From cc71df8100b33904d2c12a92fef237bebacbe1cd Mon Sep 17 00:00:00 2001
From: Szczepan Zalega <szczepan@nitrokey.com>
Date: Fri, 12 May 2017 20:44:42 +0200
Subject: Refactor log code

Inverse log levels order.
Allow to change logging level with int.

Signed-off-by: Szczepan Zalega <szczepan@nitrokey.com>
---
 NitrokeyManager.cc        |  6 ++++++
 include/NitrokeyManager.h |  2 ++
 include/log.h             | 13 ++++++++++---
 log.cc                    | 31 ++++++++++++++++---------------
 4 files changed, 34 insertions(+), 18 deletions(-)

diff --git a/NitrokeyManager.cc b/NitrokeyManager.cc
index 9fbd303..096a8c4 100644
--- a/NitrokeyManager.cc
+++ b/NitrokeyManager.cc
@@ -187,6 +187,12 @@ char * strndup(const char* str, size_t maxlen){
     return false;
   }
 
+    void NitrokeyManager::set_loglevel(int loglevel) {
+      loglevel = max(loglevel, static_cast<int>(Loglevel::ERROR));
+      loglevel = min(loglevel, static_cast<int>(Loglevel::DEBUG_L2));
+      Log::instance().set_loglevel(static_cast<Loglevel>(loglevel));
+    }
+
     void NitrokeyManager::set_loglevel(Loglevel loglevel) {
       Log::instance().set_loglevel(loglevel);
     }
diff --git a/include/NitrokeyManager.h b/include/NitrokeyManager.h
index e3dcc45..de14fbc 100644
--- a/include/NitrokeyManager.h
+++ b/include/NitrokeyManager.h
@@ -179,6 +179,8 @@ char * strndup(const char* str, size_t maxlen);
     public:
       bool set_current_device_speed(int retry_delay, int send_receive_delay);
       void set_loglevel(Loglevel loglevel);
+
+      void set_loglevel(int loglevel);
     };
 }
 
diff --git a/include/log.h b/include/log.h
index e7c790a..e559845 100644
--- a/include/log.h
+++ b/include/log.h
@@ -16,7 +16,11 @@ namespace nitrokey {
 
 
     enum class Loglevel : int {
-      DEBUG_L2, DEBUG, INFO, WARNING, ERROR
+      ERROR,
+      WARNING,
+      INFO,
+      DEBUG,
+      DEBUG_L2
     };
 
     class LogHandler {
@@ -24,6 +28,8 @@ namespace nitrokey {
       virtual void print(const std::string &, Loglevel lvl) = 0;
     protected:
       std::string loglevel_to_str(Loglevel);
+      std::string format_message_to_string(const std::string &str, const Loglevel &lvl);
+
     };
 
     class StdlogHandler : public LogHandler {
@@ -32,9 +38,10 @@ namespace nitrokey {
     };
 
     class FunctionalLogHandler : public LogHandler {
-      std::function<void(std::string)> log_function;
+      using log_function_type = std::function<void(std::string)>;
+      log_function_type log_function;
     public:
-      FunctionalLogHandler(std::function<void(std::string)> _log_function);
+      FunctionalLogHandler(log_function_type _log_function);
       virtual void print(const std::string &, Loglevel lvl);
 
     };
diff --git a/log.cc b/log.cc
index 84f34d7..7d61a0d 100644
--- a/log.cc
+++ b/log.cc
@@ -30,31 +30,32 @@ namespace nitrokey {
 
     void Log::operator()(const std::string &logstr, Loglevel lvl) {
       if (mp_loghandler != nullptr)
-        if ((int) lvl >= (int) m_loglevel) mp_loghandler->print(logstr, lvl);
+        if ((int) lvl <= (int) m_loglevel) mp_loghandler->print(logstr, lvl);
     }
 
     void StdlogHandler::print(const std::string &str, Loglevel lvl) {
-      std::time_t t = std::time(nullptr);
-      std::tm tm = *std::localtime(&t);
-
-      std::clog << "[" << loglevel_to_str(lvl) << "] ["
-                << std::put_time(&tm, "%c %z")
-                << "]\t" << str << std::endl;
+      std::string s = format_message_to_string(str, lvl);
+      std::clog << s;
     }
 
     void FunctionalLogHandler::print(const std::string &str, Loglevel lvl) {
-      std::time_t t = std::time(nullptr);
-      std::tm tm = *std::localtime(&t);
+      std::string s = format_message_to_string(str, lvl);
+      log_function(s);
+    }
 
-      std::stringstream s;
-      s << "[" << loglevel_to_str(lvl) << "] ["
-                << std::put_time(&tm, "%c %z")
-                << "]\t" << str << std::endl;
+    std::string LogHandler::format_message_to_string(const std::string &str, const Loglevel &lvl) {
+      time_t t = time(nullptr);
+      tm tm = *localtime(&t);
 
-      log_function(s.str());
+      std::stringstream s;
+      s
+          << "[" << std::put_time(&tm, "%c") << "]"
+          << "[" << loglevel_to_str(lvl) << "]\t"
+          << str << std::endl;
+      return s.str();
     }
 
-    FunctionalLogHandler::FunctionalLogHandler(std::function<void(std::string)> _log_function) {
+    FunctionalLogHandler::FunctionalLogHandler(log_function_type _log_function) {
       log_function = _log_function;
     }
   }
-- 
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