Add support for -h and --verbose

cpp/build-packages.cpp

@@ -57,12 +57,16 @@ static const std::string REAL_LINTIAN_DIR = BASE_OUTPUT_DIR + "/lintian";
 static std::string urgency_level_override = "low";
 static int worker_count = 5;
 
+// Global verbosity flag
+static bool verbose = false;
+
 static std::ofstream log_file_stream;
 
+// Logging functions
 static void log_all(const std::string &msg, bool is_error=false) {
     if (is_error) {
         std::cerr << msg;
-    } else {
+    } else if (verbose) {
         std::cout << msg;
     }
     if (log_file_stream.is_open()) {
@@ -83,6 +87,18 @@ static void log_error(const std::string &msg) {
     log_all("[ERROR] " + msg + "\n", true);
 }
 
+static void print_help(const std::string &prog_name) {
+    std::cout << "Usage: " << prog_name << " [OPTIONS] <config_path>\n"
+              << "Options:\n"
+              << "  --skip-dput           Skip uploading changes with dput.\n"
+              << "  --skip-cleanup        Skip cleaning up the output directory after execution.\n"
+              << "  --urgency-level=LEVEL Set the urgency level (default: low).\n"
+              << "  --workers=N           Set the number of worker threads (default: 5).\n"
+              << "  --verbose, -v         Enable verbose logging.\n"
+              << "  --help, -h            Display this help message.\n";
+}
+
+// Adjusted run_command_silent_on_success with conditional logging
 static void run_command_silent_on_success(const std::vector<std::string> &cmd, const std::optional<fs::path> &cwd = std::nullopt) {
     log_info("Running command: " + std::accumulate(cmd.begin(), cmd.end(), std::string(),
         [](const std::string &a, const std::string &b) -> std::string { return a + (a.empty() ? "" : " ") + b; }));
@@ -314,6 +330,27 @@ static std::vector<std::string> get_exclusions(const fs::path &packaging) {
 }
 
 int main(int argc, char** argv) {
+    // Parse command-line arguments
+    std::string prog_name = fs::path(argv[0]).filename().string();
+    for(int i=1; i<argc; i++) {
+        std::string arg=argv[i];
+        if(arg == "--help" || arg == "-h") {
+            print_help(prog_name);
+            return 0;
+        }
+        if(arg == "--verbose" || arg == "-v") {
+            verbose = true;
+            // Remove the verbose flag from argc and argv for further processing
+            // Shift the arguments left
+            for(int j=i; j<argc-1; j++) {
+                argv[j] = argv[j+1];
+            }
+            argc--;
+            i--;
+            continue;
+        }
+    }
+
     log_info("Script started.");
     fs::create_directories(LOG_DIR);
     log_info("Ensured log directory exists: " + LOG_DIR);
@@ -367,6 +404,7 @@ int main(int argc, char** argv) {
 
     if(config_path.empty()) {
         log_error("No config file specified.");
+        print_help(prog_name);
         return 1;
     }