Fixed Mageia Bug 12355: mariadb produces warning messages while loading timezone information

- Warnings about wrong symlink messages or non-timezone files with '.tab' are now only given if run with --verbose
- Added long option handling
- Added --help, --verbose and --version options


sql/tztime.cc:
  Add usage of my_getopt, to get long options

sql/tztime.cc

@@ -41,6 +41,8 @@
 #include <my_time.h>
 #include "tztime.h"
 #include <my_sys.h>
+#include <mysql_version.h>
+#include <my_getopt.h>
 #endif
 
 #include "tzfile.h"
@@ -63,6 +65,8 @@
 #endif /* !defined(DBUG_OFF) */
 #endif /* defined(TZINFO2SQL) || defined(TESTTIME) */
 
+#define PROGRAM_VERSION "1.1"
+
 /* Structure describing local time type (e.g. Moscow summer time (MSD)) */
 typedef struct ttinfo
 {
@@ -2386,7 +2390,6 @@ void Time_zone::adjust_leap_second(MYSQL_TIME *t)
   tables.
 */
 
-
 /*
   Print info about time zone described by TIME_ZONE_INFO struct as
   SQL statements populating mysql.time_zone* tables.
@@ -2471,6 +2474,15 @@ MEM_ROOT tz_storage;
 char fullname[FN_REFLEN + 1];
 char *root_name_end;
 
+/*
+  known file types that exist in the zoneinfo directory that are safe to
+  silently skip
+*/
+const char *known_extensions[]= {
+  ".tab",
+  NullS
+};
+
 
 /*
   Recursively scan zoneinfo directory and print all found time zone
@@ -2479,6 +2491,8 @@ char *root_name_end;
   SYNOPSIS
     scan_tz_dir()
       name_end - pointer to end of path to directory to be searched.
+      symlink_recursion_level   How many symlink directory levels are used
+      verbose			>0 if we should print warnings
 
   DESCRIPTION
     This auxiliary recursive function also uses several global
@@ -2494,7 +2508,7 @@ char *root_name_end;
 
 */
 my_bool
-scan_tz_dir(char * name_end, uint symlink_recursion_level)
+scan_tz_dir(char * name_end, uint symlink_recursion_level, uint verbose)
 {
   MY_DIR *cur_dir;
   char *name_end_tmp;
@@ -2534,12 +2548,21 @@ scan_tz_dir(char * name_end, uint symlink_recursion_level)
             following such symlinks infinitely:
               /usr/share/zoneinfo/posix/posix/posix/.../posix/
           */
+
+          /*
+            This is a normal case and not critical. only print warning if
+            verbose mode is choosen.
+          */
+          if (verbose > 0)
+          {
             fflush(stdout);
             fprintf(stderr, "Warning: Skipping directory '%s': "
                     "to avoid infinite symlink recursion.\n", fullname);
             continue;
           }
-        if (scan_tz_dir(name_end_tmp, symlink_recursion_level + is_symlink))
+        }
+        if (scan_tz_dir(name_end_tmp, symlink_recursion_level + is_symlink,
+                        verbose))
         {
           my_dirend(cur_dir);
           return 1;
@@ -2551,12 +2574,30 @@ scan_tz_dir(char * name_end, uint symlink_recursion_level)
         if (!tz_load(fullname, &tz_info, &tz_storage))
           print_tz_as_sql(root_name_end + 1, &tz_info);
         else
+        {
+          /*
+            Some systems (like debian, opensuse etc) have description
+            files (.tab).  We skip these silently if verbose is > 0
+          */
+          const char *current_ext= fn_ext(fullname);
+          my_bool known_ext= 0;
+
+          for (const char **ext= known_extensions ; *ext ; ext++)
+          {
+            if (!strcmp(*ext, current_ext))
+            {
+              known_ext= 1;
+              break;
+            }
+          }
+          if (verbose > 0 || !known_ext)
           {
             fflush(stdout);
             fprintf(stderr,
                     "Warning: Unable to load '%s' as time zone. Skipping it.\n",
                     fullname);
           }
+        }
         free_root(&tz_storage, MYF(0));
       }
       else
@@ -2574,30 +2615,109 @@ scan_tz_dir(char * name_end, uint symlink_recursion_level)
 }
 
 
+my_bool opt_leap, opt_verbose;
+
+static const char *load_default_groups[]=
+{ "mysql_tzinfo_to_sql", 0};
+
+static struct my_option my_long_options[] =
+{
+  {"help", '?', "Display this help and exit.", 0, 0, 0, GET_NO_ARG, NO_ARG,
+   0, 0, 0, 0, 0, 0},
+#ifdef DBUG_OFF
+  {"debug", '#', "This is a non-debug version. Catch this and exit",
+   0,0, 0, GET_DISABLED, OPT_ARG, 0, 0, 0, 0, 0, 0},
+#else
+  {"debug", '#', "Output debug log. Often this is 'd:t:o,filename'.",
+   0, 0, 0, GET_STR, OPT_ARG, 0, 0, 0, 0, 0, 0},
+#endif
+  {"leap", 'l', "Print the leap second information from the given time zone file. By convention, when --leap is used the next argument is the timezonefile",
+   &opt_leap, &opt_leap, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
+  {"verbose", 'v', "Write non critical warnings",
+   &opt_verbose, &opt_verbose, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
+  {"version", 'V', "Output version information and exit.",
+   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
+  { 0, 0, 0, 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0}
+};
+
+
+C_MODE_START
+static my_bool get_one_option(int optid, const struct my_option *,
+                              char *argument);
+C_MODE_END
+
+static void print_version(void)
+{
+  printf("%s  Ver %s Distrib %s, for %s (%s)\n",my_progname, PROGRAM_VERSION,
+	 MYSQL_SERVER_VERSION,SYSTEM_TYPE,MACHINE_TYPE);
+}
+
+static void print_usage(void)
+{
+  fprintf(stderr, "Usage:\n");
+  fprintf(stderr, " %s [options] timezonedir\n", my_progname);
+  fprintf(stderr, " %s [options] timezonefile timezonename\n", my_progname);
+  print_defaults("my",load_default_groups);
+  puts("");
+  my_print_help(my_long_options);
+  my_print_variables(my_long_options);
+}
+
+
+static my_bool
+get_one_option(int optid, const struct my_option *opt, char *argument)
+{
+  switch(optid) {
+  case '#':
+#ifndef DBUG_OFF
+    DBUG_PUSH(argument ? argument : "d:t:S:i:O,/tmp/mysq_tzinfo_to_sql.trace");
+#endif
+    break;
+  case '?':
+    print_version();
+    puts("");
+    print_usage();
+    exit(0);
+  case 'V':
+    print_version();
+    exit(0);
+  }
+  return 0;
+}
+
+
 int
 main(int argc, char **argv)
 {
+  char **default_argv;
   MY_INIT(argv[0]);
 
-  if (argc != 2 && argc != 3)
+  if (load_defaults("my",load_default_groups,&argc,&argv))
+    exit(1);
+
+  default_argv= argv;
+
+  if ((handle_options(&argc, &argv, my_long_options, get_one_option)))
+    exit(1);
+
+  if ((argc != 1 && argc != 2) || (opt_leap && argc != 1))
   {
-    fprintf(stderr, "Usage:\n");
-    fprintf(stderr, " %s timezonedir\n", argv[0]);
-    fprintf(stderr, " %s timezonefile timezonename\n", argv[0]);
-    fprintf(stderr, " %s --leap timezonefile\n", argv[0]);
+    print_usage();
+    free_defaults(default_argv);
     return 1;
   }
-
-  if (argc == 2)
+  if (argc == 1 && !opt_leap)
   {
-    root_name_end= strmake_buf(fullname, argv[1]);
+    /* Argument is timezonedir */
+
+    root_name_end= strmake_buf(fullname, argv[0]);
 
     printf("TRUNCATE TABLE time_zone;\n");
     printf("TRUNCATE TABLE time_zone_name;\n");
     printf("TRUNCATE TABLE time_zone_transition;\n");
     printf("TRUNCATE TABLE time_zone_transition_type;\n");
 
-    if (scan_tz_dir(root_name_end, 0))
+    if (scan_tz_dir(root_name_end, 0, opt_verbose))
     {
       fflush(stdout);
       fprintf(stderr, "There were fatal errors during processing "
@@ -2612,32 +2732,27 @@ main(int argc, char **argv)
   }
   else
   {
+    /*
+      First argument is timezonefile.
+      The second is timezonename if opt_leap is not given
+    */
     init_alloc_root(&tz_storage, 32768, 0);
 
-    if (strcmp(argv[1], "--leap") == 0)
-    {
-      if (tz_load(argv[2], &tz_info, &tz_storage))
+    if (tz_load(argv[0], &tz_info, &tz_storage))
     {
       fflush(stdout);
-        fprintf(stderr, "Problems with zoneinfo file '%s'\n", argv[2]);
+      fprintf(stderr, "Problems with zoneinfo file '%s'\n", argv[0]);
       return 1;
     }
+    if (opt_leap)
       print_tz_leaps_as_sql(&tz_info);
-    }
     else
-    {
-      if (tz_load(argv[1], &tz_info, &tz_storage))
-      {
-        fflush(stdout);
-        fprintf(stderr, "Problems with zoneinfo file '%s'\n", argv[2]);
-        return 1;
-      }
-      print_tz_as_sql(argv[2], &tz_info);
-    }
+      print_tz_as_sql(argv[1], &tz_info);
 
     free_root(&tz_storage, MYF(0));
   }
 
+  free_defaults(default_argv);
   my_end(0);
   return 0;
 }