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Revision 1.18 by root, Tue Jan 3 02:01:27 2006 UTC vs.
Revision 1.254 by sf-exg, Tue Mar 17 09:23:08 2015 UTC

1	=encoding utf8	1	=encoding utf8
2		2
3	=head1 NAME	3	=head1 NAME
4		4
5	@@RXVT_NAME@@perl - rxvt-unicode's embedded perl interpreter	5	urxvtperl - rxvt-unicode's embedded perl interpreter
6		6
7	=head1 SYNOPSIS	7	=head1 SYNOPSIS
8		8
9	# create a file grab_test in $HOME:	9	# create a file grab_test in $HOME:
10		10
11	sub on_sel_grab {	11	sub on_sel_grab {
12	warn "you selected ", $_[0]->selection;	12	warn "you selected ", $_[0]->selection;
13	()	13	()
14	}	14	}
15		15
16	# start a @@RXVT_NAME@@ using it:	16	# start a urxvt using it:
17		17
18	@@RXVT_NAME@@ --perl-lib $HOME -pe grab_test	18	urxvt --perl-lib $HOME -pe grab_test
19		19
20	=head1 DESCRIPTION	20	=head1 DESCRIPTION
21		21
22	Everytime a terminal object gets created, scripts specified via the	22	Every time a terminal object gets created, extension scripts specified via
23	C<perl> resource are loaded and associated with it.	23	the C<perl> resource are loaded and associated with it.
24		24
25	Scripts are compiled in a 'use strict' and 'use utf8' environment, and	25	Scripts are compiled in a 'use strict "vars"' and 'use utf8' environment, and
26	thus must be encoded as UTF-8.	26	thus must be encoded as UTF-8.
27		27
28	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 urxvtd, where
29	scripts will be shared (but not enabled) for all terminals.	29	scripts will be shared (but not enabled) for all terminals.
30		30
31	=head2 Prepackaged Extensions	31	You can disable the embedded perl interpreter by setting both "perl-ext"
		32	and "perl-ext-common" resources to the empty string.
32		33
33	This section describes the extensiosn delivered with this version. You can	34	=head1 PREPACKAGED EXTENSIONS
34	find them in F<@@RXVT_LIBDIR@@/urxvt/perl/>.	35
		36	A number of extensions are delivered with this release. You can find them
		37	in F<< <libdir>/urxvt/perl/ >>, and the documentation can be viewed using
		38	F<< man urxvt-<EXTENSIONNAME> >>.
35		39
36	You can activate them like this:	40	You can activate them like this:
37		41
38	@@RXVT_NAME@@ -pe <extensionname>	42	urxvt -pe <extensionname>
39		43
40	=over 4	44	Or by adding them to the resource for extensions loaded by default:
41		45
42	=item selection	46	URxvt.perl-ext-common: default,selection-autotransform
43		47
44	Miscellaneous selection modifications.	48	Extensions may add additional resources and C<actions>, i.e., methods
		49	which can be bound to a key and invoked by the user. An extension can
		50	define the resources it support using so called META comments,
		51	described below. Similarly to builtin resources, extension resources
		52	can also be specified on the command line as long options (with C<.>
		53	replaced by C<->), in which case the corresponding extension is loaded
		54	automatically. For this to work the extension B<must> define META
		55	comments for its resources.
45		56
46	=over 4	57	=head1 API DOCUMENTATION
47
48	=item rot13
49
50	Rot-13 the selection when activated. Used via keyboard trigger:
51
52	URxvt.keysym.C-M-r: perl:selection:rot13
53
54	=back
55
56	=item digital-clock
57
58	Displays a very simple digital clock in the upper right corner of the
59	window. Illustrates overwriting the refresh callbacks to create your own
60	overlays or changes.
61
62	=item simple-overlay-clock
63
64	Displays a digital clock using the built-in overlay (colourful, useless).
65
66	=back
67		58
68	=head2 General API Considerations	59	=head2 General API Considerations
69		60
70	All objects (such as terminals, time watchers etc.) are typical	61	All objects (such as terminals, time watchers etc.) are typical
71	reference-to-hash objects. The hash can be used to store anything you	62	reference-to-hash objects. The hash can be used to store anything you
72	like. All members starting with an underscore (such as C<_ptr> or	63	like. All members starting with an underscore (such as C<_ptr> or
73	C<_hook>) are reserved for internal uses and must not be accessed or	64	C<_hook>) are reserved for internal uses and B<MUST NOT> be accessed or
74	modified).	65	modified).
75		66
76	When objects are destroyed on the C++ side, the perl object hashes are	67	When objects are destroyed on the C++ side, the perl object hashes are
77	emptied, so its best to store related objects such as time watchers and	68	emptied, so its best to store related objects such as time watchers and
78	the like inside the terminal object so they get destroyed as soon as the	69	the like inside the terminal object so they get destroyed as soon as the
79	terminal is destroyed.	70	terminal is destroyed.
80		71
		72	Argument names also often indicate the type of a parameter. Here are some
		73	hints on what they mean:
		74
		75	=over 4
		76
		77	=item $text
		78
		79	Rxvt-unicode's special way of encoding text, where one "unicode" character
		80	always represents one screen cell. See L<ROW_t> for a discussion of this format.
		81
		82	=item $string
		83
		84	A perl text string, with an emphasis on I<text>. It can store all unicode
		85	characters and is to be distinguished with text encoded in a specific
		86	encoding (often locale-specific) and binary data.
		87
		88	=item $octets
		89
		90	Either binary data or - more common - a text string encoded in a
		91	locale-specific way.
		92
		93	=item $keysym
		94
		95	an integer that is a valid X11 keysym code. You can convert a string
		96	into a keysym and viceversa by using C<XStringToKeysym> and
		97	C<XKeysymToString>.
		98
		99	=back
		100
		101	=head2 Extension Objects
		102
		103	Every perl extension is a perl class. A separate perl object is created
		104	for each terminal, and each terminal has its own set of extension objects,
		105	which are passed as the first parameter to hooks. So extensions can use
		106	their C<$self> object without having to think about clashes with other
		107	extensions or other terminals, with the exception of methods and members
		108	that begin with an underscore character C<_>: these are reserved for
		109	internal use.
		110
		111	Although it isn't a C<urxvt::term> object, you can call all methods of the
		112	C<urxvt::term> class on this object.
		113
		114	Additional methods only supported for extension objects are described in
		115	the C<urxvt::extension> section below.
		116
		117	=head2 META comments
		118
		119	Rxvt-unicode recognizes special meta comments in extensions that define
		120	different types of metadata.
		121
		122	Currently, it recognises only one such comment:
		123
		124	=over 4
		125
		126	=item #:META:RESOURCE:name:type:desc
		127
		128	The RESOURCE comment defines a resource used by the extension, where
		129	C<name> is the resource name, C<type> is the resource type, C<boolean>
		130	or C<string>, and C<desc> is the resource description.
		131
		132	=back
		133
81	=head2 Hooks	134	=head2 Hooks
82		135
83	The following subroutines can be declared in loaded scripts, and will be called	136	The following subroutines can be declared in extension files, and will be
84	whenever the relevant event happens.	137	called whenever the relevant event happens.
85		138
86	All of them must return a boolean value. If it is true, then the event	139	The first argument passed to them is an extension object as described in
87	counts as being I<consumed>, and the invocation of other hooks is skipped,	140	the in the C<Extension Objects> section.
		141
		142	B<All> of these hooks must return a boolean value. If any of the called
		143	hooks returns true, then the event counts as being I<consumed>, and the
88	and the relevant action might not be carried out by the C++ code.	144	relevant action might not be carried out by the C++ code.
89		145
90	When in doubt, return a false value (preferably C<()>).	146	I<< When in doubt, return a false value (preferably C<()>). >>
91		147
92	=over 4	148	=over 4
93		149
94	=item on_init $term	150	=item on_init $term
95		151
96	Called after a new terminal object has been initialized, but before	152	Called after a new terminal object has been initialized, but before
97	windows are created or the command gets run.	153	windows are created or the command gets run. Most methods are unsafe to
		154	call or deliver senseless data, as terminal size and other characteristics
		155	have not yet been determined. You can safely query and change resources
		156	and options, though. For many purposes the C<on_start> hook is a better
		157	place.
		158
		159	=item on_start $term
		160
		161	Called at the very end of initialisation of a new terminal, just before
		162	trying to map (display) the toplevel and returning to the main loop.
		163
		164	=item on_destroy $term
		165
		166	Called whenever something tries to destroy terminal, when the terminal is
		167	still fully functional (not for long, though).
98		168
99	=item on_reset $term	169	=item on_reset $term
100		170
101	Called after the screen is "reset" for any reason, such as resizing or	171	Called after the screen is "reset" for any reason, such as resizing or
102	control sequences. Here is where you can react on changes to size-related	172	control sequences. Here is where you can react on changes to size-related
103	variables.	173	variables.
104		174
105	=item on_start $term	175	=item on_child_start $term, $pid
106		176
107	Called at the very end of initialisation of a new terminal, just before	177	Called just after the child process has been C<fork>ed.
108	returning to the mainloop.	178
		179	=item on_child_exit $term, $status
		180
		181	Called just after the child process has exited. C<$status> is the status
		182	from C<waitpid>.
109		183
110	=item on_sel_make $term, $eventtime	184	=item on_sel_make $term, $eventtime
111		185
112	Called whenever a selection has been made by the user, but before the	186	Called whenever a selection has been made by the user, but before the
113	selection text is copied, so changes to the beginning, end or type of the	187	selection text is copied, so changes to the beginning, end or type of the
…		…
120		194
121	Called whenever a selection has been copied, but before the selection is	195	Called whenever a selection has been copied, but before the selection is
122	requested from the server. The selection text can be queried and changed	196	requested from the server. The selection text can be queried and changed
123	by calling C<< $term->selection >>.	197	by calling C<< $term->selection >>.
124		198
125	Returning a true value aborts selection grabbing. It will still be hilighted.	199	Returning a true value aborts selection grabbing. It will still be highlighted.
126		200
127	=item on_focus_in $term	201	=item on_sel_extend $term
128		202
129	Called whenever the window gets the keyboard focus, before urxvt does	203	Called whenever the user tries to extend the selection (e.g. with a double
130	focus in processing.	204	click) and is either supposed to return false (normal operation), or
		205	should extend the selection itself and return true to suppress the built-in
		206	processing. This can happen multiple times, as long as the callback
		207	returns true, it will be called on every further click by the user and is
		208	supposed to enlarge the selection more and more, if possible.
131		209
132	=item on_focus_out $term	210	See the F<selection> example extension.
133
134	Called wheneever the window loses keyboard focus, before urxvt does focus
135	out processing.
136		211
137	=item on_view_change $term, $offset	212	=item on_view_change $term, $offset
138		213
139	Called whenever the view offset changes, i..e the user or program	214	Called whenever the view offset changes, i.e. the user or program
140	scrolls. Offset C<0> means display the normal terminal, positive values	215	scrolls. Offset C<0> means display the normal terminal, positive values
141	show this many lines of scrollback.	216	show this many lines of scrollback.
142		217
143	=item on_scroll_back $term, $lines, $saved	218	=item on_scroll_back $term, $lines, $saved
144		219
…		…
148		223
149	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,	224	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,
150	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total	225	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total
151	number of lines that will be in the scrollback buffer.	226	number of lines that will be in the scrollback buffer.
152		227
153	=item on_tty_activity $term *NYI*	228	=item on_osc_seq $term, $op, $args, $resp
154		229
155	Called whenever the program(s) running in the urxvt window send output.	230	Called on every OSC sequence and can be used to suppress it or modify its
		231	behaviour. The default should be to return an empty list. A true value
		232	suppresses execution of the request completely. Make sure you don't get
		233	confused by recursive invocations when you output an OSC sequence within
		234	this callback.
		235
		236	C<on_osc_seq_perl> should be used for new behaviour.
		237
		238	=item on_osc_seq_perl $term, $args, $resp
		239
		240	Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =
		241	operating system command) is processed. Cursor position and other state
		242	information is up-to-date when this happens. For interoperability, the
		243	string should start with the extension name (sans -osc) and a semicolon,
		244	to distinguish it from commands for other extensions, and this might be
		245	enforced in the future.
		246
		247	For example, C<overlay-osc> uses this:
		248
		249	sub on_osc_seq_perl {
		250	my ($self, $osc, $resp) = @_;
		251
		252	return unless $osc =~ s/^overlay;//;
		253
		254	... process remaining $osc string
		255	}
		256
		257	Be careful not ever to trust (in a security sense) the data you receive,
		258	as its source can not easily be controlled (e-mail content, messages from
		259	other users on the same system etc.).
		260
		261	For responses, C<$resp> contains the end-of-args separator used by the
		262	sender.
		263
		264	=item on_add_lines $term, $string
		265
		266	Called whenever text is about to be output, with the text as argument. You
		267	can filter/change and output the text yourself by returning a true value
		268	and calling C<< $term->scr_add_lines >> yourself. Please note that this
		269	might be very slow, however, as your hook is called for B<all> text being
		270	output.
		271
		272	=item on_tt_write $term, $octets
		273
		274	Called whenever some data is written to the tty/pty and can be used to
		275	suppress or filter tty input.
		276
		277	=item on_tt_paste $term, $octets
		278
		279	Called whenever text is about to be pasted, with the text as argument. You
		280	can filter/change and paste the text yourself by returning a true value
		281	and calling C<< $term->tt_paste >> yourself. C<$octets> is
		282	locale-encoded.
		283
		284	=item on_line_update $term, $row
		285
		286	Called whenever a line was updated or changed. Can be used to filter
		287	screen output (e.g. underline urls or other useless stuff). Only lines
		288	that are being shown will be filtered, and, due to performance reasons,
		289	not always immediately.
		290
		291	The row number is always the topmost row of the line if the line spans
		292	multiple rows.
		293
		294	Please note that, if you change the line, then the hook might get called
		295	later with the already-modified line (e.g. if unrelated parts change), so
		296	you cannot just toggle rendition bits, but only set them.
156		297
157	=item on_refresh_begin $term	298	=item on_refresh_begin $term
158		299
159	Called just before the screen gets redrawn. Can be used for overlay	300	Called just before the screen gets redrawn. Can be used for overlay or
160	or similar effects by modify terminal contents in refresh_begin, and	301	similar effects by modifying the terminal contents in refresh_begin, and
161	restoring them in refresh_end. The built-in overlay and selection display	302	restoring them in refresh_end. The built-in overlay and selection display
162	code is run after this hook, and takes precedence.	303	code is run after this hook, and takes precedence.
163		304
164	=item on_refresh_end $term	305	=item on_refresh_end $term
165		306
166	Called just after the screen gets redrawn. See C<on_refresh_begin>.	307	Called just after the screen gets redrawn. See C<on_refresh_begin>.
167		308
		309	=item on_action $term, $string
		310
		311	Called whenever an action is invoked for the corresponding extension
		312	(e.g. via a C<extension:string> builtin action bound to a key, see
		313	description of the B<keysym> resource in the urxvt(1) manpage). The
		314	event is simply the action string. Note that an action event is always
		315	associated to a single extension.
		316
168	=item on_keyboard_command $term, $string	317	=item on_user_command $term, $string *DEPRECATED*
169		318
170	Called whenever the user presses a key combination that has a	319	Called whenever a user-configured event is being activated (e.g. via
171	C<perl:string> action bound to it (see description of the B<keysym>	320	a C<perl:string> action bound to a key, see description of the B<keysym>
172	resource in the @@RXVT_NAME@@(1) manpage).	321	resource in the urxvt(1) manpage).
		322
		323	The event is simply the action string. This interface is going away in
		324	preference to the C<on_action> hook.
		325
		326	=item on_resize_all_windows $term, $new_width, $new_height
		327
		328	Called just after the new window size has been calculated, but before
		329	windows are actually being resized or hints are being set. If this hook
		330	returns a true value, setting of the window hints is being skipped.
		331
		332	=item on_x_event $term, $event
		333
		334	Called on every X event received on the vt window (and possibly other
		335	windows). Should only be used as a last resort. Most event structure
		336	members are not passed.
		337
		338	=item on_root_event $term, $event
		339
		340	Like C<on_x_event>, but is called for events on the root window.
		341
		342	=item on_focus_in $term
		343
		344	Called whenever the window gets the keyboard focus, before rxvt-unicode
		345	does focus in processing.
		346
		347	=item on_focus_out $term
		348
		349	Called whenever the window loses keyboard focus, before rxvt-unicode does
		350	focus out processing.
		351
		352	=item on_configure_notify $term, $event
		353
		354	=item on_property_notify $term, $event
		355
		356	=item on_key_press $term, $event, $keysym, $octets
		357
		358	=item on_key_release $term, $event, $keysym
		359
		360	=item on_button_press $term, $event
		361
		362	=item on_button_release $term, $event
		363
		364	=item on_motion_notify $term, $event
		365
		366	=item on_map_notify $term, $event
		367
		368	=item on_unmap_notify $term, $event
		369
		370	Called whenever the corresponding X event is received for the terminal. If
		371	the hook returns true, then the event will be ignored by rxvt-unicode.
		372
		373	The event is a hash with most values as named by Xlib (see the XEvent
		374	manpage), with the additional members C<row> and C<col>, which are the
		375	(real, not screen-based) row and column under the mouse cursor.
		376
		377	C<on_key_press> additionally receives the string rxvt-unicode would
		378	output, if any, in locale-specific encoding.
		379
		380	=item on_client_message $term, $event
		381
		382	=item on_wm_protocols $term, $event
		383
		384	=item on_wm_delete_window $term, $event
		385
		386	Called when various types of ClientMessage events are received (all with
		387	format=32, WM_PROTOCOLS or WM_PROTOCOLS:WM_DELETE_WINDOW).
		388
		389	=item on_bell $term
		390
		391	Called on receipt of a bell character.
173		392
174	=back	393	=back
175		394
		395	=cut
		396
		397	package urxvt;
		398
		399	use utf8;
		400	use strict 'vars';
		401	use Carp ();
		402	use Scalar::Util ();
		403	use List::Util ();
		404
		405	our $VERSION = 1;
		406	our $TERM;
		407	our @TERM_INIT; # should go, prevents async I/O etc.
		408	our @TERM_EXT; # should go, prevents async I/O etc.
		409	our @HOOKNAME;
		410	our %HOOKTYPE = map +($HOOKNAME[$_] => $_), 0..$#HOOKNAME;
		411	our %OPTION;
		412
		413	our $LIBDIR;
		414	our $RESNAME;
		415	our $RESCLASS;
		416	our $RXVTNAME;
		417
		418	our $NOCHAR = chr 0xffff;
		419
		420	=head2 Variables in the C<urxvt> Package
		421
		422	=over 4
		423
		424	=item $urxvt::LIBDIR
		425
		426	The rxvt-unicode library directory, where, among other things, the perl
		427	modules and scripts are stored.
		428
		429	=item $urxvt::RESCLASS, $urxvt::RESCLASS
		430
		431	The resource class and name rxvt-unicode uses to look up X resources.
		432
		433	=item $urxvt::RXVTNAME
		434
		435	The basename of the installed binaries, usually C<urxvt>.
		436
		437	=item $urxvt::TERM
		438
		439	The current terminal. This variable stores the current C<urxvt::term>
		440	object, whenever a callback/hook is executing.
		441
		442	=item @urxvt::TERM_INIT
		443
		444	All code references in this array will be called as methods of the next newly
		445	created C<urxvt::term> object (during the C<on_init> phase). The array
		446	gets cleared before the code references that were in it are being executed,
		447	so references can push themselves onto it again if they so desire.
		448
		449	This complements to the perl-eval command line option, but gets executed
		450	first.
		451
		452	=item @urxvt::TERM_EXT
		453
		454	Works similar to C<@TERM_INIT>, but contains perl package/class names, which
		455	get registered as normal extensions after calling the hooks in C<@TERM_INIT>
		456	but before other extensions. Gets cleared just like C<@TERM_INIT>.
		457
		458	=back
		459
176	=head2 Functions in the C<urxvt> Package	460	=head2 Functions in the C<urxvt> Package
177		461
178	=over 4	462	=over 4
179		463
180	=item urxvt::fatal $errormessage	464	=item urxvt::fatal $errormessage
181		465
182	Fatally aborts execution with the given error message. Avoid at all	466	Fatally aborts execution with the given error message (which should
183	costs! The only time this is acceptable is when the terminal process	467	include a trailing newline). Avoid at all costs! The only time this
184	starts up.	468	is acceptable (and useful) is in the init hook, where it prevents the
		469	terminal from starting up.
185		470
186	=item urxvt::warn $string	471	=item urxvt::warn $string
187		472
188	Calls C<rxvt_warn> with the given string which should not include a	473	Calls C<rxvt_warn> with the given string which should include a trailing
189	newline. The module also overwrites the C<warn> builtin with a function	474	newline. The module also overwrites the C<warn> builtin with a function
190	that calls this function.	475	that calls this function.
191		476
192	Using this function has the advantage that its output ends up in the	477	Using this function has the advantage that its output ends up in the
193	correct place, e.g. on stderr of the connecting urxvtc client.	478	correct place, e.g. on stderr of the connecting urxvtc client.
194		479
		480	Messages have a size limit of 1023 bytes currently.
		481
		482	=item @terms = urxvt::termlist
		483
		484	Returns all urxvt::term objects that exist in this process, regardless of
		485	whether they are started, being destroyed etc., so be careful. Only term
		486	objects that have perl extensions attached will be returned (because there
		487	is no urxvt::term object associated with others).
		488
195	=item $time = urxvt::NOW	489	=item $time = urxvt::NOW
196		490
197	Returns the "current time" (as per the event loop).	491	Returns the "current time" (as per the event loop).
		492
		493	=item urxvt::CurrentTime
		494
		495	=item urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,
		496	Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,
		497	Button4Mask, Button5Mask, AnyModifier
		498
		499	=item urxvt::NoEventMask, KeyPressMask, KeyReleaseMask,
		500	ButtonPressMask, ButtonReleaseMask, EnterWindowMask, LeaveWindowMask,
		501	PointerMotionMask, PointerMotionHintMask, Button1MotionMask, Button2MotionMask,
		502	Button3MotionMask, Button4MotionMask, Button5MotionMask, ButtonMotionMask,
		503	KeymapStateMask, ExposureMask, VisibilityChangeMask, StructureNotifyMask,
		504	ResizeRedirectMask, SubstructureNotifyMask, SubstructureRedirectMask,
		505	FocusChangeMask, PropertyChangeMask, ColormapChangeMask, OwnerGrabButtonMask
		506
		507	=item urxvt::KeyPress, KeyRelease, ButtonPress, ButtonRelease, MotionNotify,
		508	EnterNotify, LeaveNotify, FocusIn, FocusOut, KeymapNotify, Expose,
		509	GraphicsExpose, NoExpose, VisibilityNotify, CreateNotify, DestroyNotify,
		510	UnmapNotify, MapNotify, MapRequest, ReparentNotify, ConfigureNotify,
		511	ConfigureRequest, GravityNotify, ResizeRequest, CirculateNotify,
		512	CirculateRequest, PropertyNotify, SelectionClear, SelectionRequest,
		513	SelectionNotify, ColormapNotify, ClientMessage, MappingNotify
		514
		515	Various constants for use in X calls and event processing.
		516
		517	=back
198		518
199	=head2 RENDITION	519	=head2 RENDITION
200		520
201	Rendition bitsets contain information about colour, font, font styles and	521	Rendition bitsets contain information about colour, font, font styles and
202	similar information for each screen cell.	522	similar information for each screen cell.
…		…
215		535
216	=item $rend = urxvt::OVERLAY_RSTYLE	536	=item $rend = urxvt::OVERLAY_RSTYLE
217		537
218	Return the rendition mask used for overlays by default.	538	Return the rendition mask used for overlays by default.
219		539
220	=item $rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline	540	=item $rendbit = urxvt::RS_Bold, urxvt::RS_Italic, urxvt::RS_Blink,
		541	urxvt::RS_RVid, urxvt::RS_Uline
221		542
222	Return the bit that enabled bold, italic, blink, reverse-video and	543	Return the bit that enabled bold, italic, blink, reverse-video and
223	underline, respectively. To enable such a style, just or it onto the	544	underline, respectively. To enable such a style, just logically OR it into
224	bitset.	545	the bitset.
225		546
226	=item $foreground = urxvt::GET_BASEFG $rend	547	=item $foreground = urxvt::GET_BASEFG $rend
227		548
228	=item $background = urxvt::GET_BASEBG $rend	549	=item $background = urxvt::GET_BASEBG $rend
229		550
230	Return the foreground/background colour index, respectively.	551	Return the foreground/background colour index, respectively.
231		552
232	=item $rend = urxvt::SET_FGCOLOR ($rend, $new_colour)	553	=item $rend = urxvt::SET_FGCOLOR $rend, $new_colour
233		554
234	=item $rend = urxvt::SET_BGCOLOR ($rend, $new_colour)	555	=item $rend = urxvt::SET_BGCOLOR $rend, $new_colour
		556
		557	=item $rend = urxvt::SET_COLOR $rend, $new_fg, $new_bg
235		558
236	Replace the foreground/background colour in the rendition mask with the	559	Replace the foreground/background colour in the rendition mask with the
237	specified one.	560	specified one.
238		561
		562	=item $value = urxvt::GET_CUSTOM $rend
		563
		564	Return the "custom" value: Every rendition has 5 bits for use by
		565	extensions. They can be set and changed as you like and are initially
		566	zero.
		567
		568	=item $rend = urxvt::SET_CUSTOM $rend, $new_value
		569
		570	Change the custom value.
		571
239	=back	572	=back
240		573
241	=cut	574	=cut
242		575
243	package urxvt;
244
245	use strict;
246
247	our $term;
248	our @HOOKNAME;
249	our $LIBDIR;
250
251	BEGIN {	576	BEGIN {
252	urxvt->bootstrap;
253
254	# overwrite perl's warn	577	# overwrite perl's warn
255	*CORE::GLOBAL::warn = sub {	578	*CORE::GLOBAL::warn = sub {
256	my $msg = join "", @_;	579	my $msg = join "", @_;
257	$msg .= "\n"	580	$msg .= "\n"
258	unless $msg =~ /\n$/;	581	unless $msg =~ /\n$/;
259	urxvt::warn ($msg);	582	urxvt::warn ($msg);
260	};	583	};
261	}	584	}
262		585
263	my @hook_count;	586	no warnings 'utf8';
		587
		588	sub parse_resource {
		589	my ($term, $name, $isarg, $longopt, $flag, $value) = @_;
		590
		591	$term->scan_extensions;
		592
		593	my $r = $term->{meta}{resource};
		594	keys %$r; # reset iterator
		595	while (my ($k, $v) = each %$r) {
		596	my $pattern = $k;
		597	$pattern =~ y/./-/ if $isarg;
		598	my $prefix = $name;
		599	my $suffix;
		600	if ($pattern =~ /\-$/) {
		601	$prefix = substr $name, 0, length $pattern;
		602	$suffix = substr $name, length $pattern;
		603	}
		604	if ($pattern eq $prefix) {
		605	$name = "$urxvt::RESCLASS.$k$suffix";
		606
		607	push @{ $term->{perl_ext_3} }, $v->[0];
		608
		609	if ($v->[1] eq "boolean") {
		610	$term->put_option_db ($name, $flag ? "true" : "false");
		611	return 1;
		612	} else {
		613	$term->put_option_db ($name, $value);
		614	return 1 + 2;
		615	}
		616	}
		617	}
		618
		619	0
		620	}
		621
		622	sub usage {
		623	my ($term, $usage_type) = @_;
		624
		625	$term->scan_extensions;
		626
		627	my $r = $term->{meta}{resource};
		628
		629	for my $pattern (sort keys %$r) {
		630	my ($ext, $type, $desc) = @{ $r->{$pattern} };
		631
		632	$desc .= " (-pe $ext)";
		633
		634	if ($usage_type == 1) {
		635	$pattern =~ y/./-/;
		636	$pattern =~ s/-$/-.../g;
		637
		638	if ($type eq "boolean") {
		639	urxvt::log sprintf " -%-30s %s\n", "/+$pattern", $desc;
		640	} else {
		641	urxvt::log sprintf " -%-30s %s\n", "$pattern $type", $desc;
		642	}
		643	} else {
		644	$pattern =~ s/\.$/.*/g;
		645	urxvt::log sprintf " %-31s %s\n", "$pattern:", $type;
		646	}
		647	}
		648	}
		649
264	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};	650	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};
265		651
266	sub verbose {	652	sub verbose {
267	my ($level, $msg) = @_;	653	my ($level, $msg) = @_;
268	warn "$msg\n" if $level <= $verbosity;	654	warn "$msg\n" if $level <= $verbosity;
269	}	655	}
270		656
271	# find on_xxx subs in the package and register them	657	my %extension_pkg;
272	# as hooks
273	sub register_package($) {
274	my ($pkg) = @_;
275
276	for my $htype (0.. $#HOOKNAME) {
277	my $name = $HOOKNAME[$htype];
278
279	my $ref = $pkg->can ("on_" . lc $name)
280	or next;
281
282	$term->{_hook}[$htype]{$ref*1} = $ref;
283	$hook_count[$htype]++
284	or set_should_invoke $htype, 1;
285	}
286	}
287
288	my $script_pkg = "script0000";
289	my %script_pkg;
290		658
291	# load a single script into its own package, once only	659	# load a single script into its own package, once only
292	sub script_package($) {	660	sub extension_package($) {
293	my ($path) = @_;	661	my ($path) = @_;
294		662
295	$script_pkg{$path} ||= do {	663	$extension_pkg{$path} ||= do {
296	my $pkg = "urxvt::" . ($script_pkg++);	664	$path =~ /([^\/\\]+)$/;
		665	my $pkg = $1;
		666	$pkg =~ s/[^[:word:]]/_/g;
		667	$pkg = "urxvt::ext::$pkg";
297		668
298	verbose 3, "loading script '$path' into package '$pkg'";	669	verbose 3, "loading extension '$path' into package '$pkg'";
		670
		671	(${"$pkg\::_NAME"} = $path) =~ s/^.*[\\\/]//; # hackish
299		672
300	open my $fh, "<:raw", $path	673	open my $fh, "<:raw", $path
301	or die "$path: $!";	674	or die "$path: $!";
302		675
303	my $source = "package $pkg; use strict; use utf8;\n"	676	my $source =
		677	"package $pkg; use strict 'vars'; use utf8; no warnings 'utf8';\n"
304	. "#line 1 \"$path\"\n{\n"	678	. "#line 1 \"$path\"\n{\n"
305	. (do { local $/; <$fh> })	679	. (do { local $/; <$fh> })
306	. "\n};\n1";	680	. "\n};\n1";
307		681
		682	eval $source
308	eval $source or die "$path: $@";	683	or die "$path: $@";
309		684
310	$pkg	685	$pkg
311	}	686	}
312	}	687	}
313		688
		689	our $retval; # return value for urxvt
		690
314	# called by the rxvt core	691	# called by the rxvt core
315	sub invoke {	692	sub invoke {
316	local $term = shift;	693	local $TERM = shift;
317	my $htype = shift;	694	my $htype = shift;
318		695
319	if ($htype == 0) { # INIT	696	if ($htype == HOOK_INIT) {
320	my @dirs = ((split /:/, $term->resource ("perl_lib")), "$LIBDIR/perl");	697	my @dirs = $TERM->perl_libdirs;
321		698
322	for my $ext (split /:/, $term->resource ("perl_ext")) {	699	$TERM->scan_extensions;
		700
		701	my %ext_arg;
		702
		703	{
		704	my @init = @TERM_INIT;
		705	@TERM_INIT = ();
		706	$_->($TERM) for @init;
		707	my @pkg = @TERM_EXT;
		708	@TERM_EXT = ();
		709	$TERM->register_package ($_) for @pkg;
		710	}
		711
		712	for (
		713	(grep $_, map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2),
		714	@{ delete $TERM->{perl_ext_3} }
		715	) {
		716	if ($_ eq "default") {
		717
		718	$ext_arg{$_} = []
		719	for qw(selection option-popup selection-popup readline searchable-scrollback);
		720
		721	for ($TERM->_keysym_resources) {
		722	next if /^(?:string|command|builtin|builtin-string|perl)/;
		723	next unless /^([A-Za-z0-9_\-]+):/;
		724
		725	my $ext = $1;
		726
		727	$ext_arg{$ext} = [];
		728	}
		729
		730	} elsif (/^-(.*)$/) {
		731	delete $ext_arg{$1};
		732
		733	} elsif (/^([^<]+)<(.*)>$/) {
		734	push @{ $ext_arg{$1} }, $2;
		735
		736	} else {
		737	$ext_arg{$_} ||= [];
		738	}
		739	}
		740
		741	for my $ext (sort keys %ext_arg) {
323	my @files = grep -f $_, map "$_/$ext", @dirs;	742	my @files = grep -f $_, map "$_/$ext", @dirs;
324		743
325	if (@files) {	744	if (@files) {
326	register_package script_package $files[0];	745	$TERM->register_package (extension_package $files[0], $ext_arg{$ext});
327	} else {	746	} else {
328	warn "perl extension '$ext' not found in perl library search path\n";	747	warn "perl extension '$ext' not found in perl library search path\n";
329	}	748	}
330	}	749	}
331		750
332	} elsif ($htype == 1) { # DESTROY	751	eval "#line 1 \"--perl-eval resource/argument\"\n" . $TERM->resource ("perl_eval");
333	if (my $hook = $term->{_hook}) {	752	warn $@ if $@;
334	for my $htype (0..$#$hook) {	753	}
335	$hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} }	754
336	or set_should_invoke $htype, 0;	755	$retval = undef;
		756
		757	if (my $cb = $TERM->{_hook}[$htype]) {
		758	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
		759	if $verbosity >= 10;
		760
		761	if ($htype == HOOK_ACTION) {
		762	# this hook is only sent to the extension with the name
		763	# matching the first arg
		764	my $pkg = shift;
		765	$pkg =~ y/-/_/;
		766	$pkg = "urxvt::ext::$pkg";
		767
		768	$cb = $cb->{$pkg}
		769	or return undef; #TODO: maybe warn user?
		770
		771	$cb = { $pkg => $cb };
		772	}
		773
		774	for my $pkg (keys %$cb) {
		775	my $retval_ = eval { $cb->{$pkg}->($TERM->{_pkg}{$pkg} || $TERM, @_) };
		776	$retval ||= $retval_;
		777
		778	if ($@) {
		779	$TERM->ungrab; # better to lose the grab than the session
		780	warn $@;
		781	}
		782	}
		783
		784	verbose 11, "$HOOKNAME[$htype] returning <$retval>"
		785	if $verbosity >= 11;
		786	}
		787
		788	if ($htype == HOOK_DESTROY) {
		789	# clear package objects
		790	%$_ = () for values %{ $TERM->{_pkg} };
		791
		792	# clear package
		793	%$TERM = ();
		794	}
		795
		796	$retval
		797	}
		798
		799	sub SET_COLOR($$$) {
		800	SET_BGCOLOR (SET_FGCOLOR ($_[0], $_[1]), $_[2])
		801	}
		802
		803	sub rend2mask {
		804	no strict 'refs';
		805	my ($str, $mask) = (@_, 0);
		806	my %color = ( fg => undef, bg => undef );
		807	my @failed;
		808	for my $spec ( split /\s+/, $str ) {
		809	if ( $spec =~ /^([fb]g)[_:-]?(\d+)/i ) {
		810	$color{lc($1)} = $2;
		811	} else {
		812	my $neg = $spec =~ s/^[-^]//;
		813	unless ( exists &{"RS_$spec"} ) {
		814	push @failed, $spec;
		815	next;
		816	}
		817	my $cur = &{"RS_$spec"};
		818	if ( $neg ) {
		819	$mask &= ~$cur;
		820	} else {
		821	$mask |= $cur;
337	}	822	}
338	}	823	}
339	}	824	}
		825	($mask, @color{qw(fg bg)}, \@failed)
		826	}
340		827
341	my $cb = $term->{_hook}[$htype]	828	package urxvt::term::extension;
342	or return;
343		829
344	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $term, @_) . ")"	830	=head2 The C<urxvt::term::extension> class
345	if $verbosity >= 10;
346		831
		832	Each extension attached to a terminal object is represented by
		833	a C<urxvt::term::extension> object.
		834
		835	You can use these objects, which are passed to all callbacks to store any
		836	state related to the terminal and extension instance.
		837
		838	The methods (And data members) documented below can be called on extension
		839	objects, in addition to call methods documented for the <urxvt::term>
		840	class.
		841
		842	=over 4
		843
		844	=item $urxvt_term = $self->{term}
		845
		846	Returns the C<urxvt::term> object associated with this instance of the
		847	extension. This member I<must not> be changed in any way.
		848
		849	=cut
		850
		851	our $AUTOLOAD;
		852
		853	sub AUTOLOAD {
		854	$AUTOLOAD =~ /:([^:]+)$/
		855	or die "FATAL: \$AUTOLOAD '$AUTOLOAD' unparsable";
		856
		857	eval qq{
		858	sub $AUTOLOAD {
		859	my \$proxy = shift;
		860	\$proxy->{term}->$1 (\@_)
		861	}
		862	1
		863	} or die "FATAL: unable to compile method forwarder: $@";
		864
		865	goto &$AUTOLOAD;
		866	}
		867
		868	sub DESTROY {
		869	# nop
		870	}
		871
		872	# urxvt::destroy_hook (basically a cheap Guard:: implementation)
		873
		874	sub urxvt::destroy_hook::DESTROY {
		875	${$_[0]}->();
		876	}
		877
		878	sub urxvt::destroy_hook(&) {
		879	bless \shift, urxvt::destroy_hook::
		880	}
		881
		882	=item $self->enable ($hook_name => $cb[, $hook_name => $cb..])
		883
		884	Dynamically enable the given hooks (named without the C<on_> prefix) for
		885	this extension, replacing any hook previously installed via C<enable> in
		886	this extension.
		887
		888	This is useful when you want to overwrite time-critical hooks only
		889	temporarily.
		890
		891	To install additional callbacks for the same hook, you can use the C<on>
		892	method of the C<urxvt::term> class.
		893
		894	=item $self->disable ($hook_name[, $hook_name..])
		895
		896	Dynamically disable the given hooks.
		897
		898	=cut
		899
		900	sub enable {
		901	my ($self, %hook) = @_;
		902	my $pkg = $self->{_pkg};
		903
347	while (my ($k, $v) = each %$cb) {	904	while (my ($name, $cb) = each %hook) {
348	return 1 if $v->($term, @_);	905	my $htype = $HOOKTYPE{uc $name};
		906	defined $htype
		907	or Carp::croak "unsupported hook type '$name'";
		908
		909	$self->set_should_invoke ($htype, +1)
		910	unless exists $self->{term}{_hook}[$htype]{$pkg};
		911
		912	$self->{term}{_hook}[$htype]{$pkg} = $cb;
349	}	913	}
		914	}
350		915
		916	sub disable {
		917	my ($self, @hook) = @_;
		918	my $pkg = $self->{_pkg};
		919
		920	for my $name (@hook) {
		921	my $htype = $HOOKTYPE{uc $name};
		922	defined $htype
		923	or Carp::croak "unsupported hook type '$name'";
		924
		925	$self->set_should_invoke ($htype, -1)
		926	if delete $self->{term}{_hook}[$htype]{$pkg};
351	0	927	}
		928	}
		929
		930	=item $guard = $self->on ($hook_name => $cb[, $hook_name => $cb..])
		931
		932	Similar to the C<enable> enable, but installs additional callbacks for
		933	the given hook(s) (that is, it doesn't replace existing callbacks), and
		934	returns a guard object. When the guard object is destroyed the callbacks
		935	are disabled again.
		936
		937	=cut
		938
		939	sub urxvt::extension::on_disable::DESTROY {
		940	my $disable = shift;
		941
		942	my $term = delete $disable->{""};
		943
		944	while (my ($htype, $id) = each %$disable) {
		945	delete $term->{_hook}[$htype]{$id};
		946	$term->set_should_invoke ($htype, -1);
		947	}
		948	}
		949
		950	sub on {
		951	my ($self, %hook) = @_;
		952
		953	my $term = $self->{term};
		954
		955	my %disable = ( "" => $term );
		956
		957	while (my ($name, $cb) = each %hook) {
		958	my $htype = $HOOKTYPE{uc $name};
		959	defined $htype
		960	or Carp::croak "unsupported hook type '$name'";
		961
		962	$term->set_should_invoke ($htype, +1);
		963	$term->{_hook}[$htype]{ $disable{$htype} = $cb+0 }
		964	= sub { shift; $cb->($self, @_) }; # very ugly indeed
		965	}
		966
		967	bless \%disable, "urxvt::extension::on_disable"
		968	}
		969
		970	=item $self->bind_action ($hotkey, $action)
		971
		972	=item $self->x_resource ($pattern)
		973
		974	=item $self->x_resource_boolean ($pattern)
		975
		976	These methods support an additional C<%> prefix for C<$action> or
		977	C<$pattern> when called on an extension object, compared to the
		978	C<urxvt::term> methods of the same name - see the description of these
		979	methods in the C<urxvt::term> class for details.
		980
		981	=cut
		982
		983	sub bind_action {
		984	my ($self, $hotkey, $action) = @_;
		985	$action =~ s/^%:/$_[0]{_name}:/;
		986	$self->{term}->bind_action ($hotkey, $action)
		987	}
		988
		989	sub x_resource {
		990	my ($self, $name) = @_;
		991	$name =~ s/^%(\.|$)/$_[0]{_name}$1/;
		992	$self->{term}->x_resource ($name)
		993	}
		994
		995	sub x_resource_boolean {
		996	my ($self, $name) = @_;
		997	$name =~ s/^%(\.|$)/$_[0]{_name}$1/;
		998	$self->{term}->x_resource_boolean ($name)
352	}	999	}
353		1000
354	=back	1001	=back
355		1002
		1003	=cut
		1004
		1005	package urxvt::anyevent;
		1006
		1007	=head2 The C<urxvt::anyevent> Class
		1008
		1009	The sole purpose of this class is to deliver an interface to the
		1010	C<AnyEvent> module - any module using it will work inside urxvt without
		1011	further programming. The only exception is that you cannot wait on
		1012	condition variables, but non-blocking condvar use is ok.
		1013
		1014	In practical terms this means is that you cannot use blocking APIs, but
		1015	the non-blocking variant should work.
		1016
		1017	=cut
		1018
		1019	our $VERSION = '5.23';
		1020
		1021	$INC{"urxvt/anyevent.pm"} = 1; # mark us as there
		1022	push @AnyEvent::REGISTRY, [urxvt => urxvt::anyevent::];
		1023
		1024	sub timer {
		1025	my ($class, %arg) = @_;
		1026
		1027	my $cb = $arg{cb};
		1028
		1029	urxvt::timer
		1030	->new
		1031	->after ($arg{after}, $arg{interval})
		1032	->cb ($arg{interval} ? $cb : sub {
		1033	$_[0]->stop; # need to cancel manually
		1034	$cb->();
		1035	})
		1036	}
		1037
		1038	sub io {
		1039	my ($class, %arg) = @_;
		1040
		1041	my $cb = $arg{cb};
		1042	my $fd = fileno $arg{fh};
		1043	defined $fd or $fd = $arg{fh};
		1044
		1045	bless [$arg{fh}, urxvt::iow
		1046	->new
		1047	->fd ($fd)
		1048	->events (($arg{poll} =~ /r/ ? 1 : 0)
		1049	| ($arg{poll} =~ /w/ ? 2 : 0))
		1050	->start
		1051	->cb ($cb)
		1052	], urxvt::anyevent::
		1053	}
		1054
		1055	sub idle {
		1056	my ($class, %arg) = @_;
		1057
		1058	my $cb = $arg{cb};
		1059
		1060	urxvt::iw
		1061	->new
		1062	->start
		1063	->cb ($cb)
		1064	}
		1065
		1066	sub child {
		1067	my ($class, %arg) = @_;
		1068
		1069	my $cb = $arg{cb};
		1070
		1071	urxvt::pw
		1072	->new
		1073	->start ($arg{pid})
		1074	->cb (sub {
		1075	$_[0]->stop; # need to cancel manually
		1076	$cb->($_[0]->rpid, $_[0]->rstatus);
		1077	})
		1078	}
		1079
		1080	sub DESTROY {
		1081	$_[0][1]->stop;
		1082	}
		1083
		1084	# only needed for AnyEvent < 6 compatibility
		1085	sub one_event {
		1086	Carp::croak "AnyEvent->one_event blocking wait unsupported in urxvt, use a non-blocking API";
		1087	}
		1088
		1089	package urxvt::term;
		1090
356	=head2 The C<urxvt::term> Class	1091	=head2 The C<urxvt::term> Class
357		1092
358	=over 4	1093	=over 4
		1094
		1095	=cut
		1096
		1097	# find on_xxx subs in the package and register them
		1098	# as hooks
		1099	sub register_package {
		1100	my ($self, $pkg, $argv) = @_;
		1101
		1102	no strict 'refs';
		1103
		1104	urxvt::verbose 6, "register package $pkg to $self";
		1105
		1106	@{"$pkg\::ISA"} = urxvt::term::extension::;
		1107
		1108	my $proxy = bless {
		1109	_pkg => $pkg,
		1110	_name => ${"$pkg\::_NAME"}, # hackish
		1111	argv => $argv,
		1112	}, $pkg;
		1113	Scalar::Util::weaken ($proxy->{term} = $self);
		1114
		1115	$self->{_pkg}{$pkg} = $proxy;
		1116
		1117	for my $name (@HOOKNAME) {
		1118	if (my $ref = $pkg->can ("on_" . lc $name)) {
		1119	$proxy->enable ($name => $ref);
		1120	}
		1121	}
		1122	}
		1123
		1124	sub perl_libdirs {
		1125	map { split /:/ }
		1126	$_[0]->resource ("perl_lib"),
		1127	$ENV{URXVT_PERL_LIB},
		1128	"$ENV{HOME}/.urxvt/ext",
		1129	"$LIBDIR/perl"
		1130	}
		1131
		1132	# scan for available extensions and collect their metadata
		1133	sub scan_extensions {
		1134	my ($self) = @_;
		1135
		1136	return if exists $self->{meta};
		1137
		1138	my @urxvtdirs = perl_libdirs $self;
		1139	# my @cpandirs = grep -d, map "$_/URxvt/Ext", @INC;
		1140
		1141	$self->{meta} = \my %meta;
		1142
		1143	# first gather extensions
		1144
		1145	my $gather = sub {
		1146	my ($dir, $core) = @_;
		1147
		1148	opendir my $fh, $dir
		1149	or return;
		1150
		1151	for my $ext (readdir $fh) {
		1152	$ext !~ /^\./
		1153	or next;
		1154
		1155	open my $fh, "<", "$dir/$ext"
		1156	or next;
		1157
		1158	-f $fh
		1159	or next;
		1160
		1161	$ext =~ s/\.uext$// or $core
		1162	or next;
		1163
		1164	my %ext = (dir => $dir);
		1165
		1166	while (<$fh>) {
		1167	if (/^#:META:(?:X_)?RESOURCE:(.*)/) {
		1168	my ($pattern, $type, $desc) = split /:/, $1;
		1169	$pattern =~ s/^%(\.|$)/$ext$1/g; # % in pattern == extension name
		1170	if ($pattern =~ /[^a-zA-Z0-9\-\.]/) {
		1171	warn "$dir/$ext: meta resource '$pattern' contains illegal characters (not alphanumeric nor . nor *)\n";
		1172	} else {
		1173	$ext{resource}{$pattern} = [$ext, $type, $desc];
		1174	}
		1175	} elsif (/^\s*(?:#|$)/) {
		1176	# skip other comments and empty lines
		1177	} else {
		1178	last; # stop parsing on first non-empty non-comment line
		1179	}
		1180	}
		1181
		1182	$meta{ext}{$ext} = \%ext;
		1183	}
		1184	};
		1185
		1186	# $gather->($_, 0) for @cpandirs;
		1187	$gather->($_, 1) for @urxvtdirs;
		1188
		1189	# and now merge resources
		1190
		1191	$meta{resource} = \my %resource;
		1192
		1193	while (my ($k, $v) = each %{ $meta{ext} }) {
		1194	#TODO: should check for extensions overriding each other
		1195	%resource = (%resource, %{ $v->{resource} });
		1196	}
		1197	}
		1198
		1199	=item $term = new urxvt::term $envhashref, $rxvtname, [arg...]
		1200
		1201	Creates a new terminal, very similar as if you had started it with system
		1202	C<$rxvtname, arg...>. C<$envhashref> must be a reference to a C<%ENV>-like
		1203	hash which defines the environment of the new terminal.
		1204
		1205	Croaks (and probably outputs an error message) if the new instance
		1206	couldn't be created. Returns C<undef> if the new instance didn't
		1207	initialise perl, and the terminal object otherwise. The C<init> and
		1208	C<start> hooks will be called before this call returns, and are free to
		1209	refer to global data (which is race free).
		1210
		1211	=cut
		1212
		1213	sub new {
		1214	my ($class, $env, @args) = @_;
		1215
		1216	$env or Carp::croak "environment hash missing in call to urxvt::term->new";
		1217	@args or Carp::croak "name argument missing in call to urxvt::term->new";
		1218
		1219	_new ([ map "$_=$env->{$_}", keys %$env ], \@args);
		1220	}
		1221
		1222	=item $term->destroy
		1223
		1224	Destroy the terminal object (close the window, free resources
		1225	etc.). Please note that urxvt will not exit as long as any event
		1226	watchers (timers, io watchers) are still active.
		1227
		1228	=item $term->exec_async ($cmd[, @args])
		1229
		1230	Works like the combination of the C<fork>/C<exec> builtins, which executes
		1231	("starts") programs in the background. This function takes care of setting
		1232	the user environment before exec'ing the command (e.g. C<PATH>) and should
		1233	be preferred over explicit calls to C<exec> or C<system>.
		1234
		1235	Returns the pid of the subprocess or C<undef> on error.
		1236
		1237	=cut
		1238
		1239	sub exec_async {
		1240	my $self = shift;
		1241
		1242	my $pid = fork;
		1243
		1244	return $pid
		1245	if !defined $pid or $pid;
		1246
		1247	%ENV = %{ $self->env };
		1248
		1249	exec @_;
		1250	urxvt::_exit 255;
		1251	}
		1252
		1253	=item $isset = $term->option ($optval[, $set])
		1254
		1255	Returns true if the option specified by C<$optval> is enabled, and
		1256	optionally change it. All option values are stored by name in the hash
		1257	C<%urxvt::OPTION>. Options not enabled in this binary are not in the hash.
		1258
		1259	Here is a likely non-exhaustive list of option names, please see the
		1260	source file F</src/optinc.h> to see the actual list:
		1261
		1262	borderLess buffered console cursorBlink cursorUnderline hold iconic
		1263	insecure intensityStyles iso14755 iso14755_52 jumpScroll loginShell
		1264	mapAlert meta8 mouseWheelScrollPage override_redirect pastableTabs
		1265	pointerBlank reverseVideo scrollBar scrollBar_floating scrollBar_right
		1266	scrollTtyKeypress scrollTtyOutput scrollWithBuffer secondaryScreen
		1267	secondaryScroll skipBuiltinGlyphs skipScroll transparent tripleclickwords
		1268	urgentOnBell utmpInhibit visualBell
359		1269
360	=item $value = $term->resource ($name[, $newval])	1270	=item $value = $term->resource ($name[, $newval])
361		1271
362	Returns the current resource value associated with a given name and	1272	Returns the current resource value associated with a given name and
363	optionally sets a new value. Setting values is most useful in the C<init>	1273	optionally sets a new value. Setting values is most useful in the C<init>
…		…
372	likely change).	1282	likely change).
373		1283
374	Please note that resource strings will currently only be freed when the	1284	Please note that resource strings will currently only be freed when the
375	terminal is destroyed, so changing options frequently will eat memory.	1285	terminal is destroyed, so changing options frequently will eat memory.
376		1286
377	Here is a a likely non-exhaustive list of resource names, not all of which	1287	Here is a likely non-exhaustive list of resource names, not all of which
378	are supported in every build, please see the source to see the actual	1288	are supported in every build, please see the source file F</src/rsinc.h>
379	list:	1289	to see the actual list:
380		1290
381	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont	1291	answerbackstring backgroundPixmap backspace_key blurradius
382	borderLess color cursorBlink cursorUnderline cutchars delete_key	1292	boldFont boldItalicFont borderLess buffered chdir color cursorBlink
383	display_name embed ext_bwidth fade font geometry hold iconName	1293	cursorUnderline cutchars delete_key depth display_name embed ext_bwidth
384	imFont imLocale inputMethod insecure int_bwidth intensityStyles	1294	fade font geometry hold iconName iconfile imFont imLocale inputMethod
		1295	insecure int_bwidth intensityStyles iso14755 iso14755_52 italicFont
385	italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier	1296	jumpScroll letterSpace lineSpace loginShell mapAlert meta8 modifier
386	mouseWheelScrollPage name pastableTabs path perl_eval perl_ext	1297	mouseWheelScrollPage name override_redirect pastableTabs path perl_eval
387	perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd	1298	perl_ext_1 perl_ext_2 perl_lib pointerBlank pointerBlankDelay
388	reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating	1299	preeditType print_pipe pty_fd reverseVideo saveLines scrollBar
389	scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput	1300	scrollBar_align scrollBar_floating scrollBar_right scrollBar_thickness
390	scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle	1301	scrollTtyKeypress scrollTtyOutput scrollWithBuffer scrollstyle
391	shade term_name title transparent transparent_all tripleclickwords	1302	secondaryScreen secondaryScroll shade skipBuiltinGlyphs skipScroll
		1303	term_name title transient_for transparent tripleclickwords urgentOnBell
392	utmpInhibit visualBell	1304	utmpInhibit visualBell
393		1305
394	=cut	1306	=cut
395		1307
396	sub urxvt::term::resource($$;$) {	1308	sub resource($$;$) {
397	my ($self, $name) = (shift, shift);	1309	my ($self, $name) = (shift, shift);
398	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);	1310	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);
399	goto &urxvt::term::_resource;	1311	goto &urxvt::term::_resource
400	}	1312	}
		1313
		1314	=item $value = $term->x_resource ($pattern)
		1315
		1316	Returns the X-Resource for the given pattern, excluding the program or
		1317	class name, i.e. C<< $term->x_resource ("boldFont") >> should return the
		1318	same value as used by this instance of rxvt-unicode. Returns C<undef> if no
		1319	resource with that pattern exists.
		1320
		1321	Extensions that define extra resources also need to call this method
		1322	to access their values.
		1323
		1324	If the method is called on an extension object (basically, from an
		1325	extension), then the special prefix C<%.> will be replaced by the name of
		1326	the extension and a dot, and the lone string C<%> will be replaced by the
		1327	extension name itself. This makes it possible to code extensions so you
		1328	can rename them and get a new set of resources without having to change
		1329	the actual code.
		1330
		1331	This method should only be called during the C<on_start> hook, as there is
		1332	only one resource database per display, and later invocations might return
		1333	the wrong resources.
		1334
		1335	=item $value = $term->x_resource_boolean ($pattern)
		1336
		1337	Like C<x_resource>, above, but interprets the string value as a boolean
		1338	and returns C<1> for true values, C<0> for false values and C<undef> if
		1339	the resource or option isn't specified.
		1340
		1341	You should always use this method to parse boolean resources.
		1342
		1343	=cut
		1344
		1345	sub x_resource_boolean {
		1346	my $res = &x_resource;
		1347
		1348	$res =~ /^\s*(?:true|yes|on|1)\s*$/i ? 1 : defined $res && 0
		1349	}
		1350
		1351	=item $action = $term->lookup_keysym ($keysym, $state)
		1352
		1353	Returns the action bound to key combination C<($keysym, $state)>,
		1354	if a binding for it exists, and C<undef> otherwise.
		1355
		1356	=item $success = $term->bind_action ($key, $action)
		1357
		1358	Adds a key binding exactly as specified via a C<keysym> resource. See the
		1359	C<keysym> resource in the urxvt(1) manpage.
		1360
		1361	To add default bindings for actions, an extension should call C<<
		1362	->bind_action >> in its C<init> hook for every such binding. Doing it
		1363	in the C<init> hook allows users to override or remove the binding
		1364	again.
		1365
		1366	Example: the C<searchable-scrollback> by default binds itself
		1367	on C<Meta-s>, using C<< $self->bind_action >>, which calls C<<
		1368	$term->bind_action >>.
		1369
		1370	sub init {
		1371	my ($self) = @_;
		1372
		1373	$self->bind_action ("M-s" => "%:start");
		1374	}
		1375
		1376	=item $rend = $term->rstyle ([$new_rstyle])
		1377
		1378	Return and optionally change the current rendition. Text that is output by
		1379	the terminal application will use this style.
		1380
		1381	=item ($row, $col) = $term->screen_cur ([$row, $col])
		1382
		1383	Return the current coordinates of the text cursor position and optionally
		1384	set it (which is usually bad as applications don't expect that).
401		1385
402	=item ($row, $col) = $term->selection_mark ([$row, $col])	1386	=item ($row, $col) = $term->selection_mark ([$row, $col])
403		1387
404	=item ($row, $col) = $term->selection_beg ([$row, $col])	1388	=item ($row, $col) = $term->selection_beg ([$row, $col])
405		1389
406	=item ($row, $col) = $term->selection_end ([$row, $col])	1390	=item ($row, $col) = $term->selection_end ([$row, $col])
407		1391
408	Return the current values of the selection mark, begin or end positions,	1392	Return the current values of the selection mark, begin or end positions.
409	and optionally set them to new values.
410		1393
		1394	When arguments are given, then the selection coordinates are set to
		1395	C<$row> and C<$col>, and the selection screen is set to the current
		1396	screen.
		1397
		1398	=item $screen = $term->selection_screen ([$screen])
		1399
		1400	Returns the current selection screen, and then optionally sets it.
		1401
		1402	=item $term->selection_make ($eventtime[, $rectangular])
		1403
		1404	Tries to make a selection as set by C<selection_beg> and
		1405	C<selection_end>. If C<$rectangular> is true (default: false), a
		1406	rectangular selection will be made. This is the preferred function to make
		1407	a selection.
		1408
411	=item $success = $term->selection_grab ($eventtime)	1409	=item $success = $term->selection_grab ($eventtime[, $clipboard])
412		1410
413	Try to request the primary selection from the server (for example, as set	1411	Try to acquire ownership of the primary (clipboard if C<$clipboard> is
414	by the next method).	1412	true) selection from the server. The corresponding text can be set
		1413	with the next method. No visual feedback will be given. This function
		1414	is mostly useful from within C<on_sel_grab> hooks.
415		1415
416	=item $oldtext = $term->selection ([$newtext])	1416	=item $oldtext = $term->selection ([$newtext, $clipboard])
417		1417
418	Return the current selection text and optionally replace it by C<$newtext>.	1418	Return the current selection (clipboard if C<$clipboard> is true) text
		1419	and optionally replace it by C<$newtext>.
419		1420
		1421	=item $term->selection_clear ([$clipboard])
		1422
		1423	Revoke ownership of the primary (clipboard if C<$clipboard> is true) selection.
		1424
420	=item $term->scr_overlay ($x, $y, $text)	1425	=item $term->overlay_simple ($x, $y, $text)
421		1426
422	Create a simple multi-line overlay box. See the next method for details.	1427	Create a simple multi-line overlay box. See the next method for details.
423		1428
424	=cut	1429	=cut
425		1430
426	sub urxvt::term::scr_overlay {	1431	sub overlay_simple {
427	my ($self, $x, $y, $text) = @_;	1432	my ($self, $x, $y, $text) = @_;
428		1433
429	my @lines = split /\n/, $text;	1434	my @lines = split /\n/, $text;
430		1435
431	my $w = 0;	1436	my $w = List::Util::max map $self->strwidth ($_), @lines;
432	for (map $self->strwidth ($_), @lines) {
433	$w = $_ if $w < $_;
434	}
435		1437
436	$self->scr_overlay_new ($x, $y, $w, scalar @lines);	1438	my $overlay = $self->overlay ($x, $y, $w, scalar @lines);
437	$self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;	1439	$overlay->set (0, $_, $lines[$_]) for 0.. $#lines;
438	}
439		1440
		1441	$overlay
		1442	}
		1443
440	=item $term->scr_overlay_new ($x, $y, $width, $height)	1444	=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
441		1445
442	Create a new (empty) overlay at the given position with the given	1446	Create a new (empty) overlay at the given position with the given
443	width/height. A border will be put around the box. If either C<$x> or	1447	width/height. C<$rstyle> defines the initial rendition style
444	C<$y> is negative, then this is counted from the right/bottom side,	1448	(default: C<OVERLAY_RSTYLE>).
445	respectively.
446		1449
447	=item $term->scr_overlay_off	1450	If C<$border> is C<2> (default), then a decorative border will be put
		1451	around the box.
448		1452
449	Switch the overlay off again.	1453	If either C<$x> or C<$y> is negative, then this is counted from the
		1454	right/bottom side, respectively.
450		1455
451	=item $term->scr_overlay_set_char ($x, $y, $char, $rend = OVERLAY_RSTYLE)	1456	This method returns an urxvt::overlay object. The overlay will be visible
		1457	as long as the perl object is referenced.
452		1458
453	Put a single character (specified numerically) at the given overlay	1459	The methods currently supported on C<urxvt::overlay> objects are:
454	position.
455		1460
		1461	=over 4
		1462
456	=item $term->scr_overlay_set ($x, $y, $text)	1463	=item $overlay->set ($x, $y, $text[, $rend])
457		1464
458	Write a string at the given position into the overlay.	1465	Similar to C<< $term->ROW_t >> and C<< $term->ROW_r >> in that it puts
		1466	text in rxvt-unicode's special encoding and an array of rendition values
		1467	at a specific position inside the overlay.
459		1468
		1469	If C<$rend> is missing, then the rendition will not be changed.
		1470
		1471	=item $overlay->hide
		1472
		1473	If visible, hide the overlay, but do not destroy it.
		1474
		1475	=item $overlay->show
		1476
		1477	If hidden, display the overlay again.
		1478
		1479	=back
		1480
		1481	=item $popup = $term->popup ($event)
		1482
		1483	Creates a new C<urxvt::popup> object that implements a popup menu. The
		1484	C<$event> I<must> be the event causing the menu to pop up (a button event,
		1485	currently).
		1486
		1487	=cut
		1488
		1489	sub popup {
		1490	my ($self, $event) = @_;
		1491
		1492	$self->grab ($event->{time}, 1)
		1493	or return;
		1494
		1495	my $popup = bless {
		1496	term => $self,
		1497	event => $event,
		1498	}, urxvt::popup::;
		1499
		1500	Scalar::Util::weaken $popup->{term};
		1501
		1502	$self->{_destroy}{$popup} = urxvt::destroy_hook { $popup->{popup}->destroy };
		1503	Scalar::Util::weaken $self->{_destroy}{$popup};
		1504
		1505	$popup
		1506	}
		1507
460	=item $cellwidth = $term->strwidth $string	1508	=item $cellwidth = $term->strwidth ($string)
461		1509
462	Returns the number of screen-cells this string would need. Correctly	1510	Returns the number of screen-cells this string would need. Correctly
463	accounts for wide and combining characters.	1511	accounts for wide and combining characters.
464		1512
465	=item $octets = $term->locale_encode $string	1513	=item $octets = $term->locale_encode ($string)
466		1514
467	Convert the given text string into the corresponding locale encoding.	1515	Convert the given text string into the corresponding locale encoding.
468		1516
469	=item $string = $term->locale_decode $octets	1517	=item $string = $term->locale_decode ($octets)
470		1518
471	Convert the given locale-encoded octets into a perl string.	1519	Convert the given locale-encoded octets into a perl string.
472		1520
		1521	=item $term->scr_xor_span ($beg_row, $beg_col, $end_row, $end_col[, $rstyle])
		1522
		1523	XORs the rendition values in the given span with the provided value
		1524	(default: C<RS_RVid>), which I<MUST NOT> contain font styles. Useful in
		1525	refresh hooks to provide effects similar to the selection.
		1526
		1527	=item $term->scr_xor_rect ($beg_row, $beg_col, $end_row, $end_col[, $rstyle1[, $rstyle2]])
		1528
		1529	Similar to C<scr_xor_span>, but xors a rectangle instead. Trailing
		1530	whitespace will additionally be xored with the C<$rstyle2>, which defaults
		1531	to C<RS_RVid | RS_Uline>, which removes reverse video again and underlines
		1532	it instead. Both styles I<MUST NOT> contain font styles.
		1533
		1534	=item $term->scr_bell
		1535
		1536	Ring the bell!
		1537
		1538	=item $term->scr_add_lines ($string)
		1539
		1540	Write the given text string to the screen, as if output by the application
		1541	running inside the terminal. It may not contain command sequences (escape
		1542	codes - see C<cmd_parse> for that), but is free to use line feeds,
		1543	carriage returns and tabs. The string is a normal text string, not in
		1544	locale-dependent encoding.
		1545
		1546	Normally its not a good idea to use this function, as programs might be
		1547	confused by changes in cursor position or scrolling. Its useful inside a
		1548	C<on_add_lines> hook, though.
		1549
		1550	=item $term->scr_change_screen ($screen)
		1551
		1552	Switch to given screen - 0 primary, 1 secondary.
		1553
		1554	=item $term->cmd_parse ($octets)
		1555
		1556	Similar to C<scr_add_lines>, but the argument must be in the
		1557	locale-specific encoding of the terminal and can contain command sequences
		1558	(escape codes) that will be interpreted.
		1559
473	=item $term->tt_write ($octets)	1560	=item $term->tt_write ($octets)
474		1561
475	Write the octets given in C<$data> to the tty (i.e. as program input). To	1562	Write the octets given in C<$octets> to the tty (i.e. as user input
		1563	to the program, see C<cmd_parse> for the opposite direction). To pass
476	pass characters instead of octets, you should convert your strings first	1564	characters instead of octets, you should convert your strings first to the
477	to the locale-specific encoding using C<< $term->locale_encode >>.	1565	locale-specific encoding using C<< $term->locale_encode >>.
478		1566
		1567	=item $term->tt_write_user_input ($octets)
		1568
		1569	Like C<tt_write>, but should be used when writing strings in response to
		1570	the user pressing a key, to invoke the additional actions requested by
		1571	the user for that case (C<tt_write> doesn't do that).
		1572
		1573	The typical use case would be inside C<on_action> hooks.
		1574
		1575	=item $term->tt_paste ($octets)
		1576
		1577	Write the octets given in C<$octets> to the tty as a paste, converting NL to
		1578	CR and bracketing the data with control sequences if bracketed paste mode
		1579	is set.
		1580
		1581	=item $old_events = $term->pty_ev_events ([$new_events])
		1582
		1583	Replaces the event mask of the pty watcher by the given event mask. Can
		1584	be used to suppress input and output handling to the pty/tty. See the
		1585	description of C<< urxvt::timer->events >>. Make sure to always restore
		1586	the previous value.
		1587
		1588	=item $fd = $term->pty_fd
		1589
		1590	Returns the master file descriptor for the pty in use, or C<-1> if no pty
		1591	is used.
		1592
		1593	=item $windowid = $term->parent
		1594
		1595	Return the window id of the toplevel window.
		1596
		1597	=item $windowid = $term->vt
		1598
		1599	Return the window id of the terminal window.
		1600
		1601	=item $term->vt_emask_add ($x_event_mask)
		1602
		1603	Adds the specified events to the vt event mask. Useful e.g. when you want
		1604	to receive pointer events all the times:
		1605
		1606	$term->vt_emask_add (urxvt::PointerMotionMask);
		1607
		1608	=item $term->set_urgency ($set)
		1609
		1610	Enable/disable the urgency hint on the toplevel window.
		1611
		1612	=item $term->focus_in
		1613
		1614	=item $term->focus_out
		1615
		1616	=item $term->key_press ($state, $keycode[, $time])
		1617
		1618	=item $term->key_release ($state, $keycode[, $time])
		1619
		1620	Deliver various fake events to to terminal.
		1621
		1622	=item $window_width = $term->width
		1623
		1624	=item $window_height = $term->height
		1625
		1626	=item $font_width = $term->fwidth
		1627
		1628	=item $font_height = $term->fheight
		1629
		1630	=item $font_ascent = $term->fbase
		1631
479	=item $nrow = $term->nrow	1632	=item $terminal_rows = $term->nrow
480		1633
481	=item $ncol = $term->ncol	1634	=item $terminal_columns = $term->ncol
482		1635
483	Return the number of rows/columns of the terminal window (i.e. as	1636	=item $has_focus = $term->focus
484	specified by C<-geometry>, excluding any scrollback).
485		1637
		1638	=item $is_mapped = $term->mapped
		1639
		1640	=item $max_scrollback = $term->saveLines
		1641
		1642	=item $nrow_plus_saveLines = $term->total_rows
		1643
		1644	=item $topmost_scrollback_row = $term->top_row
		1645
		1646	Return various integers describing terminal characteristics.
		1647
		1648	=item $x_display = $term->display_id
		1649
		1650	Return the DISPLAY used by rxvt-unicode.
		1651
		1652	=item $lc_ctype = $term->locale
		1653
		1654	Returns the LC_CTYPE category string used by this rxvt-unicode.
		1655
486	=item $nsaved = $term->nsaved	1656	=item $env = $term->env
487		1657
488	Returns the number of lines in the scrollback buffer.	1658	Returns a copy of the environment in effect for the terminal as a hashref
		1659	similar to C<\%ENV>.
		1660
		1661	=item @envv = $term->envv
		1662
		1663	Returns the environment as array of strings of the form C<VAR=VALUE>.
		1664
		1665	=item @argv = $term->argv
		1666
		1667	Return the argument vector as this terminal, similar to @ARGV, but
		1668	includes the program name as first element.
		1669
		1670	=cut
		1671
		1672	sub env {
		1673	+{ map /^([^=]+)(?:=(.*))?$/s && ($1 => $2), $_[0]->envv }
		1674	}
		1675
		1676	=item $modifiermask = $term->ModLevel3Mask
		1677
		1678	=item $modifiermask = $term->ModMetaMask
		1679
		1680	=item $modifiermask = $term->ModNumLockMask
		1681
		1682	Return the modifier masks corresponding to the "ISO Level 3 Shift" (often
		1683	AltGr), the meta key (often Alt) and the num lock key, if applicable.
		1684
		1685	=item $screen = $term->current_screen
		1686
		1687	Returns the currently displayed screen (0 primary, 1 secondary).
		1688
		1689	=item $cursor_is_hidden = $term->hidden_cursor
		1690
		1691	Returns whether the cursor is currently hidden or not.
489		1692
490	=item $view_start = $term->view_start ([$newvalue])	1693	=item $view_start = $term->view_start ([$newvalue])
491		1694
492	Returns the negative row number of the topmost line. Minimum value is	1695	Returns the row number of the topmost displayed line. Maximum value is
493	C<0>, which displays the normal terminal contents. Larger values scroll	1696	C<0>, which displays the normal terminal contents. Lower values scroll
494	this many lines into the scrollback buffer.	1697	this many lines into the scrollback buffer.
495		1698
496	=item $term->want_refresh	1699	=item $term->want_refresh
497		1700
498	Requests a screen refresh. At the next opportunity, rxvt-unicode will	1701	Requests a screen refresh. At the next opportunity, rxvt-unicode will
499	compare the on-screen display with its stored representation. If they	1702	compare the on-screen display with its stored representation. If they
500	differ, it redraws the differences.	1703	differ, it redraws the differences.
501		1704
502	Used after changing terminal contents to display them.	1705	Used after changing terminal contents to display them.
503		1706
		1707	=item $term->refresh_check
		1708
		1709	Checks if a refresh has been requested and, if so, schedules one.
		1710
504	=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])	1711	=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])
505		1712
506	Returns the text of the entire row with number C<$row_number>. Row C<0>	1713	Returns the text of the entire row with number C<$row_number>. Row C<< $term->top_row >>
507	is the topmost terminal line, row C<< $term->$ncol-1 >> is the bottommost	1714	is the topmost terminal line, row C<< $term->nrow-1 >> is the bottommost
508	terminal line. The scrollback buffer starts at line C<-1> and extends to	1715	terminal line. Nothing will be returned if a nonexistent line
509	line C<< -$term->nsaved >>.	1716	is requested.
510		1717
511	If C<$new_text> is specified, it will replace characters in the current	1718	If C<$new_text> is specified, it will replace characters in the current
512	line, starting at column C<$start_col> (default C<0>), which is useful	1719	line, starting at column C<$start_col> (default C<0>), which is useful
513	to replace only parts of a line. The font index in the rendition will	1720	to replace only parts of a line. The font index in the rendition will
514	automatically be updated.	1721	automatically be updated.
515		1722
516	C<$text> is in a special encoding: tabs and wide characters that use more	1723	C<$text> is in a special encoding: tabs and wide characters that use more
517	than one cell when displayed are padded with urxvt::NOCHAR characters	1724	than one cell when displayed are padded with C<$urxvt::NOCHAR> (chr 65535)
518	(C<chr 65535>). Characters with combining characters and other characters	1725	characters. Characters with combining characters and other characters that
519	that do not fit into the normal tetx encoding will be replaced with	1726	do not fit into the normal text encoding will be replaced with characters
520	characters in the private use area.	1727	in the private use area.
521		1728
522	You have to obey this encoding when changing text. The advantage is	1729	You have to obey this encoding when changing text. The advantage is
523	that C<substr> and similar functions work on screen cells and not on	1730	that C<substr> and similar functions work on screen cells and not on
524	characters.	1731	characters.
525		1732
…		…
536		1743
537	See the section on RENDITION, above.	1744	See the section on RENDITION, above.
538		1745
539	=item $length = $term->ROW_l ($row_number[, $new_length])	1746	=item $length = $term->ROW_l ($row_number[, $new_length])
540		1747
541	Returns the number of screen cells that are in use ("the line length"). If	1748	Returns the number of screen cells that are in use ("the line
542	it is C<-1>, then the line is part of a multiple-row logical "line", which	1749	length"). Unlike the urxvt core, this returns C<< $term->ncol >> if the
543	means all characters are in use and it is continued on the next row.	1750	line is joined with the following one.
		1751
		1752	=item $bool = $term->is_longer ($row_number)
		1753
		1754	Returns true if the row is part of a multiple-row logical "line" (i.e.
		1755	joined with the following row), which means all characters are in use
		1756	and it is continued on the next row (and possibly a continuation of the
		1757	previous row(s)).
		1758
		1759	=item $line = $term->line ($row_number)
		1760
		1761	Create and return a new C<urxvt::line> object that stores information
		1762	about the logical line that row C<$row_number> is part of. It supports the
		1763	following methods:
		1764
		1765	=over 4
		1766
		1767	=item $text = $line->t ([$new_text])
		1768
		1769	Returns or replaces the full text of the line, similar to C<ROW_t>
		1770
		1771	=item $rend = $line->r ([$new_rend])
		1772
		1773	Returns or replaces the full rendition array of the line, similar to C<ROW_r>
		1774
		1775	=item $length = $line->l
		1776
		1777	Returns the length of the line in cells, similar to C<ROW_l>.
		1778
		1779	=item $rownum = $line->beg
		1780
		1781	=item $rownum = $line->end
		1782
		1783	Return the row number of the first/last row of the line, respectively.
		1784
		1785	=item $offset = $line->offset_of ($row, $col)
		1786
		1787	Returns the character offset of the given row|col pair within the logical
		1788	line. Works for rows outside the line, too, and returns corresponding
		1789	offsets outside the string.
		1790
		1791	=item ($row, $col) = $line->coord_of ($offset)
		1792
		1793	Translates a string offset into terminal coordinates again.
		1794
		1795	=back
		1796
		1797	=cut
		1798
		1799	sub line {
		1800	my ($self, $row) = @_;
		1801
		1802	my $maxrow = $self->nrow - 1;
		1803
		1804	my ($beg, $end) = ($row, $row);
		1805
		1806	--$beg while $self->ROW_is_longer ($beg - 1);
		1807	++$end while $self->ROW_is_longer ($end) && $end < $maxrow;
		1808
		1809	bless {
		1810	term => $self,
		1811	beg => $beg,
		1812	end => $end,
		1813	ncol => $self->ncol,
		1814	len => ($end - $beg) * $self->ncol + $self->ROW_l ($end),
		1815	}, urxvt::line::
		1816	}
		1817
		1818	sub urxvt::line::t {
		1819	my ($self) = @_;
		1820
		1821	if (@_ > 1) {
		1822	$self->{term}->ROW_t ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		1823	for $self->{beg} .. $self->{end};
		1824	}
		1825
		1826	defined wantarray &&
		1827	substr +(join "", map $self->{term}->ROW_t ($_), $self->{beg} .. $self->{end}),
		1828	0, $self->{len}
		1829	}
		1830
		1831	sub urxvt::line::r {
		1832	my ($self) = @_;
		1833
		1834	if (@_ > 1) {
		1835	$self->{term}->ROW_r ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		1836	for $self->{beg} .. $self->{end};
		1837	}
		1838
		1839	if (defined wantarray) {
		1840	my $rend = [
		1841	map @{ $self->{term}->ROW_r ($_) }, $self->{beg} .. $self->{end}
		1842	];
		1843	$#$rend = $self->{len} - 1;
		1844	return $rend;
		1845	}
		1846
		1847	()
		1848	}
		1849
		1850	sub urxvt::line::beg { $_[0]{beg} }
		1851	sub urxvt::line::end { $_[0]{end} }
		1852	sub urxvt::line::l { $_[0]{len} }
		1853
		1854	sub urxvt::line::offset_of {
		1855	my ($self, $row, $col) = @_;
		1856
		1857	($row - $self->{beg}) * $self->{ncol} + $col
		1858	}
		1859
		1860	sub urxvt::line::coord_of {
		1861	my ($self, $offset) = @_;
		1862
		1863	use integer;
		1864
		1865	(
		1866	$offset / $self->{ncol} + $self->{beg},
		1867	$offset % $self->{ncol}
		1868	)
		1869	}
544		1870
545	=item $text = $term->special_encode $string	1871	=item $text = $term->special_encode $string
546		1872
547	Converts a perl string into the special encoding used by rxvt-unicode,	1873	Converts a perl string into the special encoding used by rxvt-unicode,
548	where one character corresponds to one screen cell. See	1874	where one character corresponds to one screen cell. See
549	C<< $term->ROW_t >> for details.	1875	C<< $term->ROW_t >> for details.
550		1876
551	=item $string = $term->special_decode $text	1877	=item $string = $term->special_decode $text
552		1878
553	Converts rxvt-unicodes text reprsentation into a perl string. See	1879	Converts rxvt-unicodes text representation into a perl string. See
554	C<< $term->ROW_t >> for details.	1880	C<< $term->ROW_t >> for details.
555		1881
		1882	=item $success = $term->grab_button ($button, $modifiermask[, $window = $term->vt])
		1883
		1884	=item $term->ungrab_button ($button, $modifiermask[, $window = $term->vt])
		1885
		1886	Register/unregister a synchronous button grab. See the XGrabButton
		1887	manpage.
		1888
		1889	=item $success = $term->grab ($eventtime[, $sync])
		1890
		1891	Calls XGrabPointer and XGrabKeyboard in asynchronous (default) or
		1892	synchronous (C<$sync> is true). Also remembers the grab timestamp.
		1893
		1894	=item $term->allow_events_async
		1895
		1896	Calls XAllowEvents with AsyncBoth for the most recent grab.
		1897
		1898	=item $term->allow_events_sync
		1899
		1900	Calls XAllowEvents with SyncBoth for the most recent grab.
		1901
		1902	=item $term->allow_events_replay
		1903
		1904	Calls XAllowEvents with both ReplayPointer and ReplayKeyboard for the most
		1905	recent grab.
		1906
		1907	=item $term->ungrab
		1908
		1909	Calls XUngrabPointer and XUngrabKeyboard for the most recent grab. Is called automatically on
		1910	evaluation errors, as it is better to lose the grab in the error case as
		1911	the session.
		1912
		1913	=item $atom = $term->XInternAtom ($atom_name[, $only_if_exists])
		1914
		1915	=item $atom_name = $term->XGetAtomName ($atom)
		1916
		1917	=item @atoms = $term->XListProperties ($window)
		1918
		1919	=item ($type,$format,$octets) = $term->XGetWindowProperty ($window, $property)
		1920
		1921	=item $term->XChangeProperty ($window, $property, $type, $format, $octets)
		1922
		1923	=item $term->XDeleteProperty ($window, $property)
		1924
		1925	=item $window = $term->DefaultRootWindow
		1926
		1927	=item $term->XReparentWindow ($window, $parent, [$x, $y])
		1928
		1929	=item $term->XMapWindow ($window)
		1930
		1931	=item $term->XUnmapWindow ($window)
		1932
		1933	=item $term->XMoveResizeWindow ($window, $x, $y, $width, $height)
		1934
		1935	=item ($x, $y, $child_window) = $term->XTranslateCoordinates ($src, $dst, $x, $y)
		1936
		1937	=item $term->XChangeInput ($window, $add_events[, $del_events])
		1938
		1939	=item $keysym = $term->XStringToKeysym ($string)
		1940
		1941	=item $string = $term->XKeysymToString ($keysym)
		1942
		1943	Various X or X-related functions. The C<$term> object only serves as
		1944	the source of the display, otherwise those functions map more-or-less
		1945	directly onto the X functions of the same name.
		1946
556	=back	1947	=back
		1948
		1949	=cut
		1950
		1951	package urxvt::popup;
		1952
		1953	=head2 The C<urxvt::popup> Class
		1954
		1955	=over 4
		1956
		1957	=cut
		1958
		1959	sub add_item {
		1960	my ($self, $item) = @_;
		1961
		1962	$item->{rend}{normal} = "\x1b[0;30;47m" unless exists $item->{rend}{normal};
		1963	$item->{rend}{hover} = "\x1b[0;30;46m" unless exists $item->{rend}{hover};
		1964	$item->{rend}{active} = "\x1b[m" unless exists $item->{rend}{active};
		1965
		1966	$item->{render} ||= sub { $_[0]{text} };
		1967
		1968	push @{ $self->{item} }, $item;
		1969	}
		1970
		1971	=item $popup->add_title ($title)
		1972
		1973	Adds a non-clickable title to the popup.
		1974
		1975	=cut
		1976
		1977	sub add_title {
		1978	my ($self, $title) = @_;
		1979
		1980	$self->add_item ({
		1981	rend => { normal => "\x1b[38;5;11;44m", hover => "\x1b[38;5;11;44m", active => "\x1b[38;5;11;44m" },
		1982	text => $title,
		1983	activate => sub { },
		1984	});
		1985	}
		1986
		1987	=item $popup->add_separator ([$sepchr])
		1988
		1989	Creates a separator, optionally using the character given as C<$sepchr>.
		1990
		1991	=cut
		1992
		1993	sub add_separator {
		1994	my ($self, $sep) = @_;
		1995
		1996	$sep ||= "=";
		1997
		1998	$self->add_item ({
		1999	rend => { normal => "\x1b[0;30;47m", hover => "\x1b[0;30;47m", active => "\x1b[0;30;47m" },
		2000	text => "",
		2001	render => sub { $sep x $self->{term}->ncol },
		2002	activate => sub { },
		2003	});
		2004	}
		2005
		2006	=item $popup->add_button ($text, $cb)
		2007
		2008	Adds a clickable button to the popup. C<$cb> is called whenever it is
		2009	selected.
		2010
		2011	=cut
		2012
		2013	sub add_button {
		2014	my ($self, $text, $cb) = @_;
		2015
		2016	$self->add_item ({ type => "button", text => $text, activate => $cb});
		2017	}
		2018
		2019	=item $popup->add_toggle ($text, $initial_value, $cb)
		2020
		2021	Adds a toggle/checkbox item to the popup. The callback gets called
		2022	whenever it gets toggled, with a boolean indicating its new value as its
		2023	first argument.
		2024
		2025	=cut
		2026
		2027	sub add_toggle {
		2028	my ($self, $text, $value, $cb) = @_;
		2029
		2030	my $item; $item = {
		2031	type => "button",
		2032	text => " $text",
		2033	value => $value,
		2034	render => sub { ($_[0]{value} ? "* " : " ") . $text },
		2035	activate => sub { $cb->($_[1]{value} = !$_[1]{value}); },
		2036	};
		2037
		2038	$self->add_item ($item);
		2039	}
		2040
		2041	=item $popup->show
		2042
		2043	Displays the popup (which is initially hidden).
		2044
		2045	=cut
		2046
		2047	sub show {
		2048	my ($self) = @_;
		2049
		2050	local $urxvt::popup::self = $self;
		2051
		2052	my $env = $self->{term}->env;
		2053	# we can't hope to reproduce the locale algorithm, so nuke LC_ALL and set LC_CTYPE.
		2054	delete $env->{LC_ALL};
		2055	$env->{LC_CTYPE} = $self->{term}->locale;
		2056
		2057	my $term = urxvt::term->new (
		2058	$env, "popup",
		2059	"--perl-lib" => "", "--perl-ext-common" => "",
		2060	"-pty-fd" => -1, "-sl" => 0,
		2061	"-b" => 1, "-bd" => "grey80", "-bl", "-override-redirect",
		2062	"--transient-for" => $self->{term}->parent,
		2063	"-display" => $self->{term}->display_id,
		2064	"-pe" => "urxvt-popup",
		2065	) or die "unable to create popup window\n";
		2066
		2067	unless (delete $term->{urxvt_popup_init_done}) {
		2068	$term->ungrab;
		2069	$term->destroy;
		2070	die "unable to initialise popup window\n";
		2071	}
		2072	}
		2073
		2074	sub DESTROY {
		2075	my ($self) = @_;
		2076
		2077	delete $self->{term}{_destroy}{$self};
		2078	$self->{term}->ungrab;
		2079	}
		2080
		2081	=back
		2082
		2083	=cut
		2084
		2085	package urxvt::watcher;
557		2086
558	=head2 The C<urxvt::timer> Class	2087	=head2 The C<urxvt::timer> Class
559		2088
560	This class implements timer watchers/events. Time is represented as a	2089	This class implements timer watchers/events. Time is represented as a
561	fractional number of seconds since the epoch. Example:	2090	fractional number of seconds since the epoch. Example:
562		2091
563	# create a digital clock display in upper right corner	2092	$term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
564	$term->{timer} = urxvt::timer	2093	$term->{timer} = urxvt::timer
565	->new	2094	->new
566	->start (urxvt::NOW)	2095	->interval (1)
567	->cb (sub {	2096	->cb (sub {
568	my ($timer) = @_;
569	my $time = $timer->at;
570	$timer->start ($time + 1);
571	$self->scr_overlay (-1, 0,	2097	$term->{overlay}->set (0, 0,
572	POSIX::strftime "%H:%M:%S", localtime $time);	2098	sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
573	});	2099	});
574		2100
575	=over 4	2101	=over 4
576		2102
577	=item $timer = new urxvt::timer	2103	=item $timer = new urxvt::timer
578		2104
579	Create a new timer object in stopped state.	2105	Create a new timer object in started state. It is scheduled to fire
		2106	immediately.
580		2107
581	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })	2108	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })
582		2109
583	Set the callback to be called when the timer triggers.	2110	Set the callback to be called when the timer triggers.
584		2111
585	=item $tstamp = $timer->at
586
587	Return the time this watcher will fire next.
588
589	=item $timer = $timer->set ($tstamp)	2112	=item $timer = $timer->set ($tstamp[, $interval])
590		2113
591	Set the time the event is generated to $tstamp.	2114	Set the time the event is generated to $tstamp (and optionally specifies a
		2115	new $interval).
		2116
		2117	=item $timer = $timer->interval ($interval)
		2118
		2119	By default (and when C<$interval> is C<0>), the timer will automatically
		2120	stop after it has fired once. If C<$interval> is non-zero, then the timer
		2121	is automatically rescheduled at the given intervals.
592		2122
593	=item $timer = $timer->start	2123	=item $timer = $timer->start
594		2124
595	Start the timer.	2125	Start the timer.
596		2126
597	=item $timer = $timer->start ($tstamp)	2127	=item $timer = $timer->start ($tstamp[, $interval])
598		2128
599	Set the event trigger time to C<$tstamp> and start the timer.	2129	Set the event trigger time to C<$tstamp> and start the timer. Optionally
		2130	also replaces the interval.
		2131
		2132	=item $timer = $timer->after ($delay[, $interval])
		2133
		2134	Like C<start>, but sets the expiry timer to c<urxvt::NOW + $delay>.
600		2135
601	=item $timer = $timer->stop	2136	=item $timer = $timer->stop
602		2137
603	Stop the timer.	2138	Stop the timer.
604		2139
…		…
610		2145
611	$term->{socket} = ...	2146	$term->{socket} = ...
612	$term->{iow} = urxvt::iow	2147	$term->{iow} = urxvt::iow
613	->new	2148	->new
614	->fd (fileno $term->{socket})	2149	->fd (fileno $term->{socket})
615	->events (1) # wait for read data	2150	->events (urxvt::EV_READ)
616	->start	2151	->start
617	->cb (sub {	2152	->cb (sub {
618	my ($iow, $revents) = @_;	2153	my ($iow, $revents) = @_;
619	# $revents must be 1 here, no need to check	2154	# $revents must be 1 here, no need to check
620	sysread $term->{socket}, my $buf, 8192	2155	sysread $term->{socket}, my $buf, 8192
…		…
633	Set the callback to be called when io events are triggered. C<$reventmask>	2168	Set the callback to be called when io events are triggered. C<$reventmask>
634	is a bitset as described in the C<events> method.	2169	is a bitset as described in the C<events> method.
635		2170
636	=item $iow = $iow->fd ($fd)	2171	=item $iow = $iow->fd ($fd)
637		2172
638	Set the filedescriptor (not handle) to watch.	2173	Set the file descriptor (not handle) to watch.
639		2174
640	=item $iow = $iow->events ($eventmask)	2175	=item $iow = $iow->events ($eventmask)
641		2176
642	Set the event mask to watch. Bit #0 (value C<1>) enables watching for read	2177	Set the event mask to watch. The only allowed values are
643	data, Bit #1 (value C<2>) enables watching for write data.	2178	C<urxvt::EV_READ> and C<urxvt::EV_WRITE>, which might be ORed
		2179	together, or C<urxvt::EV_NONE>.
644		2180
645	=item $iow = $iow->start	2181	=item $iow = $iow->start
646		2182
647	Start watching for requested events on the given handle.	2183	Start watching for requested events on the given handle.
648		2184
649	=item $iow = $iow->stop	2185	=item $iow = $iow->stop
650		2186
651	Stop watching for events on the given filehandle.	2187	Stop watching for events on the given file handle.
		2188
		2189	=back
		2190
		2191	=head2 The C<urxvt::iw> Class
		2192
		2193	This class implements idle watchers, that get called automatically when
		2194	the process is idle. They should return as fast as possible, after doing
		2195	some useful work.
		2196
		2197	=over 4
		2198
		2199	=item $iw = new urxvt::iw
		2200
		2201	Create a new idle watcher object in stopped state.
		2202
		2203	=item $iw = $iw->cb (sub { my ($iw) = @_; ... })
		2204
		2205	Set the callback to be called when the watcher triggers.
		2206
		2207	=item $timer = $timer->start
		2208
		2209	Start the watcher.
		2210
		2211	=item $timer = $timer->stop
		2212
		2213	Stop the watcher.
		2214
		2215	=back
		2216
		2217	=head2 The C<urxvt::pw> Class
		2218
		2219	This class implements process watchers. They create an event whenever a
		2220	process exits, after which they stop automatically.
		2221
		2222	my $pid = fork;
		2223	...
		2224	$term->{pw} = urxvt::pw
		2225	->new
		2226	->start ($pid)
		2227	->cb (sub {
		2228	my ($pw, $exit_status) = @_;
		2229	...
		2230	});
		2231
		2232	=over 4
		2233
		2234	=item $pw = new urxvt::pw
		2235
		2236	Create a new process watcher in stopped state.
		2237
		2238	=item $pw = $pw->cb (sub { my ($pw, $exit_status) = @_; ... })
		2239
		2240	Set the callback to be called when the timer triggers.
		2241
		2242	=item $pw = $timer->start ($pid)
		2243
		2244	Tells the watcher to start watching for process C<$pid>.
		2245
		2246	=item $pw = $pw->stop
		2247
		2248	Stop the watcher.
652		2249
653	=back	2250	=back
654		2251
655	=head1 ENVIRONMENT	2252	=head1 ENVIRONMENT
656		2253
…		…
659	This variable controls the verbosity level of the perl extension. Higher	2256	This variable controls the verbosity level of the perl extension. Higher
660	numbers indicate more verbose output.	2257	numbers indicate more verbose output.
661		2258
662	=over 4	2259	=over 4
663		2260
664	=item 0 - only fatal messages	2261	=item == 0 - fatal messages
665		2262
666	=item 3 - script loading and management	2263	=item >= 3 - script loading and management
667		2264
668	=item 10 - all events received	2265	=item >=10 - all called hooks
		2266
		2267	=item >=11 - hook return values
669		2268
670	=back	2269	=back
671		2270
672	=head1 AUTHOR	2271	=head1 AUTHOR
673		2272
674	Marc Lehmann <pcg@goof.com>	2273	Marc Lehmann <schmorp@schmorp.de>
675	http://software.schmorp.de/pkg/rxvt-unicode	2274	http://software.schmorp.de/pkg/rxvt-unicode
676		2275
677	=cut	2276	=cut
678		2277
679	1	2278	1
		2279
		2280	# vim: sw=3:

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