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authorGravatar Piotr Russ <mail@pruss.it> 2020-11-18 23:26:45 +0100
committerGravatar Piotr Russ <mail@pruss.it> 2020-11-18 23:26:45 +0100
commit81ddf9b700bc48a1f8e472209f080f9c1d9a9b09 (patch)
tree8b959d50c5a614cbf9fcb346ed556140374d4b6d /node_modules/cacache/get.js
parent1870f3fdf43707a15fda0f609a021f516f45eb63 (diff)
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-rw-r--r--node_modules/cacache/get.js255
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diff --git a/node_modules/cacache/get.js b/node_modules/cacache/get.js
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--- a/node_modules/cacache/get.js
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-'use strict'
-
-const util = require('util')
-const fs = require('fs')
-const index = require('./lib/entry-index')
-const memo = require('./lib/memoization')
-const read = require('./lib/content/read')
-
-const Minipass = require('minipass')
-const Collect = require('minipass-collect')
-const Pipeline = require('minipass-pipeline')
-
-const writeFile = util.promisify(fs.writeFile)
-
-module.exports = function get (cache, key, opts) {
- return getData(false, cache, key, opts)
-}
-module.exports.byDigest = function getByDigest (cache, digest, opts) {
- return getData(true, cache, digest, opts)
-}
-
-function getData (byDigest, cache, key, opts = {}) {
- const { integrity, memoize, size } = opts
- const memoized = byDigest
- ? memo.get.byDigest(cache, key, opts)
- : memo.get(cache, key, opts)
- if (memoized && memoize !== false) {
- return Promise.resolve(
- byDigest
- ? memoized
- : {
- metadata: memoized.entry.metadata,
- data: memoized.data,
- integrity: memoized.entry.integrity,
- size: memoized.entry.size
- }
- )
- }
- return (byDigest ? Promise.resolve(null) : index.find(cache, key, opts)).then(
- (entry) => {
- if (!entry && !byDigest) {
- throw new index.NotFoundError(cache, key)
- }
- return read(cache, byDigest ? key : entry.integrity, {
- integrity,
- size
- })
- .then((data) =>
- byDigest
- ? data
- : {
- data,
- metadata: entry.metadata,
- size: entry.size,
- integrity: entry.integrity
- }
- )
- .then((res) => {
- if (memoize && byDigest) {
- memo.put.byDigest(cache, key, res, opts)
- } else if (memoize) {
- memo.put(cache, entry, res.data, opts)
- }
- return res
- })
- }
- )
-}
-
-module.exports.sync = function get (cache, key, opts) {
- return getDataSync(false, cache, key, opts)
-}
-module.exports.sync.byDigest = function getByDigest (cache, digest, opts) {
- return getDataSync(true, cache, digest, opts)
-}
-
-function getDataSync (byDigest, cache, key, opts = {}) {
- const { integrity, memoize, size } = opts
- const memoized = byDigest
- ? memo.get.byDigest(cache, key, opts)
- : memo.get(cache, key, opts)
- if (memoized && memoize !== false) {
- return byDigest
- ? memoized
- : {
- metadata: memoized.entry.metadata,
- data: memoized.data,
- integrity: memoized.entry.integrity,
- size: memoized.entry.size
- }
- }
- const entry = !byDigest && index.find.sync(cache, key, opts)
- if (!entry && !byDigest) {
- throw new index.NotFoundError(cache, key)
- }
- const data = read.sync(cache, byDigest ? key : entry.integrity, {
- integrity: integrity,
- size: size
- })
- const res = byDigest
- ? data
- : {
- metadata: entry.metadata,
- data: data,
- size: entry.size,
- integrity: entry.integrity
- }
- if (memoize && byDigest) {
- memo.put.byDigest(cache, key, res, opts)
- } else if (memoize) {
- memo.put(cache, entry, res.data, opts)
- }
- return res
-}
-
-module.exports.stream = getStream
-
-const getMemoizedStream = (memoized) => {
- const stream = new Minipass()
- stream.on('newListener', function (ev, cb) {
- ev === 'metadata' && cb(memoized.entry.metadata)
- ev === 'integrity' && cb(memoized.entry.integrity)
- ev === 'size' && cb(memoized.entry.size)
- })
- stream.end(memoized.data)
- return stream
-}
-
-function getStream (cache, key, opts = {}) {
- const { memoize, size } = opts
- const memoized = memo.get(cache, key, opts)
- if (memoized && memoize !== false) {
- return getMemoizedStream(memoized)
- }
-
- const stream = new Pipeline()
- index
- .find(cache, key)
- .then((entry) => {
- if (!entry) {
- throw new index.NotFoundError(cache, key)
- }
- stream.emit('metadata', entry.metadata)
- stream.emit('integrity', entry.integrity)
- stream.emit('size', entry.size)
- stream.on('newListener', function (ev, cb) {
- ev === 'metadata' && cb(entry.metadata)
- ev === 'integrity' && cb(entry.integrity)
- ev === 'size' && cb(entry.size)
- })
-
- const src = read.readStream(
- cache,
- entry.integrity,
- { ...opts, size: typeof size !== 'number' ? entry.size : size }
- )
-
- if (memoize) {
- const memoStream = new Collect.PassThrough()
- memoStream.on('collect', data => memo.put(cache, entry, data, opts))
- stream.unshift(memoStream)
- }
- stream.unshift(src)
- })
- .catch((err) => stream.emit('error', err))
-
- return stream
-}
-
-module.exports.stream.byDigest = getStreamDigest
-
-function getStreamDigest (cache, integrity, opts = {}) {
- const { memoize } = opts
- const memoized = memo.get.byDigest(cache, integrity, opts)
- if (memoized && memoize !== false) {
- const stream = new Minipass()
- stream.end(memoized)
- return stream
- } else {
- const stream = read.readStream(cache, integrity, opts)
- if (!memoize) {
- return stream
- }
- const memoStream = new Collect.PassThrough()
- memoStream.on('collect', data => memo.put.byDigest(
- cache,
- integrity,
- data,
- opts
- ))
- return new Pipeline(stream, memoStream)
- }
-}
-
-module.exports.info = info
-
-function info (cache, key, opts = {}) {
- const { memoize } = opts
- const memoized = memo.get(cache, key, opts)
- if (memoized && memoize !== false) {
- return Promise.resolve(memoized.entry)
- } else {
- return index.find(cache, key)
- }
-}
-
-module.exports.hasContent = read.hasContent
-
-function cp (cache, key, dest, opts) {
- return copy(false, cache, key, dest, opts)
-}
-
-module.exports.copy = cp
-
-function cpDigest (cache, digest, dest, opts) {
- return copy(true, cache, digest, dest, opts)
-}
-
-module.exports.copy.byDigest = cpDigest
-
-function copy (byDigest, cache, key, dest, opts = {}) {
- if (read.copy) {
- return (byDigest
- ? Promise.resolve(null)
- : index.find(cache, key, opts)
- ).then((entry) => {
- if (!entry && !byDigest) {
- throw new index.NotFoundError(cache, key)
- }
- return read
- .copy(cache, byDigest ? key : entry.integrity, dest, opts)
- .then(() => {
- return byDigest
- ? key
- : {
- metadata: entry.metadata,
- size: entry.size,
- integrity: entry.integrity
- }
- })
- })
- }
-
- return getData(byDigest, cache, key, opts).then((res) => {
- return writeFile(dest, byDigest ? res : res.data).then(() => {
- return byDigest
- ? key
- : {
- metadata: res.metadata,
- size: res.size,
- integrity: res.integrity
- }
- })
- })
-}