ACE/FAQ/APG/Config

/**
 * $Id: ARGV_Example.cpp 80826 2008-03-04 14:51:23Z wotte $
 *
 * ACE_ARGV examples not in a larger program. Sample code from The ACE
 * Programmer's Guide, Copyright 2003 Addison-Wesley. All Rights Reserved.
 */
 
#include "ace/os_include/os_netdb.h"
#include "ace/OS_NS_string.h"
#include "ace/Log_Msg.h"
 
// Listing 1 code/ch04
#include "ace/ARGV.h"
#include "ace/Get_Opt.h"
 
int ACE_TMAIN (int, ACE_TCHAR *[])
{
  static const ACE_TCHAR options[] = ACE_TEXT (":f:h:");
  static const ACE_TCHAR cmdline[] =
    ACE_TEXT ("-f /home/managed.cfg -h $HOSTNAME");
  ACE_ARGV cmdline_args (cmdline);
  ACE_Get_Opt cmd_opts (cmdline_args.argc (),
                        cmdline_args.argv (),
                        options,
                        0);          // Don't skip any args
 
// Listing 1
 
  int option;
  ACE_TCHAR config_file[MAXPATHLEN];
  ACE_TCHAR hostname[MAXHOSTNAMELEN];
  ACE_OS_String::strcpy (config_file, ACE_TEXT ("HAStatus.conf"));
  ACE_OS_String::strcpy (hostname, ACE_TEXT ("not set"));
  while ((option = cmd_opts ()) != EOF)
    switch (option) {
    case 'f':
      ACE_OS_String::strncpy (config_file,
                              cmd_opts.opt_arg (),
                              MAXPATHLEN);
      break;
 
    case 'h':
      ACE_OS_String::strncpy (hostname,
                              cmd_opts.opt_arg (),
                              MAXHOSTNAMELEN);
      break;
 
    case ':':
      ACE_ERROR_RETURN
        ((LM_ERROR, ACE_TEXT ("-%c requires an argument\n"),
          cmd_opts.opt_opt ()), -1);
 
 
    default:
      ACE_ERROR_RETURN
        ((LM_ERROR, ACE_TEXT ("Parse error.\n")), -1);
    }
 
  ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("Config file: %s\n"), config_file));
  ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("Hostname: %s\n"), hostname));
  return 0;
}

/**
 * $Id: Get_Opt.cpp 80826 2008-03-04 14:51:23Z wotte $
 *
 * ACE_Get_Opt examples not in a larger program. Sample code from The ACE
 * Programmer's Guide, Copyright 2003 Addison-Wesley. All Rights Reserved.
 */
 
#include "ace/OS_NS_string.h"
#include "ace/Get_Opt.h"
#include "ace/Log_Msg.h"
 
int
ACE_TMAIN (int argc, ACE_TCHAR *argv[])
{
 
  // Example for a long option without a corresponding short option.
  // Just put some context here so the following compiles and runs.
  static const ACE_TCHAR options[] = ACE_TEXT (":f:");
  ACE_Get_Opt cmd_opts (argc, argv, options);
 
  // Listing 1 code/ch04
  cmd_opts.long_option (ACE_TEXT ("cool_option"));
  cmd_opts.long_option (ACE_TEXT ("the_answer"), 42);
  // Listing 1
 
  int option;
  ACE_TCHAR config_file[MAXPATHLEN];
  ACE_OS_String::strcpy (config_file, ACE_TEXT ("HAStatus.conf"));
  while ((option = cmd_opts ()) != EOF)
    switch (option) {
    case 'f':
      ACE_OS_String::strncpy (config_file,
                              cmd_opts.opt_arg (),
                              MAXPATHLEN);
      break;
 
      // Listing 2 code/ch04
    case 0:
      ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("Yes, very cool.\n")));
      break;
 
    case 42:
      ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("the_answer is 42\n")));
      break;
      // Listing 2
 
    case ':':
      ACE_ERROR_RETURN
        ((LM_ERROR, ACE_TEXT ("-%c requires an argument\n"),
          cmd_opts.opt_opt ()), -1);
 
 
    default:
      ACE_ERROR_RETURN
        ((LM_ERROR, ACE_TEXT ("Parse error.\n")), -1);
    }
 
  return 0;
}

/**
 * $Id: Get_Opt_Long.cpp 80826 2008-03-04 14:51:23Z wotte $
 *
 * ACE_Get_Opt long_only examples. Sample code from The ACE
 * Programmer's Guide, Copyright 2003 Addison-Wesley. All Rights Reserved.
 */
 
#include "ace/OS_NS_string.h"
#include "ace/Get_Opt.h"
#include "ace/Log_Msg.h"
 
int
ACE_TMAIN (int argc, ACE_TCHAR *argv[])
{
 
  static const ACE_TCHAR options[] = ACE_TEXT (":f:");
  ACE_Get_Opt cmd_opts
    (argc, argv, options, 1, 0, ACE_Get_Opt::PERMUTE_ARGS, 1);
  if (cmd_opts.long_option
      (ACE_TEXT ("config"), 'f', ACE_Get_Opt::ARG_REQUIRED) == -1)
    return -1;
 
  int option;
  ACE_TCHAR config_file[MAXPATHLEN];
  ACE_OS_String::strcpy (config_file, ACE_TEXT ("HAStatus.conf"));
  while ((option = cmd_opts ()) != EOF)
    switch (option) {
    case 'f':
      ACE_OS_String::strncpy (config_file,
                              cmd_opts.opt_arg (),
                              MAXPATHLEN);
      break;
 
    case ':':
      ACE_ERROR_RETURN
        ((LM_ERROR, ACE_TEXT ("-%c requires an argument\n"),
          cmd_opts.opt_opt ()), -1);
 
 
    default:
      ACE_ERROR_RETURN
        ((LM_ERROR, ACE_TEXT ("Parse error.\n")), -1);
    }
 
  ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("Config file is %s\n"), config_file));
 
  return 0;
}

/**
 * $Id: HA_Status.cpp 80826 2008-03-04 14:51:23Z wotte $
 *
 * Home Automation Status server. Sample code from The ACE Programmer's Guide,
 * Copyright 2003 Addison-Wesley. All Rights Reserved.
 */
 
#include "ace/OS_NS_string.h"
#include "ace/Configuration.h"
#include "ace/Configuration_Import_Export.h"
#include "ace/Get_Opt.h"
#include "ace/Log_Msg.h"
#include "ace/INET_Addr.h"
#include "ace/Service_Object.h"
 
class HA_Status : public ACE_Service_Object
{
public:
  virtual int init (int argc, ACE_TCHAR *argv[]);
 
private:
  ACE_INET_Addr listen_addr_;
};
 
 
int
HA_Status::init (int argc, ACE_TCHAR *argv[])
{
 
  // Do ACE_Get_Opt and get conf file name, read out the sections
  // and print the names.
 
  // Listing 1 code/ch04
  static const ACE_TCHAR options[] = ACE_TEXT (":f:");
  ACE_Get_Opt cmd_opts (argc, argv, options);
  if (cmd_opts.long_option
      (ACE_TEXT ("config"), 'f', ACE_Get_Opt::ARG_REQUIRED) == -1)
    return -1;
  int option;
  ACE_TCHAR config_file[MAXPATHLEN];
  ACE_OS::strcpy (config_file, ACE_TEXT ("HAStatus.conf"));
  while ((option = cmd_opts ()) != EOF)
    switch (option) {
    case 'f':
      ACE_OS::strncpy (config_file,
                       cmd_opts.opt_arg (),
                       MAXPATHLEN);
      break;
    case ':':
      ACE_ERROR_RETURN
        ((LM_ERROR, ACE_TEXT ("-%c requires an argument\n"),
          cmd_opts.opt_opt ()), -1);
    default:
      ACE_ERROR_RETURN
        ((LM_ERROR, ACE_TEXT ("Parse error.\n")), -1);
    }
  // Listing 1
 
  // Listing 2 code/ch04
  ACE_Configuration_Heap config;
  if (config.open () == -1)
    ACE_ERROR_RETURN
      ((LM_ERROR, ACE_TEXT ("%p\n"), ACE_TEXT ("config")), -1);
  ACE_Registry_ImpExp config_importer (config);
  if (config_importer.import_config (config_file) == -1)
    ACE_ERROR_RETURN
      ((LM_ERROR, ACE_TEXT ("%p\n"), config_file), -1);
 
  ACE_Configuration_Section_Key status_section;
  if (config.open_section (config.root_section (),
                           ACE_TEXT ("HAStatus"),
                           0,
                           status_section) == -1)
    ACE_ERROR_RETURN ((LM_ERROR, ACE_TEXT ("%p\n"),
                       ACE_TEXT ("Can't open HAStatus section")),
                      -1);
 
  u_int status_port;
  if (config.get_integer_value (status_section,
                                ACE_TEXT ("ListenPort"),
                                status_port) == -1)
    ACE_ERROR_RETURN
      ((LM_ERROR,
        ACE_TEXT ("HAStatus ListenPort does not exist\n")),
       -1);
  this->listen_addr_.set (static_cast<u_short> (status_port));
  // Listing 2
 
  return 0;
}
 
int
ACE_TMAIN (int argc, ACE_TCHAR *argv[])
{
  HA_Status status;
  status.init (argc, argv);
  return 0;
}