It's not Java/Scala, but another option is buf's proto parser written in
Go: https://github.com/bufbuild/protocompile.
Gary
On Wednesday, October 4, 2023 at 4:04:56 AM UTC-7 Ran Volkovich wrote:
> Hi,
> thanks for the the answer.
> this is great if i wont find any scala/java lib that does this i might use
> it thanks
>
> On Wednesday, October 4, 2023 at 1:42:06 PM UTC+3 Marc Gravell wrote:
>
>> If .NET is an option, protobuf-net has this (in the
>> protobuf-net.Reflection package):
>>
>> var schema = """
>>
>> syntax = "proto3";
>>
>> package helloworld;
>>
>> // My cool new message
>> message MyMessage {
>> string some_string = 1;
>> repeated int64 some_numbers = 2;
>> }
>> """;
>> var set = new FileDescriptorSet();
>> set.Add("some.proto", source: new StringReader(schema));
>> set.Process();
>>
>> foreach (var file in set.Files)
>> {
>> Console.WriteLine($"in {file.Name}");
>> foreach (var msg in file.MessageTypes)
>> {
>> Console.WriteLine(msg.Name);
>> foreach (var field in msg.Fields)
>> {
>> Console.WriteLine($"> {field.Name}");
>> }
>> }
>> Console.WriteLine();
>> }
>>
>>
>> This is entirely managed code (i.e. no "shell to protoc"). The API is
>> basically identical to the Google one - the idea is that the type system is
>> binary compatible (i.e. you can serialize it as protobuf and you'd get the
>> same thing that protoc would give, in binary mode)
>>
>> On Wed, 4 Oct 2023 at 10:02, 'Ran Volkovich' via Protocol Buffers <
>> [email protected]> wrote:
>>
>>> Hi,
>>> There is a way to transform .proto file like
>>> syntax = "proto3";
>>>
>>> package helloworld;
>>>
>>> // My cool new message.
>>> message MyMessage {
>>> string some_string = 1;
>>> repeated int64 some_numbers = 2;
>>> }
>>> to FileDescriptorProto class from com.google.protobuf jar (or any other
>>> proto lib that can represent the proto schema)
>>> without to use protoc to generate descriptor before?
>>>
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>>>
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>>> .
>>>
>>
>>
>> --
>> Regards,
>>
>> Marc
>>
>
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