cacache - npm Package Compare versions

Comparing version 11.0.3 to 11.1.0

CHANGELOG.md

@@ -5,2 +5,12 @@ # Change Log
 
+<a name="11.1.0"></a>
+# [11.1.0](https://github.com/zkat/cacache/compare/v11.0.3...v11.1.0) (2018-08-01)
+
+
+### Features
+
+* **read:** add sync support for low-level content read ([b43af83](https://github.com/zkat/cacache/commit/b43af83))
+
+
+
 <a name="11.0.3"></a>
@@ -7,0 +17,0 @@ ## [11.0.3](https://github.com/zkat/cacache/compare/v11.0.2...v11.0.3) (2018-08-01)

lib/content/read.js

@@ -36,2 +36,17 @@ 'use strict'
 
+module.exports.sync = readSync
+function readSync (cache, integrity, opts) {
+  opts = ReadOpts(opts)
+  return withContentSriSync(cache, integrity, (cpath, sri) => {
+    const data = fs.readFileSync(cpath)
+    if (typeof opts.size === 'number' && opts.size !== data.length) {
+      throw sizeError(opts.size, data.length)
+    } else if (ssri.checkData(data, sri)) {
+      return data
+    } else {
+      throw integrityError(sri, cpath)
+    }
+  })
+}
+
 module.exports.stream = readStream
@@ -116,2 +131,24 @@ module.exports.readStream = readStream
 
+function withContentSriSync (cache, integrity, fn) {
+  const sri = ssri.parse(integrity)
+  // If `integrity` has multiple entries, pick the first digest
+  // with available local data.
+  const algo = sri.pickAlgorithm()
+  const digests = sri[algo]
+  if (digests.length <= 1) {
+    const cpath = contentPath(cache, digests[0])
+    return fn(cpath, digests[0])
+  } else {
+    let lastErr = null
+    for (const meta of sri[sri.pickAlgorithm()]) {
+      try {
+        return withContentSriSync(cache, meta, fn)
+      } catch (err) {
+        lastErr = err
+      }
+    }
+    if (lastErr) { throw lastErr }
+  }
+}
+
 function sizeError (expected, found) {
@@ -118,0 +155,0 @@ var err = new Error(Y`Bad data size: expected inserted data to be ${expected} bytes, but got ${found} instead`)

package.json

 {
   "name": "cacache",
-  "version": "11.0.3",
+  "version": "11.1.0",
   "cache-version": {
@@ -5,0 +5,0 @@ "content": "2",

No alert changes

Improved metrics

Total package byte prevSize

105687

increased by1.24%

Lines of code

1367

increased by2.63%

No dependency changes