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Merge pull request #179 from vgeorgiev/lexically_relative_fix

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Fix lexically_relative return when base path evaluates to *this
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gulrak 2024-02-29 07:55:33 +01:00 committed by GitHub
commit 42ea4fc615
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2 changed files with 7 additions and 0 deletions
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3
include/ghc/filesystem.hpp
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@ -3306,6 +3306,9 @@ GHC_INLINE path path::lexically_relative(const path& base) const
--count;
}
}
if (count == 0 && (a == end() || a->empty())) {
return path(".");
}
if (count < 0) {
return path();
}

4
test/filesystem_test.cpp
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@ -965,6 +965,10 @@ TEST_CASE("fs.path.gen - path generation", "[filesystem][path][fs.path.gen]")
// lexically_relative()
CHECK(fs::path("/a/d").lexically_relative("/a/b/c") == "../../d");
CHECK(fs::path("/a/b/c").lexically_relative("/a/d") == "../b/c");
CHECK(fs::path("/a/b/c").lexically_relative("/a/b/c/d/..") == ".");
CHECK(fs::path("/a/b/c/").lexically_relative("/a/b/c/d/..") == ".");
CHECK(fs::path("").lexically_relative("/a/..") == "");
CHECK(fs::path("").lexically_relative("a/..") == ".");
CHECK(fs::path("a/b/c").lexically_relative("a") == "b/c");
CHECK(fs::path("a/b/c").lexically_relative("a/b/c/x/y") == "../..");
CHECK(fs::path("a/b/c").lexically_relative("a/b/c") == ".");