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writefreely/templates/include/post-render.tmpl
x4e 795748457c
Case insensitive language highlighting matching
This automatically lowercases language names used in code blocks when finding highlighting scripts for them, since highlightJS defines all languages with lowercase names.
2021-01-24 01:24:12 +00:00

105 lines
3.0 KiB
Cheetah

<!-- Miscelaneous render related template parts we use multiple times -->
{{define "collection-meta"}}
{{if .Monetization -}}
<meta name="monetization" content="{{.Monetization}}" />
{{- end}}
{{end}}
{{define "highlighting"}}
<script>
// TODO: this feels more like a mutation observer
addEventListener('DOMContentLoaded', function () {
var hlbaseUri = "/js/";
var lb = document.querySelectorAll("code[class^='language-']");
// Custom aliasmap
var aliasmap = {
"elisp" : "lisp",
"emacs-lisp" : "lisp",
"c" : "cpp",
"cc" : "cpp",
"h" : "cpp",
"c++" : "cpp",
"h++" : "cpp",
"hpp" : "cpp",
"hh" : "cpp",
"hxx" : "cpp",
"cxx" : "cpp",
"sh" : "bash",
"js" : "javascript",
"jsx" : "javascript",
"html" : "xml"
};
// Given a set of nodes, run highlighting on them
function highlight(nodes) {
for (i=0; i < nodes.length; i++) {
hljs.highlightBlock(nodes[i]);
}
}
// Given a array of URIs, load them in order
function loadLanguages(uris, callback) {
uris.forEach(function(uri) {
var sc = document.createElement('script');
sc.src = uri;
sc.async = false; // critical?
// Set callback on last script
if (uris.indexOf(uri) == uris.length-1) {
// Set callback regardless
// so we're sure it will run if last element had error
// (we only know after loading, so we've had load time already)
sc.onload = callback; sc.onerror = callback;
}
document.head.appendChild(sc);
});
}
// We don't have to do anything if there are no language blocks
if (lb.length > 0) {
// We have blocks to be highlighted, so we load css
var st = document.createElement('link');
st.rel = "stylesheet";
st.href = "/css/lib/atom-one-light.min.css";
document.head.appendChild(st);
// Construct set of files to load, in order
var jss = [hlbaseUri + "highlight.min.js"];
// Check what we need to load
for (i=0; i < lb.length; i++) {
lang = lb[i].className.replace('language-','').toLowerCase();
// Support the aliases specified above
if (aliasmap[lang]) lang = aliasmap[lang];
lurl = hlbaseUri + "highlightjs/" + lang + ".min.js";
if (!jss.includes(lurl)) {
jss.push(lurl);
}
}
// Load files in order, higlight on last load
loadLanguages(jss, () => {highlight(lb)});
}
});
</script>
{{end}}
<!-- Include mathjax configuration -->
{{define "mathjax"}}
<script>
MathJax = {
tex: {
inlineMath: [
["\\(", "\\)"],
['$', '$'],
],
displayMath: [
['$$', '$$'],
['\\[', '\\]'],
],
},
};
</script>
<script type="text/javascript" id="MathJax-script" src="/js/mathjax/tex-svg-full.js" async>
</script>
{{end}}