Merge pull request #103 from kfsone/optional-v

Allow user to limit version argument to --version
p-ranav · Jun 5, 2021 · 64dd67c · 64dd67c
2 parents 1344889 + 38b1b81
commit 64dd67c
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diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -1,12 +1,17 @@
 cmake_minimum_required(VERSION 3.8)
 project(argparse VERSION 1.0.0 LANGUAGES CXX)
 option(ARGPARSE_BUILD_TESTS OFF)
+option(ARGPARSE_LONG_VERSION_ARG_ONLY OFF)
 
 include(GNUInstallDirs)
 
 add_library(argparse INTERFACE)
 add_library(argparse::argparse ALIAS argparse)
 
+if (ARGPARSE_LONG_VERSION_ARG_ONLY)
+	target_compile_definitions(argparse INTERFACE ARGPARSE_LONG_VERSION_ARG_ONLY=true)
+endif ()
+
 target_compile_features(argparse INTERFACE cxx_std_17)
 target_include_directories(argparse INTERFACE
   $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>

diff --git a/include/argparse/argparse.hpp b/include/argparse/argparse.hpp
@@ -815,7 +815,11 @@ class ArgumentParser {
                           std::string aVersion = "1.0")
       : mProgramName(std::move(aProgramName)), mVersion(std::move(aVersion)) {
     add_argument("-h", "--help").help("shows help message and exits").nargs(0);
+#ifndef ARGPARSE_LONG_VERSION_ARG_ONLY
     add_argument("-v", "--version")
+#else
+	add_argument("--version")
+#endif
         .help("prints version information and exits")
         .nargs(0);
   }