C++ CFG_END函數代碼示例

bool readVarConfig(cfg_t **cfg) {
	cfg_opt_t device_opts[] = {
		CFG_INT(const_cast<char *>("state"), 0, CFGF_NONE),
		CFG_STR(const_cast<char *>("stateValue"), const_cast<char *>(""), CFGF_NONE),
		CFG_END()
	};

	cfg_opt_t opts[] = {
		CFG_SEC(const_cast<char *>("device"), device_opts, CFGF_MULTI | CFGF_TITLE),
		CFG_END()
	};

	FILE *fp = fopen(VAR_CONFIG_FILE, "re");  // e for setting O_CLOEXEC on the file handle
	if (!fp) {
		Log::warning("Unable to open var config file, %s", VAR_CONFIG_FILE);
		return false;
	}
	(*cfg) = cfg_init(opts, CFGF_NOCASE);
	if (cfg_parse_fp((*cfg), fp) == CFG_PARSE_ERROR) {
		(*cfg) = 0;
		fclose(fp);
		Log::warning("Unable to parse var config file, %s", VAR_CONFIG_FILE);
		return false;
	}

	fclose(fp);
	return true;
}

void read_config(void)
{
    static cfg_opt_t arg_opts[] = {
        CFG_STR("value", "default", CFGF_NONE),
        CFG_END()
    };
    cfg_opt_t opts[] = {
        CFG_INT("delay", 3, CFGF_NONE),
        CFG_STR("message", "This is a message", CFGF_NONE),
        CFG_SEC("argument", arg_opts, CFGF_MULTI | CFGF_TITLE),
        CFG_END()
    };

    char *buf = "" \
        " delay = 3\n" \
        "# message = \"asdfasfasfd tersf\"\n" \
        " argument one { value = 1 }\n" \
        " argument two { value=foo}\n";

    cfg_free(cfg);

    cfg = cfg_init(opts, 0);
    cfg_parse_buf(cfg, buf);
    cfg_parse(cfg, config_filename);
}

int main(void)
{
	static cfg_opt_t section_opts[] = {
		CFG_STR("prop", 0, CFGF_NONE),
		CFG_END()
	};

	cfg_opt_t opts[] = {
		CFG_SEC("section", section_opts, CFGF_TITLE | CFGF_MULTI),
		CFG_END()
	};

	const char *config_data =
		"section title_one { prop = 'value_one' }\n"
		"section title_two { prop = 'value_two' }\n";

	int rc;
	cfg_t *cfg = cfg_init(opts, CFGF_NONE);

	fail_unless(cfg);

	rc = cfg_parse_buf(cfg, config_data);
	fail_unless(rc == CFG_SUCCESS);

	fail_unless(cfg_addtsec(cfg, "section", "title_three"));
	fail_unless(cfg_size(cfg, "section") == 3);
	fail_unless(cfg_title(cfg_gettsec(cfg, "section", "title_three")));

	/* attempt to add a pre-existing section should fail */
	fail_unless(!cfg_addtsec(cfg, "section", "title_three"));

	cfg_free(cfg);

	return 0;
}

bool SyncLogger::ParseFile(const char* pszHash)
{
	if (strcmp(m_szCurShare, pszHash) == 0)
	{
		// File is currently parsed, there is no need to parse it again.
		return true;
	}

    cfg_opt_t modEntry[] =
    {
        // Parses within the group.
        CFG_STR(FILE_PATH_VARNAME, FILE_PATH_DEFAULT, CFGF_NONE),
        CFG_STR(MOD_TIME_VARNAME, MOD_TIME_DEFAULT, CFGF_NONE),
        CFG_STR(MOD_TYPE_VARNAME, MOD_TYPE_DEFAULT, CFGF_NONE),
        CFG_END()
    };
    cfg_opt_t entries[] =
    {
        // Parses the single groups.
        CFG_SEC(MOD_NUMBER_VARNAME, modEntry, CFGF_TITLE | CFGF_MULTI),
        CFG_END()
    };

    // Initializes the parser.
    m_pCFG = cfg_init(entries, CFGF_NONE);

    // Parses the file.
	char szLogName[MAX_PATH];
	CalcLogFileName(pszHash, szLogName);
    if (cfg_parse(m_pCFG, szLogName) == CFG_PARSE_ERROR)
        return false;
    return true;
}

cfg_t *parse_conf(const char *filename)
{
    cfg_opt_t process_opts[] = {
        CFG_STR("comm", 0, CFGF_NODEFAULT),
        CFG_STR("args", 0, CFGF_NODEFAULT),
        CFG_STR("pre", 0, CFGF_NONE),
        CFG_END()
    };

    cfg_opt_t opts[] = {
        CFG_SEC("process", process_opts, CFGF_MULTI | CFGF_TITLE),
        CFG_INT("frequency", 10, CFGF_NONE),
        CFG_END()
    };

    cfg_t *cfg = cfg_init(opts, CFGF_NONE);
    //cfg_set_validate_func(cfg, "bookmark|port", conf_validate_port);
    //cfg_set_validate_func(cfg, "bookmark", conf_validate_bookmark);

    switch(cfg_parse(cfg, filename))
    {
        case CFG_FILE_ERROR:
            printf("warning: configuration file '%s' could not be read: %s\n",
                    filename, strerror(errno));
            printf("continuing with default values...\n\n");
        case CFG_SUCCESS:
            break;
        case CFG_PARSE_ERROR:
            return 0;
    }

    return cfg;
}

cfg_t *parse_conf(char *conf)
{
	cfg_opt_t provider_opts[] = {
		CFG_STR     ("username",  0, CFGF_NONE),
		CFG_STR     ("password",  0, CFGF_NONE),
		CFG_STR_LIST("alias",     0, CFGF_NONE),
		CFG_END()
	};
	cfg_opt_t opts[] = {
		CFG_BOOL("syslog",	  cfg_false, CFGF_NONE),
		CFG_BOOL("wildcard",	  cfg_false, CFGF_NONE),
		CFG_STR ("bind",	  0, CFGF_NONE),
		CFG_INT ("period",	  60, CFGF_NONE),
		CFG_INT ("startup-delay", 0, CFGF_NONE),
		CFG_INT ("forced-update", 720000, CFGF_NONE),
		CFG_SEC ("provider", provider_opts, CFGF_MULTI | CFGF_TITLE),
		CFG_END()
	};
	cfg_t *cfg = cfg_init(opts, CFGF_NONE);

	switch (cfg_parse(cfg, conf)) {
	case CFG_FILE_ERROR:
		fprintf(stderr, "Cannot read configuration file %s: %s\n", conf, strerror(errno));

	case CFG_PARSE_ERROR:
		return NULL;

	case CFG_SUCCESS:
		break;
	}

    return cfg;
}

int main(void)
{
	cfg_opt_t sub_opts[] = {
		CFG_BOOL("bool", cfg_false, CFGF_NONE),
		CFG_STR("string", NULL, CFGF_NONE),
		CFG_INT("int", 0, CFGF_NONE),
		CFG_FLOAT("float", 0.0, CFGF_NONE),
		CFG_END()
	};

	cfg_opt_t opts[] = {
		CFG_BOOL_LIST("bool", cfg_false, CFGF_NONE),
		CFG_STR_LIST("string", NULL, CFGF_NONE),
		CFG_INT_LIST("int", 0, CFGF_NONE),
		CFG_FLOAT_LIST("float", "0.0", CFGF_NONE),
		CFG_SEC("sub", sub_opts,
			CFGF_MULTI | CFGF_TITLE | CFGF_NO_TITLE_DUPES),
		CFG_END()
	};

	char *cmd = NULL;
	const char *reply;
	int res;
	int i;

	cfg = cfg_init(opts, CFGF_NONE);

	for (;;) {
		printf("cli> ");
		fflush(stdout);

		if (cmd)
			free(cmd);
		cmd = input_cmd();
		if (!cmd)
			exit(0);
		res = split_cmd(cmd);
		if (res < 0) {
			printf("Parse error\n");
			continue;
		}
		if (cmdc == 0)
			continue;
		for (i = 0; cmds[i].cmd; ++i) {
			if (strcmp(cmdv[0], cmds[i].cmd))
				continue;
			reply = cmds[i].handler(cmdc, cmdv);
			if (!reply)
				exit(0);
			printf("%s", reply);
			break;
		}
		if (!cmds[i].cmd)
			printf("Unknown command\n");
	}

	cfg_free(cfg);
	return 0;
}

bool readConfig(cfg_t **cfg) {
	// All the const_cast keywords is to remove the compiler warnings generated by the C++-compiler.
	cfg_opt_t controller_opts[] = {
		CFG_INT(const_cast<char *>("id"), -1, CFGF_NONE),
		CFG_STR(const_cast<char *>("name"), const_cast<char *>(""), CFGF_NONE),
		CFG_INT(const_cast<char *>("type"), 0, CFGF_NONE),
		CFG_STR(const_cast<char *>("serial"), const_cast<char *>(""), CFGF_NONE),

		CFG_END()
	};

	cfg_opt_t device_parameter_opts[] = {
		// Groups
		CFG_STR(const_cast<char *>("devices"), 0, CFGF_NONE),

		CFG_STR(const_cast<char *>("house"), 0, CFGF_NONE),
		CFG_STR(const_cast<char *>("unit"), 0, CFGF_NONE),
		CFG_STR(const_cast<char *>("code"), 0, CFGF_NONE),
		CFG_STR(const_cast<char *>("system"), 0, CFGF_NONE),
		CFG_STR(const_cast<char *>("units"), 0, CFGF_NONE),
		CFG_STR(const_cast<char *>("fade"), 0, CFGF_NONE),

		CFG_END()
	};

	cfg_opt_t device_opts[] = {
		CFG_INT(const_cast<char *>("id"), -1, CFGF_NONE),
		CFG_STR(const_cast<char *>("name"), const_cast<char *>("Unnamed"), CFGF_NONE),
		CFG_INT(const_cast<char *>("controller"), 0, CFGF_NONE),
		CFG_STR(const_cast<char *>("protocol"), const_cast<char *>("arctech"), CFGF_NONE),
		CFG_STR(const_cast<char *>("model"), const_cast<char *>(""), CFGF_NONE),
		CFG_SEC(const_cast<char *>("parameters"), device_parameter_opts, CFGF_NONE),
		CFG_END()
	};

	cfg_opt_t opts[] = {
		CFG_STR(const_cast<char *>("user"), const_cast<char *>("nobody"), CFGF_NONE),
		CFG_STR(const_cast<char *>("group"), const_cast<char *>("plugdev"), CFGF_NONE),
		CFG_STR(const_cast<char *>("deviceNode"), const_cast<char *>("/dev/tellstick"), CFGF_NONE),
		CFG_STR(const_cast<char *>("ignoreControllerConfirmation"), const_cast<char *>("false"), CFGF_NONE),
		CFG_SEC(const_cast<char *>("device"), device_opts, CFGF_MULTI),
		CFG_SEC(const_cast<char *>("controller"), controller_opts, CFGF_MULTI),
		CFG_END()
	};

	FILE *fp = fopen(CONFIG_FILE, "re");  // e for setting O_CLOEXEC on the file handle
	if (!fp) {
		return false;
	}
	(*cfg) = cfg_init(opts, CFGF_NOCASE);
	if (cfg_parse_fp((*cfg), fp) == CFG_PARSE_ERROR) {
		(*cfg) = 0;
		fclose(fp);
		return false;
	}

	fclose(fp);
	return true;
}

void validate_setup(void)
{
	cfg_opt_t *opt = 0;

	static cfg_opt_t action_opts[] = {
		CFG_INT("speed", 0, CFGF_NONE),
		CFG_STR("name", 0, CFGF_NONE),
		CFG_INT("xspeed", 0, CFGF_NONE),
		CFG_END()
	};

	static cfg_opt_t multi_opts[] = {
		CFG_INT_LIST("speeds", 0, CFGF_NONE),
		CFG_SEC("options", action_opts, CFGF_NONE),
		CFG_END()
	};

	cfg_opt_t opts[] = {
		CFG_STR_LIST("ip-address", 0, CFGF_NONE),
		CFG_INT_CB("action", ACTION_NONE, CFGF_NONE, parse_action),
		CFG_SEC("options", action_opts, CFGF_NONE),
		CFG_SEC("multi_options", multi_opts, CFGF_MULTI),
		CFG_END()
	};

	cfg = cfg_init(opts, 0);

	cfg_set_validate_func(cfg, "ip-address", validate_ip);
	fail_unless(cfg_set_validate_func(cfg, "ip-address", validate_ip) == validate_ip);
	opt = cfg_getopt(cfg, "ip-address");
	fail_unless(opt != 0);
	fail_unless(opt->validcb == validate_ip);

	cfg_set_validate_func(cfg, "options", validate_action);
	fail_unless(cfg_set_validate_func(cfg, "options", validate_action) == validate_action);
	opt = cfg_getopt(cfg, "options");
	fail_unless(opt != 0);
	fail_unless(opt->validcb == validate_action);

	cfg_set_validate_func(cfg, "options|speed", validate_speed);
	fail_unless(cfg_set_validate_func(cfg, "options|speed", validate_speed) == validate_speed);
	opt = cfg_getopt(cfg, "options|speed");
	fail_unless(opt != 0);
	fail_unless(opt->validcb == validate_speed);

	cfg_set_validate_func(cfg, "multi_options|speeds", validate_speed);
	fail_unless(cfg_set_validate_func(cfg, "multi_options|speeds", validate_speed) == validate_speed);

	cfg_set_validate_func(cfg, "multi_options|options|xspeed", validate_speed);
	fail_unless(cfg_set_validate_func(cfg, "multi_options|options|xspeed", validate_speed) == validate_speed);

	/* Validate callbacks for *set*() functions, i.e. not when parsing file content */
	cfg_set_validate_func2(cfg, "multi_options|speed", validate_speed2);
	cfg_set_validate_func2(cfg, "multi_options|options|name", validate_name2);
}

static cfg_t *create_config(void)
{
	static cfg_opt_t sec_opts[] = {
		CFG_INT("a", 1, CFGF_NONE),
		CFG_INT("b", 2, CFGF_NONE),
		CFG_END()
	};

	cfg_opt_t opts[] = {
		CFG_SEC("sec", sec_opts, CFGF_MULTI | CFGF_TITLE),
		CFG_END()
	};

	return cfg_init(opts, 0);
}

int main(void)
{
	char *comment;
	char *expect = "Now, is it this comment that goes with the option?";
	cfg_t *cfg;
	cfg_opt_t *opt;
	cfg_opt_t section_opts[] = {
		CFG_INT("key", 0, CFGF_NONE),
		CFG_BOOL("bool", 0, CFGF_NONE),
		CFG_STR("option", NULL, CFGF_NONE),
		CFG_END()
	};
	cfg_opt_t opts[] = {
		CFG_STR("option", NULL, CFGF_NONE),
		CFG_SEC("section", section_opts, CFGF_MULTI),
		CFG_END()
	};

	cfg = cfg_init(opts, CFGF_COMMENTS);
	fail_unless(cfg != NULL);

	fail_unless(cfg_parse(cfg, SRC_DIR "/annotate.conf") == CFG_SUCCESS);

	/* Verify the parser read the correct comment for this tricky option */
	opt = cfg_getopt(cfg, "section|option");
	fail_unless(opt != NULL);
	comment = cfg_opt_getcomment(opt);
	fail_unless(comment != NULL);
	fail_unless(strcmp(comment, expect) == 0);

	expect = "But what's the worst poetry in the universe?";
	fail_unless(cfg_opt_setcomment(opt, expect) == CFG_SUCCESS);

	cfg_opt_setnstr(opt, "Paula Nancy Millstone Jennings was a poet who wrote the worst poetry in "
			"the universe. In fact, her poetry is still considered to be the worst in "
			"the Galaxy, closely followed by that of the Azgoths of Kria and the "
			"Vogons, in that order.", 0);

	/* Verify that the comment is not reset when changing option value */
	comment = cfg_opt_getcomment(opt);
	fail_unless(comment != NULL);
	fail_unless(strcmp(comment, expect) == 0);

	cfg_print(cfg, stdout);
	fail_unless(cfg_free(cfg) == CFG_SUCCESS);

	return 0;
}

cfg_opt_t * build_section(section_t *section, section_ptrs &ptrs)
{
   static const char *funcname = "conf::build_section";

   cfg_opt_t *ptr = new cfg_opt_t[section->size() + 1];
   ptrs.push_back(std::unique_ptr<cfg_opt_t []>(ptr));

   for (auto &entry : *section)
   {
      char *name = const_cast<char *>(entry.first.c_str());

      switch (entry.second.what_type())
      {
         case val_type::integer:     *ptr = CFG_INT(name, 0, CFGF_NODEFAULT); break;
         case val_type::string:      *ptr = CFG_STR(name, 0, CFGF_NODEFAULT); break;
         case val_type::multistring: *ptr = CFG_STR_LIST(name, 0, CFGF_NODEFAULT); break;
         case val_type::section:     *ptr = CFG_SEC(name, build_section(entry.second.get<conf::section_t *>(), ptrs), CFGF_NONE); break;

         case val_type::unknown:
            throw logging::error(funcname, "Val with unknown type in section: %s", name);
      }
      ptr++;
   }

   *ptr = CFG_END();
   return ptrs.back().get();
}

BOOL saveConfFile(user_input_data *user_dat)
{
    FILE *U2Mconf_file = fopen(cfg_filename, "w");

    if (!U2Mconf_file) return FALSE;

    cfg_opt_t email_opts[] = {
        CFG_STR("From", user_dat->FROM, CFGF_NONE),
        CFG_STR("To", user_dat->TO, CFGF_NONE),
        CFG_STR("Cc", user_dat->CC, CFGF_NONE),
        CFG_STR("Subject", user_dat->SUBJECT, CFGF_NONE),
        CFG_STR("Body", user_dat->BODY, CFGF_NONE),
        CFG_STR("Password", user_dat->pass, CFGF_NONE),
        CFG_STR("SMTP_server", user_dat->SMTP_SERVER, CFGF_NONE),
        CFG_INT("Port_number", (int)user_dat->PORT, CFGF_NONE),
        CFG_END()
    };

    cfg_t *U2MConf = cfg_init(email_opts, CFGF_NONE);
    cfg_print(U2MConf, U2Mconf_file);

    fclose(U2Mconf_file);
    cfg_free(U2MConf);

    return TRUE;
}

/*
Function to parse the server config file.
@param Config file location in the file system.
@param Struct to write results into.
@return -1 on failure, 0 on success.
*/
int parse_config(char * config_file, struct config_struct * running_config)
{
  print_to_log("Parsing config file", LOG_INFO);
  cfg_opt_t opts[] =
	{
	  CFG_STR("domain", "", CFGF_NONE),
    CFG_INT("connection_timeout_in_seconds", 0, CFGF_NONE),
    CFG_INT("max_connections", 0, CFGF_NONE),
	  CFG_END()
	};
	cfg_t *cfg;
	cfg = cfg_init(opts, CFGF_NONE);
	 if(cfg_parse(cfg, config_file) == CFG_PARSE_ERROR)
   {
     printf("Reading config %s has failed\n", config_file);
     return -1;
   }
   if (strcmp(cfg_getstr(cfg, "domain"),"")!=0)
   {
     //Load domain into struct here.
   }
   if (cfg_getint(cfg, "connection_timeout_in_seconds")<=60)
   {
     //load connection_timeout_in_seconds into struct here.
     running_config->connection_timeout_in_seconds = cfg_getint(cfg, "connection_timeout_in_seconds");
   }
   if (cfg_getint(cfg, "max_connections")<=1000)
   {
     //load connection_timeout_in_seconds into struct here.
     running_config->max_connections = cfg_getint(cfg, "max_connections");
   }
   return 0;
}

/**
 * Parses the config file
 *
 * @return a pointer to the configuration data structure, NULL on failure
 */
static cfg_t * parse_config(void) {
	cfg_t * cfg = NULL;

	cfg_opt_t target_opts[] = {
	                              CFG_STR("comment", 0, CFGF_NONE),
	                              CFG_INT("strip", 0, CFGF_NONE),
	                              CFG_STR("rewrite_prefix", 0, CFGF_NONE),
	                              CFG_FLOAT("prob", 0, CFGF_NONE),
	                              CFG_INT("hash_index", 0, CFGF_NONE),
	                              CFG_STR("rewrite_suffix", 0, CFGF_NONE),
	                              CFG_INT("status", 1, CFGF_NONE),
	                              CFG_INT_LIST("backed_up", NULL, CFGF_NONE),
	                              CFG_INT("backup", -1, CFGF_NONE),
	                              CFG_END()
	                          };

	cfg_opt_t prefix_opts[] = {
	                              CFG_SEC("target", target_opts, CFGF_MULTI | CFGF_TITLE),
	                              CFG_INT("max_targets", -1, CFGF_NONE),
	                              CFG_END()
	                          };

	cfg_opt_t domain_opts[] = {
	                              CFG_SEC("prefix", prefix_opts, CFGF_MULTI | CFGF_TITLE),
	                              CFG_END()
	                          };

	cfg_opt_t opts[] = {
	                       CFG_SEC("domain", domain_opts, CFGF_MULTI | CFGF_TITLE),
	                       CFG_END()
	                   };

	cfg = cfg_init(opts, CFGF_NONE);

	cfg_set_error_function(cfg, conf_error);

	switch (cfg_parse(cfg, config_file)) {
		case CFG_FILE_ERROR: LM_ERR("file not found: %s\n", config_file);
			return NULL;
		case CFG_PARSE_ERROR: LM_ERR("error while parsing %s in line %i, section %s\n",
			                          cfg->filename, cfg->line, cfg->name);
			return NULL;
		case CFG_SUCCESS: break;
	}
	return cfg;
}