Add support for new GitHub assetes URLs in image minimizer workflow
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3c87462203
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@ -30,10 +30,12 @@ module.exports = async ({github, context}) => {
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}
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// Regex for finding images (simple variant) ![ALT_TEXT](https://*.githubusercontent.com/<number>/<variousHexStringsAnd->.<fileExtension>)
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const REGEX_IMAGE_LOOKUP = /\!\[(.*)\]\((https:\/\/[-a-z0-9]+\.githubusercontent\.com\/\d+\/[-0-9a-f]{32,512}\.(jpg|gif|png))\)/gm;
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const REGEX_USER_CONTENT_IMAGE_LOOKUP = /\!\[(.*)\]\((https:\/\/[-a-z0-9]+\.githubusercontent\.com\/\d+\/[-0-9a-f]{32,512}\.(jpg|gif|png))\)/gm;
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const REGEX_ASSETS_IMAGE_LOCKUP = /\!\[(.*)\]\((https:\/\/github\.com\/[-\w\d]+\/[-\w\d]+\/assets\/\d+\/[\-0-9a-f]{32,512})\)/gm;
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// Check if we found something
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let foundSimpleImages = REGEX_IMAGE_LOOKUP.test(initialBody);
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let foundSimpleImages = REGEX_USER_CONTENT_IMAGE_LOOKUP.test(initialBody)
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|| REGEX_ASSETS_IMAGE_LOCKUP.test(initialBody);
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if (!foundSimpleImages) {
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console.log('Found no simple images to process');
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return;
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@ -47,53 +49,8 @@ module.exports = async ({github, context}) => {
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var wasMatchModified = false;
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// Try to find and replace the images with minimized ones
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let newBody = await replaceAsync(initialBody, REGEX_IMAGE_LOOKUP, async (match, g1, g2) => {
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console.log(`Found match '${match}'`);
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if (g1.endsWith(IGNORE_ALT_NAME_END)) {
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console.log(`Ignoring match '${match}': IGNORE_ALT_NAME_END`);
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return match;
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}
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let probeAspectRatio = 0;
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let shouldModify = false;
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try {
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console.log(`Probing ${g2}`);
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let probeResult = await probe(g2);
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if (probeResult == null) {
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throw 'No probeResult';
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}
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if (probeResult.hUnits != 'px') {
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throw `Unexpected probeResult.hUnits (expected px but got ${probeResult.hUnits})`;
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}
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if (probeResult.height <= 0) {
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throw `Unexpected probeResult.height (height is invalid: ${probeResult.height})`;
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}
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if (probeResult.wUnits != 'px') {
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throw `Unexpected probeResult.wUnits (expected px but got ${probeResult.wUnits})`;
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}
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if (probeResult.width <= 0) {
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throw `Unexpected probeResult.width (width is invalid: ${probeResult.width})`;
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}
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console.log(`Probing resulted in ${probeResult.width}x${probeResult.height}px`);
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probeAspectRatio = probeResult.width / probeResult.height;
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shouldModify = probeResult.height > IMG_MAX_HEIGHT_PX && probeAspectRatio < MIN_ASPECT_RATIO;
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} catch(e) {
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console.log('Probing failed:', e);
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// Immediately abort
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return match;
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}
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if (shouldModify) {
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wasMatchModified = true;
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console.log(`Modifying match '${match}'`);
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return `<img alt="${g1}" src="${g2}" width=${Math.min(600, (IMG_MAX_HEIGHT_PX * probeAspectRatio).toFixed(0))} />`;
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}
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console.log(`Match '${match}' is ok/will not be modified`);
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return match;
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});
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let newBody = await replaceAsync(initialBody, REGEX_USER_CONTENT_IMAGE_LOOKUP, minimizeAsync);
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newBody = await replaceAsync(newBody, REGEX_ASSETS_IMAGE_LOCKUP, minimizeAsync);
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if (!wasMatchModified) {
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console.log('Nothing was modified. Skipping update');
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@ -129,4 +86,52 @@ module.exports = async ({github, context}) => {
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const data = await Promise.all(promises);
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return str.replace(regex, () => data.shift());
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}
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async function minimizeAsync(match, g1, g2) {
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console.log(`Found match '${match}'`);
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if (g1.endsWith(IGNORE_ALT_NAME_END)) {
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console.log(`Ignoring match '${match}': IGNORE_ALT_NAME_END`);
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return match;
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}
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let probeAspectRatio = 0;
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let shouldModify = false;
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try {
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console.log(`Probing ${g2}`);
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let probeResult = await probe(g2);
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if (probeResult == null) {
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throw 'No probeResult';
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}
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if (probeResult.hUnits != 'px') {
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throw `Unexpected probeResult.hUnits (expected px but got ${probeResult.hUnits})`;
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}
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if (probeResult.height <= 0) {
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throw `Unexpected probeResult.height (height is invalid: ${probeResult.height})`;
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}
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if (probeResult.wUnits != 'px') {
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throw `Unexpected probeResult.wUnits (expected px but got ${probeResult.wUnits})`;
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}
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if (probeResult.width <= 0) {
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throw `Unexpected probeResult.width (width is invalid: ${probeResult.width})`;
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}
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console.log(`Probing resulted in ${probeResult.width}x${probeResult.height}px`);
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probeAspectRatio = probeResult.width / probeResult.height;
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shouldModify = probeResult.height > IMG_MAX_HEIGHT_PX && probeAspectRatio < MIN_ASPECT_RATIO;
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} catch(e) {
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console.log('Probing failed:', e);
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// Immediately abort
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return match;
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}
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if (shouldModify) {
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wasMatchModified = true;
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console.log(`Modifying match '${match}'`);
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return `<img alt="${g1}" src="${g2}" width=${Math.min(600, (IMG_MAX_HEIGHT_PX * probeAspectRatio).toFixed(0))} />`;
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}
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console.log(`Match '${match}' is ok/will not be modified`);
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return match;
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}
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}
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