compile-fc-batt: allow possible third field in source lines Battery tables maintained in the fc-battery-conf repository will now have a third field added, defining thresholds for the battery bars icon, and there will be a new utility to compile them into the new /etc/batterytab2 file read by the FC Tourmaline version of our FCHG driver. For backward compatibility with the original Magnetite version of FCHG, compile-fc-batt remains the tool for compiling the original /etc/batterytab file format, and it needs to ignore the newly added third field in battery table sources.

/*
 * Both arguments to fc-cal2text must name directories that already exist.
 * Here we implement the check for this requirement.
 */

#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

check_directory_exists(pathname)
	char *pathname;
{
	struct stat st;

	if (stat(pathname, &st) < 0) {
		perror(pathname);
		exit(1);
	}
	if (!S_ISDIR(st.st_mode)) {
		fprintf(stderr, "error: %s is not a directory\n", pathname);
		exit(1);
	}
	return(0);
}