Re: Generating.proto files from java source file
I'll try to implement a simple tool to decompile messages, if I succeed, I post the solution here. Thank you On Thu, Oct 8, 2009 at 4:02 PM, Henner Zeller wrote: > Hi, > On Thu, Oct 8, 2009 at 11:51, Kenton Varda wrote: > > Hmm, that's true. Although I'm not sure if there's actual code for > writing > > the .proto file in Java. In C++, descriptors have a DebugString() method > > which returns a compilable .proto file. > > So it would be a matter of either re-implementing the DebugString in > Java or dumping out the descriptor from the Java code (after all, it > is just a proto buffer), re-read that and DebugString it. > (maybe protoc could have a > 'read-binary-descriptor-and-dump-it-as-protofile' option ;) ). > --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. To post to this group, send email to protobuf@googlegroups.com To unsubscribe from this group, send email to protobuf+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/protobuf?hl=en -~--~~~~--~~--~--~---
Re: Generating.proto files from java source file
Hi, On Thu, Oct 8, 2009 at 11:51, Kenton Varda wrote: > Hmm, that's true. Although I'm not sure if there's actual code for writing > the .proto file in Java. In C++, descriptors have a DebugString() method > which returns a compilable .proto file. So it would be a matter of either re-implementing the DebugString in Java or dumping out the descriptor from the Java code (after all, it is just a proto buffer), re-read that and DebugString it. (maybe protoc could have a 'read-binary-descriptor-and-dump-it-as-protofile' option ;) ). --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. To post to this group, send email to protobuf@googlegroups.com To unsubscribe from this group, send email to protobuf+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/protobuf?hl=en -~--~~~~--~~--~--~---
Re: Generating.proto files from java source file
Hmm, that's true. Although I'm not sure if there's actual code for writing the .proto file in Java. In C++, descriptors have a DebugString() method which returns a compilable .proto file. On Thu, Oct 8, 2009 at 11:41 AM, Henner Zeller wrote: > On Thu, Oct 8, 2009 at 11:32, Kenton Varda wrote: > > Yikes. That's kind of like someone left you with just .class files > without > > the .java files. > > If you look at the code, though, you will notice that there are comments > in > > it defining each field, like: > > // optional int32 i = 1; > > These should be the exact field definitions as they might appear in the > > .proto file. So if you extract those -- keeping track of which inner > class > > each comment appeared in -- you should be able to reproduce the original > > .proto file. > > Shouldn't it be possible to extract the descriptor from the java class > and then use reflection to emit a proto-file ? > --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. To post to this group, send email to protobuf@googlegroups.com To unsubscribe from this group, send email to protobuf+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/protobuf?hl=en -~--~~~~--~~--~--~---
Re: Generating.proto files from java source file
On Thu, Oct 8, 2009 at 11:32, Kenton Varda wrote: > Yikes. That's kind of like someone left you with just .class files without > the .java files. > If you look at the code, though, you will notice that there are comments in > it defining each field, like: > // optional int32 i = 1; > These should be the exact field definitions as they might appear in the > .proto file. So if you extract those -- keeping track of which inner class > each comment appeared in -- you should be able to reproduce the original > .proto file. Shouldn't it be possible to extract the descriptor from the java class and then use reflection to emit a proto-file ? --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. To post to this group, send email to protobuf@googlegroups.com To unsubscribe from this group, send email to protobuf+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/protobuf?hl=en -~--~~~~--~~--~--~---
Re: Generating.proto files from java source file
Yikes. That's kind of like someone left you with just .class files without the .java files. If you look at the code, though, you will notice that there are comments in it defining each field, like: // optional int32 i = 1; These should be the exact field definitions as they might appear in the .proto file. So if you extract those -- keeping track of which inner class each comment appeared in -- you should be able to reproduce the original .proto file. On Thu, Oct 8, 2009 at 6:34 AM, grasshopper wrote: > Hi all, a guy that isn't working in my company anymore has defined some > protocol buffer messages that we still use. We need to extend these messages > now, but we don't have the .proto file. Is there a straight way to generate > the proto files from the java classes? How could I do this? > Thanks > > > > > --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. To post to this group, send email to protobuf@googlegroups.com To unsubscribe from this group, send email to protobuf+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/protobuf?hl=en -~--~~~~--~~--~--~---
