Add languages stats

lab/2013/github-users/update-language-stats.js

@@ -0,0 +1,45 @@
+
+var util = require('./util')
+
+getLanguageStats('./github-users-sorted-stats.json', 'github-languages-stats.json')
+getLanguageStats('./github-users-sorted-stats-china.json', 'github-languages-stats-china.json')
+
+
+function getLanguageStats(inputfile, outputfile) {
+  var stats = require(inputfile)
+  var total = stats.length
+  var languages = { Total: total }
+
+  stats.forEach(function(stat) {
+    var lang = stat.language
+    languages[lang] = languages[lang] || 0
+    languages[lang]++
+  })
+
+  languages = (sort(languages, total))
+
+  util.saveStats(outputfile, languages)
+}
+
+
+function sort(obj, total) {
+  var swap = {}
+
+  Object.keys(obj).forEach(function(k, v) {
+    v = obj[k]
+    swap[v] = swap[v] || []
+    swap[v].push(k)
+  })
+
+  var ret = {}
+  for (var i = total; i >= 0; i--) {
+    var k = swap[i]
+    if (k) {
+      k.forEach(function(lang) {
+        ret[lang] = i
+      })
+    }
+  }
+
+  return ret
+}