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Merge pull request #27587 from fengyuentau:4x/core/filestorage_json_support_backslash

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core: support parsing back slash \ in parseKey in FileStorage (JSON) #27587

Fixes #27585 

### Pull Request Readiness Checklist

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [x] The PR is proposed to the proper branch
- [x] There is a reference to the original bug report and related work
- [x] There is accuracy test, performance test and test data in opencv_extra repository, if applicable
      Patch to opencv_extra has the same branch name.
- [ ] The feature is well documented and sample code can be built with the project CMake
This commit is contained in:
Yuantao Feng
2025-07-29 17:04:55 +08:00
committed by GitHub
parent 48b75bc029
commit 07cf36cbb0
2 changed files with 36 additions and 4 deletions
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modules/core/test/test_io.cpp
+23
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@@ -1569,6 +1569,29 @@ TEST(Core_InputOutput, FileStorage_json_null_object)
fs.release();
}
TEST(Core_InputOutput, FileStorage_json_key_backslash)
{
// equivalent to json text {"\"":1,"\\":59,"Ġ\"":366,"\\\\":6852}
std::string test = R"({"\"":1,"\\":59,"Ġ\"":366,"\\\\":6852})";
FileStorage fs(test, FileStorage::READ | FileStorage::MEMORY);
ASSERT_TRUE(fs[R"(")"].isNamed()); // = "\""
ASSERT_TRUE(fs[R"(\)"].isNamed()); // = "\\"
ASSERT_TRUE(fs[R"(Ġ")"].isNamed()); // = "Ġ\""
ASSERT_TRUE(fs[R"(\\)"].isNamed()); // = "\\\\"
ASSERT_EQ(fs[R"(")"].name(), R"(")");
ASSERT_EQ(fs[R"(\)"].name(), R"(\)");
ASSERT_EQ(fs[R"(Ġ")"].name(), R"(Ġ")");
ASSERT_EQ(fs[R"(\\)"].name(), R"(\\)");
ASSERT_EQ((int)fs[R"(")"], 1);
ASSERT_EQ((int)fs[R"(\)"], 59);
ASSERT_EQ((int)fs[R"(Ġ")"], 366);
ASSERT_EQ((int)fs[R"(\\)"], 6852);
fs.release();
}
TEST(Core_InputOutput, FileStorage_json_named_nodes)
{
std::string test =