/*reads a config file with the following format:

name1=setting1
name2=setting2

example:

	relay  = FALSE
debug = 1
mods=12345;98765;13456

returns a pointer to a struct wich needs to be freed later on
should be portable on pretty much every platform where there is a C compiler with malloc() and enough RAM, this is not optimized for ICs
constants and struct defined in header

implement comments later
*/

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include"read_cfg.h"
options *read_cfg(char filename[]) {
	FILE *fpointer;
	char str[LINEBUFF];
	char line[LINEBUFF];
	int i=0;
	int ib=0;
	int il=0;
	options *option;
	option = malloc(MAXLINE*sizeof(*option)); //160 KB HEAP needs to be freed later in main.c
	if ((fpointer = fopen(filename,"r")) == NULL){
		printf("Error opening file");
		return 0;
		}
	while( fgets (str, LINEBUFF, fpointer)!=NULL || il<=MAXLINE ) {
		while (i<LINEBUFF){
			if(str[i]!=' ' && str[i]!='\n' && str[i]!='\r'){line[ib]=str[i];i++;ib++;}
			
			
			else{i++;}
			}
		if (line[0]!='\0'){
			i=0;ib=0;
			strcpy(option[il].name,strtok(line, "="));
			strcpy(option[il].setting,strtok(NULL, "="));
			}
		else{}
		il++;
		}
	fclose(fpointer);
	return option;
}