Allow hash of current directory

src/autocomplete.cpp

@@ -22,6 +22,15 @@ void dropshell::autocomplete(const std::vector<std::string> &args)
 
     // std::cout<<" cmd = ["<<cmd<<"]"<<std::endl;
 
+    if (cmd=="hash")
+    {   // output files and folders in the current directory, one per line.
+        std::filesystem::directory_iterator dir_iter(std::filesystem::current_path());
+        for (const auto& entry : dir_iter) 
+            std::cout << entry.path().filename().string() << std::endl;        
+        return;
+    }
+
+
     std::string noargcmds[] = {"templates","autocomplete_list_servers","autocomplete_list_services","autocomplete_list_commands"};
     if (std::find(std::begin(noargcmds), std::end(noargcmds), cmd) != std::end(noargcmds))
         return;

src/utils/hash.cpp

@@ -92,11 +92,27 @@ uint64_t hash_directory_recursive(const std::string &path) {
     return hash;
 }
 
+uint64_t hash_path(const std::string &path) {
+    if (!std::filesystem::exists(path)) {
+        std::cerr << "Path does not exist: " << path << std::endl;
+        return 0;
+    }
+
+    if (std::filesystem::is_directory(path)) {
+        return hash_directory_recursive(path);
+    } else if (std::filesystem::is_regular_file(path)) {
+        return hash_file(path);
+    } else {
+        std::cerr << "Path is neither a file nor a directory: " << path << std::endl;
+        return 0;
+    }
+}
+
 void hash_demo(const std::string & path)
 {
-    std::cout << "Hashing directory: " << path << std::endl;
+    std::cout << "Hashing path: " << path << std::endl;
     auto start = std::chrono::high_resolution_clock::now();
-    XXH64_hash_t hash = hash_directory_recursive(path);
+    XXH64_hash_t hash = hash_path(path);
     auto end = std::chrono::high_resolution_clock::now();
     auto duration = std::chrono::duration_cast<std::chrono::milliseconds>(end - start);
     std::cout << "Hash: " << hash << " (took " << duration.count() << "ms)" << std::endl;
@@ -107,7 +123,7 @@ int hash_demo_raw(const std::string & path)
     if (!std::filesystem::exists(path)) {
         std::cout << 0 <<std::endl; return 1;
     }
-    XXH64_hash_t hash = hash_directory_recursive(path);
+    XXH64_hash_t hash = hash_path(path);
     std::cout << hash << std::endl;
     return 0;
 }

src/utils/hash.hpp

@@ -10,6 +10,8 @@ namespace dropshell {
 
     uint64_t hash_directory_recursive(const std::string &path);
 
+    uint64_t hash_path(const std::string &path);
+
     void hash_demo(const std::string & path);
 
     int hash_demo_raw(const std::string & path);