vector sizes

streaming wip

src/utils/directed_graph.rs

@@ -42,8 +42,8 @@ where
     // Detect and return cycles in the graph
     pub fn find_cycles(&self) -> Vec<Vec<K>> {
         let mut visited = HashSet::new();
-        let mut recursion_stack = Vec::new();
-        let mut cycles = Vec::new();
+        let mut recursion_stack = Vec::with_capacity(128);
+        let mut cycles = Vec::with_capacity(128);
 
         for node in self.adjacencies.keys() {
             if !visited.contains(node) {

src/utils/download.rs

@@ -142,7 +142,7 @@ const ACTIONS: [(XtreamCluster, &str, &str); 3] = [
     (XtreamCluster::Series, "get_series_categories", "get_series")];
 
 pub async fn get_xtream_playlist(input: &ConfigInput, working_dir: &str) -> (Vec<PlaylistGroup>, Vec<M3uFilterError>) {
-    let mut playlist_groups: Vec<PlaylistGroup> = Vec::new();
+    let mut playlist_groups: Vec<PlaylistGroup> = Vec::with_capacity(128);
     let username = input.username.as_ref().map_or("", |v| v);
     let password = input.password.as_ref().map_or("", |v| v);
     let base_url = format!("{}/player_api.php?username={}&password={}", input.url, username, password);

src/utils/json_utils.rs

@@ -64,7 +64,7 @@ pub fn json_iter_array<T: DeserializeOwned, R: Read>(
 }
 
 pub fn json_filter_file(file_path: &Path, filter: &HashMap<&str, &str>) -> Vec<serde_json::Value> {
-    let mut filtered: Vec<serde_json::Value> = Vec::new();
+    let mut filtered: Vec<serde_json::Value> = Vec::with_capacity(1024);
     if !file_path.exists() {
         return filtered; // Return early if the file does not exist
     }

src/utils/multi_file_reader.rs

@@ -9,7 +9,7 @@ pub struct MultiFileReader {
 
 impl MultiFileReader {
     pub fn new(paths: &Vec<PathBuf>) -> io::Result<Self> {
-        let mut files = Vec::new();
+        let mut files = Vec::with_capacity(paths.len());
         for path in paths {
             match File::open(path) {
                 Ok(file) => { files.push(file); }