Regex Help!

[Casmat]

Hey!

Let's say I have this:

Once upon a time, a brave HISE hero who was <Tags> amazing and helpful </Tags> helped me with my post :)

I'd like to create a regex string that returns this:

 amazing and helpful 

I got this regex: <Tags>(.*?)<\/Tags> but it doesnt work in hise... also the <Tags> and </Tags> are included with the regex code above, couldnt figure out how to remove it.. maybe use non capture groups or use the replace() function?

Thanks!

[David Healey]

@Casmat Do you want it to return "amazing and helpful", or do you want it to always return what is between <tags></tags>?

Also you have a typo. Tag/Tags

[Casmat]

@d-healey always between the <Tags> and </Tags>, so in this case, " amazing and helpful " (including spaces!)

[David Healey]

const s = "was <Tags> amazing and helpful </Tags> helped";

const results = Engine.getRegexMatches(s, "<Tags>(.*?)<\/Tags>");

Console.print(results[1]);

[Casmat]

@d-healey hmm, doesnt work for my use case.. Im trying to modify the preset file like you said and im trying to use a regex string to find <Tags> and </Tags>. Any ideas?

[David Healey]

@Casmat

The code I put above returns the string in between as in your original example (is that not working on your system?). Give me more details about what you want to do.

[Christoph Hart]

what do you want to modify? There's a user preset handler preload callback which lets you process the preset data as JSON before it's loaded, so maybe you don't have to resort to Regexing an XML like it's 1982...

[David Healey]

@Christoph-Hart He wants to make a custom interface for managing preset tags. See other thread - https://forum.hise.audio/topic/8142/tagging-presets/

[Casmat]

@Christoph-Hart @d-healey Yeah, im using a custom browser (preset browser tags wont work AFAIK) and I'm looking for a way to add tags to the preset file, some suggested putting it on the file name/making an internal database of preset tags, but for my use case, (preset sharing plays a big role), I'm looking for a way to add presets to the xml file itself. @d-healey suggested using the load as string and write as string functions to modify the xml itself so I'm thinking of adding a structure like this to the xml:

<?xml version="1.0" encoding="UTF-8"?>

<Preset Version="1.0.0">
  <Content Processor="Interface">
    <Control type="ScriptControl" id="amazingId" value="0.0"/>
  </Content>
  <Tags>
    <Tag>Synth</Tag>
    <Tag>Pad</Tag>
    <Tag>Pluck</Tag>
  </Tags>
  <MidiAutomation/>
  <MPEData Enabled="0"/>
</Preset>

and be able to read the tags as strings and put them in arrays in hise. Hence my question of using regex to just get this part out of the mess above:

    <Tag>Synth</Tag>
    <Tag>Pad</Tag>
    <Tag>Pluck</Tag>

The regex @d-healey posted does weird things on my system and creates an undefined file, i also tried to use the split() function like this: split("") it splits the whole xml string by <'s (even when using < as a unicode character thinking < itself may be causing issues)

[David Healey]

@Casmat I wouldn't put each tag within . I'd just use a comma separated list, then you can easily put it into an array.

[Casmat]

@d-healey ahh. that makes life easier! any idea still on how to get the identifiable in hisecript? heres what I have in my code:

inline function taggingView()
{
	reg preset = filePreset.loadAsString();
	Console.print(preset);
	if(preset.contains("\u003C" + "Tags" + "\u003E"))
	{
		reg result = Engine.getRegexMatches(preset, "<Tags>(.*?)<\/Tags>")[1];
                Console.print(result);
	}
};

but result comes out as undefined.. preset is the preset file.

[David Healey]

@Casmat Use local within inline functions, not reg.

My guess is it doesn't like the new line characters.

Try local matches = Engine.getRegexMatches(s.replace("\n"), "<Tags>(.*?)<\/Tags>");

[Casmat]

@d-healey used reg to look at the script watch table, is there a way to see local variables in that table? And that was a very good guess! Thanks :)

[David Healey]

@Casmat

[Casmat]

@d-healey ooh, never looked there! Thanks!