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Revision 1.16 by root, Tue Jan 3 01:41:06 2006 UTC vs.
Revision 1.214 by root, Wed Jun 6 15:26:32 2012 UTC

		1	=encoding utf8
		2
1	=head1 NAME	3	=head1 NAME
2		4
3	@@RXVT_NAME@@perl - rxvt-unicode's embedded perl interpreter	5	@@RXVT_NAME@@perl - rxvt-unicode's embedded perl interpreter
4		6
5	=head1 SYNOPSIS	7	=head1 SYNOPSIS
…		…
15		17
16	@@RXVT_NAME@@ --perl-lib $HOME -pe grab_test	18	@@RXVT_NAME@@ --perl-lib $HOME -pe grab_test
17		19
18	=head1 DESCRIPTION	20	=head1 DESCRIPTION
19		21
20	Everytime a terminal object gets created, scripts specified via the	22	Every time a terminal object gets created, extension scripts specified via
21	C<perl> resource are loaded and associated with it.	23	the C<perl> resource are loaded and associated with it.
22		24
23	Scripts are compiled in a 'use strict' and 'use utf8' environment, and	25	Scripts are compiled in a 'use strict' and 'use utf8' environment, and
24	thus must be encoded as UTF-8.	26	thus must be encoded as UTF-8.
25		27
26	Each script will only ever be loaded once, even in @@RXVT_NAME@@d, where	28	Each script will only ever be loaded once, even in @@RXVT_NAME@@d, where
27	scripts will be shared (but not enabled) for all terminals.	29	scripts will be shared (but not enabled) for all terminals.
28		30
		31	You can disable the embedded perl interpreter by setting both "perl-ext"
		32	and "perl-ext-common" resources to the empty string.
		33
29	=head1 PACKAGED EXTENSIONS	34	=head1 PREPACKAGED EXTENSIONS
30		35
31	This section describes the extensiosn delivered with this version. You can	36	This section describes the extensions delivered with this release. You can
32	find them in F<@@RXVT_LIBDIR@@/urxvt/perl/>.	37	find them in F<@@RXVT_LIBDIR@@/urxvt/perl/>.
33		38
34	You can activate them like this:	39	You can activate them like this:
35		40
36	@@RXVT_NAME@@ -pe <extensionname>	41	@@RXVT_NAME@@ -pe <extensionname>
37		42
		43	Or by adding them to the resource for extensions loaded by default:
		44
		45	URxvt.perl-ext-common: default,selection-autotransform
		46
38	=over 4	47	=over 4
39		48
40	=item selection	49	=item selection (enabled by default)
41		50
42	Miscellaneous selection modifications.	51	(More) intelligent selection. This extension tries to be more intelligent
		52	when the user extends selections (double-click and further clicks). Right
		53	now, it tries to select words, urls and complete shell-quoted
		54	arguments, which is very convenient, too, if your F<ls> supports
		55	C<--quoting-style=shell>.
		56
		57	A double-click usually selects the word under the cursor, further clicks
		58	will enlarge the selection.
		59
		60	The selection works by trying to match a number of regexes and displaying
		61	them in increasing order of length. You can add your own regexes by
		62	specifying resources of the form:
		63
		64	URxvt.selection.pattern-0: perl-regex
		65	URxvt.selection.pattern-1: perl-regex
		66	...
		67
		68	The index number (0, 1...) must not have any holes, and each regex must
		69	contain at least one pair of capturing parentheses, which will be used for
		70	the match. For example, the following adds a regex that matches everything
		71	between two vertical bars:
		72
		73	URxvt.selection.pattern-0: \\|([^|]+)\\|
		74
		75	Another example: Programs I use often output "absolute path: " at the
		76	beginning of a line when they process multiple files. The following
		77	pattern matches the filename (note, there is a single space at the very
		78	end):
		79
		80	URxvt.selection.pattern-0: ^(/[^:]+):\
		81
		82	You can look at the source of the selection extension to see more
		83	interesting uses, such as parsing a line from beginning to end.
		84
		85	This extension also offers following bindable keyboard commands:
43		86
44	=over 4	87	=over 4
45		88
46	=item rot13	89	=item rot13
47		90
…		…
49		92
50	URxvt.keysym.C-M-r: perl:selection:rot13	93	URxvt.keysym.C-M-r: perl:selection:rot13
51		94
52	=back	95	=back
53		96
		97	=item option-popup (enabled by default)
		98
		99	Binds a popup menu to Ctrl-Button2 that lets you toggle (some) options at
		100	runtime.
		101
		102	Other extensions can extend this popup menu by pushing a code reference
		103	onto C<@{ $term->{option_popup_hook} }>, which gets called whenever the
		104	popup is being displayed.
		105
		106	Its sole argument is the popup menu, which can be modified. It should
		107	either return nothing or a string, the initial boolean value and a code
		108	reference. The string will be used as button text and the code reference
		109	will be called when the toggle changes, with the new boolean value as
		110	first argument.
		111
		112	The following will add an entry C<myoption> that changes
		113	C<< $self->{myoption} >>:
		114
		115	push @{ $self->{term}{option_popup_hook} }, sub {
		116	("my option" => $myoption, sub { $self->{myoption} = $_[0] })
		117	};
		118
		119	=item selection-popup (enabled by default)
		120
		121	Binds a popup menu to Ctrl-Button3 that lets you convert the selection
		122	text into various other formats/action (such as uri unescaping, perl
		123	evaluation, web-browser starting etc.), depending on content.
		124
		125	Other extensions can extend this popup menu by pushing a code reference
		126	onto C<@{ $term->{selection_popup_hook} }>, which gets called whenever the
		127	popup is being displayed.
		128
		129	Its sole argument is the popup menu, which can be modified. The selection
		130	is in C<$_>, which can be used to decide whether to add something or not.
		131	It should either return nothing or a string and a code reference. The
		132	string will be used as button text and the code reference will be called
		133	when the button gets activated and should transform C<$_>.
		134
		135	The following will add an entry C<a to b> that transforms all C<a>s in
		136	the selection to C<b>s, but only if the selection currently contains any
		137	C<a>s:
		138
		139	push @{ $self->{term}{selection_popup_hook} }, sub {
		140	/a/ ? ("a to b" => sub { s/a/b/g }
		141	: ()
		142	};
		143
		144	=item searchable-scrollback<hotkey> (enabled by default)
		145
		146	Adds regex search functionality to the scrollback buffer, triggered
		147	by a hotkey (default: C<M-s>). While in search mode, normal terminal
		148	input/output is suspended and a regex is displayed at the bottom of the
		149	screen.
		150
		151	Inputting characters appends them to the regex and continues incremental
		152	search. C<BackSpace> removes a character from the regex, C<Up> and C<Down>
		153	search upwards/downwards in the scrollback buffer, C<End> jumps to the
		154	bottom. C<Escape> leaves search mode and returns to the point where search
		155	was started, while C<Enter> or C<Return> stay at the current position and
		156	additionally stores the first match in the current line into the primary
		157	selection if the C<Shift> modifier is active.
		158
		159	The regex defaults to "(?i)", resulting in a case-insensitive search. To
		160	get a case-sensitive search you can delete this prefix using C<BackSpace>
		161	or simply use an uppercase character which removes the "(?i)" prefix.
		162
		163	See L<perlre> for more info about perl regular expression syntax.
		164
		165	=item readline (enabled by default)
		166
		167	A support package that tries to make editing with readline easier. At
		168	the moment, it reacts to clicking shift-left mouse button by trying to
		169	move the text cursor to this position. It does so by generating as many
		170	cursor-left or cursor-right keypresses as required (this only works
		171	for programs that correctly support wide characters).
		172
		173	To avoid too many false positives, this is only done when:
		174
		175	=over 4
		176
		177	=item - the tty is in ICANON state.
		178
		179	=item - the text cursor is visible.
		180
		181	=item - the primary screen is currently being displayed.
		182
		183	=item - the mouse is on the same (multi-row-) line as the text cursor.
		184
		185	=back
		186
		187	The normal selection mechanism isn't disabled, so quick successive clicks
		188	might interfere with selection creation in harmless ways.
		189
		190	=item selection-autotransform
		191
		192	This selection allows you to do automatic transforms on a selection
		193	whenever a selection is made.
		194
		195	It works by specifying perl snippets (most useful is a single C<s///>
		196	operator) that modify C<$_> as resources:
		197
		198	URxvt.selection-autotransform.0: transform
		199	URxvt.selection-autotransform.1: transform
		200	...
		201
		202	For example, the following will transform selections of the form
		203	C<filename:number>, often seen in compiler messages, into C<vi +$filename
		204	$word>:
		205
		206	URxvt.selection-autotransform.0: s/^([^:[:space:]]+):(\\d+):?$/vi +$2 \\Q$1\\E\\x0d/
		207
		208	And this example matches the same,but replaces it with vi-commands you can
		209	paste directly into your (vi :) editor:
		210
		211	URxvt.selection-autotransform.0: s/^([^:[:space:]]+(\\d+):?$/:e \\Q$1\\E\\x0d:$2\\x0d/
		212
		213	Of course, this can be modified to suit your needs and your editor :)
		214
		215	To expand the example above to typical perl error messages ("XXX at
		216	FILENAME line YYY."), you need a slightly more elaborate solution:
		217
		218	URxvt.selection.pattern-0: ( at .*? line \\d+[,.])
		219	URxvt.selection-autotransform.0: s/^ at (.*?) line (\\d+)[,.]$/:e \\Q$1\E\\x0d:$2\\x0d/
		220
		221	The first line tells the selection code to treat the unchanging part of
		222	every error message as a selection pattern, and the second line transforms
		223	the message into vi commands to load the file.
		224
		225	=item tabbed
		226
		227	This transforms the terminal into a tabbar with additional terminals, that
		228	is, it implements what is commonly referred to as "tabbed terminal". The topmost line
		229	displays a "[NEW]" button, which, when clicked, will add a new tab, followed by one
		230	button per tab.
		231
		232	Clicking a button will activate that tab. Pressing B<Shift-Left> and
		233	B<Shift-Right> will switch to the tab left or right of the current one,
		234	while B<Shift-Down> creates a new tab.
		235
		236	The tabbar itself can be configured similarly to a normal terminal, but
		237	with a resource class of C<URxvt.tabbed>. In addition, it supports the
		238	following four resources (shown with defaults):
		239
		240	URxvt.tabbed.tabbar-fg: <colour-index, default 3>
		241	URxvt.tabbed.tabbar-bg: <colour-index, default 0>
		242	URxvt.tabbed.tab-fg: <colour-index, default 0>
		243	URxvt.tabbed.tab-bg: <colour-index, default 1>
		244
		245	See I<COLOR AND GRAPHICS> in the @@RXVT_NAME@@(1) manpage for valid
		246	indices.
		247
		248	=item matcher
		249
		250	Uses per-line display filtering (C<on_line_update>) to underline text
		251	matching a certain pattern and make it clickable. When clicked with the
		252	mouse button specified in the C<matcher.button> resource (default 2, or
		253	middle), the program specified in the C<matcher.launcher> resource
		254	(default, the C<urlLauncher> resource, C<sensible-browser>) will be started
		255	with the matched text as first argument. The default configuration is
		256	suitable for matching URLs and launching a web browser, like the
		257	former "mark-urls" extension.
		258
		259	The default pattern to match URLs can be overridden with the
		260	C<matcher.pattern.0> resource, and additional patterns can be specified
		261	with numbered patterns, in a manner similar to the "selection" extension.
		262	The launcher can also be overridden on a per-pattern basis.
		263
		264	It is possible to activate the most recently seen match or a list of matches
		265	from the keyboard. Simply bind a keysym to "perl:matcher:last" or
		266	"perl:matcher:list" as seen in the example below.
		267
		268	Example configuration:
		269
		270	URxvt.perl-ext: default,matcher
		271	URxvt.urlLauncher: sensible-browser
		272	URxvt.keysym.C-Delete: perl:matcher:last
		273	URxvt.keysym.M-Delete: perl:matcher:list
		274	URxvt.matcher.button: 1
		275	URxvt.matcher.pattern.1: \\bwww\\.[\\w-]+\\.[\\w./?&@#-]*[\\w/-]
		276	URxvt.matcher.pattern.2: \\B(/\\S+?):(\\d+)(?=:|$)
		277	URxvt.matcher.launcher.2: gvim +$2 $1
		278
		279	=item xim-onthespot
		280
		281	This (experimental) perl extension implements OnTheSpot editing. It does
		282	not work perfectly, and some input methods don't seem to work well with
		283	OnTheSpot editing in general, but it seems to work at least for SCIM and
		284	kinput2.
		285
		286	You enable it by specifying this extension and a preedit style of
		287	C<OnTheSpot>, i.e.:
		288
		289	@@RXVT_NAME@@ -pt OnTheSpot -pe xim-onthespot
		290
		291	=item kuake<hotkey>
		292
		293	A very primitive quake-console-like extension. It was inspired by a
		294	description of how the programs C<kuake> and C<yakuake> work: Whenever the
		295	user presses a global accelerator key (by default C<F10>), the terminal
		296	will show or hide itself. Another press of the accelerator key will hide
		297	or show it again.
		298
		299	Initially, the window will not be shown when using this extension.
		300
		301	This is useful if you need a single terminal that is not using any desktop
		302	space most of the time but is quickly available at the press of a key.
		303
		304	The accelerator key is grabbed regardless of any modifiers, so this
		305	extension will actually grab a physical key just for this function.
		306
		307	If you want a quake-like animation, tell your window manager to do so
		308	(fvwm can do it).
		309
		310	=item overlay-osc
		311
		312	This extension implements some OSC commands to display timed popups on the
		313	screen - useful for status displays from within scripts. You have to read
		314	the sources for more info.
		315
		316	=item block-graphics-to-ascii
		317
		318	A not very useful example of filtering all text output to the terminal
		319	by replacing all line-drawing characters (U+2500 .. U+259F) by a
		320	similar-looking ascii character.
		321
54	=item digital-clock	322	=item digital-clock
		323
		324	Displays a digital clock using the built-in overlay.
		325
		326	=item remote-clipboard
		327
		328	Somewhat of a misnomer, this extension adds two menu entries to the
		329	selection popup that allows one to run external commands to store the
		330	selection somewhere and fetch it again.
		331
		332	We use it to implement a "distributed selection mechanism", which just
		333	means that one command uploads the file to a remote server, and another
		334	reads it.
		335
		336	The commands can be set using the C<URxvt.remote-selection.store> and
		337	C<URxvt.remote-selection.fetch> resources. The first should read the
		338	selection to store from STDIN (always in UTF-8), the second should provide
		339	the selection data on STDOUT (also in UTF-8).
		340
		341	The defaults (which are likely useless to you) use rsh and cat:
		342
		343	URxvt.remote-selection.store: rsh ruth 'cat >/tmp/distributed-selection'
		344	URxvt.remote-selection.fetch: rsh ruth 'cat /tmp/distributed-selection'
		345
		346	=item selection-pastebin
		347
		348	This is a little rarely useful extension that uploads the selection as
		349	textfile to a remote site (or does other things). (The implementation is
		350	not currently secure for use in a multiuser environment as it writes to
		351	F</tmp> directly.).
		352
		353	It listens to the C<selection-pastebin:remote-pastebin> keyboard command,
		354	i.e.
		355
		356	URxvt.keysym.C-M-e: perl:selection-pastebin:remote-pastebin
		357
		358	Pressing this combination runs a command with C<%> replaced by the name of
		359	the textfile. This command can be set via a resource:
		360
		361	URxvt.selection-pastebin.cmd: rsync -apP % ruth:/var/www/www.ta-sa.org/files/txt/.
		362
		363	And the default is likely not useful to anybody but the few people around
		364	here :)
		365
		366	The name of the textfile is the hex encoded md5 sum of the selection, so
		367	the same content should lead to the same filename.
		368
		369	After a successful upload the selection will be replaced by the text given
		370	in the C<selection-pastebin-url> resource (again, the % is the placeholder
		371	for the filename):
		372
		373	URxvt.selection-pastebin.url: http://www.ta-sa.org/files/txt/%
		374
		375	I<Note to xrdb users:> xrdb uses the C preprocessor, which might interpret
		376	the double C</> characters as comment start. Use C<\057\057> instead,
		377	which works regardless of whether xrdb is used to parse the resource file
		378	or not.
		379
		380	=item macosx-clipboard and macosx-clipboard-native
		381
		382	These two modules implement an extended clipboard for Mac OS X. They are
		383	used like this:
		384
		385	URxvt.perl-ext-common: default,macosx-clipboard
		386	URxvt.keysym.M-c: perl:macosx-clipboard:copy
		387	URxvt.keysym.M-v: perl:macosx-clipboard:paste
		388
		389	The difference between them is that the native variant requires a
		390	perl from apple's devkit or so, and C<macosx-clipboard> requires the
		391	C<Mac::Pasteboard> module, works with other perls, has fewer bugs, is
		392	simpler etc. etc.
		393
		394	=item example-refresh-hooks
55		395
56	Displays a very simple digital clock in the upper right corner of the	396	Displays a very simple digital clock in the upper right corner of the
57	window. Illustrates overwriting the refresh callbacks to create your own	397	window. Illustrates overwriting the refresh callbacks to create your own
58	overlays or changes.	398	overlays or changes.
59		399
60	=item simple-overlay-clock	400	=item confirm-paste
61		401
62	Displays a digital clock using the built-in overlay (colorful, useless).	402	Displays a confirmation dialog when a paste containing at least a full
		403	line is detected.
		404
		405	=item bell-command
		406
		407	Runs the command specified by the C<URxvt.bell-command> resource when
		408	a bell event occurs. For example, the following pops up a notification
		409	bubble with the text "Beep, Beep" using notify-send:
		410
		411	URxvt.bell-command: notify-send "Beep, Beep"
63		412
64	=back	413	=back
		414
		415	=head1 API DOCUMENTATION
65		416
66	=head2 General API Considerations	417	=head2 General API Considerations
67		418
68	All objects (such as terminals, time watchers etc.) are typical	419	All objects (such as terminals, time watchers etc.) are typical
69	reference-to-hash objects. The hash can be used to store anything you	420	reference-to-hash objects. The hash can be used to store anything you
70	like. All members starting with an underscore (such as C<_ptr> or	421	like. All members starting with an underscore (such as C<_ptr> or
71	C<_hook>) are reserved for internal uses and must not be accessed or	422	C<_hook>) are reserved for internal uses and B<MUST NOT> be accessed or
72	modified).	423	modified).
73		424
74	When objects are destroyed on the C++ side, the perl object hashes are	425	When objects are destroyed on the C++ side, the perl object hashes are
75	emptied, so its best to store related objects such as time watchers and	426	emptied, so its best to store related objects such as time watchers and
76	the like inside the terminal object so they get destroyed as soon as the	427	the like inside the terminal object so they get destroyed as soon as the
77	terminal is destroyed.	428	terminal is destroyed.
78		429
		430	Argument names also often indicate the type of a parameter. Here are some
		431	hints on what they mean:
		432
		433	=over 4
		434
		435	=item $text
		436
		437	Rxvt-unicode's special way of encoding text, where one "unicode" character
		438	always represents one screen cell. See L<ROW_t> for a discussion of this format.
		439
		440	=item $string
		441
		442	A perl text string, with an emphasis on I<text>. It can store all unicode
		443	characters and is to be distinguished with text encoded in a specific
		444	encoding (often locale-specific) and binary data.
		445
		446	=item $octets
		447
		448	Either binary data or - more common - a text string encoded in a
		449	locale-specific way.
		450
		451	=item $keysym
		452
		453	an integer that is a valid X11 keysym code. You can convert a string
		454	into a keysym and viceversa by using C<XStringToKeysym> and
		455	C<XKeysymToString>.
		456
		457	=back
		458
		459	=head2 Extension Objects
		460
		461	Every perl extension is a perl class. A separate perl object is created
		462	for each terminal, and each terminal has its own set of extension objects,
		463	which are passed as the first parameter to hooks. So extensions can use
		464	their C<$self> object without having to think about clashes with other
		465	extensions or other terminals, with the exception of methods and members
		466	that begin with an underscore character C<_>: these are reserved for
		467	internal use.
		468
		469	Although it isn't a C<urxvt::term> object, you can call all methods of the
		470	C<urxvt::term> class on this object.
		471
		472	It has the following methods and data members:
		473
		474	=over 4
		475
		476	=item $urxvt_term = $self->{term}
		477
		478	Returns the C<urxvt::term> object associated with this instance of the
		479	extension. This member I<must not> be changed in any way.
		480
		481	=item $self->enable ($hook_name => $cb, [$hook_name => $cb..])
		482
		483	Dynamically enable the given hooks (named without the C<on_> prefix) for
		484	this extension, replacing any previous hook. This is useful when you want
		485	to overwrite time-critical hooks only temporarily.
		486
		487	=item $self->disable ($hook_name[, $hook_name..])
		488
		489	Dynamically disable the given hooks.
		490
		491	=back
		492
79	=head2 Hooks	493	=head2 Hooks
80		494
81	The following subroutines can be declared in loaded scripts, and will be called	495	The following subroutines can be declared in extension files, and will be
82	whenever the relevant event happens.	496	called whenever the relevant event happens.
83		497
84	All of them must return a boolean value. If it is true, then the event	498	The first argument passed to them is an extension object as described in
85	counts as being I<consumed>, and the invocation of other hooks is skipped,	499	the in the C<Extension Objects> section.
		500
		501	B<All> of these hooks must return a boolean value. If any of the called
		502	hooks returns true, then the event counts as being I<consumed>, and the
86	and the relevant action might not be carried out by the C++ code.	503	relevant action might not be carried out by the C++ code.
87		504
88	When in doubt, return a false value (preferably C<()>).	505	I<< When in doubt, return a false value (preferably C<()>). >>
89		506
90	=over 4	507	=over 4
91		508
92	=item on_init $term	509	=item on_init $term
93		510
94	Called after a new terminal object has been initialized, but before	511	Called after a new terminal object has been initialized, but before
95	windows are created or the command gets run.	512	windows are created or the command gets run. Most methods are unsafe to
		513	call or deliver senseless data, as terminal size and other characteristics
		514	have not yet been determined. You can safely query and change resources
		515	and options, though. For many purposes the C<on_start> hook is a better
		516	place.
		517
		518	=item on_start $term
		519
		520	Called at the very end of initialisation of a new terminal, just before
		521	trying to map (display) the toplevel and returning to the main loop.
		522
		523	=item on_destroy $term
		524
		525	Called whenever something tries to destroy terminal, when the terminal is
		526	still fully functional (not for long, though).
96		527
97	=item on_reset $term	528	=item on_reset $term
98		529
99	Called after the screen is "reset" for any reason, such as resizing or	530	Called after the screen is "reset" for any reason, such as resizing or
100	control sequences. Here is where you can react on changes to size-related	531	control sequences. Here is where you can react on changes to size-related
101	variables.	532	variables.
102		533
103	=item on_start $term	534	=item on_child_start $term, $pid
104		535
105	Called at the very end of initialisation of a new terminal, just before	536	Called just after the child process has been C<fork>ed.
106	returning to the mainloop.	537
		538	=item on_child_exit $term, $status
		539
		540	Called just after the child process has exited. C<$status> is the status
		541	from C<waitpid>.
107		542
108	=item on_sel_make $term, $eventtime	543	=item on_sel_make $term, $eventtime
109		544
110	Called whenever a selection has been made by the user, but before the	545	Called whenever a selection has been made by the user, but before the
111	selection text is copied, so changes to the beginning, end or type of the	546	selection text is copied, so changes to the beginning, end or type of the
…		…
118		553
119	Called whenever a selection has been copied, but before the selection is	554	Called whenever a selection has been copied, but before the selection is
120	requested from the server. The selection text can be queried and changed	555	requested from the server. The selection text can be queried and changed
121	by calling C<< $term->selection >>.	556	by calling C<< $term->selection >>.
122		557
123	Returning a true value aborts selection grabbing. It will still be hilighted.	558	Returning a true value aborts selection grabbing. It will still be highlighted.
124		559
125	=item on_focus_in $term	560	=item on_sel_extend $term
126		561
127	Called whenever the window gets the keyboard focus, before urxvt does	562	Called whenever the user tries to extend the selection (e.g. with a double
128	focus in processing.	563	click) and is either supposed to return false (normal operation), or
		564	should extend the selection itself and return true to suppress the built-in
		565	processing. This can happen multiple times, as long as the callback
		566	returns true, it will be called on every further click by the user and is
		567	supposed to enlarge the selection more and more, if possible.
129		568
130	=item on_focus_out $term	569	See the F<selection> example extension.
131
132	Called wheneever the window loses keyboard focus, before urxvt does focus
133	out processing.
134		570
135	=item on_view_change $term, $offset	571	=item on_view_change $term, $offset
136		572
137	Called whenever the view offset changes, i..e the user or program	573	Called whenever the view offset changes, i.e. the user or program
138	scrolls. Offset C<0> means display the normal terminal, positive values	574	scrolls. Offset C<0> means display the normal terminal, positive values
139	show this many lines of scrollback.	575	show this many lines of scrollback.
140		576
141	=item on_scroll_back $term, $lines, $saved	577	=item on_scroll_back $term, $lines, $saved
142		578
…		…
146		582
147	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,	583	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,
148	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total	584	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total
149	number of lines that will be in the scrollback buffer.	585	number of lines that will be in the scrollback buffer.
150		586
151	=item on_tty_activity $term *NYI*	587	=item on_osc_seq $term, $op, $args, $resp
152		588
153	Called whenever the program(s) running in the urxvt window send output.	589	Called on every OSC sequence and can be used to suppress it or modify its
		590	behaviour. The default should be to return an empty list. A true value
		591	suppresses execution of the request completely. Make sure you don't get
		592	confused by recursive invocations when you output an OSC sequence within
		593	this callback.
		594
		595	C<on_osc_seq_perl> should be used for new behaviour.
		596
		597	=item on_osc_seq_perl $term, $args, $resp
		598
		599	Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =
		600	operating system command) is processed. Cursor position and other state
		601	information is up-to-date when this happens. For interoperability, the
		602	string should start with the extension name (sans -osc) and a semicolon,
		603	to distinguish it from commands for other extensions, and this might be
		604	enforced in the future.
		605
		606	For example, C<overlay-osc> uses this:
		607
		608	sub on_osc_seq_perl {
		609	my ($self, $osc, $resp) = @_;
		610
		611	return unless $osc =~ s/^overlay;//;
		612
		613	... process remaining $osc string
		614	}
		615
		616	Be careful not ever to trust (in a security sense) the data you receive,
		617	as its source can not easily be controlled (e-mail content, messages from
		618	other users on the same system etc.).
		619
		620	For responses, C<$resp> contains the end-of-args separator used by the
		621	sender.
		622
		623	=item on_add_lines $term, $string
		624
		625	Called whenever text is about to be output, with the text as argument. You
		626	can filter/change and output the text yourself by returning a true value
		627	and calling C<< $term->scr_add_lines >> yourself. Please note that this
		628	might be very slow, however, as your hook is called for B<all> text being
		629	output.
		630
		631	=item on_tt_write $term, $octets
		632
		633	Called whenever some data is written to the tty/pty and can be used to
		634	suppress or filter tty input.
		635
		636	=item on_tt_paste $term, $octets
		637
		638	Called whenever text is about to be pasted, with the text as argument. You
		639	can filter/change and paste the text yourself by returning a true value
		640	and calling C<< $term->tt_paste >> yourself. C<$octets> is
		641	locale-encoded.
		642
		643	=item on_line_update $term, $row
		644
		645	Called whenever a line was updated or changed. Can be used to filter
		646	screen output (e.g. underline urls or other useless stuff). Only lines
		647	that are being shown will be filtered, and, due to performance reasons,
		648	not always immediately.
		649
		650	The row number is always the topmost row of the line if the line spans
		651	multiple rows.
		652
		653	Please note that, if you change the line, then the hook might get called
		654	later with the already-modified line (e.g. if unrelated parts change), so
		655	you cannot just toggle rendition bits, but only set them.
154		656
155	=item on_refresh_begin $term	657	=item on_refresh_begin $term
156		658
157	Called just before the screen gets redrawn. Can be used for overlay	659	Called just before the screen gets redrawn. Can be used for overlay or
158	or similar effects by modify terminal contents in refresh_begin, and	660	similar effects by modifying the terminal contents in refresh_begin, and
159	restoring them in refresh_end. The built-in overlay and selection display	661	restoring them in refresh_end. The built-in overlay and selection display
160	code is run after this hook, and takes precedence.	662	code is run after this hook, and takes precedence.
161		663
162	=item on_refresh_end $term	664	=item on_refresh_end $term
163		665
164	Called just after the screen gets redrawn. See C<on_refresh_begin>.	666	Called just after the screen gets redrawn. See C<on_refresh_begin>.
165		667
166	=item on_keyboard_command $term, $string	668	=item on_user_command $term, $string
167		669
168	Called whenever the user presses a key combination that has a	670	Called whenever a user-configured event is being activated (e.g. via
169	C<perl:string> action bound to it (see description of the B<keysym>	671	a C<perl:string> action bound to a key, see description of the B<keysym>
170	resource in the @@RXVT_NAME@@(1) manpage).	672	resource in the @@RXVT_NAME@@(1) manpage).
171		673
		674	The event is simply the action string. This interface is assumed to change
		675	slightly in the future.
		676
		677	=item on_register_command $term, $keysym, $modifiermask, $string
		678
		679	Called after parsing a keysym resource but before registering the
		680	associated binding. If this hook returns TRUE the binding is not
		681	registered. It can be used to modify a binding by calling
		682	C<register_command>.
		683
		684	=item on_resize_all_windows $term, $new_width, $new_height
		685
		686	Called just after the new window size has been calculated, but before
		687	windows are actually being resized or hints are being set. If this hook
		688	returns TRUE, setting of the window hints is being skipped.
		689
		690	=item on_x_event $term, $event
		691
		692	Called on every X event received on the vt window (and possibly other
		693	windows). Should only be used as a last resort. Most event structure
		694	members are not passed.
		695
		696	=item on_root_event $term, $event
		697
		698	Like C<on_x_event>, but is called for events on the root window.
		699
		700	=item on_focus_in $term
		701
		702	Called whenever the window gets the keyboard focus, before rxvt-unicode
		703	does focus in processing.
		704
		705	=item on_focus_out $term
		706
		707	Called whenever the window loses keyboard focus, before rxvt-unicode does
		708	focus out processing.
		709
		710	=item on_configure_notify $term, $event
		711
		712	=item on_property_notify $term, $event
		713
		714	=item on_key_press $term, $event, $keysym, $octets
		715
		716	=item on_key_release $term, $event, $keysym
		717
		718	=item on_button_press $term, $event
		719
		720	=item on_button_release $term, $event
		721
		722	=item on_motion_notify $term, $event
		723
		724	=item on_map_notify $term, $event
		725
		726	=item on_unmap_notify $term, $event
		727
		728	Called whenever the corresponding X event is received for the terminal. If
		729	the hook returns true, then the event will be ignored by rxvt-unicode.
		730
		731	The event is a hash with most values as named by Xlib (see the XEvent
		732	manpage), with the additional members C<row> and C<col>, which are the
		733	(real, not screen-based) row and column under the mouse cursor.
		734
		735	C<on_key_press> additionally receives the string rxvt-unicode would
		736	output, if any, in locale-specific encoding.
		737
		738	subwindow.
		739
		740	=item on_client_message $term, $event
		741
		742	=item on_wm_protocols $term, $event
		743
		744	=item on_wm_delete_window $term, $event
		745
		746	Called when various types of ClientMessage events are received (all with
		747	format=32, WM_PROTOCOLS or WM_PROTOCOLS:WM_DELETE_WINDOW).
		748
		749	=item on_bell $term
		750
		751	Called on receipt of a bell character.
		752
172	=back	753	=back
173		754
		755	=cut
		756
		757	package urxvt;
		758
		759	use utf8;
		760	use strict;
		761	use Carp ();
		762	use Scalar::Util ();
		763	use List::Util ();
		764
		765	our $VERSION = 1;
		766	our $TERM;
		767	our @TERM_INIT; # should go, prevents async I/O etc.
		768	our @TERM_EXT; # should go, prevents async I/O etc.
		769	our @HOOKNAME;
		770	our %HOOKTYPE = map +($HOOKNAME[$_] => $_), 0..$#HOOKNAME;
		771	our %OPTION;
		772
		773	our $LIBDIR;
		774	our $RESNAME;
		775	our $RESCLASS;
		776	our $RXVTNAME;
		777
		778	our $NOCHAR = chr 0xffff;
		779
		780	=head2 Variables in the C<urxvt> Package
		781
		782	=over 4
		783
		784	=item $urxvt::LIBDIR
		785
		786	The rxvt-unicode library directory, where, among other things, the perl
		787	modules and scripts are stored.
		788
		789	=item $urxvt::RESCLASS, $urxvt::RESCLASS
		790
		791	The resource class and name rxvt-unicode uses to look up X resources.
		792
		793	=item $urxvt::RXVTNAME
		794
		795	The basename of the installed binaries, usually C<urxvt>.
		796
		797	=item $urxvt::TERM
		798
		799	The current terminal. This variable stores the current C<urxvt::term>
		800	object, whenever a callback/hook is executing.
		801
		802	=item @urxvt::TERM_INIT
		803
		804	All code references in this array will be called as methods of the next newly
		805	created C<urxvt::term> object (during the C<on_init> phase). The array
		806	gets cleared before the code references that were in it are being executed,
		807	so references can push themselves onto it again if they so desire.
		808
		809	This complements to the perl-eval command line option, but gets executed
		810	first.
		811
		812	=item @urxvt::TERM_EXT
		813
		814	Works similar to C<@TERM_INIT>, but contains perl package/class names, which
		815	get registered as normal extensions after calling the hooks in C<@TERM_INIT>
		816	but before other extensions. Gets cleared just like C<@TERM_INIT>.
		817
		818	=back
		819
174	=head2 Functions in the C<urxvt> Package	820	=head2 Functions in the C<urxvt> Package
175		821
176	=over 4	822	=over 4
177		823
178	=item urxvt::fatal $errormessage	824	=item urxvt::fatal $errormessage
179		825
180	Fatally aborts execution with the given error message. Avoid at all	826	Fatally aborts execution with the given error message (which should
181	costs! The only time this is acceptable is when the terminal process	827	include a trailing newline). Avoid at all costs! The only time this
182	starts up.	828	is acceptable (and useful) is in the init hook, where it prevents the
		829	terminal from starting up.
183		830
184	=item urxvt::warn $string	831	=item urxvt::warn $string
185		832
186	Calls C<rxvt_warn> with the given string which should not include a	833	Calls C<rxvt_warn> with the given string which should include a trailing
187	newline. The module also overwrites the C<warn> builtin with a function	834	newline. The module also overwrites the C<warn> builtin with a function
188	that calls this function.	835	that calls this function.
189		836
190	Using this function has the advantage that its output ends up in the	837	Using this function has the advantage that its output ends up in the
191	correct place, e.g. on stderr of the connecting urxvtc client.	838	correct place, e.g. on stderr of the connecting urxvtc client.
192		839
		840	Messages have a size limit of 1023 bytes currently.
		841
		842	=item @terms = urxvt::termlist
		843
		844	Returns all urxvt::term objects that exist in this process, regardless of
		845	whether they are started, being destroyed etc., so be careful. Only term
		846	objects that have perl extensions attached will be returned (because there
		847	is no urxvt::term object associated with others).
		848
193	=item $time = urxvt::NOW	849	=item $time = urxvt::NOW
194		850
195	Returns the "current time" (as per the event loop).	851	Returns the "current time" (as per the event loop).
196		852
		853	=item urxvt::CurrentTime
		854
		855	=item urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,
		856	Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,
		857	Button4Mask, Button5Mask, AnyModifier
		858
		859	=item urxvt::NoEventMask, KeyPressMask, KeyReleaseMask,
		860	ButtonPressMask, ButtonReleaseMask, EnterWindowMask, LeaveWindowMask,
		861	PointerMotionMask, PointerMotionHintMask, Button1MotionMask, Button2MotionMask,
		862	Button3MotionMask, Button4MotionMask, Button5MotionMask, ButtonMotionMask,
		863	KeymapStateMask, ExposureMask, VisibilityChangeMask, StructureNotifyMask,
		864	ResizeRedirectMask, SubstructureNotifyMask, SubstructureRedirectMask,
		865	FocusChangeMask, PropertyChangeMask, ColormapChangeMask, OwnerGrabButtonMask
		866
		867	=item urxvt::KeyPress, KeyRelease, ButtonPress, ButtonRelease, MotionNotify,
		868	EnterNotify, LeaveNotify, FocusIn, FocusOut, KeymapNotify, Expose,
		869	GraphicsExpose, NoExpose, VisibilityNotify, CreateNotify, DestroyNotify,
		870	UnmapNotify, MapNotify, MapRequest, ReparentNotify, ConfigureNotify,
		871	ConfigureRequest, GravityNotify, ResizeRequest, CirculateNotify,
		872	CirculateRequest, PropertyNotify, SelectionClear, SelectionRequest,
		873	SelectionNotify, ColormapNotify, ClientMessage, MappingNotify
		874
		875	Various constants for use in X calls and event processing.
		876
		877	=back
		878
		879	=head2 RENDITION
		880
		881	Rendition bitsets contain information about colour, font, font styles and
		882	similar information for each screen cell.
		883
		884	The following "macros" deal with changes in rendition sets. You should
		885	never just create a bitset, you should always modify an existing one,
		886	as they contain important information required for correct operation of
		887	rxvt-unicode.
		888
		889	=over 4
		890
		891	=item $rend = urxvt::DEFAULT_RSTYLE
		892
		893	Returns the default rendition, as used when the terminal is starting up or
		894	being reset. Useful as a base to start when creating renditions.
		895
		896	=item $rend = urxvt::OVERLAY_RSTYLE
		897
		898	Return the rendition mask used for overlays by default.
		899
		900	=item $rendbit = urxvt::RS_Bold, urxvt::RS_Italic, urxvt::RS_Blink,
		901	urxvt::RS_RVid, urxvt::RS_Uline
		902
		903	Return the bit that enabled bold, italic, blink, reverse-video and
		904	underline, respectively. To enable such a style, just logically OR it into
		905	the bitset.
		906
		907	=item $foreground = urxvt::GET_BASEFG $rend
		908
		909	=item $background = urxvt::GET_BASEBG $rend
		910
		911	Return the foreground/background colour index, respectively.
		912
		913	=item $rend = urxvt::SET_FGCOLOR $rend, $new_colour
		914
		915	=item $rend = urxvt::SET_BGCOLOR $rend, $new_colour
		916
		917	=item $rend = urxvt::SET_COLOR $rend, $new_fg, $new_bg
		918
		919	Replace the foreground/background colour in the rendition mask with the
		920	specified one.
		921
		922	=item $value = urxvt::GET_CUSTOM $rend
		923
		924	Return the "custom" value: Every rendition has 5 bits for use by
		925	extensions. They can be set and changed as you like and are initially
		926	zero.
		927
		928	=item $rend = urxvt::SET_CUSTOM $rend, $new_value
		929
		930	Change the custom value.
		931
		932	=back
		933
197	=cut	934	=cut
198		935
199	package urxvt;
200
201	use strict;
202
203	our $term;
204	our @HOOKNAME;
205	our $LIBDIR;
206
207	BEGIN {	936	BEGIN {
208	urxvt->bootstrap;
209
210	# overwrite perl's warn	937	# overwrite perl's warn
211	*CORE::GLOBAL::warn = sub {	938	*CORE::GLOBAL::warn = sub {
212	my $msg = join "", @_;	939	my $msg = join "", @_;
213	$msg .= "\n"	940	$msg .= "\n"
214	unless $msg =~ /\n$/;	941	unless $msg =~ /\n$/;
215	urxvt::warn ($msg);	942	urxvt::warn ($msg);
216	};	943	};
217	}	944	}
218		945
219	my @hook_count;	946	no warnings 'utf8';
		947
		948	sub parse_resource {
		949	my ($term, $name, $isarg, $longopt, $flag, $value) = @_;
		950
		951	$term->scan_meta;
		952
		953	my $r = $term->{meta}{resource};
		954	while (my ($pattern, $v) = each %$r) {
		955	$name =~ y/-/./ if $isarg;
		956
		957	if (
		958	$pattern =~ /\.$/
		959	? $pattern eq substr $name, 0, length $pattern
		960	: $pattern eq $name
		961	) {
		962	$name = "$urxvt::RESCLASS.$name";
		963
		964	push @TERM_EXT, $v->[0];
		965
		966	if ($v->[1] eq "boolean") {
		967	$term->put_option_db ($name, $flag ? "true" : "false");
		968	return 1;
		969	} else {
		970	$term->put_option_db ($name, $value);
		971	return 1 + 2;
		972	}
		973	}
		974	}
		975
		976	0
		977	}
		978
		979	sub usage {
		980	my ($term, $usage_type) = @_;
		981
		982	$term->scan_meta;
		983
		984	my $r = $term->{meta}{resource};
		985
		986	for my $pattern (sort keys %$r) {
		987	my ($ext, $type, $desc) = @{ $r->{$pattern} };
		988
		989	$desc .= " (-pe $ext)";
		990
		991	if ($usage_type == 1) {
		992	$pattern =~ y/./-/;
		993	$pattern =~ s/-$/-.../g;
		994
		995	if ($type eq "boolean") {
		996	urxvt::log sprintf " -%-30s %s\n", "/+$pattern", $desc;
		997	} else {
		998	urxvt::log sprintf " -%-30s %s\n", "$pattern $type", $desc;
		999	}
		1000	} else {
		1001	$pattern =~ s/\.$/.*/g;
		1002	urxvt::log sprintf " %-31s %s\n", "$pattern:", $type;
		1003	}
		1004	}
		1005	}
		1006
220	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};	1007	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};
221		1008
222	sub verbose {	1009	sub verbose {
223	my ($level, $msg) = @_;	1010	my ($level, $msg) = @_;
224	warn "$msg\n" if $level <= $verbosity;	1011	warn "$msg\n" if $level <= $verbosity;
225	}	1012	}
226		1013
227	# find on_xxx subs in the package and register them	1014	my %extension_pkg;
228	# as hooks
229	sub register_package($) {
230	my ($pkg) = @_;
231
232	for my $htype (0.. $#HOOKNAME) {
233	my $name = $HOOKNAME[$htype];
234
235	my $ref = $pkg->can ("on_" . lc $name)
236	or next;
237
238	$term->{_hook}[$htype]{$ref*1} = $ref;
239	$hook_count[$htype]++
240	or set_should_invoke $htype, 1;
241	}
242	}
243
244	my $script_pkg = "script0000";
245	my %script_pkg;
246		1015
247	# load a single script into its own package, once only	1016	# load a single script into its own package, once only
248	sub script_package($) {	1017	sub extension_package($) {
249	my ($path) = @_;	1018	my ($path) = @_;
250		1019
251	$script_pkg{$path} ||= do {	1020	$extension_pkg{$path} ||= do {
252	my $pkg = "urxvt::" . ($script_pkg++);	1021	$path =~ /([^\/\\]+)$/;
		1022	my $pkg = $1;
		1023	$pkg =~ s/[^[:word:]]/_/g;
		1024	$pkg = "urxvt::ext::$pkg";
253		1025
254	verbose 3, "loading script '$path' into package '$pkg'";	1026	verbose 3, "loading extension '$path' into package '$pkg'";
255		1027
256	open my $fh, "<:raw", $path	1028	open my $fh, "<:raw", $path
257	or die "$path: $!";	1029	or die "$path: $!";
258		1030
259	my $source = "package $pkg; use strict; use utf8;\n"	1031	my $source =
		1032	"package $pkg; use strict; use utf8; no warnings 'utf8';\n"
260	. "#line 1 \"$path\"\n{\n"	1033	. "#line 1 \"$path\"\n{\n"
261	. (do { local $/; <$fh> })	1034	. (do { local $/; <$fh> })
262	. "\n};\n1";	1035	. "\n};\n1";
263		1036
		1037	eval $source
264	eval $source or die "$path: $@";	1038	or die "$path: $@";
265		1039
266	$pkg	1040	$pkg
267	}	1041	}
268	}	1042	}
269		1043
		1044	our $retval; # return value for urxvt
		1045
270	# called by the rxvt core	1046	# called by the rxvt core
271	sub invoke {	1047	sub invoke {
272	local $term = shift;	1048	local $TERM = shift;
273	my $htype = shift;	1049	my $htype = shift;
274		1050
275	if ($htype == 0) { # INIT	1051	if ($htype == 0) { # INIT
276	my @dirs = ((split /:/, $term->resource ("perl_lib")), "$LIBDIR/perl");	1052	my @dirs = $TERM->perl_libdirs;
277		1053
278	for my $ext (split /:/, $term->resource ("perl_ext")) {	1054	my %ext_arg;
		1055
		1056	{
		1057	my @init = @TERM_INIT;
		1058	@TERM_INIT = ();
		1059	$_->($TERM) for @init;
		1060	my @pkg = @TERM_EXT;
		1061	@TERM_EXT = ();
		1062	$TERM->register_package ($_) for @pkg;
		1063	}
		1064
		1065	for (grep $_, map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2) {
		1066	if ($_ eq "default") {
		1067	$ext_arg{$_} ||= [] for qw(selection option-popup selection-popup searchable-scrollback readline);
		1068	} elsif (/^-(.*)$/) {
		1069	delete $ext_arg{$1};
		1070	} elsif (/^([^<]+)<(.*)>$/) {
		1071	push @{ $ext_arg{$1} }, $2;
		1072	} else {
		1073	$ext_arg{$_} ||= [];
		1074	}
		1075	}
		1076
		1077	for my $ext (sort keys %ext_arg) {
279	my @files = grep -f $_, map "$_/$ext", @dirs;	1078	my @files = grep -f $_, map "$_/$ext", @dirs;
280		1079
281	if (@files) {	1080	if (@files) {
282	register_package script_package $files[0];	1081	$TERM->register_package (extension_package $files[0], $ext_arg{$ext});
283	} else {	1082	} else {
284	warn "perl extension '$ext' not found in perl library search path\n";	1083	warn "perl extension '$ext' not found in perl library search path\n";
285	}	1084	}
286	}	1085	}
287		1086
		1087	eval "#line 1 \"--perl-eval resource/argument\"\n" . $TERM->resource ("perl_eval");
		1088	warn $@ if $@;
		1089	}
		1090
		1091	$retval = undef;
		1092
		1093	if (my $cb = $TERM->{_hook}[$htype]) {
		1094	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
		1095	if $verbosity >= 10;
		1096
		1097	for my $pkg (keys %$cb) {
		1098	my $retval_ = eval { $cb->{$pkg}->($TERM->{_pkg}{$pkg}, @_) };
		1099	$retval ||= $retval_;
		1100
		1101	if ($@) {
		1102	$TERM->ungrab; # better to lose the grab than the session
		1103	warn $@;
		1104	}
		1105	}
		1106
		1107	verbose 11, "$HOOKNAME[$htype] returning <$retval>"
		1108	if $verbosity >= 11;
		1109	}
		1110
288	} elsif ($htype == 1) { # DESTROY	1111	if ($htype == 1) { # DESTROY
289	if (my $hook = $term->{_hook}) {	1112	# clear package objects
290	for my $htype (0..$#$hook) {	1113	%$_ = () for values %{ $TERM->{_pkg} };
291	$hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} }	1114
292	or set_should_invoke $htype, 0;	1115	# clear package
		1116	%$TERM = ();
		1117	}
		1118
		1119	$retval
		1120	}
		1121
		1122	sub SET_COLOR($$$) {
		1123	SET_BGCOLOR (SET_FGCOLOR ($_[0], $_[1]), $_[2])
		1124	}
		1125
		1126	sub rend2mask {
		1127	no strict 'refs';
		1128	my ($str, $mask) = (@_, 0);
		1129	my %color = ( fg => undef, bg => undef );
		1130	my @failed;
		1131	for my $spec ( split /\s+/, $str ) {
		1132	if ( $spec =~ /^([fb]g)[_:-]?(\d+)/i ) {
		1133	$color{lc($1)} = $2;
		1134	} else {
		1135	my $neg = $spec =~ s/^[-^]//;
		1136	unless ( exists &{"RS_$spec"} ) {
		1137	push @failed, $spec;
		1138	next;
		1139	}
		1140	my $cur = &{"RS_$spec"};
		1141	if ( $neg ) {
		1142	$mask &= ~$cur;
		1143	} else {
		1144	$mask |= $cur;
293	}	1145	}
294	}	1146	}
295	}	1147	}
		1148	($mask, @color{qw(fg bg)}, \@failed)
		1149	}
296		1150
297	my $cb = $term->{_hook}[$htype]	1151	# urxvt::term::extension
298	or return;
299		1152
300	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $term, @_) . ")"	1153	package urxvt::term::extension;
301	if $verbosity >= 10;
302		1154
		1155	sub enable {
		1156	my ($self, %hook) = @_;
		1157	my $pkg = $self->{_pkg};
		1158
303	while (my ($k, $v) = each %$cb) {	1159	while (my ($name, $cb) = each %hook) {
304	return 1 if $v->($term, @_);	1160	my $htype = $HOOKTYPE{uc $name};
		1161	defined $htype
		1162	or Carp::croak "unsupported hook type '$name'";
		1163
		1164	$self->set_should_invoke ($htype, +1)
		1165	unless exists $self->{term}{_hook}[$htype]{$pkg};
		1166
		1167	$self->{term}{_hook}[$htype]{$pkg} = $cb;
305	}	1168	}
		1169	}
306		1170
		1171	sub disable {
		1172	my ($self, @hook) = @_;
		1173	my $pkg = $self->{_pkg};
		1174
		1175	for my $name (@hook) {
		1176	my $htype = $HOOKTYPE{uc $name};
		1177	defined $htype
		1178	or Carp::croak "unsupported hook type '$name'";
		1179
		1180	$self->set_should_invoke ($htype, -1)
		1181	if delete $self->{term}{_hook}[$htype]{$pkg};
307	0	1182	}
308	}	1183	}
309		1184
310	=back	1185	our $AUTOLOAD;
		1186
		1187	sub AUTOLOAD {
		1188	$AUTOLOAD =~ /:([^:]+)$/
		1189	or die "FATAL: \$AUTOLOAD '$AUTOLOAD' unparsable";
		1190
		1191	eval qq{
		1192	sub $AUTOLOAD {
		1193	my \$proxy = shift;
		1194	\$proxy->{term}->$1 (\@_)
		1195	}
		1196	1
		1197	} or die "FATAL: unable to compile method forwarder: $@";
		1198
		1199	goto &$AUTOLOAD;
		1200	}
		1201
		1202	sub DESTROY {
		1203	# nop
		1204	}
		1205
		1206	# urxvt::destroy_hook
		1207
		1208	sub urxvt::destroy_hook::DESTROY {
		1209	${$_[0]}->();
		1210	}
		1211
		1212	sub urxvt::destroy_hook(&) {
		1213	bless \shift, urxvt::destroy_hook::
		1214	}
		1215
		1216	package urxvt::anyevent;
		1217
		1218	=head2 The C<urxvt::anyevent> Class
		1219
		1220	The sole purpose of this class is to deliver an interface to the
		1221	C<AnyEvent> module - any module using it will work inside urxvt without
		1222	further programming. The only exception is that you cannot wait on
		1223	condition variables, but non-blocking condvar use is ok.
		1224
		1225	In practical terms this means is that you cannot use blocking APIs, but
		1226	the non-blocking variant should work.
		1227
		1228	=cut
		1229
		1230	our $VERSION = '5.23';
		1231
		1232	$INC{"urxvt/anyevent.pm"} = 1; # mark us as there
		1233	push @AnyEvent::REGISTRY, [urxvt => urxvt::anyevent::];
		1234
		1235	sub timer {
		1236	my ($class, %arg) = @_;
		1237
		1238	my $cb = $arg{cb};
		1239
		1240	urxvt::timer
		1241	->new
		1242	->after ($arg{after}, $arg{interval})
		1243	->cb ($arg{interval} ? $cb : sub {
		1244	$_[0]->stop; # need to cancel manually
		1245	$cb->();
		1246	})
		1247	}
		1248
		1249	sub io {
		1250	my ($class, %arg) = @_;
		1251
		1252	my $cb = $arg{cb};
		1253	my $fd = fileno $arg{fh};
		1254	defined $fd or $fd = $arg{fh};
		1255
		1256	bless [$arg{fh}, urxvt::iow
		1257	->new
		1258	->fd ($fd)
		1259	->events (($arg{poll} =~ /r/ ? 1 : 0)
		1260	| ($arg{poll} =~ /w/ ? 2 : 0))
		1261	->start
		1262	->cb ($cb)
		1263	], urxvt::anyevent::
		1264	}
		1265
		1266	sub idle {
		1267	my ($class, %arg) = @_;
		1268
		1269	my $cb = $arg{cb};
		1270
		1271	urxvt::iw
		1272	->new
		1273	->start
		1274	->cb ($cb)
		1275	}
		1276
		1277	sub child {
		1278	my ($class, %arg) = @_;
		1279
		1280	my $cb = $arg{cb};
		1281
		1282	urxvt::pw
		1283	->new
		1284	->start ($arg{pid})
		1285	->cb (sub {
		1286	$_[0]->stop; # need to cancel manually
		1287	$cb->($_[0]->rpid, $_[0]->rstatus);
		1288	})
		1289	}
		1290
		1291	sub DESTROY {
		1292	$_[0][1]->stop;
		1293	}
		1294
		1295	# only needed for AnyEvent < 6 compatibility
		1296	sub one_event {
		1297	Carp::croak "AnyEvent->one_event blocking wait unsupported in urxvt, use a non-blocking API";
		1298	}
		1299
		1300	package urxvt::term;
311		1301
312	=head2 The C<urxvt::term> Class	1302	=head2 The C<urxvt::term> Class
313		1303
314	=over 4	1304	=over 4
		1305
		1306	=cut
		1307
		1308	# find on_xxx subs in the package and register them
		1309	# as hooks
		1310	sub register_package {
		1311	my ($self, $pkg, $argv) = @_;
		1312
		1313	no strict 'refs';
		1314
		1315	urxvt::verbose 6, "register package $pkg to $self";
		1316
		1317	@{"$pkg\::ISA"} = urxvt::term::extension::;
		1318
		1319	my $proxy = bless {
		1320	_pkg => $pkg,
		1321	argv => $argv,
		1322	}, $pkg;
		1323	Scalar::Util::weaken ($proxy->{term} = $self);
		1324
		1325	$self->{_pkg}{$pkg} = $proxy;
		1326
		1327	for my $name (@HOOKNAME) {
		1328	if (my $ref = $pkg->can ("on_" . lc $name)) {
		1329	$proxy->enable ($name => $ref);
		1330	}
		1331	}
		1332	}
		1333
		1334	sub perl_libdirs {
		1335	map { split /:/ }
		1336	$_[0]->resource ("perl_lib"),
		1337	$ENV{URXVT_PERL_LIB},
		1338	"$ENV{HOME}/.urxvt/ext",
		1339	"$LIBDIR/perl"
		1340	}
		1341
		1342	sub scan_meta {
		1343	my ($self) = @_;
		1344	my @libdirs = perl_libdirs $self;
		1345
		1346	return if $self->{meta_libdirs} eq join "\x00", @libdirs;
		1347
		1348	my %meta;
		1349
		1350	$self->{meta_libdirs} = join "\x00", @libdirs;
		1351	$self->{meta} = \%meta;
		1352
		1353	for my $dir (reverse @libdirs) {
		1354	opendir my $fh, $dir
		1355	or next;
		1356	for my $ext (readdir $fh) {
		1357	$ext ne "."
		1358	and $ext ne ".."
		1359	and open my $fh, "<", "$dir/$ext"
		1360	or next;
		1361
		1362	while (<$fh>) {
		1363	if (/^#:META:X_RESOURCE:(.*)/) {
		1364	my ($pattern, $type, $desc) = split /:/, $1;
		1365	$pattern =~ s/^%(\.|$)/$ext$1/g; # % in pattern == extension name
		1366	if ($pattern =~ /[^a-zA-Z0-9\-\.]/) {
		1367	warn "$dir/$ext: meta resource '$pattern' contains illegal characters (not alphanumeric nor . nor *)\n";
		1368	} else {
		1369	$meta{resource}{$pattern} = [$ext, $type, $desc];
		1370	}
		1371	} elsif (/^\s*(?:#|$)/) {
		1372	# skip other comments and empty lines
		1373	} else {
		1374	last; # stop parsing on first non-empty non-comment line
		1375	}
		1376	}
		1377	}
		1378	}
		1379	}
		1380
		1381	=item $term = new urxvt::term $envhashref, $rxvtname, [arg...]
		1382
		1383	Creates a new terminal, very similar as if you had started it with system
		1384	C<$rxvtname, arg...>. C<$envhashref> must be a reference to a C<%ENV>-like
		1385	hash which defines the environment of the new terminal.
		1386
		1387	Croaks (and probably outputs an error message) if the new instance
		1388	couldn't be created. Returns C<undef> if the new instance didn't
		1389	initialise perl, and the terminal object otherwise. The C<init> and
		1390	C<start> hooks will be called before this call returns, and are free to
		1391	refer to global data (which is race free).
		1392
		1393	=cut
		1394
		1395	sub new {
		1396	my ($class, $env, @args) = @_;
		1397
		1398	$env or Carp::croak "environment hash missing in call to urxvt::term->new";
		1399	@args or Carp::croak "name argument missing in call to urxvt::term->new";
		1400
		1401	_new ([ map "$_=$env->{$_}", keys %$env ], \@args);
		1402	}
		1403
		1404	=item $term->destroy
		1405
		1406	Destroy the terminal object (close the window, free resources
		1407	etc.). Please note that @@RXVT_NAME@@ will not exit as long as any event
		1408	watchers (timers, io watchers) are still active.
		1409
		1410	=item $term->exec_async ($cmd[, @args])
		1411
		1412	Works like the combination of the C<fork>/C<exec> builtins, which executes
		1413	("starts") programs in the background. This function takes care of setting
		1414	the user environment before exec'ing the command (e.g. C<PATH>) and should
		1415	be preferred over explicit calls to C<exec> or C<system>.
		1416
		1417	Returns the pid of the subprocess or C<undef> on error.
		1418
		1419	=cut
		1420
		1421	sub exec_async {
		1422	my $self = shift;
		1423
		1424	my $pid = fork;
		1425
		1426	return $pid
		1427	if !defined $pid or $pid;
		1428
		1429	%ENV = %{ $self->env };
		1430
		1431	exec @_;
		1432	urxvt::_exit 255;
		1433	}
		1434
		1435	=item $isset = $term->option ($optval[, $set])
		1436
		1437	Returns true if the option specified by C<$optval> is enabled, and
		1438	optionally change it. All option values are stored by name in the hash
		1439	C<%urxvt::OPTION>. Options not enabled in this binary are not in the hash.
		1440
		1441	Here is a likely non-exhaustive list of option names, please see the
		1442	source file F</src/optinc.h> to see the actual list:
		1443
		1444	borderLess buffered console cursorBlink cursorUnderline hold iconic
		1445	insecure intensityStyles iso14755 iso14755_52 jumpScroll loginShell
		1446	mapAlert meta8 mouseWheelScrollPage override_redirect pastableTabs
		1447	pointerBlank reverseVideo scrollBar scrollBar_floating scrollBar_right
		1448	scrollTtyKeypress scrollTtyOutput scrollWithBuffer secondaryScreen
		1449	secondaryScroll skipBuiltinGlyphs skipScroll transparent tripleclickwords
		1450	urgentOnBell utmpInhibit visualBell
315		1451
316	=item $value = $term->resource ($name[, $newval])	1452	=item $value = $term->resource ($name[, $newval])
317		1453
318	Returns the current resource value associated with a given name and	1454	Returns the current resource value associated with a given name and
319	optionally sets a new value. Setting values is most useful in the C<init>	1455	optionally sets a new value. Setting values is most useful in the C<init>
…		…
328	likely change).	1464	likely change).
329		1465
330	Please note that resource strings will currently only be freed when the	1466	Please note that resource strings will currently only be freed when the
331	terminal is destroyed, so changing options frequently will eat memory.	1467	terminal is destroyed, so changing options frequently will eat memory.
332		1468
333	Here is a a likely non-exhaustive list of resource names, not all of which	1469	Here is a likely non-exhaustive list of resource names, not all of which
334	are supported in every build, please see the source to see the actual	1470	are supported in every build, please see the source file F</src/rsinc.h>
335	list:	1471	to see the actual list:
336		1472
337	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont	1473	answerbackstring backgroundPixmap backspace_key blendtype blurradius
338	borderLess color cursorBlink cursorUnderline cutchars delete_key	1474	boldFont boldItalicFont borderLess buffered chdir color cursorBlink
339	display_name embed ext_bwidth fade font geometry hold iconName	1475	cursorUnderline cutchars delete_key depth display_name embed ext_bwidth
340	imFont imLocale inputMethod insecure int_bwidth intensityStyles	1476	fade font geometry hold iconName iconfile imFont imLocale inputMethod
		1477	insecure int_bwidth intensityStyles iso14755 iso14755_52 italicFont
341	italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier	1478	jumpScroll letterSpace lineSpace loginShell mapAlert meta8 modifier
342	mouseWheelScrollPage name pastableTabs path perl_eval perl_ext	1479	mouseWheelScrollPage name override_redirect pastableTabs path perl_eval
343	perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd	1480	perl_ext_1 perl_ext_2 perl_lib pointerBlank pointerBlankDelay
344	reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating	1481	preeditType print_pipe pty_fd reverseVideo saveLines scrollBar
345	scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput	1482	scrollBar_align scrollBar_floating scrollBar_right scrollBar_thickness
346	scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle	1483	scrollTtyKeypress scrollTtyOutput scrollWithBuffer scrollstyle
347	shade term_name title transparent transparent_all tripleclickwords	1484	secondaryScreen secondaryScroll shade skipBuiltinGlyphs skipScroll
		1485	term_name title transient_for transparent tripleclickwords urgentOnBell
348	utmpInhibit visualBell	1486	utmpInhibit visualBell
349		1487
350	=cut	1488	=cut
351		1489
352	sub urxvt::term::resource($$;$) {	1490	sub resource($$;$) {
353	my ($self, $name) = (shift, shift);	1491	my ($self, $name) = (shift, shift);
354	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);	1492	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);
355	goto &urxvt::term::_resource;	1493	goto &urxvt::term::_resource
356	}	1494	}
		1495
		1496	=item $value = $term->x_resource ($pattern)
		1497
		1498	Returns the X-Resource for the given pattern, excluding the program or
		1499	class name, i.e. C<< $term->x_resource ("boldFont") >> should return the
		1500	same value as used by this instance of rxvt-unicode. Returns C<undef> if no
		1501	resource with that pattern exists.
		1502
		1503	This method should only be called during the C<on_start> hook, as there is
		1504	only one resource database per display, and later invocations might return
		1505	the wrong resources.
		1506
		1507	=item $value = $term->x_resource_boolean ($pattern)
		1508
		1509	Like C<x_resource>, above, but interprets the string value as a boolean
		1510	and returns C<1> for true values, C<0> for false values and C<undef> if
		1511	the resource or option isn't specified.
		1512
		1513	You should always use this method to parse boolean resources.
		1514
		1515	=cut
		1516
		1517	sub x_resource_boolean {
		1518	my $res = &x_resource;
		1519
		1520	$res =~ /^\s*(?:true|yes|on|1)\s*$/i ? 1 : defined $res && 0
		1521	}
		1522
		1523	=item $success = $term->parse_keysym ($key, $octets)
		1524
		1525	Adds a key binding exactly as specified via a resource. See the
		1526	C<keysym> resource in the @@RXVT_NAME@@(1) manpage.
		1527
		1528	=item $term->register_command ($keysym, $modifiermask, $string)
		1529
		1530	Adds a key binding. This is a lower level api compared to
		1531	C<parse_keysym>, as it expects a parsed key description, and can be
		1532	used only inside either the C<on_init> hook, to add a binding, or the
		1533	C<on_register_command> hook, to modify a parsed binding.
		1534
		1535	=item $rend = $term->rstyle ([$new_rstyle])
		1536
		1537	Return and optionally change the current rendition. Text that is output by
		1538	the terminal application will use this style.
		1539
		1540	=item ($row, $col) = $term->screen_cur ([$row, $col])
		1541
		1542	Return the current coordinates of the text cursor position and optionally
		1543	set it (which is usually bad as applications don't expect that).
357		1544
358	=item ($row, $col) = $term->selection_mark ([$row, $col])	1545	=item ($row, $col) = $term->selection_mark ([$row, $col])
359		1546
360	=item ($row, $col) = $term->selection_beg ([$row, $col])	1547	=item ($row, $col) = $term->selection_beg ([$row, $col])
361		1548
362	=item ($row, $col) = $term->selection_end ([$row, $col])	1549	=item ($row, $col) = $term->selection_end ([$row, $col])
363		1550
364	Return the current values of the selection mark, begin or end positions,	1551	Return the current values of the selection mark, begin or end positions.
365	and optionally set them to new values.
366		1552
		1553	When arguments are given, then the selection coordinates are set to
		1554	C<$row> and C<$col>, and the selection screen is set to the current
		1555	screen.
		1556
		1557	=item $screen = $term->selection_screen ([$screen])
		1558
		1559	Returns the current selection screen, and then optionally sets it.
		1560
		1561	=item $term->selection_make ($eventtime[, $rectangular])
		1562
		1563	Tries to make a selection as set by C<selection_beg> and
		1564	C<selection_end>. If C<$rectangular> is true (default: false), a
		1565	rectangular selection will be made. This is the preferred function to make
		1566	a selection.
		1567
367	=item $success = $term->selection_grab ($eventtime)	1568	=item $success = $term->selection_grab ($eventtime[, $clipboard])
368		1569
369	Try to request the primary selection from the server (for example, as set	1570	Try to acquire ownership of the primary (clipboard if C<$clipboard> is
370	by the next method).	1571	true) selection from the server. The corresponding text can be set
		1572	with the next method. No visual feedback will be given. This function
		1573	is mostly useful from within C<on_sel_grab> hooks.
371		1574
372	=item $oldtext = $term->selection ([$newtext])	1575	=item $oldtext = $term->selection ([$newtext, $clipboard])
373		1576
374	Return the current selection text and optionally replace it by C<$newtext>.	1577	Return the current selection (clipboard if C<$clipboard> is true) text
		1578	and optionally replace it by C<$newtext>.
375		1579
		1580	=item $term->selection_clear ([$clipboard])
		1581
		1582	Revoke ownership of the primary (clipboard if C<$clipboard> is true) selection.
		1583
376	=item $term->scr_overlay ($x, $y, $text)	1584	=item $term->overlay_simple ($x, $y, $text)
377		1585
378	Create a simple multi-line overlay box. See the next method for details.	1586	Create a simple multi-line overlay box. See the next method for details.
379		1587
380	=cut	1588	=cut
381		1589
382	sub urxvt::term::scr_overlay {	1590	sub overlay_simple {
383	my ($self, $x, $y, $text) = @_;	1591	my ($self, $x, $y, $text) = @_;
384		1592
385	my @lines = split /\n/, $text;	1593	my @lines = split /\n/, $text;
386		1594
387	my $w = 0;	1595	my $w = List::Util::max map $self->strwidth ($_), @lines;
388	for (map $self->strwidth ($_), @lines) {
389	$w = $_ if $w < $_;
390	}
391		1596
392	$self->scr_overlay_new ($x, $y, $w, scalar @lines);	1597	my $overlay = $self->overlay ($x, $y, $w, scalar @lines);
393	$self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;	1598	$overlay->set (0, $_, $lines[$_]) for 0.. $#lines;
394	}
395		1599
		1600	$overlay
		1601	}
		1602
396	=item $term->scr_overlay_new ($x, $y, $width, $height)	1603	=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
397		1604
398	Create a new (empty) overlay at the given position with the given	1605	Create a new (empty) overlay at the given position with the given
399	width/height. A border will be put around the box. If either C<$x> or	1606	width/height. C<$rstyle> defines the initial rendition style
400	C<$y> is negative, then this is counted from the right/bottom side,	1607	(default: C<OVERLAY_RSTYLE>).
401	respectively.
402		1608
403	=item $term->scr_overlay_off	1609	If C<$border> is C<2> (default), then a decorative border will be put
		1610	around the box.
404		1611
405	Switch the overlay off again.	1612	If either C<$x> or C<$y> is negative, then this is counted from the
		1613	right/bottom side, respectively.
406		1614
407	=item $term->scr_overlay_set_char ($x, $y, $char, $rend = OVERLAY_RSTYLE)	1615	This method returns an urxvt::overlay object. The overlay will be visible
		1616	as long as the perl object is referenced.
408		1617
409	Put a single character (specified numerically) at the given overlay	1618	The methods currently supported on C<urxvt::overlay> objects are:
410	position.
411		1619
		1620	=over 4
		1621
412	=item $term->scr_overlay_set ($x, $y, $text)	1622	=item $overlay->set ($x, $y, $text[, $rend])
413		1623
414	Write a string at the given position into the overlay.	1624	Similar to C<< $term->ROW_t >> and C<< $term->ROW_r >> in that it puts
		1625	text in rxvt-unicode's special encoding and an array of rendition values
		1626	at a specific position inside the overlay.
415		1627
		1628	If C<$rend> is missing, then the rendition will not be changed.
		1629
		1630	=item $overlay->hide
		1631
		1632	If visible, hide the overlay, but do not destroy it.
		1633
		1634	=item $overlay->show
		1635
		1636	If hidden, display the overlay again.
		1637
		1638	=back
		1639
		1640	=item $popup = $term->popup ($event)
		1641
		1642	Creates a new C<urxvt::popup> object that implements a popup menu. The
		1643	C<$event> I<must> be the event causing the menu to pop up (a button event,
		1644	currently).
		1645
		1646	=cut
		1647
		1648	sub popup {
		1649	my ($self, $event) = @_;
		1650
		1651	$self->grab ($event->{time}, 1)
		1652	or return;
		1653
		1654	my $popup = bless {
		1655	term => $self,
		1656	event => $event,
		1657	}, urxvt::popup::;
		1658
		1659	Scalar::Util::weaken $popup->{term};
		1660
		1661	$self->{_destroy}{$popup} = urxvt::destroy_hook { $popup->{popup}->destroy };
		1662	Scalar::Util::weaken $self->{_destroy}{$popup};
		1663
		1664	$popup
		1665	}
		1666
416	=item $cellwidth = $term->strwidth $string	1667	=item $cellwidth = $term->strwidth ($string)
417		1668
418	Returns the number of screen-cells this string would need. Correctly	1669	Returns the number of screen-cells this string would need. Correctly
419	accounts for wide and combining characters.	1670	accounts for wide and combining characters.
420		1671
421	=item $octets = $term->locale_encode $string	1672	=item $octets = $term->locale_encode ($string)
422		1673
423	Convert the given text string into the corresponding locale encoding.	1674	Convert the given text string into the corresponding locale encoding.
424		1675
425	=item $string = $term->locale_decode $octets	1676	=item $string = $term->locale_decode ($octets)
426		1677
427	Convert the given locale-encoded octets into a perl string.	1678	Convert the given locale-encoded octets into a perl string.
428		1679
		1680	=item $term->scr_xor_span ($beg_row, $beg_col, $end_row, $end_col[, $rstyle])
		1681
		1682	XORs the rendition values in the given span with the provided value
		1683	(default: C<RS_RVid>), which I<MUST NOT> contain font styles. Useful in
		1684	refresh hooks to provide effects similar to the selection.
		1685
		1686	=item $term->scr_xor_rect ($beg_row, $beg_col, $end_row, $end_col[, $rstyle1[, $rstyle2]])
		1687
		1688	Similar to C<scr_xor_span>, but xors a rectangle instead. Trailing
		1689	whitespace will additionally be xored with the C<$rstyle2>, which defaults
		1690	to C<RS_RVid | RS_Uline>, which removes reverse video again and underlines
		1691	it instead. Both styles I<MUST NOT> contain font styles.
		1692
		1693	=item $term->scr_bell
		1694
		1695	Ring the bell!
		1696
		1697	=item $term->scr_add_lines ($string)
		1698
		1699	Write the given text string to the screen, as if output by the application
		1700	running inside the terminal. It may not contain command sequences (escape
		1701	codes), but is free to use line feeds, carriage returns and tabs. The
		1702	string is a normal text string, not in locale-dependent encoding.
		1703
		1704	Normally its not a good idea to use this function, as programs might be
		1705	confused by changes in cursor position or scrolling. Its useful inside a
		1706	C<on_add_lines> hook, though.
		1707
		1708	=item $term->scr_change_screen ($screen)
		1709
		1710	Switch to given screen - 0 primary, 1 secondary.
		1711
		1712	=item $term->cmd_parse ($octets)
		1713
		1714	Similar to C<scr_add_lines>, but the argument must be in the
		1715	locale-specific encoding of the terminal and can contain command sequences
		1716	(escape codes) that will be interpreted.
		1717
429	=item $term->tt_write ($octets)	1718	=item $term->tt_write ($octets)
430		1719
431	Write the octets given in C<$data> to the tty (i.e. as program input). To	1720	Write the octets given in C<$octets> to the tty (i.e. as program input). To
432	pass characters instead of octets, you should convert your strings first	1721	pass characters instead of octets, you should convert your strings first
433	to the locale-specific encoding using C<< $term->locale_encode >>.	1722	to the locale-specific encoding using C<< $term->locale_encode >>.
434		1723
		1724	=item $term->tt_paste ($octets)
		1725
		1726	Write the octets given in C<$octets> to the tty as a paste, converting NL to
		1727	CR and bracketing the data with control sequences if bracketed paste mode
		1728	is set.
		1729
		1730	=item $old_events = $term->pty_ev_events ([$new_events])
		1731
		1732	Replaces the event mask of the pty watcher by the given event mask. Can
		1733	be used to suppress input and output handling to the pty/tty. See the
		1734	description of C<< urxvt::timer->events >>. Make sure to always restore
		1735	the previous value.
		1736
		1737	=item $fd = $term->pty_fd
		1738
		1739	Returns the master file descriptor for the pty in use, or C<-1> if no pty
		1740	is used.
		1741
		1742	=item $windowid = $term->parent
		1743
		1744	Return the window id of the toplevel window.
		1745
		1746	=item $windowid = $term->vt
		1747
		1748	Return the window id of the terminal window.
		1749
		1750	=item $term->vt_emask_add ($x_event_mask)
		1751
		1752	Adds the specified events to the vt event mask. Useful e.g. when you want
		1753	to receive pointer events all the times:
		1754
		1755	$term->vt_emask_add (urxvt::PointerMotionMask);
		1756
		1757	=item $term->set_urgency ($set)
		1758
		1759	Enable/disable the urgency hint on the toplevel window.
		1760
		1761	=item $term->focus_in
		1762
		1763	=item $term->focus_out
		1764
		1765	=item $term->key_press ($state, $keycode[, $time])
		1766
		1767	=item $term->key_release ($state, $keycode[, $time])
		1768
		1769	Deliver various fake events to to terminal.
		1770
		1771	=item $window_width = $term->width
		1772
		1773	=item $window_height = $term->height
		1774
		1775	=item $font_width = $term->fwidth
		1776
		1777	=item $font_height = $term->fheight
		1778
		1779	=item $font_ascent = $term->fbase
		1780
435	=item $nrow = $term->nrow	1781	=item $terminal_rows = $term->nrow
436		1782
437	=item $ncol = $term->ncol	1783	=item $terminal_columns = $term->ncol
438		1784
439	Return the number of rows/columns of the terminal window (i.e. as	1785	=item $has_focus = $term->focus
440	specified by C<-geometry>, excluding any scrollback).
441		1786
		1787	=item $is_mapped = $term->mapped
		1788
		1789	=item $max_scrollback = $term->saveLines
		1790
		1791	=item $nrow_plus_saveLines = $term->total_rows
		1792
		1793	=item $topmost_scrollback_row = $term->top_row
		1794
		1795	Return various integers describing terminal characteristics.
		1796
		1797	=item $x_display = $term->display_id
		1798
		1799	Return the DISPLAY used by rxvt-unicode.
		1800
		1801	=item $lc_ctype = $term->locale
		1802
		1803	Returns the LC_CTYPE category string used by this rxvt-unicode.
		1804
442	=item $nsaved = $term->nsaved	1805	=item $env = $term->env
443		1806
444	Returns the number of lines in the scrollback buffer.	1807	Returns a copy of the environment in effect for the terminal as a hashref
		1808	similar to C<\%ENV>.
		1809
		1810	=item @envv = $term->envv
		1811
		1812	Returns the environment as array of strings of the form C<VAR=VALUE>.
		1813
		1814	=item @argv = $term->argv
		1815
		1816	Return the argument vector as this terminal, similar to @ARGV, but
		1817	includes the program name as first element.
		1818
		1819	=cut
		1820
		1821	sub env {
		1822	+{ map /^([^=]+)(?:=(.*))?$/s && ($1 => $2), $_[0]->envv }
		1823	}
		1824
		1825	=item $modifiermask = $term->ModLevel3Mask
		1826
		1827	=item $modifiermask = $term->ModMetaMask
		1828
		1829	=item $modifiermask = $term->ModNumLockMask
		1830
		1831	Return the modifier masks corresponding to the "ISO Level 3 Shift" (often
		1832	AltGr), the meta key (often Alt) and the num lock key, if applicable.
		1833
		1834	=item $screen = $term->current_screen
		1835
		1836	Returns the currently displayed screen (0 primary, 1 secondary).
		1837
		1838	=item $cursor_is_hidden = $term->hidden_cursor
		1839
		1840	Returns whether the cursor is currently hidden or not.
445		1841
446	=item $view_start = $term->view_start ([$newvalue])	1842	=item $view_start = $term->view_start ([$newvalue])
447		1843
448	Returns the negative row number of the topmost line. Minimum value is	1844	Returns the row number of the topmost displayed line. Maximum value is
449	C<0>, which displays the normal terminal contents. Larger values scroll	1845	C<0>, which displays the normal terminal contents. Lower values scroll
450	this many lines into the scrollback buffer.	1846	this many lines into the scrollback buffer.
451		1847
452	=item $term->want_refresh	1848	=item $term->want_refresh
453		1849
454	Requests a screen refresh. At the next opportunity, rxvt-unicode will	1850	Requests a screen refresh. At the next opportunity, rxvt-unicode will
…		…
457		1853
458	Used after changing terminal contents to display them.	1854	Used after changing terminal contents to display them.
459		1855
460	=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])	1856	=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])
461		1857
462	Returns the text of the entire row with number C<$row_number>. Row C<0>	1858	Returns the text of the entire row with number C<$row_number>. Row C<< $term->top_row >>
463	is the topmost terminal line, row C<< $term->$ncol-1 >> is the bottommost	1859	is the topmost terminal line, row C<< $term->nrow-1 >> is the bottommost
464	terminal line. The scrollback buffer starts at line C<-1> and extends to	1860	terminal line. Nothing will be returned if a nonexistent line
465	line C<< -$term->nsaved >>.	1861	is requested.
466		1862
467	If C<$new_text> is specified, it will replace characters in the current	1863	If C<$new_text> is specified, it will replace characters in the current
468	line, starting at column C<$start_col> (default C<0>), which is useful	1864	line, starting at column C<$start_col> (default C<0>), which is useful
469	to replace only parts of a line. The font iindex in the rendition will	1865	to replace only parts of a line. The font index in the rendition will
470	automatically be updated.	1866	automatically be updated.
471		1867
472	C<$text> is in a special encoding: tabs and wide characters that use more	1868	C<$text> is in a special encoding: tabs and wide characters that use more
473	than one cell when displayed are padded with urxvt::NOCHAR characters	1869	than one cell when displayed are padded with C<$urxvt::NOCHAR> (chr 65535)
474	(C<chr 65535>). Characters with combining characters and other characters	1870	characters. Characters with combining characters and other characters that
475	that do not fit into the normal tetx encoding will be replaced with	1871	do not fit into the normal text encoding will be replaced with characters
476	characters in the private use area.	1872	in the private use area.
477		1873
478	You have to obey this encoding when changing text. The advantage is	1874	You have to obey this encoding when changing text. The advantage is
479	that C<substr> and similar functions work on screen cells and not on	1875	that C<substr> and similar functions work on screen cells and not on
480	characters.	1876	characters.
481		1877
…		…
488	bitsets. Rendition bitsets contain information about colour, font, font	1884	bitsets. Rendition bitsets contain information about colour, font, font
489	styles and similar information. See also C<< $term->ROW_t >>.	1885	styles and similar information. See also C<< $term->ROW_t >>.
490		1886
491	When setting rendition, the font mask will be ignored.	1887	When setting rendition, the font mask will be ignored.
492		1888
493	See the section on RENDITION, below.	1889	See the section on RENDITION, above.
494		1890
495	=item $length = $term->ROW_l ($row_number[, $new_length])	1891	=item $length = $term->ROW_l ($row_number[, $new_length])
496		1892
497	Returns the number of screen cells that are in use ("the line length"). If	1893	Returns the number of screen cells that are in use ("the line
498	it is C<-1>, then the line is part of a multiple-row logical "line", which	1894	length"). Unlike the urxvt core, this returns C<< $term->ncol >> if the
499	means all characters are in use and it is continued on the next row.	1895	line is joined with the following one.
		1896
		1897	=item $bool = $term->is_longer ($row_number)
		1898
		1899	Returns true if the row is part of a multiple-row logical "line" (i.e.
		1900	joined with the following row), which means all characters are in use
		1901	and it is continued on the next row (and possibly a continuation of the
		1902	previous row(s)).
		1903
		1904	=item $line = $term->line ($row_number)
		1905
		1906	Create and return a new C<urxvt::line> object that stores information
		1907	about the logical line that row C<$row_number> is part of. It supports the
		1908	following methods:
		1909
		1910	=over 4
		1911
		1912	=item $text = $line->t ([$new_text])
		1913
		1914	Returns or replaces the full text of the line, similar to C<ROW_t>
		1915
		1916	=item $rend = $line->r ([$new_rend])
		1917
		1918	Returns or replaces the full rendition array of the line, similar to C<ROW_r>
		1919
		1920	=item $length = $line->l
		1921
		1922	Returns the length of the line in cells, similar to C<ROW_l>.
		1923
		1924	=item $rownum = $line->beg
		1925
		1926	=item $rownum = $line->end
		1927
		1928	Return the row number of the first/last row of the line, respectively.
		1929
		1930	=item $offset = $line->offset_of ($row, $col)
		1931
		1932	Returns the character offset of the given row|col pair within the logical
		1933	line. Works for rows outside the line, too, and returns corresponding
		1934	offsets outside the string.
		1935
		1936	=item ($row, $col) = $line->coord_of ($offset)
		1937
		1938	Translates a string offset into terminal coordinates again.
		1939
		1940	=back
		1941
		1942	=cut
		1943
		1944	sub line {
		1945	my ($self, $row) = @_;
		1946
		1947	my $maxrow = $self->nrow - 1;
		1948
		1949	my ($beg, $end) = ($row, $row);
		1950
		1951	--$beg while $self->ROW_is_longer ($beg - 1);
		1952	++$end while $self->ROW_is_longer ($end) && $end < $maxrow;
		1953
		1954	bless {
		1955	term => $self,
		1956	beg => $beg,
		1957	end => $end,
		1958	ncol => $self->ncol,
		1959	len => ($end - $beg) * $self->ncol + $self->ROW_l ($end),
		1960	}, urxvt::line::
		1961	}
		1962
		1963	sub urxvt::line::t {
		1964	my ($self) = @_;
		1965
		1966	if (@_ > 1)
		1967	{
		1968	$self->{term}->ROW_t ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		1969	for $self->{beg} .. $self->{end};
		1970	}
		1971
		1972	defined wantarray &&
		1973	substr +(join "", map $self->{term}->ROW_t ($_), $self->{beg} .. $self->{end}),
		1974	0, $self->{len}
		1975	}
		1976
		1977	sub urxvt::line::r {
		1978	my ($self) = @_;
		1979
		1980	if (@_ > 1)
		1981	{
		1982	$self->{term}->ROW_r ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		1983	for $self->{beg} .. $self->{end};
		1984	}
		1985
		1986	if (defined wantarray) {
		1987	my $rend = [
		1988	map @{ $self->{term}->ROW_r ($_) }, $self->{beg} .. $self->{end}
		1989	];
		1990	$#$rend = $self->{len} - 1;
		1991	return $rend;
		1992	}
		1993
		1994	()
		1995	}
		1996
		1997	sub urxvt::line::beg { $_[0]{beg} }
		1998	sub urxvt::line::end { $_[0]{end} }
		1999	sub urxvt::line::l { $_[0]{len} }
		2000
		2001	sub urxvt::line::offset_of {
		2002	my ($self, $row, $col) = @_;
		2003
		2004	($row - $self->{beg}) * $self->{ncol} + $col
		2005	}
		2006
		2007	sub urxvt::line::coord_of {
		2008	my ($self, $offset) = @_;
		2009
		2010	use integer;
		2011
		2012	(
		2013	$offset / $self->{ncol} + $self->{beg},
		2014	$offset % $self->{ncol}
		2015	)
		2016	}
500		2017
501	=item $text = $term->special_encode $string	2018	=item $text = $term->special_encode $string
502		2019
503	Converts a perl string into the special encoding used by rxvt-unicode,	2020	Converts a perl string into the special encoding used by rxvt-unicode,
504	where one character corresponds to one screen cell. See	2021	where one character corresponds to one screen cell. See
505	C<< $term->ROW_t >> for details.	2022	C<< $term->ROW_t >> for details.
506		2023
507	=item $string = $term->special_decode $text	2024	=item $string = $term->special_decode $text
508		2025
509	Converts rxvt-unicodes text reprsentation into a perl string. See	2026	Converts rxvt-unicodes text representation into a perl string. See
510	C<< $term->ROW_t >> for details.	2027	C<< $term->ROW_t >> for details.
511		2028
		2029	=item $success = $term->grab_button ($button, $modifiermask[, $window = $term->vt])
		2030
		2031	=item $term->ungrab_button ($button, $modifiermask[, $window = $term->vt])
		2032
		2033	Register/unregister a synchronous button grab. See the XGrabButton
		2034	manpage.
		2035
		2036	=item $success = $term->grab ($eventtime[, $sync])
		2037
		2038	Calls XGrabPointer and XGrabKeyboard in asynchronous (default) or
		2039	synchronous (C<$sync> is true). Also remembers the grab timestamp.
		2040
		2041	=item $term->allow_events_async
		2042
		2043	Calls XAllowEvents with AsyncBoth for the most recent grab.
		2044
		2045	=item $term->allow_events_sync
		2046
		2047	Calls XAllowEvents with SyncBoth for the most recent grab.
		2048
		2049	=item $term->allow_events_replay
		2050
		2051	Calls XAllowEvents with both ReplayPointer and ReplayKeyboard for the most
		2052	recent grab.
		2053
		2054	=item $term->ungrab
		2055
		2056	Calls XUngrabPointer and XUngrabKeyboard for the most recent grab. Is called automatically on
		2057	evaluation errors, as it is better to lose the grab in the error case as
		2058	the session.
		2059
		2060	=item $atom = $term->XInternAtom ($atom_name[, $only_if_exists])
		2061
		2062	=item $atom_name = $term->XGetAtomName ($atom)
		2063
		2064	=item @atoms = $term->XListProperties ($window)
		2065
		2066	=item ($type,$format,$octets) = $term->XGetWindowProperty ($window, $property)
		2067
		2068	=item $term->XChangeProperty ($window, $property, $type, $format, $octets)
		2069
		2070	=item $term->XDeleteProperty ($window, $property)
		2071
		2072	=item $window = $term->DefaultRootWindow
		2073
		2074	=item $term->XReparentWindow ($window, $parent, [$x, $y])
		2075
		2076	=item $term->XMapWindow ($window)
		2077
		2078	=item $term->XUnmapWindow ($window)
		2079
		2080	=item $term->XMoveResizeWindow ($window, $x, $y, $width, $height)
		2081
		2082	=item ($x, $y, $child_window) = $term->XTranslateCoordinates ($src, $dst, $x, $y)
		2083
		2084	=item $term->XChangeInput ($window, $add_events[, $del_events])
		2085
		2086	=item $keysym = $term->XStringToKeysym ($string)
		2087
		2088	=item $string = $term->XKeysymToString ($keysym)
		2089
		2090	Various X or X-related functions. The C<$term> object only serves as
		2091	the source of the display, otherwise those functions map more-or-less
		2092	directly onto the X functions of the same name.
		2093
512	=back	2094	=back
513		2095
514	=head2 RENDITION	2096	=cut
515		2097
516	Rendition bitsets contain information about colour, font, font styles and	2098	package urxvt::popup;
517	similar information for each screen cell.
518		2099
519	The following "macros" deal with changes in rendition sets. You should	2100	=head2 The C<urxvt::popup> Class
520	never just create a bitset, you should always modify an existing one,
521	as they contain important information required for correct operation of
522	rxvt-unicode.
523		2101
524	=over 4	2102	=over 4
525		2103
526	=item $rend = urxvt::DEFAULT_RSTYLE	2104	=cut
527		2105
528	Returns the default rendition, as used when the terminal is starting up or	2106	sub add_item {
529	being reset. Useful as a base	2107	my ($self, $item) = @_;
		2108
		2109	$item->{rend}{normal} = "\x1b[0;30;47m" unless exists $item->{rend}{normal};
		2110	$item->{rend}{hover} = "\x1b[0;30;46m" unless exists $item->{rend}{hover};
		2111	$item->{rend}{active} = "\x1b[m" unless exists $item->{rend}{active};
		2112
		2113	$item->{render} ||= sub { $_[0]{text} };
		2114
		2115	push @{ $self->{item} }, $item;
		2116	}
		2117
		2118	=item $popup->add_title ($title)
		2119
		2120	Adds a non-clickable title to the popup.
		2121
		2122	=cut
		2123
		2124	sub add_title {
		2125	my ($self, $title) = @_;
		2126
		2127	$self->add_item ({
		2128	rend => { normal => "\x1b[38;5;11;44m", hover => "\x1b[38;5;11;44m", active => "\x1b[38;5;11;44m" },
		2129	text => $title,
		2130	activate => sub { },
		2131	});
		2132	}
		2133
		2134	=item $popup->add_separator ([$sepchr])
		2135
		2136	Creates a separator, optionally using the character given as C<$sepchr>.
		2137
		2138	=cut
		2139
		2140	sub add_separator {
		2141	my ($self, $sep) = @_;
		2142
		2143	$sep ||= "=";
		2144
		2145	$self->add_item ({
		2146	rend => { normal => "\x1b[0;30;47m", hover => "\x1b[0;30;47m", active => "\x1b[0;30;47m" },
		2147	text => "",
		2148	render => sub { $sep x $self->{term}->ncol },
		2149	activate => sub { },
		2150	});
		2151	}
		2152
		2153	=item $popup->add_button ($text, $cb)
		2154
		2155	Adds a clickable button to the popup. C<$cb> is called whenever it is
		2156	selected.
		2157
		2158	=cut
		2159
		2160	sub add_button {
		2161	my ($self, $text, $cb) = @_;
		2162
		2163	$self->add_item ({ type => "button", text => $text, activate => $cb});
		2164	}
		2165
		2166	=item $popup->add_toggle ($text, $initial_value, $cb)
		2167
		2168	Adds a toggle/checkbox item to the popup. The callback gets called
		2169	whenever it gets toggled, with a boolean indicating its new value as its
		2170	first argument.
		2171
		2172	=cut
		2173
		2174	sub add_toggle {
		2175	my ($self, $text, $value, $cb) = @_;
		2176
		2177	my $item; $item = {
		2178	type => "button",
		2179	text => " $text",
		2180	value => $value,
		2181	render => sub { ($_[0]{value} ? "* " : " ") . $text },
		2182	activate => sub { $cb->($_[1]{value} = !$_[1]{value}); },
		2183	};
		2184
		2185	$self->add_item ($item);
		2186	}
		2187
		2188	=item $popup->show
		2189
		2190	Displays the popup (which is initially hidden).
		2191
		2192	=cut
		2193
		2194	sub show {
		2195	my ($self) = @_;
		2196
		2197	local $urxvt::popup::self = $self;
		2198
		2199	my $env = $self->{term}->env;
		2200	# we can't hope to reproduce the locale algorithm, so nuke LC_ALL and set LC_CTYPE.
		2201	delete $env->{LC_ALL};
		2202	$env->{LC_CTYPE} = $self->{term}->locale;
		2203
		2204	my $term = urxvt::term->new (
		2205	$env, "popup",
		2206	"--perl-lib" => "", "--perl-ext-common" => "",
		2207	"-pty-fd" => -1, "-sl" => 0,
		2208	"-b" => 1, "-bd" => "grey80", "-bl", "-override-redirect",
		2209	"--transient-for" => $self->{term}->parent,
		2210	"-display" => $self->{term}->display_id,
		2211	"-pe" => "urxvt-popup",
		2212	) or die "unable to create popup window\n";
		2213
		2214	unless (delete $term->{urxvt_popup_init_done}) {
		2215	$term->ungrab;
		2216	$term->destroy;
		2217	die "unable to initialise popup window\n";
		2218	}
		2219	}
		2220
		2221	sub DESTROY {
		2222	my ($self) = @_;
		2223
		2224	delete $self->{term}{_destroy}{$self};
		2225	$self->{term}->ungrab;
		2226	}
530		2227
531	=back	2228	=back
532		2229
533	=cut	2230	=cut
		2231
		2232	package urxvt::watcher;
534		2233
535	=head2 The C<urxvt::timer> Class	2234	=head2 The C<urxvt::timer> Class
536		2235
537	This class implements timer watchers/events. Time is represented as a	2236	This class implements timer watchers/events. Time is represented as a
538	fractional number of seconds since the epoch. Example:	2237	fractional number of seconds since the epoch. Example:
539		2238
540	# create a digital clock display in upper right corner	2239	$term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
541	$term->{timer} = urxvt::timer	2240	$term->{timer} = urxvt::timer
542	->new	2241	->new
543	->start (urxvt::NOW)	2242	->interval (1)
544	->cb (sub {	2243	->cb (sub {
545	my ($timer) = @_;
546	my $time = $timer->at;
547	$timer->start ($time + 1);
548	$self->scr_overlay (-1, 0,	2244	$term->{overlay}->set (0, 0,
549	POSIX::strftime "%H:%M:%S", localtime $time);	2245	sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
550	});	2246	});
551		2247
552	=over 4	2248	=over 4
553		2249
554	=item $timer = new urxvt::timer	2250	=item $timer = new urxvt::timer
555		2251
556	Create a new timer object in stopped state.	2252	Create a new timer object in started state. It is scheduled to fire
		2253	immediately.
557		2254
558	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })	2255	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })
559		2256
560	Set the callback to be called when the timer triggers.	2257	Set the callback to be called when the timer triggers.
561		2258
562	=item $tstamp = $timer->at
563
564	Return the time this watcher will fire next.
565
566	=item $timer = $timer->set ($tstamp)	2259	=item $timer = $timer->set ($tstamp[, $interval])
567		2260
568	Set the time the event is generated to $tstamp.	2261	Set the time the event is generated to $tstamp (and optionally specifies a
		2262	new $interval).
		2263
		2264	=item $timer = $timer->interval ($interval)
		2265
		2266	By default (and when C<$interval> is C<0>), the timer will automatically
		2267	stop after it has fired once. If C<$interval> is non-zero, then the timer
		2268	is automatically rescheduled at the given intervals.
569		2269
570	=item $timer = $timer->start	2270	=item $timer = $timer->start
571		2271
572	Start the timer.	2272	Start the timer.
573		2273
574	=item $timer = $timer->start ($tstamp)	2274	=item $timer = $timer->start ($tstamp[, $interval])
575		2275
576	Set the event trigger time to C<$tstamp> and start the timer.	2276	Set the event trigger time to C<$tstamp> and start the timer. Optionally
		2277	also replaces the interval.
		2278
		2279	=item $timer = $timer->after ($delay[, $interval])
		2280
		2281	Like C<start>, but sets the expiry timer to c<urxvt::NOW + $delay>.
577		2282
578	=item $timer = $timer->stop	2283	=item $timer = $timer->stop
579		2284
580	Stop the timer.	2285	Stop the timer.
581		2286
…		…
587		2292
588	$term->{socket} = ...	2293	$term->{socket} = ...
589	$term->{iow} = urxvt::iow	2294	$term->{iow} = urxvt::iow
590	->new	2295	->new
591	->fd (fileno $term->{socket})	2296	->fd (fileno $term->{socket})
592	->events (1) # wait for read data	2297	->events (urxvt::EV_READ)
593	->start	2298	->start
594	->cb (sub {	2299	->cb (sub {
595	my ($iow, $revents) = @_;	2300	my ($iow, $revents) = @_;
596	# $revents must be 1 here, no need to check	2301	# $revents must be 1 here, no need to check
597	sysread $term->{socket}, my $buf, 8192	2302	sysread $term->{socket}, my $buf, 8192
…		…
610	Set the callback to be called when io events are triggered. C<$reventmask>	2315	Set the callback to be called when io events are triggered. C<$reventmask>
611	is a bitset as described in the C<events> method.	2316	is a bitset as described in the C<events> method.
612		2317
613	=item $iow = $iow->fd ($fd)	2318	=item $iow = $iow->fd ($fd)
614		2319
615	Set the filedescriptor (not handle) to watch.	2320	Set the file descriptor (not handle) to watch.
616		2321
617	=item $iow = $iow->events ($eventmask)	2322	=item $iow = $iow->events ($eventmask)
618		2323
619	Set the event mask to watch. Bit #0 (value C<1>) enables watching for read	2324	Set the event mask to watch. The only allowed values are
620	data, Bit #1 (value C<2>) enables watching for write data.	2325	C<urxvt::EV_READ> and C<urxvt::EV_WRITE>, which might be ORed
		2326	together, or C<urxvt::EV_NONE>.
621		2327
622	=item $iow = $iow->start	2328	=item $iow = $iow->start
623		2329
624	Start watching for requested events on the given handle.	2330	Start watching for requested events on the given handle.
625		2331
626	=item $iow = $iow->stop	2332	=item $iow = $iow->stop
627		2333
628	Stop watching for events on the given filehandle.	2334	Stop watching for events on the given file handle.
		2335
		2336	=back
		2337
		2338	=head2 The C<urxvt::iw> Class
		2339
		2340	This class implements idle watchers, that get called automatically when
		2341	the process is idle. They should return as fast as possible, after doing
		2342	some useful work.
		2343
		2344	=over 4
		2345
		2346	=item $iw = new urxvt::iw
		2347
		2348	Create a new idle watcher object in stopped state.
		2349
		2350	=item $iw = $iw->cb (sub { my ($iw) = @_; ... })
		2351
		2352	Set the callback to be called when the watcher triggers.
		2353
		2354	=item $timer = $timer->start
		2355
		2356	Start the watcher.
		2357
		2358	=item $timer = $timer->stop
		2359
		2360	Stop the watcher.
		2361
		2362	=back
		2363
		2364	=head2 The C<urxvt::pw> Class
		2365
		2366	This class implements process watchers. They create an event whenever a
		2367	process exits, after which they stop automatically.
		2368
		2369	my $pid = fork;
		2370	...
		2371	$term->{pw} = urxvt::pw
		2372	->new
		2373	->start ($pid)
		2374	->cb (sub {
		2375	my ($pw, $exit_status) = @_;
		2376	...
		2377	});
		2378
		2379	=over 4
		2380
		2381	=item $pw = new urxvt::pw
		2382
		2383	Create a new process watcher in stopped state.
		2384
		2385	=item $pw = $pw->cb (sub { my ($pw, $exit_status) = @_; ... })
		2386
		2387	Set the callback to be called when the timer triggers.
		2388
		2389	=item $pw = $timer->start ($pid)
		2390
		2391	Tells the watcher to start watching for process C<$pid>.
		2392
		2393	=item $pw = $pw->stop
		2394
		2395	Stop the watcher.
629		2396
630	=back	2397	=back
631		2398
632	=head1 ENVIRONMENT	2399	=head1 ENVIRONMENT
633		2400
…		…
636	This variable controls the verbosity level of the perl extension. Higher	2403	This variable controls the verbosity level of the perl extension. Higher
637	numbers indicate more verbose output.	2404	numbers indicate more verbose output.
638		2405
639	=over 4	2406	=over 4
640		2407
641	=item 0 - only fatal messages	2408	=item == 0 - fatal messages
642		2409
643	=item 3 - script loading and management	2410	=item >= 3 - script loading and management
644		2411
645	=item 10 - all events received	2412	=item >=10 - all called hooks
		2413
		2414	=item >=11 - hook return values
646		2415
647	=back	2416	=back
648		2417
649	=head1 AUTHOR	2418	=head1 AUTHOR
650		2419
651	Marc Lehmann <pcg@goof.com>	2420	Marc Lehmann <schmorp@schmorp.de>
652	http://software.schmorp.de/pkg/rxvt-unicode	2421	http://software.schmorp.de/pkg/rxvt-unicode
653		2422
654	=cut	2423	=cut
655		2424
656	1	2425	1
		2426
		2427	# vim: sw=3:

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