meow meow

src/nix_path.rs

@@ -0,0 +1,38 @@
+const NIX_STORE_PREFIX: &str = "/nix/store/";
+const NIX_HASH_LENGTH: usize = 32;
+pub fn extract_package_name(path: &str) -> Option<String> {
+    let without_prefix = path.strip_prefix(NIX_STORE_PREFIX)?;
+
+    if without_prefix.len() <= NIX_HASH_LENGTH + 1 {
+        return None;
+    }
+
+    let after_hash = &without_prefix[NIX_HASH_LENGTH + 1..];
+    let parts: Vec<&str> = after_hash.split('-').collect();
+
+    if parts.is_empty() {
+        return None;
+    }
+
+    let name_parts: Vec<&str> = parts
+        .iter()
+        .take_while(|part| !part.chars().next().map_or(false, |c| c.is_ascii_digit()))
+        .copied()
+        .collect();
+
+    if name_parts.is_empty() {
+        return None;
+    }
+
+    Some(name_parts.join("-"))
+}
+
+pub fn extract_full_name(path: &str) -> Option<&str> {
+    let without_prefix = path.strip_prefix(NIX_STORE_PREFIX)?;
+
+    if without_prefix.len() <= NIX_HASH_LENGTH + 1 {
+        return None;
+    }
+
+    Some(&without_prefix[NIX_HASH_LENGTH + 1..])
+}