[M1] add cargoxx new

src/cli/run.cpp

@@ -0,0 +1,48 @@
+module;
+
+#include <CLI11.hpp>
+
+module cargoxx.cli;
+
+import std;
+import cargoxx.util;
+
+namespace cargoxx::cli {
+
+auto run(int argc, char** argv) -> int {
+    CLI::App app{"cargoxx — a Cargo-style project tool for modern C++"};
+    app.require_subcommand(1);
+
+    auto* new_cmd = app.add_subcommand("new", "Create a new cargoxx project");
+    std::string new_name;
+    bool new_lib = false;
+    new_cmd->add_option("name", new_name, "Project name")->required();
+    new_cmd->add_flag("--lib", new_lib, "Create a library project");
+
+    try {
+        app.parse(argc, argv);
+    } catch (const CLI::ParseError& e) {
+        return app.exit(e);
+    }
+
+    if (*new_cmd) {
+        std::error_code ec;
+        auto cwd = std::filesystem::current_path(ec);
+        if (ec) {
+            std::cerr << std::format("error: cannot determine current working directory: {}\n",
+                                     ec.message());
+            return 1;
+        }
+        auto r = cmd_new(new_name, new_lib, cwd);
+        if (!r) {
+            std::cerr << util::format(r.error());
+            return 1;
+        }
+        std::cout << std::format("    Created `{}` project\n", new_name);
+        return 0;
+    }
+
+    return 0;
+}
+
+} // namespace cargoxx::cli