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Revision 1.28 by root, Wed Jan 4 00:09:12 2006 UTC vs.
Revision 1.254 by sf-exg, Tue Mar 17 09:23:08 2015 UTC

1	=encoding utf8	1	=encoding utf8
2		2
3	=head1 NAME	3	=head1 NAME
4		4
5	@@RXVT_NAME@@perl - rxvt-unicode's embedded perl interpreter	5	urxvtperl - rxvt-unicode's embedded perl interpreter
6		6
7	=head1 SYNOPSIS	7	=head1 SYNOPSIS
8		8
9	# create a file grab_test in $HOME:	9	# create a file grab_test in $HOME:
10		10
11	sub on_sel_grab {	11	sub on_sel_grab {
12	warn "you selected ", $_[0]->selection;	12	warn "you selected ", $_[0]->selection;
13	()	13	()
14	}	14	}
15		15
16	# start a @@RXVT_NAME@@ using it:	16	# start a urxvt using it:
17		17
18	@@RXVT_NAME@@ --perl-lib $HOME -pe grab_test	18	urxvt --perl-lib $HOME -pe grab_test
19		19
20	=head1 DESCRIPTION	20	=head1 DESCRIPTION
21		21
22	Everytime a terminal object gets created, scripts specified via the	22	Every time a terminal object gets created, extension scripts specified via
23	C<perl> resource are loaded and associated with it.	23	the C<perl> resource are loaded and associated with it.
24		24
25	Scripts are compiled in a 'use strict' and 'use utf8' environment, and	25	Scripts are compiled in a 'use strict "vars"' and 'use utf8' environment, and
26	thus must be encoded as UTF-8.	26	thus must be encoded as UTF-8.
27		27
28	Each script will only ever be loaded once, even in @@RXVT_NAME@@d, where	28	Each script will only ever be loaded once, even in urxvtd, where
29	scripts will be shared (but not enabled) for all terminals.	29	scripts will be shared (but not enabled) for all terminals.
30		30
31	=head2 Prepackaged Extensions	31	You can disable the embedded perl interpreter by setting both "perl-ext"
		32	and "perl-ext-common" resources to the empty string.
32		33
33	This section describes the extensiosn delivered with this version. You can	34	=head1 PREPACKAGED EXTENSIONS
34	find them in F<@@RXVT_LIBDIR@@/urxvt/perl/>.	35
		36	A number of extensions are delivered with this release. You can find them
		37	in F<< <libdir>/urxvt/perl/ >>, and the documentation can be viewed using
		38	F<< man urxvt-<EXTENSIONNAME> >>.
35		39
36	You can activate them like this:	40	You can activate them like this:
37		41
38	@@RXVT_NAME@@ -pe <extensionname>	42	urxvt -pe <extensionname>
39		43
40	=over 4	44	Or by adding them to the resource for extensions loaded by default:
41		45
42	=item selection	46	URxvt.perl-ext-common: default,selection-autotransform
43		47
44	Intelligent selection. This extension tries to be more intelligent when	48	Extensions may add additional resources and C<actions>, i.e., methods
45	the user extends selections (double-click). Right now, it tries to select	49	which can be bound to a key and invoked by the user. An extension can
46	urls and complete shell-quoted arguments, which is very convenient, too,	50	define the resources it support using so called META comments,
47	if your F<ls> supports C<--quoting-style=shell>.	51	described below. Similarly to builtin resources, extension resources
		52	can also be specified on the command line as long options (with C<.>
		53	replaced by C<->), in which case the corresponding extension is loaded
		54	automatically. For this to work the extension B<must> define META
		55	comments for its resources.
48		56
49	It also offers the following bindable event:	57	=head1 API DOCUMENTATION
50
51	=over 4
52
53	=item rot13
54
55	Rot-13 the selection when activated. Used via keyboard trigger:
56
57	URxvt.keysym.C-M-r: perl:selection:rot13
58
59	=back
60
61	=item digital-clock
62
63	Displays a digital clock using the built-in overlay.
64
65	=item example-refresh-hooks
66
67	Displays a very simple digital clock in the upper right corner of the
68	window. Illustrates overwriting the refresh callbacks to create your own
69	overlays or changes.
70
71	=back
72		58
73	=head2 General API Considerations	59	=head2 General API Considerations
74		60
75	All objects (such as terminals, time watchers etc.) are typical	61	All objects (such as terminals, time watchers etc.) are typical
76	reference-to-hash objects. The hash can be used to store anything you	62	reference-to-hash objects. The hash can be used to store anything you
…		…
81	When objects are destroyed on the C++ side, the perl object hashes are	67	When objects are destroyed on the C++ side, the perl object hashes are
82	emptied, so its best to store related objects such as time watchers and	68	emptied, so its best to store related objects such as time watchers and
83	the like inside the terminal object so they get destroyed as soon as the	69	the like inside the terminal object so they get destroyed as soon as the
84	terminal is destroyed.	70	terminal is destroyed.
85		71
		72	Argument names also often indicate the type of a parameter. Here are some
		73	hints on what they mean:
		74
		75	=over 4
		76
		77	=item $text
		78
		79	Rxvt-unicode's special way of encoding text, where one "unicode" character
		80	always represents one screen cell. See L<ROW_t> for a discussion of this format.
		81
		82	=item $string
		83
		84	A perl text string, with an emphasis on I<text>. It can store all unicode
		85	characters and is to be distinguished with text encoded in a specific
		86	encoding (often locale-specific) and binary data.
		87
		88	=item $octets
		89
		90	Either binary data or - more common - a text string encoded in a
		91	locale-specific way.
		92
		93	=item $keysym
		94
		95	an integer that is a valid X11 keysym code. You can convert a string
		96	into a keysym and viceversa by using C<XStringToKeysym> and
		97	C<XKeysymToString>.
		98
		99	=back
		100
		101	=head2 Extension Objects
		102
		103	Every perl extension is a perl class. A separate perl object is created
		104	for each terminal, and each terminal has its own set of extension objects,
		105	which are passed as the first parameter to hooks. So extensions can use
		106	their C<$self> object without having to think about clashes with other
		107	extensions or other terminals, with the exception of methods and members
		108	that begin with an underscore character C<_>: these are reserved for
		109	internal use.
		110
		111	Although it isn't a C<urxvt::term> object, you can call all methods of the
		112	C<urxvt::term> class on this object.
		113
		114	Additional methods only supported for extension objects are described in
		115	the C<urxvt::extension> section below.
		116
		117	=head2 META comments
		118
		119	Rxvt-unicode recognizes special meta comments in extensions that define
		120	different types of metadata.
		121
		122	Currently, it recognises only one such comment:
		123
		124	=over 4
		125
		126	=item #:META:RESOURCE:name:type:desc
		127
		128	The RESOURCE comment defines a resource used by the extension, where
		129	C<name> is the resource name, C<type> is the resource type, C<boolean>
		130	or C<string>, and C<desc> is the resource description.
		131
		132	=back
		133
86	=head2 Hooks	134	=head2 Hooks
87		135
88	The following subroutines can be declared in loaded scripts, and will be	136	The following subroutines can be declared in extension files, and will be
89	called whenever the relevant event happens.	137	called whenever the relevant event happens.
90		138
91	The first argument passed to them is an object private to each terminal	139	The first argument passed to them is an extension object as described in
92	and extension package. You can call all C<urxvt::term> methods on it, but	140	the in the C<Extension Objects> section.
93	its not a real C<urxvt::term> object. Instead, the real C<urxvt::term>
94	object that is shared between all packages is stored in the C<term>
95	member.
96		141
97	All of them must return a boolean value. If it is true, then the event	142	B<All> of these hooks must return a boolean value. If any of the called
98	counts as being I<consumed>, and the invocation of other hooks is skipped,	143	hooks returns true, then the event counts as being I<consumed>, and the
99	and the relevant action might not be carried out by the C++ code.	144	relevant action might not be carried out by the C++ code.
100		145
101	When in doubt, return a false value (preferably C<()>).	146	I<< When in doubt, return a false value (preferably C<()>). >>
102		147
103	=over 4	148	=over 4
104		149
105	=item on_init $term	150	=item on_init $term
106		151
107	Called after a new terminal object has been initialized, but before	152	Called after a new terminal object has been initialized, but before
108	windows are created or the command gets run.	153	windows are created or the command gets run. Most methods are unsafe to
		154	call or deliver senseless data, as terminal size and other characteristics
		155	have not yet been determined. You can safely query and change resources
		156	and options, though. For many purposes the C<on_start> hook is a better
		157	place.
		158
		159	=item on_start $term
		160
		161	Called at the very end of initialisation of a new terminal, just before
		162	trying to map (display) the toplevel and returning to the main loop.
		163
		164	=item on_destroy $term
		165
		166	Called whenever something tries to destroy terminal, when the terminal is
		167	still fully functional (not for long, though).
109		168
110	=item on_reset $term	169	=item on_reset $term
111		170
112	Called after the screen is "reset" for any reason, such as resizing or	171	Called after the screen is "reset" for any reason, such as resizing or
113	control sequences. Here is where you can react on changes to size-related	172	control sequences. Here is where you can react on changes to size-related
114	variables.	173	variables.
115		174
116	=item on_start $term	175	=item on_child_start $term, $pid
117		176
118	Called at the very end of initialisation of a new terminal, just before	177	Called just after the child process has been C<fork>ed.
119	returning to the mainloop.	178
		179	=item on_child_exit $term, $status
		180
		181	Called just after the child process has exited. C<$status> is the status
		182	from C<waitpid>.
120		183
121	=item on_sel_make $term, $eventtime	184	=item on_sel_make $term, $eventtime
122		185
123	Called whenever a selection has been made by the user, but before the	186	Called whenever a selection has been made by the user, but before the
124	selection text is copied, so changes to the beginning, end or type of the	187	selection text is copied, so changes to the beginning, end or type of the
…		…
131		194
132	Called whenever a selection has been copied, but before the selection is	195	Called whenever a selection has been copied, but before the selection is
133	requested from the server. The selection text can be queried and changed	196	requested from the server. The selection text can be queried and changed
134	by calling C<< $term->selection >>.	197	by calling C<< $term->selection >>.
135		198
136	Returning a true value aborts selection grabbing. It will still be hilighted.	199	Returning a true value aborts selection grabbing. It will still be highlighted.
137		200
138	=item on_sel_extend $term	201	=item on_sel_extend $term
139		202
140	Called whenever the user tries to extend the selection (e.g. with a double	203	Called whenever the user tries to extend the selection (e.g. with a double
141	click) and is either supposed to return false (normal operation), or	204	click) and is either supposed to return false (normal operation), or
142	should extend the selection itelf and return true to suppress the built-in	205	should extend the selection itself and return true to suppress the built-in
143	processing.	206	processing. This can happen multiple times, as long as the callback
		207	returns true, it will be called on every further click by the user and is
		208	supposed to enlarge the selection more and more, if possible.
144		209
145	See the F<selection> example extension.	210	See the F<selection> example extension.
146		211
147	=item on_focus_in $term
148
149	Called whenever the window gets the keyboard focus, before urxvt does
150	focus in processing.
151
152	=item on_focus_out $term
153
154	Called wheneever the window loses keyboard focus, before urxvt does focus
155	out processing.
156
157	=item on_view_change $term, $offset	212	=item on_view_change $term, $offset
158		213
159	Called whenever the view offset changes, i..e the user or program	214	Called whenever the view offset changes, i.e. the user or program
160	scrolls. Offset C<0> means display the normal terminal, positive values	215	scrolls. Offset C<0> means display the normal terminal, positive values
161	show this many lines of scrollback.	216	show this many lines of scrollback.
162		217
163	=item on_scroll_back $term, $lines, $saved	218	=item on_scroll_back $term, $lines, $saved
164		219
…		…
168		223
169	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,	224	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,
170	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total	225	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total
171	number of lines that will be in the scrollback buffer.	226	number of lines that will be in the scrollback buffer.
172		227
173	=item on_tty_activity $term *NYI*
174
175	Called whenever the program(s) running in the urxvt window send output.
176
177	=item on_osc_seq $term, $string	228	=item on_osc_seq $term, $op, $args, $resp
178		229
		230	Called on every OSC sequence and can be used to suppress it or modify its
		231	behaviour. The default should be to return an empty list. A true value
		232	suppresses execution of the request completely. Make sure you don't get
		233	confused by recursive invocations when you output an OSC sequence within
		234	this callback.
		235
		236	C<on_osc_seq_perl> should be used for new behaviour.
		237
		238	=item on_osc_seq_perl $term, $args, $resp
		239
179	Called whenever the B<ESC ] 777 ; string ST> command sequence is	240	Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =
180	processed. Cursor position and other state information is up-to-date when	241	operating system command) is processed. Cursor position and other state
181	this happens. For interoperability, the string should start with the	242	information is up-to-date when this happens. For interoperability, the
182	extension name and a colon, to distinguish it from commands for other	243	string should start with the extension name (sans -osc) and a semicolon,
183	extensions, and this might be enforced in the future.	244	to distinguish it from commands for other extensions, and this might be
		245	enforced in the future.
		246
		247	For example, C<overlay-osc> uses this:
		248
		249	sub on_osc_seq_perl {
		250	my ($self, $osc, $resp) = @_;
		251
		252	return unless $osc =~ s/^overlay;//;
		253
		254	... process remaining $osc string
		255	}
		256
		257	Be careful not ever to trust (in a security sense) the data you receive,
		258	as its source can not easily be controlled (e-mail content, messages from
		259	other users on the same system etc.).
		260
		261	For responses, C<$resp> contains the end-of-args separator used by the
		262	sender.
		263
		264	=item on_add_lines $term, $string
		265
		266	Called whenever text is about to be output, with the text as argument. You
		267	can filter/change and output the text yourself by returning a true value
		268	and calling C<< $term->scr_add_lines >> yourself. Please note that this
		269	might be very slow, however, as your hook is called for B<all> text being
		270	output.
		271
		272	=item on_tt_write $term, $octets
		273
		274	Called whenever some data is written to the tty/pty and can be used to
		275	suppress or filter tty input.
		276
		277	=item on_tt_paste $term, $octets
		278
		279	Called whenever text is about to be pasted, with the text as argument. You
		280	can filter/change and paste the text yourself by returning a true value
		281	and calling C<< $term->tt_paste >> yourself. C<$octets> is
		282	locale-encoded.
		283
		284	=item on_line_update $term, $row
		285
		286	Called whenever a line was updated or changed. Can be used to filter
		287	screen output (e.g. underline urls or other useless stuff). Only lines
		288	that are being shown will be filtered, and, due to performance reasons,
		289	not always immediately.
		290
		291	The row number is always the topmost row of the line if the line spans
		292	multiple rows.
		293
		294	Please note that, if you change the line, then the hook might get called
		295	later with the already-modified line (e.g. if unrelated parts change), so
		296	you cannot just toggle rendition bits, but only set them.
184		297
185	=item on_refresh_begin $term	298	=item on_refresh_begin $term
186		299
187	Called just before the screen gets redrawn. Can be used for overlay	300	Called just before the screen gets redrawn. Can be used for overlay or
188	or similar effects by modify terminal contents in refresh_begin, and	301	similar effects by modifying the terminal contents in refresh_begin, and
189	restoring them in refresh_end. The built-in overlay and selection display	302	restoring them in refresh_end. The built-in overlay and selection display
190	code is run after this hook, and takes precedence.	303	code is run after this hook, and takes precedence.
191		304
192	=item on_refresh_end $term	305	=item on_refresh_end $term
193		306
194	Called just after the screen gets redrawn. See C<on_refresh_begin>.	307	Called just after the screen gets redrawn. See C<on_refresh_begin>.
195		308
		309	=item on_action $term, $string
		310
		311	Called whenever an action is invoked for the corresponding extension
		312	(e.g. via a C<extension:string> builtin action bound to a key, see
		313	description of the B<keysym> resource in the urxvt(1) manpage). The
		314	event is simply the action string. Note that an action event is always
		315	associated to a single extension.
		316
196	=item on_keyboard_command $term, $string	317	=item on_user_command $term, $string *DEPRECATED*
197		318
198	Called whenever the user presses a key combination that has a	319	Called whenever a user-configured event is being activated (e.g. via
199	C<perl:string> action bound to it (see description of the B<keysym>	320	a C<perl:string> action bound to a key, see description of the B<keysym>
200	resource in the @@RXVT_NAME@@(1) manpage).	321	resource in the urxvt(1) manpage).
		322
		323	The event is simply the action string. This interface is going away in
		324	preference to the C<on_action> hook.
		325
		326	=item on_resize_all_windows $term, $new_width, $new_height
		327
		328	Called just after the new window size has been calculated, but before
		329	windows are actually being resized or hints are being set. If this hook
		330	returns a true value, setting of the window hints is being skipped.
		331
		332	=item on_x_event $term, $event
		333
		334	Called on every X event received on the vt window (and possibly other
		335	windows). Should only be used as a last resort. Most event structure
		336	members are not passed.
		337
		338	=item on_root_event $term, $event
		339
		340	Like C<on_x_event>, but is called for events on the root window.
		341
		342	=item on_focus_in $term
		343
		344	Called whenever the window gets the keyboard focus, before rxvt-unicode
		345	does focus in processing.
		346
		347	=item on_focus_out $term
		348
		349	Called whenever the window loses keyboard focus, before rxvt-unicode does
		350	focus out processing.
		351
		352	=item on_configure_notify $term, $event
		353
		354	=item on_property_notify $term, $event
		355
		356	=item on_key_press $term, $event, $keysym, $octets
		357
		358	=item on_key_release $term, $event, $keysym
		359
		360	=item on_button_press $term, $event
		361
		362	=item on_button_release $term, $event
		363
		364	=item on_motion_notify $term, $event
		365
		366	=item on_map_notify $term, $event
		367
		368	=item on_unmap_notify $term, $event
		369
		370	Called whenever the corresponding X event is received for the terminal. If
		371	the hook returns true, then the event will be ignored by rxvt-unicode.
		372
		373	The event is a hash with most values as named by Xlib (see the XEvent
		374	manpage), with the additional members C<row> and C<col>, which are the
		375	(real, not screen-based) row and column under the mouse cursor.
		376
		377	C<on_key_press> additionally receives the string rxvt-unicode would
		378	output, if any, in locale-specific encoding.
		379
		380	=item on_client_message $term, $event
		381
		382	=item on_wm_protocols $term, $event
		383
		384	=item on_wm_delete_window $term, $event
		385
		386	Called when various types of ClientMessage events are received (all with
		387	format=32, WM_PROTOCOLS or WM_PROTOCOLS:WM_DELETE_WINDOW).
		388
		389	=item on_bell $term
		390
		391	Called on receipt of a bell character.
201		392
202	=back	393	=back
203		394
		395	=cut
		396
		397	package urxvt;
		398
		399	use utf8;
		400	use strict 'vars';
		401	use Carp ();
		402	use Scalar::Util ();
		403	use List::Util ();
		404
		405	our $VERSION = 1;
		406	our $TERM;
		407	our @TERM_INIT; # should go, prevents async I/O etc.
		408	our @TERM_EXT; # should go, prevents async I/O etc.
		409	our @HOOKNAME;
		410	our %HOOKTYPE = map +($HOOKNAME[$_] => $_), 0..$#HOOKNAME;
		411	our %OPTION;
		412
		413	our $LIBDIR;
		414	our $RESNAME;
		415	our $RESCLASS;
		416	our $RXVTNAME;
		417
		418	our $NOCHAR = chr 0xffff;
		419
204	=head2 Variables in the C<urxvt> Package	420	=head2 Variables in the C<urxvt> Package
205		421
206	=over 4	422	=over 4
207		423
		424	=item $urxvt::LIBDIR
		425
		426	The rxvt-unicode library directory, where, among other things, the perl
		427	modules and scripts are stored.
		428
		429	=item $urxvt::RESCLASS, $urxvt::RESCLASS
		430
		431	The resource class and name rxvt-unicode uses to look up X resources.
		432
		433	=item $urxvt::RXVTNAME
		434
		435	The basename of the installed binaries, usually C<urxvt>.
		436
208	=item $urxvt::TERM	437	=item $urxvt::TERM
209		438
210	The current terminal. Whenever a callback/Hook is bein executed, this	439	The current terminal. This variable stores the current C<urxvt::term>
211	variable stores the current C<urxvt::term> object.	440	object, whenever a callback/hook is executing.
		441
		442	=item @urxvt::TERM_INIT
		443
		444	All code references in this array will be called as methods of the next newly
		445	created C<urxvt::term> object (during the C<on_init> phase). The array
		446	gets cleared before the code references that were in it are being executed,
		447	so references can push themselves onto it again if they so desire.
		448
		449	This complements to the perl-eval command line option, but gets executed
		450	first.
		451
		452	=item @urxvt::TERM_EXT
		453
		454	Works similar to C<@TERM_INIT>, but contains perl package/class names, which
		455	get registered as normal extensions after calling the hooks in C<@TERM_INIT>
		456	but before other extensions. Gets cleared just like C<@TERM_INIT>.
212		457
213	=back	458	=back
214		459
215	=head2 Functions in the C<urxvt> Package	460	=head2 Functions in the C<urxvt> Package
216		461
217	=over 4	462	=over 4
218		463
219	=item urxvt::fatal $errormessage	464	=item urxvt::fatal $errormessage
220		465
221	Fatally aborts execution with the given error message. Avoid at all	466	Fatally aborts execution with the given error message (which should
222	costs! The only time this is acceptable is when the terminal process	467	include a trailing newline). Avoid at all costs! The only time this
223	starts up.	468	is acceptable (and useful) is in the init hook, where it prevents the
		469	terminal from starting up.
224		470
225	=item urxvt::warn $string	471	=item urxvt::warn $string
226		472
227	Calls C<rxvt_warn> with the given string which should not include a	473	Calls C<rxvt_warn> with the given string which should include a trailing
228	newline. The module also overwrites the C<warn> builtin with a function	474	newline. The module also overwrites the C<warn> builtin with a function
229	that calls this function.	475	that calls this function.
230		476
231	Using this function has the advantage that its output ends up in the	477	Using this function has the advantage that its output ends up in the
232	correct place, e.g. on stderr of the connecting urxvtc client.	478	correct place, e.g. on stderr of the connecting urxvtc client.
233		479
		480	Messages have a size limit of 1023 bytes currently.
		481
		482	=item @terms = urxvt::termlist
		483
		484	Returns all urxvt::term objects that exist in this process, regardless of
		485	whether they are started, being destroyed etc., so be careful. Only term
		486	objects that have perl extensions attached will be returned (because there
		487	is no urxvt::term object associated with others).
		488
234	=item $time = urxvt::NOW	489	=item $time = urxvt::NOW
235		490
236	Returns the "current time" (as per the event loop).	491	Returns the "current time" (as per the event loop).
		492
		493	=item urxvt::CurrentTime
		494
		495	=item urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,
		496	Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,
		497	Button4Mask, Button5Mask, AnyModifier
		498
		499	=item urxvt::NoEventMask, KeyPressMask, KeyReleaseMask,
		500	ButtonPressMask, ButtonReleaseMask, EnterWindowMask, LeaveWindowMask,
		501	PointerMotionMask, PointerMotionHintMask, Button1MotionMask, Button2MotionMask,
		502	Button3MotionMask, Button4MotionMask, Button5MotionMask, ButtonMotionMask,
		503	KeymapStateMask, ExposureMask, VisibilityChangeMask, StructureNotifyMask,
		504	ResizeRedirectMask, SubstructureNotifyMask, SubstructureRedirectMask,
		505	FocusChangeMask, PropertyChangeMask, ColormapChangeMask, OwnerGrabButtonMask
		506
		507	=item urxvt::KeyPress, KeyRelease, ButtonPress, ButtonRelease, MotionNotify,
		508	EnterNotify, LeaveNotify, FocusIn, FocusOut, KeymapNotify, Expose,
		509	GraphicsExpose, NoExpose, VisibilityNotify, CreateNotify, DestroyNotify,
		510	UnmapNotify, MapNotify, MapRequest, ReparentNotify, ConfigureNotify,
		511	ConfigureRequest, GravityNotify, ResizeRequest, CirculateNotify,
		512	CirculateRequest, PropertyNotify, SelectionClear, SelectionRequest,
		513	SelectionNotify, ColormapNotify, ClientMessage, MappingNotify
		514
		515	Various constants for use in X calls and event processing.
237		516
238	=back	517	=back
239		518
240	=head2 RENDITION	519	=head2 RENDITION
241		520
…		…
256		535
257	=item $rend = urxvt::OVERLAY_RSTYLE	536	=item $rend = urxvt::OVERLAY_RSTYLE
258		537
259	Return the rendition mask used for overlays by default.	538	Return the rendition mask used for overlays by default.
260		539
261	=item $rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline	540	=item $rendbit = urxvt::RS_Bold, urxvt::RS_Italic, urxvt::RS_Blink,
		541	urxvt::RS_RVid, urxvt::RS_Uline
262		542
263	Return the bit that enabled bold, italic, blink, reverse-video and	543	Return the bit that enabled bold, italic, blink, reverse-video and
264	underline, respectively. To enable such a style, just logically OR it into	544	underline, respectively. To enable such a style, just logically OR it into
265	the bitset.	545	the bitset.
266		546
…		…
268		548
269	=item $background = urxvt::GET_BASEBG $rend	549	=item $background = urxvt::GET_BASEBG $rend
270		550
271	Return the foreground/background colour index, respectively.	551	Return the foreground/background colour index, respectively.
272		552
273	=item $rend = urxvt::SET_FGCOLOR ($rend, $new_colour)	553	=item $rend = urxvt::SET_FGCOLOR $rend, $new_colour
274		554
275	=item $rend = urxvt::SET_BGCOLOR ($rend, $new_colour)	555	=item $rend = urxvt::SET_BGCOLOR $rend, $new_colour
		556
		557	=item $rend = urxvt::SET_COLOR $rend, $new_fg, $new_bg
276		558
277	Replace the foreground/background colour in the rendition mask with the	559	Replace the foreground/background colour in the rendition mask with the
278	specified one.	560	specified one.
279		561
280	=item $value = urxvt::GET_CUSTOM ($rend)	562	=item $value = urxvt::GET_CUSTOM $rend
281		563
282	Return the "custom" value: Every rendition has 5 bits for use by	564	Return the "custom" value: Every rendition has 5 bits for use by
283	extensions. They can be set and changed as you like and are initially	565	extensions. They can be set and changed as you like and are initially
284	zero.	566	zero.
285		567
286	=item $rend = urxvt::SET_CUSTOM ($rend, $new_value)	568	=item $rend = urxvt::SET_CUSTOM $rend, $new_value
287		569
288	Change the custom value.	570	Change the custom value.
289		571
290	=back	572	=back
291		573
292	=cut	574	=cut
293		575
294	package urxvt;
295
296	use strict;
297	use Scalar::Util ();
298
299	our $TERM;
300	our @HOOKNAME;
301	our $LIBDIR;
302
303	BEGIN {	576	BEGIN {
304	urxvt->bootstrap;
305
306	# overwrite perl's warn	577	# overwrite perl's warn
307	*CORE::GLOBAL::warn = sub {	578	*CORE::GLOBAL::warn = sub {
308	my $msg = join "", @_;	579	my $msg = join "", @_;
309	$msg .= "\n"	580	$msg .= "\n"
310	unless $msg =~ /\n$/;	581	unless $msg =~ /\n$/;
311	urxvt::warn ($msg);	582	urxvt::warn ($msg);
312	};	583	};
313	}	584	}
314		585
315	my @hook_count;	586	no warnings 'utf8';
		587
		588	sub parse_resource {
		589	my ($term, $name, $isarg, $longopt, $flag, $value) = @_;
		590
		591	$term->scan_extensions;
		592
		593	my $r = $term->{meta}{resource};
		594	keys %$r; # reset iterator
		595	while (my ($k, $v) = each %$r) {
		596	my $pattern = $k;
		597	$pattern =~ y/./-/ if $isarg;
		598	my $prefix = $name;
		599	my $suffix;
		600	if ($pattern =~ /\-$/) {
		601	$prefix = substr $name, 0, length $pattern;
		602	$suffix = substr $name, length $pattern;
		603	}
		604	if ($pattern eq $prefix) {
		605	$name = "$urxvt::RESCLASS.$k$suffix";
		606
		607	push @{ $term->{perl_ext_3} }, $v->[0];
		608
		609	if ($v->[1] eq "boolean") {
		610	$term->put_option_db ($name, $flag ? "true" : "false");
		611	return 1;
		612	} else {
		613	$term->put_option_db ($name, $value);
		614	return 1 + 2;
		615	}
		616	}
		617	}
		618
		619	0
		620	}
		621
		622	sub usage {
		623	my ($term, $usage_type) = @_;
		624
		625	$term->scan_extensions;
		626
		627	my $r = $term->{meta}{resource};
		628
		629	for my $pattern (sort keys %$r) {
		630	my ($ext, $type, $desc) = @{ $r->{$pattern} };
		631
		632	$desc .= " (-pe $ext)";
		633
		634	if ($usage_type == 1) {
		635	$pattern =~ y/./-/;
		636	$pattern =~ s/-$/-.../g;
		637
		638	if ($type eq "boolean") {
		639	urxvt::log sprintf " -%-30s %s\n", "/+$pattern", $desc;
		640	} else {
		641	urxvt::log sprintf " -%-30s %s\n", "$pattern $type", $desc;
		642	}
		643	} else {
		644	$pattern =~ s/\.$/.*/g;
		645	urxvt::log sprintf " %-31s %s\n", "$pattern:", $type;
		646	}
		647	}
		648	}
		649
316	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};	650	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};
317		651
318	sub verbose {	652	sub verbose {
319	my ($level, $msg) = @_;	653	my ($level, $msg) = @_;
320	warn "$msg\n" if $level <= $verbosity;	654	warn "$msg\n" if $level <= $verbosity;
321	}	655	}
322		656
323	# find on_xxx subs in the package and register them	657	my %extension_pkg;
324	# as hooks
325	sub register_package($) {
326	my ($pkg) = @_;
327
328	for my $htype (0.. $#HOOKNAME) {
329	my $name = $HOOKNAME[$htype];
330
331	my $ref = $pkg->can ("on_" . lc $name)
332	or next;
333
334	$TERM->{_hook}[$htype]{$pkg} = $ref;
335	$hook_count[$htype]++
336	or set_should_invoke $htype, 1;
337	}
338	}
339
340	my $script_pkg = "script0000";
341	my %script_pkg;
342		658
343	# load a single script into its own package, once only	659	# load a single script into its own package, once only
344	sub script_package($) {	660	sub extension_package($) {
345	my ($path) = @_;	661	my ($path) = @_;
346		662
347	$script_pkg{$path} ||= do {	663	$extension_pkg{$path} ||= do {
348	my $pkg = "urxvt::" . ($script_pkg++);	664	$path =~ /([^\/\\]+)$/;
		665	my $pkg = $1;
		666	$pkg =~ s/[^[:word:]]/_/g;
		667	$pkg = "urxvt::ext::$pkg";
349		668
350	verbose 3, "loading script '$path' into package '$pkg'";	669	verbose 3, "loading extension '$path' into package '$pkg'";
		670
		671	(${"$pkg\::_NAME"} = $path) =~ s/^.*[\\\/]//; # hackish
351		672
352	open my $fh, "<:raw", $path	673	open my $fh, "<:raw", $path
353	or die "$path: $!";	674	or die "$path: $!";
354		675
355	my $source = "package $pkg; use strict; use utf8;\n"	676	my $source =
		677	"package $pkg; use strict 'vars'; use utf8; no warnings 'utf8';\n"
356	. "#line 1 \"$path\"\n{\n"	678	. "#line 1 \"$path\"\n{\n"
357	. (do { local $/; <$fh> })	679	. (do { local $/; <$fh> })
358	. "\n};\n1";	680	. "\n};\n1";
359		681
		682	eval $source
360	eval $source or die "$path: $@";	683	or die "$path: $@";
361		684
362	$pkg	685	$pkg
363	}	686	}
364	}	687	}
		688
		689	our $retval; # return value for urxvt
365		690
366	# called by the rxvt core	691	# called by the rxvt core
367	sub invoke {	692	sub invoke {
368	local $TERM = shift;	693	local $TERM = shift;
369	my $htype = shift;	694	my $htype = shift;
370		695
371	if ($htype == 0) { # INIT	696	if ($htype == HOOK_INIT) {
372	my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");	697	my @dirs = $TERM->perl_libdirs;
373		698
374	for my $ext (split /:/, $TERM->resource ("perl_ext")) {	699	$TERM->scan_extensions;
		700
		701	my %ext_arg;
		702
		703	{
		704	my @init = @TERM_INIT;
		705	@TERM_INIT = ();
		706	$_->($TERM) for @init;
		707	my @pkg = @TERM_EXT;
		708	@TERM_EXT = ();
		709	$TERM->register_package ($_) for @pkg;
		710	}
		711
		712	for (
		713	(grep $_, map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2),
		714	@{ delete $TERM->{perl_ext_3} }
		715	) {
		716	if ($_ eq "default") {
		717
		718	$ext_arg{$_} = []
		719	for qw(selection option-popup selection-popup readline searchable-scrollback);
		720
		721	for ($TERM->_keysym_resources) {
		722	next if /^(?:string|command|builtin|builtin-string|perl)/;
		723	next unless /^([A-Za-z0-9_\-]+):/;
		724
		725	my $ext = $1;
		726
		727	$ext_arg{$ext} = [];
		728	}
		729
		730	} elsif (/^-(.*)$/) {
		731	delete $ext_arg{$1};
		732
		733	} elsif (/^([^<]+)<(.*)>$/) {
		734	push @{ $ext_arg{$1} }, $2;
		735
		736	} else {
		737	$ext_arg{$_} ||= [];
		738	}
		739	}
		740
		741	for my $ext (sort keys %ext_arg) {
375	my @files = grep -f $_, map "$_/$ext", @dirs;	742	my @files = grep -f $_, map "$_/$ext", @dirs;
376		743
377	if (@files) {	744	if (@files) {
378	register_package script_package $files[0];	745	$TERM->register_package (extension_package $files[0], $ext_arg{$ext});
379	} else {	746	} else {
380	warn "perl extension '$ext' not found in perl library search path\n";	747	warn "perl extension '$ext' not found in perl library search path\n";
381	}	748	}
382	}	749	}
383		750
384	} elsif ($htype == 1) { # DESTROY	751	eval "#line 1 \"--perl-eval resource/argument\"\n" . $TERM->resource ("perl_eval");
		752	warn $@ if $@;
		753	}
		754
		755	$retval = undef;
		756
385	if (my $hook = $TERM->{_hook}) {	757	if (my $cb = $TERM->{_hook}[$htype]) {
386	for my $htype (0..$#$hook) {	758	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
387	$hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} }	759	if $verbosity >= 10;
388	or set_should_invoke $htype, 0;	760
		761	if ($htype == HOOK_ACTION) {
		762	# this hook is only sent to the extension with the name
		763	# matching the first arg
		764	my $pkg = shift;
		765	$pkg =~ y/-/_/;
		766	$pkg = "urxvt::ext::$pkg";
		767
		768	$cb = $cb->{$pkg}
		769	or return undef; #TODO: maybe warn user?
		770
		771	$cb = { $pkg => $cb };
		772	}
		773
		774	for my $pkg (keys %$cb) {
		775	my $retval_ = eval { $cb->{$pkg}->($TERM->{_pkg}{$pkg} || $TERM, @_) };
		776	$retval ||= $retval_;
		777
		778	if ($@) {
		779	$TERM->ungrab; # better to lose the grab than the session
		780	warn $@;
		781	}
		782	}
		783
		784	verbose 11, "$HOOKNAME[$htype] returning <$retval>"
		785	if $verbosity >= 11;
		786	}
		787
		788	if ($htype == HOOK_DESTROY) {
		789	# clear package objects
		790	%$_ = () for values %{ $TERM->{_pkg} };
		791
		792	# clear package
		793	%$TERM = ();
		794	}
		795
		796	$retval
		797	}
		798
		799	sub SET_COLOR($$$) {
		800	SET_BGCOLOR (SET_FGCOLOR ($_[0], $_[1]), $_[2])
		801	}
		802
		803	sub rend2mask {
		804	no strict 'refs';
		805	my ($str, $mask) = (@_, 0);
		806	my %color = ( fg => undef, bg => undef );
		807	my @failed;
		808	for my $spec ( split /\s+/, $str ) {
		809	if ( $spec =~ /^([fb]g)[_:-]?(\d+)/i ) {
		810	$color{lc($1)} = $2;
		811	} else {
		812	my $neg = $spec =~ s/^[-^]//;
		813	unless ( exists &{"RS_$spec"} ) {
		814	push @failed, $spec;
		815	next;
		816	}
		817	my $cur = &{"RS_$spec"};
		818	if ( $neg ) {
		819	$mask &= ~$cur;
		820	} else {
		821	$mask |= $cur;
389	}	822	}
390	}	823	}
391	}	824	}
392		825	($mask, @color{qw(fg bg)}, \@failed)
393	my $cb = $TERM->{_hook}[$htype]
394	or return;
395
396	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
397	if $verbosity >= 10;
398
399	keys %$cb;
400
401	while (my ($pkg, $cb) = each %$cb) {
402	return 1
403	if $cb->(
404	$TERM->{$pkg} ||= do {
405	my $proxy = bless { }, urxvt::term::proxy::;
406	Scalar::Util::weaken ($proxy->{term} = $TERM);
407	$proxy
408	},
409	@_,
410	);
411	}
412
413	0
414	}	826	}
415		827
416	sub urxvt::term::proxy::AUTOLOAD {	828	package urxvt::term::extension;
417	$urxvt::term::proxy::AUTOLOAD =~ /:([^:]+)$/	829
		830	=head2 The C<urxvt::term::extension> class
		831
		832	Each extension attached to a terminal object is represented by
		833	a C<urxvt::term::extension> object.
		834
		835	You can use these objects, which are passed to all callbacks to store any
		836	state related to the terminal and extension instance.
		837
		838	The methods (And data members) documented below can be called on extension
		839	objects, in addition to call methods documented for the <urxvt::term>
		840	class.
		841
		842	=over 4
		843
		844	=item $urxvt_term = $self->{term}
		845
		846	Returns the C<urxvt::term> object associated with this instance of the
		847	extension. This member I<must not> be changed in any way.
		848
		849	=cut
		850
		851	our $AUTOLOAD;
		852
		853	sub AUTOLOAD {
		854	$AUTOLOAD =~ /:([^:]+)$/
418	or die "FATAL: \$AUTOLOAD '$urxvt::term::proxy::AUTOLOAD' unparsable";	855	or die "FATAL: \$AUTOLOAD '$AUTOLOAD' unparsable";
419		856
420	eval qq{	857	eval qq{
421	sub $urxvt::term::proxy::AUTOLOAD {	858	sub $AUTOLOAD {
422	my \$proxy = shift;	859	my \$proxy = shift;
423	\$proxy->{term}->$1 (\@_)	860	\$proxy->{term}->$1 (\@_)
424	}	861	}
425	1	862	1
426	} or die "FATAL: unable to compile method forwarder: $@";	863	} or die "FATAL: unable to compile method forwarder: $@";
427		864
428	goto &$urxvt::term::proxy::AUTOLOAD;	865	goto &$AUTOLOAD;
429	}	866	}
		867
		868	sub DESTROY {
		869	# nop
		870	}
		871
		872	# urxvt::destroy_hook (basically a cheap Guard:: implementation)
		873
		874	sub urxvt::destroy_hook::DESTROY {
		875	${$_[0]}->();
		876	}
		877
		878	sub urxvt::destroy_hook(&) {
		879	bless \shift, urxvt::destroy_hook::
		880	}
		881
		882	=item $self->enable ($hook_name => $cb[, $hook_name => $cb..])
		883
		884	Dynamically enable the given hooks (named without the C<on_> prefix) for
		885	this extension, replacing any hook previously installed via C<enable> in
		886	this extension.
		887
		888	This is useful when you want to overwrite time-critical hooks only
		889	temporarily.
		890
		891	To install additional callbacks for the same hook, you can use the C<on>
		892	method of the C<urxvt::term> class.
		893
		894	=item $self->disable ($hook_name[, $hook_name..])
		895
		896	Dynamically disable the given hooks.
		897
		898	=cut
		899
		900	sub enable {
		901	my ($self, %hook) = @_;
		902	my $pkg = $self->{_pkg};
		903
		904	while (my ($name, $cb) = each %hook) {
		905	my $htype = $HOOKTYPE{uc $name};
		906	defined $htype
		907	or Carp::croak "unsupported hook type '$name'";
		908
		909	$self->set_should_invoke ($htype, +1)
		910	unless exists $self->{term}{_hook}[$htype]{$pkg};
		911
		912	$self->{term}{_hook}[$htype]{$pkg} = $cb;
		913	}
		914	}
		915
		916	sub disable {
		917	my ($self, @hook) = @_;
		918	my $pkg = $self->{_pkg};
		919
		920	for my $name (@hook) {
		921	my $htype = $HOOKTYPE{uc $name};
		922	defined $htype
		923	or Carp::croak "unsupported hook type '$name'";
		924
		925	$self->set_should_invoke ($htype, -1)
		926	if delete $self->{term}{_hook}[$htype]{$pkg};
		927	}
		928	}
		929
		930	=item $guard = $self->on ($hook_name => $cb[, $hook_name => $cb..])
		931
		932	Similar to the C<enable> enable, but installs additional callbacks for
		933	the given hook(s) (that is, it doesn't replace existing callbacks), and
		934	returns a guard object. When the guard object is destroyed the callbacks
		935	are disabled again.
		936
		937	=cut
		938
		939	sub urxvt::extension::on_disable::DESTROY {
		940	my $disable = shift;
		941
		942	my $term = delete $disable->{""};
		943
		944	while (my ($htype, $id) = each %$disable) {
		945	delete $term->{_hook}[$htype]{$id};
		946	$term->set_should_invoke ($htype, -1);
		947	}
		948	}
		949
		950	sub on {
		951	my ($self, %hook) = @_;
		952
		953	my $term = $self->{term};
		954
		955	my %disable = ( "" => $term );
		956
		957	while (my ($name, $cb) = each %hook) {
		958	my $htype = $HOOKTYPE{uc $name};
		959	defined $htype
		960	or Carp::croak "unsupported hook type '$name'";
		961
		962	$term->set_should_invoke ($htype, +1);
		963	$term->{_hook}[$htype]{ $disable{$htype} = $cb+0 }
		964	= sub { shift; $cb->($self, @_) }; # very ugly indeed
		965	}
		966
		967	bless \%disable, "urxvt::extension::on_disable"
		968	}
		969
		970	=item $self->bind_action ($hotkey, $action)
		971
		972	=item $self->x_resource ($pattern)
		973
		974	=item $self->x_resource_boolean ($pattern)
		975
		976	These methods support an additional C<%> prefix for C<$action> or
		977	C<$pattern> when called on an extension object, compared to the
		978	C<urxvt::term> methods of the same name - see the description of these
		979	methods in the C<urxvt::term> class for details.
		980
		981	=cut
		982
		983	sub bind_action {
		984	my ($self, $hotkey, $action) = @_;
		985	$action =~ s/^%:/$_[0]{_name}:/;
		986	$self->{term}->bind_action ($hotkey, $action)
		987	}
		988
		989	sub x_resource {
		990	my ($self, $name) = @_;
		991	$name =~ s/^%(\.|$)/$_[0]{_name}$1/;
		992	$self->{term}->x_resource ($name)
		993	}
		994
		995	sub x_resource_boolean {
		996	my ($self, $name) = @_;
		997	$name =~ s/^%(\.|$)/$_[0]{_name}$1/;
		998	$self->{term}->x_resource_boolean ($name)
		999	}
		1000
		1001	=back
		1002
		1003	=cut
		1004
		1005	package urxvt::anyevent;
		1006
		1007	=head2 The C<urxvt::anyevent> Class
		1008
		1009	The sole purpose of this class is to deliver an interface to the
		1010	C<AnyEvent> module - any module using it will work inside urxvt without
		1011	further programming. The only exception is that you cannot wait on
		1012	condition variables, but non-blocking condvar use is ok.
		1013
		1014	In practical terms this means is that you cannot use blocking APIs, but
		1015	the non-blocking variant should work.
		1016
		1017	=cut
		1018
		1019	our $VERSION = '5.23';
		1020
		1021	$INC{"urxvt/anyevent.pm"} = 1; # mark us as there
		1022	push @AnyEvent::REGISTRY, [urxvt => urxvt::anyevent::];
		1023
		1024	sub timer {
		1025	my ($class, %arg) = @_;
		1026
		1027	my $cb = $arg{cb};
		1028
		1029	urxvt::timer
		1030	->new
		1031	->after ($arg{after}, $arg{interval})
		1032	->cb ($arg{interval} ? $cb : sub {
		1033	$_[0]->stop; # need to cancel manually
		1034	$cb->();
		1035	})
		1036	}
		1037
		1038	sub io {
		1039	my ($class, %arg) = @_;
		1040
		1041	my $cb = $arg{cb};
		1042	my $fd = fileno $arg{fh};
		1043	defined $fd or $fd = $arg{fh};
		1044
		1045	bless [$arg{fh}, urxvt::iow
		1046	->new
		1047	->fd ($fd)
		1048	->events (($arg{poll} =~ /r/ ? 1 : 0)
		1049	| ($arg{poll} =~ /w/ ? 2 : 0))
		1050	->start
		1051	->cb ($cb)
		1052	], urxvt::anyevent::
		1053	}
		1054
		1055	sub idle {
		1056	my ($class, %arg) = @_;
		1057
		1058	my $cb = $arg{cb};
		1059
		1060	urxvt::iw
		1061	->new
		1062	->start
		1063	->cb ($cb)
		1064	}
		1065
		1066	sub child {
		1067	my ($class, %arg) = @_;
		1068
		1069	my $cb = $arg{cb};
		1070
		1071	urxvt::pw
		1072	->new
		1073	->start ($arg{pid})
		1074	->cb (sub {
		1075	$_[0]->stop; # need to cancel manually
		1076	$cb->($_[0]->rpid, $_[0]->rstatus);
		1077	})
		1078	}
		1079
		1080	sub DESTROY {
		1081	$_[0][1]->stop;
		1082	}
		1083
		1084	# only needed for AnyEvent < 6 compatibility
		1085	sub one_event {
		1086	Carp::croak "AnyEvent->one_event blocking wait unsupported in urxvt, use a non-blocking API";
		1087	}
		1088
		1089	package urxvt::term;
430		1090
431	=head2 The C<urxvt::term> Class	1091	=head2 The C<urxvt::term> Class
432		1092
433	=over 4	1093	=over 4
		1094
		1095	=cut
		1096
		1097	# find on_xxx subs in the package and register them
		1098	# as hooks
		1099	sub register_package {
		1100	my ($self, $pkg, $argv) = @_;
		1101
		1102	no strict 'refs';
		1103
		1104	urxvt::verbose 6, "register package $pkg to $self";
		1105
		1106	@{"$pkg\::ISA"} = urxvt::term::extension::;
		1107
		1108	my $proxy = bless {
		1109	_pkg => $pkg,
		1110	_name => ${"$pkg\::_NAME"}, # hackish
		1111	argv => $argv,
		1112	}, $pkg;
		1113	Scalar::Util::weaken ($proxy->{term} = $self);
		1114
		1115	$self->{_pkg}{$pkg} = $proxy;
		1116
		1117	for my $name (@HOOKNAME) {
		1118	if (my $ref = $pkg->can ("on_" . lc $name)) {
		1119	$proxy->enable ($name => $ref);
		1120	}
		1121	}
		1122	}
		1123
		1124	sub perl_libdirs {
		1125	map { split /:/ }
		1126	$_[0]->resource ("perl_lib"),
		1127	$ENV{URXVT_PERL_LIB},
		1128	"$ENV{HOME}/.urxvt/ext",
		1129	"$LIBDIR/perl"
		1130	}
		1131
		1132	# scan for available extensions and collect their metadata
		1133	sub scan_extensions {
		1134	my ($self) = @_;
		1135
		1136	return if exists $self->{meta};
		1137
		1138	my @urxvtdirs = perl_libdirs $self;
		1139	# my @cpandirs = grep -d, map "$_/URxvt/Ext", @INC;
		1140
		1141	$self->{meta} = \my %meta;
		1142
		1143	# first gather extensions
		1144
		1145	my $gather = sub {
		1146	my ($dir, $core) = @_;
		1147
		1148	opendir my $fh, $dir
		1149	or return;
		1150
		1151	for my $ext (readdir $fh) {
		1152	$ext !~ /^\./
		1153	or next;
		1154
		1155	open my $fh, "<", "$dir/$ext"
		1156	or next;
		1157
		1158	-f $fh
		1159	or next;
		1160
		1161	$ext =~ s/\.uext$// or $core
		1162	or next;
		1163
		1164	my %ext = (dir => $dir);
		1165
		1166	while (<$fh>) {
		1167	if (/^#:META:(?:X_)?RESOURCE:(.*)/) {
		1168	my ($pattern, $type, $desc) = split /:/, $1;
		1169	$pattern =~ s/^%(\.|$)/$ext$1/g; # % in pattern == extension name
		1170	if ($pattern =~ /[^a-zA-Z0-9\-\.]/) {
		1171	warn "$dir/$ext: meta resource '$pattern' contains illegal characters (not alphanumeric nor . nor *)\n";
		1172	} else {
		1173	$ext{resource}{$pattern} = [$ext, $type, $desc];
		1174	}
		1175	} elsif (/^\s*(?:#|$)/) {
		1176	# skip other comments and empty lines
		1177	} else {
		1178	last; # stop parsing on first non-empty non-comment line
		1179	}
		1180	}
		1181
		1182	$meta{ext}{$ext} = \%ext;
		1183	}
		1184	};
		1185
		1186	# $gather->($_, 0) for @cpandirs;
		1187	$gather->($_, 1) for @urxvtdirs;
		1188
		1189	# and now merge resources
		1190
		1191	$meta{resource} = \my %resource;
		1192
		1193	while (my ($k, $v) = each %{ $meta{ext} }) {
		1194	#TODO: should check for extensions overriding each other
		1195	%resource = (%resource, %{ $v->{resource} });
		1196	}
		1197	}
		1198
		1199	=item $term = new urxvt::term $envhashref, $rxvtname, [arg...]
		1200
		1201	Creates a new terminal, very similar as if you had started it with system
		1202	C<$rxvtname, arg...>. C<$envhashref> must be a reference to a C<%ENV>-like
		1203	hash which defines the environment of the new terminal.
		1204
		1205	Croaks (and probably outputs an error message) if the new instance
		1206	couldn't be created. Returns C<undef> if the new instance didn't
		1207	initialise perl, and the terminal object otherwise. The C<init> and
		1208	C<start> hooks will be called before this call returns, and are free to
		1209	refer to global data (which is race free).
		1210
		1211	=cut
		1212
		1213	sub new {
		1214	my ($class, $env, @args) = @_;
		1215
		1216	$env or Carp::croak "environment hash missing in call to urxvt::term->new";
		1217	@args or Carp::croak "name argument missing in call to urxvt::term->new";
		1218
		1219	_new ([ map "$_=$env->{$_}", keys %$env ], \@args);
		1220	}
		1221
		1222	=item $term->destroy
		1223
		1224	Destroy the terminal object (close the window, free resources
		1225	etc.). Please note that urxvt will not exit as long as any event
		1226	watchers (timers, io watchers) are still active.
		1227
		1228	=item $term->exec_async ($cmd[, @args])
		1229
		1230	Works like the combination of the C<fork>/C<exec> builtins, which executes
		1231	("starts") programs in the background. This function takes care of setting
		1232	the user environment before exec'ing the command (e.g. C<PATH>) and should
		1233	be preferred over explicit calls to C<exec> or C<system>.
		1234
		1235	Returns the pid of the subprocess or C<undef> on error.
		1236
		1237	=cut
		1238
		1239	sub exec_async {
		1240	my $self = shift;
		1241
		1242	my $pid = fork;
		1243
		1244	return $pid
		1245	if !defined $pid or $pid;
		1246
		1247	%ENV = %{ $self->env };
		1248
		1249	exec @_;
		1250	urxvt::_exit 255;
		1251	}
		1252
		1253	=item $isset = $term->option ($optval[, $set])
		1254
		1255	Returns true if the option specified by C<$optval> is enabled, and
		1256	optionally change it. All option values are stored by name in the hash
		1257	C<%urxvt::OPTION>. Options not enabled in this binary are not in the hash.
		1258
		1259	Here is a likely non-exhaustive list of option names, please see the
		1260	source file F</src/optinc.h> to see the actual list:
		1261
		1262	borderLess buffered console cursorBlink cursorUnderline hold iconic
		1263	insecure intensityStyles iso14755 iso14755_52 jumpScroll loginShell
		1264	mapAlert meta8 mouseWheelScrollPage override_redirect pastableTabs
		1265	pointerBlank reverseVideo scrollBar scrollBar_floating scrollBar_right
		1266	scrollTtyKeypress scrollTtyOutput scrollWithBuffer secondaryScreen
		1267	secondaryScroll skipBuiltinGlyphs skipScroll transparent tripleclickwords
		1268	urgentOnBell utmpInhibit visualBell
434		1269
435	=item $value = $term->resource ($name[, $newval])	1270	=item $value = $term->resource ($name[, $newval])
436		1271
437	Returns the current resource value associated with a given name and	1272	Returns the current resource value associated with a given name and
438	optionally sets a new value. Setting values is most useful in the C<init>	1273	optionally sets a new value. Setting values is most useful in the C<init>
…		…
447	likely change).	1282	likely change).
448		1283
449	Please note that resource strings will currently only be freed when the	1284	Please note that resource strings will currently only be freed when the
450	terminal is destroyed, so changing options frequently will eat memory.	1285	terminal is destroyed, so changing options frequently will eat memory.
451		1286
452	Here is a a likely non-exhaustive list of resource names, not all of which	1287	Here is a likely non-exhaustive list of resource names, not all of which
453	are supported in every build, please see the source to see the actual	1288	are supported in every build, please see the source file F</src/rsinc.h>
454	list:	1289	to see the actual list:
455		1290
456	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont	1291	answerbackstring backgroundPixmap backspace_key blurradius
457	borderLess color cursorBlink cursorUnderline cutchars delete_key	1292	boldFont boldItalicFont borderLess buffered chdir color cursorBlink
458	display_name embed ext_bwidth fade font geometry hold iconName	1293	cursorUnderline cutchars delete_key depth display_name embed ext_bwidth
459	imFont imLocale inputMethod insecure int_bwidth intensityStyles	1294	fade font geometry hold iconName iconfile imFont imLocale inputMethod
		1295	insecure int_bwidth intensityStyles iso14755 iso14755_52 italicFont
460	italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier	1296	jumpScroll letterSpace lineSpace loginShell mapAlert meta8 modifier
461	mouseWheelScrollPage name pastableTabs path perl_eval perl_ext	1297	mouseWheelScrollPage name override_redirect pastableTabs path perl_eval
462	perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd	1298	perl_ext_1 perl_ext_2 perl_lib pointerBlank pointerBlankDelay
463	reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating	1299	preeditType print_pipe pty_fd reverseVideo saveLines scrollBar
464	scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput	1300	scrollBar_align scrollBar_floating scrollBar_right scrollBar_thickness
465	scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle	1301	scrollTtyKeypress scrollTtyOutput scrollWithBuffer scrollstyle
466	shade term_name title transparent transparent_all tripleclickwords	1302	secondaryScreen secondaryScroll shade skipBuiltinGlyphs skipScroll
		1303	term_name title transient_for transparent tripleclickwords urgentOnBell
467	utmpInhibit visualBell	1304	utmpInhibit visualBell
468		1305
469	=cut	1306	=cut
470		1307
471	sub urxvt::term::resource($$;$) {	1308	sub resource($$;$) {
472	my ($self, $name) = (shift, shift);	1309	my ($self, $name) = (shift, shift);
473	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);	1310	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);
474	goto &urxvt::term::_resource;	1311	goto &urxvt::term::_resource
475	}	1312	}
		1313
		1314	=item $value = $term->x_resource ($pattern)
		1315
		1316	Returns the X-Resource for the given pattern, excluding the program or
		1317	class name, i.e. C<< $term->x_resource ("boldFont") >> should return the
		1318	same value as used by this instance of rxvt-unicode. Returns C<undef> if no
		1319	resource with that pattern exists.
		1320
		1321	Extensions that define extra resources also need to call this method
		1322	to access their values.
		1323
		1324	If the method is called on an extension object (basically, from an
		1325	extension), then the special prefix C<%.> will be replaced by the name of
		1326	the extension and a dot, and the lone string C<%> will be replaced by the
		1327	extension name itself. This makes it possible to code extensions so you
		1328	can rename them and get a new set of resources without having to change
		1329	the actual code.
		1330
		1331	This method should only be called during the C<on_start> hook, as there is
		1332	only one resource database per display, and later invocations might return
		1333	the wrong resources.
		1334
		1335	=item $value = $term->x_resource_boolean ($pattern)
		1336
		1337	Like C<x_resource>, above, but interprets the string value as a boolean
		1338	and returns C<1> for true values, C<0> for false values and C<undef> if
		1339	the resource or option isn't specified.
		1340
		1341	You should always use this method to parse boolean resources.
		1342
		1343	=cut
		1344
		1345	sub x_resource_boolean {
		1346	my $res = &x_resource;
		1347
		1348	$res =~ /^\s*(?:true|yes|on|1)\s*$/i ? 1 : defined $res && 0
		1349	}
		1350
		1351	=item $action = $term->lookup_keysym ($keysym, $state)
		1352
		1353	Returns the action bound to key combination C<($keysym, $state)>,
		1354	if a binding for it exists, and C<undef> otherwise.
		1355
		1356	=item $success = $term->bind_action ($key, $action)
		1357
		1358	Adds a key binding exactly as specified via a C<keysym> resource. See the
		1359	C<keysym> resource in the urxvt(1) manpage.
		1360
		1361	To add default bindings for actions, an extension should call C<<
		1362	->bind_action >> in its C<init> hook for every such binding. Doing it
		1363	in the C<init> hook allows users to override or remove the binding
		1364	again.
		1365
		1366	Example: the C<searchable-scrollback> by default binds itself
		1367	on C<Meta-s>, using C<< $self->bind_action >>, which calls C<<
		1368	$term->bind_action >>.
		1369
		1370	sub init {
		1371	my ($self) = @_;
		1372
		1373	$self->bind_action ("M-s" => "%:start");
		1374	}
		1375
		1376	=item $rend = $term->rstyle ([$new_rstyle])
		1377
		1378	Return and optionally change the current rendition. Text that is output by
		1379	the terminal application will use this style.
		1380
		1381	=item ($row, $col) = $term->screen_cur ([$row, $col])
		1382
		1383	Return the current coordinates of the text cursor position and optionally
		1384	set it (which is usually bad as applications don't expect that).
476		1385
477	=item ($row, $col) = $term->selection_mark ([$row, $col])	1386	=item ($row, $col) = $term->selection_mark ([$row, $col])
478		1387
479	=item ($row, $col) = $term->selection_beg ([$row, $col])	1388	=item ($row, $col) = $term->selection_beg ([$row, $col])
480		1389
481	=item ($row, $col) = $term->selection_end ([$row, $col])	1390	=item ($row, $col) = $term->selection_end ([$row, $col])
482		1391
483	Return the current values of the selection mark, begin or end positions,	1392	Return the current values of the selection mark, begin or end positions.
484	and optionally set them to new values.
485		1393
		1394	When arguments are given, then the selection coordinates are set to
		1395	C<$row> and C<$col>, and the selection screen is set to the current
		1396	screen.
		1397
		1398	=item $screen = $term->selection_screen ([$screen])
		1399
		1400	Returns the current selection screen, and then optionally sets it.
		1401
		1402	=item $term->selection_make ($eventtime[, $rectangular])
		1403
		1404	Tries to make a selection as set by C<selection_beg> and
		1405	C<selection_end>. If C<$rectangular> is true (default: false), a
		1406	rectangular selection will be made. This is the preferred function to make
		1407	a selection.
		1408
486	=item $success = $term->selection_grab ($eventtime)	1409	=item $success = $term->selection_grab ($eventtime[, $clipboard])
487		1410
488	Try to request the primary selection from the server (for example, as set	1411	Try to acquire ownership of the primary (clipboard if C<$clipboard> is
489	by the next method).	1412	true) selection from the server. The corresponding text can be set
		1413	with the next method. No visual feedback will be given. This function
		1414	is mostly useful from within C<on_sel_grab> hooks.
490		1415
491	=item $oldtext = $term->selection ([$newtext])	1416	=item $oldtext = $term->selection ([$newtext, $clipboard])
492		1417
493	Return the current selection text and optionally replace it by C<$newtext>.	1418	Return the current selection (clipboard if C<$clipboard> is true) text
		1419	and optionally replace it by C<$newtext>.
494		1420
		1421	=item $term->selection_clear ([$clipboard])
		1422
		1423	Revoke ownership of the primary (clipboard if C<$clipboard> is true) selection.
		1424
495	#=item $term->overlay ($x, $y, $text)	1425	=item $term->overlay_simple ($x, $y, $text)
496	#	1426
497	#Create a simple multi-line overlay box. See the next method for details.	1427	Create a simple multi-line overlay box. See the next method for details.
498	#	1428
499	#=cut	1429	=cut
500		1430
501	sub urxvt::term::scr_overlay {	1431	sub overlay_simple {
502	die;
503	my ($self, $x, $y, $text) = @_;	1432	my ($self, $x, $y, $text) = @_;
504		1433
505	my @lines = split /\n/, $text;	1434	my @lines = split /\n/, $text;
506		1435
507	my $w = 0;	1436	my $w = List::Util::max map $self->strwidth ($_), @lines;
508	for (map $self->strwidth ($_), @lines) {
509	$w = $_ if $w < $_;
510	}
511		1437
512	$self->scr_overlay_new ($x, $y, $w, scalar @lines);	1438	my $overlay = $self->overlay ($x, $y, $w, scalar @lines);
513	$self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;	1439	$overlay->set (0, $_, $lines[$_]) for 0.. $#lines;
		1440
		1441	$overlay
514	}	1442	}
515		1443
516	=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])	1444	=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
517		1445
518	Create a new (empty) overlay at the given position with the given	1446	Create a new (empty) overlay at the given position with the given
…		…
530		1458
531	The methods currently supported on C<urxvt::overlay> objects are:	1459	The methods currently supported on C<urxvt::overlay> objects are:
532		1460
533	=over 4	1461	=over 4
534		1462
535	=item $overlay->set ($x, $y, $text, $rend)	1463	=item $overlay->set ($x, $y, $text[, $rend])
536		1464
537	Similar to C<< $term->ROW_t >> and C<< $term->ROW_r >> in that it puts	1465	Similar to C<< $term->ROW_t >> and C<< $term->ROW_r >> in that it puts
538	text in rxvt-unicode's special encoding and an array of rendition values	1466	text in rxvt-unicode's special encoding and an array of rendition values
539	at a specific position inside the overlay.	1467	at a specific position inside the overlay.
540		1468
		1469	If C<$rend> is missing, then the rendition will not be changed.
		1470
541	=item $overlay->hide	1471	=item $overlay->hide
542		1472
543	If visible, hide the overlay, but do not destroy it.	1473	If visible, hide the overlay, but do not destroy it.
544		1474
545	=item $overlay->show	1475	=item $overlay->show
546		1476
547	If hidden, display the overlay again.	1477	If hidden, display the overlay again.
548		1478
549	=back	1479	=back
550		1480
		1481	=item $popup = $term->popup ($event)
		1482
		1483	Creates a new C<urxvt::popup> object that implements a popup menu. The
		1484	C<$event> I<must> be the event causing the menu to pop up (a button event,
		1485	currently).
		1486
		1487	=cut
		1488
		1489	sub popup {
		1490	my ($self, $event) = @_;
		1491
		1492	$self->grab ($event->{time}, 1)
		1493	or return;
		1494
		1495	my $popup = bless {
		1496	term => $self,
		1497	event => $event,
		1498	}, urxvt::popup::;
		1499
		1500	Scalar::Util::weaken $popup->{term};
		1501
		1502	$self->{_destroy}{$popup} = urxvt::destroy_hook { $popup->{popup}->destroy };
		1503	Scalar::Util::weaken $self->{_destroy}{$popup};
		1504
		1505	$popup
		1506	}
		1507
551	=item $cellwidth = $term->strwidth $string	1508	=item $cellwidth = $term->strwidth ($string)
552		1509
553	Returns the number of screen-cells this string would need. Correctly	1510	Returns the number of screen-cells this string would need. Correctly
554	accounts for wide and combining characters.	1511	accounts for wide and combining characters.
555		1512
556	=item $octets = $term->locale_encode $string	1513	=item $octets = $term->locale_encode ($string)
557		1514
558	Convert the given text string into the corresponding locale encoding.	1515	Convert the given text string into the corresponding locale encoding.
559		1516
560	=item $string = $term->locale_decode $octets	1517	=item $string = $term->locale_decode ($octets)
561		1518
562	Convert the given locale-encoded octets into a perl string.	1519	Convert the given locale-encoded octets into a perl string.
563		1520
		1521	=item $term->scr_xor_span ($beg_row, $beg_col, $end_row, $end_col[, $rstyle])
		1522
		1523	XORs the rendition values in the given span with the provided value
		1524	(default: C<RS_RVid>), which I<MUST NOT> contain font styles. Useful in
		1525	refresh hooks to provide effects similar to the selection.
		1526
		1527	=item $term->scr_xor_rect ($beg_row, $beg_col, $end_row, $end_col[, $rstyle1[, $rstyle2]])
		1528
		1529	Similar to C<scr_xor_span>, but xors a rectangle instead. Trailing
		1530	whitespace will additionally be xored with the C<$rstyle2>, which defaults
		1531	to C<RS_RVid | RS_Uline>, which removes reverse video again and underlines
		1532	it instead. Both styles I<MUST NOT> contain font styles.
		1533
		1534	=item $term->scr_bell
		1535
		1536	Ring the bell!
		1537
		1538	=item $term->scr_add_lines ($string)
		1539
		1540	Write the given text string to the screen, as if output by the application
		1541	running inside the terminal. It may not contain command sequences (escape
		1542	codes - see C<cmd_parse> for that), but is free to use line feeds,
		1543	carriage returns and tabs. The string is a normal text string, not in
		1544	locale-dependent encoding.
		1545
		1546	Normally its not a good idea to use this function, as programs might be
		1547	confused by changes in cursor position or scrolling. Its useful inside a
		1548	C<on_add_lines> hook, though.
		1549
		1550	=item $term->scr_change_screen ($screen)
		1551
		1552	Switch to given screen - 0 primary, 1 secondary.
		1553
		1554	=item $term->cmd_parse ($octets)
		1555
		1556	Similar to C<scr_add_lines>, but the argument must be in the
		1557	locale-specific encoding of the terminal and can contain command sequences
		1558	(escape codes) that will be interpreted.
		1559
564	=item $term->tt_write ($octets)	1560	=item $term->tt_write ($octets)
565		1561
566	Write the octets given in C<$data> to the tty (i.e. as program input). To	1562	Write the octets given in C<$octets> to the tty (i.e. as user input
		1563	to the program, see C<cmd_parse> for the opposite direction). To pass
567	pass characters instead of octets, you should convert your strings first	1564	characters instead of octets, you should convert your strings first to the
568	to the locale-specific encoding using C<< $term->locale_encode >>.	1565	locale-specific encoding using C<< $term->locale_encode >>.
569		1566
		1567	=item $term->tt_write_user_input ($octets)
		1568
		1569	Like C<tt_write>, but should be used when writing strings in response to
		1570	the user pressing a key, to invoke the additional actions requested by
		1571	the user for that case (C<tt_write> doesn't do that).
		1572
		1573	The typical use case would be inside C<on_action> hooks.
		1574
		1575	=item $term->tt_paste ($octets)
		1576
		1577	Write the octets given in C<$octets> to the tty as a paste, converting NL to
		1578	CR and bracketing the data with control sequences if bracketed paste mode
		1579	is set.
		1580
		1581	=item $old_events = $term->pty_ev_events ([$new_events])
		1582
		1583	Replaces the event mask of the pty watcher by the given event mask. Can
		1584	be used to suppress input and output handling to the pty/tty. See the
		1585	description of C<< urxvt::timer->events >>. Make sure to always restore
		1586	the previous value.
		1587
		1588	=item $fd = $term->pty_fd
		1589
		1590	Returns the master file descriptor for the pty in use, or C<-1> if no pty
		1591	is used.
		1592
		1593	=item $windowid = $term->parent
		1594
		1595	Return the window id of the toplevel window.
		1596
		1597	=item $windowid = $term->vt
		1598
		1599	Return the window id of the terminal window.
		1600
		1601	=item $term->vt_emask_add ($x_event_mask)
		1602
		1603	Adds the specified events to the vt event mask. Useful e.g. when you want
		1604	to receive pointer events all the times:
		1605
		1606	$term->vt_emask_add (urxvt::PointerMotionMask);
		1607
		1608	=item $term->set_urgency ($set)
		1609
		1610	Enable/disable the urgency hint on the toplevel window.
		1611
		1612	=item $term->focus_in
		1613
		1614	=item $term->focus_out
		1615
		1616	=item $term->key_press ($state, $keycode[, $time])
		1617
		1618	=item $term->key_release ($state, $keycode[, $time])
		1619
		1620	Deliver various fake events to to terminal.
		1621
		1622	=item $window_width = $term->width
		1623
		1624	=item $window_height = $term->height
		1625
		1626	=item $font_width = $term->fwidth
		1627
		1628	=item $font_height = $term->fheight
		1629
		1630	=item $font_ascent = $term->fbase
		1631
570	=item $nrow = $term->nrow	1632	=item $terminal_rows = $term->nrow
571		1633
572	=item $ncol = $term->ncol	1634	=item $terminal_columns = $term->ncol
573		1635
574	Return the number of rows/columns of the terminal window (i.e. as	1636	=item $has_focus = $term->focus
575	specified by C<-geometry>, excluding any scrollback).
576		1637
		1638	=item $is_mapped = $term->mapped
		1639
		1640	=item $max_scrollback = $term->saveLines
		1641
		1642	=item $nrow_plus_saveLines = $term->total_rows
		1643
		1644	=item $topmost_scrollback_row = $term->top_row
		1645
		1646	Return various integers describing terminal characteristics.
		1647
		1648	=item $x_display = $term->display_id
		1649
		1650	Return the DISPLAY used by rxvt-unicode.
		1651
		1652	=item $lc_ctype = $term->locale
		1653
		1654	Returns the LC_CTYPE category string used by this rxvt-unicode.
		1655
577	=item $nsaved = $term->nsaved	1656	=item $env = $term->env
578		1657
579	Returns the number of lines in the scrollback buffer.	1658	Returns a copy of the environment in effect for the terminal as a hashref
		1659	similar to C<\%ENV>.
		1660
		1661	=item @envv = $term->envv
		1662
		1663	Returns the environment as array of strings of the form C<VAR=VALUE>.
		1664
		1665	=item @argv = $term->argv
		1666
		1667	Return the argument vector as this terminal, similar to @ARGV, but
		1668	includes the program name as first element.
		1669
		1670	=cut
		1671
		1672	sub env {
		1673	+{ map /^([^=]+)(?:=(.*))?$/s && ($1 => $2), $_[0]->envv }
		1674	}
		1675
		1676	=item $modifiermask = $term->ModLevel3Mask
		1677
		1678	=item $modifiermask = $term->ModMetaMask
		1679
		1680	=item $modifiermask = $term->ModNumLockMask
		1681
		1682	Return the modifier masks corresponding to the "ISO Level 3 Shift" (often
		1683	AltGr), the meta key (often Alt) and the num lock key, if applicable.
		1684
		1685	=item $screen = $term->current_screen
		1686
		1687	Returns the currently displayed screen (0 primary, 1 secondary).
		1688
		1689	=item $cursor_is_hidden = $term->hidden_cursor
		1690
		1691	Returns whether the cursor is currently hidden or not.
580		1692
581	=item $view_start = $term->view_start ([$newvalue])	1693	=item $view_start = $term->view_start ([$newvalue])
582		1694
583	Returns the negative row number of the topmost line. Minimum value is	1695	Returns the row number of the topmost displayed line. Maximum value is
584	C<0>, which displays the normal terminal contents. Larger values scroll	1696	C<0>, which displays the normal terminal contents. Lower values scroll
585	this many lines into the scrollback buffer.	1697	this many lines into the scrollback buffer.
586		1698
587	=item $term->want_refresh	1699	=item $term->want_refresh
588		1700
589	Requests a screen refresh. At the next opportunity, rxvt-unicode will	1701	Requests a screen refresh. At the next opportunity, rxvt-unicode will
590	compare the on-screen display with its stored representation. If they	1702	compare the on-screen display with its stored representation. If they
591	differ, it redraws the differences.	1703	differ, it redraws the differences.
592		1704
593	Used after changing terminal contents to display them.	1705	Used after changing terminal contents to display them.
594		1706
		1707	=item $term->refresh_check
		1708
		1709	Checks if a refresh has been requested and, if so, schedules one.
		1710
595	=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])	1711	=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])
596		1712
597	Returns the text of the entire row with number C<$row_number>. Row C<0>	1713	Returns the text of the entire row with number C<$row_number>. Row C<< $term->top_row >>
598	is the topmost terminal line, row C<< $term->$ncol-1 >> is the bottommost	1714	is the topmost terminal line, row C<< $term->nrow-1 >> is the bottommost
599	terminal line. The scrollback buffer starts at line C<-1> and extends to
600	line C<< -$term->nsaved >>. Nothing will be returned if a nonexistent line	1715	terminal line. Nothing will be returned if a nonexistent line
601	is requested.	1716	is requested.
602		1717
603	If C<$new_text> is specified, it will replace characters in the current	1718	If C<$new_text> is specified, it will replace characters in the current
604	line, starting at column C<$start_col> (default C<0>), which is useful	1719	line, starting at column C<$start_col> (default C<0>), which is useful
605	to replace only parts of a line. The font index in the rendition will	1720	to replace only parts of a line. The font index in the rendition will
606	automatically be updated.	1721	automatically be updated.
607		1722
608	C<$text> is in a special encoding: tabs and wide characters that use more	1723	C<$text> is in a special encoding: tabs and wide characters that use more
609	than one cell when displayed are padded with urxvt::NOCHAR characters	1724	than one cell when displayed are padded with C<$urxvt::NOCHAR> (chr 65535)
610	(C<chr 65535>). Characters with combining characters and other characters	1725	characters. Characters with combining characters and other characters that
611	that do not fit into the normal tetx encoding will be replaced with	1726	do not fit into the normal text encoding will be replaced with characters
612	characters in the private use area.	1727	in the private use area.
613		1728
614	You have to obey this encoding when changing text. The advantage is	1729	You have to obey this encoding when changing text. The advantage is
615	that C<substr> and similar functions work on screen cells and not on	1730	that C<substr> and similar functions work on screen cells and not on
616	characters.	1731	characters.
617		1732
…		…
647	about the logical line that row C<$row_number> is part of. It supports the	1762	about the logical line that row C<$row_number> is part of. It supports the
648	following methods:	1763	following methods:
649		1764
650	=over 4	1765	=over 4
651		1766
652	=item $text = $line->t	1767	=item $text = $line->t ([$new_text])
653		1768
654	Returns the full text of the line, similar to C<ROW_t>	1769	Returns or replaces the full text of the line, similar to C<ROW_t>
655		1770
656	=item $rend = $line->r	1771	=item $rend = $line->r ([$new_rend])
657		1772
658	Returns the full rendition array of the line, similar to C<ROW_r>	1773	Returns or replaces the full rendition array of the line, similar to C<ROW_r>
659		1774
660	=item $length = $line->l	1775	=item $length = $line->l
661		1776
662	Returns the length of the line in cells, similar to C<ROW_l>.	1777	Returns the length of the line in cells, similar to C<ROW_l>.
663		1778
…		…
668	Return the row number of the first/last row of the line, respectively.	1783	Return the row number of the first/last row of the line, respectively.
669		1784
670	=item $offset = $line->offset_of ($row, $col)	1785	=item $offset = $line->offset_of ($row, $col)
671		1786
672	Returns the character offset of the given row|col pair within the logical	1787	Returns the character offset of the given row|col pair within the logical
673	line.	1788	line. Works for rows outside the line, too, and returns corresponding
		1789	offsets outside the string.
674		1790
675	=item ($row, $col) = $line->coord_of ($offset)	1791	=item ($row, $col) = $line->coord_of ($offset)
676		1792
677	Translates a string offset into terminal coordinates again.	1793	Translates a string offset into terminal coordinates again.
678		1794
679	=back	1795	=back
680		1796
681	=cut	1797	=cut
682		1798
683	sub urxvt::term::line {	1799	sub line {
684	my ($self, $row) = @_;	1800	my ($self, $row) = @_;
685		1801
686	my $maxrow = $self->nrow - 1;	1802	my $maxrow = $self->nrow - 1;
687		1803
688	my ($beg, $end) = ($row, $row);	1804	my ($beg, $end) = ($row, $row);
…		…
692		1808
693	bless {	1809	bless {
694	term => $self,	1810	term => $self,
695	beg => $beg,	1811	beg => $beg,
696	end => $end,	1812	end => $end,
		1813	ncol => $self->ncol,
697	len => ($end - $beg) * $self->ncol + $self->ROW_l ($end),	1814	len => ($end - $beg) * $self->ncol + $self->ROW_l ($end),
698	}, urxvt::line::	1815	}, urxvt::line::
699	}	1816	}
700		1817
701	sub urxvt::line::t {	1818	sub urxvt::line::t {
702	my ($self) = @_;	1819	my ($self) = @_;
703		1820
		1821	if (@_ > 1) {
		1822	$self->{term}->ROW_t ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		1823	for $self->{beg} .. $self->{end};
		1824	}
		1825
		1826	defined wantarray &&
704	substr +(join "", map $self->{term}->ROW_t ($_), $self->{beg} .. $self->{end}),	1827	substr +(join "", map $self->{term}->ROW_t ($_), $self->{beg} .. $self->{end}),
705	0, $self->{len}	1828	0, $self->{len}
706	}	1829	}
707		1830
708	sub urxvt::line::r {	1831	sub urxvt::line::r {
709	my ($self) = @_;	1832	my ($self) = @_;
710		1833
		1834	if (@_ > 1) {
		1835	$self->{term}->ROW_r ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		1836	for $self->{beg} .. $self->{end};
		1837	}
		1838
		1839	if (defined wantarray) {
711	my $rend = [	1840	my $rend = [
712	map @{ $self->{term}->ROW_r ($_) }, $self->{beg} .. $self->{end}	1841	map @{ $self->{term}->ROW_r ($_) }, $self->{beg} .. $self->{end}
713	];	1842	];
714	$#$rend = $self->{len} - 1;	1843	$#$rend = $self->{len} - 1;
715	$rend	1844	return $rend;
		1845	}
		1846
		1847	()
716	}	1848	}
717		1849
718	sub urxvt::line::beg { $_[0]{beg} }	1850	sub urxvt::line::beg { $_[0]{beg} }
719	sub urxvt::line::end { $_[0]{end} }	1851	sub urxvt::line::end { $_[0]{end} }
720	sub urxvt::line::l { $_[0]{len} }	1852	sub urxvt::line::l { $_[0]{len} }
721		1853
722	sub urxvt::line::offset_of {	1854	sub urxvt::line::offset_of {
723	my ($self, $row, $col) = @_;	1855	my ($self, $row, $col) = @_;
724		1856
725	($row - $self->{beg}) * $self->{term}->ncol + $col	1857	($row - $self->{beg}) * $self->{ncol} + $col
726	}	1858	}
727		1859
728	sub urxvt::line::coord_of {	1860	sub urxvt::line::coord_of {
729	my ($self, $offset) = @_;	1861	my ($self, $offset) = @_;
730		1862
731	use integer;	1863	use integer;
732		1864
733	(	1865	(
734	$offset / $self->{term}->ncol + $self->{beg},	1866	$offset / $self->{ncol} + $self->{beg},
735	$offset % $self->{term}->ncol	1867	$offset % $self->{ncol}
736	)	1868	)
737	}	1869	}
738		1870
739	=item ($row, $col) = $line->coord_of ($offset)
740	=item $text = $term->special_encode $string	1871	=item $text = $term->special_encode $string
741		1872
742	Converts a perl string into the special encoding used by rxvt-unicode,	1873	Converts a perl string into the special encoding used by rxvt-unicode,
743	where one character corresponds to one screen cell. See	1874	where one character corresponds to one screen cell. See
744	C<< $term->ROW_t >> for details.	1875	C<< $term->ROW_t >> for details.
745		1876
746	=item $string = $term->special_decode $text	1877	=item $string = $term->special_decode $text
747		1878
748	Converts rxvt-unicodes text reprsentation into a perl string. See	1879	Converts rxvt-unicodes text representation into a perl string. See
749	C<< $term->ROW_t >> for details.	1880	C<< $term->ROW_t >> for details.
750		1881
		1882	=item $success = $term->grab_button ($button, $modifiermask[, $window = $term->vt])
		1883
		1884	=item $term->ungrab_button ($button, $modifiermask[, $window = $term->vt])
		1885
		1886	Register/unregister a synchronous button grab. See the XGrabButton
		1887	manpage.
		1888
		1889	=item $success = $term->grab ($eventtime[, $sync])
		1890
		1891	Calls XGrabPointer and XGrabKeyboard in asynchronous (default) or
		1892	synchronous (C<$sync> is true). Also remembers the grab timestamp.
		1893
		1894	=item $term->allow_events_async
		1895
		1896	Calls XAllowEvents with AsyncBoth for the most recent grab.
		1897
		1898	=item $term->allow_events_sync
		1899
		1900	Calls XAllowEvents with SyncBoth for the most recent grab.
		1901
		1902	=item $term->allow_events_replay
		1903
		1904	Calls XAllowEvents with both ReplayPointer and ReplayKeyboard for the most
		1905	recent grab.
		1906
		1907	=item $term->ungrab
		1908
		1909	Calls XUngrabPointer and XUngrabKeyboard for the most recent grab. Is called automatically on
		1910	evaluation errors, as it is better to lose the grab in the error case as
		1911	the session.
		1912
		1913	=item $atom = $term->XInternAtom ($atom_name[, $only_if_exists])
		1914
		1915	=item $atom_name = $term->XGetAtomName ($atom)
		1916
		1917	=item @atoms = $term->XListProperties ($window)
		1918
		1919	=item ($type,$format,$octets) = $term->XGetWindowProperty ($window, $property)
		1920
		1921	=item $term->XChangeProperty ($window, $property, $type, $format, $octets)
		1922
		1923	=item $term->XDeleteProperty ($window, $property)
		1924
		1925	=item $window = $term->DefaultRootWindow
		1926
		1927	=item $term->XReparentWindow ($window, $parent, [$x, $y])
		1928
		1929	=item $term->XMapWindow ($window)
		1930
		1931	=item $term->XUnmapWindow ($window)
		1932
		1933	=item $term->XMoveResizeWindow ($window, $x, $y, $width, $height)
		1934
		1935	=item ($x, $y, $child_window) = $term->XTranslateCoordinates ($src, $dst, $x, $y)
		1936
		1937	=item $term->XChangeInput ($window, $add_events[, $del_events])
		1938
		1939	=item $keysym = $term->XStringToKeysym ($string)
		1940
		1941	=item $string = $term->XKeysymToString ($keysym)
		1942
		1943	Various X or X-related functions. The C<$term> object only serves as
		1944	the source of the display, otherwise those functions map more-or-less
		1945	directly onto the X functions of the same name.
		1946
751	=back	1947	=back
		1948
		1949	=cut
		1950
		1951	package urxvt::popup;
		1952
		1953	=head2 The C<urxvt::popup> Class
		1954
		1955	=over 4
		1956
		1957	=cut
		1958
		1959	sub add_item {
		1960	my ($self, $item) = @_;
		1961
		1962	$item->{rend}{normal} = "\x1b[0;30;47m" unless exists $item->{rend}{normal};
		1963	$item->{rend}{hover} = "\x1b[0;30;46m" unless exists $item->{rend}{hover};
		1964	$item->{rend}{active} = "\x1b[m" unless exists $item->{rend}{active};
		1965
		1966	$item->{render} ||= sub { $_[0]{text} };
		1967
		1968	push @{ $self->{item} }, $item;
		1969	}
		1970
		1971	=item $popup->add_title ($title)
		1972
		1973	Adds a non-clickable title to the popup.
		1974
		1975	=cut
		1976
		1977	sub add_title {
		1978	my ($self, $title) = @_;
		1979
		1980	$self->add_item ({
		1981	rend => { normal => "\x1b[38;5;11;44m", hover => "\x1b[38;5;11;44m", active => "\x1b[38;5;11;44m" },
		1982	text => $title,
		1983	activate => sub { },
		1984	});
		1985	}
		1986
		1987	=item $popup->add_separator ([$sepchr])
		1988
		1989	Creates a separator, optionally using the character given as C<$sepchr>.
		1990
		1991	=cut
		1992
		1993	sub add_separator {
		1994	my ($self, $sep) = @_;
		1995
		1996	$sep ||= "=";
		1997
		1998	$self->add_item ({
		1999	rend => { normal => "\x1b[0;30;47m", hover => "\x1b[0;30;47m", active => "\x1b[0;30;47m" },
		2000	text => "",
		2001	render => sub { $sep x $self->{term}->ncol },
		2002	activate => sub { },
		2003	});
		2004	}
		2005
		2006	=item $popup->add_button ($text, $cb)
		2007
		2008	Adds a clickable button to the popup. C<$cb> is called whenever it is
		2009	selected.
		2010
		2011	=cut
		2012
		2013	sub add_button {
		2014	my ($self, $text, $cb) = @_;
		2015
		2016	$self->add_item ({ type => "button", text => $text, activate => $cb});
		2017	}
		2018
		2019	=item $popup->add_toggle ($text, $initial_value, $cb)
		2020
		2021	Adds a toggle/checkbox item to the popup. The callback gets called
		2022	whenever it gets toggled, with a boolean indicating its new value as its
		2023	first argument.
		2024
		2025	=cut
		2026
		2027	sub add_toggle {
		2028	my ($self, $text, $value, $cb) = @_;
		2029
		2030	my $item; $item = {
		2031	type => "button",
		2032	text => " $text",
		2033	value => $value,
		2034	render => sub { ($_[0]{value} ? "* " : " ") . $text },
		2035	activate => sub { $cb->($_[1]{value} = !$_[1]{value}); },
		2036	};
		2037
		2038	$self->add_item ($item);
		2039	}
		2040
		2041	=item $popup->show
		2042
		2043	Displays the popup (which is initially hidden).
		2044
		2045	=cut
		2046
		2047	sub show {
		2048	my ($self) = @_;
		2049
		2050	local $urxvt::popup::self = $self;
		2051
		2052	my $env = $self->{term}->env;
		2053	# we can't hope to reproduce the locale algorithm, so nuke LC_ALL and set LC_CTYPE.
		2054	delete $env->{LC_ALL};
		2055	$env->{LC_CTYPE} = $self->{term}->locale;
		2056
		2057	my $term = urxvt::term->new (
		2058	$env, "popup",
		2059	"--perl-lib" => "", "--perl-ext-common" => "",
		2060	"-pty-fd" => -1, "-sl" => 0,
		2061	"-b" => 1, "-bd" => "grey80", "-bl", "-override-redirect",
		2062	"--transient-for" => $self->{term}->parent,
		2063	"-display" => $self->{term}->display_id,
		2064	"-pe" => "urxvt-popup",
		2065	) or die "unable to create popup window\n";
		2066
		2067	unless (delete $term->{urxvt_popup_init_done}) {
		2068	$term->ungrab;
		2069	$term->destroy;
		2070	die "unable to initialise popup window\n";
		2071	}
		2072	}
		2073
		2074	sub DESTROY {
		2075	my ($self) = @_;
		2076
		2077	delete $self->{term}{_destroy}{$self};
		2078	$self->{term}->ungrab;
		2079	}
		2080
		2081	=back
		2082
		2083	=cut
		2084
		2085	package urxvt::watcher;
752		2086
753	=head2 The C<urxvt::timer> Class	2087	=head2 The C<urxvt::timer> Class
754		2088
755	This class implements timer watchers/events. Time is represented as a	2089	This class implements timer watchers/events. Time is represented as a
756	fractional number of seconds since the epoch. Example:	2090	fractional number of seconds since the epoch. Example:
…		…
760	->new	2094	->new
761	->interval (1)	2095	->interval (1)
762	->cb (sub {	2096	->cb (sub {
763	$term->{overlay}->set (0, 0,	2097	$term->{overlay}->set (0, 0,
764	sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);	2098	sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
765	});	2099	});
766		2100
767	=over 4	2101	=over 4
768		2102
769	=item $timer = new urxvt::timer	2103	=item $timer = new urxvt::timer
770		2104
…		…
773		2107
774	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })	2108	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })
775		2109
776	Set the callback to be called when the timer triggers.	2110	Set the callback to be called when the timer triggers.
777		2111
778	=item $tstamp = $timer->at
779
780	Return the time this watcher will fire next.
781
782	=item $timer = $timer->set ($tstamp)	2112	=item $timer = $timer->set ($tstamp[, $interval])
783		2113
784	Set the time the event is generated to $tstamp.	2114	Set the time the event is generated to $tstamp (and optionally specifies a
		2115	new $interval).
785		2116
786	=item $timer = $timer->interval ($interval)	2117	=item $timer = $timer->interval ($interval)
787		2118
788	Normally (and when C<$interval> is C<0>), the timer will automatically	2119	By default (and when C<$interval> is C<0>), the timer will automatically
789	stop after it has fired once. If C<$interval> is non-zero, then the timer	2120	stop after it has fired once. If C<$interval> is non-zero, then the timer
790	is automatically rescheduled at the given intervals.	2121	is automatically rescheduled at the given intervals.
791		2122
792	=item $timer = $timer->start	2123	=item $timer = $timer->start
793		2124
794	Start the timer.	2125	Start the timer.
795		2126
796	=item $timer = $timer->start ($tstamp)	2127	=item $timer = $timer->start ($tstamp[, $interval])
797		2128
798	Set the event trigger time to C<$tstamp> and start the timer.	2129	Set the event trigger time to C<$tstamp> and start the timer. Optionally
		2130	also replaces the interval.
		2131
		2132	=item $timer = $timer->after ($delay[, $interval])
		2133
		2134	Like C<start>, but sets the expiry timer to c<urxvt::NOW + $delay>.
799		2135
800	=item $timer = $timer->stop	2136	=item $timer = $timer->stop
801		2137
802	Stop the timer.	2138	Stop the timer.
803		2139
…		…
809		2145
810	$term->{socket} = ...	2146	$term->{socket} = ...
811	$term->{iow} = urxvt::iow	2147	$term->{iow} = urxvt::iow
812	->new	2148	->new
813	->fd (fileno $term->{socket})	2149	->fd (fileno $term->{socket})
814	->events (1) # wait for read data	2150	->events (urxvt::EV_READ)
815	->start	2151	->start
816	->cb (sub {	2152	->cb (sub {
817	my ($iow, $revents) = @_;	2153	my ($iow, $revents) = @_;
818	# $revents must be 1 here, no need to check	2154	# $revents must be 1 here, no need to check
819	sysread $term->{socket}, my $buf, 8192	2155	sysread $term->{socket}, my $buf, 8192
…		…
832	Set the callback to be called when io events are triggered. C<$reventmask>	2168	Set the callback to be called when io events are triggered. C<$reventmask>
833	is a bitset as described in the C<events> method.	2169	is a bitset as described in the C<events> method.
834		2170
835	=item $iow = $iow->fd ($fd)	2171	=item $iow = $iow->fd ($fd)
836		2172
837	Set the filedescriptor (not handle) to watch.	2173	Set the file descriptor (not handle) to watch.
838		2174
839	=item $iow = $iow->events ($eventmask)	2175	=item $iow = $iow->events ($eventmask)
840		2176
841	Set the event mask to watch. Bit #0 (value C<1>) enables watching for read	2177	Set the event mask to watch. The only allowed values are
842	data, Bit #1 (value C<2>) enables watching for write data.	2178	C<urxvt::EV_READ> and C<urxvt::EV_WRITE>, which might be ORed
		2179	together, or C<urxvt::EV_NONE>.
843		2180
844	=item $iow = $iow->start	2181	=item $iow = $iow->start
845		2182
846	Start watching for requested events on the given handle.	2183	Start watching for requested events on the given handle.
847		2184
848	=item $iow = $iow->stop	2185	=item $iow = $iow->stop
849		2186
850	Stop watching for events on the given filehandle.	2187	Stop watching for events on the given file handle.
		2188
		2189	=back
		2190
		2191	=head2 The C<urxvt::iw> Class
		2192
		2193	This class implements idle watchers, that get called automatically when
		2194	the process is idle. They should return as fast as possible, after doing
		2195	some useful work.
		2196
		2197	=over 4
		2198
		2199	=item $iw = new urxvt::iw
		2200
		2201	Create a new idle watcher object in stopped state.
		2202
		2203	=item $iw = $iw->cb (sub { my ($iw) = @_; ... })
		2204
		2205	Set the callback to be called when the watcher triggers.
		2206
		2207	=item $timer = $timer->start
		2208
		2209	Start the watcher.
		2210
		2211	=item $timer = $timer->stop
		2212
		2213	Stop the watcher.
		2214
		2215	=back
		2216
		2217	=head2 The C<urxvt::pw> Class
		2218
		2219	This class implements process watchers. They create an event whenever a
		2220	process exits, after which they stop automatically.
		2221
		2222	my $pid = fork;
		2223	...
		2224	$term->{pw} = urxvt::pw
		2225	->new
		2226	->start ($pid)
		2227	->cb (sub {
		2228	my ($pw, $exit_status) = @_;
		2229	...
		2230	});
		2231
		2232	=over 4
		2233
		2234	=item $pw = new urxvt::pw
		2235
		2236	Create a new process watcher in stopped state.
		2237
		2238	=item $pw = $pw->cb (sub { my ($pw, $exit_status) = @_; ... })
		2239
		2240	Set the callback to be called when the timer triggers.
		2241
		2242	=item $pw = $timer->start ($pid)
		2243
		2244	Tells the watcher to start watching for process C<$pid>.
		2245
		2246	=item $pw = $pw->stop
		2247
		2248	Stop the watcher.
851		2249
852	=back	2250	=back
853		2251
854	=head1 ENVIRONMENT	2252	=head1 ENVIRONMENT
855		2253
…		…
858	This variable controls the verbosity level of the perl extension. Higher	2256	This variable controls the verbosity level of the perl extension. Higher
859	numbers indicate more verbose output.	2257	numbers indicate more verbose output.
860		2258
861	=over 4	2259	=over 4
862		2260
863	=item =0 - only fatal messages	2261	=item == 0 - fatal messages
864		2262
865	=item =3 - script loading and management	2263	=item >= 3 - script loading and management
866		2264
867	=item =10 - all events received	2265	=item >=10 - all called hooks
		2266
		2267	=item >=11 - hook return values
868		2268
869	=back	2269	=back
870		2270
871	=head1 AUTHOR	2271	=head1 AUTHOR
872		2272
873	Marc Lehmann <pcg@goof.com>	2273	Marc Lehmann <schmorp@schmorp.de>
874	http://software.schmorp.de/pkg/rxvt-unicode	2274	http://software.schmorp.de/pkg/rxvt-unicode
875		2275
876	=cut	2276	=cut
877		2277
878	1	2278	1
		2279
		2280	# vim: sw=3:

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