provide getHash for component-downloader and shrinkwrapper

Author: timaschew

HISTORY.md

@@ -1,3 +1,7 @@
+1.2.0 / 2015-03-14
+==================
+- provide `getHash()` for component-downloader and shrinkwrapper
+
 1.1.11 / 2015-01-22
 ==================
 - fix [component#621](https://github.com/componentjs/component/issues/621) - not resolving semver in some cases

lib/remotes/bitbucket.js

@@ -28,6 +28,11 @@ function BitBucket(options) {
 
 BitBucket.prototype.name = 'bitbucket'
 
+BitBucket.prototype.getHash =function* (repo, ref) {
+  console.log('BitBucket.prototype.getHash not implemented yet');
+  return null;
+};
+
 /**
  * DOES NOT SOLVE REDIRECTS!
  *

lib/remotes/github.js

@@ -50,6 +50,20 @@ GitHub.prototype._checkRedirect = function* (repo) {
   return null;
 }
 
+GitHub.prototype.getHash =function* (repo, ref) {
+  var uri = 'https://api.github.com/repos/' + repo + '/commits?sha=' + ref;
+  debug('GET "%s"', uri);
+  API_COUNTER++;
+  var hash = null;
+  var res = yield* this.request(uri, true);
+  if (res.statusCode === 404) {
+    debug('could not fetch hash for ' + repo, ref);
+  } else {
+    hash = res.body[0].sha;
+  }
+  return hash;
+};
+
 /**
  * @param {String} repo
  * @return {Array} references

package.json

@@ -1,7 +1,7 @@
 {
   "name": "component-remotes",
   "description": "Normalize remote end points",
-  "version": "1.1.11",
+  "version": "1.2.0",
   "author": {
     "name": "Jonathan Ong",
     "email": "[email protected]",