adding support of .NET Standard 2.0 (though it doesn't work properly)

Author: salaros

src/DataContractJavaScriptConverter.cs

@@ -1,4 +1,4 @@
-#if !NET35
+#if NET45
 
 using System;
 using System.Collections.Generic;

src/Heartbeat.cs

@@ -1,7 +1,7 @@
 using System;
 using System.Runtime.Serialization;
 
-#if NET35
+#if !NET45
 using Newtonsoft.Json;
 #endif
 
@@ -11,35 +11,35 @@ namespace WakaTime
     public class Heartbeat
     {
 
-#if NET35
+#if !NET45
         [JsonProperty(PropertyName = "entity")]
 #else
         [DataMember(Name = "entity")]
 #endif
         public string FileName { get; internal set; }
 
-#if NET35
+#if !NET45
         [JsonProperty(PropertyName = "timestamp")]
 #else
         [DataMember(Name = "timestamp")]
 #endif
         public string Timestamp { get { return ToUnixEpoch(DateTime); } }
 
-#if NET35
+#if !NET45
         [JsonIgnore]
 #else
         [IgnoreDataMember]
 #endif
         public DateTime DateTime { get; internal set; }
 
-#if NET35
+#if !NET45
         [JsonProperty(PropertyName = "project")]
 #else
         [DataMember(Name = "project")]
 #endif
         public string Project { get; internal set; }
 
-#if NET35
+#if !NET45
         [JsonProperty(PropertyName = "is_write")]
 #else
         [DataMember(Name = "is_write")]
@@ -63,7 +63,7 @@ private static string ToUnixEpoch(DateTime date)
             TimeSpan timestamp = date - epoch;
             long seconds = Convert.ToInt64(Math.Floor(timestamp.TotalSeconds));
             string milliseconds =
-#if NET35
+#if !NET45
                 string.Format("{0:00}:{1:00}:{2:00}",
                    (int)timestamp.TotalHours,
                         timestamp.Minutes,

src/PythonManager.cs

@@ -55,6 +55,7 @@ static bool IsPythonInstalled()
 
         static string GetPathFromMicrosoftRegistry()
         {
+#if !NETSTANDARD
             try
             {
                 var regex = new Regex(@"""([^""]*)\\([^""\\]+(?:\.[^"".\\]+))""");
@@ -87,6 +88,9 @@ static string GetPathFromMicrosoftRegistry()
                 Logger.Error("GetPathFromMicrosoftRegistry:", ex);
                 return null;
             }
+#else
+            return null;
+#endif
         }
 
         static string GetPathFromFixedPath()

src/WakaTime.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
     <PropertyGroup>
-        <TargetFrameworks>net35;net45</TargetFrameworks>
+        <TargetFrameworks>netstandard2.0;net35;net45</TargetFrameworks>
         <Version>8.0.0</Version>
         <AssemblyVersion>8.0.0</AssemblyVersion>
         <FileVersion>8.0.0</FileVersion>
@@ -52,7 +52,7 @@
 
     <ItemGroup>
         <PackageReference Include="ini-parser" Version="2.2.4" />
-        <PackageReference Include="Newtonsoft.Json" Version="11.0.2" Condition="'$(TargetFramework)' == 'net35'" />
+        <PackageReference Include="Newtonsoft.Json" Version="11.0.2" Condition="'$(TargetFramework)' != 'net45'" />
         <PackageReference Include="AsyncBridge.Net35" Version="0.3.1" Condition="'$(TargetFramework)' == 'net35'" />
         <PackageReference Include="DotNetZip" Version="1.11.0" Condition="'$(TargetFramework)' == 'net35'" />
         <PackageReference Include="TaskParallelLibrary" Version="1.0.2856.0" Condition="'$(TargetFramework)' == 'net35'" />

src/WakaTimeIdePlugin.cs

@@ -7,10 +7,10 @@
 using System.Collections.Concurrent;
 using System.Threading.Tasks;
 
-#if NET35
-using Newtonsoft.Json;
-#else
+#if NET45
 using System.Web.Script.Serialization;
+#else
+using Newtonsoft.Json;
 #endif
 
 namespace WakaTime
@@ -296,12 +296,12 @@ private static void ProcessHeartbeats()
             string extraHeartbeatsJSON = null;
             if (hasExtraHeartbeats)
             {
-#if NET35
-                extraHeartbeatsJSON = JsonConvert.SerializeObject(extraHeartbeats, Formatting.None);
-#else
+#if NET45
                 var serializer = new JavaScriptSerializer();
                 serializer.RegisterConverters(new JavaScriptConverter[] { new DataContractJavaScriptConverter(true) });
                 extraHeartbeatsJSON = serializer.Serialize(extraHeartbeats);
+#else
+                extraHeartbeatsJSON = JsonConvert.SerializeObject(extraHeartbeats, Formatting.None);
 #endif
             }