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/* eslint node/no-deprecated-api: "off" */
const semver = require('semver')
const { basename } = require('path')
const { parse } = require('url')
module.exports = (name, tgz) => {
const base = basename(tgz)
if (!base.endsWith('.tgz')) {
return null
}
const u = parse(tgz)
if (/^https?:/.test(u.protocol)) {
// registry url? check for most likely pattern.
// either /@foo/bar/-/bar-1.2.3.tgz or
// /foo/-/foo-1.2.3.tgz, and fall through to
// basename checking. Note that registries can
// be mounted below the root url, so /a/b/-/x/y/foo/-/foo-1.2.3.tgz
// is a potential option.
const tfsplit = u.path.slice(1).split('/-/')
if (tfsplit.length > 1) {
const afterTF = tfsplit.pop()
if (afterTF === base) {
const pre = tfsplit.pop()
const preSplit = pre.split(/\/|%2f/i)
const project = preSplit.pop()
const scope = preSplit.pop()
return versionFromBaseScopeName(base, scope, project)
}
}
}
const split = name.split(/\/|%2f/i)
const project = split.pop()
const scope = split.pop()
return versionFromBaseScopeName(base, scope, project)
}
const versionFromBaseScopeName = (base, scope, name) => {
if (!base.startsWith(name + '-')) {
return null
}
const parsed = semver.parse(base.substring(name.length + 1, base.length - 4))
return parsed ? {
name: scope && scope.charAt(0) === '@' ? `${scope}/${name}` : name,
version: parsed.version,
} : null
}