNC takes an argument
|
|
of NODE, and returns non-zero if the node should appear in the listing. */
|
|
NODE *
|
|
get_visited_nodes (filter_func)
|
|
Function *filter_func;
|
|
{
|
|
register int i, iw_index;
|
|
INFO_WINDOW *info_win;
|
|
NODE *node;
|
|
char **lines = (char **)NULL;
|
|
int lines_index = 0, lines_slots = 0;
|
|
|
|
if (!info_windows)
|
|
return ((NODE *)NULL);
|
|
|
|
for (iw_index = 0; (info_win = info_windows[iw_index]); iw_index++)
|
|
{
|
|
for (i = 0; i < info_win->nodes_index; i++)
|
|
{
|
|
node = info_win->nodes[i];
|
|
|
|
/* We skip mentioning "*Node Menu*" nodes. */
|
|
if (internal_info_node_p (node) &&
|
|
(strcmp (node->nodename, nodemenu_nodename) == 0))
|
|
continue;
|
|
|
|
if (node && (!filter_func || (*filter_func) (node)))
|
|
{
|
|
char *line;
|
|
|
|
line = format_node_info (node);
|
|
add_pointer_to_array
|
|
(line, lines_index, lines, lines_slots, 20, char *);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Sort the array of information lines, if there are any. */
|
|
if (lines)
|
|
{
|
|
register int j, newlen;
|
|
char **temp;
|
|
|
|
qsort (lines, lines_index, sizeof (char *), compare_strings);
|
|
|
|
/* Delete duplicates. */
|
|
for (i = 0, newlen = 1; i < lines_index - 1; i++)
|
|
{
|
|
/* Use FILENAME_CMP here, since the most important piece
|
|
of info in each line is the file name of the node. */
|
|
if (FILENAME_CMP (lines[i], lines[i + 1]) == 0)
|
|
{
|
|
free (lines[i]);
|
|
lines[i] = (char *)NULL;
|
|
}
|
|
else
|
|
newlen++;
|
|
}
|
|
|
|
/* We have free ()'d and marked all of the duplicate slots.
|
|
Copy the live slots rather than pruning the dead slots. */
|
|
temp = (char **)xmalloc ((1 + newlen) * sizeof (char *));
|
|
for (i = 0, j = 0; i < lines_index; i++)
|
|
if (lines[i])
|
|
temp[j++] = lines[i];
|
|
|
|
temp[j] = (char *)NULL;
|
|
free (lines);
|
|
lines = temp;
|
|
lines_index = newlen;
|
|
}
|
|
|
|
initialize_message_buffer ();
|
|
|
|
printf_to_message_buffer
|
|
("%s", replace_in_documentation
|
|
(_("Here is the menu of nodes you have recently visited.\n\
|
|
Select one from this menu, or use `\\[history-node]' in another window.\n")));
|
|
|
|
printf_to_message_buffer ("%s\n", nodemenu_format_info ());
|
|
|
|
for (i = 0; (lines != (char **)NULL) && (i < lines_index); i++)
|
|
{
|
|
printf_to_message_buffer ("%s\n", lines[i]);
|
|
free (lines[i]);
|
|
}
|
|
|
|
if (lines)
|
|
free (lines);
|
|
|
|
node = message_buffer_to_node ();
|
|
add_gcable_pointer (node->contents);
|
|
return (node);
|
|
}
|
|
|
|
DECLARE_INFO_COMMAND (list_visited_nodes,
|
|
_("Make a window containing a menu of all of the currently visited nodes"))
|
|
{
|
|
WINDOW *new;
|
|
NODE *node;
|
|
|
|
set_remembered_pagetop_and_point (window);
|
|
|
|
/* If a window is visible and showing the buffer list already, re-use it. */
|
|
for (new = windows; new; new = new->next)
|
|
{
|
|
node = new->node;
|
|
|
|
if (internal_info_node_p (node) &&
|
|
(strcmp (node->nodename, nodemenu_nodename) == 0))
|
|
break;
|
|
}
|
|
|
|
/* If we couldn't find an existing window, try to use the next window
|
|
in the chain. */
|
|
if (!new)
|
|
{
|
|
if (window->next)
|
|
new = window->next;
|
|
/* If there is more than one window, wrap around. */
|
|
else if (window != windows)
|
|
new = windows;
|
|
}
|
|
|
|
/* If we still don't have a window, make a new one to contain the list. */
|
|
if (!new)
|
|
{
|
|
WINDOW *old_active;
|
|
|
|
old_active = active_window;
|
|
active_window = window;
|
|
new = window_make_window ((NODE *)NULL);
|
|
active_window = old_active;
|
|
}
|
|
|
|
/* If we couldn't make a new window, use this one. */
|
|
if (!new)
|
|
new = window;
|
|
|
|
/* Lines do not wrap in this window. */
|
|
new->flags |= W_NoWrap;
|
|
node = get_visited_nodes ((Function *)NULL);
|
|
name_internal_node (node, nodemenu_nodename);
|
|
|
|
#if 0
|
|
/* Even if this is an internal node, we don't want the window
|
|
system to treat it specially. So we turn off the internalness
|
|
of it here. */
|
|
/* Why? We depend on internal_info_node_p returning true, so we must
|
|
not remove the flag. Otherwise, the *Node Menu* nodes themselves
|
|
appear in the node menu. --Andreas Schwab
|
|
<schwab@issan.informatik.uni-dortmund.de>. */
|
|
node->flags &= ~N_IsInternal;
|
|
#endif
|
|
|
|
/* If this window is already showing a node menu, reuse the existing node
|
|
slot. */
|
|
{
|
|
int remember_me = 1;
|
|
|
|
#if defined (NOTDEF)
|
|
if (internal_info_node_p (new->node) &&
|
|
(strcmp (new->node->nodename, nodemenu_nodename) == 0))
|
|
remember_me = 0;
|
|
#endif /* NOTDEF */
|
|
|
|
window_set_node_of_window (new, node);
|
|
|
|
if (remember_me)
|
|
remember_window_and_node (new, node);
|
|
}
|
|
|
|
active_window = new;
|
|
}
|
|
|
|
DECLARE_INFO_COMMAND (select_visited_node,
|
|
_("Select a node which has been previously visited in a visible window"))
|
|
{
|
|
char *line;
|
|
NODE *node;
|
|
REFERENCE **menu;
|
|
|
|
node = get_visited_nodes ((Function *)NULL);
|
|
|
|
menu = info_menu_of_node (node);
|
|
free (node);
|
|
|
|
line =
|
|
info_read_completing_in_echo_area (window, _("Select visited node: "), menu);
|
|
|
|
window = active_window;
|
|
|
|
/* User aborts, just quit. */
|
|
if (!line)
|
|
{
|
|
info_abort_key (window, 0, 0);
|
|
info_free_references (menu);
|
|
return;
|
|
}
|
|
|
|
if (*line)
|
|
{
|
|
REFERENCE *entry;
|
|
|
|
/* Find the selected label in the references. */
|
|
entry = info_get_labeled_reference (line, menu);
|
|
|
|
if (!entry)
|
|
info_error (_("The reference disappeared! (%s)."), line);
|
|
else
|
|
info_select_reference (window, entry);
|
|
}
|
|
|
|
free (line);
|
|
info_free_references (menu);
|
|
|
|
if (!info_error_was_printed)
|
|
window_clear_echo_area ();
|
|
}
|