floathelper.c

/**
 * @file
 *
 * @brief
 *
 * @copyright BSD License (see LICENSE.md or https://www.libelektra.org)
 */

#include <kdbhelper.h>
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "floathelper.h"

char * elektraFtoA (char * buffer, ssize_t bufSize, double val)
{
	if (buffer == NULL)
	{
		bufSize = MAX_CHARS_DOUBLE;
		buffer = elektraMalloc (bufSize);
	}
	snprintf (buffer, bufSize, "%g", val);

	struct lconv * locale;
	locale = localeconv ();
	char sysSep = (locale->decimal_point)[0];

	if (sysSep == ELEKTRA_DEFAULT_DECIMAL_POINT)
	{
		return buffer;
	}
	else
	{
		char * sepPtr = strchr (buffer, sysSep);
		if (sepPtr == NULL)
		{
			return buffer;
		}
		else
		{
			*sepPtr = ELEKTRA_DEFAULT_DECIMAL_POINT;
			return buffer;
		}
	}
}

double elektraEFtoF (const char * string)
{
	char * buffer = elektraMalloc (elektraStrLen (string));
	strcpy (buffer, string);
	char * sepPtr = strchr (buffer, ELEKTRA_DEFAULT_DECIMAL_POINT);
	if (sepPtr == NULL)
	{
		elektraFree (buffer);
		return atof (string);
	}
	else
	{
		struct lconv * locale;
		locale = localeconv ();
		char sysSep = (locale->decimal_point)[0];
		*sepPtr = sysSep;
		double retval = atof (buffer);
		elektraFree (buffer);
		return retval;
	}
}