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eb9b1ddc1f
closes #10301 - we allow .ico files for icons, but we cannot resize these specialist files at present
67 lines
2.3 KiB
JavaScript
67 lines
2.3 KiB
JavaScript
const Promise = require('bluebird');
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const common = require('../common');
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const fs = require('fs-extra');
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/**
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* @NOTE: Sharp cannot operate on the same image path, that's why we have to use in & out paths.
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*
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* We currently can't enable compression or having more config options, because of
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* https://github.com/lovell/sharp/issues/1360.
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*/
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const unsafeProcess = (options = {}) => {
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return fs.readFile(options.in)
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.then((data) => {
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return unsafeResizeImage(data, {
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width: options.width
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});
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})
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.then((data) => {
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return fs.writeFile(options.out, data);
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});
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};
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const unsafeResizeImage = (originalBuffer, {width, height} = {}) => {
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const sharp = require('sharp');
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return sharp(originalBuffer)
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.resize(width, height, {
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// CASE: dont make the image bigger than it was
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withoutEnlargement: true
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})
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// CASE: Automatically remove metadata and rotate based on the orientation.
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.rotate()
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.toBuffer()
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.then((resizedBuffer) => {
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return resizedBuffer.length < originalBuffer.length ? resizedBuffer : originalBuffer;
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});
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};
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// NOTE: .gif optimization is currently not supported by sharp but will be soon
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// as there has been support added in underlying libvips library https://github.com/lovell/sharp/issues/1372
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// As for .svg files, sharp only supports conversion to png, and this does not
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// play well with animated svg files
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const canTransformFileExtension = ext => !['.gif', '.svg', '.svgz', '.ico'].includes(ext);
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const makeSafe = fn => (...args) => {
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try {
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require('sharp');
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} catch (err) {
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return Promise.reject(new common.errors.InternalServerError({
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message: 'Sharp wasn\'t installed',
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code: 'SHARP_INSTALLATION',
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err: err
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}));
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}
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return fn(...args).catch((err) => {
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throw new common.errors.InternalServerError({
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message: 'Unable to manipulate image.',
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err: err,
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code: 'IMAGE_PROCESSING'
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});
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});
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};
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module.exports.canTransformFileExtension = canTransformFileExtension;
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module.exports.process = makeSafe(unsafeProcess);
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module.exports.resizeImage = makeSafe(unsafeResizeImage);
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