git.m6w6.name Git - awesomized/libmemcached/blob - clients/memerror.cc

   1 /* LibMemcached
   2  * Copyright (C) 2006-2009 Brian Aker
   3  * All rights reserved.
   4  *
   5  * Use and distribution licensed under the BSD license.  See
   6  * the COPYING file in the parent directory for full text.
   7  *
   8  * Summary:
   9  *
  10  */
  11 #include "config.h"
  12
  13 #include <cerrno>
  14 #include <cstdio>
  15 #include <cstdlib>
  16 #include <cstring>
  17 #include <climits>
  18
  19 #include <getopt.h>
  20 #include <iostream>
  21 #include <unistd.h>
  22
  23 #include <libmemcached/memcached.h>
  24
  25 #include "utilities.h"
  26
  27 #define PROGRAM_NAME "memerror"
  28 #define PROGRAM_DESCRIPTION "Translate a memcached errror code into a string."
  29
  30
  31 /* Prototypes */
  32 void options_parse(int argc, char *argv[]);
  33
  34 int main(int argc, char *argv[])
  35 {
  36   options_parse(argc, argv);
  37
  38   if (argc < 2)
  39   {
  40     return EXIT_FAILURE;
  41   }
  42
  43   while (optind < argc)
  44   {
  45     errno= 0;
  46     char *nptr;
  47     unsigned long value= strtoul(argv[optind], &nptr, 10);
  48
  49     if ((nptr == argv[optind] and value == 0) or
  50         (value == ULONG_MAX and errno == ERANGE) or
  51         (value == 0 and errno == EINVAL))
  52     {
  53       std::cerr << "strtoul() was unable to parse given value" << std::endl;
  54       return EXIT_FAILURE;
  55     }
  56
  57     if (value < MEMCACHED_MAXIMUM_RETURN)
  58     {
  59       std::cout << memcached_strerror(NULL, (memcached_return_t)value) << std::endl;
  60     }
  61     else
  62     {
  63       std::cerr << memcached_strerror(NULL, MEMCACHED_MAXIMUM_RETURN) << std::endl;
  64       return EXIT_FAILURE;
  65     }
  66
  67     optind++;
  68   }
  69
  70   return EXIT_SUCCESS;
  71 }
  72
  73
  74 void options_parse(int argc, char *argv[])
  75 {
  76   static struct option long_options[]=
  77     {
  78       {(OPTIONSTRING)"version", no_argument, NULL, OPT_VERSION},
  79       {(OPTIONSTRING)"help", no_argument, NULL, OPT_HELP},
  80       {0, 0, 0, 0},
  81     };
  82
  83   bool opt_version= false;
  84   bool opt_help= false;
  85   int option_index= 0;
  86   while (1)
  87   {
  88     int option_rv= getopt_long(argc, argv, "Vhvds:", long_options, &option_index);
  89     if (option_rv == -1)
  90     {
  91       break;
  92     }
  93
  94     switch (option_rv)
  95     {
  96     case 0:
  97       break;
  98
  99     case OPT_VERSION: /* --version or -V */
 100       opt_version= true;
 101       break;
 102
 103     case OPT_HELP: /* --help or -h */
 104       opt_help= true;
 105       break;
 106
 107     case '?':
 108       /* getopt_long already printed an error message. */
 109       exit(EXIT_FAILURE);
 110
 111     default:
 112       exit(EXIT_FAILURE);
 113     }
 114   }
 115
 116   if (opt_version)
 117   {
 118     version_command(PROGRAM_NAME);
 119     exit(EXIT_SUCCESS);
 120   }
 121
 122   if (opt_help)
 123   {
 124     help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION, long_options, NULL);
 125     exit(EXIT_SUCCESS);
 126   }
 127 }