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//
// Copyright (c) 2022 Dmitry Arkhipov (grisumbras@yandex.ru)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
// Official repository: https://github.com/boostorg/json
//
#include <boost/json/detail/utf8.hpp>
#include <boost/json/string_view.hpp>
#include "test_suite.hpp"
namespace boost {
namespace json {
class utf8_test
{
public:
void
testLoadLittleEndian()
{
BOOST_TEST(
detail::load_little_endian<4>("\x01\x02\x03\x04\xFF")
== 0x04030201);
BOOST_TEST(
detail::load_little_endian<4>("\x12\x34\x56\x78\xFF")
== 0x78563412);
BOOST_TEST(
detail::load_little_endian<4>("\xFE\xDC\xBA\x98\xFF")
== 0x98BADCFE);
BOOST_TEST(
detail::load_little_endian<3>("\x12\x45\xFE\xFF")
== 0x00FE4512);
BOOST_TEST(
detail::load_little_endian<3>("\xE0\xA0\x80\xFF")
== 0x0080A0E0);
BOOST_TEST(
detail::load_little_endian<2>("\x37\xFC\xFF")
== 0x0000FC37);
BOOST_TEST(detail::load_little_endian<1>("\xF1\xFF") == 0x000000F1);
}
void
testClassifyUtf8()
{
BOOST_TEST((detail::classify_utf8('\x00') & 0xFF) == 0);
// from code point U+0080 (0xC280 in UTF-8)
BOOST_TEST((detail::classify_utf8('\xC2') & 0xFF) == 2);
// from code point U+07FF (0xDFBF in UTF-8)
BOOST_TEST((detail::classify_utf8('\xDF') & 0xFF) == 2);
// from code point U+0800 (0xE0A080 in UTF-8)
BOOST_TEST((detail::classify_utf8('\xE0') & 0xFF) == 3);
// from code point U+0FFFF (0xEFBFBF in UTF-8)
BOOST_TEST((detail::classify_utf8('\xEF') & 0xFF) == 3);
// from code point U+010000 (0xF0908080 in UTF-8)
BOOST_TEST((detail::classify_utf8('\xF0') & 0xFF) == 4);
// from code point U+010000 (0xF0908080 in UTF-8)
BOOST_TEST((detail::classify_utf8('\xF0') & 0xFF) == 4);
// from code point U+010FFFF (0xF48FBFBF in UTF-8)
BOOST_TEST((detail::classify_utf8('\xF4') & 0xFF) == 4);
}
void
testIsValidUtf8()
{
auto is_valid_utf8 = [](char const* str) {
std::uint16_t first = detail::classify_utf8(*str);
return detail::is_valid_utf8(str, first);
};
BOOST_TEST(is_valid_utf8("\xC2\x80")); // code point U+0080
BOOST_TEST(is_valid_utf8("\xDF\xBF")); // code point U+07FF
BOOST_TEST(is_valid_utf8("\xE0\xA0\x80")); // code point U+0800
BOOST_TEST(is_valid_utf8("\xEF\xBF\xBF")); // from code point U+0FFFF
BOOST_TEST(is_valid_utf8("\xF0\x90\x80\x80")); // code point U+010000
BOOST_TEST(is_valid_utf8("\xF4\x8F\xBF\xBF")); // code point U+010FFFF
BOOST_TEST(! is_valid_utf8("\x80"));
BOOST_TEST(! is_valid_utf8("\xBF"));
BOOST_TEST(! is_valid_utf8("\xDF\x00"));
BOOST_TEST(! is_valid_utf8("\xDF\x7F"));
BOOST_TEST(! is_valid_utf8("\xDF\xFF"));
BOOST_TEST(! is_valid_utf8("\xE0\x00\x80"));
BOOST_TEST(! is_valid_utf8("\xE1\x7F\x80"));
BOOST_TEST(! is_valid_utf8("\xE4\xFF\x80"));
BOOST_TEST(! is_valid_utf8("\xE8\x80\x00"));
BOOST_TEST(! is_valid_utf8("\xEC\x80\x7F"));
BOOST_TEST(! is_valid_utf8("\xEF\x80\xFF"));
BOOST_TEST(! is_valid_utf8("\xF0\x00\x80\x80"));
BOOST_TEST(! is_valid_utf8("\xF1\x7F\x80\x80"));
BOOST_TEST(! is_valid_utf8("\xF2\xFF\x80\x80"));
BOOST_TEST(! is_valid_utf8("\xF3\x80\x00\x80"));
BOOST_TEST(! is_valid_utf8("\xF4\x80\x7F\x80"));
BOOST_TEST(! is_valid_utf8("\xF0\x80\xFF\x80"));
BOOST_TEST(! is_valid_utf8("\xF1\x80\x80\x00"));
BOOST_TEST(! is_valid_utf8("\xF2\x80\x80\x7F"));
BOOST_TEST(! is_valid_utf8("\xF3\x80\x80\xFF"));
}
void
testUtf8Sequence()
{
char const* str = "\xE0\xA0\x80\00\00";
detail::utf8_sequence seq;
seq.save(str, std::strlen(str));
BOOST_TEST(seq.complete());
BOOST_TEST(seq.length() == 3);
BOOST_TEST(seq.needed() == 0);
BOOST_TEST(string_view(seq.data(), 3) == str);
BOOST_TEST(seq.valid());
seq.save(str, 1);
BOOST_TEST(!seq.complete());
BOOST_TEST(seq.length() == 3);
BOOST_TEST(seq.needed() == 2);
BOOST_TEST(string_view(seq.data(), 1) == string_view(str, 1));
seq.append(str + 1, 1);
BOOST_TEST(!seq.complete());
BOOST_TEST(seq.length() == 3);
BOOST_TEST(seq.needed() == 1);
BOOST_TEST(string_view(seq.data(), 2) == string_view(str, 2));
seq.append(str + 2, 2);
BOOST_TEST(seq.complete());
BOOST_TEST(seq.length() == 3);
BOOST_TEST(seq.needed() == 0);
BOOST_TEST(string_view(seq.data(), 3) == str);
BOOST_TEST(seq.valid());
seq.append(str + 3, 1);
BOOST_TEST(seq.complete());
BOOST_TEST(seq.length() == 3);
BOOST_TEST(seq.needed() == 0);
BOOST_TEST(string_view(seq.data(), 3) == str);
BOOST_TEST(seq.valid());
str = "\xF0\x90\x80\x80";
seq.save(str, std::strlen(str));
BOOST_TEST(seq.complete());
BOOST_TEST(seq.length() == 4);
BOOST_TEST(seq.needed() == 0);
BOOST_TEST(string_view(seq.data(), 4) == str);
BOOST_TEST(seq.valid());
str = "\xF0\x90\x80\xC0";
seq.save(str, std::strlen(str));
BOOST_TEST(seq.complete());
BOOST_TEST(seq.length() == 4);
BOOST_TEST(seq.needed() == 0);
BOOST_TEST(string_view(seq.data(), 4) == str);
BOOST_TEST(!seq.valid());
}
void
run()
{
testLoadLittleEndian();
testClassifyUtf8();
testIsValidUtf8();
testUtf8Sequence();
}
};
TEST_SUITE(utf8_test, "boost.json.utf8");
} // namespace json
} // namespace boost
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