1. For the person example, I create a descriptor as follows:
"E:\Desktop\prototype_MAIN\protoc.exe" person.proto --
descriptor_set_out=msg.protocomp
2. I create a Person object and serialized it to file. "person.pb"
3. I want to write a program to "print" the Person object using ONLY
its descriptor. I know there is a way, but I cannot seem to get all
the APIs correct.
4. Here is what I have done.
ifstream desc_file("E:\\Visual Studio 2008\\Projects\
\proto_buf1\\msg.protocomp",ios::in);
if (desc_file.bad()) {
std::cout << "desc file not read...exiting" << std::endl;
return -1;
}
FileDescriptorSet f;
f.ParseFromIstream(&desc_file);
f.PrintDebugString();
FileDescriptorProto fdp = f.file(0);
fdp.PrintDebugString();
DescriptorProto dp = fdp.message_type(0);
dp.PrintDebugString();
Now what ? I need a copy of "Message" that I can pass as input to
Parse, I think. I also may need DynamicMessage etc, and possibly also
the following:
ifstream input_file("E:\\Visual Studio 2008\\Projects\
\proto_buf1\\Debug\\person.pb",ios::in);
if (input_file.bad()) {
std::cout << "file not read...exiting" << std::endl;
return -1;
}
IstreamInputStream is(&input_file);
TextFormat::Parse(&is,(msg));
msg->PrintDebugString();
Any simple example is GREATLY appreciated. Thanks.
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