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🐛 proper JSON Pointer escape in diagnostic messages

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This commit is contained in:
Niels Lohmann
2021-01-16 15:33:05 +01:00
parent 7633a21e6c
commit e9d641130d
5 changed files with 252 additions and 199 deletions
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include/nlohmann/detail/json_pointer.hpp
+4 -43
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@@ -11,6 +11,7 @@
#include <nlohmann/detail/diagnostics_t.hpp>
#include <nlohmann/detail/exceptions.hpp>
#include <nlohmann/detail/macro_scope.hpp>
#include <nlohmann/detail/string_escape.hpp>
#include <nlohmann/detail/value_t.hpp>
namespace nlohmann
@@ -70,7 +71,7 @@ class json_pointer
std::string{},
[](const std::string & a, const std::string & b)
{
return a + "/" + escape(b);
return a + "/" + detail::escape(b);
});
}
@@ -791,53 +792,13 @@ class json_pointer
}
// finally, store the reference token
unescape(reference_token);
detail::unescape(reference_token);
result.push_back(reference_token);
}
return result;
}
/*!
@brief replace all occurrences of a substring by another string
@param[in,out] s the string to manipulate; changed so that all
occurrences of @a f are replaced with @a t
@param[in] f the substring to replace with @a t
@param[in] t the string to replace @a f
@pre The search string @a f must not be empty. **This precondition is
enforced with an assertion.**
@since version 2.0.0
*/
static void replace_substring(std::string& s, const std::string& f,
const std::string& t)
{
JSON_ASSERT(!f.empty());
for (auto pos = s.find(f); // find first occurrence of f
pos != std::string::npos; // make sure f was found
s.replace(pos, f.size(), t), // replace with t, and
pos = s.find(f, pos + t.size())) // find next occurrence of f
{}
}
JSON_PRIVATE_UNLESS_TESTED:
/// escape "~" to "~0" and "/" to "~1"
static std::string escape(std::string s)
{
replace_substring(s, "~", "~0");
replace_substring(s, "/", "~1");
return s;
}
/// unescape "~1" to tilde and "~0" to slash (order is important!)
static void unescape(std::string& s)
{
replace_substring(s, "~1", "/");
replace_substring(s, "~0", "~");
}
private:
/*!
@param[in] reference_string the reference string to the current value
@@ -883,7 +844,7 @@ class json_pointer
// iterate object and use keys as reference string
for (const auto& element : *value.m_value.object)
{
flatten(reference_string + "/" + escape(element.first), element.second, result);
flatten(reference_string + "/" + detail::escape(element.first), element.second, result);
}
}
break;