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Revision 1.213 by root, Wed Jun 6 15:09:49 2012 UTC vs.
Revision 1.223 by root, Sat Jul 14 08:00:18 2012 UTC

20=head1 DESCRIPTION 20=head1 DESCRIPTION
21 21
22Every time a terminal object gets created, extension scripts specified via 22Every time a terminal object gets created, extension scripts specified via
23the C<perl> resource are loaded and associated with it. 23the C<perl> resource are loaded and associated with it.
24 24
25Scripts are compiled in a 'use strict' and 'use utf8' environment, and 25Scripts are compiled in a 'use strict "vars"' and 'use utf8' environment, and
26thus must be encoded as UTF-8. 26thus must be encoded as UTF-8.
27 27
28Each script will only ever be loaded once, even in @@RXVT_NAME@@d, where 28Each script will only ever be loaded once, even in @@RXVT_NAME@@d, where
29scripts will be shared (but not enabled) for all terminals. 29scripts will be shared (but not enabled) for all terminals.
30 30
31You can disable the embedded perl interpreter by setting both "perl-ext" 31You can disable the embedded perl interpreter by setting both "perl-ext"
32and "perl-ext-common" resources to the empty string. 32and "perl-ext-common" resources to the empty string.
33 33
34=head1 PREPACKAGED EXTENSIONS 34=head1 PREPACKAGED EXTENSIONS
35 35
36This section describes the extensions delivered with this release. You can 36A number of extensions are delivered with this release. You can find them
37find them in F<@@RXVT_LIBDIR@@/urxvt/perl/>. 37in F<@@RXVT_LIBDIR@@/urxvt/perl/>, and the documentation can be viewed
38using F<< man urxvt-<EXTENSIONNAME> >>.
38 39
39You can activate them like this: 40You can activate them like this:
40 41
41 @@RXVT_NAME@@ -pe <extensionname> 42 @@RXVT_NAME@@ -pe <extensionname>
42 43
43Or by adding them to the resource for extensions loaded by default: 44Or by adding them to the resource for extensions loaded by default:
44 45
45 URxvt.perl-ext-common: default,selection-autotransform 46 URxvt.perl-ext-common: default,selection-autotransform
46 47
47=over 4 48Extensions that add command line parameters or resources on their own are
48 49loaded automatically when used.
49=item selection (enabled by default)
50
51(More) intelligent selection. This extension tries to be more intelligent
52when the user extends selections (double-click and further clicks). Right
53now, it tries to select words, urls and complete shell-quoted
54arguments, which is very convenient, too, if your F<ls> supports
55C<--quoting-style=shell>.
56
57A double-click usually selects the word under the cursor, further clicks
58will enlarge the selection.
59
60The selection works by trying to match a number of regexes and displaying
61them in increasing order of length. You can add your own regexes by
62specifying resources of the form:
63
64 URxvt.selection.pattern-0: perl-regex
65 URxvt.selection.pattern-1: perl-regex
66 ...
67
68The index number (0, 1...) must not have any holes, and each regex must
69contain at least one pair of capturing parentheses, which will be used for
70the match. For example, the following adds a regex that matches everything
71between two vertical bars:
72
73 URxvt.selection.pattern-0: \\|([^|]+)\\|
74
75Another example: Programs I use often output "absolute path: " at the
76beginning of a line when they process multiple files. The following
77pattern matches the filename (note, there is a single space at the very
78end):
79
80 URxvt.selection.pattern-0: ^(/[^:]+):\
81
82You can look at the source of the selection extension to see more
83interesting uses, such as parsing a line from beginning to end.
84
85This extension also offers following bindable keyboard commands:
86
87=over 4
88
89=item rot13
90
91Rot-13 the selection when activated. Used via keyboard trigger:
92
93 URxvt.keysym.C-M-r: perl:selection:rot13
94
95=back
96
97=item option-popup (enabled by default)
98
99Binds a popup menu to Ctrl-Button2 that lets you toggle (some) options at
100runtime.
101
102Other extensions can extend this popup menu by pushing a code reference
103onto C<@{ $term->{option_popup_hook} }>, which gets called whenever the
104popup is being displayed.
105
106Its sole argument is the popup menu, which can be modified. It should
107either return nothing or a string, the initial boolean value and a code
108reference. The string will be used as button text and the code reference
109will be called when the toggle changes, with the new boolean value as
110first argument.
111
112The following will add an entry C<myoption> that changes
113C<< $self->{myoption} >>:
114
115 push @{ $self->{term}{option_popup_hook} }, sub {
116 ("my option" => $myoption, sub { $self->{myoption} = $_[0] })
117 };
118
119=item selection-popup (enabled by default)
120
121Binds a popup menu to Ctrl-Button3 that lets you convert the selection
122text into various other formats/action (such as uri unescaping, perl
123evaluation, web-browser starting etc.), depending on content.
124
125Other extensions can extend this popup menu by pushing a code reference
126onto C<@{ $term->{selection_popup_hook} }>, which gets called whenever the
127popup is being displayed.
128
129Its sole argument is the popup menu, which can be modified. The selection
130is in C<$_>, which can be used to decide whether to add something or not.
131It should either return nothing or a string and a code reference. The
132string will be used as button text and the code reference will be called
133when the button gets activated and should transform C<$_>.
134
135The following will add an entry C<a to b> that transforms all C<a>s in
136the selection to C<b>s, but only if the selection currently contains any
137C<a>s:
138
139 push @{ $self->{term}{selection_popup_hook} }, sub {
140 /a/ ? ("a to b" => sub { s/a/b/g }
141 : ()
142 };
143
144=item searchable-scrollback<hotkey> (enabled by default)
145
146Adds regex search functionality to the scrollback buffer, triggered
147by a hotkey (default: C<M-s>). While in search mode, normal terminal
148input/output is suspended and a regex is displayed at the bottom of the
149screen.
150
151Inputting characters appends them to the regex and continues incremental
152search. C<BackSpace> removes a character from the regex, C<Up> and C<Down>
153search upwards/downwards in the scrollback buffer, C<End> jumps to the
154bottom. C<Escape> leaves search mode and returns to the point where search
155was started, while C<Enter> or C<Return> stay at the current position and
156additionally stores the first match in the current line into the primary
157selection if the C<Shift> modifier is active.
158
159The regex defaults to "(?i)", resulting in a case-insensitive search. To
160get a case-sensitive search you can delete this prefix using C<BackSpace>
161or simply use an uppercase character which removes the "(?i)" prefix.
162
163See L<perlre> for more info about perl regular expression syntax.
164
165=item readline (enabled by default)
166
167A support package that tries to make editing with readline easier. At
168the moment, it reacts to clicking shift-left mouse button by trying to
169move the text cursor to this position. It does so by generating as many
170cursor-left or cursor-right keypresses as required (this only works
171for programs that correctly support wide characters).
172
173To avoid too many false positives, this is only done when:
174
175=over 4
176
177=item - the tty is in ICANON state.
178
179=item - the text cursor is visible.
180
181=item - the primary screen is currently being displayed.
182
183=item - the mouse is on the same (multi-row-) line as the text cursor.
184
185=back
186
187The normal selection mechanism isn't disabled, so quick successive clicks
188might interfere with selection creation in harmless ways.
189
190=item selection-autotransform
191
192This selection allows you to do automatic transforms on a selection
193whenever a selection is made.
194
195It works by specifying perl snippets (most useful is a single C<s///>
196operator) that modify C<$_> as resources:
197
198 URxvt.selection-autotransform.0: transform
199 URxvt.selection-autotransform.1: transform
200 ...
201
202For example, the following will transform selections of the form
203C<filename:number>, often seen in compiler messages, into C<vi +$filename
204$word>:
205
206 URxvt.selection-autotransform.0: s/^([^:[:space:]]+):(\\d+):?$/vi +$2 \\Q$1\\E\\x0d/
207
208And this example matches the same,but replaces it with vi-commands you can
209paste directly into your (vi :) editor:
210
211 URxvt.selection-autotransform.0: s/^([^:[:space:]]+(\\d+):?$/:e \\Q$1\\E\\x0d:$2\\x0d/
212
213Of course, this can be modified to suit your needs and your editor :)
214
215To expand the example above to typical perl error messages ("XXX at
216FILENAME line YYY."), you need a slightly more elaborate solution:
217
218 URxvt.selection.pattern-0: ( at .*? line \\d+[,.])
219 URxvt.selection-autotransform.0: s/^ at (.*?) line (\\d+)[,.]$/:e \\Q$1\E\\x0d:$2\\x0d/
220
221The first line tells the selection code to treat the unchanging part of
222every error message as a selection pattern, and the second line transforms
223the message into vi commands to load the file.
224
225=item tabbed
226
227This transforms the terminal into a tabbar with additional terminals, that
228is, it implements what is commonly referred to as "tabbed terminal". The topmost line
229displays a "[NEW]" button, which, when clicked, will add a new tab, followed by one
230button per tab.
231
232Clicking a button will activate that tab. Pressing B<Shift-Left> and
233B<Shift-Right> will switch to the tab left or right of the current one,
234while B<Shift-Down> creates a new tab.
235
236The tabbar itself can be configured similarly to a normal terminal, but
237with a resource class of C<URxvt.tabbed>. In addition, it supports the
238following four resources (shown with defaults):
239
240 URxvt.tabbed.tabbar-fg: <colour-index, default 3>
241 URxvt.tabbed.tabbar-bg: <colour-index, default 0>
242 URxvt.tabbed.tab-fg: <colour-index, default 0>
243 URxvt.tabbed.tab-bg: <colour-index, default 1>
244
245See I<COLOR AND GRAPHICS> in the @@RXVT_NAME@@(1) manpage for valid
246indices.
247
248=item matcher
249
250Uses per-line display filtering (C<on_line_update>) to underline text
251matching a certain pattern and make it clickable. When clicked with the
252mouse button specified in the C<matcher.button> resource (default 2, or
253middle), the program specified in the C<matcher.launcher> resource
254(default, the C<urlLauncher> resource, C<sensible-browser>) will be started
255with the matched text as first argument. The default configuration is
256suitable for matching URLs and launching a web browser, like the
257former "mark-urls" extension.
258
259The default pattern to match URLs can be overridden with the
260C<matcher.pattern.0> resource, and additional patterns can be specified
261with numbered patterns, in a manner similar to the "selection" extension.
262The launcher can also be overridden on a per-pattern basis.
263
264It is possible to activate the most recently seen match or a list of matches
265from the keyboard. Simply bind a keysym to "perl:matcher:last" or
266"perl:matcher:list" as seen in the example below.
267
268Example configuration:
269
270 URxvt.perl-ext: default,matcher
271 URxvt.urlLauncher: sensible-browser
272 URxvt.keysym.C-Delete: perl:matcher:last
273 URxvt.keysym.M-Delete: perl:matcher:list
274 URxvt.matcher.button: 1
275 URxvt.matcher.pattern.1: \\bwww\\.[\\w-]+\\.[\\w./?&@#-]*[\\w/-]
276 URxvt.matcher.pattern.2: \\B(/\\S+?):(\\d+)(?=:|$)
277 URxvt.matcher.launcher.2: gvim +$2 $1
278
279=item xim-onthespot
280
281This (experimental) perl extension implements OnTheSpot editing. It does
282not work perfectly, and some input methods don't seem to work well with
283OnTheSpot editing in general, but it seems to work at least for SCIM and
284kinput2.
285
286You enable it by specifying this extension and a preedit style of
287C<OnTheSpot>, i.e.:
288
289 @@RXVT_NAME@@ -pt OnTheSpot -pe xim-onthespot
290
291=item kuake<hotkey>
292
293A very primitive quake-console-like extension. It was inspired by a
294description of how the programs C<kuake> and C<yakuake> work: Whenever the
295user presses a global accelerator key (by default C<F10>), the terminal
296will show or hide itself. Another press of the accelerator key will hide
297or show it again.
298
299Initially, the window will not be shown when using this extension.
300
301This is useful if you need a single terminal that is not using any desktop
302space most of the time but is quickly available at the press of a key.
303
304The accelerator key is grabbed regardless of any modifiers, so this
305extension will actually grab a physical key just for this function.
306
307If you want a quake-like animation, tell your window manager to do so
308(fvwm can do it).
309
310=item overlay-osc
311
312This extension implements some OSC commands to display timed popups on the
313screen - useful for status displays from within scripts. You have to read
314the sources for more info.
315
316=item block-graphics-to-ascii
317
318A not very useful example of filtering all text output to the terminal
319by replacing all line-drawing characters (U+2500 .. U+259F) by a
320similar-looking ascii character.
321
322=item digital-clock
323
324Displays a digital clock using the built-in overlay.
325
326=item remote-clipboard
327
328Somewhat of a misnomer, this extension adds two menu entries to the
329selection popup that allows one to run external commands to store the
330selection somewhere and fetch it again.
331
332We use it to implement a "distributed selection mechanism", which just
333means that one command uploads the file to a remote server, and another
334reads it.
335
336The commands can be set using the C<URxvt.remote-selection.store> and
337C<URxvt.remote-selection.fetch> resources. The first should read the
338selection to store from STDIN (always in UTF-8), the second should provide
339the selection data on STDOUT (also in UTF-8).
340
341The defaults (which are likely useless to you) use rsh and cat:
342
343 URxvt.remote-selection.store: rsh ruth 'cat >/tmp/distributed-selection'
344 URxvt.remote-selection.fetch: rsh ruth 'cat /tmp/distributed-selection'
345
346=item selection-pastebin
347
348This is a little rarely useful extension that uploads the selection as
349textfile to a remote site (or does other things). (The implementation is
350not currently secure for use in a multiuser environment as it writes to
351F</tmp> directly.).
352
353It listens to the C<selection-pastebin:remote-pastebin> keyboard command,
354i.e.
355
356 URxvt.keysym.C-M-e: perl:selection-pastebin:remote-pastebin
357
358Pressing this combination runs a command with C<%> replaced by the name of
359the textfile. This command can be set via a resource:
360
361 URxvt.selection-pastebin.cmd: rsync -apP % ruth:/var/www/www.ta-sa.org/files/txt/.
362
363And the default is likely not useful to anybody but the few people around
364here :)
365
366The name of the textfile is the hex encoded md5 sum of the selection, so
367the same content should lead to the same filename.
368
369After a successful upload the selection will be replaced by the text given
370in the C<selection-pastebin-url> resource (again, the % is the placeholder
371for the filename):
372
373 URxvt.selection-pastebin.url: http://www.ta-sa.org/files/txt/%
374
375I<Note to xrdb users:> xrdb uses the C preprocessor, which might interpret
376the double C</> characters as comment start. Use C<\057\057> instead,
377which works regardless of whether xrdb is used to parse the resource file
378or not.
379
380=item macosx-clipboard and macosx-clipboard-native
381
382These two modules implement an extended clipboard for Mac OS X. They are
383used like this:
384
385 URxvt.perl-ext-common: default,macosx-clipboard
386 URxvt.keysym.M-c: perl:macosx-clipboard:copy
387 URxvt.keysym.M-v: perl:macosx-clipboard:paste
388
389The difference between them is that the native variant requires a
390perl from apple's devkit or so, and C<macosx-clipboard> requires the
391C<Mac::Pasteboard> module, works with other perls, has fewer bugs, is
392simpler etc. etc.
393
394=item example-refresh-hooks
395
396Displays a very simple digital clock in the upper right corner of the
397window. Illustrates overwriting the refresh callbacks to create your own
398overlays or changes.
399
400=item confirm-paste
401
402Displays a confirmation dialog when a paste containing at least a full
403line is detected.
404
405=item bell-command
406
407Runs the command specified by the C<URxvt.bell-command> resource when
408a bell event occurs. For example, the following pops up a notification
409bubble with the text "Beep, Beep" using notify-send:
410
411 URxvt.bell-command: notify-send "Beep, Beep"
412
413=back
414 50
415=head1 API DOCUMENTATION 51=head1 API DOCUMENTATION
416 52
417=head2 General API Considerations 53=head2 General API Considerations
418 54
467internal use. 103internal use.
468 104
469Although it isn't a C<urxvt::term> object, you can call all methods of the 105Although it isn't a C<urxvt::term> object, you can call all methods of the
470C<urxvt::term> class on this object. 106C<urxvt::term> class on this object.
471 107
472It has the following methods and data members: 108Additional methods only supported for extension objects are described in
473 109the C<urxvt::extension> section below.
474=over 4
475
476=item $urxvt_term = $self->{term}
477
478Returns the C<urxvt::term> object associated with this instance of the
479extension. This member I<must not> be changed in any way.
480
481=item $self->enable ($hook_name => $cb, [$hook_name => $cb..])
482
483Dynamically enable the given hooks (named without the C<on_> prefix) for
484this extension, replacing any previous hook. This is useful when you want
485to overwrite time-critical hooks only temporarily.
486
487=item $self->disable ($hook_name[, $hook_name..])
488
489Dynamically disable the given hooks.
490
491=back
492 110
493=head2 Hooks 111=head2 Hooks
494 112
495The following subroutines can be declared in extension files, and will be 113The following subroutines can be declared in extension files, and will be
496called whenever the relevant event happens. 114called whenever the relevant event happens.
755=cut 373=cut
756 374
757package urxvt; 375package urxvt;
758 376
759use utf8; 377use utf8;
760use strict; 378use strict 'vars';
761use Carp (); 379use Carp ();
762use Scalar::Util (); 380use Scalar::Util ();
763use List::Util (); 381use List::Util ();
764 382
765our $VERSION = 1; 383our $VERSION = 1;
946no warnings 'utf8'; 564no warnings 'utf8';
947 565
948sub parse_resource { 566sub parse_resource {
949 my ($term, $name, $isarg, $longopt, $flag, $value) = @_; 567 my ($term, $name, $isarg, $longopt, $flag, $value) = @_;
950 568
569 $name =~ y/-/./ if $isarg;
570
951 $term->scan_meta; 571 $term->scan_meta;
952 572
953 my $r = $term->{meta}{resource}; 573 my $r = $term->{meta}{resource};
574 keys %$r; # reste iterator
954 while (my ($pattern, $v) = each %$r) { 575 while (my ($pattern, $v) = each %$r) {
955 $name =~ y/-/./ if $isarg;
956
957 if ( 576 if (
958 $pattern =~ /\.$/ 577 $pattern =~ /\.$/
959 ? $pattern eq substr $name, 0, length $pattern 578 ? $pattern eq substr $name, 0, length $pattern
960 : $pattern eq $name 579 : $pattern eq $name
961 ) { 580 ) {
962 $name = "$urxvt::RESCLASS.$name"; 581 $name = "$urxvt::RESCLASS.$name";
963 582
964 push @TERM_EXT, $v->[0]; 583 push @{ $term->{perl_ext_3} }, $v->[0];
965 584
966 if ($v->[1] eq "boolean") { 585 if ($v->[1] eq "boolean") {
967 $term->put_option_db ($name, $flag ? "true" : "false"); 586 $term->put_option_db ($name, $flag ? "true" : "false");
968 return 1; 587 return 1;
969 } else { 588 } else {
1023 $pkg =~ s/[^[:word:]]/_/g; 642 $pkg =~ s/[^[:word:]]/_/g;
1024 $pkg = "urxvt::ext::$pkg"; 643 $pkg = "urxvt::ext::$pkg";
1025 644
1026 verbose 3, "loading extension '$path' into package '$pkg'"; 645 verbose 3, "loading extension '$path' into package '$pkg'";
1027 646
647 (${"$pkg\::_NAME"} = $path) =~ s/^.*[\\\/]//; # hackish
648
1028 open my $fh, "<:raw", $path 649 open my $fh, "<:raw", $path
1029 or die "$path: $!"; 650 or die "$path: $!";
1030 651
1031 my $source = 652 my $source =
1032 "package $pkg; use strict; use utf8; no warnings 'utf8';\n" 653 "package $pkg; use strict 'vars'; use utf8; no warnings 'utf8';\n"
1033 . "#line 1 \"$path\"\n{\n" 654 . "#line 1 \"$path\"\n{\n"
1034 . (do { local $/; <$fh> }) 655 . (do { local $/; <$fh> })
1035 . "\n};\n1"; 656 . "\n};\n1";
1036 657
1037 eval $source 658 eval $source
1060 my @pkg = @TERM_EXT; 681 my @pkg = @TERM_EXT;
1061 @TERM_EXT = (); 682 @TERM_EXT = ();
1062 $TERM->register_package ($_) for @pkg; 683 $TERM->register_package ($_) for @pkg;
1063 } 684 }
1064 685
686 for (
687 @{ delete $TERM->{perl_ext_3} },
1065 for (grep $_, map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2) { 688 grep $_, map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2
689 ) {
1066 if ($_ eq "default") { 690 if ($_ eq "default") {
1067 $ext_arg{$_} ||= [] for qw(selection option-popup selection-popup searchable-scrollback readline); 691 $ext_arg{$_} ||= [] for qw(selection option-popup selection-popup searchable-scrollback readline);
1068 } elsif (/^-(.*)$/) { 692 } elsif (/^-(.*)$/) {
1069 delete $ext_arg{$1}; 693 delete $ext_arg{$1};
1070 } elsif (/^([^<]+)<(.*)>$/) { 694 } elsif (/^([^<]+)<(.*)>$/) {
1093 if (my $cb = $TERM->{_hook}[$htype]) { 717 if (my $cb = $TERM->{_hook}[$htype]) {
1094 verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")" 718 verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
1095 if $verbosity >= 10; 719 if $verbosity >= 10;
1096 720
1097 for my $pkg (keys %$cb) { 721 for my $pkg (keys %$cb) {
1098 my $retval_ = eval { $cb->{$pkg}->($TERM->{_pkg}{$pkg}, @_) }; 722 my $retval_ = eval { $cb->{$pkg}->($TERM->{_pkg}{$pkg} || $TERM, @_) };
1099 $retval ||= $retval_; 723 $retval ||= $retval_;
1100 724
1101 if ($@) { 725 if ($@) {
1102 $TERM->ungrab; # better to lose the grab than the session 726 $TERM->ungrab; # better to lose the grab than the session
1103 warn $@; 727 warn $@;
1146 } 770 }
1147 } 771 }
1148 ($mask, @color{qw(fg bg)}, \@failed) 772 ($mask, @color{qw(fg bg)}, \@failed)
1149} 773}
1150 774
1151# urxvt::term::extension
1152
1153package urxvt::term::extension; 775package urxvt::term::extension;
1154 776
1155sub enable { 777=head2 The C<urxvt::term::extension> class
1156 my ($self, %hook) = @_;
1157 my $pkg = $self->{_pkg};
1158 778
1159 while (my ($name, $cb) = each %hook) { 779Each extension attached to a terminal object is represented by
1160 my $htype = $HOOKTYPE{uc $name}; 780a C<urxvt::term::extension> object.
1161 defined $htype
1162 or Carp::croak "unsupported hook type '$name'";
1163 781
1164 $self->set_should_invoke ($htype, +1) 782You can use these objects, which are passed to all callbacks to store any
1165 unless exists $self->{term}{_hook}[$htype]{$pkg}; 783state related to the terminal and extension instance.
1166 784
1167 $self->{term}{_hook}[$htype]{$pkg} = $cb; 785The methods (And data members) documented below can be called on extension
1168 } 786objects, in addition to call methods documented for the <urxvt::term>
1169} 787class.
1170 788
1171sub disable { 789=over 4
1172 my ($self, @hook) = @_;
1173 my $pkg = $self->{_pkg};
1174 790
1175 for my $name (@hook) { 791=item $urxvt_term = $self->{term}
1176 my $htype = $HOOKTYPE{uc $name};
1177 defined $htype
1178 or Carp::croak "unsupported hook type '$name'";
1179 792
1180 $self->set_should_invoke ($htype, -1) 793Returns the C<urxvt::term> object associated with this instance of the
1181 if delete $self->{term}{_hook}[$htype]{$pkg}; 794extension. This member I<must not> be changed in any way.
1182 } 795
1183} 796=cut
1184 797
1185our $AUTOLOAD; 798our $AUTOLOAD;
1186 799
1187sub AUTOLOAD { 800sub AUTOLOAD {
1188 $AUTOLOAD =~ /:([^:]+)$/ 801 $AUTOLOAD =~ /:([^:]+)$/
1201 814
1202sub DESTROY { 815sub DESTROY {
1203 # nop 816 # nop
1204} 817}
1205 818
1206# urxvt::destroy_hook 819# urxvt::destroy_hook (basically a cheap Guard:: implementation)
1207 820
1208sub urxvt::destroy_hook::DESTROY { 821sub urxvt::destroy_hook::DESTROY {
1209 ${$_[0]}->(); 822 ${$_[0]}->();
1210} 823}
1211 824
1212sub urxvt::destroy_hook(&) { 825sub urxvt::destroy_hook(&) {
1213 bless \shift, urxvt::destroy_hook:: 826 bless \shift, urxvt::destroy_hook::
1214} 827}
828
829=item $self->enable ($hook_name => $cb[, $hook_name => $cb..])
830
831Dynamically enable the given hooks (named without the C<on_> prefix) for
832this extension, replacing any previous hook. This is useful when you want
833to overwrite time-critical hooks only temporarily.
834
835To install additional callbacks for the same hook, you can use the C<on>
836method of the C<urxvt::term> class.
837
838=item $self->disable ($hook_name[, $hook_name..])
839
840Dynamically disable the given hooks.
841
842=cut
843
844sub enable {
845 my ($self, %hook) = @_;
846 my $pkg = $self->{_pkg};
847
848 while (my ($name, $cb) = each %hook) {
849 my $htype = $HOOKTYPE{uc $name};
850 defined $htype
851 or Carp::croak "unsupported hook type '$name'";
852
853 $self->set_should_invoke ($htype, +1)
854 unless exists $self->{term}{_hook}[$htype]{$pkg};
855
856 $self->{term}{_hook}[$htype]{$pkg} = $cb;
857 }
858}
859
860sub disable {
861 my ($self, @hook) = @_;
862 my $pkg = $self->{_pkg};
863
864 for my $name (@hook) {
865 my $htype = $HOOKTYPE{uc $name};
866 defined $htype
867 or Carp::croak "unsupported hook type '$name'";
868
869 $self->set_should_invoke ($htype, -1)
870 if delete $self->{term}{_hook}[$htype]{$pkg};
871 }
872}
873
874=item $guard = $self->on ($hook_name => $cb[, $hook_name => $cb..])
875
876Similar to the C<enable> enable, but installs additional callbacks for
877the given hook(s) (that is, it doesn't replace existing callbacks), and
878returns a guard object. When the guard object is destroyed the callbacks
879are disabled again.
880
881=cut
882
883sub urxvt::extension::on_disable::DESTROY {
884 my $disable = shift;
885
886 my $term = delete $disable->{""};
887
888 while (my ($htype, $id) = each %$disable) {
889 warn "disable hook $htype,$id\n";#d#
890 delete $term->{_hook}[$htype]{$id};
891 $term->set_should_invoke ($htype, -1);
892 }
893}
894
895sub on {
896 my ($self, %hook) = @_;
897
898 my $term = $self->{term};
899
900 my %disable = ( "" => $term );
901
902 while (my ($name, $cb) = each %hook) {
903 my $htype = $HOOKTYPE{uc $name};
904 defined $htype
905 or Carp::croak "unsupported hook type '$name'";
906
907 $term->set_should_invoke ($htype, +1);
908 $term->{_hook}[$htype]{ $disable{$htype} = $cb+0 }
909 = sub { shift; $cb->($self, @_) }; # very ugly indeed
910 }
911
912 bless \%disable, "urxvt::extension::on_disable"
913}
914
915=item $self->x_resource ($pattern)
916
917=item $self->x_resource_boolean ($pattern)
918
919These methods support an additional C<%> prefix when called on an
920extension object - see the description of these methods in the
921C<urxvt::term> class for details.
922
923=cut
924
925sub x_resource {
926 my ($self, $name) = @_;
927 $name =~ s/^%(\.|$)/$_[0]{_name}$1/;
928 $self->{term}->x_resource ($name)
929}
930
931sub x_resource_boolean {
932 my ($self, $name) = @_;
933 $name =~ s/^%(\.|$)/$_[0]{_name}$1/;
934 $self->{term}->x_resource_boolean ($name)
935}
936
937=back
938
939=cut
1215 940
1216package urxvt::anyevent; 941package urxvt::anyevent;
1217 942
1218=head2 The C<urxvt::anyevent> Class 943=head2 The C<urxvt::anyevent> Class
1219 944
1315 urxvt::verbose 6, "register package $pkg to $self"; 1040 urxvt::verbose 6, "register package $pkg to $self";
1316 1041
1317 @{"$pkg\::ISA"} = urxvt::term::extension::; 1042 @{"$pkg\::ISA"} = urxvt::term::extension::;
1318 1043
1319 my $proxy = bless { 1044 my $proxy = bless {
1320 _pkg => $pkg, 1045 _pkg => $pkg,
1046 _name => ${"$pkg\::_NAME"}, # hackish
1321 argv => $argv, 1047 argv => $argv,
1322 }, $pkg; 1048 }, $pkg;
1323 Scalar::Util::weaken ($proxy->{term} = $self); 1049 Scalar::Util::weaken ($proxy->{term} = $self);
1324 1050
1325 $self->{_pkg}{$pkg} = $proxy; 1051 $self->{_pkg}{$pkg} = $proxy;
1326 1052
1360 or next; 1086 or next;
1361 1087
1362 while (<$fh>) { 1088 while (<$fh>) {
1363 if (/^#:META:X_RESOURCE:(.*)/) { 1089 if (/^#:META:X_RESOURCE:(.*)/) {
1364 my ($pattern, $type, $desc) = split /:/, $1; 1090 my ($pattern, $type, $desc) = split /:/, $1;
1365 $pattern =~ s/^%(?:\.|$)/$ext./g; # % in pattern == extension name 1091 $pattern =~ s/^%(\.|$)/$ext$1/g; # % in pattern == extension name
1366 if ($pattern =~ /[^a-zA-Z0-9\-\.]/) { 1092 if ($pattern =~ /[^a-zA-Z0-9\-\.]/) {
1367 warn "$dir/$ext: meta resource '$pattern' contains illegal characters (not alphanumeric nor . nor *)\n"; 1093 warn "$dir/$ext: meta resource '$pattern' contains illegal characters (not alphanumeric nor . nor *)\n";
1368 } else { 1094 } else {
1369 $meta{resource}{$pattern} = [$ext, $type, $desc]; 1095 $meta{resource}{$pattern} = [$ext, $type, $desc];
1370 } 1096 }
1468 1194
1469Here is a likely non-exhaustive list of resource names, not all of which 1195Here is a likely non-exhaustive list of resource names, not all of which
1470are supported in every build, please see the source file F</src/rsinc.h> 1196are supported in every build, please see the source file F</src/rsinc.h>
1471to see the actual list: 1197to see the actual list:
1472 1198
1473 answerbackstring backgroundPixmap backspace_key blendtype blurradius 1199 answerbackstring backgroundPixmap backspace_key blurradius
1474 boldFont boldItalicFont borderLess buffered chdir color cursorBlink 1200 boldFont boldItalicFont borderLess buffered chdir color cursorBlink
1475 cursorUnderline cutchars delete_key depth display_name embed ext_bwidth 1201 cursorUnderline cutchars delete_key depth display_name embed ext_bwidth
1476 fade font geometry hold iconName iconfile imFont imLocale inputMethod 1202 fade font geometry hold iconName iconfile imFont imLocale inputMethod
1477 insecure int_bwidth intensityStyles iso14755 iso14755_52 italicFont 1203 insecure int_bwidth intensityStyles iso14755 iso14755_52 italicFont
1478 jumpScroll letterSpace lineSpace loginShell mapAlert meta8 modifier 1204 jumpScroll letterSpace lineSpace loginShell mapAlert meta8 modifier
1498Returns the X-Resource for the given pattern, excluding the program or 1224Returns the X-Resource for the given pattern, excluding the program or
1499class name, i.e. C<< $term->x_resource ("boldFont") >> should return the 1225class name, i.e. C<< $term->x_resource ("boldFont") >> should return the
1500same value as used by this instance of rxvt-unicode. Returns C<undef> if no 1226same value as used by this instance of rxvt-unicode. Returns C<undef> if no
1501resource with that pattern exists. 1227resource with that pattern exists.
1502 1228
1229Extensions that define extra resource or command line arguments also need
1230to call this method to access their values.
1231
1232If the method is called on an extension object (basically, from an
1233extension), then the special prefix C<%.> will be replaced by the name of
1234the extension and a dot, and the lone string C<%> will be replaced by the
1235extension name itself. This makes it possible to code extensions so you
1236can rename them and get a new set of commandline switches and resources
1237without having to change the actual code.
1238
1503This method should only be called during the C<on_start> hook, as there is 1239This method should only be called during the C<on_start> hook, as there is
1504only one resource database per display, and later invocations might return 1240only one resource database per display, and later invocations might return
1505the wrong resources. 1241the wrong resources.
1506 1242
1507=item $value = $term->x_resource_boolean ($pattern) 1243=item $value = $term->x_resource_boolean ($pattern)

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