const Fetcher = require('./fetcher.js') const fsm = require('fs-minipass') const cacache = require('cacache') const _tarballFromResolved = Symbol.for('pacote.Fetcher._tarballFromResolved') const _exeBins = Symbol('_exeBins') const { resolve } = require('path') const fs = require('fs') const _readPackageJson = Symbol.for('package.Fetcher._readPackageJson') class FileFetcher extends Fetcher { constructor (spec, opts) { super(spec, opts) // just the fully resolved filename this.resolved = this.spec.fetchSpec } get types () { return ['file'] } manifest () { if (this.package) { return Promise.resolve(this.package) } // have to unpack the tarball for this. return cacache.tmp.withTmp(this.cache, this.opts, dir => this.extract(dir) .then(() => this[_readPackageJson](dir + '/package.json')) .then(mani => this.package = { ...mani, _integrity: this.integrity && String(this.integrity), _resolved: this.resolved, _from: this.from, })) } [_exeBins] (pkg, dest) { if (!pkg.bin) { return Promise.resolve() } return Promise.all(Object.keys(pkg.bin).map(k => new Promise(res => { const script = resolve(dest, pkg.bin[k]) // Best effort. Ignore errors here, the only result is that // a bin script is not executable. But if it's missing or // something, we just leave it for a later stage to trip over // when we can provide a more useful contextual error. fs.stat(script, (er, st) => { if (er) { return res() } const mode = st.mode | 0o111 if (mode === st.mode) { return res() } fs.chmod(script, mode, res) }) }))) } extract (dest) { // if we've already loaded the manifest, then the super got it. // but if not, read the unpacked manifest and chmod properly. return super.extract(dest) .then(result => this.package ? result : this[_readPackageJson](dest + '/package.json').then(pkg => this[_exeBins](pkg, dest)).then(() => result)) } [_tarballFromResolved] () { // create a read stream and return it return new fsm.ReadStream(this.resolved) } packument () { // simulate based on manifest return this.manifest().then(mani => ({ name: mani.name, 'dist-tags': { [this.defaultTag]: mani.version, }, versions: { [mani.version]: { ...mani, dist: { tarball: `file:${this.resolved}`, integrity: this.integrity && String(this.integrity), }, }, }, })) } } module.exports = FileFetcher