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How to recover filepath from a given directory in C
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How to recover filepath from a given directory in C
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I'm looking for an efficient way to convert absolute filepath to a path relative to a specific directory.
Let's say we have to following structure:
D:\main\test1\blah.txt
D:\test2\foo.txt
With "D:\main" being the reference directory, then result would be:
- blah.txt => "\test1\blah.txt"
- foo.txt => "..\test2\foo.txt"
Any clue ?
Notes for the record:
It seems that:
- there is no unified API function (cross-platform) for performing this
this question has been asked various times for other languages (though most answers take advantage of function PathRelativePathTo):
- How to get relative path from absolute path
- Getting a file path relative to a particular directory
- How do I get a relative path from one path to another in C#
You are giving windows paths in your example. So, if it is acceptable for you to use the WinAPI functions, you can use PathRelativePathTo.
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