src/bin/package_repo/package_repo.cpp

   1 /*
   2  * Copyright 2011, Oliver Tappe <zooey@hirschkaefer.de>
   3  * Distributed under the terms of the MIT License.
   4  */
   5
   6
   7 #include "package_repo.h"
   8
   9 #include <errno.h>
  10 #include <getopt.h>
  11 #include <stdio.h>
  12 #include <stdlib.h>
  13 #include <string.h>
  14
  15 extern const char* __progname;
  16 const char* kCommandName = __progname;
  17
  18
  19 static const char* kUsage =
  20         "Usage: %s <command> <command args>\n"
  21         "Creates or inspects a Haiku package repository file.\n"
  22         "\n"
  23         "Commands:\n"
  24         "  create [ <options> ] <repo-info> <package-file ...> \n"
  25         "    Creates a package repository from the information found in \n"
  26         "    <repo-info>, adding the given package files.\n"
  27         "\n"
  28         "    -C <dir>   - Change to directory <dir> before starting.\n"
  29         "    -q         - be quiet (don't show any output except for errors).\n"
  30         "    -v         - be verbose (list package attributes as encountered).\n"
  31         "\n"
  32         "  list [ <options> ] <package-repo>\n"
  33         "    Lists the contents of package repository file <package-repo>.\n"
  34         "\n"
  35         "    -v         - be verbose (list attributes of all packages found).\n"
  36         "\n"
  37         "  update [ <options> ] <source-repo> <new-repo> <package-list-file> \n"
  38         "    Creates package repository file <new-repo> with all the packages\n"
  39         "    contained in <package-list-file>. If possible, package-infos are\n"
  40         "    taken from <source-repo> to avoid the need for recomputing the\n"
  41         "    checksum of all packages.\n"
  42         "    <old-repo> and <new-repo> can be the same file.\n"
  43         "\n"
  44         "    -C <dir>   - Change to directory <dir> before starting.\n"
  45         "    -q         - be quiet (don't show any output except for errors).\n"
  46         "    -v         - be verbose (list package attributes as encountered).\n"
  47         "\n"
  48         "Common Options:\n"
  49         "  -h, --help   - Print this usage info.\n"
  50 ;
  51
  52
  53 void
  54 print_usage_and_exit(bool error)
  55 {
  56     fprintf(error ? stderr : stdout, kUsage, kCommandName);
  57     exit(error ? 1 : 0);
  58 }
  59
  60
  61 int
  62 main(int argc, const char* const* argv)
  63 {
  64         if (argc < 2)
  65                 print_usage_and_exit(true);
  66
  67         const char* command = argv[1];
  68         if (strcmp(command, "create") == 0)
  69                 return command_create(argc - 1, argv + 1);
  70
  71         if (strcmp(command, "list") == 0)
  72                 return command_list(argc - 1, argv + 1);
  73
  74         if (strcmp(command, "update") == 0)
  75                 return command_update(argc - 1, argv + 1);
  76
  77         if (strcmp(command, "help") == 0)
  78                 print_usage_and_exit(false);
  79         else
  80                 print_usage_and_exit(true);
  81
  82         // never gets here
  83         return 0;
  84 }