Revert removing name argument from print_help function

- The existing method is better because it uses the binary name instead of the project name `Sunshine`.

sunshine/config.cpp

@@ -863,7 +863,7 @@ int parse(int argc, char *argv[]) {
     auto line = argv[x];
 
     if(line == "--help"sv) {
-      print_help();
+      print_help(*argv);
       return 1;
     }
     else if(*line == '-') {
@@ -875,7 +875,7 @@ int parse(int argc, char *argv[]) {
         break;
       }
       if(apply_flags(line + 1)) {
-        print_help();
+        print_help(*argv);
         return -1;
       }
     }
@@ -889,7 +889,7 @@ int parse(int argc, char *argv[]) {
       else {
         TUPLE_EL(var, 1, parse_option(line, line_end));
         if(!var) {
-          print_help();
+          print_help(*argv);
           return -1;
         }
 

sunshine/main.cpp

@@ -61,9 +61,9 @@ BOOST_LOG_ATTRIBUTE_KEYWORD(severity, "Severity", int)
 
     This function prints output to stdout.
 */
-void print_help() {
+void print_help(const char *name) {
   std::cout
-    << "Usage: "sv << PROJECT_NAME << " [options] [/path/to/configuration_file] [--cmd]"sv << std::endl
+    << "Usage: "sv << name << " [options] [/path/to/configuration_file] [--cmd]"sv << std::endl
     << "    Any configurable option can be overwritten with: \"name=value\""sv << std::endl
     << std::endl
     << "    Note: The configuration will be created if it doesn't exist."sv << std::endl
@@ -86,8 +86,8 @@ void print_help() {
     Calls the print_help function and then exits.
 */
 namespace help {
-int entry(int argc, char *argv[]) {
-  print_help();
+int entry(const char *name, int argc, char *argv[]) {
+  print_help(name);
   return 0;
 }
 } // namespace help
@@ -97,7 +97,7 @@ int entry(int argc, char *argv[]) {
     This function prints the version details to stdout and then exits.
 */
 namespace version {
-int entry(int argc, char *argv[]) {
+int entry(const char *name, int argc, char *argv[]) {
   std::cout << PROJECT_NAME << " version: v" << PROJECT_VER << std::endl;
   return 0;
 }
@@ -120,9 +120,9 @@ void on_signal(int sig, FN &&fn) {
 }
 
 namespace gen_creds {
-int entry(int argc, char *argv[]) {
+int entry(const char *name, int argc, char *argv[]) {
   if(argc < 2 || argv[0] == "help"sv || argv[1] == "help"sv) {
-    print_help();
+    print_help(name);
     return 0;
   }
 
@@ -132,7 +132,7 @@ int entry(int argc, char *argv[]) {
 }
 } // namespace gen_creds
 
-std::map<std::string_view, std::function<int(int argc, char **argv)>> cmd_to_func {
+std::map<std::string_view, std::function<int(const char *name, int argc, char **argv)>> cmd_to_func {
   { "creds"sv, gen_creds::entry },
   { "help"sv, help::entry },
   { "version"sv, version::entry }
@@ -229,7 +229,7 @@ int main(int argc, char *argv[]) {
       return 7;
     }
 
-    return fn->second(config::sunshine.cmd.argc, config::sunshine.cmd.argv);
+    return fn->second(argv[0], config::sunshine.cmd.argc, config::sunshine.cmd.argv);
   }
 
   task_pool.start(1);

sunshine/main.h

@@ -24,7 +24,7 @@ extern boost::log::sources::severity_logger<int> fatal;
 
 void log_flush();
 
-void print_help();
+void print_help(const char *name);
 
 std::string read_file(const char *path);
 int write_file(const char *path, const std::string_view &contents);