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Merge pull request #13123 from dkurt:fs_keys

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Alexander Alekhin 2018-11-12 17:46:49 +03:00 committed by GitHub
commit e31eb46123
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3 changed files with 24 additions and 0 deletions
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5
modules/core/include/opencv2/core/persistence.hpp
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@ -526,6 +526,11 @@ public:
*/
CV_WRAP_AS(at) FileNode operator[](int i) const;
/** @brief Returns keys of a mapping node.
@returns Keys of a mapping node.
*/
CV_WRAP std::vector<String> keys() const;
/** @brief Returns type of the node.
@returns Type of the node. See FileNode::Type
*/

13
modules/core/src/persistence.cpp
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@ -2083,6 +2083,19 @@ FileNode FileNode::operator[](int i) const
return *it;
}
std::vector<String> FileNode::keys() const
{
CV_Assert(isMap());
std::vector<String> res;
res.reserve(size());
for (FileNodeIterator it = begin(); it != end(); ++it)
{
res.push_back((*it).name());
}
return res;
}
int FileNode::type() const
{
const uchar* p = ptr();

6
modules/core/test/test_io.cpp
View File

@ -1565,6 +1565,12 @@ TEST(Core_InputOutput, FileStorage_json_bool)
ASSERT_EQ((int)fs["map_value"]["bool_true"], 1);
ASSERT_EQ((std::string)fs["map_value"]["str_false"], "false");
ASSERT_EQ((int)fs["bool_false"], 0);
std::vector<String> keys = fs["map_value"].keys();
ASSERT_EQ((int)keys.size(), 3);
ASSERT_EQ(keys[0], "int_value");
ASSERT_EQ(keys[1], "bool_true");
ASSERT_EQ(keys[2], "str_false");
fs.release();
}