logger: Add default logging level 'notice'

Between info and warning. Should be for things the user should be aware
of but not imply anything has to be done about it.

contrib/bash/polybar

@@ -42,6 +42,7 @@ _polybar() {
 
   local log_levels='error
                     warning
+                    notice
                     info
                     trace'
 

contrib/zsh/_polybar

@@ -17,7 +17,7 @@ _polybar() {
   _arguments -n : \
     '(-)'{-h,--help}'[Display help text and exit]' \
     '(-)'{-v,--version}'[Display build details and exit]' \
-    "($L $Q)"{-l,--log=}'[Set the logging verbosity (default: warning)]:verbosity level:(error warning info trace)' \
+    "($L $Q)"{-l,--log=}'[Set the logging verbosity (default: notice)]:verbosity level:(error warning notice info trace)' \
     "($L $Q)"{-q,--quiet}'[Be quiet (will override -l)]' \
     "($C)"{-c,--config=}'[Path to the configuration file]:configuration file:_files' \
     "($R)"{-r,--reload}'[Reload when the configuration has been modified]' \

doc/man/polybar.1.rst

@@ -23,8 +23,8 @@ OPTIONS
    Display build details and exit
 .. option:: -l, --log=LEVEL
 
-   | Set the logging verbosity (default: **WARNING**)
+   | Set the logging verbosity (default: **notice**)
-   | *LEVEL* is one of: error, warning, info, trace
+   | *LEVEL* is one of: error, warning, notice, info, trace
 .. option:: -q, --quiet
 
    Be quiet (will override -l)

include/components/logger.hpp

@@ -22,6 +22,7 @@ enum class loglevel {
   NONE = 0,
   ERROR,
   WARNING,
+  NOTICE,
   INFO,
   TRACE,
 };
@@ -66,6 +67,14 @@ class logger {
     output(loglevel::INFO, message, std::forward<Args>(args)...);
   }
 
+  /**
+   * Output a notice
+   */
+  template <typename... Args>
+  void notice(const string& message, Args&&... args) const {
+    output(loglevel::NOTICE, message, std::forward<Args>(args)...);
+  }
+
   /**
    * Output a warning message
    */

src/components/logger.cpp

@@ -38,19 +38,23 @@ logger::logger(loglevel level) : m_level(level) {
   if (isatty(m_fd)) {
     m_prefixes[loglevel::TRACE]   = "\r\033[0;32m- \033[0m";
     m_prefixes[loglevel::INFO]    = "\r\033[1;32m* \033[0m";
+    m_prefixes[loglevel::NOTICE]  = "\r\033[1;34mnotice: \033[0m";
     m_prefixes[loglevel::WARNING] = "\r\033[1;33mwarn: \033[0m";
     m_prefixes[loglevel::ERROR]   = "\r\033[1;31merror: \033[0m";
     m_suffixes[loglevel::TRACE]   = "\033[0m";
     m_suffixes[loglevel::INFO]    = "\033[0m";
+    m_suffixes[loglevel::NOTICE]  = "\033[0m";
     m_suffixes[loglevel::WARNING] = "\033[0m";
     m_suffixes[loglevel::ERROR]   = "\033[0m";
   } else {
     m_prefixes.emplace(make_pair(loglevel::TRACE,   "polybar|trace: "));
     m_prefixes.emplace(make_pair(loglevel::INFO,    "polybar|info:  "));
+    m_prefixes.emplace(make_pair(loglevel::NOTICE,  "polybar|notice:  "));
     m_prefixes.emplace(make_pair(loglevel::WARNING, "polybar|warn:  "));
     m_prefixes.emplace(make_pair(loglevel::ERROR,   "polybar|error: "));
     m_suffixes.emplace(make_pair(loglevel::TRACE,   ""));
     m_suffixes.emplace(make_pair(loglevel::INFO,    ""));
+    m_suffixes.emplace(make_pair(loglevel::NOTICE,  ""));
     m_suffixes.emplace(make_pair(loglevel::WARNING, ""));
     m_suffixes.emplace(make_pair(loglevel::ERROR,   ""));
   }
@@ -77,6 +81,8 @@ loglevel logger::parse_verbosity(const string& name, loglevel fallback) {
     return loglevel::ERROR;
   } else if (string_util::compare(name, "warning")) {
     return loglevel::WARNING;
+  } else if (string_util::compare(name, "notice")) {
+    return loglevel::NOTICE;
   } else if (string_util::compare(name, "info")) {
     return loglevel::INFO;
   } else if (string_util::compare(name, "trace")) {

src/main.cpp

@@ -16,7 +16,7 @@ int main(int argc, char** argv) {
   const command_line::options opts{
       command_line::option{"-h", "--help", "Display this help and exit"},
       command_line::option{"-v", "--version", "Display build details and exit"},
-      command_line::option{"-l", "--log", "Set the logging verbosity (default: WARNING)", "LEVEL", {"error", "warning", "info", "trace"}},
+      command_line::option{"-l", "--log", "Set the logging verbosity (default: notice)", "LEVEL", {"error", "warning", "notice", "info", "trace"}},
       command_line::option{"-q", "--quiet", "Be quiet (will override -l)"},
       command_line::option{"-c", "--config", "Path to the configuration file", "FILE"},
       command_line::option{"-r", "--reload", "Reload when the configuration has been modified"},
@@ -32,7 +32,7 @@ int main(int argc, char** argv) {
   unsigned char exit_code{EXIT_SUCCESS};
   bool reload{false};
 
-  logger& logger{const_cast<decltype(logger)>(logger::make(loglevel::WARNING))};
+  logger& logger{const_cast<decltype(logger)>(logger::make(loglevel::NOTICE))};
 
   try {
     //==================================================