Refactor logging

log.cpp

@@ -7,7 +7,7 @@
 
 std::string log_entries;
 
-void log(std::string entry, time_t time) {
+std::string format_log(std::string entry, time_t time) {
     size_t newline_pos;
     char time_as_str[128] = {0};
 
@@ -16,15 +16,25 @@ void log(std::string entry, time_t time) {
         entry.replace(newline_pos, 1, 1, ' ');
     }
 
+    return std::string(1, '[') + time_as_str + "] " + std::move(entry);
+}
+
+std::string format_log(std::string entry) {
+    return format_log(std::move(entry), time(nullptr));
+}
+
+void log_raw(std::string line) {
+    printf("%s\n", line.c_str());
     if (!log_entries.empty()) {
         log_entries += '\n';
     }
-    log_entries += '[';
-    log_entries += time_as_str;
-    log_entries += "] ";
-    log_entries += std::move(entry);
+    log_entries += std::move(line);
+}
+
+void log(std::string entry, time_t time) {
+    log_raw(format_log(std::move(entry), time));
 }
 
 void log(std::string entry) {
-    log(std::move(entry), time(nullptr));
+    log_raw(format_log(std::move(entry)));
 }

log.h

@@ -6,5 +6,8 @@
 
 extern std::string log_entries;
 
+std::string format_log(std::string entry, time_t time);
+std::string format_log(std::string entry);
+void log_raw(std::string line);
 void log(std::string entry, time_t time);
 void log(std::string entry);