text: // SPDX-License-Identifier: GPL-2.0
  #include <linux/compiler.h>
  #include <stdio.h>
  #include <string.h>
  #include "builtin.h"
  #include "perf.h"
  #include "debug.h"
  #include <subcmd/parse-options.h>
  #include "data-convert.h"
  
  typedef int (*data_cmd_fn_t)(int argc, const char **argv);
  
  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 char * const data_subcommands[] = { "convert", NULL };
  
  static const char *data_usage[] = {
  	"perf data convert [<options>]",
  	NULL
  };
  
  const char *to_json;
  const char *to_ctf;
  struct perf_data_convert_opts opts = {
  	.force = false,
  	.all = false,
  };
  
  const struct option data_options[] = {
  		OPT_INCR('v', "verbose", &verbose, "be more verbose"),
  		OPT_STRING('i', "input", &input_name, "file", "input file name"),
  		OPT_STRING(0, "to-json", &to_json, NULL, "Convert to JSON format"),
  #ifdef HAVE_LIBBABELTRACE_SUPPORT
  		OPT_STRING(0, "to-ctf", &to_ctf, NULL, "Convert to CTF format"),
  		OPT_BOOLEAN(0, "tod", &opts.tod, "Convert time to wall clock time"),
  #endif
  		OPT_BOOLEAN('f', "force", &opts.force, "don't complain, do it"),
  		OPT_BOOLEAN(0, "all", &opts.all, "Convert all events"),
  		OPT_END()
  	};
  
  static int cmd_data_convert(int argc, const char **argv)
  {
  
  	argc = parse_options(argc, argv, data_options,
  			     data_usage, 0);
  	if (argc) {
  		usage_with_options(data_usage, data_options);
  		return -1;
  	}
  
  	if (to_json && to_ctf) {
  		pr_err("You cannot specify both --to-ctf and --to-json.\n");
  		return -1;
  	}
  	if (!to_json && !to_ctf) {
  		pr_err("You must specify one of --to-ctf or --to-json.\n");
  		return -1;
  	}
  
  	if (to_json)
  		return bt_convert__perf2json(input_name, to_json, &opts);
  
  	if (to_ctf) {
  #ifdef HAVE_LIBBABELTRACE_SUPPORT
  		return bt_convert__perf2ctf(input_name, to_ctf, &opts);
  #else
  		pr_err("The libbabeltrace support is not compiled in. perf should be "
  		       "compiled with environment variables LIBBABELTRACE=1 and "
  		       "LIBBABELTRACE_DIR=/path/to/libbabeltrace/\n");
  		return -1;
  #endif
  	}
  
  	return 0;
  }
  
  static struct data_cmd data_cmds[] = {
  	{ "convert", "converts data file between formats", cmd_data_convert },
  	{ .name = NULL, },
  };
  
  int cmd_data(int argc, const char **argv)
  {
  	struct data_cmd *cmd;
  	const char *cmdstr;
  
  	argc = parse_options_subcommand(argc, argv, data_options, data_subcommands, data_usage,
  			     PARSE_OPT_STOP_AT_NON_OPTION);
  
  	if (!argc) {
  		usage_with_options(data_usage, data_options);
  		return -1;
  	}
  
  	cmdstr = argv[0];
  
  	for_each_cmd(cmd) {
  		if (strcmp(cmd->name, cmdstr))
  			continue;
  
  		return cmd->fn(argc, argv);
  	}
  
  	pr_err("Unknown command: %s\n", cmdstr);
  	usage_with_options(data_usage, data_options);
  	return -1;
  }
  