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Revision 1.230 by root, Sat Apr 26 20:51:12 2014 UTC vs.
Revision 1.247 by root, Fri Dec 26 19:19:30 2014 UTC

43 43
44Or by adding them to the resource for extensions loaded by default: 44Or by adding them to the resource for extensions loaded by default:
45 45
46 URxvt.perl-ext-common: default,selection-autotransform 46 URxvt.perl-ext-common: default,selection-autotransform
47 47
48Extensions that add command line parameters or resources on their own are 48Extensions may add additional resources and C<actions>, i.e., methods
49loaded automatically when used. 49which can be bound to a key and invoked by the user. An extension can
50define the resources it support and also default bindings for one or
51more actions it provides using so called META comments, described
52below. Similarly to builtin resources, extension resources can also be
53specified on the command line as long options (with C<.> replaced by
54C<->), in which case the corresponding extension is loaded
55automatically. For this to work the extension B<must> define META
56comments for its resources.
50 57
51=head1 API DOCUMENTATION 58=head1 API DOCUMENTATION
52 59
53=head2 General API Considerations 60=head2 General API Considerations
54 61
106C<urxvt::term> class on this object. 113C<urxvt::term> class on this object.
107 114
108Additional methods only supported for extension objects are described in 115Additional methods only supported for extension objects are described in
109the C<urxvt::extension> section below. 116the C<urxvt::extension> section below.
110 117
118=head2 META comments
119
120Rxvt-unicode recognizes special meta comments in extensions that define
121different types of metadata.
122
123Currently, it recxognises only one such comment:
124
125=over 4
126
127=item #:META:RESOURCE:name:type:desc
128
129The RESOURCE comment defines a resource used by the extension, where
130C<name> is the resource name, C<type> is the resource type, C<boolean>
131or C<string>, and C<desc> is the resource description.
132
133=back
134
111=head2 Hooks 135=head2 Hooks
112 136
113The following subroutines can be declared in extension files, and will be 137The following subroutines can be declared in extension files, and will be
114called whenever the relevant event happens. 138called whenever the relevant event happens.
115 139
281 305
282=item on_refresh_end $term 306=item on_refresh_end $term
283 307
284Called just after the screen gets redrawn. See C<on_refresh_begin>. 308Called just after the screen gets redrawn. See C<on_refresh_begin>.
285 309
310=item on_action $term, $string
311
312Called whenever an action is invoked for the corresponding extension
313(e.g. via a C<extension:string> builtin action bound to a key, see
314description of the B<keysym> resource in the urxvt(1) manpage). The
315event is simply the action string. Note that an action event is always
316associated to a single extension.
317
286=item on_user_command $term, $string *DEPRECATED* 318=item on_user_command $term, $string *DEPRECATED*
287 319
288Called whenever a user-configured event is being activated (e.g. via 320Called whenever a user-configured event is being activated (e.g. via
289a C<perl:string> action bound to a key, see description of the B<keysym> 321a C<perl:string> action bound to a key, see description of the B<keysym>
290resource in the urxvt(1) manpage). 322resource in the urxvt(1) manpage).
291 323
292The event is simply the action string. This interface is going away in 324The event is simply the action string. This interface is going away in
293preference to the C<< ->register_keysym_action >> method. 325preference to the C<on_action> hook.
294
295=item on_register_command $term, $keysym, $modifiermask, $string
296
297Called after parsing a keysym resource but before registering the
298associated binding. If this hook returns a true value the binding
299is not registered. It can be used to modify a binding by calling
300C<register_command>.
301 326
302=item on_resize_all_windows $term, $new_width, $new_height 327=item on_resize_all_windows $term, $new_width, $new_height
303 328
304Called just after the new window size has been calculated, but before 329Called just after the new window size has been calculated, but before
305windows are actually being resized or hints are being set. If this hook 330windows are actually being resized or hints are being set. If this hook
350manpage), with the additional members C<row> and C<col>, which are the 375manpage), with the additional members C<row> and C<col>, which are the
351(real, not screen-based) row and column under the mouse cursor. 376(real, not screen-based) row and column under the mouse cursor.
352 377
353C<on_key_press> additionally receives the string rxvt-unicode would 378C<on_key_press> additionally receives the string rxvt-unicode would
354output, if any, in locale-specific encoding. 379output, if any, in locale-specific encoding.
355
356subwindow.
357 380
358=item on_client_message $term, $event 381=item on_client_message $term, $event
359 382
360=item on_wm_protocols $term, $event 383=item on_wm_protocols $term, $event
361 384
564no warnings 'utf8'; 587no warnings 'utf8';
565 588
566sub parse_resource { 589sub parse_resource {
567 my ($term, $name, $isarg, $longopt, $flag, $value) = @_; 590 my ($term, $name, $isarg, $longopt, $flag, $value) = @_;
568 591
569 $name =~ y/-/./ if $isarg;
570
571 $term->scan_meta; 592 $term->scan_extensions;
572 593
573 my $r = $term->{meta}{resource}; 594 my $r = $term->{meta}{resource};
574 keys %$r; # reset iterator 595 keys %$r; # reset iterator
575 while (my ($pattern, $v) = each %$r) { 596 while (my ($k, $v) = each %$r) {
576 if ( 597 my $pattern = $k;
598 $pattern =~ y/./-/ if $isarg;
599 my $prefix = $name;
600 my $suffix;
577 $pattern =~ /\.$/ 601 if ($pattern =~ /\-$/) {
578 ? $pattern eq substr $name, 0, length $pattern 602 $prefix = substr $name, 0, length $pattern;
579 : $pattern eq $name 603 $suffix = substr $name, length $pattern;
580 ) { 604 }
605 if ($pattern eq $prefix) {
581 $name = "$urxvt::RESCLASS.$name"; 606 $name = "$urxvt::RESCLASS.$k$suffix";
582 607
583 push @{ $term->{perl_ext_3} }, $v->[0]; 608 push @{ $term->{perl_ext_3} }, $v->[0];
584 609
585 if ($v->[1] eq "boolean") { 610 if ($v->[1] eq "boolean") {
586 $term->put_option_db ($name, $flag ? "true" : "false"); 611 $term->put_option_db ($name, $flag ? "true" : "false");
596} 621}
597 622
598sub usage { 623sub usage {
599 my ($term, $usage_type) = @_; 624 my ($term, $usage_type) = @_;
600 625
601 $term->scan_meta; 626 $term->scan_extensions;
602 627
603 my $r = $term->{meta}{resource}; 628 my $r = $term->{meta}{resource};
604 629
605 for my $pattern (sort keys %$r) { 630 for my $pattern (sort keys %$r) {
606 my ($ext, $type, $desc) = @{ $r->{$pattern} }; 631 my ($ext, $type, $desc) = @{ $r->{$pattern} };
670 my $htype = shift; 695 my $htype = shift;
671 696
672 if ($htype == HOOK_INIT) { 697 if ($htype == HOOK_INIT) {
673 my @dirs = $TERM->perl_libdirs; 698 my @dirs = $TERM->perl_libdirs;
674 699
700 $TERM->scan_extensions;
701
675 my %ext_arg; 702 my %ext_arg;
676 703
677 { 704 {
678 my @init = @TERM_INIT; 705 my @init = @TERM_INIT;
679 @TERM_INIT = (); 706 @TERM_INIT = ();
682 @TERM_EXT = (); 709 @TERM_EXT = ();
683 $TERM->register_package ($_) for @pkg; 710 $TERM->register_package ($_) for @pkg;
684 } 711 }
685 712
686 for ( 713 for (
714 (grep $_, map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2),
687 @{ delete $TERM->{perl_ext_3} }, 715 @{ delete $TERM->{perl_ext_3} }
688 grep $_, map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2
689 ) { 716 ) {
690 if ($_ eq "default") { 717 if ($_ eq "default") {
718
719 $ext_arg{$_} = []
720 for
691 $ext_arg{$_} ||= [] for qw(selection option-popup selection-popup searchable-scrollback readline); 721 qw(selection option-popup selection-popup readline searchable-scrollback),
722 map $_->[0], values %{ $TERM->{meta}{binding} };
723
724 for ($TERM->_keysym_resources) {
725 next if /^(?:string|command|builtin|builtin-string|perl)/;
726 next unless /^([A-Za-z0-9_\-]+):/;
727
728 my $ext = $1;
729
730 $ext_arg{$ext} = [];
731 }
732
692 } elsif (/^-(.*)$/) { 733 } elsif (/^-(.*)$/) {
693 delete $ext_arg{$1}; 734 delete $ext_arg{$1};
735
694 } elsif (/^([^<]+)<(.*)>$/) { 736 } elsif (/^([^<]+)<(.*)>$/) {
695 push @{ $ext_arg{$1} }, $2; 737 push @{ $ext_arg{$1} }, $2;
738
696 } else { 739 } else {
697 $ext_arg{$_} ||= []; 740 $ext_arg{$_} ||= [];
741 }
742 }
743
744 # now register default key bindings
745 for my $ext (sort keys %ext_arg) {
746 while (my ($k, $v) = each %{ $TERM->{meta}{ext}{$ext}{binding} }) {
747 $TERM->bind_action ($k, "$v->[0]:$v->[1]");
698 } 748 }
699 } 749 }
700 750
701 for my $ext (sort keys %ext_arg) { 751 for my $ext (sort keys %ext_arg) {
702 my @files = grep -f $_, map "$_/$ext", @dirs; 752 my @files = grep -f $_, map "$_/$ext", @dirs;
716 766
717 if (my $cb = $TERM->{_hook}[$htype]) { 767 if (my $cb = $TERM->{_hook}[$htype]) {
718 verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")" 768 verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
719 if $verbosity >= 10; 769 if $verbosity >= 10;
720 770
721 for my $pkg ( 771 if ($htype == HOOK_ACTION) {
722 # this hook is only sent to the extension with the name 772 # this hook is only sent to the extension with the name
723 # matching the first arg 773 # matching the first arg
724 $htype == HOOK_KEYBOARD_DISPATCH 774 my $pkg = shift;
725 ? exists $cb->{"urxvt::ext::$_[0]"} ? "urxvt::ext::" . shift : return undef 775 $pkg =~ y/-/_/;
726 : keys %$cb 776 $pkg = "urxvt::ext::$pkg";
777
778 $cb = $cb->{$pkg}
779 or return undef; #TODO: maybe warn user?
780
781 $cb = { $pkg => $cb };
727 ) { 782 }
783
784 for my $pkg (keys %$cb) {
728 my $retval_ = eval { $cb->{$pkg}->($TERM->{_pkg}{$pkg} || $TERM, @_) }; 785 my $retval_ = eval { $cb->{$pkg}->($TERM->{_pkg}{$pkg} || $TERM, @_) };
729 $retval ||= $retval_; 786 $retval ||= $retval_;
730 787
731 if ($@) { 788 if ($@) {
732 $TERM->ungrab; # better to lose the grab than the session 789 $TERM->ungrab; # better to lose the grab than the session
918 } 975 }
919 976
920 bless \%disable, "urxvt::extension::on_disable" 977 bless \%disable, "urxvt::extension::on_disable"
921} 978}
922 979
980=item $self->bind_action ($hotkey, $action)
981
923=item $self->x_resource ($pattern) 982=item $self->x_resource ($pattern)
924 983
925=item $self->x_resource_boolean ($pattern) 984=item $self->x_resource_boolean ($pattern)
926 985
927These methods support an additional C<%> prefix when called on an 986These methods support an additional C<%> prefix for C<$action> or
928extension object - see the description of these methods in the 987C<$pattern> when called on an extension object, compared to the
988C<urxvt::term> methods of the same name - see the description of these
929C<urxvt::term> class for details. 989methods in the C<urxvt::term> class for details.
930 990
931=cut 991=cut
992
993sub bind_action {
994 my ($self, $hotkey, $action) = @_;
995 $action =~ s/^%:/$_[0]{_name}:/;
996 $self->{term}->bind_action ($hotkey, $action)
997}
932 998
933sub x_resource { 999sub x_resource {
934 my ($self, $name) = @_; 1000 my ($self, $name) = @_;
935 $name =~ s/^%(\.|$)/$_[0]{_name}$1/; 1001 $name =~ s/^%(\.|$)/$_[0]{_name}$1/;
936 $self->{term}->x_resource ($name) 1002 $self->{term}->x_resource ($name)
1071 $ENV{URXVT_PERL_LIB}, 1137 $ENV{URXVT_PERL_LIB},
1072 "$ENV{HOME}/.urxvt/ext", 1138 "$ENV{HOME}/.urxvt/ext",
1073 "$LIBDIR/perl" 1139 "$LIBDIR/perl"
1074} 1140}
1075 1141
1076sub scan_meta { 1142# scan for available extensions and collect their metadata
1143sub scan_extensions {
1077 my ($self) = @_; 1144 my ($self) = @_;
1145
1146 return if exists $self->{meta};
1147
1078 my @libdirs = perl_libdirs $self; 1148 my @libdirs = perl_libdirs $self;
1079 1149
1080 return if $self->{meta_libdirs} eq join "\x00", @libdirs; 1150# return if $self->{meta_libdirs} eq join "\x00", @libdirs;#d#
1081 1151
1082 my %meta;
1083
1084 $self->{meta_libdirs} = join "\x00", @libdirs; 1152# $self->{meta_libdirs} = join "\x00", @libdirs;#d#
1085 $self->{meta} = \%meta; 1153 $self->{meta} = \my %meta;
1086 1154
1155 # first gather extensions
1087 for my $dir (reverse @libdirs) { 1156 for my $dir (reverse @libdirs) {
1088 opendir my $fh, $dir 1157 opendir my $fh, $dir
1089 or next; 1158 or next;
1090 for my $ext (readdir $fh) { 1159 for my $ext (readdir $fh) {
1091 $ext !~ /^\./ 1160 $ext !~ /^\./
1092 and open my $fh, "<", "$dir/$ext" 1161 and open my $fh, "<", "$dir/$ext"
1093 or next; 1162 or next;
1094 1163
1164 my %ext = (dir => $dir);
1165
1095 while (<$fh>) { 1166 while (<$fh>) {
1096 if (/^#:META:X_RESOURCE:(.*)/) { 1167 if (/^#:META:(?:X_)?RESOURCE:(.*)/) {
1097 my ($pattern, $type, $desc) = split /:/, $1; 1168 my ($pattern, $type, $desc) = split /:/, $1;
1098 $pattern =~ s/^%(\.|$)/$ext$1/g; # % in pattern == extension name 1169 $pattern =~ s/^%(\.|$)/$ext$1/g; # % in pattern == extension name
1099 if ($pattern =~ /[^a-zA-Z0-9\-\.]/) { 1170 if ($pattern =~ /[^a-zA-Z0-9\-\.]/) {
1100 warn "$dir/$ext: meta resource '$pattern' contains illegal characters (not alphanumeric nor . nor *)\n"; 1171 warn "$dir/$ext: meta resource '$pattern' contains illegal characters (not alphanumeric nor . nor *)\n";
1101 } else { 1172 } else {
1102 $meta{resource}{$pattern} = [$ext, $type, $desc]; 1173 $ext{resource}{$pattern} = [$ext, $type, $desc];
1103 } 1174 }
1175 } elsif (/^#:META:BINDING:(.*)/) {
1176 my ($keysym, $action) = split /:/, $1;
1177 $ext{binding}{$keysym} = [$ext, $action];
1104 } elsif (/^\s*(?:#|$)/) { 1178 } elsif (/^\s*(?:#|$)/) {
1105 # skip other comments and empty lines 1179 # skip other comments and empty lines
1106 } else { 1180 } else {
1107 last; # stop parsing on first non-empty non-comment line 1181 last; # stop parsing on first non-empty non-comment line
1108 } 1182 }
1109 } 1183 }
1184
1185 $meta{ext}{$ext} = \%ext;
1110 } 1186 }
1187 }
1188
1189 # and now merge resources and bindings
1190 while (my ($k, $v) = each %{ $meta{ext} }) {
1191 #TODO: should check for extensions overriding each other
1192 %{ $meta{resource} } = (%{ $meta{resource} }, %{ $v->{resource} });
1193 %{ $meta{binding} } = (%{ $meta{binding} }, %{ $v->{binding} });
1111 } 1194 }
1112} 1195}
1113 1196
1114=item $term = new urxvt::term $envhashref, $rxvtname, [arg...] 1197=item $term = new urxvt::term $envhashref, $rxvtname, [arg...]
1115 1198
1231Returns the X-Resource for the given pattern, excluding the program or 1314Returns the X-Resource for the given pattern, excluding the program or
1232class name, i.e. C<< $term->x_resource ("boldFont") >> should return the 1315class name, i.e. C<< $term->x_resource ("boldFont") >> should return the
1233same value as used by this instance of rxvt-unicode. Returns C<undef> if no 1316same value as used by this instance of rxvt-unicode. Returns C<undef> if no
1234resource with that pattern exists. 1317resource with that pattern exists.
1235 1318
1236Extensions that define extra resource or command line arguments also need 1319Extensions that define extra resources also need to call this method
1237to call this method to access their values. 1320to access their values.
1238 1321
1239If the method is called on an extension object (basically, from an 1322If the method is called on an extension object (basically, from an
1240extension), then the special prefix C<%.> will be replaced by the name of 1323extension), then the special prefix C<%.> will be replaced by the name of
1241the extension and a dot, and the lone string C<%> will be replaced by the 1324the extension and a dot, and the lone string C<%> will be replaced by the
1242extension name itself. This makes it possible to code extensions so you 1325extension name itself. This makes it possible to code extensions so you
1243can rename them and get a new set of commandline switches and resources 1326can rename them and get a new set of resources without having to change
1244without having to change the actual code. 1327the actual code.
1245 1328
1246This method should only be called during the C<on_start> hook, as there is 1329This method should only be called during the C<on_start> hook, as there is
1247only one resource database per display, and later invocations might return 1330only one resource database per display, and later invocations might return
1248the wrong resources. 1331the wrong resources.
1249 1332
1261 my $res = &x_resource; 1344 my $res = &x_resource;
1262 1345
1263 $res =~ /^\s*(?:true|yes|on|1)\s*$/i ? 1 : defined $res && 0 1346 $res =~ /^\s*(?:true|yes|on|1)\s*$/i ? 1 : defined $res && 0
1264} 1347}
1265 1348
1266=item $success = $term->parse_keysym ($key, $octets) 1349=item $success = $term->bind_action ($key, $action)
1267 1350
1268Adds a key binding exactly as specified via a resource. See the 1351Adds a key binding exactly as specified via a C<keysym> resource. See the
1269C<keysym> resource in the urxvt(1) manpage. 1352C<keysym> resource in the urxvt(1) manpage.
1270 1353
1271=item $term->register_command ($keysym, $modifiermask, $string) 1354To add default bindings for an extension, the extension should call C<<
1355->bind_action >> on it's C<init> hook for every such binding. Doing it
1356in the C<init> hook allows users the override or remove the the binding
1357again.
1272 1358
1273Adds a key binding. This is a lower level api compared to 1359Example: the C<searchable-scrollback> by default binds itself
1274C<parse_keysym>, as it expects a parsed key description, and can be 1360on C<Meta-s>, using C<< $self->bind_action >>, which calls C<<
1275used only inside either the C<on_init> hook, to add a binding, or the 1361$term->bind_action >>.
1276C<on_register_command> hook, to modify a parsed binding. 1362
1363 sub init {
1364 my ($self) = @_;
1365
1366 $self->bind_action ("M-s" => "%:start");
1367 }
1277 1368
1278=item $rend = $term->rstyle ([$new_rstyle]) 1369=item $rend = $term->rstyle ([$new_rstyle])
1279 1370
1280Return and optionally change the current rendition. Text that is output by 1371Return and optionally change the current rendition. Text that is output by
1281the terminal application will use this style. 1372the terminal application will use this style.
1439 1530
1440=item $term->scr_add_lines ($string) 1531=item $term->scr_add_lines ($string)
1441 1532
1442Write the given text string to the screen, as if output by the application 1533Write the given text string to the screen, as if output by the application
1443running inside the terminal. It may not contain command sequences (escape 1534running inside the terminal. It may not contain command sequences (escape
1444codes), but is free to use line feeds, carriage returns and tabs. The 1535codes - see C<cmd_parse> for that), but is free to use line feeds,
1445string is a normal text string, not in locale-dependent encoding. 1536carriage returns and tabs. The string is a normal text string, not in
1537locale-dependent encoding.
1446 1538
1447Normally its not a good idea to use this function, as programs might be 1539Normally its not a good idea to use this function, as programs might be
1448confused by changes in cursor position or scrolling. Its useful inside a 1540confused by changes in cursor position or scrolling. Its useful inside a
1449C<on_add_lines> hook, though. 1541C<on_add_lines> hook, though.
1450 1542
1458locale-specific encoding of the terminal and can contain command sequences 1550locale-specific encoding of the terminal and can contain command sequences
1459(escape codes) that will be interpreted. 1551(escape codes) that will be interpreted.
1460 1552
1461=item $term->tt_write ($octets) 1553=item $term->tt_write ($octets)
1462 1554
1463Write the octets given in C<$octets> to the tty (i.e. as program input). To 1555Write the octets given in C<$octets> to the tty (i.e. as user input
1556to the program, see C<cmd_parse> for the opposite direction). To pass
1464pass characters instead of octets, you should convert your strings first 1557characters instead of octets, you should convert your strings first to the
1465to the locale-specific encoding using C<< $term->locale_encode >>. 1558locale-specific encoding using C<< $term->locale_encode >>.
1559
1560=item $term->tt_write_user_input ($octets)
1561
1562Like C<tt_write>, but should be used when writing strings in response to
1563the user pressing a key, to invoke the additional actions requested by
1564the user for that case (C<tt_write> doesn't do that).
1565
1566The typical use case would be inside C<on_action> hooks.
1466 1567
1467=item $term->tt_paste ($octets) 1568=item $term->tt_paste ($octets)
1468 1569
1469Write the octets given in C<$octets> to the tty as a paste, converting NL to 1570Write the octets given in C<$octets> to the tty as a paste, converting NL to
1470CR and bracketing the data with control sequences if bracketed paste mode 1571CR and bracketing the data with control sequences if bracketed paste mode

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