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-rw-r--r--json4cpp/tests/src/unit-unicode5.cpp324
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diff --git a/json4cpp/tests/src/unit-unicode5.cpp b/json4cpp/tests/src/unit-unicode5.cpp
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+// __ _____ _____ _____
+// __| | __| | | | JSON for Modern C++ (supporting code)
+// | | |__ | | | | | | version 3.12.0
+// |_____|_____|_____|_|___| https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2026 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
+#include "doctest_compatibility.h"
+
+// for some reason including this after the json header leads to linker errors with VS 2017...
+#include <locale>
+
+#include <nlohmann/json.hpp>
+using nlohmann::json;
+
+#include <fstream>
+#include <sstream>
+#include <iostream>
+#include <iomanip>
+#include "make_test_data_available.hpp"
+
+// this test suite uses static variables with non-trivial destructors
+DOCTEST_CLANG_SUPPRESS_WARNING_PUSH
+DOCTEST_CLANG_SUPPRESS_WARNING("-Wexit-time-destructors")
+
+namespace
+{
+extern size_t calls;
+size_t calls = 0;
+
+void check_utf8dump(bool success_expected, int byte1, int byte2, int byte3, int byte4);
+
+void check_utf8dump(bool success_expected, int byte1, int byte2 = -1, int byte3 = -1, int byte4 = -1)
+{
+ static std::string json_string;
+ json_string.clear();
+
+ CAPTURE(byte1)
+ CAPTURE(byte2)
+ CAPTURE(byte3)
+ CAPTURE(byte4)
+
+ json_string += std::string(1, static_cast<char>(byte1));
+
+ if (byte2 != -1)
+ {
+ json_string += std::string(1, static_cast<char>(byte2));
+ }
+
+ if (byte3 != -1)
+ {
+ json_string += std::string(1, static_cast<char>(byte3));
+ }
+
+ if (byte4 != -1)
+ {
+ json_string += std::string(1, static_cast<char>(byte4));
+ }
+
+ CAPTURE(json_string)
+
+ // store the string in a JSON value
+ static json j;
+ static json j2;
+ j = json_string;
+ j2 = "abc" + json_string + "xyz";
+
+ static std::string s_ignored;
+ static std::string s_ignored2;
+ static std::string s_ignored_ascii;
+ static std::string s_ignored2_ascii;
+ static std::string s_replaced;
+ static std::string s_replaced2;
+ static std::string s_replaced_ascii;
+ static std::string s_replaced2_ascii;
+
+ // dumping with ignore/replace must not throw in any case
+ s_ignored = j.dump(-1, ' ', false, json::error_handler_t::ignore);
+ s_ignored2 = j2.dump(-1, ' ', false, json::error_handler_t::ignore);
+ s_ignored_ascii = j.dump(-1, ' ', true, json::error_handler_t::ignore);
+ s_ignored2_ascii = j2.dump(-1, ' ', true, json::error_handler_t::ignore);
+ s_replaced = j.dump(-1, ' ', false, json::error_handler_t::replace);
+ s_replaced2 = j2.dump(-1, ' ', false, json::error_handler_t::replace);
+ s_replaced_ascii = j.dump(-1, ' ', true, json::error_handler_t::replace);
+ s_replaced2_ascii = j2.dump(-1, ' ', true, json::error_handler_t::replace);
+
+ if (success_expected)
+ {
+ static std::string s_strict;
+ // strict mode must not throw if success is expected
+ s_strict = j.dump();
+ // all dumps should agree on the string
+ CHECK(s_strict == s_ignored);
+ CHECK(s_strict == s_replaced);
+ }
+ else
+ {
+ // strict mode must throw if success is not expected
+ CHECK_THROWS_AS(j.dump(), json::type_error&);
+ // ignore and replace must create different dumps
+ CHECK(s_ignored != s_replaced);
+
+ // check that replace string contains a replacement character
+ CHECK(s_replaced.find("\xEF\xBF\xBD") != std::string::npos);
+ }
+
+ // check that prefix and suffix are preserved
+ CHECK(s_ignored2.substr(1, 3) == "abc");
+ CHECK(s_ignored2.substr(s_ignored2.size() - 4, 3) == "xyz");
+ CHECK(s_ignored2_ascii.substr(1, 3) == "abc");
+ CHECK(s_ignored2_ascii.substr(s_ignored2_ascii.size() - 4, 3) == "xyz");
+ CHECK(s_replaced2.substr(1, 3) == "abc");
+ CHECK(s_replaced2.substr(s_replaced2.size() - 4, 3) == "xyz");
+ CHECK(s_replaced2_ascii.substr(1, 3) == "abc");
+ CHECK(s_replaced2_ascii.substr(s_replaced2_ascii.size() - 4, 3) == "xyz");
+}
+
+void check_utf8string(bool success_expected, int byte1, int byte2, int byte3, int byte4);
+
+// create and check a JSON string with up to four UTF-8 bytes
+void check_utf8string(bool success_expected, int byte1, int byte2 = -1, int byte3 = -1, int byte4 = -1)
+{
+ if (++calls % 100000 == 0)
+ {
+ std::cout << calls << " of 1246225 UTF-8 strings checked" << std::endl; // NOLINT(performance-avoid-endl)
+ }
+
+ static std::string json_string;
+ json_string = "\"";
+
+ CAPTURE(byte1)
+ json_string += std::string(1, static_cast<char>(byte1));
+
+ if (byte2 != -1)
+ {
+ CAPTURE(byte2)
+ json_string += std::string(1, static_cast<char>(byte2));
+ }
+
+ if (byte3 != -1)
+ {
+ CAPTURE(byte3)
+ json_string += std::string(1, static_cast<char>(byte3));
+ }
+
+ if (byte4 != -1)
+ {
+ CAPTURE(byte4)
+ json_string += std::string(1, static_cast<char>(byte4));
+ }
+
+ json_string += "\"";
+
+ CAPTURE(json_string)
+
+ json _;
+ if (success_expected)
+ {
+ CHECK_NOTHROW(_ = json::parse(json_string));
+ }
+ else
+ {
+ CHECK_THROWS_AS(_ = json::parse(json_string), json::parse_error&);
+ }
+}
+} // namespace
+
+TEST_CASE("Unicode (5/5)" * doctest::skip())
+{
+ SECTION("RFC 3629")
+ {
+ /*
+ RFC 3629 describes in Sect. 4 the syntax of UTF-8 byte sequences as
+ follows:
+
+ A UTF-8 string is a sequence of octets representing a sequence of UCS
+ characters. An octet sequence is valid UTF-8 only if it matches the
+ following syntax, which is derived from the rules for encoding UTF-8
+ and is expressed in the ABNF of [RFC2234].
+
+ UTF8-octets = *( UTF8-char )
+ UTF8-char = UTF8-1 / UTF8-2 / UTF8-3 / UTF8-4
+ UTF8-1 = %x00-7F
+ UTF8-2 = %xC2-DF UTF8-tail
+ UTF8-3 = %xE0 %xA0-BF UTF8-tail / %xE1-EC 2( UTF8-tail ) /
+ %xED %x80-9F UTF8-tail / %xEE-EF 2( UTF8-tail )
+ UTF8-4 = %xF0 %x90-BF 2( UTF8-tail ) / %xF1-F3 3( UTF8-tail ) /
+ %xF4 %x80-8F 2( UTF8-tail )
+ UTF8-tail = %x80-BF
+ */
+
+ SECTION("UTF8-4 (xF4 x80-8F UTF8-tail UTF8-tail)")
+ {
+ SECTION("well-formed")
+ {
+ for (int byte1 = 0xF4; byte1 <= 0xF4; ++byte1)
+ {
+ for (int byte2 = 0x80; byte2 <= 0x8F; ++byte2)
+ {
+ for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
+ {
+ for (int byte4 = 0x80; byte4 <= 0xBF; ++byte4)
+ {
+ check_utf8string(true, byte1, byte2, byte3, byte4);
+ check_utf8dump(true, byte1, byte2, byte3, byte4);
+ }
+ }
+ }
+ }
+ }
+
+ SECTION("ill-formed: missing second byte")
+ {
+ for (int byte1 = 0xF4; byte1 <= 0xF4; ++byte1)
+ {
+ check_utf8string(false, byte1);
+ check_utf8dump(false, byte1);
+ }
+ }
+
+ SECTION("ill-formed: missing third byte")
+ {
+ for (int byte1 = 0xF4; byte1 <= 0xF4; ++byte1)
+ {
+ for (int byte2 = 0x80; byte2 <= 0x8F; ++byte2)
+ {
+ check_utf8string(false, byte1, byte2);
+ check_utf8dump(false, byte1, byte2);
+ }
+ }
+ }
+
+ SECTION("ill-formed: missing fourth byte")
+ {
+ for (int byte1 = 0xF4; byte1 <= 0xF4; ++byte1)
+ {
+ for (int byte2 = 0x80; byte2 <= 0x8F; ++byte2)
+ {
+ for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
+ {
+ check_utf8string(false, byte1, byte2, byte3);
+ check_utf8dump(false, byte1, byte2, byte3);
+ }
+ }
+ }
+ }
+
+ SECTION("ill-formed: wrong second byte")
+ {
+ for (int byte1 = 0xF4; byte1 <= 0xF4; ++byte1)
+ {
+ for (int byte2 = 0x00; byte2 <= 0xFF; ++byte2)
+ {
+ // skip correct second byte
+ if (0x80 <= byte2 && byte2 <= 0x8F)
+ {
+ continue;
+ }
+
+ for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
+ {
+ for (int byte4 = 0x80; byte4 <= 0xBF; ++byte4)
+ {
+ check_utf8string(false, byte1, byte2, byte3, byte4);
+ check_utf8dump(false, byte1, byte2, byte3, byte4);
+ }
+ }
+ }
+ }
+ }
+
+ SECTION("ill-formed: wrong third byte")
+ {
+ for (int byte1 = 0xF4; byte1 <= 0xF4; ++byte1)
+ {
+ for (int byte2 = 0x80; byte2 <= 0x8F; ++byte2)
+ {
+ for (int byte3 = 0x00; byte3 <= 0xFF; ++byte3)
+ {
+ // skip correct third byte
+ if (0x80 <= byte3 && byte3 <= 0xBF)
+ {
+ continue;
+ }
+
+ for (int byte4 = 0x80; byte4 <= 0xBF; ++byte4)
+ {
+ check_utf8string(false, byte1, byte2, byte3, byte4);
+ check_utf8dump(false, byte1, byte2, byte3, byte4);
+ }
+ }
+ }
+ }
+ }
+
+ SECTION("ill-formed: wrong fourth byte")
+ {
+ for (int byte1 = 0xF4; byte1 <= 0xF4; ++byte1)
+ {
+ for (int byte2 = 0x80; byte2 <= 0x8F; ++byte2)
+ {
+ for (int byte3 = 0x80; byte3 <= 0xBF; ++byte3)
+ {
+ for (int byte4 = 0x00; byte4 <= 0xFF; ++byte4)
+ {
+ // skip correct fourth byte
+ if (0x80 <= byte3 && byte3 <= 0xBF)
+ {
+ continue;
+ }
+
+ check_utf8string(false, byte1, byte2, byte3, byte4);
+ check_utf8dump(false, byte1, byte2, byte3, byte4);
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+}
+
+DOCTEST_CLANG_SUPPRESS_WARNING_POP
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