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README.md

hexo-graphviz

Plugin for Hexo which renders Graphviz plots

Installation

Install Package

$ yarn add hexo-graphviz

Edit Config

After installed, you should edit hexo config file: _config.yml:

# hexo-graphviz
graphviz:
  enable: true

Include viz.js in swig or ejs

After editing _config.yml, you shoud be able to edit your blog page component like after-footer.ejs or a swig file which can be found inside the themes/layout directory.

The following code should be added in the file after-footer.ejs:

<% if (theme.graphviz.enable) { %>
  <script src='https://cdnjs.cloudflare.com/ajax/libs/viz.js/1.7.1/viz.js'></script>
  <script>
    String.prototype.replaceAll = function(search, replacement) {
      var target = this;
      return target.split(search).join(replacement);
    };

    let vizObjects = document.querySelectorAll('.graphviz')

    for (let item of vizObjects) {
      let svg = undefined
      try {
        svg = Viz(item.textContent.replaceAll('–', '--'), 'svg')
      } catch(e) {
        svg = `<pre class="error">${e}</pre>`
      }
      item.outerHTML = svg
    }
  </script>
<% } %>

And for swig template engine use the following code:

{% if theme.graphviz.enable %}
  <script src='https://cdnjs.cloudflare.com/ajax/libs/viz.js/1.7.1/viz.js'></script>
  <script>
    String.prototype.replaceAll = function(search, replacement) {
      var target = this;
      return target.split(search).join(replacement);
    };

    let vizObjects = document.querySelectorAll('.graphviz')

    for (let item of vizObjects) {
      let svg = undefined
      try {
        svg = Viz(item.textContent.replaceAll('', '--'), 'svg')
      } catch(e) {
        svg = `<pre class="error">${e}</pre>`
      }
      item.outerHTML = svg
    }
  </script>
{% endif %}

Usage

The graphviz block can be written inside a ```graphviz codeblock.

About

Hexo plugin for rendering Graphviz plots

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