From 95f57eddc2baa6da3a8bdfffeb3f0f34f464e013 Mon Sep 17 00:00:00 2001
From: Esteban Puentes <esteban.puentes@cern.ch>
Date: Thu, 18 Apr 2019 10:53:38 +0200
Subject: [PATCH] Configure build number from tag

---
 BuildCommon.targets    | 78 ++++++++++++++++++++++++++++++++++++++++++
 updates/updates.csproj |  1 +
 2 files changed, 79 insertions(+)
 create mode 100644 BuildCommon.targets

diff --git a/BuildCommon.targets b/BuildCommon.targets
new file mode 100644
index 0000000..3003e28
--- /dev/null
+++ b/BuildCommon.targets
@@ -0,0 +1,78 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+    <!--
+        Defining custom Targets to execute before project compilation starts.
+    -->
+    <PropertyGroup>
+        <CompileDependsOn>
+            CommonBuildDefineModifiedAssemblyVersion;
+            $(CompileDependsOn);
+        </CompileDependsOn>
+    </PropertyGroup>
+
+    
+    <!--
+        Creates modified version of AssemblyInfo.cs, replaces [AssemblyVersion] attribute with the one specifying actual build version (from MSBuild properties), and includes that file instead of the original AssemblyInfo.cs in the compilation.
+
+        Works with both, .cs and .vb version of the AssemblyInfo file, meaning it supports C# and VB.Net projects simultaneously.
+    -->
+    <Target Name="CommonBuildDefineModifiedAssemblyVersion" Condition="'$(VersionAssembly)' != ''">
+        <!-- Find AssemblyInfo.cs in the "Compile" Items. Remove it from "Compile" Items because we will use a modified version instead. -->
+        <ItemGroup>
+            <OriginalAssemblyInfo Include="@(Compile)" Condition="%(Filename) == 'AssemblyInfo' And %(Extension) == '.cs'" />
+            <Compile Remove="**/AssemblyInfo.cs" />
+        </ItemGroup>
+        <!-- Copy the original AssemblyInfo.cs to obj\ folder, i.e. $(IntermediateOutputPath). The copied filepath is saved into @(ModifiedAssemblyInfo) Item. -->
+        <Copy SourceFiles="@(OriginalAssemblyInfo)"
+            DestinationFiles="@(OriginalAssemblyInfo->'$(IntermediateOutputPath)%(Identity)')">
+            <Output TaskParameter="DestinationFiles" ItemName="ModifiedAssemblyInfo"/>
+        </Copy>
+        <!-- Replace the version bit (in AssemblyVersion and AssemblyFileVersion attributes) using regular expression. Use the defined property: $(VersionAssembly). -->
+        <Message Text="Setting AssemblyVersion to $(VersionAssembly)" />
+        <RegexUpdateFile Files="@(ModifiedAssemblyInfo)"
+                    Regex="Version\(&quot;(\d+)\.(\d+)(\.(\d+)\.(\d+)|\.*)&quot;\)"
+                    ReplacementText="Version(&quot;$(VersionAssembly)&quot;)"
+                    />
+        <!-- Include the modified AssemblyInfo.cs file in "Compile" items (instead of the original). -->
+        <ItemGroup>
+            <Compile Include="@(ModifiedAssemblyInfo)" />
+        </ItemGroup>
+    </Target>
+
+    <UsingTask TaskName="RegexUpdateFile" TaskFactory="CodeTaskFactory" AssemblyFile="$(MSBuildToolsPath)\Microsoft.Build.Tasks.v4.0.dll">
+        <ParameterGroup>
+            <Files ParameterType="Microsoft.Build.Framework.ITaskItem[]" Required="true" />
+            <Regex ParameterType="System.String" Required="true" />
+            <ReplacementText ParameterType="System.String" Required="true" />
+        </ParameterGroup>
+        <Task>
+            <Reference Include="System.Core" />
+            <Using Namespace="System" />
+            <Using Namespace="System.IO" />
+            <Using Namespace="System.Text.RegularExpressions" />
+            <Using Namespace="Microsoft.Build.Framework" />
+            <Using Namespace="Microsoft.Build.Utilities" />
+            <Code Type="Fragment" Language="cs">
+                <![CDATA[
+                    try {
+                        var rx = new System.Text.RegularExpressions.Regex(this.Regex);
+                        for (int i = 0; i < Files.Length; ++i)
+                        {
+                            var path = Files[i].GetMetadata("FullPath");
+                            if (!File.Exists(path)) continue;
+
+                            var txt = File.ReadAllText(path);
+                            txt = rx.Replace(txt, this.ReplacementText);
+                            File.WriteAllText(path, txt);
+                        }
+                        return true;
+                    }
+                    catch (Exception ex) {
+                        Log.LogErrorFromException(ex);
+                        return false;
+                    }
+                ]]>
+            </Code>
+        </Task>
+    </UsingTask>
+</Project>
\ No newline at end of file
diff --git a/updates/updates.csproj b/updates/updates.csproj
index e1cc1fb..1c7410a 100644
--- a/updates/updates.csproj
+++ b/updates/updates.csproj
@@ -74,4 +74,5 @@
     <None Include="packages.config" />
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <Import Project="$(SolutionDir)\BuildCommon.targets" />
 </Project>
\ No newline at end of file