chore: remove unused Unicode::UTF32ToUTF8

src/lib/base/Unicode.cpp

@@ -227,16 +227,6 @@ std::string Unicode::UTF16ToUTF8(const std::string_view &src, bool *errors)
   return doUTF16ToUTF8(reinterpret_cast<const uint8_t *>(src.data()), n, errors);
 }
 
-std::string Unicode::UTF32ToUTF8(const std::string_view &src, bool *errors)
-{
-  // default to success
-  resetError(errors);
-
-  // convert
-  uint32_t n = (uint32_t)src.size() >> 2;
-  return doUTF32ToUTF8(reinterpret_cast<const uint8_t *>(src.data()), n, errors);
-}
-
 std::string Unicode::doUCS2ToUTF8(const uint8_t *data, uint32_t n, bool *errors)
 {
   // make some space
@@ -368,48 +358,6 @@ std::string Unicode::doUTF16ToUTF8(const uint8_t *data, uint32_t n, bool *errors
   return dst;
 }
 
-std::string Unicode::doUTF32ToUTF8(const uint8_t *data, uint32_t n, bool *errors)
-{
-  // make some space
-  std::string dst;
-  dst.reserve(n);
-
-  // check if first character is 0xfffe or 0xfeff
-  bool byteSwapped = false;
-  if (n >= 1) {
-    switch (decode32(data, false)) {
-    case 0x0000feff:
-      data += 4;
-      --n;
-      break;
-
-    case 0x0000fffe:
-      byteSwapped = true;
-      data += 4;
-      --n;
-      break;
-
-    default:
-      break;
-    }
-  }
-#ifdef WORDS_BIGENDIAN
-  byteSwapped = !byteSwapped;
-#endif
-  // convert each character
-  for (; n > 0; --n) {
-    auto c = decode32(data, byteSwapped);
-    if (c >= 0x00110000) {
-      setError(errors);
-      c = s_replacement;
-    }
-    toUTF8(dst, c, errors);
-    data += 4;
-  }
-
-  return dst;
-}
-
 uint32_t Unicode::fromUTF8(const uint8_t *&data, uint32_t &n)
 {
   assert(data != nullptr);

src/lib/base/Unicode.h

@@ -81,13 +81,6 @@ public:
   */
   static std::string UTF16ToUTF8(const std::string_view &, bool *errors = nullptr);
 
-  //! Convert from UTF-32 to UTF-8
-  /*!
-  Convert from UTF-32 to UTF-8.  If errors is not nullptr then *errors is
-  set to true iff any character could not be decoded.
-  */
-  static std::string UTF32ToUTF8(const std::string_view &, bool *errors = nullptr);
-
   //@}
 
 private:
@@ -95,7 +88,6 @@ private:
   static std::string doUCS2ToUTF8(const uint8_t *src, uint32_t n, bool *errors);
   static std::string doUCS4ToUTF8(const uint8_t *src, uint32_t n, bool *errors);
   static std::string doUTF16ToUTF8(const uint8_t *src, uint32_t n, bool *errors);
-  static std::string doUTF32ToUTF8(const uint8_t *src, uint32_t n, bool *errors);
 
   // convert characters to/from UTF8
   static uint32_t fromUTF8(const uint8_t *&src, uint32_t &size);

src/unittests/base/UnicodeTests.cpp

@@ -14,15 +14,6 @@ void UnicodeTests::initTestCase()
   m_log.setFilter(LogLevel::Debug2);
 }
 
-void UnicodeTests::UTF32ToUTF8()
-{
-  bool errors;
-  auto result = Unicode::UTF32ToUTF8(std::string("h\0\0\0e\0\0\0l\0\0\0l\0\0\0o\0\0\0", 20), &errors);
-
-  QVERIFY(!errors);
-  QCOMPARE(result.c_str(), "hello");
-}
-
 void UnicodeTests::UTF16ToUTF8()
 {
   bool errors;

src/unittests/base/UnicodeTests.h

@@ -13,7 +13,6 @@ class UnicodeTests : public QObject
   Q_OBJECT
 private Q_SLOTS:
   void initTestCase();
-  void UTF32ToUTF8();
   void UTF16ToUTF8();
 
 private: