我如何在 c# 中快速处理 csproj 文件

Question

I'm making a Pre-Compiler meaning it will read a load of files and process a few custom preprocessor directives. but no matter how much I look online I can't find a working processor for the .csproj file. I can read them and extract data. but I can't process them to extract state with Configuration and platform parameters.

what I mean is, if I have a csproj that adds a few preprocessor directives if on the DEBUG build and others on the RELEASE build, I want to be able to process the file so that when I build of DEBUG I correctly get all then defined Preprocessors and likewise for the RELEASE build.

I'm going to be processing dotnet core projects to be specific.

Answer 1

I want to get the file state after processing all conditions using the Platform and Configuration. this includes stuff like OutputPath, AllowUnsafe, BuildTargets and such.

The c# compiler, unlike the c++ compiler, does not have specific precompiled instruction item elements destined for the compiler like PreprocessorDefinitions .

As a suggestion, you can try to add a custom target in xxxx.csproj file to execute some msbuild task to do some preprocessing. And you want to do all of these after pre-build target, you can just set AfterTargets="PrepareForBuild" to this custom target which means it runs after PrepareForBuild target.

Suggesstion

Just like this:

<Target Name="CustomPreprocessor" AfterTargets="PrepareForBuild">

<Message Importance="high" Text="$(OutputPath)--$(AllowUnsafeBlocks)--$(PrepareForBuildDependsOn)" ></Message>

 ........//other msbuild task

 </Target>

1) If you want to use the configuration as a condition and execute different pre-instructions according to Debug or Release , you can use MSBuild conditions . If you want to use Debug , you can refer to this:

<Target Name="CustomPreprocessor" AfterTargets="PrepareForBuild" Condition=" '$(Configuration)' == 'Debug' ">

At the same time, if you also want to add palform as a parallel condition, please try this:

 <Target Name="CustomPreprocessor" AfterTargets="PrepareForBuild" Condition=" '$(Configuration)' == 'Debug' and '$(Platform)' =='Any CPU' ">

2) Since outputpath and AllowUnsafe are MSBuild properties, you can use $(outputpath) and $(AllowUnsafeBlocks) to get their values while you can use @(...) to get values of MSBuild items .

3) Basically, to execute a preinstruction in target, you can do it with a task, you can refer to this document to add any task as you want to do any operation.