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#include <sstream>
#include "handler_test.h"
#include "yaml-cpp/yaml.h" // IWYU pragma: keep
#include "gtest/gtest.h"
using ::testing::_;
using ::testing::InSequence;
namespace YAML {
namespace {
typedef void (*EncodingFn)(std::ostream&, int);
inline char Byte(int ch) {
return static_cast<char>(
static_cast<unsigned char>(static_cast<unsigned int>(ch)));
}
void EncodeToUtf8(std::ostream& stream, int ch) {
if (ch <= 0x7F) {
stream << Byte(ch);
} else if (ch <= 0x7FF) {
stream << Byte(0xC0 | (ch >> 6));
stream << Byte(0x80 | (ch & 0x3F));
} else if (ch <= 0xFFFF) {
stream << Byte(0xE0 | (ch >> 12));
stream << Byte(0x80 | ((ch >> 6) & 0x3F));
stream << Byte(0x80 | (ch & 0x3F));
} else if (ch <= 0x1FFFFF) {
stream << Byte(0xF0 | (ch >> 18));
stream << Byte(0x80 | ((ch >> 12) & 0x3F));
stream << Byte(0x80 | ((ch >> 6) & 0x3F));
stream << Byte(0x80 | (ch & 0x3F));
}
}
bool SplitUtf16HighChar(std::ostream& stream, EncodingFn encoding, int ch) {
int biasedValue = ch - 0x10000;
if (biasedValue < 0) {
return false;
}
int high = 0xD800 | (biasedValue >> 10);
int low = 0xDC00 | (biasedValue & 0x3FF);
encoding(stream, high);
encoding(stream, low);
return true;
}
void EncodeToUtf16LE(std::ostream& stream, int ch) {
if (!SplitUtf16HighChar(stream, &EncodeToUtf16LE, ch)) {
stream << Byte(ch & 0xFF) << Byte(ch >> 8);
}
}
void EncodeToUtf16BE(std::ostream& stream, int ch) {
if (!SplitUtf16HighChar(stream, &EncodeToUtf16BE, ch)) {
stream << Byte(ch >> 8) << Byte(ch & 0xFF);
}
}
void EncodeToUtf32LE(std::ostream& stream, int ch) {
stream << Byte(ch & 0xFF) << Byte((ch >> 8) & 0xFF) << Byte((ch >> 16) & 0xFF)
<< Byte((ch >> 24) & 0xFF);
}
void EncodeToUtf32BE(std::ostream& stream, int ch) {
stream << Byte((ch >> 24) & 0xFF) << Byte((ch >> 16) & 0xFF)
<< Byte((ch >> 8) & 0xFF) << Byte(ch & 0xFF);
}
class EncodingTest : public HandlerTest {
protected:
void SetUpEncoding(EncodingFn encoding, bool declareEncoding) {
if (declareEncoding) {
encoding(m_yaml, 0xFEFF);
}
AddEntry(encoding, 0x0021, 0x007E); // Basic Latin
AddEntry(encoding, 0x00A1, 0x00FF); // Latin-1 Supplement
AddEntry(encoding, 0x0660, 0x06FF); // Arabic (largest contiguous block)
// CJK unified ideographs (multiple lines)
AddEntry(encoding, 0x4E00, 0x4EFF);
AddEntry(encoding, 0x4F00, 0x4FFF);
AddEntry(encoding, 0x5000, 0x51FF); // 512 character line
AddEntry(encoding, 0x5200, 0x54FF); // 768 character line
AddEntry(encoding, 0x5500, 0x58FF); // 1024 character line
AddEntry(encoding, 0x103A0, 0x103C3); // Old Persian
m_yaml.seekg(0, std::ios::beg);
}
void Run() {
InSequence sequence;
EXPECT_CALL(handler, OnDocumentStart(_));
EXPECT_CALL(handler, OnSequenceStart(_, "?", 0, EmitterStyle::Block));
for (std::size_t i = 0; i < m_entries.size(); i++) {
EXPECT_CALL(handler, OnScalar(_, "!", 0, m_entries[i]));
}
EXPECT_CALL(handler, OnSequenceEnd());
EXPECT_CALL(handler, OnDocumentEnd());
Parse(m_yaml.str());
}
private:
std::stringstream m_yaml;
std::vector<std::string> m_entries;
void AddEntry(EncodingFn encoding, int startCh, int endCh) {
encoding(m_yaml, '-');
encoding(m_yaml, ' ');
encoding(m_yaml, '|');
encoding(m_yaml, '\n');
encoding(m_yaml, ' ');
encoding(m_yaml, ' ');
std::stringstream entry;
for (int ch = startCh; ch <= endCh; ++ch) {
encoding(m_yaml, ch);
EncodeToUtf8(entry, ch);
}
encoding(m_yaml, '\n');
EncodeToUtf8(entry, '\n');
m_entries.push_back(entry.str());
}
};
TEST_F(EncodingTest, UTF8_noBOM) {
SetUpEncoding(&EncodeToUtf8, false);
Run();
}
TEST_F(EncodingTest, UTF8_BOM) {
SetUpEncoding(&EncodeToUtf8, true);
Run();
}
TEST_F(EncodingTest, UTF16LE_noBOM) {
SetUpEncoding(&EncodeToUtf16LE, false);
Run();
}
TEST_F(EncodingTest, UTF16LE_BOM) {
SetUpEncoding(&EncodeToUtf16LE, true);
Run();
}
TEST_F(EncodingTest, UTF16BE_noBOM) {
SetUpEncoding(&EncodeToUtf16BE, false);
Run();
}
TEST_F(EncodingTest, UTF16BE_BOM) {
SetUpEncoding(&EncodeToUtf16BE, true);
Run();
}
TEST_F(EncodingTest, UTF32LE_noBOM) {
SetUpEncoding(&EncodeToUtf32LE, false);
Run();
}
TEST_F(EncodingTest, UTF32LE_BOM) {
SetUpEncoding(&EncodeToUtf32LE, true);
Run();
}
TEST_F(EncodingTest, UTF32BE_noBOM) {
SetUpEncoding(&EncodeToUtf32BE, false);
Run();
}
TEST_F(EncodingTest, UTF32BE_BOM) {
SetUpEncoding(&EncodeToUtf32BE, true);
Run();
}
}
}
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