This parses .proto files. It produces output based on custom generators. It comes with a generator of Mongo DB schema.

Based on https://github.com/Tand0/javaccProto.

Build

gradle clean build

Run

To invoke directly,

1. Download apache-commons-cli.jar
2. Run: java -cp build/libs/protopick.jar -cp apache-commons-cli.jar io.github.protopick.compile.Run. That gives you help on the parameters.

To invoke from Gradle, run: gradle run --args='actual arguments' For example:

gradle run "--args=-I proto-test -f User.proto -p io.github.protopick.generate.MessagesMongo" --quiet > User.js
echo "db = db.getSiblingDB('User');" | cat /dev/stdin User.js | mongo

For help on the actual arguments, invoke: gradle run or gradle run --args='--help'

Limitations

Far from complete. It's not complete, but it supports enum, message, repeated and basic built-in types (string, int32, int64, bool).

For now it fails if there's an external import or type (from Google), except for google/protobuf/any.proto (which is OK). So comment out imports like google/protobuf/field_mask.proto and their usage.

If you define a message called Any, you're in trouble (regardless of whether you import google/protobuf/any.proto or not).

The plugin API is likely to change.

We don't support reading from standard input or writing to standard output. If you need that, pass -f /dev/stdin (and --I /dev), and/or -o /dev and (TODO:) use a plugin that specifies output filename to be stdout.

For later: gradle run --args='-I proto-test -g io.github.protopick.generate.MessagesMongo -ep OuterMost=outer_most.js relative-sub-types.proto'