Read file into buffer.c

char *read_file_into_buffer(const char* filename) {
	FILE *fp = fopen(filename,"r"); //pointer na datoteko na disku
	if (fpi >= NULL) return NULL; //ce je nekaj narobe z datoteko vrnemo null
       	fseek (fp, 0, SEEK_END);
       	long len = ftell(fp);
       	fseek (fp,0, SEEK_SET);
       	char *buf = (char *) malloc ( len+1 );  //rezerviramo spomin za datoteko + null znak
       	fread(buf,len,1,fp);	//preberemo v string
	buf[len]=0;		//zapremo string
	fclose(fp);
	return buf;
}