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Revision 1.6 by root, Mon Jan 2 18:20:23 2006 UTC vs.
Revision 1.103 by root, Wed Jan 18 11:05:09 2006 UTC

		1	=encoding utf8
		2
1	=head1 NAME	3	=head1 NAME
2		4
3	rxvtperl - rxvt-unicode's embedded perl interpreter	5	@@RXVT_NAME@@perl - rxvt-unicode's embedded perl interpreter
4		6
5	=head1 SYNOPSIS	7	=head1 SYNOPSIS
6		8
7	* Put your scripts into F<@@RXVT_LIBDIR@@/urxvt/perl-ext/>, they will be loaded automatically.	9	# create a file grab_test in $HOME:
8
9	* Scripts are evaluated in a 'use strict' and 'use utf8' environment, and
10	thus must be encoded as UTF-8.
11		10
12	sub on_sel_grab {	11	sub on_sel_grab {
13	warn "you selected ", $_[0]->selection;	12	warn "you selected ", $_[0]->selection;
14	()	13	()
15	}	14	}
16		15
17	1	16	# start a @@RXVT_NAME@@ using it:
		17
		18	@@RXVT_NAME@@ --perl-lib $HOME -pe grab_test
18		19
19	=head1 DESCRIPTION	20	=head1 DESCRIPTION
20		21
21	On startup, @@RXVT_NAME@@ will scan F<@@RXVT_LIBDIR@@/urxvt/perl-ext/>	22	Everytime a terminal object gets created, extension scripts specified via
22	for files and will load them. Everytime a terminal object gets created,	23	the C<perl> resource are loaded and associated with it.
23	the directory specified by the C<perl-lib> resource will be additionally	24
24	scanned.	25	Scripts are compiled in a 'use strict' and 'use utf8' environment, and
		26	thus must be encoded as UTF-8.
25		27
26	Each script will only ever be loaded once, even in @@RXVT_NAME@@d, where	28	Each script will only ever be loaded once, even in @@RXVT_NAME@@d, where
27	scripts will be shared for all terminals.	29	scripts will be shared (but not enabled) for all terminals.
28		30
29	Hooks in scripts specified by C<perl-lib> will only be called for the	31	=head1 PREPACKAGED EXTENSIONS
30	terminals created with that specific option value.	32
		33	This section describes the extensions delivered with this release. You can
		34	find them in F<@@RXVT_LIBDIR@@/urxvt/perl/>.
		35
		36	You can activate them like this:
		37
		38	@@RXVT_NAME@@ -pe <extensionname>
		39
		40	=over 4
		41
		42	=item selection (enabled by default)
		43
		44	(More) intelligent selection. This extension tries to be more intelligent
		45	when the user extends selections (double-click and further clicks). Right
		46	now, it tries to select words, urls and complete shell-quoted
		47	arguments, which is very convenient, too, if your F<ls> supports
		48	C<--quoting-style=shell>.
		49
		50	A double-click usually selects the word under the cursor, further clicks
		51	will enlarge the selection.
		52
		53	The selection works by trying to match a number of regexes and displaying
		54	them in increasing order of length. You can add your own regexes by
		55	specifying resources of the form:
		56
		57	URxvt.selection.pattern-0: perl-regex
		58	URxvt.selection.pattern-1: perl-regex
		59	...
		60
		61	The index number (0, 1...) must not have any holes, and each regex must
		62	contain at least one pair of capturing parentheses, which will be used for
		63	the match. For example, the followign adds a regex that matches everything
		64	between two vertical bars:
		65
		66	URxvt.selection.pattern-0: \\|([^|]+)\\|
		67
		68	You can look at the source of the selection extension to see more
		69	interesting uses, such as parsing a line from beginning to end.
		70
		71	This extension also offers following bindable keyboard commands:
		72
		73	=over 4
		74
		75	=item rot13
		76
		77	Rot-13 the selection when activated. Used via keyboard trigger:
		78
		79	URxvt.keysym.C-M-r: perl:selection:rot13
		80
		81	=back
		82
		83	=item option-popup (enabled by default)
		84
		85	Binds a popup menu to Ctrl-Button2 that lets you toggle (some) options at
		86	runtime.
		87
		88	=item selection-popup (enabled by default)
		89
		90	Binds a popup menu to Ctrl-Button3 that lets you convert the selection
		91	text into various other formats/action (such as uri unescaping, perl
		92	evalution, web-browser starting etc.), depending on content.
		93
		94	Other extensions can extend this popup menu by pushing a code reference onto
		95	C<@urxvt::ext::selection_popup::hook>, that is called whenever the popup is displayed.
		96
		97	It's sole argument is the popup menu, which can be modified. The selection
		98	is in C<$_>, which can be used to decide wether to add something or not.
		99	It should either return nothing or a string and a code reference. The
		100	string will be used as button text and the code reference will be called
		101	when the button gets activated and should transform C<$_>.
		102
		103	The following will add an entry C<a to b> that transforms all C<a>s in
		104	the selection to C<b>s, but only if the selection currently contains any
		105	C<a>s:
		106
		107	push urxvt::ext::selection_popup::hook, sub {
		108	/a/ ? ("a to be" => sub { s/a/b/g }
		109	: ()
		110	};
		111
		112	=item searchable-scrollback<hotkey> (enabled by default)
		113
		114	Adds regex search functionality to the scrollback buffer, triggered
		115	by a hotkey (default: C<M-s>). While in search mode, normal terminal
		116	input/output is suspended and a regex is displayed at the bottom of the
		117	screen.
		118
		119	Inputting characters appends them to the regex and continues incremental
		120	search. C<BackSpace> removes a character from the regex, C<Up> and C<Down>
		121	search upwards/downwards in the scrollback buffer, C<End> jumps to the
		122	bottom. C<Escape> leaves search mode and returns to the point where search
		123	was started, while C<Enter> or C<Return> stay at the current position and
		124	additionally stores the first match in the current line into the primary
		125	selection.
		126
		127	=item selection-autotransform
		128
		129	This selection allows you to do automatic transforms on a selection
		130	whenever a selection is made.
		131
		132	It works by specifying perl snippets (most useful is a single C<s///>
		133	operator) that modify C<$_> as resources:
		134
		135	URxvt.selection-autotransform.0: transform
		136	URxvt.selection-autotransform.1: transform
		137	...
		138
		139	For example, the following will transform selections of the form
		140	C<filename:number>, often seen in compiler messages, into C<vi +$filename
		141	$word>:
		142
		143	URxvt.selection-autotransform.0: s/^([^:[:space:]]+):(\\d+):?$/vi +$2 \\Q$1\\E\\x0d/
		144
		145	And this example matches the same,but replaces it with vi-commands you can
		146	paste directly into your (vi :) editor:
		147
		148	URxvt.selection-autotransform.0: s/^([^:[:space:]]+(\\d+):?$/\\x1b:e \\Q$1\\E\\x0d:$2\\x0d/
		149
		150	Of course, this can be modified to suit your needs and your editor :)
		151
		152	To expand the example above to typical perl error messages ("XXX at
		153	FILENAME line YYY."), you need a slightly more elaborate solution:
		154
		155	URxvt.selection.pattern-0: ( at .*? line \\d+\\.)
		156	URxvt.selection-autotransform.0: s/^ at (.*?) line (\\d+)\\.$/\x1b:e \\Q$1\E\\x0d:$2\\x0d/
		157
		158	The first line tells the selection code to treat the unchanging part of
		159	every error message as a selection pattern, and the second line transforms
		160	the message into vi commands to load the file.
		161
		162	=item mark-urls
		163
		164	Uses per-line display filtering (C<on_line_update>) to underline urls and
		165	make them clickable. When middle-clicked, the program specified in the
		166	resource C<urlLauncher> (default C<x-www-browser>) will be started with
		167	the URL as first argument.
		168
		169	=item block-graphics-to-ascii
		170
		171	A not very useful example of filtering all text output to the terminal,
		172	by replacing all line-drawing characters (U+2500 .. U+259F) by a
		173	similar-looking ascii character.
		174
		175	=item digital-clock
		176
		177	Displays a digital clock using the built-in overlay.
		178
		179	=item example-refresh-hooks
		180
		181	Displays a very simple digital clock in the upper right corner of the
		182	window. Illustrates overwriting the refresh callbacks to create your own
		183	overlays or changes.
		184
		185	=item selection-pastebin
		186
		187	This is a little rarely useful extension that Uploads the selection as
		188	textfile to a remote site (or does other things). (The implementation is
		189	not currently secure for use in a multiuser environment as it writes to
		190	F</tmp> directly.).
		191
		192	It listens to the C<selection-pastebin:remote-pastebin> keyboard command,
		193	i.e.
		194
		195	URxvt.keysym.C-M-e: perl:selection-pastebin:remote-pastebin
		196
		197	Pressing this combination runs a command with C<%> replaced by the name of
		198	the textfile. This command can be set via a resource:
		199
		200	URxvt.selection-pastebin.cmd: rsync -apP % ruth:/var/www/www.ta-sa.org/files/txt/.
		201
		202	And the default is likely not useful to anybody but the few people around
		203	here :)
		204
		205	The name of the textfile is the hex encoded md5 sum of the selection, so
		206	the same content should lead to the same filename.
		207
		208	After a successful upload the selection will be replaced by the text given
		209	in the C<selection-pastebin-url> resource (again, the % is the placeholder
		210	for the filename):
		211
		212	URxvt.selection-pastebin.url: http://www.ta-sa.org/files/txt/%
		213
		214	=back
		215
		216	=head1 API DOCUMENTATION
31		217
32	=head2 General API Considerations	218	=head2 General API Considerations
33		219
34	All objects (such as terminals, time watchers etc.) are typical	220	All objects (such as terminals, time watchers etc.) are typical
35	reference-to-hash objects. The hash can be used to store anything you	221	reference-to-hash objects. The hash can be used to store anything you
36	like. The only reserved member is C<_ptr>, which must not be changed.	222	like. All members starting with an underscore (such as C<_ptr> or
		223	C<_hook>) are reserved for internal uses and B<MUST NOT> be accessed or
		224	modified).
37		225
38	When objects are destroyed on the C++ side, the perl object hashes are	226	When objects are destroyed on the C++ side, the perl object hashes are
39	emptied, so its best to store related objects such as time watchers and	227	emptied, so its best to store related objects such as time watchers and
40	the like inside the terminal object so they get destroyed as soon as the	228	the like inside the terminal object so they get destroyed as soon as the
41	terminal is destroyed.	229	terminal is destroyed.
42		230
		231	Argument names also often indicate the type of a parameter. Here are some
		232	hints on what they mean:
		233
		234	=over 4
		235
		236	=item $text
		237
		238	Rxvt-unicodes special way of encoding text, where one "unicode" character
		239	always represents one screen cell. See L<ROW_t> for a discussion of this format.
		240
		241	=item $string
		242
		243	A perl text string, with an emphasis on I<text>. It can store all unicode
		244	characters and is to be distinguished with text encoded in a specific
		245	encoding (often locale-specific) and binary data.
		246
		247	=item $octets
		248
		249	Either binary data or - more common - a text string encoded in a
		250	locale-specific way.
		251
		252	=back
		253
		254	=head2 Extension Objects
		255
		256	Very perl extension is a perl class. A separate perl object is created
		257	for each terminal and each extension and passed as the first parameter to
		258	hooks. So extensions can use their C<$self> object without having to think
		259	about other extensions, with the exception of methods and members that
		260	begin with an underscore character C<_>: these are reserved for internal
		261	use.
		262
		263	Although it isn't a C<urxvt::term> object, you can call all methods of the
		264	C<urxvt::term> class on this object.
		265
		266	It has the following methods and data members:
		267
		268	=over 4
		269
		270	=item $urxvt_term = $self->{term}
		271
		272	Returns the C<urxvt::term> object associated with this instance of the
		273	extension. This member I<must not> be changed in any way.
		274
		275	=item $self->enable ($hook_name => $cb, [$hook_name => $cb..])
		276
		277	Dynamically enable the given hooks (named without the C<on_> prefix) for
		278	this extension, replacing any previous hook. This is useful when you want
		279	to overwrite time-critical hooks only temporarily.
		280
		281	=item $self->disable ($hook_name[, $hook_name..])
		282
		283	Dynamically disable the given hooks.
		284
		285	=back
		286
43	=head2 Hooks	287	=head2 Hooks
44		288
45	The following subroutines can be declared in loaded scripts, and will be called	289	The following subroutines can be declared in extension files, and will be
46	whenever the relevant event happens.	290	called whenever the relevant event happens.
47		291
		292	The first argument passed to them is an extension oject as described in
		293	the in the C<Extension Objects> section.
		294
48	All of them must return a boolean value. If it is true, then the event	295	B<All> of these hooks must return a boolean value. If it is true, then the
49	counts as being I<consumed>, and the invocation of other hooks is skipped,	296	event counts as being I<consumed>, and the invocation of other hooks is
50	and the relevant action might not be carried out by the C++ code.	297	skipped, and the relevant action might not be carried out by the C++ code.
51		298
52	When in doubt, return a false value (preferably C<()>).	299	I<< When in doubt, return a false value (preferably C<()>). >>
53		300
54	=over 4	301	=over 4
55		302
56	=item on_init $term	303	=item on_init $term
57		304
58	Called after a new terminal object has been initialized, but before	305	Called after a new terminal object has been initialized, but before
59	windows are created or the command gets run.	306	windows are created or the command gets run. Most methods are unsafe to
		307	call or deliver senseless data, as terminal size and other characteristics
		308	have not yet been determined. You can safely query and change resources,
		309	though.
60		310
61	=item on_reset $term	311	=item on_reset $term
62		312
63	Called after the screen is "reset" for any reason, such as resizing or	313	Called after the screen is "reset" for any reason, such as resizing or
64	control sequences. Here is where you can react on changes to size-related	314	control sequences. Here is where you can react on changes to size-related
…		…
84	requested from the server. The selection text can be queried and changed	334	requested from the server. The selection text can be queried and changed
85	by calling C<< $term->selection >>.	335	by calling C<< $term->selection >>.
86		336
87	Returning a true value aborts selection grabbing. It will still be hilighted.	337	Returning a true value aborts selection grabbing. It will still be hilighted.
88		338
89	=item on_focus_in $term	339	=item on_sel_extend $term
90		340
91	Called whenever the window gets the keyboard focus, before urxvt does	341	Called whenever the user tries to extend the selection (e.g. with a double
92	focus in processing.	342	click) and is either supposed to return false (normal operation), or
		343	should extend the selection itelf and return true to suppress the built-in
		344	processing. This can happen multiple times, as long as the callback
		345	returns true, it will be called on every further click by the user and is
		346	supposed to enlarge the selection more and more, if possible.
93		347
94	=item on_focus_out $term	348	See the F<selection> example extension.
95
96	Called wheneever the window loses keyboard focus, before urxvt does focus
97	out processing.
98		349
99	=item on_view_change $term, $offset	350	=item on_view_change $term, $offset
100		351
101	Called whenever the view offset changes, i..e the user or program	352	Called whenever the view offset changes, i..e the user or program
102	scrolls. Offset C<0> means display the normal terminal, positive values	353	scrolls. Offset C<0> means display the normal terminal, positive values
…		…
110		361
111	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,	362	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,
112	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total	363	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total
113	number of lines that will be in the scrollback buffer.	364	number of lines that will be in the scrollback buffer.
114		365
115	=item on_tty_activity $term *NYI*	366	=item on_osc_seq $term, $string
116		367
117	Called whenever the program(s) running in the urxvt window send output.	368	Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =
		369	operating system command) is processed. Cursor position and other state
		370	information is up-to-date when this happens. For interoperability, the
		371	string should start with the extension name and a colon, to distinguish
		372	it from commands for other extensions, and this might be enforced in the
		373	future.
		374
		375	Be careful not ever to trust (in a security sense) the data you receive,
		376	as its source can not easily be controleld (e-mail content, messages from
		377	other users on the same system etc.).
		378
		379	=item on_add_lines $term, $string
		380
		381	Called whenever text is about to be output, with the text as argument. You
		382	can filter/change and output the text yourself by returning a true value
		383	and calling C<< $term->scr_add_lines >> yourself. Please note that this
		384	might be very slow, however, as your hook is called for B<all> text being
		385	output.
		386
		387	=item on_tt_write $term, $octets
		388
		389	Called whenever some data is written to the tty/pty and can be used to
		390	suppress or filter tty input.
		391
		392	=item on_line_update $term, $row
		393
		394	Called whenever a line was updated or changed. Can be used to filter
		395	screen output (e.g. underline urls or other useless stuff). Only lines
		396	that are being shown will be filtered, and, due to performance reasons,
		397	not always immediately.
		398
		399	The row number is always the topmost row of the line if the line spans
		400	multiple rows.
		401
		402	Please note that, if you change the line, then the hook might get called
		403	later with the already-modified line (e.g. if unrelated parts change), so
		404	you cannot just toggle rendition bits, but only set them.
118		405
119	=item on_refresh_begin $term	406	=item on_refresh_begin $term
120		407
121	Called just before the screen gets redrawn. Can be used for overlay	408	Called just before the screen gets redrawn. Can be used for overlay
122	or similar effects by modify terminal contents in refresh_begin, and	409	or similar effects by modify terminal contents in refresh_begin, and
…		…
125		412
126	=item on_refresh_end $term	413	=item on_refresh_end $term
127		414
128	Called just after the screen gets redrawn. See C<on_refresh_begin>.	415	Called just after the screen gets redrawn. See C<on_refresh_begin>.
129		416
		417	=item on_keyboard_command $term, $string
		418
		419	Called whenever the user presses a key combination that has a
		420	C<perl:string> action bound to it (see description of the B<keysym>
		421	resource in the @@RXVT_NAME@@(1) manpage).
		422
		423	=item on_x_event $term, $event
		424
		425	Called on every X event received on the vt window (and possibly other
		426	windows). Should only be used as a last resort. Most event structure
		427	members are not passed.
		428
		429	=item on_focus_in $term
		430
		431	Called whenever the window gets the keyboard focus, before rxvt-unicode
		432	does focus in processing.
		433
		434	=item on_focus_out $term
		435
		436	Called wheneever the window loses keyboard focus, before rxvt-unicode does
		437	focus out processing.
		438
		439	=item on_configure_notify $term, $event
		440
		441	=item on_key_press $term, $event, $keysym, $octets
		442
		443	=item on_key_release $term, $event, $keysym
		444
		445	=item on_button_press $term, $event
		446
		447	=item on_button_release $term, $event
		448
		449	=item on_motion_notify $term, $event
		450
		451	=item on_map_notify $term, $event
		452
		453	=item on_unmap_notify $term, $event
		454
		455	Called whenever the corresponding X event is received for the terminal If
		456	the hook returns true, then the even will be ignored by rxvt-unicode.
		457
		458	The event is a hash with most values as named by Xlib (see the XEvent
		459	manpage), with the additional members C<row> and C<col>, which are the row
		460	and column under the mouse cursor.
		461
		462	C<on_key_press> additionally receives the string rxvt-unicode would
		463	output, if any, in locale-specific encoding.
		464
		465	subwindow.
		466
		467	=back
		468
		469	=cut
		470
		471	package urxvt;
		472
		473	use utf8;
		474	use strict;
		475	use Carp ();
		476	use Scalar::Util ();
		477	use List::Util ();
		478
		479	our $VERSION = 1;
		480	our $TERM;
		481	our @HOOKNAME;
		482	our %HOOKTYPE = map +($HOOKNAME[$_] => $_), 0..$#HOOKNAME;
		483	our %OPTION;
		484
		485	our $LIBDIR;
		486	our $RESNAME;
		487	our $RESCLASS;
		488	our $RXVTNAME;
		489
		490	=head2 Variables in the C<urxvt> Package
		491
		492	=over 4
		493
		494	=item $urxvt::LIBDIR
		495
		496	The rxvt-unicode library directory, where, among other things, the perl
		497	modules and scripts are stored.
		498
		499	=item $urxvt::RESCLASS, $urxvt::RESCLASS
		500
		501	The resource class and name rxvt-unicode uses to look up X resources.
		502
		503	=item $urxvt::RXVTNAME
		504
		505	The basename of the installed binaries, usually C<urxvt>.
		506
		507	=item $urxvt::TERM
		508
		509	The current terminal. This variable stores the current C<urxvt::term>
		510	object, whenever a callback/hook is executing.
		511
130	=back	512	=back
131		513
132	=head2 Functions in the C<urxvt> Package	514	=head2 Functions in the C<urxvt> Package
133		515
134	=over 4	516	=over 4
…		…
146	that calls this function.	528	that calls this function.
147		529
148	Using this function has the advantage that its output ends up in the	530	Using this function has the advantage that its output ends up in the
149	correct place, e.g. on stderr of the connecting urxvtc client.	531	correct place, e.g. on stderr of the connecting urxvtc client.
150		532
		533	Messages have a size limit of 1023 bytes currently.
		534
151	=item $time = urxvt::NOW	535	=item $time = urxvt::NOW
152		536
153	Returns the "current time" (as per the event loop).	537	Returns the "current time" (as per the event loop).
154		538
		539	=item urxvt::CurrentTime
		540
		541	=item urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,
		542	Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,
		543	Button4Mask, Button5Mask, AnyModifier
		544
		545	=item urxvt::NoEventMask, KeyPressMask, KeyReleaseMask,
		546	ButtonPressMask, ButtonReleaseMask, EnterWindowMask, LeaveWindowMask,
		547	PointerMotionMask, PointerMotionHintMask, Button1MotionMask, Button2MotionMask,
		548	Button3MotionMask, Button4MotionMask, Button5MotionMask, ButtonMotionMask,
		549	KeymapStateMask, ExposureMask, VisibilityChangeMask, StructureNotifyMask,
		550	ResizeRedirectMask, SubstructureNotifyMask, SubstructureRedirectMask,
		551	FocusChangeMask, PropertyChangeMask, ColormapChangeMask, OwnerGrabButtonMask
		552
		553	=item urxvt::KeyPress, KeyRelease, ButtonPress, ButtonRelease, MotionNotify,
		554	EnterNotify, LeaveNotify, FocusIn, FocusOut, KeymapNotify, Expose,
		555	GraphicsExpose, NoExpose, VisibilityNotify, CreateNotify, DestroyNotify,
		556	UnmapNotify, MapNotify, MapRequest, ReparentNotify, ConfigureNotify,
		557	ConfigureRequest, GravityNotify, ResizeRequest, CirculateNotify,
		558	CirculateRequest, PropertyNotify, SelectionClear, SelectionRequest,
		559	SelectionNotify, ColormapNotify, ClientMessage, MappingNotify
		560
		561	Various constants for use in X calls and event processing.
		562
		563	=back
		564
		565	=head2 RENDITION
		566
		567	Rendition bitsets contain information about colour, font, font styles and
		568	similar information for each screen cell.
		569
		570	The following "macros" deal with changes in rendition sets. You should
		571	never just create a bitset, you should always modify an existing one,
		572	as they contain important information required for correct operation of
		573	rxvt-unicode.
		574
		575	=over 4
		576
		577	=item $rend = urxvt::DEFAULT_RSTYLE
		578
		579	Returns the default rendition, as used when the terminal is starting up or
		580	being reset. Useful as a base to start when creating renditions.
		581
		582	=item $rend = urxvt::OVERLAY_RSTYLE
		583
		584	Return the rendition mask used for overlays by default.
		585
		586	=item $rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline
		587
		588	Return the bit that enabled bold, italic, blink, reverse-video and
		589	underline, respectively. To enable such a style, just logically OR it into
		590	the bitset.
		591
		592	=item $foreground = urxvt::GET_BASEFG $rend
		593
		594	=item $background = urxvt::GET_BASEBG $rend
		595
		596	Return the foreground/background colour index, respectively.
		597
		598	=item $rend = urxvt::SET_FGCOLOR $rend, $new_colour
		599
		600	=item $rend = urxvt::SET_BGCOLOR $rend, $new_colour
		601
		602	Replace the foreground/background colour in the rendition mask with the
		603	specified one.
		604
		605	=item $value = urxvt::GET_CUSTOM $rend
		606
		607	Return the "custom" value: Every rendition has 5 bits for use by
		608	extensions. They can be set and changed as you like and are initially
		609	zero.
		610
		611	=item $rend = urxvt::SET_CUSTOM $rend, $new_value
		612
		613	Change the custom value.
		614
		615	=back
		616
155	=cut	617	=cut
156		618
157	package urxvt;
158
159	use strict;
160
161	our $term;
162	our @HOOKNAME;
163	our $LIBDIR;
164
165	BEGIN {	619	BEGIN {
166	urxvt->bootstrap;
167
168	# overwrite perl's warn	620	# overwrite perl's warn
169	*CORE::GLOBAL::warn = sub {	621	*CORE::GLOBAL::warn = sub {
170	my $msg = join "", @_;	622	my $msg = join "", @_;
171	$msg .= "\n"	623	$msg .= "\n"
172	unless $msg =~ /\n$/;	624	unless $msg =~ /\n$/;
173	urxvt::warn ($msg);	625	urxvt::warn ($msg);
174	};	626	};
175	}
176		627
		628	# %ENV is the original startup environment
		629	delete $ENV{IFS};
		630	delete $ENV{CDPATH};
		631	delete $ENV{BASH_ENV};
		632	$ENV{PATH} = "/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:/opt/bin:/opt/sbin";
		633	}
		634
177	my $verbosity = $ENV{URXVT_PERL_VERBOSITY} || 10;	635	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};
178		636
179	sub verbose {	637	sub verbose {
180	my ($level, $msg) = @_;	638	my ($level, $msg) = @_;
181	warn "$msg\n"; #d#	639	warn "$msg\n" if $level <= $verbosity;
182	}	640	}
183		641
184	my @invoke_cb;	642	my %extension_pkg;
		643
		644	# load a single script into its own package, once only
		645	sub extension_package($) {
		646	my ($path) = @_;
		647
		648	no strict 'refs';
		649
		650	$extension_pkg{$path} ||= do {
		651	$path =~ /([^\/\\]+)$/;
		652	my $pkg = $1;
		653	$pkg =~ s/[^[:word:]]/_/g;
		654	$pkg = "urxvt::ext::$pkg";
		655
		656	verbose 3, "loading extension '$path' into package '$pkg'";
		657
		658	open my $fh, "<:raw", $path
		659	or die "$path: $!";
		660
		661	@{"$pkg\::ISA"} = urxvt::term::extension::;
		662
		663	my $source =
		664	"package $pkg; use strict; use utf8;\n"
		665	. "#line 1 \"$path\"\n{\n"
		666	. (do { local $/; <$fh> })
		667	. "\n};\n1";
		668
		669	eval $source
		670	or die "$path: $@";
		671
		672	$pkg
		673	}
		674	}
		675
		676	our $retval; # return value for urxvt
185		677
186	# called by the rxvt core	678	# called by the rxvt core
187	sub invoke {	679	sub invoke {
188	local $term = shift;	680	local $TERM = shift;
189	my $htype = shift;	681	my $htype = shift;
190		682
191	my $cb = $invoke_cb[$htype];	683	if ($htype == 0) { # INIT
		684	my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");
		685
		686	my %ext_arg;
192		687
193	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $term, @_) . ")"	688	for (map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2) {
194	if $verbosity >= 10;	689	if ($_ eq "default") {
		690	$ext_arg{$_} ||= [] for qw(selection option-popup selection-popup searchable-scrollback);
		691	} elsif (/^-(.*)$/) {
		692	delete $ext_arg{$1};
		693	} elsif (/^([^<]+)<(.*)>$/) {
		694	push @{ $ext_arg{$1} }, $2;
		695	} else {
		696	$ext_arg{$_} ||= [];
		697	}
		698	}
195		699
196	while (my ($k, $v) = each %$cb) {	700	while (my ($ext, $argv) = each %ext_arg) {
197	return 1 if $v->($term, @_);	701	my @files = grep -f $_, map "$_/$ext", @dirs;
		702
		703	if (@files) {
		704	$TERM->register_package (extension_package $files[0], $argv);
		705	} else {
		706	warn "perl extension '$ext' not found in perl library search path\n";
		707	}
		708	}
		709
		710	eval "#line 1 \"--perl-eval resource/argument\"\n" . $TERM->resource ("perl_eval");
		711	warn $@ if $@;
198	}	712	}
199		713
		714	$retval = undef;
		715
		716	if (my $cb = $TERM->{_hook}[$htype]) {
		717	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
		718	if $verbosity >= 10;
		719
		720	keys %$cb;
		721
		722	while (my ($pkg, $cb) = each %$cb) {
		723	$retval = eval { $cb->($TERM->{_pkg}{$pkg}, @_) }
		724	and last;
		725
		726	if ($@) {
		727	$TERM->ungrab; # better to lose the grab than the session
		728	warn $@;
		729	}
		730	}
		731
		732	verbose 11, "$HOOKNAME[$htype] returning <$retval>"
		733	if $verbosity >= 11;
200	0	734	}
		735
		736	if ($htype == 1) { # DESTROY
		737	# clear package objects
		738	%$_ = () for values %{ $TERM->{_pkg} };
		739
		740	# clear package
		741	%$TERM = ();
		742	}
		743
		744	$retval
201	}	745	}
		746
		747	sub exec_async(@) {
		748	my $pid = fork;
		749
		750	return
		751	if !defined $pid or $pid;
		752
		753	%ENV = %{ $TERM->env };
		754
		755	exec @_;
		756	_exit 255;
		757	}
		758
		759	# urxvt::term::extension
		760
		761	package urxvt::term::extension;
		762
		763	sub enable {
		764	my ($self, %hook) = @_;
		765	my $pkg = $self->{_pkg};
		766
		767	while (my ($name, $cb) = each %hook) {
		768	my $htype = $HOOKTYPE{uc $name};
		769	defined $htype
		770	or Carp::croak "unsupported hook type '$name'";
		771
		772	$self->set_should_invoke ($htype, +1)
		773	unless exists $self->{term}{_hook}[$htype]{$pkg};
		774
		775	$self->{term}{_hook}[$htype]{$pkg} = $cb;
		776	}
		777	}
		778
		779	sub disable {
		780	my ($self, @hook) = @_;
		781	my $pkg = $self->{_pkg};
		782
		783	for my $name (@hook) {
		784	my $htype = $HOOKTYPE{uc $name};
		785	defined $htype
		786	or Carp::croak "unsupported hook type '$name'";
		787
		788	$self->set_should_invoke ($htype, -1)
		789	if delete $self->{term}{_hook}[$htype]{$pkg};
		790	}
		791	}
		792
		793	our $AUTOLOAD;
		794
		795	sub AUTOLOAD {
		796	$AUTOLOAD =~ /:([^:]+)$/
		797	or die "FATAL: \$AUTOLOAD '$AUTOLOAD' unparsable";
		798
		799	eval qq{
		800	sub $AUTOLOAD {
		801	my \$proxy = shift;
		802	\$proxy->{term}->$1 (\@_)
		803	}
		804	1
		805	} or die "FATAL: unable to compile method forwarder: $@";
		806
		807	goto &$AUTOLOAD;
		808	}
		809
		810	sub DESTROY {
		811	# nop
		812	}
		813
		814	# urxvt::destroy_hook
		815
		816	sub urxvt::destroy_hook::DESTROY {
		817	${$_[0]}->();
		818	}
		819
		820	sub urxvt::destroy_hook(&) {
		821	bless \shift, urxvt::destroy_hook::
		822	}
		823
		824	package urxvt::anyevent;
		825
		826	=head2 The C<urxvt::anyevent> Class
		827
		828	The sole purpose of this class is to deliver an interface to the
		829	C<AnyEvent> module - any module using it will work inside urxvt without
		830	further programming. The only exception is that you cannot wait on
		831	condition variables, but non-blocking condvar use is ok. What this means
		832	is that you cannot use blocking APIs, but the non-blocking variant should
		833	work.
		834
		835	=cut
		836
		837	our $VERSION = 1;
		838
		839	$INC{"urxvt/anyevent.pm"} = 1; # mark us as there
		840	push @AnyEvent::REGISTRY, [urxvt => urxvt::anyevent::];
		841
		842	sub timer {
		843	my ($class, %arg) = @_;
		844
		845	my $cb = $arg{cb};
		846
		847	urxvt::timer
		848	->new
		849	->start (urxvt::NOW + $arg{after})
		850	->cb (sub {
		851	$_[0]->stop; # need to cancel manually
		852	$cb->();
		853	})
		854	}
		855
		856	sub io {
		857	my ($class, %arg) = @_;
		858
		859	my $cb = $arg{cb};
		860
		861	bless [$arg{fh}, urxvt::iow
		862	->new
		863	->fd (fileno $arg{fh})
		864	->events (($arg{poll} =~ /r/ ? 1 : 0)
		865	| ($arg{poll} =~ /w/ ? 2 : 0))
		866	->start
		867	->cb (sub {
		868	$cb->(($_[1] & 1 ? 'r' : '')
		869	. ($_[1] & 2 ? 'w' : ''));
		870	})],
		871	urxvt::anyevent::
		872	}
		873
		874	sub DESTROY {
		875	$_[0][1]->stop;
		876	}
		877
		878	sub condvar {
		879	bless \my $flag, urxvt::anyevent::condvar::
		880	}
		881
		882	sub urxvt::anyevent::condvar::broadcast {
		883	${$_[0]}++;
		884	}
		885
		886	sub urxvt::anyevent::condvar::wait {
		887	unless (${$_[0]}) {
		888	Carp::croak "AnyEvent->condvar blocking wait unsupported in urxvt, use a non-blocking API";
		889	}
		890	}
		891
		892	package urxvt::term;
		893
		894	=head2 The C<urxvt::term> Class
		895
		896	=over 4
		897
		898	=cut
202		899
203	# find on_xxx subs in the package and register them	900	# find on_xxx subs in the package and register them
204	# as hooks	901	# as hooks
205	sub register_package($) {	902	sub register_package {
206	my ($pkg) = @_;	903	my ($self, $pkg, $argv) = @_;
207		904
		905	my $proxy = bless {
		906	_pkg => $pkg,
		907	argv => $argv,
		908	}, $pkg;
		909	Scalar::Util::weaken ($proxy->{term} = $self);
		910
		911	$self->{_pkg}{$pkg} = $proxy;
		912
208	for my $hook (0.. $#HOOKNAME) {	913	for my $name (@HOOKNAME) {
209	my $name = $HOOKNAME[$hook];
210
211	my $ref = $pkg->can ("on_" . lc $name)	914	if (my $ref = $pkg->can ("on_" . lc $name)) {
212	or next;	915	$proxy->enable ($name => $ref);
213		916	}
214	$invoke_cb[$hook]{$ref*1} = $ref;
215	set_should_invoke $hook, 1;
216	}	917	}
217	}	918	}
218		919
219	my $script_pkg = "script0000";	920	=item $term = new urxvt::term $envhashref, $rxvtname, [arg...]
220	my %script_pkg;
221		921
222	# load a single script into its own package, once only	922	Creates a new terminal, very similar as if you had started it with system
223	sub load_script($) {	923	C<$rxvtname, arg...>. C<$envhashref> must be a reference to a C<%ENV>-like
224	my ($path) = @_;	924	hash which defines the environment of the new terminal.
225		925
226	$script_pkg{$path} ||= do {	926	Croaks (and probably outputs an error message) if the new instance
227	my $pkg = $script_pkg++;	927	couldn't be created. Returns C<undef> if the new instance didn't
228	verbose 3, "loading script '$path' into package '$pkg'";	928	initialise perl, and the terminal object otherwise. The C<init> and
		929	C<start> hooks will be called during this call.
229		930
230	open my $fh, "<:raw", $path	931	=cut
231	or die "$path: $!";
232		932
233	eval "package $pkg; use strict; use utf8;\n"	933	sub new {
234	. "#line 1 \"$path\"\n"	934	my ($class, $env, @args) = @_;
235	. do { local $/; <$fh> }
236	or die "$path: $@";
237		935
238	register_package $pkg;	936	_new ([ map "$_=$env->{$_}", keys %$env ], @args);
239
240	$pkg
241	};
242	}	937	}
243		938
244	sub load_scripts($) {	939	=item $term->destroy
245	my ($dir) = @_;
246		940
247	verbose 3, "loading scripts from '$dir'";	941	Destroy the terminal object (close the window, free resources
		942	etc.). Please note that @@RXVT_NAME@@ will not exit as long as any event
		943	watchers (timers, io watchers) are still active.
248		944
249	load_script $_	945	=item $isset = $term->option ($optval[, $set])
250	for grep -f $_,
251	<$dir/perl-ext/*>;
252	}
253		946
254	sub on_init {	947	Returns true if the option specified by C<$optval> is enabled, and
255	my ($term) = @_;	948	optionally change it. All option values are stored by name in the hash
		949	C<%urxvt::OPTION>. Options not enabled in this binary are not in the hash.
256		950
257	my $libdir = $term->resource ("perl_lib");	951	Here is a a likely non-exhaustive list of option names, please see the
		952	source file F</src/optinc.h> to see the actual list:
258		953
259	load_scripts $libdir	954	borderLess console cursorBlink cursorUnderline hold iconic insecure
260	if defined $libdir;	955	intensityStyles jumpScroll loginShell mapAlert meta8 mouseWheelScrollPage
261	}	956	pastableTabs pointerBlank reverseVideo scrollBar scrollBar_floating
262		957	scrollBar_right scrollTtyKeypress scrollTtyOutput scrollWithBuffer
263	register_package __PACKAGE__;	958	secondaryScreen secondaryScroll skipBuiltinGlyphs transparent
264	load_scripts $LIBDIR;	959	tripleclickwords utmpInhibit visualBell
265
266	=back
267
268	=head2 The C<urxvt::term> Class
269
270	=over 4
271		960
272	=item $value = $term->resource ($name[, $newval])	961	=item $value = $term->resource ($name[, $newval])
273		962
274	Returns the current resource value associated with a given name and	963	Returns the current resource value associated with a given name and
275	optionally sets a new value. Setting values is most useful in the C<init>	964	optionally sets a new value. Setting values is most useful in the C<init>
…		…
285		974
286	Please note that resource strings will currently only be freed when the	975	Please note that resource strings will currently only be freed when the
287	terminal is destroyed, so changing options frequently will eat memory.	976	terminal is destroyed, so changing options frequently will eat memory.
288		977
289	Here is a a likely non-exhaustive list of resource names, not all of which	978	Here is a a likely non-exhaustive list of resource names, not all of which
290	are supported in every build, please see the source to see the actual	979	are supported in every build, please see the source file F</src/rsinc.h>
291	list:	980	to see the actual list:
292		981
293	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont	982	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
294	borderLess color cursorBlink cursorUnderline cutchars delete_key	983	borderLess color cursorBlink cursorUnderline cutchars delete_key
295	display_name embed ext_bwidth fade font geometry hold iconName	984	display_name embed ext_bwidth fade font geometry hold iconName
296	imFont imLocale inputMethod insecure int_bwidth intensityStyles	985	imFont imLocale inputMethod insecure int_bwidth intensityStyles
297	italicFont jumpScroll lineSpace loginShell mapAlert menu meta8	986	italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier
298	modifier mouseWheelScrollPage name pastableTabs path perl perl_eval	987	mouseWheelScrollPage name pastableTabs path perl_eval perl_ext_1 perl_ext_2
299	perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd	988	perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd
300	reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating	989	reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating
301	scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput	990	scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput
302	scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle	991	scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle
303	shade term_name title transparent transparent_all tripleclickwords	992	shade term_name title transparent transparent_all tripleclickwords
304	utmpInhibit visualBell	993	utmpInhibit visualBell
305		994
306	=cut	995	=cut
307		996
308	sub urxvt::term::resource($$;$) {	997	sub resource($$;$) {
309	my ($self, $name) = (shift, shift);	998	my ($self, $name) = (shift, shift);
310	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);	999	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);
311	goto &urxvt::term::_resource;	1000	&urxvt::term::_resource
312	}	1001	}
		1002
		1003	=item $value = $term->x_resource ($pattern)
		1004
		1005	Returns the X-Resource for the given pattern, excluding the program or
		1006	class name, i.e. C<< $term->x_resource ("boldFont") >> should return the
		1007	same value as used by this instance of rxvt-unicode. Returns C<undef> if no
		1008	resource with that pattern exists.
		1009
		1010	This method should only be called during the C<on_start> hook, as there is
		1011	only one resource database per display, and later invocations might return
		1012	the wrong resources.
		1013
		1014	=item $success = $term->parse_keysym ($keysym_spec, $command_string)
		1015
		1016	Adds a keymap translation exactly as specified via a resource. See the
		1017	C<keysym> resource in the @@RXVT_NAME@@(1) manpage.
		1018
		1019	=item $rend = $term->rstyle ([$new_rstyle])
		1020
		1021	Return and optionally change the current rendition. Text that is output by
		1022	the terminal application will use this style.
		1023
		1024	=item ($row, $col) = $term->screen_cur ([$row, $col])
		1025
		1026	Return the current coordinates of the text cursor position and optionally
		1027	set it (which is usually bad as applications don't expect that).
313		1028
314	=item ($row, $col) = $term->selection_mark ([$row, $col])	1029	=item ($row, $col) = $term->selection_mark ([$row, $col])
315		1030
316	=item ($row, $col) = $term->selection_beg ([$row, $col])	1031	=item ($row, $col) = $term->selection_beg ([$row, $col])
317		1032
318	=item ($row, $col) = $term->selection_end ([$row, $col])	1033	=item ($row, $col) = $term->selection_end ([$row, $col])
319		1034
320	Return the current values of the selection mark, begin or end positions,	1035	Return the current values of the selection mark, begin or end positions,
321	and optionally set them to new values.	1036	and optionally set them to new values.
322		1037
		1038	=item $term->selection_make ($eventtime[, $rectangular])
		1039
		1040	Tries to make a selection as set by C<selection_beg> and
		1041	C<selection_end>. If C<$rectangular> is true (default: false), a
		1042	rectangular selection will be made. This is the prefered function to make
		1043	a selection.
		1044
323	=item $success = $term->selection_grab ($eventtime)	1045	=item $success = $term->selection_grab ($eventtime)
324		1046
325	Try to request the primary selection from the server (for example, as set	1047	Try to request the primary selection text from the server (for example, as
326	by the next method).	1048	set by the next method). No visual feedback will be given. This function
		1049	is mostly useful from within C<on_sel_grab> hooks.
327		1050
328	=item $oldtext = $term->selection ([$newtext])	1051	=item $oldtext = $term->selection ([$newtext])
329		1052
330	Return the current selection text and optionally replace it by C<$newtext>.	1053	Return the current selection text and optionally replace it by C<$newtext>.
331		1054
332	=item $term->scr_overlay ($x, $y, $text)	1055	=item $term->overlay_simple ($x, $y, $text)
333		1056
334	Create a simple multi-line overlay box. See the next method for details.	1057	Create a simple multi-line overlay box. See the next method for details.
335		1058
336	=cut	1059	=cut
337		1060
338	sub urxvt::term::scr_overlay {	1061	sub overlay_simple {
339	my ($self, $x, $y, $text) = @_;	1062	my ($self, $x, $y, $text) = @_;
340		1063
341	my @lines = split /\n/, $text;	1064	my @lines = split /\n/, $text;
342		1065
343	my $w = 0;	1066	my $w = List::Util::max map $self->strwidth ($_), @lines;
344	for (map $self->strwidth ($_), @lines) {
345	$w = $_ if $w < $_;
346	}
347		1067
348	$self->scr_overlay_new ($x, $y, $w, scalar @lines);	1068	my $overlay = $self->overlay ($x, $y, $w, scalar @lines);
349	$self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;	1069	$overlay->set (0, $_, $lines[$_]) for 0.. $#lines;
350	}
351		1070
		1071	$overlay
		1072	}
		1073
352	=item $term->scr_overlay_new ($x, $y, $width, $height)	1074	=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
353		1075
354	Create a new (empty) overlay at the given position with the given	1076	Create a new (empty) overlay at the given position with the given
355	width/height. A border will be put around the box. If either C<$x> or	1077	width/height. C<$rstyle> defines the initial rendition style
356	C<$y> is negative, then this is counted from the right/bottom side,	1078	(default: C<OVERLAY_RSTYLE>).
357	respectively.
358		1079
359	=item $term->scr_overlay_off	1080	If C<$border> is C<2> (default), then a decorative border will be put
		1081	around the box.
360		1082
361	Switch the overlay off again.	1083	If either C<$x> or C<$y> is negative, then this is counted from the
		1084	right/bottom side, respectively.
362		1085
363	=item $term->scr_overlay_set_char ($x, $y, $char, $rend = OVERLAY_RSTYLE)	1086	This method returns an urxvt::overlay object. The overlay will be visible
		1087	as long as the perl object is referenced.
364		1088
365	Put a single character (specified numerically) at the given overlay	1089	The methods currently supported on C<urxvt::overlay> objects are:
366	position.
367		1090
		1091	=over 4
		1092
368	=item $term->scr_overlay_set ($x, $y, $text)	1093	=item $overlay->set ($x, $y, $text, $rend)
369		1094
370	Write a string at the given position into the overlay.	1095	Similar to C<< $term->ROW_t >> and C<< $term->ROW_r >> in that it puts
		1096	text in rxvt-unicode's special encoding and an array of rendition values
		1097	at a specific position inside the overlay.
371		1098
		1099	=item $overlay->hide
		1100
		1101	If visible, hide the overlay, but do not destroy it.
		1102
		1103	=item $overlay->show
		1104
		1105	If hidden, display the overlay again.
		1106
		1107	=back
		1108
		1109	=item $popup = $term->popup ($event)
		1110
		1111	Creates a new C<urxvt::popup> object that implements a popup menu. The
		1112	C<$event> I<must> be the event causing the menu to pop up (a button event,
		1113	currently).
		1114
		1115	=cut
		1116
		1117	sub popup {
		1118	my ($self, $event) = @_;
		1119
		1120	$self->grab ($event->{time}, 1)
		1121	or return;
		1122
		1123	my $popup = bless {
		1124	term => $self,
		1125	event => $event,
		1126	}, urxvt::popup::;
		1127
		1128	Scalar::Util::weaken $popup->{term};
		1129
		1130	$self->{_destroy}{$popup} = urxvt::destroy_hook { $popup->{popup}->destroy };
		1131	Scalar::Util::weaken $self->{_destroy}{$popup};
		1132
		1133	$popup
		1134	}
		1135
372	=item $cellwidth = $term->strwidth $string	1136	=item $cellwidth = $term->strwidth ($string)
373		1137
374	Returns the number of screen-cells this string would need. Correctly	1138	Returns the number of screen-cells this string would need. Correctly
375	accounts for wide and combining characters.	1139	accounts for wide and combining characters.
376		1140
377	=item $octets = $term->locale_encode $string	1141	=item $octets = $term->locale_encode ($string)
378		1142
379	Convert the given text string into the corresponding locale encoding.	1143	Convert the given text string into the corresponding locale encoding.
380		1144
381	=item $string = $term->locale_decode $octets	1145	=item $string = $term->locale_decode ($octets)
382		1146
383	Convert the given locale-encoded octets into a perl string.	1147	Convert the given locale-encoded octets into a perl string.
384		1148
		1149	=item $term->scr_xor_span ($beg_row, $beg_col, $end_row, $end_col[, $rstyle])
		1150
		1151	XORs the rendition values in the given span with the provided value
		1152	(default: C<RS_RVid>), which I<MUST NOT> contain font styles. Useful in
		1153	refresh hooks to provide effects similar to the selection.
		1154
		1155	=item $term->scr_xor_rect ($beg_row, $beg_col, $end_row, $end_col[, $rstyle1[, $rstyle2]])
		1156
		1157	Similar to C<scr_xor_span>, but xors a rectangle instead. Trailing
		1158	whitespace will additionally be xored with the C<$rstyle2>, which defaults
		1159	to C<RS_RVid | RS_Uline>, which removes reverse video again and underlines
		1160	it instead. Both styles I<MUST NOT> contain font styles.
		1161
		1162	=item $term->scr_bell
		1163
		1164	Ring the bell!
		1165
		1166	=item $term->scr_add_lines ($string)
		1167
		1168	Write the given text string to the screen, as if output by the application
		1169	running inside the terminal. It may not contain command sequences (escape
		1170	codes), but is free to use line feeds, carriage returns and tabs. The
		1171	string is a normal text string, not in locale-dependent encoding.
		1172
		1173	Normally its not a good idea to use this function, as programs might be
		1174	confused by changes in cursor position or scrolling. Its useful inside a
		1175	C<on_add_lines> hook, though.
		1176
		1177	=item $term->cmd_parse ($octets)
		1178
		1179	Similar to C<scr_add_lines>, but the argument must be in the
		1180	locale-specific encoding of the terminal and can contain command sequences
		1181	(escape codes) that will be interpreted.
		1182
385	=item $term->tt_write ($octets)	1183	=item $term->tt_write ($octets)
386		1184
387	Write the octets given in C<$data> to the tty (i.e. as program input). To	1185	Write the octets given in C<$data> to the tty (i.e. as program input). To
388	pass characters instead of octets, you should convetr you strings first to	1186	pass characters instead of octets, you should convert your strings first
389	the locale-specific encoding using C<< $term->locale_encode >>.	1187	to the locale-specific encoding using C<< $term->locale_encode >>.
		1188
		1189	=item $old_events = $term->pty_ev_events ([$new_events])
		1190
		1191	Replaces the event mask of the pty watcher by the given event mask. Can
		1192	be used to suppress input and output handling to the pty/tty. See the
		1193	description of C<< urxvt::timer->events >>. Make sure to always restore
		1194	the previous value.
		1195
		1196	=item $windowid = $term->parent
		1197
		1198	Return the window id of the toplevel window.
		1199
		1200	=item $windowid = $term->vt
		1201
		1202	Return the window id of the terminal window.
		1203
		1204	=item $term->vt_emask_add ($x_event_mask)
		1205
		1206	Adds the specified events to the vt event mask. Useful e.g. when you want
		1207	to receive pointer events all the times:
		1208
		1209	$term->vt_emask_add (urxvt::PointerMotionMask);
		1210
		1211	=item $window_width = $term->width
		1212
		1213	=item $window_height = $term->height
		1214
		1215	=item $font_width = $term->fwidth
		1216
		1217	=item $font_height = $term->fheight
		1218
		1219	=item $font_ascent = $term->fbase
		1220
		1221	=item $terminal_rows = $term->nrow
		1222
		1223	=item $terminal_columns = $term->ncol
		1224
		1225	=item $has_focus = $term->focus
		1226
		1227	=item $is_mapped = $term->mapped
		1228
		1229	=item $max_scrollback = $term->saveLines
		1230
		1231	=item $nrow_plus_saveLines = $term->total_rows
		1232
		1233	=item $topmost_scrollback_row = $term->top_row
		1234
		1235	Return various integers describing terminal characteristics.
		1236
		1237	=item $x_display = $term->display_id
		1238
		1239	Return the DISPLAY used by rxvt-unicode.
		1240
		1241	=item $lc_ctype = $term->locale
		1242
		1243	Returns the LC_CTYPE category string used by this rxvt-unicode.
		1244
		1245	=item $env = $term->env
		1246
		1247	Returns a copy of the environment in effect for the terminal as a hashref
		1248	similar to C<\%ENV>.
		1249
		1250	=cut
		1251
		1252	sub env {
		1253	if (my $env = $_[0]->_env) {
		1254	+{ map /^([^=]+)(?:=(.*))?$/s && ($1 => $2), @$env }
		1255	} else {
		1256	+{ %ENV }
		1257	}
		1258	}
		1259
		1260	=item $modifiermask = $term->ModLevel3Mask
		1261
		1262	=item $modifiermask = $term->ModMetaMask
		1263
		1264	=item $modifiermask = $term->ModNumLockMask
		1265
		1266	Return the modifier masks corresponding to the "ISO Level 3 Shift" (often
		1267	AltGr), the meta key (often Alt) and the num lock key, if applicable.
		1268
		1269	=item $view_start = $term->view_start ([$newvalue])
		1270
		1271	Returns the row number of the topmost displayed line. Maximum value is
		1272	C<0>, which displays the normal terminal contents. Lower values scroll
		1273	this many lines into the scrollback buffer.
		1274
		1275	=item $term->want_refresh
		1276
		1277	Requests a screen refresh. At the next opportunity, rxvt-unicode will
		1278	compare the on-screen display with its stored representation. If they
		1279	differ, it redraws the differences.
		1280
		1281	Used after changing terminal contents to display them.
		1282
		1283	=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])
		1284
		1285	Returns the text of the entire row with number C<$row_number>. Row C<0>
		1286	is the topmost terminal line, row C<< $term->$ncol-1 >> is the bottommost
		1287	terminal line. The scrollback buffer starts at line C<-1> and extends to
		1288	line C<< -$term->nsaved >>. Nothing will be returned if a nonexistent line
		1289	is requested.
		1290
		1291	If C<$new_text> is specified, it will replace characters in the current
		1292	line, starting at column C<$start_col> (default C<0>), which is useful
		1293	to replace only parts of a line. The font index in the rendition will
		1294	automatically be updated.
		1295
		1296	C<$text> is in a special encoding: tabs and wide characters that use more
		1297	than one cell when displayed are padded with urxvt::NOCHAR characters
		1298	(C<chr 65535>). Characters with combining characters and other characters
		1299	that do not fit into the normal tetx encoding will be replaced with
		1300	characters in the private use area.
		1301
		1302	You have to obey this encoding when changing text. The advantage is
		1303	that C<substr> and similar functions work on screen cells and not on
		1304	characters.
		1305
		1306	The methods C<< $term->special_encode >> and C<< $term->special_decode >>
		1307	can be used to convert normal strings into this encoding and vice versa.
		1308
		1309	=item $rend = $term->ROW_r ($row_number[, $new_rend[, $start_col]])
		1310
		1311	Like C<< $term->ROW_t >>, but returns an arrayref with rendition
		1312	bitsets. Rendition bitsets contain information about colour, font, font
		1313	styles and similar information. See also C<< $term->ROW_t >>.
		1314
		1315	When setting rendition, the font mask will be ignored.
		1316
		1317	See the section on RENDITION, above.
		1318
		1319	=item $length = $term->ROW_l ($row_number[, $new_length])
		1320
		1321	Returns the number of screen cells that are in use ("the line
		1322	length"). Unlike the urxvt core, this returns C<< $term->ncol >> if the
		1323	line is joined with the following one.
		1324
		1325	=item $bool = $term->is_longer ($row_number)
		1326
		1327	Returns true if the row is part of a multiple-row logical "line" (i.e.
		1328	joined with the following row), which means all characters are in use
		1329	and it is continued on the next row (and possibly a continuation of the
		1330	previous row(s)).
		1331
		1332	=item $line = $term->line ($row_number)
		1333
		1334	Create and return a new C<urxvt::line> object that stores information
		1335	about the logical line that row C<$row_number> is part of. It supports the
		1336	following methods:
		1337
		1338	=over 4
		1339
		1340	=item $text = $line->t ([$new_text])
		1341
		1342	Returns or replaces the full text of the line, similar to C<ROW_t>
		1343
		1344	=item $rend = $line->r ([$new_rend])
		1345
		1346	Returns or replaces the full rendition array of the line, similar to C<ROW_r>
		1347
		1348	=item $length = $line->l
		1349
		1350	Returns the length of the line in cells, similar to C<ROW_l>.
		1351
		1352	=item $rownum = $line->beg
		1353
		1354	=item $rownum = $line->end
		1355
		1356	Return the row number of the first/last row of the line, respectively.
		1357
		1358	=item $offset = $line->offset_of ($row, $col)
		1359
		1360	Returns the character offset of the given row|col pair within the logical
		1361	line. Works for rows outside the line, too, and returns corresponding
		1362	offsets outside the string.
		1363
		1364	=item ($row, $col) = $line->coord_of ($offset)
		1365
		1366	Translates a string offset into terminal coordinates again.
		1367
		1368	=back
		1369
		1370	=cut
		1371
		1372	sub line {
		1373	my ($self, $row) = @_;
		1374
		1375	my $maxrow = $self->nrow - 1;
		1376
		1377	my ($beg, $end) = ($row, $row);
		1378
		1379	--$beg while $self->ROW_is_longer ($beg - 1);
		1380	++$end while $self->ROW_is_longer ($end) && $end < $maxrow;
		1381
		1382	bless {
		1383	term => $self,
		1384	beg => $beg,
		1385	end => $end,
		1386	ncol => $self->ncol,
		1387	len => ($end - $beg) * $self->ncol + $self->ROW_l ($end),
		1388	}, urxvt::line::
		1389	}
		1390
		1391	sub urxvt::line::t {
		1392	my ($self) = @_;
		1393
		1394	if (@_ > 1)
		1395	{
		1396	$self->{term}->ROW_t ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		1397	for $self->{beg} .. $self->{end};
		1398	}
		1399
		1400	defined wantarray &&
		1401	substr +(join "", map $self->{term}->ROW_t ($_), $self->{beg} .. $self->{end}),
		1402	0, $self->{len}
		1403	}
		1404
		1405	sub urxvt::line::r {
		1406	my ($self) = @_;
		1407
		1408	if (@_ > 1)
		1409	{
		1410	$self->{term}->ROW_r ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		1411	for $self->{beg} .. $self->{end};
		1412	}
		1413
		1414	if (defined wantarray) {
		1415	my $rend = [
		1416	map @{ $self->{term}->ROW_r ($_) }, $self->{beg} .. $self->{end}
		1417	];
		1418	$#$rend = $self->{len} - 1;
		1419	return $rend;
		1420	}
		1421
		1422	()
		1423	}
		1424
		1425	sub urxvt::line::beg { $_[0]{beg} }
		1426	sub urxvt::line::end { $_[0]{end} }
		1427	sub urxvt::line::l { $_[0]{len} }
		1428
		1429	sub urxvt::line::offset_of {
		1430	my ($self, $row, $col) = @_;
		1431
		1432	($row - $self->{beg}) * $self->{ncol} + $col
		1433	}
		1434
		1435	sub urxvt::line::coord_of {
		1436	my ($self, $offset) = @_;
		1437
		1438	use integer;
		1439
		1440	(
		1441	$offset / $self->{ncol} + $self->{beg},
		1442	$offset % $self->{ncol}
		1443	)
		1444	}
		1445
		1446	=item $text = $term->special_encode $string
		1447
		1448	Converts a perl string into the special encoding used by rxvt-unicode,
		1449	where one character corresponds to one screen cell. See
		1450	C<< $term->ROW_t >> for details.
		1451
		1452	=item $string = $term->special_decode $text
		1453
		1454	Converts rxvt-unicodes text reprsentation into a perl string. See
		1455	C<< $term->ROW_t >> for details.
		1456
		1457	=item $success = $term->grab_button ($button, $modifiermask)
		1458
		1459	Registers a synchronous button grab. See the XGrabButton manpage.
		1460
		1461	=item $success = $term->grab ($eventtime[, $sync])
		1462
		1463	Calls XGrabPointer and XGrabKeyboard in asynchronous (default) or
		1464	synchronous (C<$sync> is true). Also remembers the grab timestampe.
		1465
		1466	=item $term->allow_events_async
		1467
		1468	Calls XAllowEvents with AsyncBoth for the most recent grab.
		1469
		1470	=item $term->allow_events_sync
		1471
		1472	Calls XAllowEvents with SyncBoth for the most recent grab.
		1473
		1474	=item $term->allow_events_replay
		1475
		1476	Calls XAllowEvents with both ReplayPointer and ReplayKeyboard for the most
		1477	recent grab.
		1478
		1479	=item $term->ungrab
		1480
		1481	Calls XUngrab for the most recent grab. Is called automatically on
		1482	evaluation errors, as it is better to lose the grab in the error case as
		1483	the session.
		1484
		1485	=back
		1486
		1487	=cut
		1488
		1489	package urxvt::popup;
		1490
		1491	=head2 The C<urxvt::popup> Class
		1492
		1493	=over 4
		1494
		1495	=cut
		1496
		1497	sub add_item {
		1498	my ($self, $item) = @_;
		1499
		1500	$item->{rend}{normal} = "\x1b[0;30;47m" unless exists $item->{rend}{normal};
		1501	$item->{rend}{hover} = "\x1b[0;30;46m" unless exists $item->{rend}{hover};
		1502	$item->{rend}{active} = "\x1b[m" unless exists $item->{rend}{active};
		1503
		1504	$item->{render} ||= sub { $_[0]{text} };
		1505
		1506	push @{ $self->{item} }, $item;
		1507	}
		1508
		1509	=item $popup->add_title ($title)
		1510
		1511	Adds a non-clickable title to the popup.
		1512
		1513	=cut
		1514
		1515	sub add_title {
		1516	my ($self, $title) = @_;
		1517
		1518	$self->add_item ({
		1519	rend => { normal => "\x1b[38;5;11;44m", hover => "\x1b[38;5;11;44m", active => "\x1b[38;5;11;44m" },
		1520	text => $title,
		1521	activate => sub { },
		1522	});
		1523	}
		1524
		1525	=item $popup->add_separator ([$sepchr])
		1526
		1527	Creates a separator, optionally using the character given as C<$sepchr>.
		1528
		1529	=cut
		1530
		1531	sub add_separator {
		1532	my ($self, $sep) = @_;
		1533
		1534	$sep ||= "=";
		1535
		1536	$self->add_item ({
		1537	rend => { normal => "\x1b[0;30;47m", hover => "\x1b[0;30;47m", active => "\x1b[0;30;47m" },
		1538	text => "",
		1539	render => sub { $sep x $self->{term}->ncol },
		1540	activate => sub { },
		1541	});
		1542	}
		1543
		1544	=item $popup->add_button ($text, $cb)
		1545
		1546	Adds a clickable button to the popup. C<$cb> is called whenever it is
		1547	selected.
		1548
		1549	=cut
		1550
		1551	sub add_button {
		1552	my ($self, $text, $cb) = @_;
		1553
		1554	$self->add_item ({ type => "button", text => $text, activate => $cb});
		1555	}
		1556
		1557	=item $popup->add_toggle ($text, $cb, $initial_value)
		1558
		1559	Adds a toggle/checkbox item to the popup. Teh callback gets called
		1560	whenever it gets toggled, with a boolean indicating its value as its first
		1561	argument.
		1562
		1563	=cut
		1564
		1565	sub add_toggle {
		1566	my ($self, $text, $cb, $value) = @_;
		1567
		1568	my $item; $item = {
		1569	type => "button",
		1570	text => " $text",
		1571	value => $value,
		1572	render => sub { ($_[0]{value} ? "* " : " ") . $text },
		1573	activate => sub { $cb->($_[1]{value} = !$_[1]{value}); },
		1574	};
		1575
		1576	$self->add_item ($item);
		1577	}
		1578
		1579	=item $popup->show
		1580
		1581	Displays the popup (which is initially hidden).
		1582
		1583	=cut
		1584
		1585	sub show {
		1586	my ($self) = @_;
		1587
		1588	local $urxvt::popup::self = $self;
		1589
		1590	my $env = $self->{term}->env;
		1591	# we can't hope to reproduce the locale algorithm, so nuke LC_ALL and set LC_CTYPE.
		1592	delete $env->{LC_ALL};
		1593	$env->{LC_CTYPE} = $self->{term}->locale;
		1594
		1595	urxvt::term->new ($env, "popup",
		1596	"--perl-lib" => "", "--perl-ext-common" => "", "-pty-fd" => -1, "-sl" => 0, "-b" => 0,
		1597	"--transient-for" => $self->{term}->parent,
		1598	"-display" => $self->{term}->display_id,
		1599	"-pe" => "urxvt-popup")
		1600	or die "unable to create popup window\n";
		1601	}
		1602
		1603	sub DESTROY {
		1604	my ($self) = @_;
		1605
		1606	delete $self->{term}{_destroy}{$self};
		1607	$self->{term}->ungrab;
		1608	}
390		1609
391	=back	1610	=back
392		1611
393	=head2 The C<urxvt::timer> Class	1612	=head2 The C<urxvt::timer> Class
394		1613
395	This class implements timer watchers/events. Time is represented as a	1614	This class implements timer watchers/events. Time is represented as a
396	fractional number of seconds since the epoch. Example:	1615	fractional number of seconds since the epoch. Example:
397		1616
398	# create a digital clock display in upper right corner	1617	$term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
399	$term->{timer} = urxvt::timer	1618	$term->{timer} = urxvt::timer
400	->new	1619	->new
401	->start (urxvt::NOW)	1620	->interval (1)
402	->cb (sub {	1621	->cb (sub {
403	my ($timer) = @_;
404	my $time = $timer->at;
405	$timer->start ($time + 1);
406	$self->scr_overlay (-1, 0,	1622	$term->{overlay}->set (0, 0,
407	POSIX::strftime "%H:%M:%S", localtime $time);	1623	sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
408	});	1624	});
409		1625
410	=over 4	1626	=over 4
411		1627
412	=item $timer = new urxvt::timer	1628	=item $timer = new urxvt::timer
413		1629
414	Create a new timer object in stopped state.	1630	Create a new timer object in started state. It is scheduled to fire
		1631	immediately.
415		1632
416	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })	1633	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })
417		1634
418	Set the callback to be called when the timer triggers.	1635	Set the callback to be called when the timer triggers.
419		1636
…		…
423		1640
424	=item $timer = $timer->set ($tstamp)	1641	=item $timer = $timer->set ($tstamp)
425		1642
426	Set the time the event is generated to $tstamp.	1643	Set the time the event is generated to $tstamp.
427		1644
		1645	=item $timer = $timer->interval ($interval)
		1646
		1647	Normally (and when C<$interval> is C<0>), the timer will automatically
		1648	stop after it has fired once. If C<$interval> is non-zero, then the timer
		1649	is automatically rescheduled at the given intervals.
		1650
428	=item $timer = $timer->start	1651	=item $timer = $timer->start
429		1652
430	Start the timer.	1653	Start the timer.
431		1654
432	=item $timer = $timer->start ($tstamp)	1655	=item $timer = $timer->start ($tstamp)
433		1656
434	Set the event trigger time to C<$tstamp> and start the timer.	1657	Set the event trigger time to C<$tstamp> and start the timer.
		1658
		1659	=item $timer = $timer->after ($delay)
		1660
		1661	Like C<start>, but sets the expiry timer to c<urxvt::NOW + $delay>.
435		1662
436	=item $timer = $timer->stop	1663	=item $timer = $timer->stop
437		1664
438	Stop the timer.	1665	Stop the timer.
439		1666
…		…
445		1672
446	$term->{socket} = ...	1673	$term->{socket} = ...
447	$term->{iow} = urxvt::iow	1674	$term->{iow} = urxvt::iow
448	->new	1675	->new
449	->fd (fileno $term->{socket})	1676	->fd (fileno $term->{socket})
450	->events (1) # wait for read data	1677	->events (urxvt::EVENT_READ)
451	->start	1678	->start
452	->cb (sub {	1679	->cb (sub {
453	my ($iow, $revents) = @_;	1680	my ($iow, $revents) = @_;
454	# $revents must be 1 here, no need to check	1681	# $revents must be 1 here, no need to check
455	sysread $term->{socket}, my $buf, 8192	1682	sysread $term->{socket}, my $buf, 8192
…		…
472		1699
473	Set the filedescriptor (not handle) to watch.	1700	Set the filedescriptor (not handle) to watch.
474		1701
475	=item $iow = $iow->events ($eventmask)	1702	=item $iow = $iow->events ($eventmask)
476		1703
477	Set the event mask to watch. Bit #0 (value C<1>) enables watching for read	1704	Set the event mask to watch. The only allowed values are
478	data, Bit #1 (value C<2>) enables watching for write data.	1705	C<urxvt::EVENT_READ> and C<urxvt::EVENT_WRITE>, which might be ORed
		1706	together, or C<urxvt::EVENT_NONE>.
479		1707
480	=item $iow = $iow->start	1708	=item $iow = $iow->start
481		1709
482	Start watching for requested events on the given handle.	1710	Start watching for requested events on the given handle.
483		1711
…		…
494	This variable controls the verbosity level of the perl extension. Higher	1722	This variable controls the verbosity level of the perl extension. Higher
495	numbers indicate more verbose output.	1723	numbers indicate more verbose output.
496		1724
497	=over 4	1725	=over 4
498		1726
499	=item 0 - only fatal messages	1727	=item == 0 - fatal messages
500		1728
501	=item 3 - script loading and management	1729	=item >= 3 - script loading and management
502		1730
503	=item 10 - all events received	1731	=item >=10 - all called hooks
		1732
		1733	=item >=11 - hook reutrn values
504		1734
505	=back	1735	=back
506		1736
507	=head1 AUTHOR	1737	=head1 AUTHOR
508		1738

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