MusicBrainz Picard/Documentation/Scripting: Difference between revisions
((Imported from MoinMoin)) |
(from looking at the source code, this seems to be how the function works (Imported from MoinMoin)) |
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<ul><li style="list-style-type:none">Returns the number of characters in text. |
<ul><li style="list-style-type:none">Returns the number of characters in text. |
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===$performer(pattern="", join=", ")=== |
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<ul><li style="list-style-type:none">Returns the performers where the performance type (e.g. "vocal") matches <code><nowiki></nowiki></code>pattern<code><nowiki></nowiki></code>, joined by <code><nowiki></nowiki></code>join<code><nowiki></nowiki></code>. |
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Revision as of 14:00, 4 September 2008
Scripting in Picard
This page describes a simple scripting language implemented in PicardQt.
Syntax
The syntax is derived from Foobar2000's titleformat. There are three base elements: text, variable and function. Variables consist of alpha-numeric characters enclosed in percent signs (e.g. %artist%
). Functions start with a dollar sign and end with an argument list enclosed in parentheses (e.g. $lower(...)
).
To use parenthesis or commas as-is inside a function call you must escape them with a backslash.
Metadata Variables
See PicardTags for list of variables available in TaggerScript.
Technical Variables
%_extension%
- Extension of the file name. For example mp3 for file 01 Track.mp3.
Functions
$if(if,then,else)
- If
if
is not empty, it returnsthen
, otherwise it returnselse
.
$if2(a1,a2,a3,...)
- Returns first non empty argument.
$lower(text)
- Returns
text
in lower case.
$upper(text)
- Returns
text
in upper case.
$left(text,num)
- Returns first
num
characters fromtext
.
$right(text,num)
- Returns last
num
characters fromtext
.
$num(num,len)
- Returns
num
formatted tolen
digits.
$replace(text,search,replace)
- Returns
replace
in place oftext
, ifsearch
was found intext
.
$rsearch(text,pattern)
- Regular expression search. This function will return the first matching group.
$rreplace(text,pattern,replace)
- Regular expression replace.
$in(x,y)
- Returns true, if
x
contains
y
.
$unset(name)
- Unsets the variable
name
.
$set(name, value)
- Sets the variable
name
to
value
.
$get(name)
- Returns the variable
name
(equivalent to
%name%
).
$copy(new,old)
- Copies metadata from variable
old
to
new
. The difference between
$set(new,%old%)
is that
$copy(new,old)
copies multi-value variables without flattening them.
$trim(text[,char])
- Trims all leading and trailing whitespaces from
text
. The optional second parameter specifies the character to trim.
$add(x,y)
- Add
y
to
x
.
$sub(x,y)
- Substracts
y
from
x
.
$div(x,y)
- Divides
x
by
y
.
$mod(x,y)
- Returns the remainder of
x
divided by
y
.
$mul(x,y)
- Multiplies
x
by
y
.
$or(x,y)
- Returns true, if either
x
or
y
not empty.
$and(x,y)
- Returns true, if both
x
and
y
are not empty.
$not(x)
- Returns true, if
x
is empty.
$eq(x,y)
- Returns true, if
x
equals
y
.
$ne(x,y)
- Returns true, if
x
not equals
y
.
$lt(x,y)
- Returns true, if
x
is lower than
y
.
$lte(x,y)
- Returns true, if
x
is lower than or equals
y
.
$gt(x,y)
- Returns true, if
x
is greater than
y
.
$gte(x,y)
- Returns true, if
x
is greater than or equals
y
.
$noop(...)
- Does nothing (useful for comments or disabling a block of code).
$len(text)
- Returns the number of characters in text.
$performer(pattern="", join=", ")
- Returns the performers where the performance type (e.g. "vocal") matches
pattern
, joined by
join
.
Examples
Use case 1: Disc numbers
$set(discnumber,$rsearch(%album%,\\\(disc \(\\d+\)\\\))) $set(album,$rreplace(%album%,\\s\\\(disc \\d+\\\),))
- Would it be possible to trim all of (disc 1: Subtitle Here) and also set the disc number? --AaronCooper (2007-03-07)
- You can use the plugin from PicardQt/Plugins. --LukasLalinsky
- %totaldiscs% Doesn't really work, is there some way to fix that? --Madness
- You can use the plugin from PicardQt/Plugins. --LukasLalinsky
Use case 2: Artist names
$if($search(%album%,(feat. conductor)), $set(artist,%orchestra%))
- Stupid assumption that all classical albums have "feat. conductor" in the title, but it shows the idea. :)
Use case 3: Live tracks on live albums
$if($and($eq(%releasetype%,live),$not($in(%title%,\(live\)))),$set(title,%title% \(live\)))
Lower case filenames with underscores
$lower($replace(%albumartist%/%album%/$num(%tracknumber%,2) %title%, ,_))
(Year) only if available
$if(%date%,\($left(%date%,4)\))
Remove "feat." from track titles
$set(title,$rreplace(%title%,\\s\\\(feat. [^\)]+\\\),))
Convert triple-dot to ellipsis
$set(title,$replace(%title%,...,…)) $set(album,$replace(%album%,...,…))
This one is useful for people concerned about correct typography and also fixes one problem on Linux: if an album (assuming it's also a directory) is called something like "...for you!", it is considered hidden and therefore might be not accessible from some applications.
Use a different naming pattern for NATs
$if($eq([non-album tracks],%album%),[non-album tracks]/%tracknumber%. %artist% - ,%artist% - $if(%date%, $left(%date%,4) )- %album%/%tracknumber%.)%title%
Result:
- Non-Album Tracks: [non-album tracks]/Band Name - Track Name.ext
- Tracks in releases: Band Name - year - Release Name/##. Track Name.ext