C# -> Roslyn -> Find all strings like unix “strings” 命令并能够操作它们

Question

正如标题所说，我想使用 Roslyn 查找所有字符串并能够操作它们。我创建了一个可以获取所有类和本地声明的程序，但我希望有某种方法可以提取字符串。

在理想情况下，我希望也能够为以下字符串获取键值对，并避免使用 int i = 0; 和 var i2 = 0;.

var test = "test";

string test1 = "testing";

String test2 = "testing 2";

我目前拥有的:

{
    class Program
    {
        static void Main(string[] args)
        {
            var workspace = MSBuildWorkspace.Create();

            SyntaxTree tree = CSharpSyntaxTree.ParseText(
                @"using System;
using System.Collections;
using System.Linq;
using System.Text;

namespace HelloWorld
{
    class Program
    {
        static void Main(string[] args)
        {
            var test = ""test"";

            string test1 = ""testing"";

            String test2 = ""testing 2"";

            int i = 0;

            var i2 = 0;
        }
    }
}");
            var root = (CompilationUnitSyntax)tree.GetRoot();

            var classVisitor = new ClassVirtualizationVisitor();
            classVisitor.Visit(root);

            var classes = classVisitor.Classes;

            var localDeclaration = new LocalDeclarationVirtualizationVisitor();
            localDeclaration.Visit(root);

            var localDeclarations = localDeclaration.LocalDeclarations;

        }
    }

class LocalDeclarationVirtualizationVisitor : CSharpSyntaxRewriter
{
    public LocalDeclarationVirtualizationVisitor()
    {
        LocalDeclarations = new List<LocalDeclarationStatementSyntax>();
    }

    public List<LocalDeclarationStatementSyntax> LocalDeclarations { get; set; }

    public override SyntaxNode VisitLocalDeclarationStatement(LocalDeclarationStatementSyntax node)
    {
        node = (LocalDeclarationStatementSyntax)base.VisitLocalDeclarationStatement(node);
        LocalDeclarations.Add(node); 
        return node;
    }
}


    class ClassVirtualizationVisitor : CSharpSyntaxRewriter
    {
        public ClassVirtualizationVisitor()
        {
            Classes = new List<ClassDeclarationSyntax>();
        }

        public List<ClassDeclarationSyntax> Classes { get; set; }

        public override SyntaxNode VisitClassDeclaration(ClassDeclarationSyntax node)
        {
            node = (ClassDeclarationSyntax)base.VisitClassDeclaration(node);
            Classes.Add(node); // save your visited classes
            return node;
        }
    }
}

示例程序:

using System;
using System.Collections;
using System.Linq;
using System.Text;

namespace HelloWorld
{
    class Program
    {
        static void Main(string[] args)
        {
            var test = "test";

            string test1 = "testing";

            String test2 = "testing 2";

            int i = 0;

            var i2 = 0;
        }
    }
}

使用 SysInternals 中的 Strings v2.53 我在下面为 .exe 获取了以下字符串，我想从罗斯林。

https://learn.microsoft.com/sv-se/sysinternals/downloads/strings

!This program cannot be run in DOS mode.
.text
`.rsrc
@.reloc
BSJB
v4.0.30319
#Strings
#US
#GUID
#Blob
T.#]
<Module>
mscorlib
HelloWorld
DebuggableAttribute
TargetFrameworkAttribute
CompilationRelaxationsAttribute
RuntimeCompatibilityAttribute
ObfuscationConsoleApp.exe
System.Runtime.Versioning
Program
System
Main
ObfuscationConsoleApp
.ctor
System.Diagnostics
System.Runtime.CompilerServices
DebuggingModes
args
Object
test
testing
testing 2
z\V
WrapNonExceptionThrows
.NETFramework,Version=v4.6.1
FrameworkDisplayName
.NET Framework 4.6.1
RSDS
g1M
|EF\R}
C:\Users\Oscar\source\repos\ObfuscationConsoleApp\ObfuscationConsoleApp\obj\Debug\ObfuscationConsoleApp.pdb
_CorExeMain
mscoree.dll
VS_VERSION_INFO
VarFileInfo
Translation
StringFileInfo
000004b0
FileDescription
FileVersion
0.0.0.0
InternalName
ObfuscationConsoleApp.exe
LegalCopyright
OriginalFilename
ObfuscationConsoleApp.exe
ProductVersion
0.0.0.0
Assembly Version
0.0.0.0
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
  <assemblyIdentity version="1.0.0.0" name="MyApplication.app"/>
  <trustInfo xmlns="urn:schemas-microsoft-com:asm.v2">
    <security>
      <requestedPrivileges xmlns="urn:schemas-microsoft-com:asm.v3">
        <requestedExecutionLevel level="asInvoker" uiAccess="false"/>
      </requestedPrivileges>
    </security>
  </trustInfo>
</assembly>

Answer 1

也非常感谢@MarcGravell 和 http://roslynquoter.azurewebsites.net/ 的服务(确保选中“保留冗余 API 调用”复选框)或 https://github.com/KirillOsenkov/RoslynQuoter .

打印字符串键值对的最终代码:

var localDeclaration = new LocalDeclarationVirtualizationVisitor();
localDeclaration.Visit(root);

var localDeclarations = localDeclaration.LocalDeclarations;

foreach (var localDeclarationStatementSyntax in localDeclarations)
{
    foreach (VariableDeclaratorSyntax variable in localDeclarationStatementSyntax.Declaration.Variables)
    {
        var stringKind = variable.Initializer.Value.Kind();

        if (stringKind == SyntaxKind.StringLiteralExpression)
        {                       
            Console.WriteLine($"Key: {variable.Identifier.Value} Value:{variable.Initializer.Value}");
        }
    }
}