读取的字符串实习生池的内容 [英] Read the content of the string intern pool

问题描述

我想枚举在字符串实习生池的弦

这是说，我想要得到的字符串，使得所有实例取值的列表：

That is to say, I want to get the list of all the instances s of string such that:

string.IsInterned(s) != null

请问任何人都知道，如果它是可能的吗？

Does anyone know if it's possible?

推荐答案

的感谢@HansPassant的建议，我设法字符串列表文字在装配中。这是非常接近我本来想。的

您需要使用阅读汇编元数据和枚举用户的字符串。

You need to use read assembly meta-data, and enumerate user-strings. This can be done with these three methods of IMetaDataImport:

[ComImport, Guid("7DAC8207-D3AE-4C75-9B67-92801A497D44")]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
public interface IMetaDataImport
{
    void CloseEnum(IntPtr hEnum);

    uint GetUserString(uint stk, [MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 1)] char[] szString, uint cchString, out uint pchString);

    uint EnumUserStrings(ref IntPtr phEnum, [MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 1)]uint[] rStrings, uint cmax, out uint pcStrings);

    // interface also contains 62 irrelevant methods
}

要获得 IMetaDataImport 实例，你需要得到一个 IMetaDataDispenser ：

To get the instance of IMetaDataImport, you need to get a IMetaDataDispenser:

[ComImport, Guid("809C652E-7396-11D2-9771-00A0C9B4D50C")]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
[CoClass(typeof(CorMetaDataDispenser))]
interface IMetaDataDispenser
{
    uint OpenScope([MarshalAs(UnmanagedType.LPWStr)]string szScope, uint dwOpenFlags, ref Guid riid, [MarshalAs(UnmanagedType.Interface)] out object ppIUnk);

    // interface also contains 2 irrelevant methods
}

[ComImport, Guid("E5CB7A31-7512-11D2-89CE-0080C792E5D8")]
class CorMetaDataDispenser
{
}

下面是怎么一回事：

var dispenser = new IMetaDataDispenser();
var metaDataImportGuid = new Guid("7DAC8207-D3AE-4C75-9B67-92801A497D44");

object scope;
var hr = dispenser.OpenScope(location, 0, ref metaDataImportGuid, out scope);

metaDataImport = (IMetaDataImport)scope;    

其中，位置是路径组件文件。

之后，调用 EnumUserStrings（）和 GetUserString（）是简单明了。

After that, calling EnumUserStrings() and GetUserString() is straighforward.

下面是的博客文章更多的细节和在GitHub上一个示范项目。

Here is a blog post with more detail, and a demo project on GitHub.

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