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Revision 1.231 by root, Sun Apr 27 20:26:28 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, $new_height
303 328
304Called just after the new window size has been calculated, but before 329Called just after the new window size has been calculated, but before
305windows are actually being resized or hints are being set. If this hook 330windows are actually being resized or hints are being set. If this hook
562no warnings 'utf8'; 587no warnings 'utf8';
563 588
564sub parse_resource { 589sub parse_resource {
565 my ($term, $name, $isarg, $longopt, $flag, $value) = @_; 590 my ($term, $name, $isarg, $longopt, $flag, $value) = @_;
566 591
567 $name =~ y/-/./ if $isarg;
568
569 $term->scan_meta; 592 $term->scan_extensions;
570 593
571 my $r = $term->{meta}{resource}; 594 my $r = $term->{meta}{resource};
572 keys %$r; # reset iterator 595 keys %$r; # reset iterator
573 while (my ($pattern, $v) = each %$r) { 596 while (my ($k, $v) = each %$r) {
574 if ( 597 my $pattern = $k;
598 $pattern =~ y/./-/ if $isarg;
599 my $prefix = $name;
600 my $suffix;
575 $pattern =~ /\.$/ 601 if ($pattern =~ /\-$/) {
576 ? $pattern eq substr $name, 0, length $pattern 602 $prefix = substr $name, 0, length $pattern;
577 : $pattern eq $name 603 $suffix = substr $name, length $pattern;
578 ) { 604 }
605 if ($pattern eq $prefix) {
579 $name = "$urxvt::RESCLASS.$name"; 606 $name = "$urxvt::RESCLASS.$k$suffix";
580 607
581 push @{ $term->{perl_ext_3} }, $v->[0]; 608 push @{ $term->{perl_ext_3} }, $v->[0];
582 609
583 if ($v->[1] eq "boolean") { 610 if ($v->[1] eq "boolean") {
584 $term->put_option_db ($name, $flag ? "true" : "false"); 611 $term->put_option_db ($name, $flag ? "true" : "false");
594} 621}
595 622
596sub usage { 623sub usage {
597 my ($term, $usage_type) = @_; 624 my ($term, $usage_type) = @_;
598 625
599 $term->scan_meta; 626 $term->scan_extensions;
600 627
601 my $r = $term->{meta}{resource}; 628 my $r = $term->{meta}{resource};
602 629
603 for my $pattern (sort keys %$r) { 630 for my $pattern (sort keys %$r) {
604 my ($ext, $type, $desc) = @{ $r->{$pattern} }; 631 my ($ext, $type, $desc) = @{ $r->{$pattern} };
668 my $htype = shift; 695 my $htype = shift;
669 696
670 if ($htype == HOOK_INIT) { 697 if ($htype == HOOK_INIT) {
671 my @dirs = $TERM->perl_libdirs; 698 my @dirs = $TERM->perl_libdirs;
672 699
700 $TERM->scan_extensions;
701
673 my %ext_arg; 702 my %ext_arg;
674 703
675 { 704 {
676 my @init = @TERM_INIT; 705 my @init = @TERM_INIT;
677 @TERM_INIT = (); 706 @TERM_INIT = ();
680 @TERM_EXT = (); 709 @TERM_EXT = ();
681 $TERM->register_package ($_) for @pkg; 710 $TERM->register_package ($_) for @pkg;
682 } 711 }
683 712
684 for ( 713 for (
714 (grep $_, map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2),
685 @{ delete $TERM->{perl_ext_3} }, 715 @{ delete $TERM->{perl_ext_3} }
686 grep $_, map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2
687 ) { 716 ) {
688 if ($_ eq "default") { 717 if ($_ eq "default") {
718
719 $ext_arg{$_} = []
689 $ext_arg{$_} ||= [] 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
690 } elsif (/^-(.*)$/) { 731 } elsif (/^-(.*)$/) {
691 delete $ext_arg{$1}; 732 delete $ext_arg{$1};
733
692 } elsif (/^([^<]+)<(.*)>$/) { 734 } elsif (/^([^<]+)<(.*)>$/) {
693 push @{ $ext_arg{$1} }, $2; 735 push @{ $ext_arg{$1} }, $2;
736
694 } else { 737 } else {
695 $ext_arg{$_} ||= []; 738 $ext_arg{$_} ||= [];
696 } 739 }
697 } 740 }
698 741
714 757
715 if (my $cb = $TERM->{_hook}[$htype]) { 758 if (my $cb = $TERM->{_hook}[$htype]) {
716 verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")" 759 verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
717 if $verbosity >= 10; 760 if $verbosity >= 10;
718 761
719 for my $pkg ( 762 if ($htype == HOOK_ACTION) {
720 # this hook is only sent to the extension with the name 763 # this hook is only sent to the extension with the name
721 # matching the first arg 764 # matching the first arg
722 $htype == HOOK_KEYBOARD_DISPATCH 765 my $pkg = shift;
723 ? exists $cb->{"urxvt::ext::$_[0]"} ? "urxvt::ext::" . shift : return undef 766 $pkg =~ y/-/_/;
724 : keys %$cb 767 $pkg = "urxvt::ext::$pkg";
768
769 $cb = $cb->{$pkg}
770 or return undef; #TODO: maybe warn user?
771
772 $cb = { $pkg => $cb };
725 ) { 773 }
774
775 for my $pkg (keys %$cb) {
726 my $retval_ = eval { $cb->{$pkg}->($TERM->{_pkg}{$pkg} || $TERM, @_) }; 776 my $retval_ = eval { $cb->{$pkg}->($TERM->{_pkg}{$pkg} || $TERM, @_) };
727 $retval ||= $retval_; 777 $retval ||= $retval_;
728 778
729 if ($@) { 779 if ($@) {
730 $TERM->ungrab; # better to lose the grab than the session 780 $TERM->ungrab; # better to lose the grab than the session
916 } 966 }
917 967
918 bless \%disable, "urxvt::extension::on_disable" 968 bless \%disable, "urxvt::extension::on_disable"
919} 969}
920 970
971=item $self->bind_action ($hotkey, $action)
972
921=item $self->x_resource ($pattern) 973=item $self->x_resource ($pattern)
922 974
923=item $self->x_resource_boolean ($pattern) 975=item $self->x_resource_boolean ($pattern)
924 976
925These methods support an additional C<%> prefix when called on an 977These methods support an additional C<%> prefix for C<$action> or
926extension object - see the description of these methods in the 978C<$pattern> when called on an extension object, compared to the
979C<urxvt::term> methods of the same name - see the description of these
927C<urxvt::term> class for details. 980methods in the C<urxvt::term> class for details.
928 981
929=cut 982=cut
983
984sub bind_action {
985 my ($self, $hotkey, $action) = @_;
986 $action =~ s/^%:/$_[0]{_name}:/;
987 $self->{term}->bind_action ($hotkey, $action)
988}
930 989
931sub x_resource { 990sub x_resource {
932 my ($self, $name) = @_; 991 my ($self, $name) = @_;
933 $name =~ s/^%(\.|$)/$_[0]{_name}$1/; 992 $name =~ s/^%(\.|$)/$_[0]{_name}$1/;
934 $self->{term}->x_resource ($name) 993 $self->{term}->x_resource ($name)
1069 $ENV{URXVT_PERL_LIB}, 1128 $ENV{URXVT_PERL_LIB},
1070 "$ENV{HOME}/.urxvt/ext", 1129 "$ENV{HOME}/.urxvt/ext",
1071 "$LIBDIR/perl" 1130 "$LIBDIR/perl"
1072} 1131}
1073 1132
1074sub scan_meta { 1133# scan for available extensions and collect their metadata
1134sub scan_extensions {
1075 my ($self) = @_; 1135 my ($self) = @_;
1136
1137 return if exists $self->{meta};
1138
1076 my @libdirs = perl_libdirs $self; 1139 my @libdirs = perl_libdirs $self;
1077 1140
1078 return if $self->{meta_libdirs} eq join "\x00", @libdirs; 1141# return if $self->{meta_libdirs} eq join "\x00", @libdirs;#d#
1079 1142
1080 my %meta;
1081
1082 $self->{meta_libdirs} = join "\x00", @libdirs; 1143# $self->{meta_libdirs} = join "\x00", @libdirs;#d#
1083 $self->{meta} = \%meta; 1144 $self->{meta} = \my %meta;
1084 1145
1146 # first gather extensions
1085 for my $dir (reverse @libdirs) { 1147 for my $dir (reverse @libdirs) {
1086 opendir my $fh, $dir 1148 opendir my $fh, $dir
1087 or next; 1149 or next;
1088 for my $ext (readdir $fh) { 1150 for my $ext (readdir $fh) {
1089 $ext !~ /^\./ 1151 $ext !~ /^\./
1090 and open my $fh, "<", "$dir/$ext" 1152 and open my $fh, "<", "$dir/$ext"
1091 or next; 1153 or next;
1092 1154
1155 my %ext = (dir => $dir);
1156
1093 while (<$fh>) { 1157 while (<$fh>) {
1094 if (/^#:META:X_RESOURCE:(.*)/) { 1158 if (/^#:META:(?:X_)?RESOURCE:(.*)/) {
1095 my ($pattern, $type, $desc) = split /:/, $1; 1159 my ($pattern, $type, $desc) = split /:/, $1;
1096 $pattern =~ s/^%(\.|$)/$ext$1/g; # % in pattern == extension name 1160 $pattern =~ s/^%(\.|$)/$ext$1/g; # % in pattern == extension name
1097 if ($pattern =~ /[^a-zA-Z0-9\-\.]/) { 1161 if ($pattern =~ /[^a-zA-Z0-9\-\.]/) {
1098 warn "$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";
1099 } else { 1163 } else {
1100 $meta{resource}{$pattern} = [$ext, $type, $desc]; 1164 $ext{resource}{$pattern} = [$ext, $type, $desc];
1101 } 1165 }
1102 } elsif (/^\s*(?:#|$)/) { 1166 } elsif (/^\s*(?:#|$)/) {
1103 # skip other comments and empty lines 1167 # skip other comments and empty lines
1104 } else { 1168 } else {
1105 last; # stop parsing on first non-empty non-comment line 1169 last; # stop parsing on first non-empty non-comment line
1106 } 1170 }
1107 } 1171 }
1172
1173 $meta{ext}{$ext} = \%ext;
1108 } 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} });
1109 } 1181 }
1110} 1182}
1111 1183
1112=item $term = new urxvt::term $envhashref, $rxvtname, [arg...] 1184=item $term = new urxvt::term $envhashref, $rxvtname, [arg...]
1113 1185
1229Returns the X-Resource for the given pattern, excluding the program or 1301Returns the X-Resource for the given pattern, excluding the program or
1230class name, i.e. C<< $term->x_resource ("boldFont") >> should return the 1302class 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 1303same value as used by this instance of rxvt-unicode. Returns C<undef> if no
1232resource with that pattern exists. 1304resource with that pattern exists.
1233 1305
1234Extensions that define extra resource or command line arguments also need 1306Extensions that define extra resources also need to call this method
1235to call this method to access their values. 1307to access their values.
1236 1308
1237If the method is called on an extension object (basically, from an 1309If the method is called on an extension object (basically, from an
1238extension), 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
1239the 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
1240extension name itself. This makes it possible to code extensions so you 1312extension name itself. This makes it possible to code extensions so you
1241can 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
1242without having to change the actual code. 1314the actual code.
1243 1315
1244This 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
1245only one resource database per display, and later invocations might return 1317only one resource database per display, and later invocations might return
1246the wrong resources. 1318the wrong resources.
1247 1319
1259 my $res = &x_resource; 1331 my $res = &x_resource;
1260 1332
1261 $res =~ /^\s*(?:true|yes|on|1)\s*$/i ? 1 : defined $res && 0 1333 $res =~ /^\s*(?:true|yes|on|1)\s*$/i ? 1 : defined $res && 0
1262} 1334}
1263 1335
1264=item $success = $term->parse_keysym ($key, $octets) 1336=item $success = $term->bind_action ($key, $action)
1265 1337
1266Adds 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
1267C<keysym> resource in the urxvt(1) manpage. 1339C<keysym> resource in the urxvt(1) manpage.
1268 1340
1269=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.
1270 1345
1271Adds a key binding. This is a lower level api compared to 1346Example: the C<searchable-scrollback> by default binds itself
1272C<parse_keysym>, as it expects a parsed key description, and can be 1347on C<Meta-s>, using C<< $self->bind_action >>, which calls C<<
1273used only inside either the C<on_init> hook, to add a binding, or the 1348$term->bind_action >>.
1274C<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 }
1275 1355
1276=item $rend = $term->rstyle ([$new_rstyle]) 1356=item $rend = $term->rstyle ([$new_rstyle])
1277 1357
1278Return and optionally change the current rendition. Text that is output by 1358Return and optionally change the current rendition. Text that is output by
1279the terminal application will use this style. 1359the terminal application will use this style.
1437 1517
1438=item $term->scr_add_lines ($string) 1518=item $term->scr_add_lines ($string)
1439 1519
1440Write 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
1441running inside the terminal. It may not contain command sequences (escape 1521running inside the terminal. It may not contain command sequences (escape
1442codes), 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,
1443string 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.
1444 1525
1445Normally 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
1446confused by changes in cursor position or scrolling. Its useful inside a 1527confused by changes in cursor position or scrolling. Its useful inside a
1447C<on_add_lines> hook, though. 1528C<on_add_lines> hook, though.
1448 1529
1456locale-specific encoding of the terminal and can contain command sequences 1537locale-specific encoding of the terminal and can contain command sequences
1457(escape codes) that will be interpreted. 1538(escape codes) that will be interpreted.
1458 1539
1459=item $term->tt_write ($octets) 1540=item $term->tt_write ($octets)
1460 1541
1461Write 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
1462pass characters instead of octets, you should convert your strings first 1544characters instead of octets, you should convert your strings first to the
1463to 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.
1464 1554
1465=item $term->tt_paste ($octets) 1555=item $term->tt_paste ($octets)
1466 1556
1467Write 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
1468CR 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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