From bcd0c8eaa56920a951e3710671702a049157b706 Mon Sep 17 00:00:00 2001
From: KnorpelSenf <shtrog@gmail.com>
Date: Mon, 10 May 2021 17:49:50 +0200
Subject: [PATCH] Add --version flag (#132)

---
 telegram-bot-api/telegram-bot-api.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/telegram-bot-api/telegram-bot-api.cpp b/telegram-bot-api/telegram-bot-api.cpp
index 3e1b02b..693dbb4 100644
--- a/telegram-bot-api/telegram-bot-api.cpp
+++ b/telegram-bot-api/telegram-bot-api.cpp
@@ -142,6 +142,7 @@ int main(int argc, char *argv[]) {
 
   td::OptionParser options;
   bool need_print_usage = false;
+  bool need_print_version = false;
   int http_port = 8081;
   int http_stat_port = 0;
   td::string http_ip_address = "0.0.0.0";
@@ -173,6 +174,7 @@ int main(int argc, char *argv[]) {
   options.set_usage(td::Slice(argv[0]), "--api-id=<arg> --api-hash=<arg> [--local] [OPTION]...");
   options.set_description("Telegram Bot API server");
   options.add_option('h', "help", "display this help text and exit", [&] { need_print_usage = true; });
+  options.add_option('\0', "version", "display version number and exit", [&] { need_print_version = true; });
   options.add_option('\0', "local", "allow the Bot API server to serve local requests",
                      [&] { parameters->local_mode_ = true; });
   options.add_checked_option(
@@ -275,6 +277,10 @@ int main(int argc, char *argv[]) {
     LOG(PLAIN) << options;
     return 0;
   }
+  if (need_print_version) {
+    LOG(PLAIN) << "Bot API " << parameters->version_;
+    return 0;
+  }
   if (r_non_options.is_error()) {
     LOG(PLAIN) << argv[0] << ": " << r_non_options.error();
     LOG(PLAIN) << options;