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feat: support object tags (e.g. embedded svg) #137

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feat: support object tags (e.g. embedded svg) #137

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09ca49e
Explicit support for protocol and port
tkluck Sep 26, 2023
78e3fb0
Add support for object tags (e.g. embedded svg)
tkluck Sep 26, 2023
47759e2
Remove special casing for anchors
tkluck Sep 26, 2023
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25 changes: 20 additions & 5 deletions htmlpreview.js
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,15 @@

var url = location.search.substring(1).replace(/\/\/github\.com/, '//raw.githubusercontent.com').replace(/\/blob\//, '/'); //Get URL of the raw file

var rewrite = function (url) {
if (location.port.length) {
port_part = ':' + location.port
} else {
port_part = ''
}
return location.protocol + '//' + location.hostname + port_part + location.pathname + '?' + url
}

var replaceAssets = function () {
var frame, a, link, links = [], script, scripts = [], i, href, src;
//Framesets
Expand All @@ -14,17 +23,23 @@
for (i = 0; i < frame.length; ++i) {
src = frame[i].src; //Get absolute URL
if (src.indexOf('//raw.githubusercontent.com') > 0 || src.indexOf('//bitbucket.org') > 0) { //Check if it's from raw.github.com or bitbucket.org
frame[i].src = '//' + location.hostname + location.pathname + '?' + src; //Then rewrite URL so it can be loaded using CORS proxy
frame[i].src = rewrite(src); //Then rewrite URL so it can be loaded using CORS proxy
}
}
//Objects
object = document.querySelectorAll('object[data]');
for (i = 0; i < object.length; ++i) {
src = object[i].data; //Get absolute URL
if (src.indexOf('//raw.githubusercontent.com') > 0 || src.indexOf('//bitbucket.org') > 0) { //Check if it's from raw.github.com or bitbucket.org
object[i].data = rewrite(src); //Then rewrite URL so it can be loaded using CORS proxy
}
}
//Links
a = document.querySelectorAll('a[href]');
for (i = 0; i < a.length; ++i) {
href = a[i].href; //Get absolute URL
if (href.indexOf('#') > 0) { //Check if it's an anchor
a[i].href = '//' + location.hostname + location.pathname + location.search + '#' + a[i].hash.substring(1); //Then rewrite URL with support for empty anchor
} else if ((href.indexOf('//raw.githubusercontent.com') > 0 || href.indexOf('//bitbucket.org') > 0) && (href.indexOf('.html') > 0 || href.indexOf('.htm') > 0)) { //Check if it's from raw.github.com or bitbucket.org and to HTML files
a[i].href = '//' + location.hostname + location.pathname + '?' + href; //Then rewrite URL so it can be loaded using CORS proxy
if ((href.indexOf('//raw.githubusercontent.com') > 0 || href.indexOf('//bitbucket.org') > 0) && (href.indexOf('.html') > 0 || href.indexOf('.htm') > 0)) { //Check if it's from raw.github.com or bitbucket.org and to HTML files
a[i].href = rewrite(href); //Then rewrite URL so it can be loaded using CORS proxy
}
}
//Stylesheets
Expand Down