--- rxvt-unicode/doc/rxvtperl.3.html 2006/01/03 01:39:56 1.6 +++ rxvt-unicode/doc/rxvtperl.3.html 2006/01/19 19:26:31 1.33 @@ -15,14 +15,19 @@
urxvt
Packageurxvt
Packageurxvt::term
Classurxvt::anyevent
Classurxvt::term
Classurxvt::popup
Classurxvt::timer
Classurxvt::iow
Class+
rxvtperl - rxvt-unicode's embedded perl interpreter
@@ -61,26 +67,62 @@
Everytime a terminal object gets created, scripts specified via the
-perl
resource are loaded and associated with it.
Everytime a terminal object gets created, extension scripts specified via
+the perl
resource are loaded and associated with it.
Scripts are compiled in a 'use strict' and 'use utf8' environment, and thus must be encoded as UTF-8.
Each script will only ever be loaded once, even in rxvtd, where -scripts will be shared (But not enabled) for all terminals.
+scripts will be shared (but not enabled) for all terminals.
This section describes the extensiosn delivered with this version. You can +
This section describes the extensions delivered with this release. You can find them in /opt/rxvt/lib/urxvt/perl/.
You can activate them like this:
rxvt -pe <extensionname>
--quoting-style=shell
.
+A double-click usually selects the word under the cursor, further clicks +will enlarge the selection.
+The selection works by trying to match a number of regexes and displaying +them in increasing order of length. You can add your own regexes by +specifying resources of the form:
++ URxvt.selection.pattern-0: perl-regex + URxvt.selection.pattern-1: perl-regex + ...+
The index number (0, 1...) must not have any holes, and each regex must +contain at least one pair of capturing parentheses, which will be used for +the match. For example, the followign adds a regex that matches everything +between two vertical bars:
++ URxvt.selection.pattern-0: \\|([^|]+)\\|+
You can look at the source of the selection extension to see more +interesting uses, such as parsing a line from beginning to end.
+This extension also offers following bindable keyboard commands:
Other extensions can extend this popup menu by pushing a code reference
+onto @{ $term-
{selection_popup_hook} }>, that is called whenever the
+popup is displayed.
It's sole argument is the popup menu, which can be modified. The selection
+is in $_
, which can be used to decide wether to add something or not.
+It should either return nothing or a string and a code reference. The
+string will be used as button text and the code reference will be called
+when the button gets activated and should transform $_
.
The following will add an entry a to b
that transforms all a
s in
+the selection to b
s, but only if the selection currently contains any
+a
s:
+ push @{ $self->{term}{selection_popup_hook} }, sub { + /a/ ? ("a to be" => sub { s/a/b/g } + : () + };+
M-s
). While in search mode, normal terminal
+input/output is suspended and a regex is displayed at the bottom of the
+screen.
+Inputting characters appends them to the regex and continues incremental
+search. BackSpace
removes a character from the regex, Up
and Down
+search upwards/downwards in the scrollback buffer, End
jumps to the
+bottom. Escape
leaves search mode and returns to the point where search
+was started, while Enter
or Return
stay at the current position and
+additionally stores the first match in the current line into the primary
+selection.
It works by specifying perl snippets (most useful is a single s///
+operator) that modify $_
as resources:
+ URxvt.selection-autotransform.0: transform + URxvt.selection-autotransform.1: transform + ...+
For example, the following will transform selections of the form
+filename:number
, often seen in compiler messages, into vi +$filename
+$word
:
+ URxvt.selection-autotransform.0: s/^([^:[:space:]]+):(\\d+):?$/vi +$2 \\Q$1\\E\\x0d/+
And this example matches the same,but replaces it with vi-commands you can +paste directly into your (vi :) editor:
++ URxvt.selection-autotransform.0: s/^([^:[:space:]]+(\\d+):?$/:e \\Q$1\\E\\x0d:$2\\x0d/+
Of course, this can be modified to suit your needs and your editor :)
+To expand the example above to typical perl error messages (``XXX at +FILENAME line YYY.''), you need a slightly more elaborate solution:
++ URxvt.selection.pattern-0: ( at .*? line \\d+[,.]) + URxvt.selection-autotransform.0: s/^ at (.*?) line (\\d+)[,.]$/:e \\Q$1\E\\x0d:$2\\x0d/+
The first line tells the selection code to treat the unchanging part of +every error message as a selection pattern, and the second line transforms +the message into vi commands to load the file.
+on_line_update
) to underline urls and
+make them clickable. When middle-clicked, the program specified in the
+resource urlLauncher
(default x-www-browser
) will be started with
+the URL as first argument.
++ rxvt -pixmap background.xpm -pe automove-background+
It listens to the selection-pastebin:remote-pastebin
keyboard command,
+i.e.
+ URxvt.keysym.C-M-e: perl:selection-pastebin:remote-pastebin+
Pressing this combination runs a command with %
replaced by the name of
+the textfile. This command can be set via a resource:
+ URxvt.selection-pastebin.cmd: rsync -apP % ruth:/var/www/www.ta-sa.org/files/txt/.+
And the default is likely not useful to anybody but the few people around +here :)
+The name of the textfile is the hex encoded md5 sum of the selection, so +the same content should lead to the same filename.
+After a successful upload the selection will be replaced by the text given
+in the selection-pastebin-url
resource (again, the % is the placeholder
+for the filename):
+ URxvt.selection-pastebin.url: http://www.ta-sa.org/files/txt/%
+
+
All objects (such as terminals, time watchers etc.) are typical
reference-to-hash objects. The hash can be used to store anything you
like. All members starting with an underscore (such as _ptr
or
-_hook
) are reserved for internal uses and must not be accessed or
+_hook
) are reserved for internal uses and MUST NOT be accessed or
modified).
When objects are destroyed on the C++ side, the perl object hashes are emptied, so its best to store related objects such as time watchers and the like inside the terminal object so they get destroyed as soon as the terminal is destroyed.
+Argument names also often indicate the type of a parameter. Here are some +hints on what they mean:
++
+Very perl extension is a perl class. A separate perl object is created
+for each terminal and each extension and passed as the first parameter to
+hooks. So extensions can use their $self
object without having to think
+about other extensions, with the exception of methods and members that
+begin with an underscore character _
: these are reserved for internal
+use.
Although it isn't a urxvt::term
object, you can call all methods of the
+urxvt::term
class on this object.
It has the following methods and data members:
+urxvt::term
object associated with this instance of the
+extension. This member must not be changed in any way.
+on_
prefix) for
+this extension, replacing any previous hook. This is useful when you want
+to overwrite time-critical hooks only temporarily.
+
The following subroutines can be declared in loaded scripts, and will be called -whenever the relevant event happens.
-All of them must return a boolean value. If it is true, then the event -counts as being consumed, and the invocation of other hooks is skipped, -and the relevant action might not be carried out by the C++ code.
-When in doubt, return a false value (preferably ()
).
The following subroutines can be declared in extension files, and will be +called whenever the relevant event happens.
+The first argument passed to them is an extension oject as described in
+the in the Extension Objects
section.
All of these hooks must return a boolean value. If it is true, then the +event counts as being consumed, and the invocation of other hooks is +skipped, and the relevant action might not be carried out by the C++ code.
+When in doubt, return a false value (preferably ()
). >
fork
ed.
+$status
is the status
+from waitpid
.
+Returning a true value aborts selection grabbing. It will still be hilighted.
See the selection example extension.
Be careful not ever to trust (in a security sense) the data you receive, +as its source can not easily be controleld (e-mail content, messages from +other users on the same system etc.).
+$term->scr_add_lines
yourself. Please note that this
+might be very slow, however, as your hook is called for all text being
+output.
+program(s)
running in the urxvt window send output.
+Called whenever a line was updated or changed. Can be used to filter
+screen output (e.g. underline urls or other useless stuff). Only lines
+that are being shown will be filtered, and, due to performance reasons,
+not always immediately.
+The row number is always the topmost row of the line if the line spans +multiple rows.
+Please note that, if you change the line, then the hook might get called +later with the already-modified line (e.g. if unrelated parts change), so +you cannot just toggle rendition bits, but only set them.
perl:string
action bound to it (see description of the keysym
resource in the rxvt(1)
manpage).
+
+The event is a hash with most values as named by Xlib (see the XEvent
+manpage), with the additional members row
and col
, which are the row
+and column under the mouse cursor.
on_key_press
additionally receives the string rxvt-unicode would
+output, if any, in locale-specific encoding.
subwindow.
++
+urxvt
Packageurxvt
.
+urxvt::term
+object, whenever a callback/hook is executing.
+@@ -261,17 +693,172 @@
Using this function has the advantage that its output ends up in the correct place, e.g. on stderr of the connecting urxvtc client.
+Messages have a size limit of 1023 bytes currently.
++
Rendition bitsets contain information about colour, font, font styles and +similar information for each screen cell.
+The following ``macros'' deal with changes in rendition sets. You should +never just create a bitset, you should always modify an existing one, +as they contain important information required for correct operation of +rxvt-unicode.
++
+urxvt::anyevent
ClassThe sole purpose of this class is to deliver an interface to the
+AnyEvent
module - any module using it will work inside urxvt without
+further programming. The only exception is that you cannot wait on
+condition variables, but non-blocking condvar use is ok. What this means
+is that you cannot use blocking APIs, but the non-blocking variant should
+work.
+
urxvt::term
Class$rxvtname, arg...
. $envhashref
must be a reference to a %ENV
-like
+hash which defines the environment of the new terminal.
+Croaks (and probably outputs an error message) if the new instance
+couldn't be created. Returns undef
if the new instance didn't
+initialise perl, and the terminal object otherwise. The init
and
+start
hooks will be called during this call.
fork
/exec
builtins, which executes
+(``starts'') programs in the background. This function takes care of setting
+the user environment before exec'ing the command (e.g. PATH
) and should
+be preferred over explicit calls to exec
or system
.
+Returns the pid of the subprocess or undef
on error.
$optval
is enabled, and
+optionally change it. All option values are stored by name in the hash
+%urxvt::OPTION
. Options not enabled in this binary are not in the hash.
+Here is a a likely non-exhaustive list of option names, please see the +source file /src/optinc.h to see the actual list:
++ borderLess console cursorBlink cursorUnderline hold iconic insecure + intensityStyles jumpScroll loginShell mapAlert meta8 mouseWheelScrollPage + override-redirect pastableTabs pointerBlank reverseVideo scrollBar + scrollBar_floating scrollBar_right scrollTtyKeypress scrollTtyOutput + scrollWithBuffer secondaryScreen secondaryScroll skipBuiltinGlyphs + transparent tripleclickwords utmpInhibit visualBell+
Here is a a likely non-exhaustive list of resource names, not all of which -are supported in every build, please see the source to see the actual -list:
+are supported in every build, please see the source file /src/rsinc.h +to see the actual list:@@ -304,14 +891,50 @@ borderLess color cursorBlink cursorUnderline cutchars delete_key display_name embed ext_bwidth fade font geometry hold iconName imFont imLocale inputMethod insecure int_bwidth intensityStyles - italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier - mouseWheelScrollPage name pastableTabs path perl_eval perl_ext - perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd - reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating - scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput - scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle - shade term_name title transparent transparent_all tripleclickwords - utmpInhibit visualBell+ italicFont jumpScroll lineSpace loginShell mapAlert meta8 modifier + mouseWheelScrollPage name override_redirect pastableTabs path perl_eval + perl_ext_1 perl_ext_2 perl_lib pointerBlank pointerBlankDelay + preeditType print_pipe pty_fd reverseVideo saveLines scrollBar + scrollBar_align scrollBar_floating scrollBar_right scrollBar_thickness + scrollTtyKeypress scrollTtyOutput scrollWithBuffer scrollstyle + secondaryScreen secondaryScroll selectstyle shade term_name title + transient_for transparent transparent_all tripleclickwords utmpInhibit + visualBell +
$term->x_resource ("boldFont")
should return the
+same value as used by this instance of rxvt-unicode. Returns undef
if no
+resource with that pattern exists.
+This method should only be called during the on_start
hook, as there is
+only one resource database per display, and later invocations might return
+the wrong resources.
keysym
resource in the rxvt(1)
manpage.
+selection_beg
and
+selection_end
. If $rectangular
is true (default: false), a
+rectangular selection will be made. This is the prefered function to make
+a selection.
+on_sel_grab
hooks.
$newtext
.
-$x
or
-$y
is negative, then this is counted from the right/bottom side,
-respectively.
+width/height. $rstyle
defines the initial rendition style
+(default: OVERLAY_RSTYLE
).
If $border
is 2
(default), then a decorative border will be put
+around the box.
If either $x
or $y
is negative, then this is counted from the
+right/bottom side, respectively.
This method returns an urxvt::overlay object. The overlay will be visible +as long as the perl object is referenced.
+The methods currently supported on urxvt::overlay
objects are:
$term->ROW_t
and $term->ROW_r
in that it puts
+text in rxvt-unicode's special encoding and an array of rendition values
+at a specific position inside the overlay.
urxvt::popup
object that implements a popup menu. The
+$event
must be the event causing the menu to pop up (a button event,
+currently).
RS_RVid
), which MUST NOT contain font styles. Useful in
+refresh hooks to provide effects similar to the selection.
+scr_xor_span
, but xors a rectangle instead. Trailing
+whitespace will additionally be xored with the $rstyle2
, which defaults
+to RS_RVid | RS_Uline
, which removes reverse video again and underlines
+it instead. Both styles MUST NOT contain font styles.
+Normally its not a good idea to use this function, as programs might be
+confused by changes in cursor position or scrolling. Its useful inside a
+on_add_lines
hook, though.
scr_add_lines
, but the argument must be in the
+locale-specific encoding of the terminal and can contain command sequences
+(escape codes) that will be interpreted.
+$term->locale_encode
.
urxvt::timer->events
. Make sure to always restore
+the previous value.
+-geometry
, excluding any scrollback).
+Return the window id of the terminal window.
+ $term->vt_emask_add (urxvt::PointerMotionMask);+
\%ENV
.
+0
, which displays the normal terminal contents. Larger values scroll
+Returns the row number of the topmost displayed line. Maximum value is
+0
, which displays the normal terminal contents. Lower values scroll
this many lines into the scrollback buffer.
$row_number
. Row 0
is the topmost terminal line, row $term->$ncol-1
is the bottommost
terminal line. The scrollback buffer starts at line -1
and extends to
-line -$term->nsaved
.
+line -$term->nsaved
. Nothing will be returned if a nonexistent line
+is requested.
If $new_text
is specified, it will replace characters in the current
line, starting at column $start_col
(default 0
), which is useful
-to replace only parts of a line. The font iindex in the rendition will
+to replace only parts of a line. The font index in the rendition will
automatically be updated.
$text
is in a special encoding: tabs and wide characters that use more
+
$text
is in a special encoding: tabs and wide characters that use more
than one cell when displayed are padded with urxvt::NOCHAR characters
(chr 65535
). Characters with combining characters and other characters
that do not fit into the normal tetx encoding will be replaced with
@@ -475,17 +1252,74 @@
When setting rendition, the font mask will be ignored.
See the section on RENDITION, below.
+See the section on RENDITION, above.
-1
, then the line is part of a multiple-row logical ``line'', which
-means all characters are in use and it is continued on the next row.
+Returns the number of screen cells that are in use (``the line
+length''). Unlike the urxvt core, this returns $term->ncol
if the
+line is joined with the following one.
+urxvt::line
object that stores information
+about the logical line that row $row_number
is part of. It supports the
+following methods:
+ROW_t
+ROW_r
+ROW_l
.
+$term->ROW_t
for details.
$sync
is true). Also remembers the grab timestampe.
+-
Rendition bitsets contain information about colour, font, font styles and -similar information for each screen cell.
-The following ``macros'' deal with changes in rendition sets. You should -never just create a bitset, you should always modify an existing one, -as they contain important information required for correct operation of -rxvt-unicode.
+urxvt::popup
Class$sepchr
.
+$cb
is called whenever it is
+selected.
+@@ -524,22 +1418,20 @@
This class implements timer watchers/events. Time is represented as a fractional number of seconds since the epoch. Example:
- # create a digital clock display in upper right corner + $term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0); $term->{timer} = urxvt::timer ->new - ->start (urxvt::NOW) + ->interval (1) ->cb (sub { - my ($timer) = @_; - my $time = $timer->at; - $timer->start ($time + 1); - $self->scr_overlay (-1, 0, - POSIX::strftime "%H:%M:%S", localtime $time); + $term->{overlay}->set (0, 0, + sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]); });
$interval
is 0
), the timer will automatically
+stop after it has fired once. If $interval
is non-zero, then the timer
+is automatically rescheduled at the given intervals.
+$tstamp
and start the timer.
start
, but sets the expiry timer to c<urxvt::NOW + $delay>.
+1
) enables watching for read
-data, Bit #1 (value 2
) enables watching for write data.
+Set the event mask to watch. The only allowed values are
+urxvt::EVENT_READ
and urxvt::EVENT_WRITE
, which might be ORed
+together, or urxvt::EVENT_NONE
.
This variable controls the verbosity level of the perl extension. Higher numbers indicate more verbose output.
- +