simplewallet: add (out of sync) or (no daemon) markers in the prompt

Should help people who don't realize why they haven't seen their
monero yet.

contrib/epee/include/console_handler.h

@@ -293,13 +293,13 @@ namespace epee
     }
 
     template<class t_server, class chain_handler>
-    bool run(t_server* psrv, chain_handler ch_handler, const std::string& prompt = "#", const std::string& usage = "")
+    bool run(t_server* psrv, chain_handler ch_handler, std::function<std::string(void)> prompt, const std::string& usage = "")
     {
       return run(prompt, usage, [&](const std::string& cmd) { return ch_handler(psrv, cmd); }, [&] { psrv->send_stop_signal(); });
     }
 
     template<class chain_handler>
-    bool run(chain_handler ch_handler, const std::string& prompt = "#", const std::string& usage = "", std::function<void(void)> exit_handler = NULL)
+    bool run(chain_handler ch_handler, std::function<std::string(void)> prompt, const std::string& usage = "", std::function<void(void)> exit_handler = NULL)
     {
       return run(prompt, usage, [&](const std::string& cmd) { return ch_handler(cmd); }, exit_handler);
     }
@@ -312,18 +312,19 @@ namespace epee
 
     void print_prompt()
     {
-      if (!m_prompt.empty())
+      std::string prompt = m_prompt();
+      if (!prompt.empty())
       {
 #ifdef HAVE_READLINE
-        std::string color_prompt = "\001\033[1;33m\002" + m_prompt;
-        if (' ' != m_prompt.back())
+        std::string color_prompt = "\001\033[1;33m\002" + prompt;
+        if (' ' != prompt.back())
           color_prompt += " ";
         color_prompt += "\001\033[0m\002";
         m_stdin_reader.get_readline_buffer().set_prompt(color_prompt);
 #else
         epee::set_console_color(epee::console_color_yellow, true);
-        std::cout << m_prompt;
-        if (' ' != m_prompt.back())
+        std::cout << prompt;
+        if (' ' != prompt.back())
           std::cout << ' ';
         epee::reset_console_color();
         std::cout.flush();
@@ -333,7 +334,7 @@ namespace epee
 
   private:
     template<typename t_cmd_handler>
-    bool run(const std::string& prompt, const std::string& usage, const t_cmd_handler& cmd_handler, std::function<void(void)> exit_handler)
+    bool run(std::function<std::string(void)> prompt, const std::string& usage, const t_cmd_handler& cmd_handler, std::function<void(void)> exit_handler)
     {
       bool continue_handle = true;
       m_prompt = prompt;
@@ -394,7 +395,7 @@ namespace epee
   private:
     async_stdin_reader m_stdin_reader;
     std::atomic<bool> m_running = {true};
-    std::string m_prompt;
+    std::function<std::string(void)> m_prompt;
   };
 
 
@@ -516,19 +517,23 @@ namespace epee
     std::unique_ptr<boost::thread> m_console_thread;
     async_console_handler m_console_handler;
   public:
-    bool start_handling(const std::string& prompt, const std::string& usage_string = "", std::function<void(void)> exit_handler = NULL)
+    bool start_handling(std::function<std::string(void)> prompt, const std::string& usage_string = "", std::function<void(void)> exit_handler = NULL)
     {
       m_console_thread.reset(new boost::thread(boost::bind(&console_handlers_binder::run_handling, this, prompt, usage_string, exit_handler)));
       m_console_thread->detach();
       return true;
     }
+    bool start_handling(const std::string &prompt, const std::string& usage_string = "", std::function<void(void)> exit_handler = NULL)
+    {
+      return start_handling([prompt](){ return prompt; }, usage_string, exit_handler);
+    }
 
     void stop_handling()
     {
       m_console_handler.stop();
     }
 
-    bool run_handling(const std::string& prompt, const std::string& usage_string, std::function<void(void)> exit_handler = NULL)
+    bool run_handling(std::function<std::string(void)> prompt, const std::string& usage_string, std::function<void(void)> exit_handler = NULL)
     {
       return m_console_handler.run(boost::bind(&console_handlers_binder::process_command_str, this, _1), prompt, usage_string, exit_handler);
     }

src/simplewallet/simplewallet.cpp

@@ -3956,6 +3956,19 @@ void simple_wallet::wallet_idle_thread()
   }
 }
 //----------------------------------------------------------------------------------------------------
+std::string simple_wallet::get_prompt() const
+{
+  std::string addr_start = m_wallet->get_account().get_public_address_str(m_wallet->testnet()).substr(0, 6);
+  std::string prompt = std::string("[") + tr("wallet") + " " + addr_start;
+  uint32_t version;
+  if (!m_wallet->check_connection(&version))
+    prompt += tr(" (no daemon)");
+  else if (!m_wallet->is_synced())
+    prompt += tr(" (out of sync)");
+  prompt += "]: ";
+  return prompt;
+}
+//----------------------------------------------------------------------------------------------------
 bool simple_wallet::run()
 {
   // check and display warning, but go on anyway
@@ -3966,9 +3979,8 @@ bool simple_wallet::run()
   m_auto_refresh_enabled = m_wallet->auto_refresh();
   m_idle_thread = boost::thread([&]{wallet_idle_thread();});
 
-  std::string addr_start = m_wallet->get_account().get_public_address_str(m_wallet->testnet()).substr(0, 6);
   message_writer(console_color_green, false) << "Background refresh thread started";
-  return m_cmd_binder.run_handling(std::string("[") + tr("wallet") + " " + addr_start + "]: ", "");
+  return m_cmd_binder.run_handling([this](){return get_prompt();}, "");
 }
 //----------------------------------------------------------------------------------------------------
 void simple_wallet::stop()

src/simplewallet/simplewallet.h

@@ -182,6 +182,7 @@ namespace cryptonote
     bool accept_loaded_tx(const tools::wallet2::unsigned_tx_set &txs);
     bool accept_loaded_tx(const tools::wallet2::signed_tx_set &txs);
     bool print_ring_members(const std::vector<tools::wallet2::pending_tx>& ptx_vector, std::ostream& ostr);
+    std::string get_prompt() const;
 
     /*!
      * \brief Prints the seed with a nice message