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Revision 1.227 by root, Sun Mar 31 20:30:32 2013 UTC vs.
Revision 1.244 by sf-exg, Mon Oct 13 12:17:48 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 comments in extensions that define
121different types of metadata:
122
123=over 4
124
125=item #:META:RESOURCE:name:type:desc
126
127The RESOURCE comment defines a resource used by the extension, where
128C<name> is the resource name, C<type> is the resource type, C<boolean>
129or C<string>, and C<desc> is the resource description.
130
131=item #:META:BINDING:sym:action
132
133The BINDING comment defines a default binding for an action provided
134by the extension, where C<sym> is the key combination that triggers
135the action, whose format is defined in the description of the
136B<keysym> resource in the urxvt(1) manpage, and C<action> is the name
137of the action method.
138
139=back
140
111=head2 Hooks 141=head2 Hooks
112 142
113The following subroutines can be declared in extension files, and will be 143The following subroutines can be declared in extension files, and will be
114called whenever the relevant event happens. 144called whenever the relevant event happens.
115 145
281 311
282=item on_refresh_end $term 312=item on_refresh_end $term
283 313
284Called just after the screen gets redrawn. See C<on_refresh_begin>. 314Called just after the screen gets redrawn. See C<on_refresh_begin>.
285 315
316=item on_action $term, $string
317
318Called whenever an action is invoked for the corresponding extension
319(e.g. via a C<extension:string> builtin action bound to a key, see
320description of the B<keysym> resource in the urxvt(1) manpage). The
321event is simply the action string. Note that an action event is always
322associated to a single extension.
323
286=item on_user_command $term, $string 324=item on_user_command $term, $string *DEPRECATED*
287 325
288Called whenever a user-configured event is being activated (e.g. via 326Called 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> 327a C<perl:string> action bound to a key, see description of the B<keysym>
290resource in the urxvt(1) manpage). 328resource in the urxvt(1) manpage).
291 329
292The event is simply the action string. This interface is assumed to change 330The event is simply the action string. This interface is going away in
293slightly in the future. 331preference 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 TRUE the binding is not
299registered. It can be used to modify a binding by calling
300C<register_command>.
301 332
302=item on_resize_all_windows $term, $new_width, $new_height 333=item on_resize_all_windows $term, $new_width, $new_height
303 334
304Called just after the new window size has been calculated, but before 335Called just after the new window size has been calculated, but before
305windows are actually being resized or hints are being set. If this hook 336windows are actually being resized or hints are being set. If this hook
306returns TRUE, setting of the window hints is being skipped. 337returns a true value, setting of the window hints is being skipped.
307 338
308=item on_x_event $term, $event 339=item on_x_event $term, $event
309 340
310Called on every X event received on the vt window (and possibly other 341Called on every X event received on the vt window (and possibly other
311windows). Should only be used as a last resort. Most event structure 342windows). Should only be used as a last resort. Most event structure
350manpage), with the additional members C<row> and C<col>, which are the 381manpage), with the additional members C<row> and C<col>, which are the
351(real, not screen-based) row and column under the mouse cursor. 382(real, not screen-based) row and column under the mouse cursor.
352 383
353C<on_key_press> additionally receives the string rxvt-unicode would 384C<on_key_press> additionally receives the string rxvt-unicode would
354output, if any, in locale-specific encoding. 385output, if any, in locale-specific encoding.
355
356subwindow.
357 386
358=item on_client_message $term, $event 387=item on_client_message $term, $event
359 388
360=item on_wm_protocols $term, $event 389=item on_wm_protocols $term, $event
361 390
564no warnings 'utf8'; 593no warnings 'utf8';
565 594
566sub parse_resource { 595sub parse_resource {
567 my ($term, $name, $isarg, $longopt, $flag, $value) = @_; 596 my ($term, $name, $isarg, $longopt, $flag, $value) = @_;
568 597
569 $name =~ y/-/./ if $isarg;
570
571 $term->scan_meta; 598 $term->scan_extensions;
572 599
573 my $r = $term->{meta}{resource}; 600 my $r = $term->{meta}{resource};
574 keys %$r; # reste iterator 601 keys %$r; # reset iterator
575 while (my ($pattern, $v) = each %$r) { 602 while (my ($k, $v) = each %$r) {
576 if ( 603 my $pattern = $k;
604 $pattern =~ y/./-/ if $isarg;
605 my $prefix = $name;
606 my $suffix;
577 $pattern =~ /\.$/ 607 if ($pattern =~ /\-$/) {
578 ? $pattern eq substr $name, 0, length $pattern 608 $prefix = substr $name, 0, length $pattern;
579 : $pattern eq $name 609 $suffix = substr $name, length $pattern;
580 ) { 610 }
611 if ($pattern eq $prefix) {
581 $name = "$urxvt::RESCLASS.$name"; 612 $name = "$urxvt::RESCLASS.$k$suffix";
582 613
583 push @{ $term->{perl_ext_3} }, $v->[0]; 614 push @{ $term->{perl_ext_3} }, $v->[0];
584 615
585 if ($v->[1] eq "boolean") { 616 if ($v->[1] eq "boolean") {
586 $term->put_option_db ($name, $flag ? "true" : "false"); 617 $term->put_option_db ($name, $flag ? "true" : "false");
596} 627}
597 628
598sub usage { 629sub usage {
599 my ($term, $usage_type) = @_; 630 my ($term, $usage_type) = @_;
600 631
601 $term->scan_meta; 632 $term->scan_extensions;
602 633
603 my $r = $term->{meta}{resource}; 634 my $r = $term->{meta}{resource};
604 635
605 for my $pattern (sort keys %$r) { 636 for my $pattern (sort keys %$r) {
606 my ($ext, $type, $desc) = @{ $r->{$pattern} }; 637 my ($ext, $type, $desc) = @{ $r->{$pattern} };
667# called by the rxvt core 698# called by the rxvt core
668sub invoke { 699sub invoke {
669 local $TERM = shift; 700 local $TERM = shift;
670 my $htype = shift; 701 my $htype = shift;
671 702
672 if ($htype == 0) { # INIT 703 if ($htype == HOOK_INIT) {
673 my @dirs = $TERM->perl_libdirs; 704 my @dirs = $TERM->perl_libdirs;
705
706 $TERM->scan_extensions;
674 707
675 my %ext_arg; 708 my %ext_arg;
676 709
677 { 710 {
678 my @init = @TERM_INIT; 711 my @init = @TERM_INIT;
682 @TERM_EXT = (); 715 @TERM_EXT = ();
683 $TERM->register_package ($_) for @pkg; 716 $TERM->register_package ($_) for @pkg;
684 } 717 }
685 718
686 for ( 719 for (
720 (grep $_, map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2),
687 @{ delete $TERM->{perl_ext_3} }, 721 @{ delete $TERM->{perl_ext_3} }
688 grep $_, map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2
689 ) { 722 ) {
690 if ($_ eq "default") { 723 if ($_ eq "default") {
691 $ext_arg{$_} ||= [] for qw(selection option-popup selection-popup searchable-scrollback readline); 724
725 $ext_arg{$_} = []
726 for
727 qw(selection option-popup selection-popup readline),
728 map $_->[0], values %{ $TERM->{meta}{binding} };
729
730 for ($TERM->_keysym_resources) {
731 next if /^(?:string|command|builtin|builtin-string|perl)/;
732 next unless /^([A-Za-z0-9_\-]+):/;
733
734 my $ext = $1;
735
736 $ext_arg{$ext} = [];
737 }
738
692 } elsif (/^-(.*)$/) { 739 } elsif (/^-(.*)$/) {
693 delete $ext_arg{$1}; 740 delete $ext_arg{$1};
741
694 } elsif (/^([^<]+)<(.*)>$/) { 742 } elsif (/^([^<]+)<(.*)>$/) {
695 push @{ $ext_arg{$1} }, $2; 743 push @{ $ext_arg{$1} }, $2;
744
696 } else { 745 } else {
697 $ext_arg{$_} ||= []; 746 $ext_arg{$_} ||= [];
747 }
748 }
749
750 # now register default key bindings
751 for my $ext (sort keys %ext_arg) {
752 while (my ($k, $v) = each %{ $TERM->{meta}{ext}{$ext}{binding} }) {
753 $TERM->bind_action ($k, "$v->[0]:$v->[1]");
698 } 754 }
699 } 755 }
700 756
701 for my $ext (sort keys %ext_arg) { 757 for my $ext (sort keys %ext_arg) {
702 my @files = grep -f $_, map "$_/$ext", @dirs; 758 my @files = grep -f $_, map "$_/$ext", @dirs;
716 772
717 if (my $cb = $TERM->{_hook}[$htype]) { 773 if (my $cb = $TERM->{_hook}[$htype]) {
718 verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")" 774 verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
719 if $verbosity >= 10; 775 if $verbosity >= 10;
720 776
777 if ($htype == HOOK_ACTION) {
778 # this hook is only sent to the extension with the name
779 # matching the first arg
780 my $pkg = shift;
781 $pkg =~ y/-/_/;
782 $pkg = "urxvt::ext::$pkg";
783
784 $cb = $cb->{$pkg}
785 or return undef; #TODO: maybe warn user?
786
787 $cb = { $pkg => $cb };
788 }
789
721 for my $pkg (keys %$cb) { 790 for my $pkg (keys %$cb) {
722 my $retval_ = eval { $cb->{$pkg}->($TERM->{_pkg}{$pkg} || $TERM, @_) }; 791 my $retval_ = eval { $cb->{$pkg}->($TERM->{_pkg}{$pkg} || $TERM, @_) };
723 $retval ||= $retval_; 792 $retval ||= $retval_;
724 793
725 if ($@) { 794 if ($@) {
730 799
731 verbose 11, "$HOOKNAME[$htype] returning <$retval>" 800 verbose 11, "$HOOKNAME[$htype] returning <$retval>"
732 if $verbosity >= 11; 801 if $verbosity >= 11;
733 } 802 }
734 803
735 if ($htype == 1) { # DESTROY 804 if ($htype == HOOK_DESTROY) {
736 # clear package objects 805 # clear package objects
737 %$_ = () for values %{ $TERM->{_pkg} }; 806 %$_ = () for values %{ $TERM->{_pkg} };
738 807
739 # clear package 808 # clear package
740 %$TERM = (); 809 %$TERM = ();
827} 896}
828 897
829=item $self->enable ($hook_name => $cb[, $hook_name => $cb..]) 898=item $self->enable ($hook_name => $cb[, $hook_name => $cb..])
830 899
831Dynamically enable the given hooks (named without the C<on_> prefix) for 900Dynamically enable the given hooks (named without the C<on_> prefix) for
832this extension, replacing any previous hook. This is useful when you want 901this extension, replacing any hook previously installed via C<enable> in
833to overwrite time-critical hooks only temporarily. 902this extension.
903
904This is useful when you want to overwrite time-critical hooks only
905temporarily.
834 906
835To install additional callbacks for the same hook, you can use the C<on> 907To install additional callbacks for the same hook, you can use the C<on>
836method of the C<urxvt::term> class. 908method of the C<urxvt::term> class.
837 909
838=item $self->disable ($hook_name[, $hook_name..]) 910=item $self->disable ($hook_name[, $hook_name..])
1062 $ENV{URXVT_PERL_LIB}, 1134 $ENV{URXVT_PERL_LIB},
1063 "$ENV{HOME}/.urxvt/ext", 1135 "$ENV{HOME}/.urxvt/ext",
1064 "$LIBDIR/perl" 1136 "$LIBDIR/perl"
1065} 1137}
1066 1138
1067sub scan_meta { 1139# scan for available extensions and collect their metadata
1140sub scan_extensions {
1068 my ($self) = @_; 1141 my ($self) = @_;
1142
1143 return if exists $self->{meta};
1144
1069 my @libdirs = perl_libdirs $self; 1145 my @libdirs = perl_libdirs $self;
1070 1146
1071 return if $self->{meta_libdirs} eq join "\x00", @libdirs; 1147# return if $self->{meta_libdirs} eq join "\x00", @libdirs;#d#
1072 1148
1073 my %meta;
1074
1075 $self->{meta_libdirs} = join "\x00", @libdirs; 1149# $self->{meta_libdirs} = join "\x00", @libdirs;#d#
1076 $self->{meta} = \%meta; 1150 $self->{meta} = \my %meta;
1077 1151
1152 # first gather extensions
1078 for my $dir (reverse @libdirs) { 1153 for my $dir (reverse @libdirs) {
1079 opendir my $fh, $dir 1154 opendir my $fh, $dir
1080 or next; 1155 or next;
1081 for my $ext (readdir $fh) { 1156 for my $ext (readdir $fh) {
1082 $ext !~ /^\./ 1157 $ext !~ /^\./
1083 and open my $fh, "<", "$dir/$ext" 1158 and open my $fh, "<", "$dir/$ext"
1084 or next; 1159 or next;
1085 1160
1161 my %ext = (dir => $dir);
1162
1086 while (<$fh>) { 1163 while (<$fh>) {
1087 if (/^#:META:X_RESOURCE:(.*)/) { 1164 if (/^#:META:(?:X_)?RESOURCE:(.*)/) {
1088 my ($pattern, $type, $desc) = split /:/, $1; 1165 my ($pattern, $type, $desc) = split /:/, $1;
1089 $pattern =~ s/^%(\.|$)/$ext$1/g; # % in pattern == extension name 1166 $pattern =~ s/^%(\.|$)/$ext$1/g; # % in pattern == extension name
1090 if ($pattern =~ /[^a-zA-Z0-9\-\.]/) { 1167 if ($pattern =~ /[^a-zA-Z0-9\-\.]/) {
1091 warn "$dir/$ext: meta resource '$pattern' contains illegal characters (not alphanumeric nor . nor *)\n"; 1168 warn "$dir/$ext: meta resource '$pattern' contains illegal characters (not alphanumeric nor . nor *)\n";
1092 } else { 1169 } else {
1093 $meta{resource}{$pattern} = [$ext, $type, $desc]; 1170 $ext{resource}{$pattern} = [$ext, $type, $desc];
1094 } 1171 }
1172 } elsif (/^#:META:BINDING:(.*)/) {
1173 my ($keysym, $action) = split /:/, $1;
1174 $ext{binding}{$keysym} = [$ext, $action];
1095 } elsif (/^\s*(?:#|$)/) { 1175 } elsif (/^\s*(?:#|$)/) {
1096 # skip other comments and empty lines 1176 # skip other comments and empty lines
1097 } else { 1177 } else {
1098 last; # stop parsing on first non-empty non-comment line 1178 last; # stop parsing on first non-empty non-comment line
1099 } 1179 }
1100 } 1180 }
1181
1182 $meta{ext}{$ext} = \%ext;
1101 } 1183 }
1184 }
1185
1186 # and now merge resources and bindings
1187 while (my ($k, $v) = each %{ $meta{ext} }) {
1188 #TODO: should check for extensions overriding each other
1189 %{ $meta{resource} } = (%{ $meta{resource} }, %{ $v->{resource} });
1190 %{ $meta{binding} } = (%{ $meta{binding} }, %{ $v->{binding} });
1102 } 1191 }
1103} 1192}
1104 1193
1105=item $term = new urxvt::term $envhashref, $rxvtname, [arg...] 1194=item $term = new urxvt::term $envhashref, $rxvtname, [arg...]
1106 1195
1222Returns the X-Resource for the given pattern, excluding the program or 1311Returns the X-Resource for the given pattern, excluding the program or
1223class name, i.e. C<< $term->x_resource ("boldFont") >> should return the 1312class name, i.e. C<< $term->x_resource ("boldFont") >> should return the
1224same value as used by this instance of rxvt-unicode. Returns C<undef> if no 1313same value as used by this instance of rxvt-unicode. Returns C<undef> if no
1225resource with that pattern exists. 1314resource with that pattern exists.
1226 1315
1227Extensions that define extra resource or command line arguments also need 1316Extensions that define extra resources also need to call this method
1228to call this method to access their values. 1317to access their values.
1229 1318
1230If the method is called on an extension object (basically, from an 1319If the method is called on an extension object (basically, from an
1231extension), then the special prefix C<%.> will be replaced by the name of 1320extension), then the special prefix C<%.> will be replaced by the name of
1232the extension and a dot, and the lone string C<%> will be replaced by the 1321the extension and a dot, and the lone string C<%> will be replaced by the
1233extension name itself. This makes it possible to code extensions so you 1322extension name itself. This makes it possible to code extensions so you
1234can rename them and get a new set of commandline switches and resources 1323can rename them and get a new set of resources without having to change
1235without having to change the actual code. 1324the actual code.
1236 1325
1237This method should only be called during the C<on_start> hook, as there is 1326This method should only be called during the C<on_start> hook, as there is
1238only one resource database per display, and later invocations might return 1327only one resource database per display, and later invocations might return
1239the wrong resources. 1328the wrong resources.
1240 1329
1252 my $res = &x_resource; 1341 my $res = &x_resource;
1253 1342
1254 $res =~ /^\s*(?:true|yes|on|1)\s*$/i ? 1 : defined $res && 0 1343 $res =~ /^\s*(?:true|yes|on|1)\s*$/i ? 1 : defined $res && 0
1255} 1344}
1256 1345
1257=item $success = $term->parse_keysym ($key, $octets) 1346=item $success = $term->bind_action ($key, $octets)
1258 1347
1259Adds a key binding exactly as specified via a resource. See the 1348Adds a key binding exactly as specified via a C<keysym> resource. See the
1260C<keysym> resource in the urxvt(1) manpage. 1349C<keysym> resource in the urxvt(1) manpage.
1261
1262=item $term->register_command ($keysym, $modifiermask, $string)
1263
1264Adds a key binding. This is a lower level api compared to
1265C<parse_keysym>, as it expects a parsed key description, and can be
1266used only inside either the C<on_init> hook, to add a binding, or the
1267C<on_register_command> hook, to modify a parsed binding.
1268 1350
1269=item $rend = $term->rstyle ([$new_rstyle]) 1351=item $rend = $term->rstyle ([$new_rstyle])
1270 1352
1271Return and optionally change the current rendition. Text that is output by 1353Return and optionally change the current rendition. Text that is output by
1272the terminal application will use this style. 1354the terminal application will use this style.
1452=item $term->tt_write ($octets) 1534=item $term->tt_write ($octets)
1453 1535
1454Write the octets given in C<$octets> to the tty (i.e. as program input). To 1536Write the octets given in C<$octets> to the tty (i.e. as program input). To
1455pass characters instead of octets, you should convert your strings first 1537pass characters instead of octets, you should convert your strings first
1456to the locale-specific encoding using C<< $term->locale_encode >>. 1538to the locale-specific encoding using C<< $term->locale_encode >>.
1539
1540=item $term->tt_write_user_input ($octets)
1541
1542Like C<tt_write>, but should be used when writing strings in response to
1543the user pressing a key, to invoke the additional actions requested by
1544the user for that case (C<tt_write> doesn't do that).
1545
1546The typical use case would be inside C<on_action> hooks.
1457 1547
1458=item $term->tt_paste ($octets) 1548=item $term->tt_paste ($octets)
1459 1549
1460Write the octets given in C<$octets> to the tty as a paste, converting NL to 1550Write the octets given in C<$octets> to the tty as a paste, converting NL to
1461CR and bracketing the data with control sequences if bracketed paste mode 1551CR and bracketing the data with control sequences if bracketed paste mode

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