Is creating a BBCode extension possible?

[Art4]

Hey, I have a legacy project with user generated content written in BBCode. I would like to migrate this BBCode content to CommonMark and have started to build a BBCode extension. See here for my progress: youthweb/bbcode-parser#15

Now comes the first obstacle for creating a Delimiter for detecting [b]text[/b] and parsing it to <strong>text</strong>. I have started looking into InlineParser and BlockPArser but my question is: Is it generally possible to detect BBCode with league/commonmark and what are the right tools for detecting simple BBCode rules?

Or more specific: How can I parse Hello [b]World[/b]! into <p>Hello <strong>World</strong>!</p>? Should I create a BlockParser or a InlineParser?

[leevigraham]

@Art4 In the same boat… did you solve this?

[Art4]

Not yet. My progress stucked because of my last question. My progress so far is linked above.

[kingRayhan]

I am also looking for this 😢

[colinodell]

Is it generally possible to detect BBCode with league/commonmark

Probably. I'm not very familiar with BBCode, so I don't know if you could properly implement everything, but parsing the type of syntax you showed would probably work.

How can I parse Hello [b]World[/b]! into

Hello World!

? Should I create a BlockParser or a InlineParser?

You would use an InlineParser for this. See https://spec.commonmark.org/0.30/#blocks-and-inlines to better understand the difference between the two. Generally speaking, anything that would be considered an inline element in HTML would also be considered an inline in CommonMark.