Initial commit

src/config.rs

@@ -0,0 +1,40 @@
+use serde::{Deserialize, Serialize};
+
+use super::repo::Repo;
+
+#[derive(Debug, Serialize, Deserialize)]
+#[serde(deny_unknown_fields)]
+pub struct Config {
+    pub trees: Vec<Tree>,
+}
+
+#[derive(Debug, Serialize, Deserialize)]
+#[serde(deny_unknown_fields)]
+pub struct Tree {
+    pub root: Option<String>,
+    pub repos: Option<Vec<Repo>>,
+}
+
+pub fn read_config(path: &str) -> Result<Config, String> {
+    let content = match std::fs::read_to_string(&path) {
+        Ok(s) => s,
+        Err(e) => {
+            return Err(format!(
+                "Error reading configuration file \"{}\": {}",
+                path, e
+            ))
+        }
+    };
+
+    let config: Config = match toml::from_str(&content) {
+        Ok(c) => c,
+        Err(e) => {
+            return Err(format!(
+                "Error parsing configuration file \"{}\": {}",
+                path, e
+            ))
+        }
+    };
+
+    Ok(config)
+}