1'use strict' 2 3const contentVer = require('../../package.json')['cache-version'].content 4const hashToSegments = require('../util/hash-to-segments') 5const path = require('path') 6const ssri = require('ssri') 7 8// Current format of content file path: 9// 10// sha512-BaSE64Hex= -> 11// ~/.my-cache/content-v2/sha512/ba/da/55deadbeefc0ffee 12// 13module.exports = contentPath 14 15function contentPath (cache, integrity) { 16 const sri = ssri.parse(integrity, { single: true }) 17 // contentPath is the *strongest* algo given 18 return path.join( 19 contentDir(cache), 20 sri.algorithm, 21 ...hashToSegments(sri.hexDigest()) 22 ) 23} 24 25module.exports.contentDir = contentDir 26 27function contentDir (cache) { 28 return path.join(cache, `content-v${contentVer}`) 29} 30