chushihua

node_modules/cacache/put.js

@@ -0,0 +1,71 @@
+'use strict'
+
+const index = require('./lib/entry-index')
+const memo = require('./lib/memoization')
+const write = require('./lib/content/write')
+const to = require('mississippi').to
+
+module.exports = putData
+function putData (cache, key, data, opts) {
+  opts = opts || {}
+  return write(cache, data, opts).then(res => {
+    // TODO - stop modifying opts
+    opts.size = res.size
+    return index.insert(cache, key, res.integrity, opts).then(entry => {
+      if (opts.memoize) {
+        memo.put(cache, entry, data, opts)
+      }
+      return res.integrity
+    })
+  })
+}
+
+module.exports.stream = putStream
+function putStream (cache, key, opts) {
+  opts = opts || {}
+  let integrity
+  let size
+  const contentStream = write.stream(
+    cache, opts
+  ).on('integrity', int => {
+    integrity = int
+  }).on('size', s => {
+    size = s
+  })
+  let memoData
+  let memoTotal = 0
+  const stream = to((chunk, enc, cb) => {
+    contentStream.write(chunk, enc, () => {
+      if (opts.memoize) {
+        if (!memoData) { memoData = [] }
+        memoData.push(chunk)
+        memoTotal += chunk.length
+      }
+      cb()
+    })
+  }, cb => {
+    contentStream.end(() => {
+      // TODO - stop modifying `opts`
+      opts.size = size
+      index.insert(cache, key, integrity, opts).then(entry => {
+        if (opts.memoize) {
+          memo.put(cache, entry, Buffer.concat(memoData, memoTotal), opts)
+        }
+        stream.emit('integrity', integrity)
+        cb()
+      })
+    })
+  })
+  let erred = false
+  stream.once('error', err => {
+    if (erred) { return }
+    erred = true
+    contentStream.emit('error', err)
+  })
+  contentStream.once('error', err => {
+    if (erred) { return }
+    erred = true
+    stream.emit('error', err)
+  })
+  return stream
+}