API to generate .rs files

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

Example code:

With stable rust-protobuf:

extern crate protobuf_codegen_pure;

protobuf_codegen_pure::run(protobuf_codegen_pure::Args {
    out_dir: "src/protos",
    input: &["protos/a.proto", "protos/b.proto"],
    includes: &["protos"],
    customize: protobuf_codegen_pure::Customize {
      ..Default::default()
    },
}).expect("protoc");

With rust-protobuf from master:

extern crate protobuf_codegen_pure;

protobuf_codegen_pure::Args::new()
    .out_dir("src/protos")
    .inputs(&["protos/a.proto", "protos/b.proto"])
    .include("protos")
    .run()
    .expect("protoc");

And in Cargo.toml:

[build-dependencies]
protobuf-codegen-pure = "2.3"

The alternative is to use protoc-rust crate, which relies on protoc command to parse descriptors. Both crates should produce the same result, otherwise please file a bug report.