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resize.js
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resize.js
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const fs = require('fs')
const sharp = require('sharp')
const no_image_url = "<path to image to use when no image is found>"
var checked_path = ''
module.exports = function resize(path, format, width, height, log) {
const fileExists = fs.existsSync(path)
if (fileExists) {
checked_path = path
} else {
checked_path = no_image_url
}
const readStream = fs.createReadStream(checked_path)
readStream.on('error', function (err) {
log.error('Error while accessing read stream ', checked_path, ' : ', err)
})
let transform = sharp()
if (format) {
transform = transform.toFormat(format)
}
if (width || height) {
transform = transform.resize(width, height, {
kernel: sharp.kernel.nearest,
fit: 'contain',
position: 'center',
background: { r: 255, g: 255, b: 255 }
})
}
transform.on('error', function (err) {
log.error('File error ', checked_path, ' : ', err)
})
return readStream.pipe(transform)
}