first commit

.gitignore

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+/target
+/protobufs

Cargo.toml

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+[package]
+name = "meshtastic-protobuf"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+bytes = "1.5.0"
+prost = "0.12.3"
+
+[build-dependencies]
+git2 = "0.18.1"
+prost-build = "0.12.3"

build.rs

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+extern crate git2;
+extern crate prost_build;
+
+use git2::Repository;
+use prost_build::compile_protos;
+use std::path::Path;
+
+fn update_repo(path: &Path) -> Result<(), git2::Error> {
+    let repo = Repository::open(path)?;
+    let mut remote = repo.find_remote("origin")?;
+    let refspecs: [&str; 0] = [];
+    remote.fetch(&refspecs, None, None)
+}
+
+fn main() {
+    let repo = "https://github.com/meshtastic/protobufs.git";
+    let path = Path::new("protobufs");
+
+    if path.exists() {
+        if let Err(e) = update_repo(path) {
+            eprintln!("Error could not update meshtastic protobuf repo");
+            eprintln!("{e}");
+            std::process::exit(1);
+        }
+    } else {
+        if let Err(e) = Repository::clone(repo, path) {
+            eprintln!("Error could not clone meshtastic protobuf repo");
+            eprintln!("{e}");
+            std::process::exit(1);
+        }
+    }
+
+    let protos = &["protobufs/meshtastic/mesh.proto"];
+    let includes = &["protobufs"];
+
+    if let Err(e) = compile_protos(protos, includes) {
+        eprintln!("Error could not compile protobufs");
+        eprintln!("{e}");
+        std::process::exit(1);
+    }
+}

src/lib.rs

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+pub mod meshtastic {
+    include!(concat!(env!("OUT_DIR"), "/meshtastic.rs"));
+}