'use strict'
const contentVer = require('../../package.json')['cache-version'].content
const hashToSegments = require('../util/hash-to-segments')
const path = require('path')
const ssri = require('ssri')
// Current format of content file path:
//
// sha512-BaSE64Hex= ->
// ~/.my-cache/content-v2/sha512/ba/da/55deadbeefc0ffee
//
module.exports = contentPath
function contentPath (cache, integrity) {
const sri = ssri.parse(integrity, { single: true })
// contentPath is the *strongest* algo given
return path.join.apply(path, [
contentDir(cache),
sri.algorithm
].concat(hashToSegments(sri.hexDigest())))
}
module.exports._contentDir = contentDir
function contentDir (cache) {
return path.join(cache, `content-v${contentVer}`)
}