Creating script to copy tag (or first value) to another tag

[Enn83]

Hello!

I often use your (very useful!) Metatogger software to manage my music library, and this time I want to fill the "Composer" tag of all my music, for example to group all music made by the same "Composer" (here Bob) but where the artist can be "Bob", "Bob feat. XYZ", etc..

I tried to copy the first tag value from the "Artist" tag to the "Composer" one, but the tag stay empty. (Below my little script)
I tried replacing the line by file.SetTag("Composer", "Test"); and here the Composer tag of the selected/active file successfully set to "Test".

Do I made something wrong?

Thanks in advance!

// Describe here what the script does
// Copy the first value of a tag to another one

using System.Linq;
using Metatogger.Data;

// For each active file ...
foreach (var file in files)

	// ... copy tag value to another tag -- (Do not work ...)
	file.SetTag("Composer", file.GetFirstValue("Album"));

	// ... set "Test" value to another tag -- (Work well)
	//file.SetTag("Composer", "Test");


// The "files" variable contains the collection of audio files checked in Metatogger
// Dictionary<string, List<string>> AudioFile.GetAllTags() => returns all tags of an audio file
// List<string> AudioFile.GetValues(string tag) => returns all values of a tag
// string AudioFile.GetFirstValue(string tag) => returns first tag value for a tag
// AudioFile.SetTag(string tag, string value, bool overwrite = true, bool addIfExists = false) => add, overwrite or remove tag values (if value = null)
// AudioFile.SetTagValue(string tag, string oldValue, string newValue) => replaces the value of a tag by a new value

[CyberSinh]

By convention, tag name should be in uppercase.

So, replace:

file.SetTag("Composer", file.GetFirstValue("Album"));

by:

file.SetTag("COMPOSER", file.GetFirstValue("ALBUM"));

or you can use the TagName static class for known tags:

file.SetTag("COMPOSER", file.GetFirstValue(TagName.Album));

But if you're simply copying the value of one tag to another, there's no need to use a script.
Instead, use the manual tag editing tool, and enter the identifier |ARTIST| (identifier is case insensitive) as the target value for the COMPOSER tag.

Further information: https://www.luminescence-software.org/en/metatogger/documentation#how-to-add-or-modify-tags

[Enn83]

I didn't notice I can also use identifiers like |ARTIST| in [Tag Edit] tab!
Thanks a lot, it works perfectly 😊! And happy holidays 🎉 !