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node_modules/ssb-server/lib/progress.js

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+//poll the progress() function and report how much waiting there is...
+//just whipped this up, obviously room for improvement here.
+module.exports = function (progress) {
+  function bar (r) {
+    var s = '\r', M = 50
+    for(var i = 0; i < M; i++)
+      s += i < M*r ? '*' : '.'
+
+    return s
+  }
+
+  function round (n, p) {
+    return Math.round(n * p) / p
+  }
+
+  function percent (n) {
+    return (round(n, 1000)*100).toString().substring(0, 4)+'%'
+  }
+
+  function rate (prog) {
+    if(prog.target == prog.current) return 1
+    return (prog.current - prog.start) / (prog.target - prog.start)
+  }
+
+  var prog = -1
+  var int = setInterval(function () {
+    var p = progress()
+    var r = 1, c = 0
+    var tasks = []
+    for(var k in p) {
+      var _r = rate(p[k])
+      if(_r < 1)
+        tasks.push(k+':'+percent(_r))
+      r = Math.min(_r, r)
+      c++
+    }
+    if(r != prog) {
+      prog = r
+      var msg = tasks.join(', ')
+      process.stdout.write('\r'+bar(prog) + ' ('+msg+')\x1b[K\r')
+    }
+  }, 333)
+  int.unref && int.unref()
+}
+
+
+