application/controller/randval/read.c File Reference

#include <sys/types.h>
#include <stdio.h>
#include "application/application.h"
#include "session.h"
#include "hash.h"
#include "utils/memory.h"

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Macros
#define	_GNU_SOURCE
#define	RANDVAL_JSON   "{\"ctime\":%ld,\"vnext\":%ld,\"value\":\"%02d\"}"

Functions
char *	controllerRandvalRead (Application app, Session sess, Hash args)

Detailed Description

Author

Georg Hopp

Copyright

Copyright © 2013 Georg Hopp

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

Definition in file application/controller/randval/read.c.

Macro Definition Documentation

#define _GNU_SOURCE

Definition at line 23 of file application/controller/randval/read.c.

#define RANDVAL_JSON   "{\"ctime\":%ld,\"vnext\":%ld,\"value\":\"%02d\"}"

Definition at line 34 of file application/controller/randval/read.c.

Referenced by controllerRandvalRead().

Function Documentation

char* controllerRandvalRead	(	Application	app,
		Session	sess,
		Hash	args
	)

Definition at line 37 of file application/controller/randval/read.c.

References memMalloc(), and RANDVAL_JSON.

{
    char   * buffer;
    size_t   nbuffer;
    time_t   remaining;

    remaining = 10 - (time(NULL) - app->val->timestamp);

    nbuffer = snprintf(
            NULL,
            0,
            RANDVAL_JSON,
            app->val->timestamp,
            remaining,
            app->val->value);
    buffer  = memMalloc(nbuffer);
    sprintf(
            buffer,
            RANDVAL_JSON,
            app->val->timestamp,
            remaining,
            app->val->value);

    return buffer;
}

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