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Add support for new GitHub assetes URLs in image minimizer workflow

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This commit is contained in:
TobiGr 2023-06-15 15:51:56 +02:00
parent 3c87462203
commit 8bdeed8f28
1 changed files with 54 additions and 49 deletions
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103
.github/workflows/image-minimizer.js vendored
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@ -30,10 +30,12 @@ module.exports = async ({github, context}) => {
}
// Regex for finding images (simple variant) ![ALT_TEXT](https://*.githubusercontent.com/<number>/<variousHexStringsAnd->.<fileExtension>)
const REGEX_IMAGE_LOOKUP = /\!\[(.*)\]\((https:\/\/[-a-z0-9]+\.githubusercontent\.com\/\d+\/[-0-9a-f]{32,512}\.(jpg|gif|png))\)/gm;
const REGEX_USER_CONTENT_IMAGE_LOOKUP = /\!\[(.*)\]\((https:\/\/[-a-z0-9]+\.githubusercontent\.com\/\d+\/[-0-9a-f]{32,512}\.(jpg|gif|png))\)/gm;
const REGEX_ASSETS_IMAGE_LOCKUP = /\!\[(.*)\]\((https:\/\/github\.com\/[-\w\d]+\/[-\w\d]+\/assets\/\d+\/[\-0-9a-f]{32,512})\)/gm;
// Check if we found something
let foundSimpleImages = REGEX_IMAGE_LOOKUP.test(initialBody);
let foundSimpleImages = REGEX_USER_CONTENT_IMAGE_LOOKUP.test(initialBody)
|| REGEX_ASSETS_IMAGE_LOCKUP.test(initialBody);
if (!foundSimpleImages) {
console.log('Found no simple images to process');
return;
@ -47,53 +49,8 @@ module.exports = async ({github, context}) => {
var wasMatchModified = false;
// Try to find and replace the images with minimized ones
let newBody = await replaceAsync(initialBody, REGEX_IMAGE_LOOKUP, async (match, g1, g2) => {
console.log(`Found match '${match}'`);
if (g1.endsWith(IGNORE_ALT_NAME_END)) {
console.log(`Ignoring match '${match}': IGNORE_ALT_NAME_END`);
return match;
}
let probeAspectRatio = 0;
let shouldModify = false;
try {
console.log(`Probing ${g2}`);
let probeResult = await probe(g2);
if (probeResult == null) {
throw 'No probeResult';
}
if (probeResult.hUnits != 'px') {
throw `Unexpected probeResult.hUnits (expected px but got ${probeResult.hUnits})`;
}
if (probeResult.height <= 0) {
throw `Unexpected probeResult.height (height is invalid: ${probeResult.height})`;
}
if (probeResult.wUnits != 'px') {
throw `Unexpected probeResult.wUnits (expected px but got ${probeResult.wUnits})`;
}
if (probeResult.width <= 0) {
throw `Unexpected probeResult.width (width is invalid: ${probeResult.width})`;
}
console.log(`Probing resulted in ${probeResult.width}x${probeResult.height}px`);
probeAspectRatio = probeResult.width / probeResult.height;
shouldModify = probeResult.height > IMG_MAX_HEIGHT_PX && probeAspectRatio < MIN_ASPECT_RATIO;
} catch(e) {
console.log('Probing failed:', e);
// Immediately abort
return match;
}
if (shouldModify) {
wasMatchModified = true;
console.log(`Modifying match '${match}'`);
return `<img alt="${g1}" src="${g2}" width=${Math.min(600, (IMG_MAX_HEIGHT_PX * probeAspectRatio).toFixed(0))} />`;
}
console.log(`Match '${match}' is ok/will not be modified`);
return match;
});
let newBody = await replaceAsync(initialBody, REGEX_USER_CONTENT_IMAGE_LOOKUP, minimizeAsync);
newBody = await replaceAsync(newBody, REGEX_ASSETS_IMAGE_LOCKUP, minimizeAsync);
if (!wasMatchModified) {
console.log('Nothing was modified. Skipping update');
@ -129,4 +86,52 @@ module.exports = async ({github, context}) => {
const data = await Promise.all(promises);
return str.replace(regex, () => data.shift());
}
async function minimizeAsync(match, g1, g2) {
console.log(`Found match '${match}'`);
if (g1.endsWith(IGNORE_ALT_NAME_END)) {
console.log(`Ignoring match '${match}': IGNORE_ALT_NAME_END`);
return match;
}
let probeAspectRatio = 0;
let shouldModify = false;
try {
console.log(`Probing ${g2}`);
let probeResult = await probe(g2);
if (probeResult == null) {
throw 'No probeResult';
}
if (probeResult.hUnits != 'px') {
throw `Unexpected probeResult.hUnits (expected px but got ${probeResult.hUnits})`;
}
if (probeResult.height <= 0) {
throw `Unexpected probeResult.height (height is invalid: ${probeResult.height})`;
}
if (probeResult.wUnits != 'px') {
throw `Unexpected probeResult.wUnits (expected px but got ${probeResult.wUnits})`;
}
if (probeResult.width <= 0) {
throw `Unexpected probeResult.width (width is invalid: ${probeResult.width})`;
}
console.log(`Probing resulted in ${probeResult.width}x${probeResult.height}px`);
probeAspectRatio = probeResult.width / probeResult.height;
shouldModify = probeResult.height > IMG_MAX_HEIGHT_PX && probeAspectRatio < MIN_ASPECT_RATIO;
} catch(e) {
console.log('Probing failed:', e);
// Immediately abort
return match;
}
if (shouldModify) {
wasMatchModified = true;
console.log(`Modifying match '${match}'`);
return `<img alt="${g1}" src="${g2}" width=${Math.min(600, (IMG_MAX_HEIGHT_PX * probeAspectRatio).toFixed(0))} />`;
}
console.log(`Match '${match}' is ok/will not be modified`);
return match;
}
}