second stable

1 files changed, 39 insertions, 0 deletions

diff --git a/src/properties.rs b/src/properties.rs
new file mode 100644
index 0000000..de391cc
--- /dev/null
+++ b/src/properties.rs
@@ -0,0 +1,39 @@
+use std::collections::HashMap;
+use std::path::Path;
+
+/// Parse a Java .properties file into key-value pairs.
+pub fn read_properties(path: &Path) -> HashMap<String, String> {
+    let mut map = HashMap::new();
+    let Ok(contents) = std::fs::read_to_string(path) else {
+        return map;
+    };
+    for line in contents.lines() {
+        let line = line.trim();
+        if line.is_empty() || line.starts_with('#') || line.starts_with('!') {
+            continue;
+        }
+        if let Some((key, value)) = line.split_once('=') {
+            map.insert(key.trim().to_string(), value.trim().to_string());
+        } else if let Some((key, value)) = line.split_once(':') {
+            map.insert(key.trim().to_string(), value.trim().to_string());
+        }
+    }
+    map
+}
+
+/// Read the level-seed from an instance's server.properties.
+/// Returns None if the file doesn't exist or the seed is empty.
+pub fn read_instance_seed(server_dir: &Path, instance_name: &str) -> Option<String> {
+    let props_path = server_dir
+        .join("instances")
+        .join(instance_name)
+        .join("data")
+        .join("server.properties");
+    let props = read_properties(&props_path);
+    let seed = props.get("level-seed")?;
+    if seed.is_empty() {
+        None
+    } else {
+        Some(seed.clone())
+    }
+}