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Revision 1.231 by root, Sun Apr 27 20:26:28 2014 UTC vs.
Revision 1.254 by sf-exg, Tue Mar 17 09:23:08 2015 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 using so called META comments,
51described below. Similarly to builtin resources, extension resources
52can also be specified on the command line as long options (with C<.>
53replaced by C<->), in which case the corresponding extension is loaded
54automatically. For this to work the extension B<must> define META
55comments for its resources.
50 56
51=head1 API DOCUMENTATION 57=head1 API DOCUMENTATION
52 58
53=head2 General API Considerations 59=head2 General API Considerations
54 60
106C<urxvt::term> class on this object. 112C<urxvt::term> class on this object.
107 113
108Additional methods only supported for extension objects are described in 114Additional methods only supported for extension objects are described in
109the C<urxvt::extension> section below. 115the C<urxvt::extension> section below.
110 116
117=head2 META comments
118
119Rxvt-unicode recognizes special meta comments in extensions that define
120different types of metadata.
121
122Currently, it recognises only one such comment:
123
124=over 4
125
126=item #:META:RESOURCE:name:type:desc
127
128The RESOURCE comment defines a resource used by the extension, where
129C<name> is the resource name, C<type> is the resource type, C<boolean>
130or C<string>, and C<desc> is the resource description.
131
132=back
133
111=head2 Hooks 134=head2 Hooks
112 135
113The following subroutines can be declared in extension files, and will be 136The following subroutines can be declared in extension files, and will be
114called whenever the relevant event happens. 137called whenever the relevant event happens.
115 138
281 304
282=item on_refresh_end $term 305=item on_refresh_end $term
283 306
284Called just after the screen gets redrawn. See C<on_refresh_begin>. 307Called just after the screen gets redrawn. See C<on_refresh_begin>.
285 308
309=item on_action $term, $string
310
311Called whenever an action is invoked for the corresponding extension
312(e.g. via a C<extension:string> builtin action bound to a key, see
313description of the B<keysym> resource in the urxvt(1) manpage). The
314event is simply the action string. Note that an action event is always
315associated to a single extension.
316
286=item on_user_command $term, $string *DEPRECATED* 317=item on_user_command $term, $string *DEPRECATED*
287 318
288Called whenever a user-configured event is being activated (e.g. via 319Called 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> 320a C<perl:string> action bound to a key, see description of the B<keysym>
290resource in the urxvt(1) manpage). 321resource in the urxvt(1) manpage).
291 322
292The event is simply the action string. This interface is going away in 323The event is simply the action string. This interface is going away in
293preference to the C<< ->register_keysym_action >> method. 324preference 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>.
301 325
302=item on_resize_all_windows $term, $new_width, $new_height 326=item on_resize_all_windows $term, $new_width, $new_height
303 327
304Called just after the new window size has been calculated, but before 328Called just after the new window size has been calculated, but before
305windows are actually being resized or hints are being set. If this hook 329windows are actually being resized or hints are being set. If this hook
562no warnings 'utf8'; 586no warnings 'utf8';
563 587
564sub parse_resource { 588sub parse_resource {
565 my ($term, $name, $isarg, $longopt, $flag, $value) = @_; 589 my ($term, $name, $isarg, $longopt, $flag, $value) = @_;
566 590
567 $name =~ y/-/./ if $isarg;
568
569 $term->scan_meta; 591 $term->scan_extensions;
570 592
571 my $r = $term->{meta}{resource}; 593 my $r = $term->{meta}{resource};
572 keys %$r; # reset iterator 594 keys %$r; # reset iterator
573 while (my ($pattern, $v) = each %$r) { 595 while (my ($k, $v) = each %$r) {
574 if ( 596 my $pattern = $k;
597 $pattern =~ y/./-/ if $isarg;
598 my $prefix = $name;
599 my $suffix;
575 $pattern =~ /\.$/ 600 if ($pattern =~ /\-$/) {
576 ? $pattern eq substr $name, 0, length $pattern 601 $prefix = substr $name, 0, length $pattern;
577 : $pattern eq $name 602 $suffix = substr $name, length $pattern;
578 ) { 603 }
604 if ($pattern eq $prefix) {
579 $name = "$urxvt::RESCLASS.$name"; 605 $name = "$urxvt::RESCLASS.$k$suffix";
580 606
581 push @{ $term->{perl_ext_3} }, $v->[0]; 607 push @{ $term->{perl_ext_3} }, $v->[0];
582 608
583 if ($v->[1] eq "boolean") { 609 if ($v->[1] eq "boolean") {
584 $term->put_option_db ($name, $flag ? "true" : "false"); 610 $term->put_option_db ($name, $flag ? "true" : "false");
594} 620}
595 621
596sub usage { 622sub usage {
597 my ($term, $usage_type) = @_; 623 my ($term, $usage_type) = @_;
598 624
599 $term->scan_meta; 625 $term->scan_extensions;
600 626
601 my $r = $term->{meta}{resource}; 627 my $r = $term->{meta}{resource};
602 628
603 for my $pattern (sort keys %$r) { 629 for my $pattern (sort keys %$r) {
604 my ($ext, $type, $desc) = @{ $r->{$pattern} }; 630 my ($ext, $type, $desc) = @{ $r->{$pattern} };
668 my $htype = shift; 694 my $htype = shift;
669 695
670 if ($htype == HOOK_INIT) { 696 if ($htype == HOOK_INIT) {
671 my @dirs = $TERM->perl_libdirs; 697 my @dirs = $TERM->perl_libdirs;
672 698
699 $TERM->scan_extensions;
700
673 my %ext_arg; 701 my %ext_arg;
674 702
675 { 703 {
676 my @init = @TERM_INIT; 704 my @init = @TERM_INIT;
677 @TERM_INIT = (); 705 @TERM_INIT = ();
680 @TERM_EXT = (); 708 @TERM_EXT = ();
681 $TERM->register_package ($_) for @pkg; 709 $TERM->register_package ($_) for @pkg;
682 } 710 }
683 711
684 for ( 712 for (
713 (grep $_, map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2),
685 @{ delete $TERM->{perl_ext_3} }, 714 @{ delete $TERM->{perl_ext_3} }
686 grep $_, map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2
687 ) { 715 ) {
688 if ($_ eq "default") { 716 if ($_ eq "default") {
717
718 $ext_arg{$_} = []
689 $ext_arg{$_} ||= [] for qw(selection option-popup selection-popup searchable-scrollback readline); 719 for qw(selection option-popup selection-popup readline searchable-scrollback);
720
721 for ($TERM->_keysym_resources) {
722 next if /^(?:string|command|builtin|builtin-string|perl)/;
723 next unless /^([A-Za-z0-9_\-]+):/;
724
725 my $ext = $1;
726
727 $ext_arg{$ext} = [];
728 }
729
690 } elsif (/^-(.*)$/) { 730 } elsif (/^-(.*)$/) {
691 delete $ext_arg{$1}; 731 delete $ext_arg{$1};
732
692 } elsif (/^([^<]+)<(.*)>$/) { 733 } elsif (/^([^<]+)<(.*)>$/) {
693 push @{ $ext_arg{$1} }, $2; 734 push @{ $ext_arg{$1} }, $2;
735
694 } else { 736 } else {
695 $ext_arg{$_} ||= []; 737 $ext_arg{$_} ||= [];
696 } 738 }
697 } 739 }
698 740
714 756
715 if (my $cb = $TERM->{_hook}[$htype]) { 757 if (my $cb = $TERM->{_hook}[$htype]) {
716 verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")" 758 verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
717 if $verbosity >= 10; 759 if $verbosity >= 10;
718 760
719 for my $pkg ( 761 if ($htype == HOOK_ACTION) {
720 # this hook is only sent to the extension with the name 762 # this hook is only sent to the extension with the name
721 # matching the first arg 763 # matching the first arg
722 $htype == HOOK_KEYBOARD_DISPATCH 764 my $pkg = shift;
723 ? exists $cb->{"urxvt::ext::$_[0]"} ? "urxvt::ext::" . shift : return undef 765 $pkg =~ y/-/_/;
724 : keys %$cb 766 $pkg = "urxvt::ext::$pkg";
767
768 $cb = $cb->{$pkg}
769 or return undef; #TODO: maybe warn user?
770
771 $cb = { $pkg => $cb };
725 ) { 772 }
773
774 for my $pkg (keys %$cb) {
726 my $retval_ = eval { $cb->{$pkg}->($TERM->{_pkg}{$pkg} || $TERM, @_) }; 775 my $retval_ = eval { $cb->{$pkg}->($TERM->{_pkg}{$pkg} || $TERM, @_) };
727 $retval ||= $retval_; 776 $retval ||= $retval_;
728 777
729 if ($@) { 778 if ($@) {
730 $TERM->ungrab; # better to lose the grab than the session 779 $TERM->ungrab; # better to lose the grab than the session
916 } 965 }
917 966
918 bless \%disable, "urxvt::extension::on_disable" 967 bless \%disable, "urxvt::extension::on_disable"
919} 968}
920 969
970=item $self->bind_action ($hotkey, $action)
971
921=item $self->x_resource ($pattern) 972=item $self->x_resource ($pattern)
922 973
923=item $self->x_resource_boolean ($pattern) 974=item $self->x_resource_boolean ($pattern)
924 975
925These methods support an additional C<%> prefix when called on an 976These methods support an additional C<%> prefix for C<$action> or
926extension object - see the description of these methods in the 977C<$pattern> when called on an extension object, compared to the
978C<urxvt::term> methods of the same name - see the description of these
927C<urxvt::term> class for details. 979methods in the C<urxvt::term> class for details.
928 980
929=cut 981=cut
982
983sub bind_action {
984 my ($self, $hotkey, $action) = @_;
985 $action =~ s/^%:/$_[0]{_name}:/;
986 $self->{term}->bind_action ($hotkey, $action)
987}
930 988
931sub x_resource { 989sub x_resource {
932 my ($self, $name) = @_; 990 my ($self, $name) = @_;
933 $name =~ s/^%(\.|$)/$_[0]{_name}$1/; 991 $name =~ s/^%(\.|$)/$_[0]{_name}$1/;
934 $self->{term}->x_resource ($name) 992 $self->{term}->x_resource ($name)
1069 $ENV{URXVT_PERL_LIB}, 1127 $ENV{URXVT_PERL_LIB},
1070 "$ENV{HOME}/.urxvt/ext", 1128 "$ENV{HOME}/.urxvt/ext",
1071 "$LIBDIR/perl" 1129 "$LIBDIR/perl"
1072} 1130}
1073 1131
1074sub scan_meta { 1132# scan for available extensions and collect their metadata
1133sub scan_extensions {
1075 my ($self) = @_; 1134 my ($self) = @_;
1135
1136 return if exists $self->{meta};
1137
1076 my @libdirs = perl_libdirs $self; 1138 my @urxvtdirs = perl_libdirs $self;
1139# my @cpandirs = grep -d, map "$_/URxvt/Ext", @INC;
1077 1140
1078 return if $self->{meta_libdirs} eq join "\x00", @libdirs;
1079
1080 my %meta;
1081
1082 $self->{meta_libdirs} = join "\x00", @libdirs;
1083 $self->{meta} = \%meta; 1141 $self->{meta} = \my %meta;
1084 1142
1085 for my $dir (reverse @libdirs) { 1143 # first gather extensions
1144
1145 my $gather = sub {
1146 my ($dir, $core) = @_;
1147
1086 opendir my $fh, $dir 1148 opendir my $fh, $dir
1087 or next; 1149 or return;
1150
1088 for my $ext (readdir $fh) { 1151 for my $ext (readdir $fh) {
1089 $ext !~ /^\./ 1152 $ext !~ /^\./
1090 and open my $fh, "<", "$dir/$ext"
1091 or next; 1153 or next;
1092 1154
1155 open my $fh, "<", "$dir/$ext"
1156 or next;
1157
1158 -f $fh
1159 or next;
1160
1161 $ext =~ s/\.uext$// or $core
1162 or next;
1163
1164 my %ext = (dir => $dir);
1165
1093 while (<$fh>) { 1166 while (<$fh>) {
1094 if (/^#:META:X_RESOURCE:(.*)/) { 1167 if (/^#:META:(?:X_)?RESOURCE:(.*)/) {
1095 my ($pattern, $type, $desc) = split /:/, $1; 1168 my ($pattern, $type, $desc) = split /:/, $1;
1096 $pattern =~ s/^%(\.|$)/$ext$1/g; # % in pattern == extension name 1169 $pattern =~ s/^%(\.|$)/$ext$1/g; # % in pattern == extension name
1097 if ($pattern =~ /[^a-zA-Z0-9\-\.]/) { 1170 if ($pattern =~ /[^a-zA-Z0-9\-\.]/) {
1098 warn "$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";
1099 } else { 1172 } else {
1100 $meta{resource}{$pattern} = [$ext, $type, $desc]; 1173 $ext{resource}{$pattern} = [$ext, $type, $desc];
1101 } 1174 }
1102 } elsif (/^\s*(?:#|$)/) { 1175 } elsif (/^\s*(?:#|$)/) {
1103 # skip other comments and empty lines 1176 # skip other comments and empty lines
1104 } else { 1177 } else {
1105 last; # stop parsing on first non-empty non-comment line 1178 last; # stop parsing on first non-empty non-comment line
1106 } 1179 }
1107 } 1180 }
1181
1182 $meta{ext}{$ext} = \%ext;
1108 } 1183 }
1184 };
1185
1186# $gather->($_, 0) for @cpandirs;
1187 $gather->($_, 1) for @urxvtdirs;
1188
1189 # and now merge resources
1190
1191 $meta{resource} = \my %resource;
1192
1193 while (my ($k, $v) = each %{ $meta{ext} }) {
1194 #TODO: should check for extensions overriding each other
1195 %resource = (%resource, %{ $v->{resource} });
1109 } 1196 }
1110} 1197}
1111 1198
1112=item $term = new urxvt::term $envhashref, $rxvtname, [arg...] 1199=item $term = new urxvt::term $envhashref, $rxvtname, [arg...]
1113 1200
1229Returns the X-Resource for the given pattern, excluding the program or 1316Returns the X-Resource for the given pattern, excluding the program or
1230class name, i.e. C<< $term->x_resource ("boldFont") >> should return the 1317class name, i.e. C<< $term->x_resource ("boldFont") >> should return the
1231same value as used by this instance of rxvt-unicode. Returns C<undef> if no 1318same value as used by this instance of rxvt-unicode. Returns C<undef> if no
1232resource with that pattern exists. 1319resource with that pattern exists.
1233 1320
1234Extensions that define extra resource or command line arguments also need 1321Extensions that define extra resources also need to call this method
1235to call this method to access their values. 1322to access their values.
1236 1323
1237If the method is called on an extension object (basically, from an 1324If the method is called on an extension object (basically, from an
1238extension), then the special prefix C<%.> will be replaced by the name of 1325extension), then the special prefix C<%.> will be replaced by the name of
1239the extension and a dot, and the lone string C<%> will be replaced by the 1326the extension and a dot, and the lone string C<%> will be replaced by the
1240extension name itself. This makes it possible to code extensions so you 1327extension name itself. This makes it possible to code extensions so you
1241can rename them and get a new set of commandline switches and resources 1328can rename them and get a new set of resources without having to change
1242without having to change the actual code. 1329the actual code.
1243 1330
1244This method should only be called during the C<on_start> hook, as there is 1331This method should only be called during the C<on_start> hook, as there is
1245only one resource database per display, and later invocations might return 1332only one resource database per display, and later invocations might return
1246the wrong resources. 1333the wrong resources.
1247 1334
1259 my $res = &x_resource; 1346 my $res = &x_resource;
1260 1347
1261 $res =~ /^\s*(?:true|yes|on|1)\s*$/i ? 1 : defined $res && 0 1348 $res =~ /^\s*(?:true|yes|on|1)\s*$/i ? 1 : defined $res && 0
1262} 1349}
1263 1350
1264=item $success = $term->parse_keysym ($key, $octets) 1351=item $action = $term->lookup_keysym ($keysym, $state)
1265 1352
1353Returns the action bound to key combination C<($keysym, $state)>,
1354if a binding for it exists, and C<undef> otherwise.
1355
1356=item $success = $term->bind_action ($key, $action)
1357
1266Adds a key binding exactly as specified via a resource. See the 1358Adds a key binding exactly as specified via a C<keysym> resource. See the
1267C<keysym> resource in the urxvt(1) manpage. 1359C<keysym> resource in the urxvt(1) manpage.
1268 1360
1269=item $term->register_command ($keysym, $modifiermask, $string) 1361To add default bindings for actions, an extension should call C<<
1362->bind_action >> in its C<init> hook for every such binding. Doing it
1363in the C<init> hook allows users to override or remove the binding
1364again.
1270 1365
1271Adds a key binding. This is a lower level api compared to 1366Example: the C<searchable-scrollback> by default binds itself
1272C<parse_keysym>, as it expects a parsed key description, and can be 1367on C<Meta-s>, using C<< $self->bind_action >>, which calls C<<
1273used only inside either the C<on_init> hook, to add a binding, or the 1368$term->bind_action >>.
1274C<on_register_command> hook, to modify a parsed binding. 1369
1370 sub init {
1371 my ($self) = @_;
1372
1373 $self->bind_action ("M-s" => "%:start");
1374 }
1275 1375
1276=item $rend = $term->rstyle ([$new_rstyle]) 1376=item $rend = $term->rstyle ([$new_rstyle])
1277 1377
1278Return and optionally change the current rendition. Text that is output by 1378Return and optionally change the current rendition. Text that is output by
1279the terminal application will use this style. 1379the terminal application will use this style.
1437 1537
1438=item $term->scr_add_lines ($string) 1538=item $term->scr_add_lines ($string)
1439 1539
1440Write the given text string to the screen, as if output by the application 1540Write the given text string to the screen, as if output by the application
1441running inside the terminal. It may not contain command sequences (escape 1541running inside the terminal. It may not contain command sequences (escape
1442codes), but is free to use line feeds, carriage returns and tabs. The 1542codes - see C<cmd_parse> for that), but is free to use line feeds,
1443string is a normal text string, not in locale-dependent encoding. 1543carriage returns and tabs. The string is a normal text string, not in
1544locale-dependent encoding.
1444 1545
1445Normally its not a good idea to use this function, as programs might be 1546Normally its not a good idea to use this function, as programs might be
1446confused by changes in cursor position or scrolling. Its useful inside a 1547confused by changes in cursor position or scrolling. Its useful inside a
1447C<on_add_lines> hook, though. 1548C<on_add_lines> hook, though.
1448 1549
1456locale-specific encoding of the terminal and can contain command sequences 1557locale-specific encoding of the terminal and can contain command sequences
1457(escape codes) that will be interpreted. 1558(escape codes) that will be interpreted.
1458 1559
1459=item $term->tt_write ($octets) 1560=item $term->tt_write ($octets)
1460 1561
1461Write the octets given in C<$octets> to the tty (i.e. as program input). To 1562Write the octets given in C<$octets> to the tty (i.e. as user input
1563to the program, see C<cmd_parse> for the opposite direction). To pass
1462pass characters instead of octets, you should convert your strings first 1564characters instead of octets, you should convert your strings first to the
1463to the locale-specific encoding using C<< $term->locale_encode >>. 1565locale-specific encoding using C<< $term->locale_encode >>.
1566
1567=item $term->tt_write_user_input ($octets)
1568
1569Like C<tt_write>, but should be used when writing strings in response to
1570the user pressing a key, to invoke the additional actions requested by
1571the user for that case (C<tt_write> doesn't do that).
1572
1573The typical use case would be inside C<on_action> hooks.
1464 1574
1465=item $term->tt_paste ($octets) 1575=item $term->tt_paste ($octets)
1466 1576
1467Write the octets given in C<$octets> to the tty as a paste, converting NL to 1577Write the octets given in C<$octets> to the tty as a paste, converting NL to
1468CR and bracketing the data with control sequences if bracketed paste mode 1578CR and bracketing the data with control sequences if bracketed paste mode
1591Requests a screen refresh. At the next opportunity, rxvt-unicode will 1701Requests a screen refresh. At the next opportunity, rxvt-unicode will
1592compare the on-screen display with its stored representation. If they 1702compare the on-screen display with its stored representation. If they
1593differ, it redraws the differences. 1703differ, it redraws the differences.
1594 1704
1595Used after changing terminal contents to display them. 1705Used after changing terminal contents to display them.
1706
1707=item $term->refresh_check
1708
1709Checks if a refresh has been requested and, if so, schedules one.
1596 1710
1597=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]]) 1711=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])
1598 1712
1599Returns the text of the entire row with number C<$row_number>. Row C<< $term->top_row >> 1713Returns the text of the entire row with number C<$row_number>. Row C<< $term->top_row >>
1600is the topmost terminal line, row C<< $term->nrow-1 >> is the bottommost 1714is the topmost terminal line, row C<< $term->nrow-1 >> is the bottommost

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