#14 Update status check via github page

Author: bluehope

src/UpdateCheck.jl

@@ -0,0 +1,63 @@
+
+# Check last updated time
+import Dates
+
+dates_now =  Dates.now()
+
+update_required = false;
+
+if !isfile("checkupdate")
+  update_required = true;
+  Base.Filesystem.touch("checkupdate")
+else
+  dates_lastchecked = Dates.unix2datetime(Base.Filesystem.mtime("checkupdate"))
+  if (dates_now - dates_lastchecked  > Dates.Day(7))
+    update_required = true;
+  end
+end
+if update_required
+  println(" Update required. Automatic update checking started")
+  println(" Visit https://kaist-elst.github.io/DFTforge.jl/ for more update news.")
+end
+
+try
+  # Download metainfo (https://raw.githubusercontent.com/KAIST-ELST/DFTforge.jl/master/Project.toml)
+  metainfo_path = "https://github.com/KAIST-ELST/DFTforge.jl/raw/master/Project.toml"
+  # If update is required, download and replace
+  metadownload_path = download(metainfo_path);
+
+  s_remote = open(metadownload_path) do f
+      readlines(f)
+  end
+
+  s_local = open("Project.toml") do f
+      readlines(f)
+  end
+
+  function getVersionNumber(s)
+    version_remote = ""
+    for i in 1:length(s)
+      v = s[i]
+      if occursin("version = ",v)
+        a = split(v,[' ','"']; keepempty=false)[3]
+        version_remote = VersionNumber(a)
+      end
+    end
+    return version_remote
+  end
+
+  version_Remote = getVersionNumber(s_remote)
+  version_Local = getVersionNumber(s_local)
+
+
+  if version_Remote > version_Local
+    Pkg.update("DFTforge")
+    println(" New version: ",version_Remote, " current version: ", version_Local)
+    println(" git pull github.com/KAIST-ELST/DFTforge.jl ")
+    println(" Or visit https://kaist-elst.github.io/DFTforge.jl/ for update.")
+  end
+
+# ziped src https://github.com/KAIST-ELST/DFTforge.jl/archive/master.zip
+finally
+
+end