feat: with rust workspaces

Signed-off-by: kjuulh <contact@kjuulh.io>

crates/cuddle-please-release-strategy/Cargo.toml

@@ -13,11 +13,13 @@ anyhow.workspace = true
 tracing.workspace = true
 serde.workspace = true
 semver.workspace = true
+cargo_metadata = "0.17.0"
 
 [dev-dependencies]
 tracing-test = { workspace = true, features = ["no-env-filter"] }
 pretty_assertions.workspace = true
 tempdir.workspace = true
+serde_json.workspace = true
 
 [features]
 rust-workspace = []
@@ -27,5 +29,6 @@ json-edit = []
 yaml-edit = []
 
 default = [
-  "json-edit"
+  "json-edit",
+  "rust-workspace"
 ]

crates/cuddle-please-release-strategy/src/lib.rs

@@ -1,6 +1,11 @@
 #[cfg(feature = "json-edit")]
 mod json_edit;
+#[cfg(feature = "rust-workspace")]
+mod rust_workspace;
 mod strategy;
 
 #[cfg(feature = "json-edit")]
 pub use json_edit::JsonEditOptions;
+
+#[cfg(feature = "rust-workspace")]
+pub use rust_workspace::RustWorkspaceOptions;

crates/cuddle-please-release-strategy/src/rust_workspace.rs

@@ -0,0 +1,72 @@
+use std::path::{Path, PathBuf};
+
+use anyhow::Context;
+use cargo_metadata::camino::{Utf8Path, Utf8PathBuf};
+use serde::{Deserialize, Serialize};
+
+fn lock_step_default() -> bool {
+    true
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+pub struct RustWorkspaceOptions {
+    #[serde(default = "lock_step_default")]
+    pub lock_step: bool,
+}
+
+impl RustWorkspaceOptions {
+    pub fn execute(&self, path: &Path, next_version: impl AsRef<str>) -> anyhow::Result<()> {
+        let members = self.get_workspace(path)?;
+
+        Ok(())
+    }
+
+    pub fn get_workspace(&self, path: &Path) -> anyhow::Result<Vec<cargo_metadata::Package>> {
+        let entries = std::fs::read_dir(path)
+            .context(anyhow::anyhow!("could not read dir: {}", path.display()))?
+            .flatten()
+            .filter(|p| p.file_name().to_str().unwrap() == "Cargo.toml")
+            .collect::<Vec<_>>();
+
+        let cargo_manifest_file = match entries.first() {
+            Some(x) => x,
+            None => anyhow::bail!("did not find any Cargo.toml in: {}", path.display()),
+        };
+
+        let mut cmd = cargo_metadata::MetadataCommand::new();
+
+        let manifest = cmd
+            .no_deps()
+            .manifest_path(cargo_manifest_file.path())
+            .exec()
+            .context("could not parse manifest")?;
+
+        let members = manifest.workspace_members.iter().collect::<Vec<_>>();
+        let workspace_members = manifest
+            .packages
+            .into_iter()
+            .filter(|p| members.contains(&&p.id))
+            .map(|mut p| {
+                p.manifest_path = abs_path(&p.manifest_path);
+
+                for dependency in p.dependencies.iter_mut() {
+                    dependency.path = dependency.path.take().map(|path| abs_path(&path))
+                }
+
+                p
+            })
+            .collect::<Vec<_>>();
+
+        Ok(workspace_members)
+    }
+}
+
+fn abs_path(path: &Utf8Path) -> Utf8PathBuf {
+    match path.canonicalize_utf8() {
+        Ok(path) => path,
+        Err(e) => {
+            tracing::debug!("failed to transform manifest_path into abs path: {}", path);
+            path.to_path_buf()
+        }
+    }
+}

crates/cuddle-please-release-strategy/tests/rust_workspace_test.rs

@@ -0,0 +1,60 @@
+use cargo_metadata::{
+    camino::{Utf8Path, Utf8PathBuf},
+    Package,
+};
+use cuddle_please_release_strategy::RustWorkspaceOptions;
+use serde_json::json;
+use tracing_test::traced_test;
+
+#[test]
+#[traced_test]
+fn test_can_read_manifest() {
+    let temp = tempdir::TempDir::new("test_rust_workspace_can_read_manifest").unwrap();
+    let temp_path = temp.path();
+
+    std::fs::write(
+        temp_path.join("Cargo.toml"),
+        r#"
+[workspace]            
+members = [
+  "nested"
+]
+
+[workspace.dependencies]
+nested = { path = "nested" }
+        "#,
+    )
+    .unwrap();
+
+    std::fs::create_dir_all(temp_path.join("nested")).unwrap();
+    std::fs::write(
+        temp_path.join("nested").join("Cargo.toml"),
+        r#"
+[package]
+name = "nested"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+nested.workspace = true
+        "#,
+    )
+    .unwrap();
+    std::fs::create_dir_all(temp_path.join("nested").join("src")).unwrap();
+    std::fs::write(
+        temp_path.join("nested").join("src").join("lib.rs"),
+        r#"
+#[test]
+test () {}
+"#,
+    )
+    .unwrap();
+
+    let options = RustWorkspaceOptions { lock_step: true };
+
+    let members = options.get_workspace(temp_path).unwrap();
+
+    assert!(!members.is_empty());
+    let first = members.first().unwrap();
+    pretty_assertions::assert_eq!("nested", &first.name);
+}