linux-stable/tools/perf/builtin-data.c

#include <linux/compiler.h>
#include "builtin.h"
#include "perf.h"
#include "debug.h"
#include "parse-options.h"

typedef int (*data_cmd_fn_t)(int argc, const char **argv, const char *prefix);

struct data_cmd {
	const char	*name;
	const char	*summary;
	data_cmd_fn_t	fn;
};

static struct data_cmd data_cmds[];

#define for_each_cmd(cmd) \
	for (cmd = data_cmds; cmd && cmd->name; cmd++)

static const struct option data_options[] = {
	OPT_END()
};

static const char * const data_usage[] = {
	"perf data [<common options>] <command> [<options>]",
	NULL
};

static void print_usage(void)
{
	struct data_cmd *cmd;

	printf("Usage:\n");
	printf("\t%s\n\n", data_usage[0]);
	printf("\tAvailable commands:\n");

	for_each_cmd(cmd) {
		printf("\t %s\t- %s\n", cmd->name, cmd->summary);
	}

	printf("\n");
}

static struct data_cmd data_cmds[] = {
	{ NULL },
};

int cmd_data(int argc, const char **argv, const char *prefix)
{
	struct data_cmd *cmd;
	const char *cmdstr;

	/* No command specified. */
	if (argc < 2)
		goto usage;

	argc = parse_options(argc, argv, data_options, data_usage,
			     PARSE_OPT_STOP_AT_NON_OPTION);
	if (argc < 1)
		goto usage;

	cmdstr = argv[0];

	for_each_cmd(cmd) {
		if (strcmp(cmd->name, cmdstr))
			continue;

		return cmd->fn(argc, argv, prefix);
	}

	pr_err("Unknown command: %s\n", cmdstr);
usage:
	print_usage();
	return -1;
}