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Revision 1.229 by root, Sat Apr 26 18:53:51 2014 UTC vs.
Revision 1.248 by root, Fri Dec 26 21:01:46 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} };
667# called by the rxvt core 692# called by the rxvt core
668sub invoke { 693sub invoke {
669 local $TERM = shift; 694 local $TERM = shift;
670 my $htype = shift; 695 my $htype = shift;
671 696
672 if ($htype == 0) { # INIT 697 if ($htype == HOOK_INIT) {
673 my @dirs = $TERM->perl_libdirs; 698 my @dirs = $TERM->perl_libdirs;
699
700 $TERM->scan_extensions;
674 701
675 my %ext_arg; 702 my %ext_arg;
676 703
677 { 704 {
678 my @init = @TERM_INIT; 705 my @init = @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 $ext_arg{$_} = []
691 $ext_arg{$_} ||= [] for qw(selection option-popup selection-popup searchable-scrollback readline); 720 for qw(selection option-popup selection-popup readline searchable-scrollback);
721
722 for ($TERM->_keysym_resources) {
723 next if /^(?:string|command|builtin|builtin-string|perl)/;
724 next unless /^([A-Za-z0-9_\-]+):/;
725
726 my $ext = $1;
727
728 $ext_arg{$ext} = [];
729 }
730
692 } elsif (/^-(.*)$/) { 731 } elsif (/^-(.*)$/) {
693 delete $ext_arg{$1}; 732 delete $ext_arg{$1};
733
694 } elsif (/^([^<]+)<(.*)>$/) { 734 } elsif (/^([^<]+)<(.*)>$/) {
695 push @{ $ext_arg{$1} }, $2; 735 push @{ $ext_arg{$1} }, $2;
736
696 } else { 737 } else {
697 $ext_arg{$_} ||= []; 738 $ext_arg{$_} ||= [];
698 } 739 }
699 } 740 }
700 741
716 757
717 if (my $cb = $TERM->{_hook}[$htype]) { 758 if (my $cb = $TERM->{_hook}[$htype]) {
718 verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")" 759 verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
719 if $verbosity >= 10; 760 if $verbosity >= 10;
720 761
762 if ($htype == HOOK_ACTION) {
763 # this hook is only sent to the extension with the name
764 # matching the first arg
765 my $pkg = shift;
766 $pkg =~ y/-/_/;
767 $pkg = "urxvt::ext::$pkg";
768
769 $cb = $cb->{$pkg}
770 or return undef; #TODO: maybe warn user?
771
772 $cb = { $pkg => $cb };
773 }
774
721 for my $pkg (keys %$cb) { 775 for my $pkg (keys %$cb) {
722 my $retval_ = eval { $cb->{$pkg}->($TERM->{_pkg}{$pkg} || $TERM, @_) }; 776 my $retval_ = eval { $cb->{$pkg}->($TERM->{_pkg}{$pkg} || $TERM, @_) };
723 $retval ||= $retval_; 777 $retval ||= $retval_;
724 778
725 if ($@) { 779 if ($@) {
730 784
731 verbose 11, "$HOOKNAME[$htype] returning <$retval>" 785 verbose 11, "$HOOKNAME[$htype] returning <$retval>"
732 if $verbosity >= 11; 786 if $verbosity >= 11;
733 } 787 }
734 788
735 if ($htype == 1) { # DESTROY 789 if ($htype == HOOK_DESTROY) {
736 # clear package objects 790 # clear package objects
737 %$_ = () for values %{ $TERM->{_pkg} }; 791 %$_ = () for values %{ $TERM->{_pkg} };
738 792
739 # clear package 793 # clear package
740 %$TERM = (); 794 %$TERM = ();
912 } 966 }
913 967
914 bless \%disable, "urxvt::extension::on_disable" 968 bless \%disable, "urxvt::extension::on_disable"
915} 969}
916 970
971=item $self->bind_action ($hotkey, $action)
972
917=item $self->x_resource ($pattern) 973=item $self->x_resource ($pattern)
918 974
919=item $self->x_resource_boolean ($pattern) 975=item $self->x_resource_boolean ($pattern)
920 976
921These methods support an additional C<%> prefix when called on an 977These methods support an additional C<%> prefix for C<$action> or
922extension object - see the description of these methods in the 978C<$pattern> when called on an extension object, compared to the
979C<urxvt::term> methods of the same name - see the description of these
923C<urxvt::term> class for details. 980methods in the C<urxvt::term> class for details.
924 981
925=cut 982=cut
983
984sub bind_action {
985 my ($self, $hotkey, $action) = @_;
986 $action =~ s/^%:/$_[0]{_name}:/;
987 $self->{term}->bind_action ($hotkey, $action)
988}
926 989
927sub x_resource { 990sub x_resource {
928 my ($self, $name) = @_; 991 my ($self, $name) = @_;
929 $name =~ s/^%(\.|$)/$_[0]{_name}$1/; 992 $name =~ s/^%(\.|$)/$_[0]{_name}$1/;
930 $self->{term}->x_resource ($name) 993 $self->{term}->x_resource ($name)
1065 $ENV{URXVT_PERL_LIB}, 1128 $ENV{URXVT_PERL_LIB},
1066 "$ENV{HOME}/.urxvt/ext", 1129 "$ENV{HOME}/.urxvt/ext",
1067 "$LIBDIR/perl" 1130 "$LIBDIR/perl"
1068} 1131}
1069 1132
1070sub scan_meta { 1133# scan for available extensions and collect their metadata
1134sub scan_extensions {
1071 my ($self) = @_; 1135 my ($self) = @_;
1136
1137 return if exists $self->{meta};
1138
1072 my @libdirs = perl_libdirs $self; 1139 my @libdirs = perl_libdirs $self;
1073 1140
1074 return if $self->{meta_libdirs} eq join "\x00", @libdirs; 1141# return if $self->{meta_libdirs} eq join "\x00", @libdirs;#d#
1075 1142
1076 my %meta;
1077
1078 $self->{meta_libdirs} = join "\x00", @libdirs; 1143# $self->{meta_libdirs} = join "\x00", @libdirs;#d#
1079 $self->{meta} = \%meta; 1144 $self->{meta} = \my %meta;
1080 1145
1146 # first gather extensions
1081 for my $dir (reverse @libdirs) { 1147 for my $dir (reverse @libdirs) {
1082 opendir my $fh, $dir 1148 opendir my $fh, $dir
1083 or next; 1149 or next;
1084 for my $ext (readdir $fh) { 1150 for my $ext (readdir $fh) {
1085 $ext !~ /^\./ 1151 $ext !~ /^\./
1086 and open my $fh, "<", "$dir/$ext" 1152 and open my $fh, "<", "$dir/$ext"
1087 or next; 1153 or next;
1088 1154
1155 my %ext = (dir => $dir);
1156
1089 while (<$fh>) { 1157 while (<$fh>) {
1090 if (/^#:META:X_RESOURCE:(.*)/) { 1158 if (/^#:META:(?:X_)?RESOURCE:(.*)/) {
1091 my ($pattern, $type, $desc) = split /:/, $1; 1159 my ($pattern, $type, $desc) = split /:/, $1;
1092 $pattern =~ s/^%(\.|$)/$ext$1/g; # % in pattern == extension name 1160 $pattern =~ s/^%(\.|$)/$ext$1/g; # % in pattern == extension name
1093 if ($pattern =~ /[^a-zA-Z0-9\-\.]/) { 1161 if ($pattern =~ /[^a-zA-Z0-9\-\.]/) {
1094 warn "$dir/$ext: meta resource '$pattern' contains illegal characters (not alphanumeric nor . nor *)\n"; 1162 warn "$dir/$ext: meta resource '$pattern' contains illegal characters (not alphanumeric nor . nor *)\n";
1095 } else { 1163 } else {
1096 $meta{resource}{$pattern} = [$ext, $type, $desc]; 1164 $ext{resource}{$pattern} = [$ext, $type, $desc];
1097 } 1165 }
1098 } elsif (/^\s*(?:#|$)/) { 1166 } elsif (/^\s*(?:#|$)/) {
1099 # skip other comments and empty lines 1167 # skip other comments and empty lines
1100 } else { 1168 } else {
1101 last; # stop parsing on first non-empty non-comment line 1169 last; # stop parsing on first non-empty non-comment line
1102 } 1170 }
1103 } 1171 }
1172
1173 $meta{ext}{$ext} = \%ext;
1104 } 1174 }
1175 }
1176
1177 # and now merge resources
1178 while (my ($k, $v) = each %{ $meta{ext} }) {
1179 #TODO: should check for extensions overriding each other
1180 %{ $meta{resource} } = (%{ $meta{resource} }, %{ $v->{resource} });
1105 } 1181 }
1106} 1182}
1107 1183
1108=item $term = new urxvt::term $envhashref, $rxvtname, [arg...] 1184=item $term = new urxvt::term $envhashref, $rxvtname, [arg...]
1109 1185
1225Returns the X-Resource for the given pattern, excluding the program or 1301Returns the X-Resource for the given pattern, excluding the program or
1226class name, i.e. C<< $term->x_resource ("boldFont") >> should return the 1302class name, i.e. C<< $term->x_resource ("boldFont") >> should return the
1227same value as used by this instance of rxvt-unicode. Returns C<undef> if no 1303same value as used by this instance of rxvt-unicode. Returns C<undef> if no
1228resource with that pattern exists. 1304resource with that pattern exists.
1229 1305
1230Extensions that define extra resource or command line arguments also need 1306Extensions that define extra resources also need to call this method
1231to call this method to access their values. 1307to access their values.
1232 1308
1233If the method is called on an extension object (basically, from an 1309If the method is called on an extension object (basically, from an
1234extension), then the special prefix C<%.> will be replaced by the name of 1310extension), then the special prefix C<%.> will be replaced by the name of
1235the extension and a dot, and the lone string C<%> will be replaced by the 1311the extension and a dot, and the lone string C<%> will be replaced by the
1236extension name itself. This makes it possible to code extensions so you 1312extension name itself. This makes it possible to code extensions so you
1237can rename them and get a new set of commandline switches and resources 1313can rename them and get a new set of resources without having to change
1238without having to change the actual code. 1314the actual code.
1239 1315
1240This method should only be called during the C<on_start> hook, as there is 1316This method should only be called during the C<on_start> hook, as there is
1241only one resource database per display, and later invocations might return 1317only one resource database per display, and later invocations might return
1242the wrong resources. 1318the wrong resources.
1243 1319
1255 my $res = &x_resource; 1331 my $res = &x_resource;
1256 1332
1257 $res =~ /^\s*(?:true|yes|on|1)\s*$/i ? 1 : defined $res && 0 1333 $res =~ /^\s*(?:true|yes|on|1)\s*$/i ? 1 : defined $res && 0
1258} 1334}
1259 1335
1260=item $success = $term->parse_keysym ($key, $octets) 1336=item $success = $term->bind_action ($key, $action)
1261 1337
1262Adds a key binding exactly as specified via a resource. See the 1338Adds a key binding exactly as specified via a C<keysym> resource. See the
1263C<keysym> resource in the urxvt(1) manpage. 1339C<keysym> resource in the urxvt(1) manpage.
1264 1340
1265=item $term->register_command ($keysym, $modifiermask, $string) 1341To add default bindings for an extension, the extension should call C<<
1342->bind_action >> on it's C<init> hook for every such binding. Doing it
1343in the C<init> hook allows users the override or remove the the binding
1344again.
1266 1345
1267Adds a key binding. This is a lower level api compared to 1346Example: the C<searchable-scrollback> by default binds itself
1268C<parse_keysym>, as it expects a parsed key description, and can be 1347on C<Meta-s>, using C<< $self->bind_action >>, which calls C<<
1269used only inside either the C<on_init> hook, to add a binding, or the 1348$term->bind_action >>.
1270C<on_register_command> hook, to modify a parsed binding. 1349
1350 sub init {
1351 my ($self) = @_;
1352
1353 $self->bind_action ("M-s" => "%:start");
1354 }
1271 1355
1272=item $rend = $term->rstyle ([$new_rstyle]) 1356=item $rend = $term->rstyle ([$new_rstyle])
1273 1357
1274Return and optionally change the current rendition. Text that is output by 1358Return and optionally change the current rendition. Text that is output by
1275the terminal application will use this style. 1359the terminal application will use this style.
1433 1517
1434=item $term->scr_add_lines ($string) 1518=item $term->scr_add_lines ($string)
1435 1519
1436Write the given text string to the screen, as if output by the application 1520Write the given text string to the screen, as if output by the application
1437running inside the terminal. It may not contain command sequences (escape 1521running inside the terminal. It may not contain command sequences (escape
1438codes), but is free to use line feeds, carriage returns and tabs. The 1522codes - see C<cmd_parse> for that), but is free to use line feeds,
1439string is a normal text string, not in locale-dependent encoding. 1523carriage returns and tabs. The string is a normal text string, not in
1524locale-dependent encoding.
1440 1525
1441Normally its not a good idea to use this function, as programs might be 1526Normally its not a good idea to use this function, as programs might be
1442confused by changes in cursor position or scrolling. Its useful inside a 1527confused by changes in cursor position or scrolling. Its useful inside a
1443C<on_add_lines> hook, though. 1528C<on_add_lines> hook, though.
1444 1529
1452locale-specific encoding of the terminal and can contain command sequences 1537locale-specific encoding of the terminal and can contain command sequences
1453(escape codes) that will be interpreted. 1538(escape codes) that will be interpreted.
1454 1539
1455=item $term->tt_write ($octets) 1540=item $term->tt_write ($octets)
1456 1541
1457Write the octets given in C<$octets> to the tty (i.e. as program input). To 1542Write the octets given in C<$octets> to the tty (i.e. as user input
1543to the program, see C<cmd_parse> for the opposite direction). To pass
1458pass characters instead of octets, you should convert your strings first 1544characters instead of octets, you should convert your strings first to the
1459to the locale-specific encoding using C<< $term->locale_encode >>. 1545locale-specific encoding using C<< $term->locale_encode >>.
1546
1547=item $term->tt_write_user_input ($octets)
1548
1549Like C<tt_write>, but should be used when writing strings in response to
1550the user pressing a key, to invoke the additional actions requested by
1551the user for that case (C<tt_write> doesn't do that).
1552
1553The typical use case would be inside C<on_action> hooks.
1460 1554
1461=item $term->tt_paste ($octets) 1555=item $term->tt_paste ($octets)
1462 1556
1463Write the octets given in C<$octets> to the tty as a paste, converting NL to 1557Write the octets given in C<$octets> to the tty as a paste, converting NL to
1464CR and bracketing the data with control sequences if bracketed paste mode 1558CR and bracketing the data with control sequences if bracketed paste mode

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