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/*
* Copyright (C) 2010 Collabora Ltd.
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 2.1 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*
* Authors:
* Philip Withnall <philip.withnall@collabora.co.uk>
*/
using Folks;
using Gee;
using GLib;
/*
* signals — list signals we're currently connected to
* signals connect ClassName — connect to all the signals on all the instances
* of that class
* signals connect ClassName::signal — connect to the given signal on all the
* instances of that class
* signals connect 0xdeadbeef — connect to all the signals on a particular class
* instance
* signals connect 0xdeadbeef::signal — connect to the given signal on a
* particular class instance
* signals disconnect (as above)
* signals disconnect — signal handler ID
* signals ClassName — list all the signals on all the instances of that class,
* highlighting the ones we're currently connected to
* signals 0xdeadbeef — list all the signals on a particular class instance,
* highlighting the ones we're currently connected to
* signals ClassName::signal — show the details of this signal
* signals 0xdeadbeef::signal — show the details of this signal
*/
private class Folks.Inspect.Commands.Signals : Folks.Inspect.Command
{
public override string name
{
get { return "signals"; }
}
public override string description
{
get
{
return "Allow connection to and display of signals emitted by " +
"libfolks.";
}
}
public override string help
{
get
{
return "signals " +
"List signals we're currently connected to.\n" +
"signals connect [class name] " +
"Connect to all the signals on all the instances of that " +
"class.\n" +
"signals connect [class name]::[signal name] " +
"Connect to the given signal on all the instances of that " +
"class.\n" +
"signals connect [object pointer] " +
"Connect to all the signals on a particular class instance.\n" +
"signals connect [object pointer]::[signal name] " +
"Connect to the given signal on a particular class instance.\n" +
"signals disconnect " +
"(As for 'connect'.)\n" +
"signals [class name] " +
"List all the signals on all the instances of that class, " +
"highlighting the ones we're currently connected to.\n" +
"signals [object pointer] " +
"List all the signals on a particular class instance, " +
"highlighting the ones we're currently connected to.\n" +
"signals [class name]::[signal name] " +
"Show the details of this signal.\n" +
"signals [object pointer]::[signal name] " +
"Show the details of this signal.";
}
}
public Signals (Client client)
{
base (client);
}
public override void run (string? command_string)
{
if (command_string == null)
{
/* List all the signals we're connected to */
this.client.signal_manager.list_signals (Type.INVALID, null);
}
else
{
/* Parse subcommands */
string[] parts = command_string.split (" ", 2);
if (parts.length < 1)
{
Utils.print_line ("Unrecognised 'signals' command '%s'.",
command_string);
return;
}
Type class_type;
Object class_instance;
string signal_name;
string detail_string;
if (parts[0] == "connect" || parts[0] == "disconnect")
{
/* Connect to or disconnect from a signal */
if (parts[1] == null || parts[1].strip () == "")
{
Utils.print_line ("Unrecognised signal identifier '%s'.",
parts[1]);
return;
}
if (this.parse_signal_id (parts[1].strip (), out class_type,
out class_instance, out signal_name,
out detail_string) == false)
{
return;
}
/* FIXME: Handle "disconnect <signal ID>" */
if (parts[0] == "connect")
{
uint signal_count =
this.client.signal_manager.connect_to_signal (class_type,
class_instance, signal_name, detail_string);
Utils.print_line ("Connected to %u signals.", signal_count);
}
else
{
uint signal_count =
this.client.signal_manager.disconnect_from_signal (
class_type, class_instance, signal_name,
detail_string);
Utils.print_line ("Disconnected from %u signals.",
signal_count);
}
}
else
{
/* List some of the signals we're connected to, or display
* their details. */
if (this.parse_signal_id (parts[0].strip (), out class_type,
out class_instance, out signal_name,
out detail_string) == false)
{
return;
}
if (signal_name == null)
{
this.client.signal_manager.list_signals (class_type,
class_instance);
}
else
{
/* Get the class type from the instance */
if (class_type == Type.INVALID)
class_type = class_instance.get_type ();
this.client.signal_manager.show_signal_details (class_type,
signal_name, detail_string);
}
}
}
}
public override string[]? complete_subcommand (string subcommand)
{
/* @subcommand should be a backend name */
/* TODO */
return Readline.completion_matches (subcommand,
Utils.backend_name_completion_cb);
}
private bool parse_signal_id (string input,
out Type class_type,
out Object? class_instance,
out string? signal_name,
out string? detail_string)
{
/* We accept any of the following formats:
* ClassName::signal-name
* ClassName::signal-name::detail
* 0xdeadbeef::signal-name
* 0xdeadbeef::signal-name::detail
* ClassName
* 0xdeadbeef
*
* We output exactly one of class_type and class_instance, and optionally
* output signal_name and/or detail_string as appropriate.
*/
assert (input != null && input != "");
string[] parts = input.split ("::", 3);
string class_name_or_instance = parts[0];
string signal_name_inner = (parts.length > 1) ? parts[1] : null;
string detail_string_inner = (parts.length > 2) ? parts[2] : null;
if (signal_name_inner == "" || detail_string_inner == "")
{
Utils.print_line ("Invalid signal identifier '%s'.", input);
return false;
}
if (class_name_or_instance.length > 2 &&
class_name_or_instance[0] == '0' && class_name_or_instance[1] == 'x')
{
/* We have a class instance */
ulong address = class_name_or_instance.to_ulong (null, 16);
class_instance = (Object) address;
assert (class_instance.get_type ().is_object ());
}
else
{
/* We have a class name */
class_type = Type.from_name (class_name_or_instance);
if (class_type == Type.INVALID ||
(class_type.is_instantiatable () == false &&
class_type.is_interface () == false))
{
Utils.print_line ("Unrecognised class name '%s'.",
class_name_or_instance);
return false;
}
}
signal_name = signal_name_inner;
detail_string = detail_string_inner;
return true;
}
}
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