feat: Added warning NEP0007, if CopyrightYearStart is not set.

Author: samtrion

settings/sln.build.props

@@ -109,5 +109,3 @@
   </ItemGroup>
 
 </Project>
-
-

settings/sln.build.targets

@@ -1,4 +1,4 @@
-<Project>
+<Project TreatAsLocalProperty="_CopyrightYearStart">
   <Target
     Name="ValidateOldCompatibilityPackages"
     BeforeTargets="DispatchToInnerBuilds;BeforeBuild">
@@ -11,10 +11,11 @@
   </Target>
 
   <PropertyGroup Label="CopyrightAutomation" Condition="'$(Copyright)' == ''">
-    <CopyrightYearStart Condition="'$(CopyrightYearStart)' == ''">$([System.DateTime]::Now.Year)</CopyrightYearStart>
+    <_CopyrightYearStart Condition="'$(CopyrightYearStart)' == ''">$([System.DateTime]::Now.Year)</_CopyrightYearStart>
+    <_CopyrightYearStart Condition="'$(CopyrightYearStart)' != ''">$(CopyrightYearStart)</_CopyrightYearStart>
     <CopyrightYear>$([System.DateTime]::Now.Year)</CopyrightYear>
-    <Copyright Condition="'$(CopyrightYear)' > '$(CopyrightYearStart)'">Copyright @ $(Company) $(CopyrightYearStart) - $(CopyrightYear)</Copyright>
-    <Copyright Condition="'$(CopyrightYear)' == '$(CopyrightYearStart)'">Copyright @ $(Company) $(CopyrightYearStart)</Copyright>
+    <Copyright Condition="'$(CopyrightYear)' > '$(_CopyrightYearStart)'">Copyright @ $(Company) $(_CopyrightYearStart) - $(CopyrightYear)</Copyright>
+    <Copyright Condition="'$(CopyrightYear)' == '$(_CopyrightYearStart)'">Copyright @ $(Company) $(_CopyrightYearStart)</Copyright>
   </PropertyGroup>
 
   <PropertyGroup Label="Properties correction">

settings/targets/ValidatePackageProperties.targets

@@ -17,6 +17,7 @@
     <Warning Code="NEP004" Text="The package tags must be provided." File="$(MSBuildProjectFile)" Condition="'$(ElevateWarningsToError)' != 'true' and '$(PackageTags)' == ''" />
     <Warning Code="NEP005" Text="The package project url must be provided." File="$(MSBuildProjectFile)" Condition="'$(ElevateWarningsToError)' != 'true' and '$(PackageProjectUrl)' == ''" />
     <Warning Code="NEP006" Text="The package repository url must be provided." File="$(MSBuildProjectFile)" Condition="'$(ElevateWarningsToError)' != 'true' and '$(RepositoryUrl)' == ''" />
+    <Warning Code="NEP007" Text="Missing property `&lt;CopyrightYearStart&gt;`, which specifies the start of the copyright." Condition="'$(ElevateWarningsToError)' != 'true' and '$(CopyrightYearStart)' == ''" />
 
     <!-- If $(ElevateWarningsToError) is false, only Warnings will be raised. -->
     <Error Code="NEP001" Text="The package id must be provided." File="$(MSBuildProjectFile)" Condition="'$(ElevateWarningsToError)' == 'true' and '$(PackageId)' == ''" />
@@ -25,6 +26,7 @@
     <Error Code="NEP004" Text="The package tags must be provided." File="$(MSBuildProjectFile)" Condition="'$(ElevateWarningsToError)' == 'true' and '$(PackageTags)' == ''" />
     <Error Code="NEP005" Text="The package project url must be provided." File="$(MSBuildProjectFile)" Condition="'$(ElevateWarningsToError)' == 'true' and '$(PackageProjectUrl)' == ''" />
     <Error Code="NEP006" Text="The package repository url must be provided." File="$(MSBuildProjectFile)" Condition="'$(ElevateWarningsToError)' == 'true' and '$(RepositoryUrl)' == ''" />
+    <Error Code="NEP007" Text="Missing property `&lt;CopyrightYearStart&gt;`, which specifies the start of the copyright." Condition="'$(ElevateWarningsToError)' == 'true' and '$(CopyrightYearStart)' == ''" />
 
   </Target>