mirror of
https://github.com/public-transport/db-vendo-client.git
synced 2025-02-23 15:19:35 +02:00
22 lines
609 B
JavaScript
22 lines
609 B
JavaScript
'use strict'
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const createParseBitmask = (profile) => {
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const defaultProducts = {}
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for (let product of profile.products) defaultProducts[product.id] = false
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const parseBitmask = (bitmask) => {
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const res = Object.assign({}, defaultProducts)
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const bits = bitmask.toString(2).split('').map(i => parseInt(i)).reverse()
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for (let i = 0; i < bits.length; i++) {
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if (!bits[i]) continue // ignore `0`
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const product = profile.products.find(p => p.bitmasks.includes(Math.pow(2, i)))
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if (product) res[product.id] = true
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}
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return res
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}
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return parseBitmask
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}
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module.exports = createParseBitmask
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