Implemented rev-parse -is-bare-repository (#63)

Author: JohanMabille

CMakeLists.txt

@@ -64,6 +64,8 @@ set(GIT2CPP_SRC
     ${GIT2CPP_SOURCE_DIR}/subcommand/remote_subcommand.hpp
     ${GIT2CPP_SOURCE_DIR}/subcommand/reset_subcommand.cpp
     ${GIT2CPP_SOURCE_DIR}/subcommand/reset_subcommand.hpp
+    ${GIT2CPP_SOURCE_DIR}/subcommand/revparse_subcommand.cpp
+    ${GIT2CPP_SOURCE_DIR}/subcommand/revparse_subcommand.hpp
     ${GIT2CPP_SOURCE_DIR}/subcommand/status_subcommand.cpp
     ${GIT2CPP_SOURCE_DIR}/subcommand/status_subcommand.hpp
     ${GIT2CPP_SOURCE_DIR}/utils/ansi_code.cpp

src/main.cpp

@@ -18,6 +18,7 @@
 #include "subcommand/remote_subcommand.hpp"
 #include "subcommand/reset_subcommand.hpp"
 #include "subcommand/status_subcommand.hpp"
+#include "subcommand/revparse_subcommand.hpp"
 
 int main(int argc, char** argv)
 {
@@ -44,6 +45,7 @@ int main(int argc, char** argv)
         merge_subcommand merge(lg2_obj, app);
         push_subcommand push(lg2_obj, app);
         remote_subcommand remote(lg2_obj, app);
+        revparse_subcommand rev(lg2_obj, app);
 
         app.require_subcommand(/* min */ 0, /* max */ 1);
 

src/subcommand/revparse_subcommand.cpp

@@ -0,0 +1,28 @@
+#include "revparse_subcommand.hpp"
+#include "../wrapper/repository_wrapper.hpp"
+#include <ios>
+#include <stdexcept>
+
+revparse_subcommand::revparse_subcommand(const libgit2_object&, CLI::App& app)
+{
+    auto* sub = app.add_subcommand("rev-parse", "Pick out and message parameters");
+
+    sub->add_flag("--is-bare-repository", m_is_bare_repository_flag);
+
+    sub->callback([this]() { this->run(); });
+}
+
+void revparse_subcommand::run()
+{
+    auto directory = get_current_git_path();
+    auto repo = repository_wrapper::open(directory);
+
+    if (m_is_bare_repository_flag)
+    {
+        std::cout << std::boolalpha << repo.is_bare() << std::endl;
+    }
+    else
+    {
+        std::cout << "revparse only supports --is-bare-repository for now" << std::endl;
+    }
+}

src/subcommand/revparse_subcommand.hpp

@@ -0,0 +1,18 @@
+#pragma once
+
+#include <CLI/CLI.hpp>
+
+#include "../utils/common.hpp"
+
+class revparse_subcommand
+{
+public:
+
+    explicit revparse_subcommand(const libgit2_object&, CLI::App& app);
+    void run();
+
+private:
+
+    bool m_is_bare_repository_flag = false;
+};
+

src/wrapper/repository_wrapper.cpp

@@ -46,6 +46,11 @@ void repository_wrapper::state_cleanup()
     throw_if_error(git_repository_state_cleanup(*this));
 }
 
+bool repository_wrapper::is_bare() const
+{
+    return git_repository_is_bare(*this);
+}
+
 // References
 
 reference_wrapper repository_wrapper::head() const

src/wrapper/repository_wrapper.hpp

@@ -33,6 +33,8 @@ class repository_wrapper : public wrapper_base<git_repository>
     git_repository_state_t state() const;
     void state_cleanup();
 
+    bool is_bare() const;
+
     // References
     reference_wrapper head() const;
     reference_wrapper find_reference(std::string_view ref_name) const;

test/test_revparse.py

@@ -0,0 +1,16 @@
+import subprocess
+
+import pytest
+
+def test_revparse(git2cpp_path, tmp_path, run_in_tmp_path):
+    # tmp_path exists and is empty.
+    assert list(tmp_path.iterdir()) == []
+
+    cmd = [git2cpp_path, 'init', '--bare']
+    p = subprocess.run(cmd, cwd = tmp_path)
+
+    cmd2 = [git2cpp_path, 'rev-parse', '--is-bare-repository']
+    p2 = subprocess.run(cmd2, capture_output=True, text=True, cwd = tmp_path)
+
+    assert p2.returncode == 0
+    assert p2.stdout == 'true\n'