File lswt-2.0.0.obscpio of Package lswt

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File lswt-2.0.0.obscpio of Package lswt

07070100000000000081A400000000000000000000000166474DD1000000D5000000000000000000000000000000000000001600000000lswt-2.0.0/.gitignore*.o
wlr-foreign-toplevel-management-unstable-v1.c
wlr-foreign-toplevel-management-unstable-v1.h
ext-foreign-toplevel-list-v1.c
ext-foreign-toplevel-list-v1.h
xdg-output-unstable-v1.c
xdg-output-unstable-v1.h
lswt
07070100000001000081A400000000000000000000000166474DD10000894D000000000000000000000000000000000000001300000000lswt-2.0.0/LICENSE                    GNU GENERAL PUBLIC LICENSE
                       Version 3, 29 June 2007

Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
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Also add information on how to contact you by electronic and paper mail.

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The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License.  Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".

You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<https://www.gnu.org/licenses/>.

The GNU General Public License does not permit incorporating your program
into proprietary programs.  If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library.  If this is what you want to do, use the GNU Lesser General
Public License instead of this License.  But first, please read
<https://www.gnu.org/licenses/why-not-lgpl.html>.
07070100000002000081A400000000000000000000000166474DD1000004FD000000000000000000000000000000000000001400000000lswt-2.0.0/MakefileSCANNER := wayland-scanner

PREFIX=/usr/local
BINDIR=$(PREFIX)/bin
MANDIR=$(PREFIX)/share/man
BASHCOMPDIR=$(PREFIX)/share/bash-completion/completions

CFLAGS+=-Wall -Werror -Wextra -Wpedantic
CFLAGS+=-Wno-unused-parameter -Wconversion -Wformat-security -Wformat -Wsign-conversion -Wfloat-conversion -Wunused-result
LIBS=-lwayland-client
OBJ=lswt.o wlr-foreign-toplevel-management-unstable-v1.o ext-foreign-toplevel-list-v1.o
GEN=wlr-foreign-toplevel-management-unstable-v1.c wlr-foreign-toplevel-management-unstable-v1.h ext-foreign-toplevel-list-v1.c ext-foreign-toplevel-list-v1.h

lswt: $(OBJ)
	$(CC) $(LDFLAGS) -o $@ $(OBJ) $(LIBS)

$(OBJ): $(GEN)

%.c: %.xml
	$(SCANNER) private-code < $< > $@

%.h: %.xml
	$(SCANNER) client-header < $< > $@

install: lswt
	install -d                     $(DESTDIR)$(BINDIR)
	install        lswt            $(DESTDIR)$(BINDIR)
	install -d                     $(DESTDIR)$(MANDIR)/man1
	install -m 644 lswt.1          $(DESTDIR)$(MANDIR)/man1
	install -d                     $(DESTDIR)$(BASHCOMPDIR)
	install        bash-completion $(DESTDIR)$(BASHCOMPDIR)/lswt

uninstall:
	$(RM) $(DESTDIR)$(BINDIR)/lswt
	$(RM) $(DESTDIR)$(MANDIR)/man1/lswt.1
	$(RM) $(DESTDIR)$(BASHCOMPDIR)/lswt

clean:
	$(RM) lswt $(GEN) $(OBJ)

.PHONY: clean install

07070100000003000081A400000000000000000000000166474DD1000000AB000000000000000000000000000000000000001200000000lswt-2.0.0/READMElswt - list Wayland toplevels

Requires the Wayland server to implement the foreign-toplevel-management-unstable-v1
protocol extension.

lswt is licensed under the GPLv3.
07070100000004000081A400000000000000000000000166474DD10000004B000000000000000000000000000000000000001B00000000lswt-2.0.0/bash-completioncomplete -W "-j --json -h --help -v --version -w --watch -c --custom" lswt
07070100000005000081A400000000000000000000000166474DD10000272D000000000000000000000000000000000000002C00000000lswt-2.0.0/ext-foreign-toplevel-list-v1.xml<?xml version="1.0" encoding="UTF-8"?>
<protocol name="ext_foreign_toplevel_list_v1">
  <copyright>
    Copyright © 2018 Ilia Bozhinov
    Copyright © 2020 Isaac Freund
    Copyright © 2022 wb9688
    Copyright © 2023 i509VCB

Permission to use, copy, modify, distribute, and sell this
    software and its documentation for any purpose is hereby granted
    without fee, provided that the above copyright notice appear in
    all copies and that both that copyright notice and this permission
    notice appear in supporting documentation, and that the name of
    the copyright holders not be used in advertising or publicity
    pertaining to distribution of the software without specific,
    written prior permission.  The copyright holders make no
    representations about the suitability of this software for any
    purpose.  It is provided "as is" without express or implied
    warranty.

THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
    SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
    FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
    SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
    AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
    ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
    THIS SOFTWARE.
  </copyright>

<description summary="list toplevels">
    The purpose of this protocol is to provide protocol object handles for
    toplevels, possibly originating from another client.

This protocol is intentionally minimalistic and expects additional
    functionality (e.g. creating a screencopy source from a toplevel handle,
    getting information about the state of the toplevel) to be implemented
    in extension protocols.

The compositor may choose to restrict this protocol to a special client
    launched by the compositor itself or expose it to all clients,
    this is compositor policy.

The key words "must", "must not", "required", "shall", "shall not",
    "should", "should not", "recommended",  "may", and "optional" in this
    document are to be interpreted as described in IETF RFC 2119.

Warning! The protocol described in this file is currently in the testing
    phase. Backward compatible changes may be added together with the
    corresponding interface version bump. Backward incompatible changes can
    only be done by creating a new major version of the extension.
  </description>

<interface name="ext_foreign_toplevel_list_v1" version="1">
    <description summary="list toplevels">
      A toplevel is defined as a surface with a role similar to xdg_toplevel.
      XWayland surfaces may be treated like toplevels in this protocol.

After a client binds the ext_foreign_toplevel_list_v1, each mapped
      toplevel window will be sent using the ext_foreign_toplevel_list_v1.toplevel
      event.

Clients which only care about the current state can perform a roundtrip after
      binding this global.

For each instance of ext_foreign_toplevel_list_v1, the compositor must
      create a new ext_foreign_toplevel_handle_v1 object for each mapped toplevel.

If a compositor implementation sends the ext_foreign_toplevel_list_v1.finished
      event after the global is bound, the compositor must not send any
      ext_foreign_toplevel_list_v1.toplevel events.
    </description>

<event name="toplevel">
      <description summary="a toplevel has been created">
        This event is emitted whenever a new toplevel window is created. It is
        emitted for all toplevels, regardless of the app that has created them.

All initial properties of the toplevel (identifier, title, app_id) will be sent
        immediately after this event using the corresponding events for
        ext_foreign_toplevel_handle_v1. The compositor will use the
        ext_foreign_toplevel_handle_v1.done event to indicate when all data has
        been sent.
      </description>
      <arg name="toplevel" type="new_id" interface="ext_foreign_toplevel_handle_v1"/>
    </event>

<event name="finished">
      <description summary="the compositor has finished with the toplevel manager">
        This event indicates that the compositor is done sending events
        to this object. The client should should destroy the object.
        See ext_foreign_toplevel_list_v1.destroy for more information.

The compositor must not send any more toplevel events after this event.
      </description>
    </event>

<request name="stop">
      <description summary="stop sending events">
        This request indicates that the client no longer wishes to receive
        events for new toplevels.

The Wayland protocol is asynchronous, meaning the compositor may send
        further toplevel events until the stop request is processed.
        The client should wait for a ext_foreign_toplevel_list_v1.finished
        event before destroying this object.
      </description>
    </request>

<request name="destroy" type="destructor">
      <description summary="destroy the ext_foreign_toplevel_list_v1 object">
        This request should be called either when the client will no longer
        use the ext_foreign_toplevel_list_v1 or after the finished event
        has been received to allow destruction of the object.

If a client wishes to destroy this object it should send a
        ext_foreign_toplevel_list_v1.stop request and wait for a ext_foreign_toplevel_list_v1.finished
        event, then destroy the handles and then this object.
      </description>
    </request>
  </interface>

<interface name="ext_foreign_toplevel_handle_v1" version="1">
    <description summary="a mapped toplevel">
      A ext_foreign_toplevel_handle_v1 object represents a mapped toplevel
      window. A single app may have multiple mapped toplevels.
    </description>

<request name="destroy" type="destructor">
      <description summary="destroy the ext_foreign_toplevel_handle_v1 object">
        This request should be used when the client will no longer use the handle
        or after the closed event has been received to allow destruction of the
        object.

When a handle is destroyed, a new handle may not be created by the server
        until the toplevel is unmapped and then remapped. Destroying a toplevel handle
        is not recommended unless the client is cleaning up child objects
        before destroying the ext_foreign_toplevel_list_v1 object, the toplevel
        was closed or the toplevel handle will not be used in the future.

Other protocols which extend the ext_foreign_toplevel_handle_v1
        interface should require destructors for extension interfaces be
        called before allowing the toplevel handle to be destroyed.
      </description>
    </request>

<event name="closed">
      <description summary="the toplevel has been closed">
        The server will emit no further events on the ext_foreign_toplevel_handle_v1
        after this event. Any requests received aside from the destroy request must
        be ignored. Upon receiving this event, the client should destroy the handle.

Other protocols which extend the ext_foreign_toplevel_handle_v1
        interface must also ignore requests other than destructors.
      </description>
    </event>

<event name="done">
      <description summary="all information about the toplevel has been sent">
        This event is sent after all changes in the toplevel state have
        been sent.

This allows changes to the ext_foreign_toplevel_handle_v1 properties
        to be atomically applied. Other protocols which extend the
        ext_foreign_toplevel_handle_v1 interface may use this event to also
        atomically apply any pending state.

This event must not be sent after the ext_foreign_toplevel_handle_v1.closed
        event.
      </description>
    </event>

<event name="title">
      <description summary="title change">
        The title of the toplevel has changed.

The configured state must not be applied immediately. See
        ext_foreign_toplevel_handle_v1.done for details.
      </description>
      <arg name="title" type="string"/>
    </event>

<event name="app_id">
      <description summary="app_id change">
        The app id of the toplevel has changed.

The configured state must not be applied immediately. See
        ext_foreign_toplevel_handle_v1.done for details.
      </description>
      <arg name="app_id" type="string"/>
    </event>

<event name="identifier">
      <description summary="a stable identifier for a toplevel">
        This identifier is used to check if two or more toplevel handles belong
        to the same toplevel.

The identifier is useful for command line tools or privileged clients
        which may need to reference an exact toplevel across processes or
        instances of the ext_foreign_toplevel_list_v1 global.

The compositor must only send this event when the handle is created.

The identifier must be unique per toplevel and it's handles. Two different
        toplevels must not have the same identifier. The identifier is only valid
        as long as the toplevel is mapped. If the toplevel is unmapped the identifier
        must not be reused. An identifier must not be reused by the compositor to
        ensure there are no races when sharing identifiers between processes.

An identifier is a string that contains up to 32 printable ASCII bytes.
        An identifier must not be an empty string. It is recommended that a
        compositor includes an opaque generation value in identifiers. How the
        generation value is used when generating the identifier is implementation
        dependent.
      </description>
      <arg name="identifier" type="string"/>
    </event>
  </interface>
</protocol>
07070100000006000081A400000000000000000000000166474DD100000A0F000000000000000000000000000000000000001200000000lswt-2.0.0/lswt.1.TH LSWT 1 2024-05-17 "git.sr.ht/~leon_plickat/lswt" "General Commands Manual"
.
.SH NAME
.P
lswt \- list Wayland toplevels
.
.
.SH SYNOPSIS
.SY lswt
.OP \-j
.OP \-\-json
.OP \-c custom-format
.OP \-\-custom custom-format
.YS
.
.SY lswt
.OP \-h
.OP \-\-help
.YS
.
.SY lswt
.OP \-w
.OP \-\-watch
.YS
.
.
.SY lswt
.OP \-v
.OP \-\-version
.YS
.
.
.SH DESCRIPTION
.P
lswt lists all toplevels ("Windows") advertised by a Wayland server.
.P
The default output prints the title and app-id the toplevels
and - if available - their state in human readable form.
.P
The \fBstate\fR is a four wide character field, corresponding to the four
possible toplevel states: maximized, minimized, activated and fullscreen.
If one of these states is true for a toplevel, the respective character in the
field is set to the first letter of the state name, otherwise it is \-.
.P
lswt provides two output formats intended to be machine parseable:
JSON and CSV.
If the CSV output is chosen, a custom format must be provided,
which specifies the information about the toplevels lswt should
print.
The JSON output is versioned.
.P
The information is querried from the Wayland server via one of
the following protocols:
.IP \(bu 2
ext-foreign-toplevel-list-v1 (preferred)
.IP \(bu 2
wlr-foreign-toplevel-management-unstable-v1
.P
As of now, only the ext- protocol supports unique toplevel IDs and
only the wlr- protocol supports toplevel states.
.P
lswt also supports a watch mode, which will run continuosly and log whenever
toplevels change their app-id or title.
The watch mode is incompatible with the JSON and CSV output formats.
.
.
.SH OPTIONS
.P
\fB-h\fR, \fB--help\fR
.RS
Print help text and exit.
.RE
.
.P
\fB-v\fR, \fB--version\fR
.RS
Print version and exit.
.RE
.
.P
\fB-w\fR, \fB--watch\fR
.RS
Run in watch mode.
.RE
.
.P
\fB-j\fR, \fB--json\fR
.RS
Output data in the JSON format.
.RE
.
.P
\fB-c\fR \fIcustom-format\fR, \fB--custom\fR \fIcustom-format\fR
.RS
Output data in the CSV format.
A custom format must be provided which specifies which information
about the toplevels lswt should print.
This format is a string where each character corresponds to one field.
Fields can be specified multiple times.
At least one field must be provided.
The following fields are supported:
.
.ad l
.RS
.TS
tab(@);
l l
---
l l.
\fBCHARACTER\fR@\fBFIELD\fR
t@title
a@T{
app-id
T}
i@T{
unique identifier
T}
A@T{
activated? ("focused?")
T}
f@T{
fullscreen?
T}
m@T{
minimized?
T}
M@T{
maximized?
T}
.TE
.RE
.ad
.RE
.
.
.SH AUTHOR
.P
.MT leonhenrik.plickat@stud.uni-goettingen.de
Leon Henrik Plickat
.ME
07070100000007000081A400000000000000000000000166474DD1000082BE000000000000000000000000000000000000001200000000lswt-2.0.0/lswt.c/*
 * lswt - list Wayland toplevels
 *
 * Copyright (C) 2021 - 2023 Leon Henrik Plickat
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3 as published
 * by the Free Software Foundation.
 *
 * 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, see <https://www.gnu.org/licenses/>.
 */

#include <ctype.h>
#include <signal.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <assert.h>
#include <setjmp.h>
#include <wayland-client.h>

#ifdef __linux__
#include <features.h>
#include <linux/landlock.h>
#include <sys/syscall.h>
#ifdef __GLIBC__
#include<execinfo.h>
#endif
#endif

#include "wlr-foreign-toplevel-management-unstable-v1.h"
#include "ext-foreign-toplevel-list-v1.h"

#define BOOL_TO_STR(B) (B) ? "true" : "false"

#define VERSION "2.0.0"

const char usage[] =
	"Usage: lswt [options...]\n"
	"  -h,       --help           Print this helpt text and exit.\n"
	"  -v,       --version        Print version and exit.\n"
	"  -j,       --json           Output data in JSON format.\n"
	"  -w,       --watch          Run continously and log events.\n"
	"  -c <fmt>, --custom <fmt>   Define a custom line-based output format.\n";

enum Output_format
{
	NORMAL,
	CUSTOM,
	JSON,
};
enum Output_format output_format = NORMAL;
char *custom_output_format = NULL;
const char custom_output_delim = ',';

enum Mode
{
	LIST,
	WATCH,
};
enum Mode mode = LIST;

/** Used for padding when printing output in NORMAL format. */
size_t longest_app_id = 7; // strlen("app-id:")
const size_t max_app_id_padding = 40;

int ret = EXIT_SUCCESS;
bool loop = true;
bool debug_log = false;

struct wl_display *wl_display = NULL;
struct wl_registry *wl_registry = NULL;
struct wl_callback *sync_callback = NULL;

/* We implement both the new protocol (ext-*) as well as the old one it is based
 * on (zwlr-*), since there likely are compositors still stuck with the legacy
 * one for a while.
 * NOTE: zwlr-foreign-toplevel-management-v1 support will be deprecated eventually!
 */
struct zwlr_foreign_toplevel_manager_v1 *zwlr_toplevel_manager = NULL;
struct ext_foreign_toplevel_list_v1 *ext_toplevel_list = NULL;

enum UsedProtocol
{
	NONE,
	ZWLR_FOREIGN_TOPLEVEL,
	EXT_FOREIGN_TOPLEVEL,
};
enum UsedProtocol used_protocol;

struct wl_list toplevels;

/* We want to cleanly exit on SIGINT (f.e. when Ctrl-C is pressed in WATCH mode)
 * however after exiting the signal handler wl_display_dispatch() will just
 * continue until the next event from the server. We can not sync in the signal
 * handler, so let's just long-jump to right before the main-loop and skip it.
 */
jmp_buf skip_main_loop;

/**********************
 *                    *
 *    Capabilities    *
 *                    *
 **********************/
bool support_fullscreen = false;
bool support_activated = false;
bool support_maximized = false;
bool support_minimized = false;
bool support_identifier = false;

bool print_state = false;

static void update_capabilities (void)
{
	switch (used_protocol)
	{
		case ZWLR_FOREIGN_TOPLEVEL:
			support_fullscreen = true;
			support_activated = true;
			support_maximized = true;
			support_minimized = true;
			break;

case EXT_FOREIGN_TOPLEVEL:
			support_identifier = true;
			break;

case NONE: /* Unreachable. */
			assert(false);
			break;
	}

if ( support_fullscreen && support_activated && support_maximized && support_minimized )
		print_state = true;
}

/******************
 *                *
 *    Toplevel    *
 *                *
 ******************/
struct Toplevel
{
	struct wl_list link;

/** Internal id, used in WATCH mode. */
	size_t id;

struct zwlr_foreign_toplevel_handle_v1 *zwlr_handle;
	struct ext_foreign_toplevel_handle_v1 *ext_handle;

char *title;
	char *app_id;

/**
	 * Optional data. Whether these are supported depends on the bound
	 * protocol(s). See update_capabilities() and related globals.
	 */
	char *identifier;
	bool fullscreen;
	bool activated;
	bool maximized;
	bool minimized;

/**
	 * True if this toplevel has already been added to the list, false
	 * otherwise. Used to prevent accidentally appending the same toplevel
	 * multiple times if toplevel_handle_done is called more than once.
	 */
	bool listed;
};

/** Allocate a new Toplevel and initialize it. Returns pointer to the Toplevel. */
static struct Toplevel *toplevel_new (void)
{
	struct Toplevel *new = calloc(1, sizeof(struct Toplevel));
	if ( new == NULL )
	{
		fprintf(stderr, "ERROR: calloc(): %s\n", strerror(errno));
		return NULL;
	}

static size_t id_counter = 0;

new->id = id_counter++;
	new->zwlr_handle = NULL;
	new->ext_handle = NULL;
	new->title = NULL;
	new->app_id = NULL;
	new->identifier = NULL;
	new->listed = false;

new->fullscreen = false;
	new->activated = false;
	new->maximized = false;
	new->minimized = false;

if ( mode == WATCH || debug_log )
		fprintf(stdout, "toplevel %ld: created\n", new->id);

return new;
}

/** Destroys a toplevel and removes it from the list, if it is listed. */
static void toplevel_destroy (struct Toplevel *self)
{
	if ( mode == WATCH || debug_log )
		fprintf(stdout, "toplevel %ld: destroyed\n", self->id);

if ( self->zwlr_handle != NULL )
		zwlr_foreign_toplevel_handle_v1_destroy(self->zwlr_handle);
	if ( self->ext_handle != NULL )
		ext_foreign_toplevel_handle_v1_destroy(self->ext_handle);
	if ( self->title != NULL )
		free(self->title);
	if ( self->app_id != NULL )
		free(self->app_id);
	if ( self->identifier != NULL )
		free(self->identifier);
	if (self->listed)
		wl_list_remove(&self->link);
	free(self);
}

/** Set the title of the toplevel. Called from protocol implementations. */
static void toplevel_set_title (struct Toplevel *self, const char *title)
{
	if ( mode == WATCH || debug_log )
		fprintf(stdout, "toplevel %ld: set title: '%s' -> '%s'\n",
				self->id, self->title, title);

if ( self->title != NULL )
		free(self->title);
	self->title = strdup(title);
	if ( self->title == NULL )
		fprintf(stderr, "ERROR: strdup(): %s\n", strerror(errno));
}

/** Set the app-id of the toplevel. Called from protocol implementations. */
static size_t real_strlen (const char *str);
static void toplevel_set_app_id (struct Toplevel *self, const char *app_id)
{
	if ( mode == WATCH || debug_log )
		fprintf(stdout, "toplevel %ld: set app-id: '%s' -> '%s'\n",
				self->id, self->app_id, app_id);

if ( self->app_id != NULL )
		free(self->app_id);
	self->app_id = strdup(app_id);
	if ( self->app_id == NULL )
	{
		fprintf(stderr, "ERROR: strdup(): %s\n", strerror(errno));
		return;
	}

/* Used when printing output in the default human readable format. */
	const size_t len = real_strlen(app_id);
	if ( len > longest_app_id && max_app_id_padding > len )
		longest_app_id = len;
}

/** Set the identifier of the toplevel. Called from protocol implementations. */
static void toplevel_set_identifier (struct Toplevel *self, const char *identifier)
{
	if ( mode == WATCH || debug_log )
		fprintf(stdout, "toplevel %ld: set identifier: %s\n",
				self->id, identifier);

if ( self->identifier != NULL )
	{
		fputs(
			"ERROR: protocol-error: Compositor changed identifier of toplevel, "
			"which is forbidden by the protocol. Continuing anyway...\n",
			stderr
		);
		free(self->identifier);
	}
	self->identifier = strdup(identifier);
	if ( self->identifier == NULL )
		fprintf(stderr, "ERROR: strdup(): %s\n", strerror(errno));
}

static void toplevel_set_fullscreen (struct Toplevel *self, bool fullscreen)
{
	if (debug_log)
		fprintf(stdout, "[toplevel %ld: set fullscreen: %d]\n",
				self->id, fullscreen);
	self->fullscreen = fullscreen;
}

static void toplevel_set_activated (struct Toplevel *self, bool activated)
{
	if (debug_log)
		fprintf(stdout, "[toplevel %ld: set activated: %d]\n",
				self->id, activated);
	self->activated = activated;
}

static void toplevel_set_maximized (struct Toplevel *self, bool maximized)
{
	if (debug_log)
		fprintf(stdout, "[toplevel %ld: set maximized: %d]\n",
				self->id, maximized);
	self->maximized = maximized;
}

static void toplevel_set_minimized (struct Toplevel *self, bool minimized)
{
	if (debug_log)
		fprintf(stdout, "[toplevel %ld: set minimized: %d]\n",
				self->id, minimized);
	self->minimized = minimized;
}

static void toplevel_done (struct Toplevel *self)
{
	if (debug_log)
		fprintf(stderr, "[toplevel %ld: done]\n", self->id);

if (self->listed)
		return;
	self->listed = true;

wl_list_insert(&toplevels, &self->link);
}

/*****************************************************
 *                                                   *
 *    ext-foreign-toplevel-list-v1 implementation    *
 *                                                   *
 *****************************************************/
static void ext_foreign_handle_handle_identifier
(
	void *data,
	struct ext_foreign_toplevel_handle_v1 *handle,
	const char *identifier
)
{
	struct Toplevel *toplevel = (struct Toplevel *)data;
	toplevel_set_identifier(toplevel, identifier);
}

static void ext_foreign_handle_handle_title
(
	void *data,
	struct ext_foreign_toplevel_handle_v1 *handle,
	const char *title
)
{
	struct Toplevel *toplevel = (struct Toplevel *)data;
	toplevel_set_title(toplevel, title);
}

static void ext_foreign_handle_handle_app_id
(
	void *data,
	struct ext_foreign_toplevel_handle_v1 *handle,
	const char *app_id
)
{
	struct Toplevel *toplevel = (struct Toplevel *)data;
	toplevel_set_app_id(toplevel, app_id);
}

static void ext_foreign_handle_handle_done
(
	void *data,
	struct ext_foreign_toplevel_handle_v1 *handle
)
{
	struct Toplevel *toplevel = (struct Toplevel *)data;
	toplevel_done(toplevel);
}

static void ext_foreign_handle_handle_closed
(
	void *data,
	struct ext_foreign_toplevel_handle_v1 *handle
)
{
	/* We only care when watching for events. */
	if ( mode == WATCH )
	{
		struct Toplevel *toplevel = (struct Toplevel *)data;
		toplevel_destroy(toplevel);
	}
}

static const struct ext_foreign_toplevel_handle_v1_listener ext_handle_listener = {
	.app_id       = ext_foreign_handle_handle_app_id,
	.closed       = ext_foreign_handle_handle_closed,
	.done         = ext_foreign_handle_handle_done,
	.identifier   = ext_foreign_handle_handle_identifier,
	.title        = ext_foreign_handle_handle_title,
};

static void ext_toplevel_list_handle_toplevel
(
	void *data,
	struct ext_foreign_toplevel_list_v1 *list,
	struct ext_foreign_toplevel_handle_v1 *handle
)
{
	if ( used_protocol != EXT_FOREIGN_TOPLEVEL )
	{
		assert(used_protocol != NONE);
		ext_foreign_toplevel_handle_v1_destroy(handle);
		return;
	}

struct Toplevel *toplevel = toplevel_new();
	if ( toplevel == NULL )
		return;
	toplevel->ext_handle = handle;
	ext_foreign_toplevel_handle_v1_add_listener(
		handle,
		&ext_handle_listener,
		toplevel
	);
}

static void ext_toplevel_list_handle_finished
(
	void *data,
	struct ext_foreign_toplevel_list_v1 *list
)
{
	/* deliberately left empty */
}

static const struct ext_foreign_toplevel_list_v1_listener ext_toplevel_list_listener = {
	.toplevel = ext_toplevel_list_handle_toplevel,
	.finished = ext_toplevel_list_handle_finished,
};

/************************************************************
 *                                                          *
 *    zwlr-foreign-toplevel-management-v1 implementation    *
 *                                                          *
 ************************************************************/
static void zwlr_foreign_handle_handle_title
(
	void *data,
	struct zwlr_foreign_toplevel_handle_v1 *handle,
	const char *title
)
{
	struct Toplevel *toplevel = (struct Toplevel *)data;
	toplevel_set_title(toplevel, title);
}

static void zwlr_foreign_handle_handle_app_id
(
	void *data,
	struct zwlr_foreign_toplevel_handle_v1 *handle,
	const char *app_id
)
{
	struct Toplevel *toplevel = (struct Toplevel *)data;
	toplevel_set_app_id(toplevel, app_id);
}

static void zwlr_foreign_handle_handle_state
(
	void *data,
	struct zwlr_foreign_toplevel_handle_v1 *handle,
	struct wl_array *states
)
{
	struct Toplevel *toplevel = (struct Toplevel *)data;

bool fullscreen = false;
	bool activated = false;
	bool minimized = false;
	bool maximized = false;

uint32_t *state;
	wl_array_for_each(state, states) switch (*state)
	{
		case ZWLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_MAXIMIZED: maximized = true; break;
		case ZWLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_MINIMIZED: minimized = true; break;
		case ZWLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_ACTIVATED: activated = true; break;
		case ZWLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_FULLSCREEN: fullscreen = true; break;
	}

toplevel_set_fullscreen(toplevel, fullscreen);
	toplevel_set_activated(toplevel, activated);
	toplevel_set_minimized(toplevel, minimized);
	toplevel_set_maximized(toplevel, maximized);
}

static void zwlr_foreign_handle_handle_done
(
	void *data,
	struct zwlr_foreign_toplevel_handle_v1 *handle
)
{
	struct Toplevel *toplevel = (struct Toplevel *)data;
	toplevel_done(toplevel);
}

static void zwlr_foreign_handle_handle_closed
(
	void *data,
	struct zwlr_foreign_toplevel_handle_v1 *handle
)
{
	/* We only care when watching for events. */
	if ( mode == WATCH )
	{
		struct Toplevel *toplevel = (struct Toplevel *)data;
		toplevel_destroy(toplevel);
	}
}

static void zwlr_foreign_handle_handle_output_enter
(
	void *data,
	struct zwlr_foreign_toplevel_handle_v1 *handle,
	struct wl_output *output
)
{
	/* deliberately left empty */
}

static void zwlr_foreign_handle_handle_output_leave
(
	void *data,
	struct zwlr_foreign_toplevel_handle_v1 *handle,
	struct wl_output *output
)
{
	/* deliberately left empty */
}

static void zwlr_foreign_handle_handle_parent
(
	void *data,
	struct zwlr_foreign_toplevel_handle_v1 *handle,
	struct zwlr_foreign_toplevel_handle_v1 *parent
)
{
	/* deliberately left empty */
}

static const struct zwlr_foreign_toplevel_handle_v1_listener zwlr_handle_listener = {
	.app_id       = zwlr_foreign_handle_handle_app_id,
	.done         = zwlr_foreign_handle_handle_done,
	.closed       = zwlr_foreign_handle_handle_closed,
	.output_enter = zwlr_foreign_handle_handle_output_enter,
	.output_leave = zwlr_foreign_handle_handle_output_leave,
	.parent       = zwlr_foreign_handle_handle_parent,
	.state        = zwlr_foreign_handle_handle_state,
	.title        = zwlr_foreign_handle_handle_title,
};

static void zwlr_toplevel_manager_handle_toplevel
(
	void *data,
	struct zwlr_foreign_toplevel_manager_v1 *manager,
	struct zwlr_foreign_toplevel_handle_v1 *handle
)
{
	if ( used_protocol != ZWLR_FOREIGN_TOPLEVEL )
	{
		assert(used_protocol != NONE);
		zwlr_foreign_toplevel_handle_v1_destroy(handle);
		return;
	}

struct Toplevel *toplevel = toplevel_new();
	if ( toplevel == NULL )
		return;
	toplevel->zwlr_handle = handle;
	zwlr_foreign_toplevel_handle_v1_add_listener(
		handle,
		&zwlr_handle_listener,
		toplevel
	);
}

static void zwlr_toplevel_manager_handle_finished
(
	void *data,
	struct zwlr_foreign_toplevel_manager_v1 *manager
)
{
	/* deliberately left empty */
}

static const struct zwlr_foreign_toplevel_manager_v1_listener zwlr_toplevel_manager_listener = {
	.toplevel = zwlr_toplevel_manager_handle_toplevel,
	.finished = zwlr_toplevel_manager_handle_finished,
};

/************************
 *                      *
 *    Command output    *
 *                      *
 ************************/
static bool string_needs_quotes (char *str)
{
	for (; *str != '\0'; str++)
		if ( isspace(*str) || *str == '"' || *str == '\'' || !isascii(*str) )
			return true;
	return false;
}

static void quoted_fputs (size_t *len, char *str, FILE *restrict f)
{
	if ( str == NULL )
	{
		if ( len != NULL )
			*len = 0;
		return;
	}

size_t l = 2; // Two bytes for the two mandatory quotes.

fputc('"', f);
	for (; *str != '\0'; str++)
	{
		if ( *str == '"' )
		{
			l += 2;
			fputs("\\\"", f);
		}
		else if ( *str == '\n' )
		{
			l += 2;
			fputs("\\n", f);
		}
		else if ( *str == '\t' )
		{
			l += 2;
			fputs("\\t", f);
		}
		else
		{
			l += 1;
			fputc(*str, f);
		}
	}
	fputc('"', f);

if ( len != NULL )
		*len = l;
}

static void write_padding (size_t used_len, size_t padding, FILE *restrict f)
{
	if ( padding > used_len )
		for (size_t i = padding - used_len; i > 0; i--)
			fputc(' ', f);
}

static void write_padded (size_t padding, char *str, FILE *restrict f)
{
	size_t len = 0;
	if ( str == NULL )
	{
		fputs("<NULL>", f);
		len = strlen("<NULL>");
	}
	else
	{
		len = strlen(str);
		fputs(str, f);
	}
	write_padding(len, padding, f);
}

static void write_padded_maybe_quoted (size_t padding, char *str, FILE *restrict f)
{
	size_t len = 0;
	if ( str == NULL )
	{
		fputs("<NULL>", f);
		len = strlen("<NULL>");
	}
	else  if (string_needs_quotes(str))
		quoted_fputs(&len, str, f);
	else
	{
		len = strlen(str);
		fputs(str, f);
	}
	write_padding(len, padding, f);
}

static void write_maybe_quoted (char *str, FILE *restrict f)
{
	if ( str == NULL )
		fputs("<NULL>", f);
	else  if (string_needs_quotes(str))
		quoted_fputs(NULL, str, f);
	else
		fputs(str, f);
}

/** Always quote strings, except if they are NULL. */
static void write_json (char *str, FILE *restrict f)
{
	if ( str == NULL )
		fputs("null", f);
	else
		quoted_fputs(NULL, str, f);
}

/** Never quote strings, escape commas, print "<NULL>" on NULL. */
static void write_custom (char *str, FILE *restrict f)
{
	if ( str == NULL )
		fputs("<NULL>", f);
	else
	{
		for (; *str != '\0'; str++)
		{
			if ( *str == ',' )
				fputs("\\,", f);
			else
				fputc(*str, f);
		}
	}
}

static void write_custom_optional (bool supported, char *str, FILE *restrict f)
{
	if (supported)
		write_custom(str, f);
	else
		fputs("unsupported", f);
}

static void write_custom_optional_bool (bool supported, bool b, FILE *restrict f)
{
	if (supported)
		fputs(b ? "true" : "false", f);
	else
		fputs("unsupported", f);
}

/** Return the amount of bytes printed when printing the given string. */
static size_t real_strlen (const char *str)
{
	size_t i = 0;
	bool has_space = false;
	for(; *str != '\0'; str++)
	{
		switch (*str)
		{
			case '"':
			case '\\':
			case '\n':
			case '\t':
				i += 2;
				break;

default:
				if (isspace(*str))
					has_space = true;
				i++;
				break;
		}
	}
	if (has_space)
		i += 2;
	return i;
}

static void out_start_bold (void)
{
	if (isatty(fileno(stdout)))
		fputs("\x1b[0;1m", stdout);
}

static void out_end_bold (void)
{
	if (isatty(fileno(stdout)))
		fputs("\x1b[0m", stdout);
}

/**
 * Checks whether a custom output format is valid. Prints error messages
 * accordingly.
 */
static bool out_check_custom_format (const char *fmt)
{
	assert(fmt != NULL);
	const size_t len = strlen(fmt);
	if ( len == 0 )
	{
		fputs("ERROR: Invalid custom format: Requires at least one field.\n", stderr);
		return false;
	}

for (; *fmt != '\0'; fmt++)
	{
		switch (*fmt)
		{
			case 't': // Title.
			case 'a': // App-Id.
			case 'i': // Identifier.
			case 'A': // Activated.
			case 'f': // Fullscreen.
			case 'm': // Minimized.
			case 'M': // Maximized.
				continue;

default:
				fprintf(
					stderr,
					"ERROR: Invalid custom format: Unknown field name: '%c'.\n"
					"INFO:  Supported field names:\n"
					"\tt: title\n"
					"\ta: app-id\n"
					"\ti: identifier\n"
					"\tA: activated?\n"
					"\tf: fullscreen?\n"
					"\tm: minimized?\n"
					"\tM: maximized?\n",
					*fmt
				);
				return false;
		}
	}

return true;
}

static void out_write_toplevel_state (struct Toplevel *toplevel, FILE *restrict f)
{
	fputc(toplevel->maximized ? 'm' : '-', f);
	fputc(toplevel->minimized ? 'm' : '-', f);
	fputc(toplevel->activated ? 'a' : '-', f);
	fputc(toplevel->fullscreen ? 'f' : '-', f);
}

static void out_write_toplevel (struct Toplevel *toplevel)
{
	static bool json_prev = false;
	switch (output_format)
	{
		case NORMAL:
			if (print_state)
			{
				out_write_toplevel_state(toplevel, stdout);
				fputs("     ", stdout);
			}
			write_padded_maybe_quoted(longest_app_id, toplevel->app_id, stdout);
			fputs("   ", stdout);
			write_maybe_quoted(toplevel->title, stdout);
			fputc('\n', stdout);
			break;

case JSON:
			if (json_prev)
				fputs(",\n", stdout);
			else
				json_prev = true;
			fputs("        {\n", stdout);

if (support_activated)
				fprintf(stdout, "            \"activated\": %s,\n", BOOL_TO_STR(toplevel->activated));
			if (support_fullscreen)
				fprintf(stdout, "            \"fullscreen\": %s,\n", BOOL_TO_STR(toplevel->fullscreen));
			if (support_minimized)
				fprintf(stdout, "            \"minimized\": %s,\n", BOOL_TO_STR(toplevel->minimized));
			if (support_maximized)
				fprintf(stdout, "            \"maximized\": %s,\n", BOOL_TO_STR(toplevel->maximized));
			if (support_identifier)
				fprintf(stdout, "            \"identifier\": %s,\n", toplevel->identifier);

/* Whoever designed JSON made the incredibly weird
			 * mistake of enforcing that there is no comma on the
			 * last item. Luckily, there are two fields we know
			 * will always be printed. So by putting them last,
			 * we can easiely implement that. :)
			 */
			fputs("            \"title\": ", stdout);
			write_json(toplevel->title, stdout);
			fputs(",\n            \"app-id\": ", stdout);
			write_json(toplevel->app_id, stdout);
			fputs("\n        }", stdout);
			break;

case CUSTOM:
			assert(custom_output_format != NULL);
			assert(strlen(custom_output_format) > 0);
			bool need_delim = false;
			char *fmt = custom_output_format;
			for (; *fmt != '\0'; fmt++)
			{
				if (need_delim)
					fputc(custom_output_delim, stdout);
				else
					need_delim = true;
				switch (*fmt)
				{
					case 't': write_custom(toplevel->title, stdout); break;
					case 'a': write_custom(toplevel->app_id, stdout); break;
					case 'i': write_custom_optional(support_identifier, toplevel->identifier, stdout); break;
					case 'A': write_custom_optional_bool(support_activated, toplevel->activated, stdout); break;
					case 'f': write_custom_optional_bool(support_fullscreen, toplevel->fullscreen, stdout); break;
					case 'm': write_custom_optional_bool(support_minimized, toplevel->minimized, stdout); break;
					case 'M': write_custom_optional_bool(support_maximized, toplevel->maximized, stdout); break;
					default: assert(false); break;
				}
			}
			fputs("\n", stdout);
			break;
	}
}

static void out_start (void)
{
	switch (output_format)
	{
		case NORMAL:
			out_start_bold();
			if (print_state)
				fputs("state:   ", stdout);
			write_padded(longest_app_id, "app-id:", stdout);
			fputs("   ", stdout);
			fputs("title:", stdout);
			fputc('\n', stdout);
			out_end_bold();
			return;

case JSON:
			fprintf(
				stdout,
				"{\n"
				"    \"json-output-version\": 2,\n"
				"    \"supported-data\": {\n"
				"        \"title\": true,\n"
				"        \"app-id\": true,\n"
				"        \"identifier\": %s,\n"
				"        \"fullscreen\": %s,\n"
				"        \"activated\": %s,\n"
				"        \"minimized\": %s,\n"
				"        \"maximized\": %s\n"
				"    },\n"
				"    \"toplevels\": [\n",
				BOOL_TO_STR(support_identifier),
				BOOL_TO_STR(support_fullscreen),
				BOOL_TO_STR(support_activated),
				BOOL_TO_STR(support_minimized),
				BOOL_TO_STR(support_maximized)
			);
			break;

case CUSTOM:
			break;
	}
}

static void out_finish (void)
{
	switch (output_format)
	{
		case NORMAL:
			return;

case JSON:
			fputs("\n    ]\n}\n", stdout);
			break;

case CUSTOM:
			break;
	}
}

/********************************
 *                              *
 *    main and Wayland logic    *
 *                              *
 ********************************/
static void registry_handle_global
(
	void *data,
	struct wl_registry *registry,
	uint32_t name,
	const char *interface,
	uint32_t version
)
{
	if ( strcmp(interface, zwlr_foreign_toplevel_manager_v1_interface.name) == 0 )
	{
		if ( version < 3 )
			return;
		if (debug_log)
			fputs("[Binding zwlr-foreign-toplevel-manager-v1.]\n", stderr);
		zwlr_toplevel_manager = wl_registry_bind(
			wl_registry,
			name,
			&zwlr_foreign_toplevel_manager_v1_interface,
			3
		);
		zwlr_foreign_toplevel_manager_v1_add_listener(
			zwlr_toplevel_manager,
			&zwlr_toplevel_manager_listener,
			NULL
		);
	}
	else if ( strcmp(interface, ext_foreign_toplevel_list_v1_interface.name) == 0 )
	{
		if (debug_log)
			fputs("[Binding ext-foreign-toplevel-list-v1.]\n", stderr);
		ext_toplevel_list = wl_registry_bind(
			wl_registry,
			name,
			&ext_foreign_toplevel_list_v1_interface,
			1
		);
		ext_foreign_toplevel_list_v1_add_listener(
			ext_toplevel_list,
			&ext_toplevel_list_listener,
			NULL
		);
	}
}

static void registry_handle_global_remove
(
	void *data,
	struct wl_registry *registry,
	uint32_t name
)
{
	/* deliberately left empty */
}

static const struct wl_registry_listener registry_listener = {
	.global        = registry_handle_global,
	.global_remove = registry_handle_global_remove,
};

static void sync_handle_done
(
	void *data,
	struct wl_callback *wl_callback,
	uint32_t other_data
);
static const struct wl_callback_listener sync_callback_listener = {
	.done = sync_handle_done,
};

static void sync_handle_done
(
	void *data,
	struct wl_callback *wl_callback,
	uint32_t other_data
)
{
	static int sync = 0;
	if (debug_log)
		fprintf(stderr, "[Sync callback: %d]\n", sync);

wl_callback_destroy(wl_callback);
	sync_callback = NULL;

if ( sync == 0 )
	{
		/* First sync: The registry finished advertising globals.
		 * Now we can check whether we have everything we need.
		 */
		if ( zwlr_toplevel_manager != NULL )
			used_protocol = ZWLR_FOREIGN_TOPLEVEL;
		if ( ext_toplevel_list != NULL )
			used_protocol = EXT_FOREIGN_TOPLEVEL;
		if ( used_protocol == NONE )
		{
			const char *err_message =
				"ERROR: Wayland server supports none of the protocol extensions required for getting toplevel information:\n"
				"    -> zwlr-foreign-toplevel-management-unstable-v1, version 3 or higher\n"
				"    -> ext-foreign-toplevel-list-v1, version 1 or higher\n"
				"\n";
			fputs(err_message, stderr);
			ret = EXIT_FAILURE;
			loop = false;
			return;
		}
		update_capabilities();

sync++;
		sync_callback = wl_display_sync(wl_display);
		wl_callback_add_listener(sync_callback, &sync_callback_listener, NULL);

// TODO if there are extension protocol for ext_foreign_toplevel_list
		//      to get extra information, we may need one additional sync.
		//      So check if any of those are bound and then add one step
		//      if necessary.
	}
	else if ( mode == LIST )
	{
		/* Second sync: Now we have received all toplevel handles and
		 * their events. Time to leave the main loop, print all data and
		 * exit.
		 */
		loop = false;
	}
}

static void dump_and_free_data (void)
{
	assert(mode == LIST);
	out_start();
	struct Toplevel *t, *tmp;
	wl_list_for_each_reverse_safe(t, tmp, &toplevels, link)
	{
		out_write_toplevel(t);
		toplevel_destroy(t);
	}
	out_finish();
}

static void free_data (void)
{
	/* If we are in WATCH mode, destroying a toplevel will print a message
	 * to the user. However, in this case that message would be wrong,
	 * because the toplevel isn't closed, we just destroy our internal
	 * representation of it. So set mode to LIST for cleanup.
	 */
	mode = LIST;

struct Toplevel *t, *tmp;
	wl_list_for_each_safe(t, tmp, &toplevels, link)
		toplevel_destroy(t);
}

static void handle_interrupt (int signum)
{
	fputs("Killed.\n", stderr);
	loop = false;

/* In WATCH mode, Ctrl-C is the expected way to exit lswt, so don't
	 * set the return value to EXIT_FAILURE. However in LIST mode we
	 * generally don't expect SIGINT, so we probably encountered an error
	 * and should set the return value accordingly.
	 */
	if ( mode == LIST )
		ret = EXIT_FAILURE;

longjmp(skip_main_loop, 1);
}

/**
 * Intercept error signals (like SIGSEGV and SIGFPE) so that we can try to
 * print a fancy error message and a backtracke before letting the system kill us.
 */
static void handle_error (int signum)
{
	const char *msg =
		"\n"
		"┌──────────────────────────────────────────┐\n"
		"│                                          │\n"
		"│             lswt has crashed.            │\n"
		"│                                          │\n"
		"│   This is most likely a bug, so please   │\n"
		"│     report this to the mailing list.     │\n"
		"│                                          │\n"
		"│  ~leon_plickat/public-inbox@lists.sr.ht  │\n"
		"│                                          │\n"
		"└──────────────────────────────────────────┘\n"
		"\n";
	fputs(msg, stderr);

/* Set up the default handlers to deal with the rest. We do this before
	 * attempting to get a backtrace, because sometimes that could also
	 * cause a SEGFAULT and we don't want a funny signal loop to happen.
	 */
	signal(signum, SIG_DFL);

#ifdef __linux__
#ifdef __GLIBC__
	fputs("Attempting to get backtrace:\n", stderr);
	void *buffer[255];
	const int calls = backtrace(buffer, sizeof(buffer) / sizeof(void *));
	backtrace_symbols_fd(buffer, calls, fileno(stderr));
	fputs("\n", stderr);
#endif
#endif

/* Easiest way of calling the default signal handler. */
	kill(getpid(), signum);
}

int main(int argc, char *argv[])
{
	signal(SIGSEGV, handle_error);
	signal(SIGFPE, handle_error);
	signal(SIGINT, handle_interrupt);

if ( argc > 0 ) for (int i = 1; i < argc; i++)
	{
		if ( strcmp(argv[i], "-j") == 0 || strcmp(argv[i], "--json") == 0 )
		{
			if ( output_format != NORMAL )
			{
				fputs("ERROR: Output format may only be specified once.", stderr);
				ret = EXIT_FAILURE;
				goto cleanup;
			}
			output_format = JSON;
		}
		else if ( strcmp(argv[i], "-c") == 0 || strcmp(argv[i], "--custom") == 0 )
		{
			if ( output_format != NORMAL )
			{
				fputs("ERROR: Output format may only be specified once.", stderr);
				ret = EXIT_FAILURE;
				goto cleanup;
			}

if ( argc == i + 1 )
			{
				fprintf(stderr, "ERROR: Flag '%s' requires a parameter.\n", argv[i]);
				ret = EXIT_FAILURE;
				goto cleanup;
			}

if (!out_check_custom_format(argv[i+1]))
			{
				ret = EXIT_FAILURE;
				goto cleanup;
			}

output_format = CUSTOM;
			custom_output_format = strdup(argv[i+1]);

i++;
		}
		else if ( strcmp(argv[i], "--debug") == 0 )
			debug_log = true;
		else if ( strcmp(argv[i], "-w") == 0 || strcmp(argv[i], "--watch") == 0 )
			mode = WATCH;
		else if ( strcmp(argv[i], "-v") == 0 || strcmp(argv[i], "--version") == 0 )
		{
			fputs("lswt version " VERSION "\n", stderr);
			ret = EXIT_SUCCESS;
			goto cleanup;
		}
		else if ( strcmp(argv[i], "-h") == 0 || strcmp(argv[i], "--help") == 0 )
		{
			fputs(usage, stderr);
			ret = EXIT_SUCCESS;
			goto cleanup;
		}
		else
		{
			fprintf(stderr, "ERROR: Unknown option: %s\n", argv[i]);
			fputs(usage, stderr);
			ret = EXIT_FAILURE;
			goto cleanup;
		}
	}

if ( mode == WATCH && output_format != NORMAL )
	{
		fputs("ERROR: Alternative output formats are not supported in watch mode.\n", stderr);
		ret = EXIT_FAILURE;
		goto cleanup;
	}

/* We query the display name here instead of letting wl_display_connect()
	 * figure it out itself, because libwayland (for legacy reasons) falls
	 * back to using "wayland-0" when $WAYLAND_DISPLAY is not set, which is
	 * generally not desirable.
	 */
	const char *display_name = getenv("WAYLAND_DISPLAY");
	if ( display_name == NULL )
	{
		fputs("ERROR: WAYLAND_DISPLAY is not set.\n", stderr);
		ret = EXIT_FAILURE;
		goto cleanup;
	}

if (debug_log)
		fprintf(stderr, "[Trying to connect to display: '%s']\n", display_name);

/* Behold: If this succeeds, we may no longer goto cleanup, because
	 * Wayland magic happens, which can cause Toplevels to be allocated.
	 */
	wl_display = wl_display_connect(display_name);
	if ( wl_display == NULL )
	{
		fputs("ERROR: Can not connect to wayland display.\n", stderr);
		ret = EXIT_FAILURE;
		goto cleanup;
	}

wl_list_init(&toplevels);
	wl_registry = wl_display_get_registry(wl_display);
	wl_registry_add_listener(wl_registry, &registry_listener, NULL);

sync_callback = wl_display_sync(wl_display);
	wl_callback_add_listener(sync_callback, &sync_callback_listener, NULL);

if (debug_log)
		fputs("[Entering main loop.]\n", stderr);
	if ( setjmp(skip_main_loop) == 0 )
		while ( loop && wl_display_dispatch(wl_display) > 0 );

/* If nothing went wrong in the main loop we can print and free all data,
	 * otherwise just free it.
	 */
	if ( ret == EXIT_SUCCESS && mode == LIST )
		dump_and_free_data();
	else
		free_data();

if (debug_log)
		fputs("[Cleaning up Wayland interfaces.]\n", stderr);
	if ( sync_callback != NULL )
		wl_callback_destroy(sync_callback);
	if ( zwlr_toplevel_manager != NULL )
		zwlr_foreign_toplevel_manager_v1_destroy(zwlr_toplevel_manager);
	if ( ext_toplevel_list != NULL )
		ext_foreign_toplevel_list_v1_destroy(ext_toplevel_list);
	if ( wl_registry != NULL )
		wl_registry_destroy(wl_registry);
	wl_display_disconnect(wl_display);

cleanup:
	if ( custom_output_format != NULL )
		free(custom_output_format);

return ret;
}
07070100000008000081A400000000000000000000000166474DD100002D12000000000000000000000000000000000000003B00000000lswt-2.0.0/wlr-foreign-toplevel-management-unstable-v1.xml<?xml version="1.0" encoding="UTF-8"?>
<protocol name="wlr_foreign_toplevel_management_unstable_v1">
  <copyright>
    Copyright © 2018 Ilia Bozhinov

<interface name="zwlr_foreign_toplevel_manager_v1" version="3">
    <description summary="list and control opened apps">
      The purpose of this protocol is to enable the creation of taskbars
      and docks by providing them with a list of opened applications and
      letting them request certain actions on them, like maximizing, etc.

After a client binds the zwlr_foreign_toplevel_manager_v1, each opened
      toplevel window will be sent via the toplevel event
    </description>

<event name="toplevel">
      <description summary="a toplevel has been created">
        This event is emitted whenever a new toplevel window is created. It
        is emitted for all toplevels, regardless of the app that has created
        them.

All initial details of the toplevel(title, app_id, states, etc.) will
        be sent immediately after this event via the corresponding events in
        zwlr_foreign_toplevel_handle_v1.
      </description>
      <arg name="toplevel" type="new_id" interface="zwlr_foreign_toplevel_handle_v1"/>
    </event>

<request name="stop">
      <description summary="stop sending events">
        Indicates the client no longer wishes to receive events for new toplevels.
        However the compositor may emit further toplevel_created events, until
        the finished event is emitted.

The client must not send any more requests after this one.
      </description>
    </request>

<event name="finished">
      <description summary="the compositor has finished with the toplevel manager">
        This event indicates that the compositor is done sending events to the
        zwlr_foreign_toplevel_manager_v1. The server will destroy the object
        immediately after sending this request, so it will become invalid and
        the client should free any resources associated with it.
      </description>
    </event>
  </interface>

<interface name="zwlr_foreign_toplevel_handle_v1" version="3">
    <description summary="an opened toplevel">
      A zwlr_foreign_toplevel_handle_v1 object represents an opened toplevel
      window. Each app may have multiple opened toplevels.

Each toplevel has a list of outputs it is visible on, conveyed to the
      client with the output_enter and output_leave events.
    </description>

<event name="title">
      <description summary="title change">
        This event is emitted whenever the title of the toplevel changes.
      </description>
      <arg name="title" type="string"/>
    </event>

<event name="app_id">
      <description summary="app-id change">
        This event is emitted whenever the app-id of the toplevel changes.
      </description>
      <arg name="app_id" type="string"/>
    </event>

<event name="output_enter">
      <description summary="toplevel entered an output">
        This event is emitted whenever the toplevel becomes visible on
        the given output. A toplevel may be visible on multiple outputs.
      </description>
      <arg name="output" type="object" interface="wl_output"/>
    </event>

<event name="output_leave">
      <description summary="toplevel left an output">
        This event is emitted whenever the toplevel stops being visible on
        the given output. It is guaranteed that an entered-output event
        with the same output has been emitted before this event.
      </description>
      <arg name="output" type="object" interface="wl_output"/>
    </event>

<request name="set_maximized">
      <description summary="requests that the toplevel be maximized">
        Requests that the toplevel be maximized. If the maximized state actually
        changes, this will be indicated by the state event.
      </description>
    </request>

<request name="unset_maximized">
      <description summary="requests that the toplevel be unmaximized">
        Requests that the toplevel be unmaximized. If the maximized state actually
        changes, this will be indicated by the state event.
      </description>
    </request>

<request name="set_minimized">
      <description summary="requests that the toplevel be minimized">
        Requests that the toplevel be minimized. If the minimized state actually
        changes, this will be indicated by the state event.
      </description>
    </request>

<request name="unset_minimized">
      <description summary="requests that the toplevel be unminimized">
        Requests that the toplevel be unminimized. If the minimized state actually
        changes, this will be indicated by the state event.
      </description>
    </request>

<request name="activate">
      <description summary="activate the toplevel">
        Request that this toplevel be activated on the given seat.
        There is no guarantee the toplevel will be actually activated.
      </description>
      <arg name="seat" type="object" interface="wl_seat"/>
    </request>

<enum name="state">
      <description summary="types of states on the toplevel">
        The different states that a toplevel can have. These have the same meaning
        as the states with the same names defined in xdg-toplevel
      </description>

<event name="state">
      <description summary="the toplevel state changed">
        This event is emitted immediately after the zlw_foreign_toplevel_handle_v1
        is created and each time the toplevel state changes, either because of a
        compositor action or because of a request in this protocol.
      </description>

<event name="done">
      <description summary="all information about the toplevel has been sent">
        This event is sent after all changes in the toplevel state have been
        sent.

This allows changes to the zwlr_foreign_toplevel_handle_v1 properties
        to be seen as atomic, even if they happen via multiple events.
      </description>
    </event>

<request name="close">
      <description summary="request that the toplevel be closed">
        Send a request to the toplevel to close itself. The compositor would
        typically use a shell-specific method to carry out this request, for
        example by sending the xdg_toplevel.close event. However, this gives
        no guarantees the toplevel will actually be destroyed. If and when
        this happens, the zwlr_foreign_toplevel_handle_v1.closed event will
        be emitted.
      </description>
    </request>

<request name="set_rectangle">
      <description summary="the rectangle which represents the toplevel">
        The rectangle of the surface specified in this request corresponds to
        the place where the app using this protocol represents the given toplevel.
        It can be used by the compositor as a hint for some operations, e.g
        minimizing. The client is however not required to set this, in which
        case the compositor is free to decide some default value.

If the client specifies more than one rectangle, only the last one is
        considered.

The dimensions are given in surface-local coordinates.
        Setting width=height=0 removes the already-set rectangle.
      </description>

<event name="closed">
      <description summary="this toplevel has been destroyed">
        This event means the toplevel has been destroyed. It is guaranteed there
        won't be any more events for this zwlr_foreign_toplevel_handle_v1. The
        toplevel itself becomes inert so any requests will be ignored except the
        destroy request.
      </description>
    </event>

<request name="destroy" type="destructor">
      <description summary="destroy the zwlr_foreign_toplevel_handle_v1 object">
        Destroys the zwlr_foreign_toplevel_handle_v1 object.

This request should be called either when the client does not want to
        use the toplevel anymore or after the closed event to finalize the
        destruction of the object.
      </description>
    </request>

<request name="set_fullscreen" since="2">
      <description summary="request that the toplevel be fullscreened">
        Requests that the toplevel be fullscreened on the given output. If the
        fullscreen state and/or the outputs the toplevel is visible on actually
        change, this will be indicated by the state and output_enter/leave
        events.

The output parameter is only a hint to the compositor. Also, if output
        is NULL, the compositor should decide which output the toplevel will be
        fullscreened on, if at all.
      </description>
      <arg name="output" type="object" interface="wl_output" allow-null="true"/>
    </request>

<request name="unset_fullscreen" since="2">
      <description summary="request that the toplevel be unfullscreened">
        Requests that the toplevel be unfullscreened. If the fullscreen state
        actually changes, this will be indicated by the state event.
      </description>
    </request>

<event name="parent" since="3">
      <description summary="parent change">
        This event is emitted whenever the parent of the toplevel changes.

No event is emitted when the parent handle is destroyed by the client.
      </description>
      <arg name="parent" type="object" interface="zwlr_foreign_toplevel_handle_v1" allow-null="true"/>
    </event>
  </interface>
</protocol>
07070100000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000B00000000TRAILER!!!188 blocks

Places

File lswt-2.0.0.obscpio of Package lswt

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