63 lines
1.6 KiB
JavaScript
63 lines
1.6 KiB
JavaScript
// add image to array if src has an upload
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function addImage(images, token) {
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if (token.attrs) {
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for (let i = 0; i < token.attrs.length; i++) {
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if (token.attrs[i][1].indexOf("upload://") === 0) {
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images.push([token, i]);
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break;
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}
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}
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}
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}
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function rule(state) {
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let images = [];
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for (let i = 0; i < state.tokens.length; i++) {
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let blockToken = state.tokens[i];
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if (blockToken.tag === "img") {
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addImage(images, blockToken);
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}
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if (!blockToken.children) {
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continue;
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}
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for (let j = 0; j < blockToken.children.length; j++) {
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let token = blockToken.children[j];
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if (token.tag === "img") {
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addImage(images, token);
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}
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}
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}
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if (images.length > 0) {
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let srcList = images.map(([token, srcIndex]) => token.attrs[srcIndex][1]);
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let lookup = state.md.options.discourse.lookupImageUrls;
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let longUrls = (lookup && lookup(srcList)) || {};
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images.forEach(([token, srcIndex]) => {
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let origSrc = token.attrs[srcIndex][1];
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let mapped = longUrls[origSrc];
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if (mapped) {
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token.attrs[srcIndex][1] = mapped;
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} else {
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token.attrs[srcIndex][1] = state.md.options.discourse.getURL(
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"/images/transparent.png"
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);
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token.attrs.push(["data-orig-src", origSrc]);
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}
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});
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}
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}
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export function setup(helper) {
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const opts = helper.getOptions();
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if (opts.previewing) helper.whiteList(["img.resizable"]);
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helper.whiteList(["img[data-orig-src]"]);
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helper.registerPlugin(md => {
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md.core.ruler.push("image-protocol", rule);
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});
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}
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