On Wed, Jan 4, 2017 at 8:38 AM, Jamie Sherman <[email protected]>
wrote:
> I have a proto message that I have defined. I'm consuming the message on
> OSX using C++ and producing it on windows using C#.
> I'm using release 3.0.0 of Google.protobuf (NuGet on windows, compiled and
> built on OSX).
>
> I have read that Protobuf stores UTF-8 strings. I realize that native C#
> strings are UTF-16. I assumed the C# library would
> take care of the conversion from UTF-16 to UTF-8 but that doesn't seem to
> be the case. The online examples that I've found
> seem to just assign a string the variable (wiffName) but that doesn't seem
> to work.
>
> Can someone point out where I'm going wrong and how get around this? If
> the library doesn't handle the conversion how should
> I go about changing a UTF-16 string into a UTF-8 string in C#? Any help is
> really appreciated
>
>
> Proto File:
>
> message XicSetHeader{
>
> int64 TotalXicSets = 1;
>
> string wiffName = 2;
>
> }
>
>
>
> C# Code:
>
> var xsetHeader = new XicSetHeader();
> xsetHeader.TotalXicSets = xsetVec.Count;
> xsetHeader.WiffName = "myWiffNameHolder";
>
> using (var stream = File.Create(FileOutName(oPath))) //
> MemoryStream stream = new MemoryStream())
> {
> xsetHeader.WriteTo(stream);
> }
>
>
> C++ Code:
> // This is being passed a pointer ifstream in a good state to the
> encoded proto message
>
> XicContainer::XicContainer(std::istream *in): m_xheader(new XicHeader
> ())
>
> {
>
> // m_xheader is a pointer of type XicHeader and initialized above
>
> m_xheader->ParseFromIstream(in);
>
> }
>
Can you check if the data size is the same on both ends? If you are writing
the data into a file, make sure you are writing/reading it in binary mode.
>
> C++ Error Message:
>
> *[libprotobuf ERROR google/protobuf/wire_format_lite.cc:532] String field
> 'XicHeader.wiffName' contains invalid UTF-8 data when parsing a protocol
> buffer. Use the 'bytes' type if you intend to send raw bytes.*
>
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