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+#REDIRECT [[MusicBrainz Picard]]
-This page describes a simple scripting language implemented in [[Picard Qt|PicardQt]].
-==Syntax==
-The syntax is derived from [http://wiki.hydrogenaudio.org/index.php?title=Foobar2000:Titleformat_Reference Foobar2000's titleformat]. There are three base elements: '''text''', '''variable''' and '''function'''. Variables consist of alpha-numeric characters enclosed in percent signs (e.g. <code><nowiki>%artist%</nowiki></code>). Functions start with a dollar sign and end with an argument list enclosed in parentheses (e.g. <code><nowiki>$lower(...)</nowiki></code>).
-To use parenthesis or commas as-is inside a function call you must escape them with a backslash.
-==Metadata Variables==
-See [[Picard Tags|PicardTags]] for list of variables available in [[Tagger Script|TaggerScript]].
-==Technical Variables==
-===%_extension%===
-* Extension of the file name. For example ''mp3'' for file ''01 Track.mp3''.
-==Functions==
-===$if(if,then,else)===
-* If <code><nowiki>if</nowiki></code> is not empty, it returns <code><nowiki>then</nowiki></code>, otherwise it returns <code><nowiki>else</nowiki></code>.
-===$if2(a1,a2,a3,...)===
-* Returns first non empty argument.
-===$lower(text)===
-* Returns <code><nowiki>text</nowiki></code> in lower case.
-===$upper(text)===
-* Returns <code><nowiki>text</nowiki></code> in upper case.
-===$left(text,num)===
-* Returns first <code><nowiki>num</nowiki></code> characters from <code><nowiki>text</nowiki></code>.
-===$right(text,num)===
-* Returns last <code><nowiki>num</nowiki></code> characters from <code><nowiki>text</nowiki></code>.
-===$num(num,len)===
-* Returns <code><nowiki>num</nowiki></code> formatted to <code><nowiki>len</nowiki></code> digits.
-===$replace(text,search,replace)===
-* Replaces occurrences of <code><nowiki>search</nowiki></code> in <code><nowiki>text</nowiki></code> with value of <code><nowiki>replace</nowiki></code> and returns the resulting string.
-===$rsearch(text,pattern)===
-* [http://docs.python.org/lib/re-syntax.html Regular expression] search. This function will return the first matching group.
-===$rreplace(text,pattern,replace)===
-* [http://docs.python.org/lib/re-syntax.html Regular expression] replace.
-===$in(x,y)===
-* Returns true, if <code><nowiki></nowiki></code>x<code><nowiki></nowiki></code> contains <code><nowiki></nowiki></code>y<code><nowiki></nowiki></code>.
-===$unset(name)===
-* Unsets the variable <code><nowiki></nowiki></code>name<code><nowiki></nowiki></code>.
-===$set(name, value)===
-* Sets the variable <code><nowiki></nowiki></code>name<code><nowiki></nowiki></code> to <code><nowiki></nowiki></code>value<code><nowiki></nowiki></code>.
-===$get(name)===
-* Returns the variable <code><nowiki></nowiki></code>name<code><nowiki></nowiki></code> (equivalent to <code><nowiki></nowiki></code>%name%<code><nowiki></nowiki></code>).
-===$copy(new,old)===
-* Copies metadata from variable <code><nowiki></nowiki></code>old<code><nowiki></nowiki></code> to <code><nowiki></nowiki></code>new<code><nowiki></nowiki></code>. The difference between <code><nowiki></nowiki></code>$set(new,%old%)<code><nowiki></nowiki></code> is that <code><nowiki></nowiki></code>$copy(new,old)<code><nowiki></nowiki></code> copies multi-value variables without flattening them.
-===$trim(text[,char])===
-* Trims all leading and trailing whitespaces from <code><nowiki></nowiki></code>text<code><nowiki></nowiki></code>. The optional second parameter specifies the character to trim.
-===$add(x,y)===
-* Add <code><nowiki></nowiki></code>y<code><nowiki></nowiki></code> to <code><nowiki></nowiki></code>x<code><nowiki></nowiki></code>.
-===$sub(x,y)===
-* Substracts <code><nowiki></nowiki></code>y<code><nowiki></nowiki></code> from <code><nowiki></nowiki></code>x<code><nowiki></nowiki></code>.
-===$div(x,y)===
-* Divides <code><nowiki></nowiki></code>x<code><nowiki></nowiki></code> by <code><nowiki></nowiki></code>y<code><nowiki></nowiki></code>.
-===$mod(x,y)===
-* Returns the remainder of <code><nowiki></nowiki></code>x<code><nowiki></nowiki></code> divided by <code><nowiki></nowiki></code>y<code><nowiki></nowiki></code>.
-===$mul(x,y)===
-* Multiplies <code><nowiki></nowiki></code>x<code><nowiki></nowiki></code> by <code><nowiki></nowiki></code>y<code><nowiki></nowiki></code>.
-===$or(x,y)===
-* Returns true, if either <code><nowiki></nowiki></code>x<code><nowiki></nowiki></code> or <code><nowiki></nowiki></code>y<code><nowiki></nowiki></code> not empty.
-===$and(x,y)===
-* Returns true, if both <code><nowiki></nowiki></code>x<code><nowiki></nowiki></code> and <code><nowiki></nowiki></code>y<code><nowiki></nowiki></code> are not empty.
-===$not(x)===
-* Returns true, if <code><nowiki></nowiki></code>x<code><nowiki></nowiki></code> is empty.
-===$eq(x,y)===
-* Returns true, if <code><nowiki></nowiki></code>x<code><nowiki></nowiki></code> equals <code><nowiki></nowiki></code>y<code><nowiki></nowiki></code>.
-===$ne(x,y)===
-* Returns true, if <code><nowiki></nowiki></code>x<code><nowiki></nowiki></code> not equals <code><nowiki></nowiki></code>y<code><nowiki></nowiki></code>.
-===$lt(x,y)===
-* Returns true, if <code><nowiki></nowiki></code>x<code><nowiki></nowiki></code> is lower than <code><nowiki></nowiki></code>y<code><nowiki></nowiki></code>.
-===$lte(x,y)===
-* Returns true, if <code><nowiki></nowiki></code>x<code><nowiki></nowiki></code> is lower than or equals <code><nowiki></nowiki></code>y<code><nowiki></nowiki></code>.
-===$gt(x,y)===
-* Returns true, if <code><nowiki></nowiki></code>x<code><nowiki></nowiki></code> is greater than <code><nowiki></nowiki></code>y<code><nowiki></nowiki></code>.
-===$gte(x,y)===
-* Returns true, if <code><nowiki></nowiki></code>x<code><nowiki></nowiki></code> is greater than or equals <code><nowiki></nowiki></code>y<code><nowiki></nowiki></code>.
-===$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 <code><nowiki></nowiki></code>pattern<code><nowiki></nowiki></code>, joined by <code><nowiki></nowiki></code>join<code><nowiki></nowiki></code>.
-==Examples==
-===Use case 1: Disc numbers===
-<pre>$set(discnumber,$rsearch(%album%,\\\(disc \(\\d+\)\\\)))
-$set(album,$rreplace(%album%,\\s\\\(disc \\d+\\\),))
-</pre>
-* Would it be possible to trim all of ''(disc 1: Subtitle Here)'' and also set the disc number?  --[[User:AaronCooper|AaronCooper]] (2007-03-07)
-** You can use the plugin from [[Picard Qt/Plugins|PicardQt/Plugins]]. --[[User:LukasLalinsky|LukasLalinsky]]
-*** %totaldiscs% Doesn't really work, is there some way to fix that? --Madness
-===Use case 2: Artist names===
-<pre>$if($search(%album%,(feat. conductor)),
-  $set(artist,%orchestra%))
-</pre>
-* ''Stupid assumption that all classical albums have "feat. conductor" in the title, but it shows the idea. :)''
-===Use case 3: Live tracks on live albums===
-<pre>$if($and($eq(%releasetype%,live),$not($in(%title%,\(live\)))),$set(title,%title% \(live\)))
-</pre>
-===Lower case filenames with underscores===
-<pre>$lower($replace(%albumartist%/%album%/$num(%tracknumber%,2) %title%, ,_))
-</pre>
-===(Year) only if available===
-<pre>$if(%date%,\($left(%date%,4)\))
-</pre>
-===Remove "feat." from track titles===
-<pre>$set(title,$rreplace(%title%,\\s\\\(feat. [^\)]+\\\),))
-</pre>
-===Convert triple-dot to ellipsis===
-<pre>$set(title,$replace(%title%,...,…))
-$set(album,$replace(%album%,...,…))
-</pre>
-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===
-<pre>$if($eq([non-album tracks],%album%),[non-album tracks]/%tracknumber%. %artist% - ,%artist% - $if(%date%, $left(%date%,4) )- %album%/%tracknumber%.)%title%
-</pre>
-Result:
-* Non-Album Tracks: [non-album tracks]/Band Name - Track Name.ext
-* Tracks in releases: Band Name - year - Release Name/##. Track Name.ext
-[[Category:Picard]] [[Category:Development]]

MusicBrainz Picard/Documentation/Scripting: Difference between revisions

Latest revision as of 21:16, 25 November 2014

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