mdbook-preprocessor-utils 0.2.0

Utilities for writing mdBook preprocessors
Documentation 
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use anyhow::Result;
use serde::Serialize;
use std::fmt::Write;

#[derive(Default)]
pub struct HtmlElementBuilder {
  html: String,
}

impl HtmlElementBuilder {
  pub fn new() -> Self {
    let html = String::from("<div");
    HtmlElementBuilder { html }
  }

  pub fn attr(&mut self, key: &str, value: &str) -> &mut Self {
    let value_escaped = html_escape::encode_double_quoted_attribute(&value);
    write!(&mut self.html, r#" {key}="{value_escaped}""#).unwrap();
    self
  }

  pub fn data(&mut self, key: &str, value: impl Serialize) -> Result<&mut Self> {
    let value_json = serde_json::to_string(&value)?;
    let value_escaped = html_escape::encode_double_quoted_attribute(&value_json);
    write!(&mut self.html, r#" data-{key}="{value_escaped}""#).unwrap();
    Ok(self)
  }

  pub fn finish(mut self) -> String {
    write!(&mut self.html, "></div>").unwrap();
    self.html
  }
}