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Revision 1.19 by root, Tue Jan 3 02:42:17 2006 UTC vs.
Revision 1.234 by root, Sat May 17 15:25:04 2014 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 that add command line parameters or resources on their own are
		49	loaded automatically when used.
45		50
46	=over 4	51	=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		52
68	=head2 General API Considerations	53	=head2 General API Considerations
69		54
70	All objects (such as terminals, time watchers etc.) are typical	55	All objects (such as terminals, time watchers etc.) are typical
71	reference-to-hash objects. The hash can be used to store anything you	56	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	57	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	58	C<_hook>) are reserved for internal uses and B<MUST NOT> be accessed or
74	modified).	59	modified).
75		60
76	When objects are destroyed on the C++ side, the perl object hashes are	61	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	62	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	63	the like inside the terminal object so they get destroyed as soon as the
79	terminal is destroyed.	64	terminal is destroyed.
80		65
		66	Argument names also often indicate the type of a parameter. Here are some
		67	hints on what they mean:
		68
		69	=over 4
		70
		71	=item $text
		72
		73	Rxvt-unicode's special way of encoding text, where one "unicode" character
		74	always represents one screen cell. See L<ROW_t> for a discussion of this format.
		75
		76	=item $string
		77
		78	A perl text string, with an emphasis on I<text>. It can store all unicode
		79	characters and is to be distinguished with text encoded in a specific
		80	encoding (often locale-specific) and binary data.
		81
		82	=item $octets
		83
		84	Either binary data or - more common - a text string encoded in a
		85	locale-specific way.
		86
		87	=item $keysym
		88
		89	an integer that is a valid X11 keysym code. You can convert a string
		90	into a keysym and viceversa by using C<XStringToKeysym> and
		91	C<XKeysymToString>.
		92
		93	=back
		94
		95	=head2 Extension Objects
		96
		97	Every perl extension is a perl class. A separate perl object is created
		98	for each terminal, and each terminal has its own set of extension objects,
		99	which are passed as the first parameter to hooks. So extensions can use
		100	their C<$self> object without having to think about clashes with other
		101	extensions or other terminals, with the exception of methods and members
		102	that begin with an underscore character C<_>: these are reserved for
		103	internal use.
		104
		105	Although it isn't a C<urxvt::term> object, you can call all methods of the
		106	C<urxvt::term> class on this object.
		107
		108	Additional methods only supported for extension objects are described in
		109	the C<urxvt::extension> section below.
		110
81	=head2 Hooks	111	=head2 Hooks
82		112
83	The following subroutines can be declared in loaded scripts, and will be called	113	The following subroutines can be declared in extension files, and will be
84	whenever the relevant event happens.	114	called whenever the relevant event happens.
85		115
86	All of them must return a boolean value. If it is true, then the event	116	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,	117	the in the C<Extension Objects> section.
		118
		119	B<All> of these hooks must return a boolean value. If any of the called
		120	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.	121	relevant action might not be carried out by the C++ code.
89		122
90	When in doubt, return a false value (preferably C<()>).	123	I<< When in doubt, return a false value (preferably C<()>). >>
91		124
92	=over 4	125	=over 4
93		126
94	=item on_init $term	127	=item on_init $term
95		128
96	Called after a new terminal object has been initialized, but before	129	Called after a new terminal object has been initialized, but before
97	windows are created or the command gets run.	130	windows are created or the command gets run. Most methods are unsafe to
		131	call or deliver senseless data, as terminal size and other characteristics
		132	have not yet been determined. You can safely query and change resources
		133	and options, though. For many purposes the C<on_start> hook is a better
		134	place.
		135
		136	=item on_start $term
		137
		138	Called at the very end of initialisation of a new terminal, just before
		139	trying to map (display) the toplevel and returning to the main loop.
		140
		141	=item on_destroy $term
		142
		143	Called whenever something tries to destroy terminal, when the terminal is
		144	still fully functional (not for long, though).
98		145
99	=item on_reset $term	146	=item on_reset $term
100		147
101	Called after the screen is "reset" for any reason, such as resizing or	148	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	149	control sequences. Here is where you can react on changes to size-related
103	variables.	150	variables.
104		151
105	=item on_start $term	152	=item on_child_start $term, $pid
106		153
107	Called at the very end of initialisation of a new terminal, just before	154	Called just after the child process has been C<fork>ed.
108	returning to the mainloop.	155
		156	=item on_child_exit $term, $status
		157
		158	Called just after the child process has exited. C<$status> is the status
		159	from C<waitpid>.
109		160
110	=item on_sel_make $term, $eventtime	161	=item on_sel_make $term, $eventtime
111		162
112	Called whenever a selection has been made by the user, but before the	163	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	164	selection text is copied, so changes to the beginning, end or type of the
…		…
120		171
121	Called whenever a selection has been copied, but before the selection is	172	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	173	requested from the server. The selection text can be queried and changed
123	by calling C<< $term->selection >>.	174	by calling C<< $term->selection >>.
124		175
125	Returning a true value aborts selection grabbing. It will still be hilighted.	176	Returning a true value aborts selection grabbing. It will still be highlighted.
126		177
127	=item on_focus_in $term	178	=item on_sel_extend $term
128		179
129	Called whenever the window gets the keyboard focus, before urxvt does	180	Called whenever the user tries to extend the selection (e.g. with a double
130	focus in processing.	181	click) and is either supposed to return false (normal operation), or
		182	should extend the selection itself and return true to suppress the built-in
		183	processing. This can happen multiple times, as long as the callback
		184	returns true, it will be called on every further click by the user and is
		185	supposed to enlarge the selection more and more, if possible.
131		186
132	=item on_focus_out $term	187	See the F<selection> example extension.
133
134	Called wheneever the window loses keyboard focus, before urxvt does focus
135	out processing.
136		188
137	=item on_view_change $term, $offset	189	=item on_view_change $term, $offset
138		190
139	Called whenever the view offset changes, i..e the user or program	191	Called whenever the view offset changes, i.e. the user or program
140	scrolls. Offset C<0> means display the normal terminal, positive values	192	scrolls. Offset C<0> means display the normal terminal, positive values
141	show this many lines of scrollback.	193	show this many lines of scrollback.
142		194
143	=item on_scroll_back $term, $lines, $saved	195	=item on_scroll_back $term, $lines, $saved
144		196
…		…
148		200
149	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,	201	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	202	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total
151	number of lines that will be in the scrollback buffer.	203	number of lines that will be in the scrollback buffer.
152		204
153	=item on_tty_activity $term *NYI*	205	=item on_osc_seq $term, $op, $args, $resp
154		206
155	Called whenever the program(s) running in the urxvt window send output.	207	Called on every OSC sequence and can be used to suppress it or modify its
		208	behaviour. The default should be to return an empty list. A true value
		209	suppresses execution of the request completely. Make sure you don't get
		210	confused by recursive invocations when you output an OSC sequence within
		211	this callback.
		212
		213	C<on_osc_seq_perl> should be used for new behaviour.
		214
		215	=item on_osc_seq_perl $term, $args, $resp
		216
		217	Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =
		218	operating system command) is processed. Cursor position and other state
		219	information is up-to-date when this happens. For interoperability, the
		220	string should start with the extension name (sans -osc) and a semicolon,
		221	to distinguish it from commands for other extensions, and this might be
		222	enforced in the future.
		223
		224	For example, C<overlay-osc> uses this:
		225
		226	sub on_osc_seq_perl {
		227	my ($self, $osc, $resp) = @_;
		228
		229	return unless $osc =~ s/^overlay;//;
		230
		231	... process remaining $osc string
		232	}
		233
		234	Be careful not ever to trust (in a security sense) the data you receive,
		235	as its source can not easily be controlled (e-mail content, messages from
		236	other users on the same system etc.).
		237
		238	For responses, C<$resp> contains the end-of-args separator used by the
		239	sender.
		240
		241	=item on_add_lines $term, $string
		242
		243	Called whenever text is about to be output, with the text as argument. You
		244	can filter/change and output the text yourself by returning a true value
		245	and calling C<< $term->scr_add_lines >> yourself. Please note that this
		246	might be very slow, however, as your hook is called for B<all> text being
		247	output.
		248
		249	=item on_tt_write $term, $octets
		250
		251	Called whenever some data is written to the tty/pty and can be used to
		252	suppress or filter tty input.
		253
		254	=item on_tt_paste $term, $octets
		255
		256	Called whenever text is about to be pasted, with the text as argument. You
		257	can filter/change and paste the text yourself by returning a true value
		258	and calling C<< $term->tt_paste >> yourself. C<$octets> is
		259	locale-encoded.
		260
		261	=item on_line_update $term, $row
		262
		263	Called whenever a line was updated or changed. Can be used to filter
		264	screen output (e.g. underline urls or other useless stuff). Only lines
		265	that are being shown will be filtered, and, due to performance reasons,
		266	not always immediately.
		267
		268	The row number is always the topmost row of the line if the line spans
		269	multiple rows.
		270
		271	Please note that, if you change the line, then the hook might get called
		272	later with the already-modified line (e.g. if unrelated parts change), so
		273	you cannot just toggle rendition bits, but only set them.
156		274
157	=item on_refresh_begin $term	275	=item on_refresh_begin $term
158		276
159	Called just before the screen gets redrawn. Can be used for overlay	277	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	278	similar effects by modifying the terminal contents in refresh_begin, and
161	restoring them in refresh_end. The built-in overlay and selection display	279	restoring them in refresh_end. The built-in overlay and selection display
162	code is run after this hook, and takes precedence.	280	code is run after this hook, and takes precedence.
163		281
164	=item on_refresh_end $term	282	=item on_refresh_end $term
165		283
166	Called just after the screen gets redrawn. See C<on_refresh_begin>.	284	Called just after the screen gets redrawn. See C<on_refresh_begin>.
167		285
168	=item on_keyboard_command $term, $string	286	=item on_user_command $term, $string *DEPRECATED*
169		287
170	Called whenever the user presses a key combination that has a	288	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>	289	a C<perl:string> action bound to a key, see description of the B<keysym>
172	resource in the @@RXVT_NAME@@(1) manpage).	290	resource in the urxvt(1) manpage).
		291
		292	The event is simply the action string. This interface is going away in
		293	preference to the C<< ->register_keysym_action >> method.
		294
		295	=item on_resize_all_windows $term, $new_width, $new_height
		296
		297	Called just after the new window size has been calculated, but before
		298	windows are actually being resized or hints are being set. If this hook
		299	returns a true value, setting of the window hints is being skipped.
		300
		301	=item on_x_event $term, $event
		302
		303	Called on every X event received on the vt window (and possibly other
		304	windows). Should only be used as a last resort. Most event structure
		305	members are not passed.
		306
		307	=item on_root_event $term, $event
		308
		309	Like C<on_x_event>, but is called for events on the root window.
		310
		311	=item on_focus_in $term
		312
		313	Called whenever the window gets the keyboard focus, before rxvt-unicode
		314	does focus in processing.
		315
		316	=item on_focus_out $term
		317
		318	Called whenever the window loses keyboard focus, before rxvt-unicode does
		319	focus out processing.
		320
		321	=item on_configure_notify $term, $event
		322
		323	=item on_property_notify $term, $event
		324
		325	=item on_key_press $term, $event, $keysym, $octets
		326
		327	=item on_key_release $term, $event, $keysym
		328
		329	=item on_button_press $term, $event
		330
		331	=item on_button_release $term, $event
		332
		333	=item on_motion_notify $term, $event
		334
		335	=item on_map_notify $term, $event
		336
		337	=item on_unmap_notify $term, $event
		338
		339	Called whenever the corresponding X event is received for the terminal. If
		340	the hook returns true, then the event will be ignored by rxvt-unicode.
		341
		342	The event is a hash with most values as named by Xlib (see the XEvent
		343	manpage), with the additional members C<row> and C<col>, which are the
		344	(real, not screen-based) row and column under the mouse cursor.
		345
		346	C<on_key_press> additionally receives the string rxvt-unicode would
		347	output, if any, in locale-specific encoding.
		348
		349	=item on_client_message $term, $event
		350
		351	=item on_wm_protocols $term, $event
		352
		353	=item on_wm_delete_window $term, $event
		354
		355	Called when various types of ClientMessage events are received (all with
		356	format=32, WM_PROTOCOLS or WM_PROTOCOLS:WM_DELETE_WINDOW).
		357
		358	=item on_bell $term
		359
		360	Called on receipt of a bell character.
173		361
174	=back	362	=back
175		363
		364	=cut
		365
		366	package urxvt;
		367
		368	use utf8;
		369	use strict 'vars';
		370	use Carp ();
		371	use Scalar::Util ();
		372	use List::Util ();
		373
		374	our $VERSION = 1;
		375	our $TERM;
		376	our @TERM_INIT; # should go, prevents async I/O etc.
		377	our @TERM_EXT; # should go, prevents async I/O etc.
		378	our @HOOKNAME;
		379	our %HOOKTYPE = map +($HOOKNAME[$_] => $_), 0..$#HOOKNAME;
		380	our %OPTION;
		381
		382	our $LIBDIR;
		383	our $RESNAME;
		384	our $RESCLASS;
		385	our $RXVTNAME;
		386
		387	our $NOCHAR = chr 0xffff;
		388
		389	=head2 Variables in the C<urxvt> Package
		390
		391	=over 4
		392
		393	=item $urxvt::LIBDIR
		394
		395	The rxvt-unicode library directory, where, among other things, the perl
		396	modules and scripts are stored.
		397
		398	=item $urxvt::RESCLASS, $urxvt::RESCLASS
		399
		400	The resource class and name rxvt-unicode uses to look up X resources.
		401
		402	=item $urxvt::RXVTNAME
		403
		404	The basename of the installed binaries, usually C<urxvt>.
		405
		406	=item $urxvt::TERM
		407
		408	The current terminal. This variable stores the current C<urxvt::term>
		409	object, whenever a callback/hook is executing.
		410
		411	=item @urxvt::TERM_INIT
		412
		413	All code references in this array will be called as methods of the next newly
		414	created C<urxvt::term> object (during the C<on_init> phase). The array
		415	gets cleared before the code references that were in it are being executed,
		416	so references can push themselves onto it again if they so desire.
		417
		418	This complements to the perl-eval command line option, but gets executed
		419	first.
		420
		421	=item @urxvt::TERM_EXT
		422
		423	Works similar to C<@TERM_INIT>, but contains perl package/class names, which
		424	get registered as normal extensions after calling the hooks in C<@TERM_INIT>
		425	but before other extensions. Gets cleared just like C<@TERM_INIT>.
		426
		427	=back
		428
176	=head2 Functions in the C<urxvt> Package	429	=head2 Functions in the C<urxvt> Package
177		430
178	=over 4	431	=over 4
179		432
180	=item urxvt::fatal $errormessage	433	=item urxvt::fatal $errormessage
181		434
182	Fatally aborts execution with the given error message. Avoid at all	435	Fatally aborts execution with the given error message (which should
183	costs! The only time this is acceptable is when the terminal process	436	include a trailing newline). Avoid at all costs! The only time this
184	starts up.	437	is acceptable (and useful) is in the init hook, where it prevents the
		438	terminal from starting up.
185		439
186	=item urxvt::warn $string	440	=item urxvt::warn $string
187		441
188	Calls C<rxvt_warn> with the given string which should not include a	442	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	443	newline. The module also overwrites the C<warn> builtin with a function
190	that calls this function.	444	that calls this function.
191		445
192	Using this function has the advantage that its output ends up in the	446	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.	447	correct place, e.g. on stderr of the connecting urxvtc client.
194		448
		449	Messages have a size limit of 1023 bytes currently.
		450
		451	=item @terms = urxvt::termlist
		452
		453	Returns all urxvt::term objects that exist in this process, regardless of
		454	whether they are started, being destroyed etc., so be careful. Only term
		455	objects that have perl extensions attached will be returned (because there
		456	is no urxvt::term object associated with others).
		457
195	=item $time = urxvt::NOW	458	=item $time = urxvt::NOW
196		459
197	Returns the "current time" (as per the event loop).	460	Returns the "current time" (as per the event loop).
		461
		462	=item urxvt::CurrentTime
		463
		464	=item urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,
		465	Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,
		466	Button4Mask, Button5Mask, AnyModifier
		467
		468	=item urxvt::NoEventMask, KeyPressMask, KeyReleaseMask,
		469	ButtonPressMask, ButtonReleaseMask, EnterWindowMask, LeaveWindowMask,
		470	PointerMotionMask, PointerMotionHintMask, Button1MotionMask, Button2MotionMask,
		471	Button3MotionMask, Button4MotionMask, Button5MotionMask, ButtonMotionMask,
		472	KeymapStateMask, ExposureMask, VisibilityChangeMask, StructureNotifyMask,
		473	ResizeRedirectMask, SubstructureNotifyMask, SubstructureRedirectMask,
		474	FocusChangeMask, PropertyChangeMask, ColormapChangeMask, OwnerGrabButtonMask
		475
		476	=item urxvt::KeyPress, KeyRelease, ButtonPress, ButtonRelease, MotionNotify,
		477	EnterNotify, LeaveNotify, FocusIn, FocusOut, KeymapNotify, Expose,
		478	GraphicsExpose, NoExpose, VisibilityNotify, CreateNotify, DestroyNotify,
		479	UnmapNotify, MapNotify, MapRequest, ReparentNotify, ConfigureNotify,
		480	ConfigureRequest, GravityNotify, ResizeRequest, CirculateNotify,
		481	CirculateRequest, PropertyNotify, SelectionClear, SelectionRequest,
		482	SelectionNotify, ColormapNotify, ClientMessage, MappingNotify
		483
		484	Various constants for use in X calls and event processing.
		485
		486	=back
198		487
199	=head2 RENDITION	488	=head2 RENDITION
200		489
201	Rendition bitsets contain information about colour, font, font styles and	490	Rendition bitsets contain information about colour, font, font styles and
202	similar information for each screen cell.	491	similar information for each screen cell.
…		…
215		504
216	=item $rend = urxvt::OVERLAY_RSTYLE	505	=item $rend = urxvt::OVERLAY_RSTYLE
217		506
218	Return the rendition mask used for overlays by default.	507	Return the rendition mask used for overlays by default.
219		508
220	=item $rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline	509	=item $rendbit = urxvt::RS_Bold, urxvt::RS_Italic, urxvt::RS_Blink,
		510	urxvt::RS_RVid, urxvt::RS_Uline
221		511
222	Return the bit that enabled bold, italic, blink, reverse-video and	512	Return the bit that enabled bold, italic, blink, reverse-video and
223	underline, respectively. To enable such a style, just logically OR it into	513	underline, respectively. To enable such a style, just logically OR it into
224	the bitset.	514	the bitset.
225		515
…		…
227		517
228	=item $background = urxvt::GET_BASEBG $rend	518	=item $background = urxvt::GET_BASEBG $rend
229		519
230	Return the foreground/background colour index, respectively.	520	Return the foreground/background colour index, respectively.
231		521
232	=item $rend = urxvt::SET_FGCOLOR ($rend, $new_colour)	522	=item $rend = urxvt::SET_FGCOLOR $rend, $new_colour
233		523
234	=item $rend = urxvt::SET_BGCOLOR ($rend, $new_colour)	524	=item $rend = urxvt::SET_BGCOLOR $rend, $new_colour
		525
		526	=item $rend = urxvt::SET_COLOR $rend, $new_fg, $new_bg
235		527
236	Replace the foreground/background colour in the rendition mask with the	528	Replace the foreground/background colour in the rendition mask with the
237	specified one.	529	specified one.
238		530
239	=item $value = urxvt::GET_CUSTOM ($rend)	531	=item $value = urxvt::GET_CUSTOM $rend
240		532
241	Return the "custom" value: Every rendition has 5 bits for use by	533	Return the "custom" value: Every rendition has 5 bits for use by
242	extensions. They can be set and changed as you like and are initially	534	extensions. They can be set and changed as you like and are initially
243	zero.	535	zero.
244		536
245	=item $rend = urxvt::SET_CUSTOM ($rend, $new_value)	537	=item $rend = urxvt::SET_CUSTOM $rend, $new_value
246		538
247	Change the custom value.	539	Change the custom value.
248		540
249	=back	541	=back
250		542
251	=cut	543	=cut
252		544
253	package urxvt;
254
255	use strict;
256
257	our $term;
258	our @HOOKNAME;
259	our $LIBDIR;
260
261	BEGIN {	545	BEGIN {
262	urxvt->bootstrap;
263
264	# overwrite perl's warn	546	# overwrite perl's warn
265	*CORE::GLOBAL::warn = sub {	547	*CORE::GLOBAL::warn = sub {
266	my $msg = join "", @_;	548	my $msg = join "", @_;
267	$msg .= "\n"	549	$msg .= "\n"
268	unless $msg =~ /\n$/;	550	unless $msg =~ /\n$/;
269	urxvt::warn ($msg);	551	urxvt::warn ($msg);
270	};	552	};
271	}	553	}
272		554
273	my @hook_count;	555	no warnings 'utf8';
		556
		557	sub parse_resource {
		558	my ($term, $name, $isarg, $longopt, $flag, $value) = @_;
		559
		560	$name =~ y/-/./ if $isarg;
		561
		562	$term->scan_extensions;
		563
		564	my $r = $term->{meta}{resource};
		565	keys %$r; # reset iterator
		566	while (my ($pattern, $v) = each %$r) {
		567	if (
		568	$pattern =~ /\.$/
		569	? $pattern eq substr $name, 0, length $pattern
		570	: $pattern eq $name
		571	) {
		572	$name = "$urxvt::RESCLASS.$name";
		573
		574	push @{ $term->{perl_ext_3} }, $v->[0];
		575
		576	if ($v->[1] eq "boolean") {
		577	$term->put_option_db ($name, $flag ? "true" : "false");
		578	return 1;
		579	} else {
		580	$term->put_option_db ($name, $value);
		581	return 1 + 2;
		582	}
		583	}
		584	}
		585
		586	0
		587	}
		588
		589	sub usage {
		590	my ($term, $usage_type) = @_;
		591
		592	$term->scan_extensions;
		593
		594	my $r = $term->{meta}{resource};
		595
		596	for my $pattern (sort keys %$r) {
		597	my ($ext, $type, $desc) = @{ $r->{$pattern} };
		598
		599	$desc .= " (-pe $ext)";
		600
		601	if ($usage_type == 1) {
		602	$pattern =~ y/./-/;
		603	$pattern =~ s/-$/-.../g;
		604
		605	if ($type eq "boolean") {
		606	urxvt::log sprintf " -%-30s %s\n", "/+$pattern", $desc;
		607	} else {
		608	urxvt::log sprintf " -%-30s %s\n", "$pattern $type", $desc;
		609	}
		610	} else {
		611	$pattern =~ s/\.$/.*/g;
		612	urxvt::log sprintf " %-31s %s\n", "$pattern:", $type;
		613	}
		614	}
		615	}
		616
274	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};	617	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};
275		618
276	sub verbose {	619	sub verbose {
277	my ($level, $msg) = @_;	620	my ($level, $msg) = @_;
278	warn "$msg\n" if $level <= $verbosity;	621	warn "$msg\n" if $level <= $verbosity;
279	}	622	}
280		623
281	# find on_xxx subs in the package and register them	624	my %extension_pkg;
282	# as hooks
283	sub register_package($) {
284	my ($pkg) = @_;
285
286	for my $htype (0.. $#HOOKNAME) {
287	my $name = $HOOKNAME[$htype];
288
289	my $ref = $pkg->can ("on_" . lc $name)
290	or next;
291
292	$term->{_hook}[$htype]{$ref*1} = $ref;
293	$hook_count[$htype]++
294	or set_should_invoke $htype, 1;
295	}
296	}
297
298	my $script_pkg = "script0000";
299	my %script_pkg;
300		625
301	# load a single script into its own package, once only	626	# load a single script into its own package, once only
302	sub script_package($) {	627	sub extension_package($) {
303	my ($path) = @_;	628	my ($path) = @_;
304		629
305	$script_pkg{$path} ||= do {	630	$extension_pkg{$path} ||= do {
306	my $pkg = "urxvt::" . ($script_pkg++);	631	$path =~ /([^\/\\]+)$/;
		632	my $pkg = $1;
		633	$pkg =~ s/[^[:word:]]/_/g;
		634	$pkg = "urxvt::ext::$pkg";
307		635
308	verbose 3, "loading script '$path' into package '$pkg'";	636	verbose 3, "loading extension '$path' into package '$pkg'";
		637
		638	(${"$pkg\::_NAME"} = $path) =~ s/^.*[\\\/]//; # hackish
309		639
310	open my $fh, "<:raw", $path	640	open my $fh, "<:raw", $path
311	or die "$path: $!";	641	or die "$path: $!";
312		642
313	my $source = "package $pkg; use strict; use utf8;\n"	643	my $source =
		644	"package $pkg; use strict 'vars'; use utf8; no warnings 'utf8';\n"
314	. "#line 1 \"$path\"\n{\n"	645	. "#line 1 \"$path\"\n{\n"
315	. (do { local $/; <$fh> })	646	. (do { local $/; <$fh> })
316	. "\n};\n1";	647	. "\n};\n1";
317		648
		649	eval $source
318	eval $source or die "$path: $@";	650	or die "$path: $@";
319		651
320	$pkg	652	$pkg
321	}	653	}
322	}	654	}
323		655
		656	our $retval; # return value for urxvt
		657
324	# called by the rxvt core	658	# called by the rxvt core
325	sub invoke {	659	sub invoke {
326	local $term = shift;	660	local $TERM = shift;
327	my $htype = shift;	661	my $htype = shift;
328		662
329	if ($htype == 0) { # INIT	663	if ($htype == HOOK_INIT) {
330	my @dirs = ((split /:/, $term->resource ("perl_lib")), "$LIBDIR/perl");	664	my @dirs = $TERM->perl_libdirs;
331		665
332	for my $ext (split /:/, $term->resource ("perl_ext")) {	666	$TERM->scan_extensions;
		667
		668	my %ext_arg;
		669
		670	{
		671	my @init = @TERM_INIT;
		672	@TERM_INIT = ();
		673	$_->($TERM) for @init;
		674	my @pkg = @TERM_EXT;
		675	@TERM_EXT = ();
		676	$TERM->register_package ($_) for @pkg;
		677	}
		678
		679	for (
		680	@{ delete $TERM->{perl_ext_3} },
		681	grep $_, map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2
		682	) {
		683	if ($_ eq "default") {
		684	$ext_arg{$_} ||= [] for qw(selection option-popup selection-popup searchable-scrollback readline);
		685	} elsif (/^-(.*)$/) {
		686	delete $ext_arg{$1};
		687	} elsif (/^([^<]+)<(.*)>$/) {
		688	push @{ $ext_arg{$1} }, $2;
		689	} else {
		690	$ext_arg{$_} ||= [];
		691	}
		692	}
		693
		694	for my $ext (sort keys %ext_arg) {
333	my @files = grep -f $_, map "$_/$ext", @dirs;	695	my @files = grep -f $_, map "$_/$ext", @dirs;
334		696
335	if (@files) {	697	if (@files) {
336	register_package script_package $files[0];	698	$TERM->register_package (extension_package $files[0], $ext_arg{$ext});
337	} else {	699	} else {
338	warn "perl extension '$ext' not found in perl library search path\n";	700	warn "perl extension '$ext' not found in perl library search path\n";
339	}	701	}
340	}	702	}
341		703
342	} elsif ($htype == 1) { # DESTROY	704	eval "#line 1 \"--perl-eval resource/argument\"\n" . $TERM->resource ("perl_eval");
343	if (my $hook = $term->{_hook}) {	705	warn $@ if $@;
344	for my $htype (0..$#$hook) {	706	}
345	$hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} }	707
346	or set_should_invoke $htype, 0;	708	$retval = undef;
		709
		710	if (my $cb = $TERM->{_hook}[$htype]) {
		711	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
		712	if $verbosity >= 10;
		713
		714	if ($htype == HOOK_ACTION) {
		715	# this hook is only sent to the extension with the name
		716	# matching the first arg
		717	my $pkg = shift;
		718	$pkg =~ y/-/_/;
		719	$pkg = "urxvt::ext::$pkg";
		720
		721	$cb = $cb->{$pkg}
		722	or return undef; #TODO: maybe warn user?
		723
		724	$cb = { $pkg => $cb };
		725	}
		726
		727	for my $pkg (keys %$cb) {
		728	my $retval_ = eval { $cb->{$pkg}->($TERM->{_pkg}{$pkg} || $TERM, @_) };
		729	$retval ||= $retval_;
		730
		731	if ($@) {
		732	$TERM->ungrab; # better to lose the grab than the session
		733	warn $@;
		734	}
		735	}
		736
		737	verbose 11, "$HOOKNAME[$htype] returning <$retval>"
		738	if $verbosity >= 11;
		739	}
		740
		741	if ($htype == HOOK_DESTROY) {
		742	# clear package objects
		743	%$_ = () for values %{ $TERM->{_pkg} };
		744
		745	# clear package
		746	%$TERM = ();
		747	}
		748
		749	$retval
		750	}
		751
		752	sub SET_COLOR($$$) {
		753	SET_BGCOLOR (SET_FGCOLOR ($_[0], $_[1]), $_[2])
		754	}
		755
		756	sub rend2mask {
		757	no strict 'refs';
		758	my ($str, $mask) = (@_, 0);
		759	my %color = ( fg => undef, bg => undef );
		760	my @failed;
		761	for my $spec ( split /\s+/, $str ) {
		762	if ( $spec =~ /^([fb]g)[_:-]?(\d+)/i ) {
		763	$color{lc($1)} = $2;
		764	} else {
		765	my $neg = $spec =~ s/^[-^]//;
		766	unless ( exists &{"RS_$spec"} ) {
		767	push @failed, $spec;
		768	next;
		769	}
		770	my $cur = &{"RS_$spec"};
		771	if ( $neg ) {
		772	$mask &= ~$cur;
		773	} else {
		774	$mask |= $cur;
347	}	775	}
348	}	776	}
349	}	777	}
		778	($mask, @color{qw(fg bg)}, \@failed)
		779	}
350		780
351	my $cb = $term->{_hook}[$htype]	781	package urxvt::term::extension;
352	or return;
353		782
354	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $term, @_) . ")"	783	=head2 The C<urxvt::term::extension> class
355	if $verbosity >= 10;
356		784
		785	Each extension attached to a terminal object is represented by
		786	a C<urxvt::term::extension> object.
		787
		788	You can use these objects, which are passed to all callbacks to store any
		789	state related to the terminal and extension instance.
		790
		791	The methods (And data members) documented below can be called on extension
		792	objects, in addition to call methods documented for the <urxvt::term>
		793	class.
		794
		795	=over 4
		796
		797	=item $urxvt_term = $self->{term}
		798
		799	Returns the C<urxvt::term> object associated with this instance of the
		800	extension. This member I<must not> be changed in any way.
		801
		802	=cut
		803
		804	our $AUTOLOAD;
		805
		806	sub AUTOLOAD {
		807	$AUTOLOAD =~ /:([^:]+)$/
		808	or die "FATAL: \$AUTOLOAD '$AUTOLOAD' unparsable";
		809
		810	eval qq{
		811	sub $AUTOLOAD {
		812	my \$proxy = shift;
		813	\$proxy->{term}->$1 (\@_)
		814	}
		815	1
		816	} or die "FATAL: unable to compile method forwarder: $@";
		817
		818	goto &$AUTOLOAD;
		819	}
		820
		821	sub DESTROY {
		822	# nop
		823	}
		824
		825	# urxvt::destroy_hook (basically a cheap Guard:: implementation)
		826
		827	sub urxvt::destroy_hook::DESTROY {
		828	${$_[0]}->();
		829	}
		830
		831	sub urxvt::destroy_hook(&) {
		832	bless \shift, urxvt::destroy_hook::
		833	}
		834
		835	=item $self->enable ($hook_name => $cb[, $hook_name => $cb..])
		836
		837	Dynamically enable the given hooks (named without the C<on_> prefix) for
		838	this extension, replacing any hook previously installed via C<enable> in
		839	this extension.
		840
		841	This is useful when you want to overwrite time-critical hooks only
		842	temporarily.
		843
		844	To install additional callbacks for the same hook, you can use the C<on>
		845	method of the C<urxvt::term> class.
		846
		847	=item $self->disable ($hook_name[, $hook_name..])
		848
		849	Dynamically disable the given hooks.
		850
		851	=cut
		852
		853	sub enable {
		854	my ($self, %hook) = @_;
		855	my $pkg = $self->{_pkg};
		856
357	while (my ($k, $v) = each %$cb) {	857	while (my ($name, $cb) = each %hook) {
358	return 1 if $v->($term, @_);	858	my $htype = $HOOKTYPE{uc $name};
		859	defined $htype
		860	or Carp::croak "unsupported hook type '$name'";
		861
		862	$self->set_should_invoke ($htype, +1)
		863	unless exists $self->{term}{_hook}[$htype]{$pkg};
		864
		865	$self->{term}{_hook}[$htype]{$pkg} = $cb;
359	}	866	}
		867	}
360		868
		869	sub disable {
		870	my ($self, @hook) = @_;
		871	my $pkg = $self->{_pkg};
		872
		873	for my $name (@hook) {
		874	my $htype = $HOOKTYPE{uc $name};
		875	defined $htype
		876	or Carp::croak "unsupported hook type '$name'";
		877
		878	$self->set_should_invoke ($htype, -1)
		879	if delete $self->{term}{_hook}[$htype]{$pkg};
361	0	880	}
		881	}
		882
		883	=item $guard = $self->on ($hook_name => $cb[, $hook_name => $cb..])
		884
		885	Similar to the C<enable> enable, but installs additional callbacks for
		886	the given hook(s) (that is, it doesn't replace existing callbacks), and
		887	returns a guard object. When the guard object is destroyed the callbacks
		888	are disabled again.
		889
		890	=cut
		891
		892	sub urxvt::extension::on_disable::DESTROY {
		893	my $disable = shift;
		894
		895	my $term = delete $disable->{""};
		896
		897	while (my ($htype, $id) = each %$disable) {
		898	delete $term->{_hook}[$htype]{$id};
		899	$term->set_should_invoke ($htype, -1);
		900	}
		901	}
		902
		903	sub on {
		904	my ($self, %hook) = @_;
		905
		906	my $term = $self->{term};
		907
		908	my %disable = ( "" => $term );
		909
		910	while (my ($name, $cb) = each %hook) {
		911	my $htype = $HOOKTYPE{uc $name};
		912	defined $htype
		913	or Carp::croak "unsupported hook type '$name'";
		914
		915	$term->set_should_invoke ($htype, +1);
		916	$term->{_hook}[$htype]{ $disable{$htype} = $cb+0 }
		917	= sub { shift; $cb->($self, @_) }; # very ugly indeed
		918	}
		919
		920	bless \%disable, "urxvt::extension::on_disable"
		921	}
		922
		923	=item $self->x_resource ($pattern)
		924
		925	=item $self->x_resource_boolean ($pattern)
		926
		927	These methods support an additional C<%> prefix when called on an
		928	extension object - see the description of these methods in the
		929	C<urxvt::term> class for details.
		930
		931	=cut
		932
		933	sub x_resource {
		934	my ($self, $name) = @_;
		935	$name =~ s/^%(\.|$)/$_[0]{_name}$1/;
		936	$self->{term}->x_resource ($name)
		937	}
		938
		939	sub x_resource_boolean {
		940	my ($self, $name) = @_;
		941	$name =~ s/^%(\.|$)/$_[0]{_name}$1/;
		942	$self->{term}->x_resource_boolean ($name)
362	}	943	}
363		944
364	=back	945	=back
365		946
		947	=cut
		948
		949	package urxvt::anyevent;
		950
		951	=head2 The C<urxvt::anyevent> Class
		952
		953	The sole purpose of this class is to deliver an interface to the
		954	C<AnyEvent> module - any module using it will work inside urxvt without
		955	further programming. The only exception is that you cannot wait on
		956	condition variables, but non-blocking condvar use is ok.
		957
		958	In practical terms this means is that you cannot use blocking APIs, but
		959	the non-blocking variant should work.
		960
		961	=cut
		962
		963	our $VERSION = '5.23';
		964
		965	$INC{"urxvt/anyevent.pm"} = 1; # mark us as there
		966	push @AnyEvent::REGISTRY, [urxvt => urxvt::anyevent::];
		967
		968	sub timer {
		969	my ($class, %arg) = @_;
		970
		971	my $cb = $arg{cb};
		972
		973	urxvt::timer
		974	->new
		975	->after ($arg{after}, $arg{interval})
		976	->cb ($arg{interval} ? $cb : sub {
		977	$_[0]->stop; # need to cancel manually
		978	$cb->();
		979	})
		980	}
		981
		982	sub io {
		983	my ($class, %arg) = @_;
		984
		985	my $cb = $arg{cb};
		986	my $fd = fileno $arg{fh};
		987	defined $fd or $fd = $arg{fh};
		988
		989	bless [$arg{fh}, urxvt::iow
		990	->new
		991	->fd ($fd)
		992	->events (($arg{poll} =~ /r/ ? 1 : 0)
		993	| ($arg{poll} =~ /w/ ? 2 : 0))
		994	->start
		995	->cb ($cb)
		996	], urxvt::anyevent::
		997	}
		998
		999	sub idle {
		1000	my ($class, %arg) = @_;
		1001
		1002	my $cb = $arg{cb};
		1003
		1004	urxvt::iw
		1005	->new
		1006	->start
		1007	->cb ($cb)
		1008	}
		1009
		1010	sub child {
		1011	my ($class, %arg) = @_;
		1012
		1013	my $cb = $arg{cb};
		1014
		1015	urxvt::pw
		1016	->new
		1017	->start ($arg{pid})
		1018	->cb (sub {
		1019	$_[0]->stop; # need to cancel manually
		1020	$cb->($_[0]->rpid, $_[0]->rstatus);
		1021	})
		1022	}
		1023
		1024	sub DESTROY {
		1025	$_[0][1]->stop;
		1026	}
		1027
		1028	# only needed for AnyEvent < 6 compatibility
		1029	sub one_event {
		1030	Carp::croak "AnyEvent->one_event blocking wait unsupported in urxvt, use a non-blocking API";
		1031	}
		1032
		1033	package urxvt::term;
		1034
366	=head2 The C<urxvt::term> Class	1035	=head2 The C<urxvt::term> Class
367		1036
368	=over 4	1037	=over 4
		1038
		1039	=cut
		1040
		1041	# find on_xxx subs in the package and register them
		1042	# as hooks
		1043	sub register_package {
		1044	my ($self, $pkg, $argv) = @_;
		1045
		1046	no strict 'refs';
		1047
		1048	urxvt::verbose 6, "register package $pkg to $self";
		1049
		1050	@{"$pkg\::ISA"} = urxvt::term::extension::;
		1051
		1052	my $proxy = bless {
		1053	_pkg => $pkg,
		1054	_name => ${"$pkg\::_NAME"}, # hackish
		1055	argv => $argv,
		1056	}, $pkg;
		1057	Scalar::Util::weaken ($proxy->{term} = $self);
		1058
		1059	$self->{_pkg}{$pkg} = $proxy;
		1060
		1061	for my $name (@HOOKNAME) {
		1062	if (my $ref = $pkg->can ("on_" . lc $name)) {
		1063	$proxy->enable ($name => $ref);
		1064	}
		1065	}
		1066	}
		1067
		1068	sub perl_libdirs {
		1069	map { split /:/ }
		1070	$_[0]->resource ("perl_lib"),
		1071	$ENV{URXVT_PERL_LIB},
		1072	"$ENV{HOME}/.urxvt/ext",
		1073	"$LIBDIR/perl"
		1074	}
		1075
		1076	# scan for available extensions and collect their metadata
		1077	sub scan_extensions {
		1078	my ($self) = @_;
		1079
		1080	return if exists $self->{meta};
		1081
		1082	my @libdirs = perl_libdirs $self;
		1083
		1084	return if $self->{meta_libdirs} eq join "\x00", @libdirs;
		1085
		1086	my %meta;
		1087
		1088	$self->{meta_libdirs} = join "\x00", @libdirs;
		1089	$self->{meta} = \%meta;
		1090
		1091	my %ext;
		1092
		1093	# first gather extensions
		1094	for my $dir (reverse @libdirs) {
		1095	opendir my $fh, $dir
		1096	or next;
		1097	for my $ext (readdir $fh) {
		1098	$ext !~ /^\./
		1099	and open my $fh, "<", "$dir/$ext"
		1100	or next;
		1101
		1102	my %ext = (dir => $dir);
		1103
		1104	while (<$fh>) {
		1105	if (/^#:META:(?:X_)?RESOURCE:(.*)/) {
		1106	my ($pattern, $type, $desc) = split /:/, $1;
		1107	$pattern =~ s/^%(\.|$)/$ext$1/g; # % in pattern == extension name
		1108	if ($pattern =~ /[^a-zA-Z0-9\-\.]/) {
		1109	warn "$dir/$ext: meta resource '$pattern' contains illegal characters (not alphanumeric nor . nor *)\n";
		1110	} else {
		1111	$ext{resource}{$pattern} = [$ext, $type, $desc];
		1112	}
		1113	} elsif (/^#:META:BINDING:(.*)/) {
		1114	my ($keysym, $action) = split /:/, $1;
		1115	$ext{binding}{$keysym} = $action;
		1116	} elsif (/^\s*(?:#|$)/) {
		1117	# skip other comments and empty lines
		1118	} else {
		1119	last; # stop parsing on first non-empty non-comment line
		1120	}
		1121	}
		1122
		1123	$meta{$ext} = \%ext;
		1124	}
		1125	}
		1126
		1127	# and now merge resources and bindings
		1128	while (my ($k, $v) = each %ext) {
		1129	#TODO: should check for extensions overriding each other
		1130	%{ $meta{resource} } = (%{ $meta{resource} }, %{ $v->{resource} });
		1131	%{ $meta{binding} } = (%{ $meta{binding} }, %{ $v->{binding} });
		1132	}
		1133	}
		1134
		1135	=item $term = new urxvt::term $envhashref, $rxvtname, [arg...]
		1136
		1137	Creates a new terminal, very similar as if you had started it with system
		1138	C<$rxvtname, arg...>. C<$envhashref> must be a reference to a C<%ENV>-like
		1139	hash which defines the environment of the new terminal.
		1140
		1141	Croaks (and probably outputs an error message) if the new instance
		1142	couldn't be created. Returns C<undef> if the new instance didn't
		1143	initialise perl, and the terminal object otherwise. The C<init> and
		1144	C<start> hooks will be called before this call returns, and are free to
		1145	refer to global data (which is race free).
		1146
		1147	=cut
		1148
		1149	sub new {
		1150	my ($class, $env, @args) = @_;
		1151
		1152	$env or Carp::croak "environment hash missing in call to urxvt::term->new";
		1153	@args or Carp::croak "name argument missing in call to urxvt::term->new";
		1154
		1155	_new ([ map "$_=$env->{$_}", keys %$env ], \@args);
		1156	}
		1157
		1158	=item $term->destroy
		1159
		1160	Destroy the terminal object (close the window, free resources
		1161	etc.). Please note that urxvt will not exit as long as any event
		1162	watchers (timers, io watchers) are still active.
		1163
		1164	=item $term->exec_async ($cmd[, @args])
		1165
		1166	Works like the combination of the C<fork>/C<exec> builtins, which executes
		1167	("starts") programs in the background. This function takes care of setting
		1168	the user environment before exec'ing the command (e.g. C<PATH>) and should
		1169	be preferred over explicit calls to C<exec> or C<system>.
		1170
		1171	Returns the pid of the subprocess or C<undef> on error.
		1172
		1173	=cut
		1174
		1175	sub exec_async {
		1176	my $self = shift;
		1177
		1178	my $pid = fork;
		1179
		1180	return $pid
		1181	if !defined $pid or $pid;
		1182
		1183	%ENV = %{ $self->env };
		1184
		1185	exec @_;
		1186	urxvt::_exit 255;
		1187	}
		1188
		1189	=item $isset = $term->option ($optval[, $set])
		1190
		1191	Returns true if the option specified by C<$optval> is enabled, and
		1192	optionally change it. All option values are stored by name in the hash
		1193	C<%urxvt::OPTION>. Options not enabled in this binary are not in the hash.
		1194
		1195	Here is a likely non-exhaustive list of option names, please see the
		1196	source file F</src/optinc.h> to see the actual list:
		1197
		1198	borderLess buffered console cursorBlink cursorUnderline hold iconic
		1199	insecure intensityStyles iso14755 iso14755_52 jumpScroll loginShell
		1200	mapAlert meta8 mouseWheelScrollPage override_redirect pastableTabs
		1201	pointerBlank reverseVideo scrollBar scrollBar_floating scrollBar_right
		1202	scrollTtyKeypress scrollTtyOutput scrollWithBuffer secondaryScreen
		1203	secondaryScroll skipBuiltinGlyphs skipScroll transparent tripleclickwords
		1204	urgentOnBell utmpInhibit visualBell
369		1205
370	=item $value = $term->resource ($name[, $newval])	1206	=item $value = $term->resource ($name[, $newval])
371		1207
372	Returns the current resource value associated with a given name and	1208	Returns the current resource value associated with a given name and
373	optionally sets a new value. Setting values is most useful in the C<init>	1209	optionally sets a new value. Setting values is most useful in the C<init>
…		…
382	likely change).	1218	likely change).
383		1219
384	Please note that resource strings will currently only be freed when the	1220	Please note that resource strings will currently only be freed when the
385	terminal is destroyed, so changing options frequently will eat memory.	1221	terminal is destroyed, so changing options frequently will eat memory.
386		1222
387	Here is a a likely non-exhaustive list of resource names, not all of which	1223	Here is a likely non-exhaustive list of resource names, not all of which
388	are supported in every build, please see the source to see the actual	1224	are supported in every build, please see the source file F</src/rsinc.h>
389	list:	1225	to see the actual list:
390		1226
391	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont	1227	answerbackstring backgroundPixmap backspace_key blurradius
392	borderLess color cursorBlink cursorUnderline cutchars delete_key	1228	boldFont boldItalicFont borderLess buffered chdir color cursorBlink
393	display_name embed ext_bwidth fade font geometry hold iconName	1229	cursorUnderline cutchars delete_key depth display_name embed ext_bwidth
394	imFont imLocale inputMethod insecure int_bwidth intensityStyles	1230	fade font geometry hold iconName iconfile imFont imLocale inputMethod
		1231	insecure int_bwidth intensityStyles iso14755 iso14755_52 italicFont
395	italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier	1232	jumpScroll letterSpace lineSpace loginShell mapAlert meta8 modifier
396	mouseWheelScrollPage name pastableTabs path perl_eval perl_ext	1233	mouseWheelScrollPage name override_redirect pastableTabs path perl_eval
397	perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd	1234	perl_ext_1 perl_ext_2 perl_lib pointerBlank pointerBlankDelay
398	reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating	1235	preeditType print_pipe pty_fd reverseVideo saveLines scrollBar
399	scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput	1236	scrollBar_align scrollBar_floating scrollBar_right scrollBar_thickness
400	scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle	1237	scrollTtyKeypress scrollTtyOutput scrollWithBuffer scrollstyle
401	shade term_name title transparent transparent_all tripleclickwords	1238	secondaryScreen secondaryScroll shade skipBuiltinGlyphs skipScroll
		1239	term_name title transient_for transparent tripleclickwords urgentOnBell
402	utmpInhibit visualBell	1240	utmpInhibit visualBell
403		1241
404	=cut	1242	=cut
405		1243
406	sub urxvt::term::resource($$;$) {	1244	sub resource($$;$) {
407	my ($self, $name) = (shift, shift);	1245	my ($self, $name) = (shift, shift);
408	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);	1246	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);
409	goto &urxvt::term::_resource;	1247	goto &urxvt::term::_resource
410	}	1248	}
		1249
		1250	=item $value = $term->x_resource ($pattern)
		1251
		1252	Returns the X-Resource for the given pattern, excluding the program or
		1253	class name, i.e. C<< $term->x_resource ("boldFont") >> should return the
		1254	same value as used by this instance of rxvt-unicode. Returns C<undef> if no
		1255	resource with that pattern exists.
		1256
		1257	Extensions that define extra resource or command line arguments also need
		1258	to call this method to access their values.
		1259
		1260	If the method is called on an extension object (basically, from an
		1261	extension), then the special prefix C<%.> will be replaced by the name of
		1262	the extension and a dot, and the lone string C<%> will be replaced by the
		1263	extension name itself. This makes it possible to code extensions so you
		1264	can rename them and get a new set of commandline switches and resources
		1265	without having to change the actual code.
		1266
		1267	This method should only be called during the C<on_start> hook, as there is
		1268	only one resource database per display, and later invocations might return
		1269	the wrong resources.
		1270
		1271	=item $value = $term->x_resource_boolean ($pattern)
		1272
		1273	Like C<x_resource>, above, but interprets the string value as a boolean
		1274	and returns C<1> for true values, C<0> for false values and C<undef> if
		1275	the resource or option isn't specified.
		1276
		1277	You should always use this method to parse boolean resources.
		1278
		1279	=cut
		1280
		1281	sub x_resource_boolean {
		1282	my $res = &x_resource;
		1283
		1284	$res =~ /^\s*(?:true|yes|on|1)\s*$/i ? 1 : defined $res && 0
		1285	}
		1286
		1287	=item $success = $term->bind_action ($key, $octets)
		1288
		1289	Adds a key binding exactly as specified via a C<keysym> resource. See the
		1290	C<keysym> resource in the urxvt(1) manpage.
		1291
		1292	=item $rend = $term->rstyle ([$new_rstyle])
		1293
		1294	Return and optionally change the current rendition. Text that is output by
		1295	the terminal application will use this style.
		1296
		1297	=item ($row, $col) = $term->screen_cur ([$row, $col])
		1298
		1299	Return the current coordinates of the text cursor position and optionally
		1300	set it (which is usually bad as applications don't expect that).
411		1301
412	=item ($row, $col) = $term->selection_mark ([$row, $col])	1302	=item ($row, $col) = $term->selection_mark ([$row, $col])
413		1303
414	=item ($row, $col) = $term->selection_beg ([$row, $col])	1304	=item ($row, $col) = $term->selection_beg ([$row, $col])
415		1305
416	=item ($row, $col) = $term->selection_end ([$row, $col])	1306	=item ($row, $col) = $term->selection_end ([$row, $col])
417		1307
418	Return the current values of the selection mark, begin or end positions,	1308	Return the current values of the selection mark, begin or end positions.
419	and optionally set them to new values.
420		1309
		1310	When arguments are given, then the selection coordinates are set to
		1311	C<$row> and C<$col>, and the selection screen is set to the current
		1312	screen.
		1313
		1314	=item $screen = $term->selection_screen ([$screen])
		1315
		1316	Returns the current selection screen, and then optionally sets it.
		1317
		1318	=item $term->selection_make ($eventtime[, $rectangular])
		1319
		1320	Tries to make a selection as set by C<selection_beg> and
		1321	C<selection_end>. If C<$rectangular> is true (default: false), a
		1322	rectangular selection will be made. This is the preferred function to make
		1323	a selection.
		1324
421	=item $success = $term->selection_grab ($eventtime)	1325	=item $success = $term->selection_grab ($eventtime[, $clipboard])
422		1326
423	Try to request the primary selection from the server (for example, as set	1327	Try to acquire ownership of the primary (clipboard if C<$clipboard> is
424	by the next method).	1328	true) selection from the server. The corresponding text can be set
		1329	with the next method. No visual feedback will be given. This function
		1330	is mostly useful from within C<on_sel_grab> hooks.
425		1331
426	=item $oldtext = $term->selection ([$newtext])	1332	=item $oldtext = $term->selection ([$newtext, $clipboard])
427		1333
428	Return the current selection text and optionally replace it by C<$newtext>.	1334	Return the current selection (clipboard if C<$clipboard> is true) text
		1335	and optionally replace it by C<$newtext>.
429		1336
		1337	=item $term->selection_clear ([$clipboard])
		1338
		1339	Revoke ownership of the primary (clipboard if C<$clipboard> is true) selection.
		1340
430	=item $term->scr_overlay ($x, $y, $text)	1341	=item $term->overlay_simple ($x, $y, $text)
431		1342
432	Create a simple multi-line overlay box. See the next method for details.	1343	Create a simple multi-line overlay box. See the next method for details.
433		1344
434	=cut	1345	=cut
435		1346
436	sub urxvt::term::scr_overlay {	1347	sub overlay_simple {
437	my ($self, $x, $y, $text) = @_;	1348	my ($self, $x, $y, $text) = @_;
438		1349
439	my @lines = split /\n/, $text;	1350	my @lines = split /\n/, $text;
440		1351
441	my $w = 0;	1352	my $w = List::Util::max map $self->strwidth ($_), @lines;
442	for (map $self->strwidth ($_), @lines) {
443	$w = $_ if $w < $_;
444	}
445		1353
446	$self->scr_overlay_new ($x, $y, $w, scalar @lines);	1354	my $overlay = $self->overlay ($x, $y, $w, scalar @lines);
447	$self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;	1355	$overlay->set (0, $_, $lines[$_]) for 0.. $#lines;
448	}
449		1356
		1357	$overlay
		1358	}
		1359
450	=item $term->scr_overlay_new ($x, $y, $width, $height)	1360	=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
451		1361
452	Create a new (empty) overlay at the given position with the given	1362	Create a new (empty) overlay at the given position with the given
453	width/height. A border will be put around the box. If either C<$x> or	1363	width/height. C<$rstyle> defines the initial rendition style
454	C<$y> is negative, then this is counted from the right/bottom side,	1364	(default: C<OVERLAY_RSTYLE>).
455	respectively.
456		1365
457	=item $term->scr_overlay_off	1366	If C<$border> is C<2> (default), then a decorative border will be put
		1367	around the box.
458		1368
459	Switch the overlay off again.	1369	If either C<$x> or C<$y> is negative, then this is counted from the
		1370	right/bottom side, respectively.
460		1371
461	=item $term->scr_overlay_set_char ($x, $y, $char, $rend = OVERLAY_RSTYLE)	1372	This method returns an urxvt::overlay object. The overlay will be visible
		1373	as long as the perl object is referenced.
462		1374
463	Put a single character (specified numerically) at the given overlay	1375	The methods currently supported on C<urxvt::overlay> objects are:
464	position.
465		1376
		1377	=over 4
		1378
466	=item $term->scr_overlay_set ($x, $y, $text)	1379	=item $overlay->set ($x, $y, $text[, $rend])
467		1380
468	Write a string at the given position into the overlay.	1381	Similar to C<< $term->ROW_t >> and C<< $term->ROW_r >> in that it puts
		1382	text in rxvt-unicode's special encoding and an array of rendition values
		1383	at a specific position inside the overlay.
469		1384
		1385	If C<$rend> is missing, then the rendition will not be changed.
		1386
		1387	=item $overlay->hide
		1388
		1389	If visible, hide the overlay, but do not destroy it.
		1390
		1391	=item $overlay->show
		1392
		1393	If hidden, display the overlay again.
		1394
		1395	=back
		1396
		1397	=item $popup = $term->popup ($event)
		1398
		1399	Creates a new C<urxvt::popup> object that implements a popup menu. The
		1400	C<$event> I<must> be the event causing the menu to pop up (a button event,
		1401	currently).
		1402
		1403	=cut
		1404
		1405	sub popup {
		1406	my ($self, $event) = @_;
		1407
		1408	$self->grab ($event->{time}, 1)
		1409	or return;
		1410
		1411	my $popup = bless {
		1412	term => $self,
		1413	event => $event,
		1414	}, urxvt::popup::;
		1415
		1416	Scalar::Util::weaken $popup->{term};
		1417
		1418	$self->{_destroy}{$popup} = urxvt::destroy_hook { $popup->{popup}->destroy };
		1419	Scalar::Util::weaken $self->{_destroy}{$popup};
		1420
		1421	$popup
		1422	}
		1423
470	=item $cellwidth = $term->strwidth $string	1424	=item $cellwidth = $term->strwidth ($string)
471		1425
472	Returns the number of screen-cells this string would need. Correctly	1426	Returns the number of screen-cells this string would need. Correctly
473	accounts for wide and combining characters.	1427	accounts for wide and combining characters.
474		1428
475	=item $octets = $term->locale_encode $string	1429	=item $octets = $term->locale_encode ($string)
476		1430
477	Convert the given text string into the corresponding locale encoding.	1431	Convert the given text string into the corresponding locale encoding.
478		1432
479	=item $string = $term->locale_decode $octets	1433	=item $string = $term->locale_decode ($octets)
480		1434
481	Convert the given locale-encoded octets into a perl string.	1435	Convert the given locale-encoded octets into a perl string.
482		1436
		1437	=item $term->scr_xor_span ($beg_row, $beg_col, $end_row, $end_col[, $rstyle])
		1438
		1439	XORs the rendition values in the given span with the provided value
		1440	(default: C<RS_RVid>), which I<MUST NOT> contain font styles. Useful in
		1441	refresh hooks to provide effects similar to the selection.
		1442
		1443	=item $term->scr_xor_rect ($beg_row, $beg_col, $end_row, $end_col[, $rstyle1[, $rstyle2]])
		1444
		1445	Similar to C<scr_xor_span>, but xors a rectangle instead. Trailing
		1446	whitespace will additionally be xored with the C<$rstyle2>, which defaults
		1447	to C<RS_RVid | RS_Uline>, which removes reverse video again and underlines
		1448	it instead. Both styles I<MUST NOT> contain font styles.
		1449
		1450	=item $term->scr_bell
		1451
		1452	Ring the bell!
		1453
		1454	=item $term->scr_add_lines ($string)
		1455
		1456	Write the given text string to the screen, as if output by the application
		1457	running inside the terminal. It may not contain command sequences (escape
		1458	codes), but is free to use line feeds, carriage returns and tabs. The
		1459	string is a normal text string, not in locale-dependent encoding.
		1460
		1461	Normally its not a good idea to use this function, as programs might be
		1462	confused by changes in cursor position or scrolling. Its useful inside a
		1463	C<on_add_lines> hook, though.
		1464
		1465	=item $term->scr_change_screen ($screen)
		1466
		1467	Switch to given screen - 0 primary, 1 secondary.
		1468
		1469	=item $term->cmd_parse ($octets)
		1470
		1471	Similar to C<scr_add_lines>, but the argument must be in the
		1472	locale-specific encoding of the terminal and can contain command sequences
		1473	(escape codes) that will be interpreted.
		1474
483	=item $term->tt_write ($octets)	1475	=item $term->tt_write ($octets)
484		1476
485	Write the octets given in C<$data> to the tty (i.e. as program input). To	1477	Write the octets given in C<$octets> to the tty (i.e. as program input). To
486	pass characters instead of octets, you should convert your strings first	1478	pass characters instead of octets, you should convert your strings first
487	to the locale-specific encoding using C<< $term->locale_encode >>.	1479	to the locale-specific encoding using C<< $term->locale_encode >>.
488		1480
		1481	=item $term->tt_write_user_input ($octets)
		1482
		1483	Like C<tt_write>, but should be used when writing strings in response to
		1484	the user pressing a key, to invokes the additional actions requested by
		1485	the user for that case (C<tt_write> doesn't do that).
		1486
		1487	The typical use case would be inside C<on_action> hooks.
		1488
		1489	=item $term->tt_paste ($octets)
		1490
		1491	Write the octets given in C<$octets> to the tty as a paste, converting NL to
		1492	CR and bracketing the data with control sequences if bracketed paste mode
		1493	is set.
		1494
		1495	=item $old_events = $term->pty_ev_events ([$new_events])
		1496
		1497	Replaces the event mask of the pty watcher by the given event mask. Can
		1498	be used to suppress input and output handling to the pty/tty. See the
		1499	description of C<< urxvt::timer->events >>. Make sure to always restore
		1500	the previous value.
		1501
		1502	=item $fd = $term->pty_fd
		1503
		1504	Returns the master file descriptor for the pty in use, or C<-1> if no pty
		1505	is used.
		1506
		1507	=item $windowid = $term->parent
		1508
		1509	Return the window id of the toplevel window.
		1510
		1511	=item $windowid = $term->vt
		1512
		1513	Return the window id of the terminal window.
		1514
		1515	=item $term->vt_emask_add ($x_event_mask)
		1516
		1517	Adds the specified events to the vt event mask. Useful e.g. when you want
		1518	to receive pointer events all the times:
		1519
		1520	$term->vt_emask_add (urxvt::PointerMotionMask);
		1521
		1522	=item $term->set_urgency ($set)
		1523
		1524	Enable/disable the urgency hint on the toplevel window.
		1525
		1526	=item $term->focus_in
		1527
		1528	=item $term->focus_out
		1529
		1530	=item $term->key_press ($state, $keycode[, $time])
		1531
		1532	=item $term->key_release ($state, $keycode[, $time])
		1533
		1534	Deliver various fake events to to terminal.
		1535
		1536	=item $window_width = $term->width
		1537
		1538	=item $window_height = $term->height
		1539
		1540	=item $font_width = $term->fwidth
		1541
		1542	=item $font_height = $term->fheight
		1543
		1544	=item $font_ascent = $term->fbase
		1545
489	=item $nrow = $term->nrow	1546	=item $terminal_rows = $term->nrow
490		1547
491	=item $ncol = $term->ncol	1548	=item $terminal_columns = $term->ncol
492		1549
493	Return the number of rows/columns of the terminal window (i.e. as	1550	=item $has_focus = $term->focus
494	specified by C<-geometry>, excluding any scrollback).
495		1551
		1552	=item $is_mapped = $term->mapped
		1553
		1554	=item $max_scrollback = $term->saveLines
		1555
		1556	=item $nrow_plus_saveLines = $term->total_rows
		1557
		1558	=item $topmost_scrollback_row = $term->top_row
		1559
		1560	Return various integers describing terminal characteristics.
		1561
		1562	=item $x_display = $term->display_id
		1563
		1564	Return the DISPLAY used by rxvt-unicode.
		1565
		1566	=item $lc_ctype = $term->locale
		1567
		1568	Returns the LC_CTYPE category string used by this rxvt-unicode.
		1569
496	=item $nsaved = $term->nsaved	1570	=item $env = $term->env
497		1571
498	Returns the number of lines in the scrollback buffer.	1572	Returns a copy of the environment in effect for the terminal as a hashref
		1573	similar to C<\%ENV>.
		1574
		1575	=item @envv = $term->envv
		1576
		1577	Returns the environment as array of strings of the form C<VAR=VALUE>.
		1578
		1579	=item @argv = $term->argv
		1580
		1581	Return the argument vector as this terminal, similar to @ARGV, but
		1582	includes the program name as first element.
		1583
		1584	=cut
		1585
		1586	sub env {
		1587	+{ map /^([^=]+)(?:=(.*))?$/s && ($1 => $2), $_[0]->envv }
		1588	}
		1589
		1590	=item $modifiermask = $term->ModLevel3Mask
		1591
		1592	=item $modifiermask = $term->ModMetaMask
		1593
		1594	=item $modifiermask = $term->ModNumLockMask
		1595
		1596	Return the modifier masks corresponding to the "ISO Level 3 Shift" (often
		1597	AltGr), the meta key (often Alt) and the num lock key, if applicable.
		1598
		1599	=item $screen = $term->current_screen
		1600
		1601	Returns the currently displayed screen (0 primary, 1 secondary).
		1602
		1603	=item $cursor_is_hidden = $term->hidden_cursor
		1604
		1605	Returns whether the cursor is currently hidden or not.
499		1606
500	=item $view_start = $term->view_start ([$newvalue])	1607	=item $view_start = $term->view_start ([$newvalue])
501		1608
502	Returns the negative row number of the topmost line. Minimum value is	1609	Returns the row number of the topmost displayed line. Maximum value is
503	C<0>, which displays the normal terminal contents. Larger values scroll	1610	C<0>, which displays the normal terminal contents. Lower values scroll
504	this many lines into the scrollback buffer.	1611	this many lines into the scrollback buffer.
505		1612
506	=item $term->want_refresh	1613	=item $term->want_refresh
507		1614
508	Requests a screen refresh. At the next opportunity, rxvt-unicode will	1615	Requests a screen refresh. At the next opportunity, rxvt-unicode will
…		…
511		1618
512	Used after changing terminal contents to display them.	1619	Used after changing terminal contents to display them.
513		1620
514	=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])	1621	=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])
515		1622
516	Returns the text of the entire row with number C<$row_number>. Row C<0>	1623	Returns the text of the entire row with number C<$row_number>. Row C<< $term->top_row >>
517	is the topmost terminal line, row C<< $term->$ncol-1 >> is the bottommost	1624	is the topmost terminal line, row C<< $term->nrow-1 >> is the bottommost
518	terminal line. The scrollback buffer starts at line C<-1> and extends to	1625	terminal line. Nothing will be returned if a nonexistent line
519	line C<< -$term->nsaved >>.	1626	is requested.
520		1627
521	If C<$new_text> is specified, it will replace characters in the current	1628	If C<$new_text> is specified, it will replace characters in the current
522	line, starting at column C<$start_col> (default C<0>), which is useful	1629	line, starting at column C<$start_col> (default C<0>), which is useful
523	to replace only parts of a line. The font index in the rendition will	1630	to replace only parts of a line. The font index in the rendition will
524	automatically be updated.	1631	automatically be updated.
525		1632
526	C<$text> is in a special encoding: tabs and wide characters that use more	1633	C<$text> is in a special encoding: tabs and wide characters that use more
527	than one cell when displayed are padded with urxvt::NOCHAR characters	1634	than one cell when displayed are padded with C<$urxvt::NOCHAR> (chr 65535)
528	(C<chr 65535>). Characters with combining characters and other characters	1635	characters. Characters with combining characters and other characters that
529	that do not fit into the normal tetx encoding will be replaced with	1636	do not fit into the normal text encoding will be replaced with characters
530	characters in the private use area.	1637	in the private use area.
531		1638
532	You have to obey this encoding when changing text. The advantage is	1639	You have to obey this encoding when changing text. The advantage is
533	that C<substr> and similar functions work on screen cells and not on	1640	that C<substr> and similar functions work on screen cells and not on
534	characters.	1641	characters.
535		1642
…		…
546		1653
547	See the section on RENDITION, above.	1654	See the section on RENDITION, above.
548		1655
549	=item $length = $term->ROW_l ($row_number[, $new_length])	1656	=item $length = $term->ROW_l ($row_number[, $new_length])
550		1657
551	Returns the number of screen cells that are in use ("the line length"). If	1658	Returns the number of screen cells that are in use ("the line
552	it is C<-1>, then the line is part of a multiple-row logical "line", which	1659	length"). Unlike the urxvt core, this returns C<< $term->ncol >> if the
553	means all characters are in use and it is continued on the next row.	1660	line is joined with the following one.
		1661
		1662	=item $bool = $term->is_longer ($row_number)
		1663
		1664	Returns true if the row is part of a multiple-row logical "line" (i.e.
		1665	joined with the following row), which means all characters are in use
		1666	and it is continued on the next row (and possibly a continuation of the
		1667	previous row(s)).
		1668
		1669	=item $line = $term->line ($row_number)
		1670
		1671	Create and return a new C<urxvt::line> object that stores information
		1672	about the logical line that row C<$row_number> is part of. It supports the
		1673	following methods:
		1674
		1675	=over 4
		1676
		1677	=item $text = $line->t ([$new_text])
		1678
		1679	Returns or replaces the full text of the line, similar to C<ROW_t>
		1680
		1681	=item $rend = $line->r ([$new_rend])
		1682
		1683	Returns or replaces the full rendition array of the line, similar to C<ROW_r>
		1684
		1685	=item $length = $line->l
		1686
		1687	Returns the length of the line in cells, similar to C<ROW_l>.
		1688
		1689	=item $rownum = $line->beg
		1690
		1691	=item $rownum = $line->end
		1692
		1693	Return the row number of the first/last row of the line, respectively.
		1694
		1695	=item $offset = $line->offset_of ($row, $col)
		1696
		1697	Returns the character offset of the given row|col pair within the logical
		1698	line. Works for rows outside the line, too, and returns corresponding
		1699	offsets outside the string.
		1700
		1701	=item ($row, $col) = $line->coord_of ($offset)
		1702
		1703	Translates a string offset into terminal coordinates again.
		1704
		1705	=back
		1706
		1707	=cut
		1708
		1709	sub line {
		1710	my ($self, $row) = @_;
		1711
		1712	my $maxrow = $self->nrow - 1;
		1713
		1714	my ($beg, $end) = ($row, $row);
		1715
		1716	--$beg while $self->ROW_is_longer ($beg - 1);
		1717	++$end while $self->ROW_is_longer ($end) && $end < $maxrow;
		1718
		1719	bless {
		1720	term => $self,
		1721	beg => $beg,
		1722	end => $end,
		1723	ncol => $self->ncol,
		1724	len => ($end - $beg) * $self->ncol + $self->ROW_l ($end),
		1725	}, urxvt::line::
		1726	}
		1727
		1728	sub urxvt::line::t {
		1729	my ($self) = @_;
		1730
		1731	if (@_ > 1) {
		1732	$self->{term}->ROW_t ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		1733	for $self->{beg} .. $self->{end};
		1734	}
		1735
		1736	defined wantarray &&
		1737	substr +(join "", map $self->{term}->ROW_t ($_), $self->{beg} .. $self->{end}),
		1738	0, $self->{len}
		1739	}
		1740
		1741	sub urxvt::line::r {
		1742	my ($self) = @_;
		1743
		1744	if (@_ > 1) {
		1745	$self->{term}->ROW_r ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		1746	for $self->{beg} .. $self->{end};
		1747	}
		1748
		1749	if (defined wantarray) {
		1750	my $rend = [
		1751	map @{ $self->{term}->ROW_r ($_) }, $self->{beg} .. $self->{end}
		1752	];
		1753	$#$rend = $self->{len} - 1;
		1754	return $rend;
		1755	}
		1756
		1757	()
		1758	}
		1759
		1760	sub urxvt::line::beg { $_[0]{beg} }
		1761	sub urxvt::line::end { $_[0]{end} }
		1762	sub urxvt::line::l { $_[0]{len} }
		1763
		1764	sub urxvt::line::offset_of {
		1765	my ($self, $row, $col) = @_;
		1766
		1767	($row - $self->{beg}) * $self->{ncol} + $col
		1768	}
		1769
		1770	sub urxvt::line::coord_of {
		1771	my ($self, $offset) = @_;
		1772
		1773	use integer;
		1774
		1775	(
		1776	$offset / $self->{ncol} + $self->{beg},
		1777	$offset % $self->{ncol}
		1778	)
		1779	}
554		1780
555	=item $text = $term->special_encode $string	1781	=item $text = $term->special_encode $string
556		1782
557	Converts a perl string into the special encoding used by rxvt-unicode,	1783	Converts a perl string into the special encoding used by rxvt-unicode,
558	where one character corresponds to one screen cell. See	1784	where one character corresponds to one screen cell. See
559	C<< $term->ROW_t >> for details.	1785	C<< $term->ROW_t >> for details.
560		1786
561	=item $string = $term->special_decode $text	1787	=item $string = $term->special_decode $text
562		1788
563	Converts rxvt-unicodes text reprsentation into a perl string. See	1789	Converts rxvt-unicodes text representation into a perl string. See
564	C<< $term->ROW_t >> for details.	1790	C<< $term->ROW_t >> for details.
565		1791
		1792	=item $success = $term->grab_button ($button, $modifiermask[, $window = $term->vt])
		1793
		1794	=item $term->ungrab_button ($button, $modifiermask[, $window = $term->vt])
		1795
		1796	Register/unregister a synchronous button grab. See the XGrabButton
		1797	manpage.
		1798
		1799	=item $success = $term->grab ($eventtime[, $sync])
		1800
		1801	Calls XGrabPointer and XGrabKeyboard in asynchronous (default) or
		1802	synchronous (C<$sync> is true). Also remembers the grab timestamp.
		1803
		1804	=item $term->allow_events_async
		1805
		1806	Calls XAllowEvents with AsyncBoth for the most recent grab.
		1807
		1808	=item $term->allow_events_sync
		1809
		1810	Calls XAllowEvents with SyncBoth for the most recent grab.
		1811
		1812	=item $term->allow_events_replay
		1813
		1814	Calls XAllowEvents with both ReplayPointer and ReplayKeyboard for the most
		1815	recent grab.
		1816
		1817	=item $term->ungrab
		1818
		1819	Calls XUngrabPointer and XUngrabKeyboard for the most recent grab. Is called automatically on
		1820	evaluation errors, as it is better to lose the grab in the error case as
		1821	the session.
		1822
		1823	=item $atom = $term->XInternAtom ($atom_name[, $only_if_exists])
		1824
		1825	=item $atom_name = $term->XGetAtomName ($atom)
		1826
		1827	=item @atoms = $term->XListProperties ($window)
		1828
		1829	=item ($type,$format,$octets) = $term->XGetWindowProperty ($window, $property)
		1830
		1831	=item $term->XChangeProperty ($window, $property, $type, $format, $octets)
		1832
		1833	=item $term->XDeleteProperty ($window, $property)
		1834
		1835	=item $window = $term->DefaultRootWindow
		1836
		1837	=item $term->XReparentWindow ($window, $parent, [$x, $y])
		1838
		1839	=item $term->XMapWindow ($window)
		1840
		1841	=item $term->XUnmapWindow ($window)
		1842
		1843	=item $term->XMoveResizeWindow ($window, $x, $y, $width, $height)
		1844
		1845	=item ($x, $y, $child_window) = $term->XTranslateCoordinates ($src, $dst, $x, $y)
		1846
		1847	=item $term->XChangeInput ($window, $add_events[, $del_events])
		1848
		1849	=item $keysym = $term->XStringToKeysym ($string)
		1850
		1851	=item $string = $term->XKeysymToString ($keysym)
		1852
		1853	Various X or X-related functions. The C<$term> object only serves as
		1854	the source of the display, otherwise those functions map more-or-less
		1855	directly onto the X functions of the same name.
		1856
566	=back	1857	=back
		1858
		1859	=cut
		1860
		1861	package urxvt::popup;
		1862
		1863	=head2 The C<urxvt::popup> Class
		1864
		1865	=over 4
		1866
		1867	=cut
		1868
		1869	sub add_item {
		1870	my ($self, $item) = @_;
		1871
		1872	$item->{rend}{normal} = "\x1b[0;30;47m" unless exists $item->{rend}{normal};
		1873	$item->{rend}{hover} = "\x1b[0;30;46m" unless exists $item->{rend}{hover};
		1874	$item->{rend}{active} = "\x1b[m" unless exists $item->{rend}{active};
		1875
		1876	$item->{render} ||= sub { $_[0]{text} };
		1877
		1878	push @{ $self->{item} }, $item;
		1879	}
		1880
		1881	=item $popup->add_title ($title)
		1882
		1883	Adds a non-clickable title to the popup.
		1884
		1885	=cut
		1886
		1887	sub add_title {
		1888	my ($self, $title) = @_;
		1889
		1890	$self->add_item ({
		1891	rend => { normal => "\x1b[38;5;11;44m", hover => "\x1b[38;5;11;44m", active => "\x1b[38;5;11;44m" },
		1892	text => $title,
		1893	activate => sub { },
		1894	});
		1895	}
		1896
		1897	=item $popup->add_separator ([$sepchr])
		1898
		1899	Creates a separator, optionally using the character given as C<$sepchr>.
		1900
		1901	=cut
		1902
		1903	sub add_separator {
		1904	my ($self, $sep) = @_;
		1905
		1906	$sep ||= "=";
		1907
		1908	$self->add_item ({
		1909	rend => { normal => "\x1b[0;30;47m", hover => "\x1b[0;30;47m", active => "\x1b[0;30;47m" },
		1910	text => "",
		1911	render => sub { $sep x $self->{term}->ncol },
		1912	activate => sub { },
		1913	});
		1914	}
		1915
		1916	=item $popup->add_button ($text, $cb)
		1917
		1918	Adds a clickable button to the popup. C<$cb> is called whenever it is
		1919	selected.
		1920
		1921	=cut
		1922
		1923	sub add_button {
		1924	my ($self, $text, $cb) = @_;
		1925
		1926	$self->add_item ({ type => "button", text => $text, activate => $cb});
		1927	}
		1928
		1929	=item $popup->add_toggle ($text, $initial_value, $cb)
		1930
		1931	Adds a toggle/checkbox item to the popup. The callback gets called
		1932	whenever it gets toggled, with a boolean indicating its new value as its
		1933	first argument.
		1934
		1935	=cut
		1936
		1937	sub add_toggle {
		1938	my ($self, $text, $value, $cb) = @_;
		1939
		1940	my $item; $item = {
		1941	type => "button",
		1942	text => " $text",
		1943	value => $value,
		1944	render => sub { ($_[0]{value} ? "* " : " ") . $text },
		1945	activate => sub { $cb->($_[1]{value} = !$_[1]{value}); },
		1946	};
		1947
		1948	$self->add_item ($item);
		1949	}
		1950
		1951	=item $popup->show
		1952
		1953	Displays the popup (which is initially hidden).
		1954
		1955	=cut
		1956
		1957	sub show {
		1958	my ($self) = @_;
		1959
		1960	local $urxvt::popup::self = $self;
		1961
		1962	my $env = $self->{term}->env;
		1963	# we can't hope to reproduce the locale algorithm, so nuke LC_ALL and set LC_CTYPE.
		1964	delete $env->{LC_ALL};
		1965	$env->{LC_CTYPE} = $self->{term}->locale;
		1966
		1967	my $term = urxvt::term->new (
		1968	$env, "popup",
		1969	"--perl-lib" => "", "--perl-ext-common" => "",
		1970	"-pty-fd" => -1, "-sl" => 0,
		1971	"-b" => 1, "-bd" => "grey80", "-bl", "-override-redirect",
		1972	"--transient-for" => $self->{term}->parent,
		1973	"-display" => $self->{term}->display_id,
		1974	"-pe" => "urxvt-popup",
		1975	) or die "unable to create popup window\n";
		1976
		1977	unless (delete $term->{urxvt_popup_init_done}) {
		1978	$term->ungrab;
		1979	$term->destroy;
		1980	die "unable to initialise popup window\n";
		1981	}
		1982	}
		1983
		1984	sub DESTROY {
		1985	my ($self) = @_;
		1986
		1987	delete $self->{term}{_destroy}{$self};
		1988	$self->{term}->ungrab;
		1989	}
		1990
		1991	=back
		1992
		1993	=cut
		1994
		1995	package urxvt::watcher;
567		1996
568	=head2 The C<urxvt::timer> Class	1997	=head2 The C<urxvt::timer> Class
569		1998
570	This class implements timer watchers/events. Time is represented as a	1999	This class implements timer watchers/events. Time is represented as a
571	fractional number of seconds since the epoch. Example:	2000	fractional number of seconds since the epoch. Example:
572		2001
573	# create a digital clock display in upper right corner	2002	$term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
574	$term->{timer} = urxvt::timer	2003	$term->{timer} = urxvt::timer
575	->new	2004	->new
576	->start (urxvt::NOW)	2005	->interval (1)
577	->cb (sub {	2006	->cb (sub {
578	my ($timer) = @_;
579	my $time = $timer->at;
580	$timer->start ($time + 1);
581	$self->scr_overlay (-1, 0,	2007	$term->{overlay}->set (0, 0,
582	POSIX::strftime "%H:%M:%S", localtime $time);	2008	sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
583	});	2009	});
584		2010
585	=over 4	2011	=over 4
586		2012
587	=item $timer = new urxvt::timer	2013	=item $timer = new urxvt::timer
588		2014
589	Create a new timer object in stopped state.	2015	Create a new timer object in started state. It is scheduled to fire
		2016	immediately.
590		2017
591	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })	2018	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })
592		2019
593	Set the callback to be called when the timer triggers.	2020	Set the callback to be called when the timer triggers.
594		2021
595	=item $tstamp = $timer->at
596
597	Return the time this watcher will fire next.
598
599	=item $timer = $timer->set ($tstamp)	2022	=item $timer = $timer->set ($tstamp[, $interval])
600		2023
601	Set the time the event is generated to $tstamp.	2024	Set the time the event is generated to $tstamp (and optionally specifies a
		2025	new $interval).
		2026
		2027	=item $timer = $timer->interval ($interval)
		2028
		2029	By default (and when C<$interval> is C<0>), the timer will automatically
		2030	stop after it has fired once. If C<$interval> is non-zero, then the timer
		2031	is automatically rescheduled at the given intervals.
602		2032
603	=item $timer = $timer->start	2033	=item $timer = $timer->start
604		2034
605	Start the timer.	2035	Start the timer.
606		2036
607	=item $timer = $timer->start ($tstamp)	2037	=item $timer = $timer->start ($tstamp[, $interval])
608		2038
609	Set the event trigger time to C<$tstamp> and start the timer.	2039	Set the event trigger time to C<$tstamp> and start the timer. Optionally
		2040	also replaces the interval.
		2041
		2042	=item $timer = $timer->after ($delay[, $interval])
		2043
		2044	Like C<start>, but sets the expiry timer to c<urxvt::NOW + $delay>.
610		2045
611	=item $timer = $timer->stop	2046	=item $timer = $timer->stop
612		2047
613	Stop the timer.	2048	Stop the timer.
614		2049
…		…
620		2055
621	$term->{socket} = ...	2056	$term->{socket} = ...
622	$term->{iow} = urxvt::iow	2057	$term->{iow} = urxvt::iow
623	->new	2058	->new
624	->fd (fileno $term->{socket})	2059	->fd (fileno $term->{socket})
625	->events (1) # wait for read data	2060	->events (urxvt::EV_READ)
626	->start	2061	->start
627	->cb (sub {	2062	->cb (sub {
628	my ($iow, $revents) = @_;	2063	my ($iow, $revents) = @_;
629	# $revents must be 1 here, no need to check	2064	# $revents must be 1 here, no need to check
630	sysread $term->{socket}, my $buf, 8192	2065	sysread $term->{socket}, my $buf, 8192
…		…
643	Set the callback to be called when io events are triggered. C<$reventmask>	2078	Set the callback to be called when io events are triggered. C<$reventmask>
644	is a bitset as described in the C<events> method.	2079	is a bitset as described in the C<events> method.
645		2080
646	=item $iow = $iow->fd ($fd)	2081	=item $iow = $iow->fd ($fd)
647		2082
648	Set the filedescriptor (not handle) to watch.	2083	Set the file descriptor (not handle) to watch.
649		2084
650	=item $iow = $iow->events ($eventmask)	2085	=item $iow = $iow->events ($eventmask)
651		2086
652	Set the event mask to watch. Bit #0 (value C<1>) enables watching for read	2087	Set the event mask to watch. The only allowed values are
653	data, Bit #1 (value C<2>) enables watching for write data.	2088	C<urxvt::EV_READ> and C<urxvt::EV_WRITE>, which might be ORed
		2089	together, or C<urxvt::EV_NONE>.
654		2090
655	=item $iow = $iow->start	2091	=item $iow = $iow->start
656		2092
657	Start watching for requested events on the given handle.	2093	Start watching for requested events on the given handle.
658		2094
659	=item $iow = $iow->stop	2095	=item $iow = $iow->stop
660		2096
661	Stop watching for events on the given filehandle.	2097	Stop watching for events on the given file handle.
		2098
		2099	=back
		2100
		2101	=head2 The C<urxvt::iw> Class
		2102
		2103	This class implements idle watchers, that get called automatically when
		2104	the process is idle. They should return as fast as possible, after doing
		2105	some useful work.
		2106
		2107	=over 4
		2108
		2109	=item $iw = new urxvt::iw
		2110
		2111	Create a new idle watcher object in stopped state.
		2112
		2113	=item $iw = $iw->cb (sub { my ($iw) = @_; ... })
		2114
		2115	Set the callback to be called when the watcher triggers.
		2116
		2117	=item $timer = $timer->start
		2118
		2119	Start the watcher.
		2120
		2121	=item $timer = $timer->stop
		2122
		2123	Stop the watcher.
		2124
		2125	=back
		2126
		2127	=head2 The C<urxvt::pw> Class
		2128
		2129	This class implements process watchers. They create an event whenever a
		2130	process exits, after which they stop automatically.
		2131
		2132	my $pid = fork;
		2133	...
		2134	$term->{pw} = urxvt::pw
		2135	->new
		2136	->start ($pid)
		2137	->cb (sub {
		2138	my ($pw, $exit_status) = @_;
		2139	...
		2140	});
		2141
		2142	=over 4
		2143
		2144	=item $pw = new urxvt::pw
		2145
		2146	Create a new process watcher in stopped state.
		2147
		2148	=item $pw = $pw->cb (sub { my ($pw, $exit_status) = @_; ... })
		2149
		2150	Set the callback to be called when the timer triggers.
		2151
		2152	=item $pw = $timer->start ($pid)
		2153
		2154	Tells the watcher to start watching for process C<$pid>.
		2155
		2156	=item $pw = $pw->stop
		2157
		2158	Stop the watcher.
662		2159
663	=back	2160	=back
664		2161
665	=head1 ENVIRONMENT	2162	=head1 ENVIRONMENT
666		2163
…		…
669	This variable controls the verbosity level of the perl extension. Higher	2166	This variable controls the verbosity level of the perl extension. Higher
670	numbers indicate more verbose output.	2167	numbers indicate more verbose output.
671		2168
672	=over 4	2169	=over 4
673		2170
674	=item 0 - only fatal messages	2171	=item == 0 - fatal messages
675		2172
676	=item 3 - script loading and management	2173	=item >= 3 - script loading and management
677		2174
678	=item 10 - all events received	2175	=item >=10 - all called hooks
		2176
		2177	=item >=11 - hook return values
679		2178
680	=back	2179	=back
681		2180
682	=head1 AUTHOR	2181	=head1 AUTHOR
683		2182
684	Marc Lehmann <pcg@goof.com>	2183	Marc Lehmann <schmorp@schmorp.de>
685	http://software.schmorp.de/pkg/rxvt-unicode	2184	http://software.schmorp.de/pkg/rxvt-unicode
686		2185
687	=cut	2186	=cut
688		2187
689	1	2188	1
		2189
		2190	# vim: sw=3:

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