System.IOUtils.TDirectory.GetParent奇怪的行为？ [英] System.IOUtils.TDirectory.GetParent odd behavior?

问题描述

GetParent（'c：\1\2\'）的结果是'c：\1\2 '。

GetParent（'c：\1\2'）的结果是'c：\1'。

这是正常/预期的行为吗？如果是的话，背后的逻辑是什么？

Is this the normal/expected behavior? If yes, what is the logic behind it?

推荐答案

这个行为可能看起来有点奇怪，但是是设计的。这个类是以.net类 Directory 建模的。 的文档 Directory.GetParent 说：

This behaviour might seem a little odd but it is by design. This class is modelled on the .net class Directory. The documentation for Directory.GetParent says:

此方法返回的字符串由路径中的所有字符组成，但不包括最后的DirectorySeparatorChar或AltDirectorySeparatorChar。例如，将路径C：\Directory\SubDirectory\test.txt传递给GetParent返回C：\Directory\SubDirectory。传递C：\Directory\SubDirectory返回C：\Directory。但是，通过C：\Directory\SubDirectory\返回C：\Directory\SubDirectory，因为结束目录分隔符在SubDirectory之后。

The string returned by this method consists of all characters in the path up to, but not including, the last DirectorySeparatorChar or AltDirectorySeparatorChar. For example, passing the path "C:\Directory\SubDirectory\test.txt" to GetParent returns "C:\Directory\SubDirectory". Passing "C:\Directory\SubDirectory" returns "C:\Directory". However, passing "C:\Directory\SubDirectory\" returns "C:\Directory\SubDirectory", because the ending directory separator is after "SubDirectory".

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