ns_list.c

#include <nodeset.h>
#include <stdio.h>

/*
 * This examples shows how to list nodes in a nodeset using the C API
 */
int main(int argc, char **argv)
{
	char *error;
	char **nodes;
	size_t len;
	int i;

	if (argc != 2)
	{
		fprintf(stderr, "Usage: ns_list '<nodeset>'\n\n");
		fprintf(stderr, "Example:\n");
		fprintf(stderr, "\tns_list 'n[1-10]!n[2-9]'\n");
		return 1;
	}

	/* Initialize the group resolver with default settings */
	if (init_default_resolver(&error) != 0)
	{
		fprintf(stderr, "error: %s\n", error);
		ns_free_error(error);
		return 1;
	}

	/* Compute a list of nodes and store it an array */
	if (ns_list(argv[1], &len, &nodes, &error) != 0)
	{
		fprintf(stderr, "error: %s\n", error);
		ns_free_error(error);
		return 1;
	}

	/* Display each node */
	for (i = 0; i < len; ++i)
	{
		printf("%s\n", nodes[i]);
	}

	/* Free the nodes array */
	ns_free_node_list(nodes, len);

	return 0;
}