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

#include <platon/str/strconv.h>

	char *
PLATON_FUNC(strconv)(str, charset_from, charset_to)
	char *str;
	char *charset_from;
	char *charset_to;
{
	register int i;
	register char *c;

	if (str == NULL || charset_from == NULL || charset_to == NULL)
		return NULL;

	for (i = 0; str[i] != '\0'; i++)
		if ((c = strchr(charset_from, str[i])) != NULL)
			str[i] = charset_to[(int) (c - charset_from)];

	return str;
}