API to generate .rs files

API to generate .rs files to be used e. g. from build.rs.

Example code:

extern crate protoc_rust;

use protoc_rust::Customize;

fn main() {
    protoc_rust::Codegen::new()
        .out_dir("src/protos")
        .inputs(&["protos/a.proto", "protos/b.proto"])
        .include("protos")
        .run()
        .expect("protoc");
}

And in Cargo.toml:

[build-dependencies]
protoc-rust = "2.0"

Note 1: This API requires protoc command present in $PATH. Although protoc-gen-rust command is not needed.

Note 2: Is advisable that protoc-rust build-dependecy version be the same as protobuf dependency.

The alternative is to use pure-rust .proto parser and code generator.

lib.rs:

API to generate .rs files.

This API requires protoc command present in $PATH or passed explicitly to Codegen object.

extern crate protoc_rust;

fn main() {
    protoc_rust::Codegen::new()
        .out_dir("src/protos")
        .inputs(&["protos/a.proto", "protos/b.proto"])
        .include("protos")
        .run()
        .expect("Running protoc failed.");
}

It is advisable that protoc-rust build-dependecy version be the same as protobuf dependency.

The alternative is to use protobuf-codegen-pure.