protoc-gen-swagger: allow `-output` dir

[anilcse]

Current protoc-gen-swagger doesn't have support for custom directory for generated files. It generates swagger files in the same directory structure as proto files. Moving them into a separate folder is an extra task for developers. Having a -output flag to specify the output dir can solve this and improve the experience

[johanbrandhorst]

Hi, thanks for your interest in the project! Isn't this already supported? Looking at the README example:

protoc -I . --swagger_out ./gen/swagger --swagger_opt logtostderr=true your/service/v1/your_service.proto

The value provided to --swagger_out is where the output of the file should go (in this case, ./gen/swagger). Does that work for you?

[anilcse]

Thank you very much @johanbrandhorst for your help. I was using it wrongly.