MusicBrainz Picard/Documentation/Scripting: Difference between revisions
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#REDIRECT [[MusicBrainz Picard]] |
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This section describes a simple scripting language implemented in [[Picard Qt|PicardQt]]. |
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==Syntax== |
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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>$lower(...)</nowiki></code>). |
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==Variables== |
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<ul><li style="list-style-type:none">''TODO: Add all tag names from [[Unified Tagging|UnifiedTagging]] here.'' |
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</ul> |
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==Functions== |
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===$if(if,then,else)=== |
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<ul><li style="list-style-type:none">If <code><nowiki>if</nowiki></code> is not empty, it returns <code><nowiki>then</nowiki></code>, otherwise it returns <code><nowiki>else</nowiki></code>. |
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</ul> |
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===$if2(a1,a2,a3,...)=== |
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<ul><li style="list-style-type:none">Returns first non empty argument. |
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</ul> |
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===$lower(text)=== |
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<ul><li style="list-style-type:none">Returns <code><nowiki>text</nowiki></code> in lower case. |
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</ul> |
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===$upper(text)=== |
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<ul><li style="list-style-type:none">Returns <code><nowiki>text</nowiki></code> in upper case. |
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</ul> |
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===$left(text,num)=== |
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<ul><li style="list-style-type:none">Returns first <code><nowiki>num</nowiki></code> characters from <code><nowiki>text</nowiki></code>. |
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</ul> |
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===$right(text,num)=== |
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<ul><li style="list-style-type:none">Returns last <code><nowiki>num</nowiki></code> characters from <code><nowiki>text</nowiki></code>. |
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</ul> |
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===$num(num,len)=== |
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<ul><li style="list-style-type:none">.. |
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</ul> |
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===$search(text)=== |
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<ul><li style="list-style-type:none">.. |
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</ul> |
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===$replace(text,search,replace)=== |
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<ul><li style="list-style-type:none">.. |
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</ul> |
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===$num(text,length)=== |
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===$set(context, name, value)=== |
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<ul><li style="list-style-type:none">Sets the variable <code><nowiki></nowiki></code>name<code><nowiki></nowiki></code> to <code><nowiki></nowiki></code>value<code><nowiki></nowiki></code>. |
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</ul> |
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===$get(name)=== |
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<ul><li style="list-style-type:none">Returns the variable <code><nowiki></nowiki></code>name<code><nowiki></nowiki></code> (equivalent to <code><nowiki></nowiki></code>%name%<code><nowiki></nowiki></code>). |
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</ul> |
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===$trim(text[,char])=== |
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<ul><li style="list-style-type:none">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. |
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</ul> |
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===$add(x,y)=== |
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<ul><li style="list-style-type:none">Add <code><nowiki></nowiki></code>y<code><nowiki></nowiki></code> to <code><nowiki></nowiki></code>x<code><nowiki></nowiki></code>. |
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</ul> |
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===$sub(x,y)=== |
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<ul><li style="list-style-type:none">Substracts <code><nowiki></nowiki></code>y<code><nowiki></nowiki></code> from <code><nowiki></nowiki></code>x<code><nowiki></nowiki></code>. |
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</ul> |
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===$div(x,y)=== |
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<ul><li style="list-style-type:none">Divides <code><nowiki></nowiki></code>x<code><nowiki></nowiki></code> by <code><nowiki></nowiki></code>y<code><nowiki></nowiki></code>. |
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</ul> |
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===$mod(x,y)=== |
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<ul><li style="list-style-type:none">Returns the remainder of <code><nowiki></nowiki></code>x<code><nowiki></nowiki></code> divided by <code><nowiki></nowiki></code>y<code><nowiki></nowiki></code>. |
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</ul> |
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===$mul(x,y)=== |
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<ul><li style="list-style-type:none">Multiplies <code><nowiki></nowiki></code>x<code><nowiki></nowiki></code> by <code><nowiki></nowiki></code>y<code><nowiki></nowiki></code>. |
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</ul> |
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===$or(x,y)=== |
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<ul><li style="list-style-type:none">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. |
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</ul> |
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===$and(x,y)=== |
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<ul><li style="list-style-type:none">Returns true, if both <code><nowiki></nowiki></code>x<code><nowiki></nowiki></code> and <code><nowiki></nowiki></code>y<code><nowiki></nowiki></code> are not empty. |
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</ul> |
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===$not(x)=== |
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<ul><li style="list-style-type:none">Returns true, if <code><nowiki></nowiki></code>x<code><nowiki></nowiki></code> is empty. |
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</ul> |
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===$eq(x,y)=== |
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<ul><li style="list-style-type:none">Returns true, if <code><nowiki></nowiki></code>x<code><nowiki></nowiki></code> equals <code><nowiki></nowiki></code>y<code><nowiki></nowiki></code>. |
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</ul> |
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===$ne(x,y)=== |
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<ul><li style="list-style-type:none">Returns true, if <code><nowiki></nowiki></code>x<code><nowiki></nowiki></code> not equals <code><nowiki></nowiki></code>y<code><nowiki></nowiki></code>. |
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</ul> |
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===$lt(x,y)=== |
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<ul><li style="list-style-type:none">Returns true, if <code><nowiki></nowiki></code>x<code><nowiki></nowiki></code> is lower than <code><nowiki></nowiki></code>y<code><nowiki></nowiki></code>. |
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</ul> |
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===$lte(x,y)=== |
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<ul><li style="list-style-type:none">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>. |
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</ul> |
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===$gt(x,y)=== |
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<ul><li style="list-style-type:none">Returns true, if <code><nowiki></nowiki></code>x<code><nowiki></nowiki></code> is greater than <code><nowiki></nowiki></code>y<code><nowiki></nowiki></code>. |
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</ul> |
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===$gte(x,y)=== |
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<ul><li style="list-style-type:none">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>. |
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</ul> |
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==Examples== |
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===Use case 1: Disc numbers=== |
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<pre>$set(album,$replace(%album%,\(disc \d+(: [^)]+)\),)) |
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$set(discnumber,$search(%album%,\(disc (\d+)\))) |
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</pre> |
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===Use case 2: Artist names=== |
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<pre>$if($search(%album%,(feat. conductor)), |
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$set(artist,%orchestra%)) |
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</pre> |
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<ul><li style="list-style-type:none">''Stupid assumption that all classical albums have "feat. conductor" in the title, but it shows the idea. :)'' |
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</ul> |
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===Use case 3: Live tracks on live albums=== |
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<pre>$if($and($eq(%albumstatus%,live),$not($search(%title,(\(live\))))),$set(title,%title% (live))) |
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</pre> |
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===Lower case filenames with underscores=== |
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<pre>$lower($replace(%albumartist%/%album%/$num(%tracknumber%,2) %title, ,_)) |
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</pre> |
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[[Category:To Be Reviewed]] [[Category:Picard]] [[Category:Development]] |
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Latest revision as of 21:16, 25 November 2014
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