git.m6w6.name Git - awesomized/libmemcached/blob - src/memcat.c

   1 #include <stdio.h>
   2 #include <inttypes.h>
   3 #include <string.h>
   4 #include <unistd.h>
   5 #include <getopt.h>
   6 #include <memcached.h>
   7
   8 #include "utilities.h"
   9
  10 #define PROGRAM_NAME "memcat"
  11 #define PROGRAM_DESCRIPTION "Cat a set of key values to stdout."
  12
  13
  14 /* Prototypes */
  15 void options_parse(int argc, char *argv[]);
  16
  17 static int opt_verbose= 0;
  18 static int opt_displayflag= 0;
  19 static char *opt_servers= NULL;
  20 static char *opt_hash= NULL;
  21
  22 int main(int argc, char *argv[])
  23 {
  24   memcached_st *memc;
  25   char *string;
  26   size_t string_length;
  27   uint32_t flags;
  28   memcached_return rc;
  29   memcached_server_st *servers;
  30
  31   options_parse(argc, argv);
  32
  33   if (!opt_servers)
  34   {
  35     char *temp;
  36
  37     if ((temp= getenv("MEMCACHED_SERVERS")))
  38       opt_servers= strdup(temp);
  39     else
  40       exit(1);
  41   }
  42
  43   memc= memcached_create(NULL);
  44   process_hash_option(memc, opt_hash);
  45
  46   servers= memcached_servers_parse(opt_servers);
  47
  48   memcached_server_push(memc, servers);
  49   memcached_server_list_free(servers);
  50
  51   while (optind < argc)
  52   {
  53     string= memcached_get(memc, argv[optind], strlen(argv[optind]),
  54                           &string_length, &flags, &rc);
  55     if (rc == MEMCACHED_SUCCESS)
  56     {
  57       if (opt_displayflag)
  58       {
  59         if (opt_verbose)
  60           printf("key: %s\nflags: ", argv[optind]);
  61         printf("%x\n", flags);
  62       }
  63       else
  64       {
  65         if (opt_verbose)
  66           printf("key: %s\nflags: %x\nlength: %zu\nvalue: ",
  67                  argv[optind], flags, string_length);
  68         printf("%.*s\n", (int)string_length, string);
  69         free(string);
  70       }
  71     }
  72     else if (rc != MEMCACHED_NOTFOUND)
  73     {
  74       fprintf(stderr, "memcat: %s: memcache error %s",
  75               argv[optind], memcached_strerror(memc, rc));
  76       if (memc->cached_errno)
  77         fprintf(stderr, " system error %s", strerror(memc->cached_errno));
  78       fprintf(stderr, "\n");
  79     }
  80     optind++;
  81   }
  82
  83   memcached_free(memc);
  84
  85   if (opt_servers)
  86     free(opt_servers);
  87   if (opt_hash)
  88     free(opt_hash);
  89
  90   return 0;
  91 }
  92
  93
  94 void options_parse(int argc, char *argv[])
  95 {
  96   int option_index= 0;
  97   int option_rv;
  98
  99   memcached_programs_help_st help_options[]=
 100   {
 101     {0},
 102   };
 103
 104   static struct option long_options[]=
 105     {
 106       {"version", no_argument, NULL, OPT_VERSION},
 107       {"help", no_argument, NULL, OPT_HELP},
 108       {"verbose", no_argument, &opt_verbose, OPT_VERBOSE},
 109       {"debug", no_argument, &opt_verbose, OPT_DEBUG},
 110       {"servers", required_argument, NULL, OPT_SERVERS},
 111       {"flag", no_argument, &opt_displayflag, OPT_FLAG},
 112       {"hash", required_argument, NULL, OPT_HASH},
 113       {0, 0, 0, 0},
 114     };
 115
 116   while (1)
 117   {
 118     option_rv= getopt_long(argc, argv, "Vhvds:", long_options, &option_index);
 119     if (option_rv == -1) break;
 120     switch (option_rv)
 121     {
 122     case 0:
 123       break;
 124     case OPT_VERBOSE: /* --verbose or -v */
 125       opt_verbose = OPT_VERBOSE;
 126       break;
 127     case OPT_DEBUG: /* --debug or -d */
 128       opt_verbose = OPT_DEBUG;
 129       break;
 130     case OPT_VERSION: /* --version or -V */
 131       version_command(PROGRAM_NAME);
 132       break;
 133     case OPT_HELP: /* --help or -h */
 134       help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION, long_options, help_options);
 135       break;
 136     case OPT_SERVERS: /* --servers or -s */
 137       opt_servers= strdup(optarg);
 138       break;
 139     case OPT_HASH:
 140       opt_hash= strdup(optarg);
 141       break;
 142     case '?':
 143       /* getopt_long already printed an error message. */
 144       exit(1);
 145     default:
 146       abort();
 147     }
 148   }
 149 }