mirror of
https://github.com/tcsenpai/Zundler.git
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b40354235a
Instead of inserting the entire global context into the iframe's HTML, where we need to encode it to and decode it from JSON and base64, we only insert a stripped global context, i.e. without the file tree and the utils. If these are needed in the iframe, for example when a script changes the DOM and needs to load an image, we use messages to communicate with the parent document and retrieve the file in question.
87 lines
2.6 KiB
JavaScript
87 lines
2.6 KiB
JavaScript
/*
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* Functions that will be needed by several files
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*/
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var isVirtual = function(url) {
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// Return true if the url should be retrieved from the virtual file tree
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var _url = url.toString().toLowerCase();
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return (! (
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_url == "" ||
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_url[0] == "#" ||
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_url.startsWith('https:/') ||
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_url.startsWith('http:/') ||
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_url.startsWith('data:') ||
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_url.startsWith('javascript:') ||
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_url.startsWith('about:srcdoc') ||
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_url.startsWith('blob:')
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));
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};
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var splitUrl = function(url) {
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// Return a list of three elements: path, GET parameters, anchor
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var anchor = url.split('#')[1] || "";
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var getParameters = url.split('#')[0].split('?')[1] || "";
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var path = url.split('#')[0];
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path = path.split('?')[0];
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let result = [path, getParameters, anchor];
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// console.log("Split URL", url, result);
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return result;
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};
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var fixLink = function(a) {
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const href = a.getAttribute("href");
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if (isVirtual(href)) {
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// virtualClick will be defined in the iFrame, but fixLink may be
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// called in the parent document, so we use `onclick`, because we
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// can define the function as a string
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a.setAttribute("onclick", "virtualClick(event)");
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} else if (href.startsWith('#')) {
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a.setAttribute('href', "about:srcdoc" + a.getAttribute('href'))
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} else if (
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!href.startsWith('about:srcdoc')
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&& !href.startsWith('javascript:')
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) {
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// External links should open in a new tab. Browsers block links to
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// sites of different origin within an iframe for security reasons.
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a.setAttribute('target', "_blank");
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}
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};
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var fixForm = function(form) {
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var href = form.getAttribute('action');
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if (isVirtual(href) && form.getAttribute('method').toLowerCase() == 'get') {
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form.setAttribute("onsubmit", "virtualClick(event)");
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}
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};
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var normalizePath = function(path) {
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// make relative paths absolute
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var result = window.globalContext.current_path;
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result = result.split('/');
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result.pop();
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result = result.concat(path.split('/'));
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// resolve relative directories
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var array = [];
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Array.from(result).forEach( component => {
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if (component == '..') {
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if (array) {
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array.pop();
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}
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} else if (component == '.') {
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} else {
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if (component) { array.push(component); }
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}
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});
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result = array.join('/');
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// console.log(`Normalized path: ${path} -> ${result} (@${window.globalContext.current_path})`);
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return result;
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};
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