cleanup: my_getopt, get_one_option isn't optional

it turns out that practically every single user of handle_options()
used the get_one_option callback. Simplify the code,
make it mandatory, adjust unit tests.

include/my_getopt.h

@@ -110,7 +110,8 @@ extern my_error_reporter my_getopt_error_reporter;
 extern my_getopt_value my_getopt_get_addr;
 
 extern int handle_options (int *argc, char ***argv, 
-			   const struct my_option *longopts, my_get_one_option);
+			   const struct my_option *longopts, my_get_one_option)
+  __attribute__((nonnull));
 extern void my_cleanup_options(const struct my_option *options);
 extern void my_print_help(const struct my_option *options);
 extern void my_print_variables(const struct my_option *options);

mysys/my_getopt.c

@@ -134,7 +134,7 @@ double getopt_ulonglong2double(ulonglong v)
   or until the end of argv. Parse options, check that the given option
   matches with one of the options in struct 'my_option'.
   Check that option was given an argument if it requires one
-  Call the optional 'get_one_option()' function once for each option.
+  Call the 'get_one_option()' function once for each option.
 
   Note that handle_options() can be invoked multiple times to
   parse a command line in several steps.
@@ -181,13 +181,11 @@ double getopt_ulonglong2double(ulonglong v)
   @param [in, out] argc      command line options (count)
   @param [in, out] argv      command line options (values)
   @param [in] longopts       descriptor of all valid options
-  @param [in] get_one_option optional callback function to process each option,
-                            can be NULL.
+  @param [in] get_one_option callback function to process each option
   @return error in case of ambiguous or unknown options,
           0 on success.
 */
-int handle_options(int *argc, char ***argv, 
-		   const struct my_option *longopts,
+int handle_options(int *argc, char ***argv, const struct my_option *longopts,
                    my_get_one_option get_one_option)
 {
   uint UNINIT_VAR(opt_found), argvpos= 0, length;
@@ -447,8 +445,7 @@ int handle_options(int *argc, char ***argv,
 				       my_progname, optp->name, optend);
 	      continue;
 	    }
-            if (get_one_option && get_one_option(optp->id, optp,
-                               *((my_bool*) value) ?
+            if (get_one_option(optp->id, optp, *((my_bool*) value) ?
                                enabled_my_option : disabled_my_option))
               DBUG_RETURN(EXIT_ARGUMENT_INVALID);
 	    continue;
@@ -466,12 +463,7 @@ int handle_options(int *argc, char ***argv,
 
 	    DBUG_RETURN(EXIT_NO_ARGUMENT_ALLOWED);
 	  }
-	  /*
-	    We support automatic setup only via get_one_option and only for
-	    marked options.
-	  */
-	  if (!get_one_option ||
-	      !(optp->var_type & GET_AUTO))
+	  if (!(optp->var_type & GET_AUTO))
 	  {
 	    my_getopt_error_reporter(option_is_loose ?
 				     WARNING_LEVEL : ERROR_LEVEL,
@@ -487,7 +479,8 @@ int handle_options(int *argc, char ***argv,
 	}
 	else if (optp->arg_type == REQUIRED_ARG && !optend)
 	{
-	  /* Check if there are more arguments after this one,
+          /*
+            Check if there are more arguments after this one,
             Note: options loaded from config file that requires value
             should always be in the form '--option=value'.
           */
@@ -528,7 +521,7 @@ int handle_options(int *argc, char ***argv,
 		  optp->arg_type == NO_ARG)
 	      {
 		*((my_bool*) optp->value)= (my_bool) 1;
-                if (get_one_option && get_one_option(optp->id, optp, argument))
+                if (get_one_option(optp->id, optp, argument))
                   DBUG_RETURN(EXIT_UNSPECIFIED_ERROR);
 		continue;
 	      }
@@ -548,7 +541,7 @@ int handle_options(int *argc, char ***argv,
                   {
                     if (optp->var_type == GET_BOOL)
                       *((my_bool*) optp->value)= (my_bool) 1;
-                    if (get_one_option && get_one_option(optp->id, optp, argument))
+                    if (get_one_option(optp->id, optp, argument))
                       DBUG_RETURN(EXIT_UNSPECIFIED_ERROR);
                     continue;
                   }
@@ -569,7 +562,7 @@ int handle_options(int *argc, char ***argv,
 	      if ((error= setval(optp, optp->value, argument,
 				 set_maximum_value)))
 		DBUG_RETURN(error);
-              if (get_one_option && get_one_option(optp->id, optp, argument))
+              if (get_one_option(optp->id, optp, argument))
                 DBUG_RETURN(EXIT_UNSPECIFIED_ERROR);
 	      break;
 	    }
@@ -616,7 +609,7 @@ int handle_options(int *argc, char ***argv,
 	  ((error= setval(optp, value, argument, set_maximum_value))) &&
           !option_is_loose)
 	DBUG_RETURN(error);
-      if (get_one_option && get_one_option(optp->id, optp, argument))
+      if (get_one_option(optp->id, optp, argument))
         DBUG_RETURN(EXIT_UNSPECIFIED_ERROR);
 
       (*argc)--; /* option handled (long), decrease argument count */

unittest/mysys/my_getopt-t.c

@@ -60,6 +60,13 @@ static struct my_option mopts_options[]=
   { 0, 0, 0, 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0}
 };
 
+my_bool dummy_get_one_option(int optid __attribute__((unused)),
+                             const struct my_option *opt __attribute__((unused)),
+                             char *argument __attribute__((unused)))
+{
+  return FALSE;
+}
+
 void run(const char *arg, ...)
 {
   va_list ap;
@@ -74,7 +81,7 @@ void run(const char *arg, ...)
   va_end(ap);
   arg_c= (int)(arg_v - arg_s);
   arg_v= arg_s;
-  res= handle_options(&arg_c, &arg_v, mopts_options, 0);
+  res= handle_options(&arg_c, &arg_v, mopts_options, &dummy_get_one_option);
 }
 
 int mopts1_argc= 4;
@@ -84,7 +91,7 @@ void test_mopts1()
   int rc;
   char **av= (char **)mopts1_argv;
 
-  rc= handle_options(&mopts1_argc, &av, mopts_options, NULL);
+  rc= handle_options(&mopts1_argc, &av, mopts_options, &dummy_get_one_option);
   ok( (rc == 0), "%s", "test_mopts1 call");
   ok( (mopts_num == 122), "%s", "test_mopts1 num");
   ok( (strncmp(mopts_str, "str", 4) == 0), "%s", "test_mopts1 str");
@@ -98,7 +105,7 @@ void test_mopts2()
   int rc;
   char **av= (char **)mopts2_argv;
 
-  rc= handle_options(&mopts2_argc, &av, mopts_options, NULL);
+  rc= handle_options(&mopts2_argc, &av, mopts_options, &dummy_get_one_option);
   ok( (rc == 0), "%s", "test_mopts2 call");
   ok( (mopts_num == 124), "%s", "test_mopts2 num");
   ok( (strncmp(mopts_str, "ddd", 4) == 0), "%s", "test_mopts2 str");
@@ -112,7 +119,7 @@ void test_mopts3()
   int rc;
   char **av= (char **)mopts3_argv;
 
-  rc= handle_options(&mopts3_argc, &av, mopts_options, NULL);
+  rc= handle_options(&mopts3_argc, &av, mopts_options, &dummy_get_one_option);
   ok( (rc == 0), "%s", "test_mopts3 call");
   ok( (mopts_num == 1000000L), "%s", "test_mopts3 num");
   ok( (strncmp(mopts_str, "ddd", 4) == 0), "%s", "test_mopts3 str");
@@ -126,7 +133,7 @@ void test_mopts4()
   int rc;
   char **av= (char **)mopts4_argv;
 
-  rc= handle_options(&mopts4_argc, &av, mopts_options, NULL);
+  rc= handle_options(&mopts4_argc, &av, mopts_options, &dummy_get_one_option);
   ok( (rc == 0), "%s", "test_mopts4 call");
   ok( (mopts_num == 1000000L), "%s", "test_mopts4 num");
   ok( (strncmp(mopts_str, "aa", 3) == 0), "%s", "test_mopts4 str");
@@ -140,7 +147,7 @@ void test_mopts5()
   int rc;
   char **av= (char **)mopts5_argv;
 
-  rc= handle_options(&mopts5_argc, &av, mopts_options, NULL);
+  rc= handle_options(&mopts5_argc, &av, mopts_options, &dummy_get_one_option);
   ok( (rc == 0), "%s", "test_mopts5 call");
   ok( (mopts_num == 1000000L), "%s", "test_mopts5 num");
   ok( (strncmp(mopts_str, "ddd", 4) == 0), "%s", "test_mopts5 str");
@@ -154,7 +161,7 @@ void test_mopts6()
   int rc;
   char **av= (char **)mopts6_argv;
 
-  rc= handle_options(&mopts6_argc, &av, mopts_options, NULL);
+  rc= handle_options(&mopts6_argc, &av, mopts_options, &dummy_get_one_option);
   ok( (rc == 0), "%s", "test_mopts6 call");
   ok( (mopts_num == 1000000L), "%s", "test_mopts6 num");
   ok( (strncmp(mopts_str, "ddd", 4) == 0), "%s", "test_mopts6 str");
@@ -168,7 +175,7 @@ void test_mopts7()
   int rc;
   char **av= (char **)mopts7_argv;
 
-  rc= handle_options(&mopts7_argc, &av, mopts_options, NULL);
+  rc= handle_options(&mopts7_argc, &av, mopts_options, &dummy_get_one_option);
   ok( (rc == 0), "%s", "test_mopts7 call");
   ok( (mopts_num == 1000000L), "%s", "test_mopts7 num");
   ok( (strncmp(mopts_str, "ddd", 4) == 0), "%s", "test_mopts7 str");
@@ -182,7 +189,7 @@ void test_mopts8()
   int rc;
   char **av= (char **)mopts8_argv;
 
-  rc= handle_options(&mopts8_argc, &av, mopts_options, NULL);
+  rc= handle_options(&mopts8_argc, &av, mopts_options, &dummy_get_one_option);
   ok( (rc == 0), "%s", "test_mopts8 call");
   ok( (mopts_num == 1000000L), "%s", "test_mopts7 num");
   ok( (strncmp(mopts_str, "ddd", 4) == 0), "%s", "test_mopts7 str");
@@ -196,7 +203,7 @@ void test_mopts9()
   int rc;
   char **av= (char **)mopts9_argv;
 
-  rc= handle_options(&mopts9_argc, &av, mopts_options, NULL);
+  rc= handle_options(&mopts9_argc, &av, mopts_options, &dummy_get_one_option);
   ok( (rc != 0), "%s", "test_mopts9 call");
 }
 
@@ -207,7 +214,7 @@ void test_mopts10()
   int rc;
   char **av= (char **)mopts10_argv;
 
-  rc= handle_options(&mopts10_argc, &av, mopts_options, NULL);
+  rc= handle_options(&mopts10_argc, &av, mopts_options, &dummy_get_one_option);
   ok( (rc != 0), "%s", "test_mopts10 call");
 }
 
@@ -238,17 +245,6 @@ my_bool auto_get_one_option(int optid __attribute__((unused)),
   return FALSE;
 }
 
-int auto1_argc= 3;
-const char *auto1_argv[]= {"auto1", "--anum=123", "--autoset-anum"};
-void test_auto1()
-{
-  int rc;
-  char **av= (char **)auto1_argv;
-
-  rc= handle_options(&auto1_argc, &av, auto_options, NULL);
-  ok( (rc == EXIT_ARGUMENT_INVALID), "%s", "test_auto1 call");
-}
-
 int auto2_argc= 3;
 const char *auto2_argv[]= {"auto2", "--num=123", "--autoset-num"};
 void test_auto2()
@@ -330,7 +326,7 @@ void test_max1()
   int rc;
   char **av= (char **)max1_argv;
 
-  rc= handle_options(&max1_argc, &av, max_options, NULL);
+  rc= handle_options(&max1_argc, &av, max_options, &dummy_get_one_option);
   ok( (rc == 0), "%s", "test_max1 call");
   ok( (mopts_num == 200), "%s", "test_max1 num");
   ok( (max_num == 1000001L), "%s", "test_max1 max_num");
@@ -342,7 +338,7 @@ void test_max2()
   int rc;
   char **av= (char **)max2_argv;
 
-  rc= handle_options(&max2_argc, &av, max_options, NULL);
+  rc= handle_options(&max2_argc, &av, max_options, &dummy_get_one_option);
   ok( (rc == 0), "%s", "test_max2 call");
   ok( (mopts_num == 200), "%s", "test_max2 num");
   ok( (max_num == 100), "%s", "test_max2 max_num");
@@ -351,7 +347,7 @@ void test_max2()
 int main(int argc __attribute__((unused)), char **argv)
 {
   MY_INIT(argv[0]);
-  plan(4*8 + 1*4 + 3*4 + 3*2 + 3);
+  plan(4*8 + 1*4 + 3*4 + 3*2 + 2);
 
   /* gcc 4.1.2 doesn't want it in the initializer, we have to do it run-time */
   mopts_options[0].def_value= (intptr)"ddd";
@@ -367,7 +363,6 @@ int main(int argc __attribute__((unused)), char **argv)
 
   test_mopts9();
   test_mopts10();
-  test_auto1();
   test_auto2();
 
   test_auto3();