refactor: split up the utilities file into smaller modules

src/file.c

@@ -291,3 +291,41 @@ void free_file(File* file) {
 
     free(file);
 }
+
+FileInfoBuffer* file_info_buffer_new() {
+    return list_new(sizeof(FileInfo));
+}
+
+int file_info_buffer_push(FileInfoBuffer* buffer, FileInfo info) {
+    return list_push(buffer, &info);
+}
+
+void file_info_buffer_free(List* buffer) {
+    if (buffer) {
+        free(buffer->items);
+        free(buffer);
+    }
+}
+
+int compare_file_info(const void* a, const void* b) {
+    const FileInfo* info1 = (const FileInfo*)a;
+    const FileInfo* info2 = (const FileInfo*)b;
+
+    return strcmp(info1->name, info2->name);
+}
+
+void file_info_buffer_sort(FileInfoBuffer* buffer) {
+    if (!buffer || buffer->len <= 1) {
+        return;
+    }
+
+    qsort(buffer->items, buffer->len, sizeof(FileInfo), compare_file_info);
+}
+
+FileInfo* file_info_buffer_search(FileInfoBuffer* buffer, const char* filename) {
+    if (!buffer || !filename) return NULL;
+
+    FileInfo search_key = {.mode = 0, .name = (char*)filename};
+
+    return (FileInfo*)list_binary_search(buffer, &search_key, compare_file_info);
+}