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Minimal test - lines (119, 146)

Code

void nsPrimitiveHelpers::CreateDataFromPrimitive(const nsACString& aFlavor,
                                                 nsISupports* aPrimitive,
                                                 void** aDataBuff,
                                                 uint32_t* aDataLen) {
  if (!aDataBuff) return;

  *aDataBuff = nullptr;
  *aDataLen = 0;

  if (aFlavor.EqualsLiteral(kTextMime) ||
      aFlavor.EqualsLiteral(kCustomTypesMime)) {
    nsCOMPtr plainText(do_QueryInterface(aPrimitive));
    if (plainText) {
      nsAutoCString data;
      plainText->GetData(data);
      *aDataBuff = ToNewCString(data);
      *aDataLen = data.Length() * sizeof(char);
    }
  } else {
    nsCOMPtr doubleByteText(do_QueryInterface(aPrimitive));
    if (doubleByteText) {
      nsAutoString data;
      doubleByteText->GetData(data);
      *aDataBuff = ToNewUnicode(data);
      *aDataLen = data.Length() * sizeof(char16_t);
    }
  }
}

Minimal test - lines (40, 79)

Code

void nsPrimitiveHelpers ::CreatePrimitiveForData(const nsACString& aFlavor,
                                                 const void* aDataBuff,
                                                 uint32_t aDataLen,
                                                 nsISupports** aPrimitive) {
  if (!aPrimitive) return;

  if (aFlavor.EqualsLiteral(kTextMime) ||
      aFlavor.EqualsLiteral(kNativeHTMLMime) ||
      aFlavor.EqualsLiteral(kRTFMime) ||
      aFlavor.EqualsLiteral(kCustomTypesMime)) {
    nsCOMPtr primitive =
        do_CreateInstance(NS_SUPPORTS_CSTRING_CONTRACTID);
    if (primitive) {
      const char* start = reinterpret_cast(aDataBuff);
      primitive->SetData(Substring(start, start + aDataLen));
      NS_ADDREF(*aPrimitive = primitive);
    }
  } else {
    nsCOMPtr primitive =
        do_CreateInstance(NS_SUPPORTS_STRING_CONTRACTID);
    if (primitive) {
      if (aDataLen % 2) {
        auto buffer = mozilla::MakeUnique(aDataLen + 1);
        if (!MOZ_LIKELY(buffer)) return;

        memcpy(buffer.get(), aDataBuff, aDataLen);
        buffer[aDataLen] = 0;
        const char16_t* start = reinterpret_cast(buffer.get());
        // recall that length takes length as characters, not bytes
        primitive->SetData(Substring(start, start + (aDataLen + 1) / 2));
      } else {
        const char16_t* start = reinterpret_cast(aDataBuff);
        // recall that length takes length as characters, not bytes
        primitive->SetData(Substring(start, start + (aDataLen / 2)));
      }
      NS_ADDREF(*aPrimitive = primitive);
    }
  }

}  // CreatePrimitiveForData

Minimal test - lines (158, 197)

Code

nsresult nsLinebreakHelpers ::ConvertPlatformToDOMLinebreaks(
    const nsACString& inFlavor, void** ioData, int32_t* ioLengthInBytes) {
  NS_ASSERTION(ioData && *ioData && ioLengthInBytes, "Bad Params");
  if (!(ioData && *ioData && ioLengthInBytes)) return NS_ERROR_INVALID_ARG;

  nsresult retVal = NS_OK;

  if (inFlavor.EqualsLiteral(kTextMime) || inFlavor.EqualsLiteral(kRTFMime)) {
    char* buffAsChars = reinterpret_cast(*ioData);
    char* oldBuffer = buffAsChars;
    retVal = nsLinebreakConverter::ConvertLineBreaksInSitu(
        &buffAsChars, nsLinebreakConverter::eLinebreakAny,
        nsLinebreakConverter::eLinebreakContent, *ioLengthInBytes,
        ioLengthInBytes);
    if (NS_SUCCEEDED(retVal)) {
      if (buffAsChars != oldBuffer)  // check if buffer was reallocated
        free(oldBuffer);
      *ioData = buffAsChars;
    }
  } else if (inFlavor.EqualsLiteral("image/jpeg")) {
    // I'd assume we don't want to do anything for binary data....
  } else {
    char16_t* buffAsUnichar = reinterpret_cast(*ioData);
    char16_t* oldBuffer = buffAsUnichar;
    int32_t newLengthInChars;
    retVal = nsLinebreakConverter::ConvertUnicharLineBreaksInSitu(
        &buffAsUnichar, nsLinebreakConverter::eLinebreakAny,
        nsLinebreakConverter::eLinebreakContent,
        *ioLengthInBytes / sizeof(char16_t), &newLengthInChars);
    if (NS_SUCCEEDED(retVal)) {
      if (buffAsUnichar != oldBuffer)  // check if buffer was reallocated
        free(oldBuffer);
      *ioData = buffAsUnichar;
      *ioLengthInBytes = newLengthInChars * sizeof(char16_t);
    }
  }

  return retVal;

}  // ConvertPlatformToDOMLinebreaks

Minimal test - lines (86, 110)

Code

void nsPrimitiveHelpers ::CreatePrimitiveForCFHTML(const void* aDataBuff,
                                                   uint32_t* aDataLen,
                                                   nsISupports** aPrimitive) {
  if (!aPrimitive) return;

  nsCOMPtr primitive =
      do_CreateInstance(NS_SUPPORTS_STRING_CONTRACTID);
  if (!primitive) return;

  // We need to duplicate the input buffer, since the removal of linebreaks
  // might reallocte it.
  void* utf8 = moz_xmalloc(*aDataLen);
  memcpy(utf8, aDataBuff, *aDataLen);
  int32_t signedLen = static_cast(*aDataLen);
  nsLinebreakHelpers::ConvertPlatformToDOMLinebreaks(
      nsDependentCString(kTextMime), &utf8, &signedLen);
  *aDataLen = signedLen;

  nsAutoString str(
      NS_ConvertUTF8toUTF16(reinterpret_cast(utf8), *aDataLen));
  free(utf8);
  *aDataLen = str.Length() * sizeof(char16_t);
  primitive->SetData(str);
  NS_ADDREF(*aPrimitive = primitive);
}