alt is considered NodeValue::Text

[dev0Guy]

HI .
converted the following md file
# Awesome README [![Awesome](https://cdn.jsdelivr.net/gh/sindresorhus/awesome@d7305f38d29fed78fa85652e3a63e154dd8e8829/media/badge.svg)](https://github.com/sindresorhus/awesome#readme)
Created node iter on type nodevalue::Text. while debuging i saw the alt="text" is considered text. is there a way to discard it ??

Thanks in advance,
dev0guy

[dev0Guy]

use std::{fs};
use comrak::{parse_document,format_html, Arena, ComrakOptions, nodes::{AstNode, NodeValue}};

fn iter_nodes<'a,F>(node: &'a AstNode<'a>, f: &F)
    where F: Fn(&'a AstNode<'a>){
    f(node);
    for c in node.children(){
        iter_nodes(c, f);
    }

}

fn main(){
    let markdown_input = fs::read_to_string("./assets/readme.md").expect("Can't open file");
    // let markdown_input = "This is my input.\n\n1. Also my input.\n2. Certainly my input. \n ";
    let arena = Arena::new();
    let root = parse_document(&arena, &markdown_input, &ComrakOptions::default());

    let mut html = vec![];
    // println!("{}",String::from_utf8(html).unwrap());

    iter_nodes(root, &|node|{
        // println!("{:?}", node)
        match &mut node.data.borrow_mut().value{
            &mut NodeValue::Text(ref mut text) =>{
                let orig = std::mem::replace(text, vec![]);
                let inner_text = String::from_utf8(orig).unwrap();
                let new_line = format!(r#" {{"{}"}} "#, &inner_text);
                *text = new_line.as_bytes().to_vec();
            }
            _ => (),
        }
    });
    format_html(root, &ComrakOptions::default(), &mut html).unwrap();
    let as_string = String::from_utf8(html).unwrap().replace("&quot;", r#"""#);
    println!("{}",as_string);

}

output :
<h1> {&quot;Awesome README &quot;} <a href="https://github.com/sindresorhus/awesome#readme"><img src="https://cdn.jsdelivr.net/gh/sindresorhus/awesome@d7305f38d29fed78fa85652e3a63e154dd8e8829/media/badge.svg" alt=" {&quot;Awesome&quot;} " /></a></h1>

[kivikakk]

Indeed, alt text is considered a text node nested inside an image in CommonMark; see the AST output from the interactive dingus:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
  <heading level="1">
    <text>Awesome README </text>
    <link destination="https://github.com/sindresorhus/awesome#readme" title="">
      <image destination="https://cdn.jsdelivr.net/gh/sindresorhus/awesome@d7305f38d29fed78fa85652e3a63e154dd8e8829/media/badge.svg" title="">
        <text>Awesome</text>
      </image>
    </link>
  </heading>
</document>

See also the Images part of the spec.

If you don't want to consider it in your iterator, you'll need to note when you're nested inside an image and not process if so.

[dev0Guy]

@kivikakk Thanks for the answer!
How can I note when you're nested inside an image ?

Thanks in advance!

[kivikakk]

Seeing as this isn't an issue with Comrak itself, I'm going to convert this to a discussion. I don't have the time right now to write this up, as it's more of a general programming question, but I may later (or somebody else might be able to step in and help).