Introduce
$ perf kvm --list-cmds
to dump a raw list of commands for use by the completion script. In
order to do this, introduce parse_options_subcommand() for handling
subcommands as a special case in the parse-options machinery.
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Acked-by: David Ahern <dsahern@gmail.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Link: http://lkml.kernel.org/r/1393896396-10427-1-git-send-email-artagnon@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-
- const char * const kvm_usage[] = {
- "perf kvm [<options>] {top|record|report|diff|buildid-list|stat}",
- NULL
- };
+ const char *const kvm_subcommands[] = { "top", "record", "report", "diff",
+ "buildid-list", "stat", NULL };
+ const char *kvm_usage[] = { NULL, NULL };
perf_host = 0;
perf_guest = 1;
perf_host = 0;
perf_guest = 1;
- argc = parse_options(argc, argv, kvm_options, kvm_usage,
- PARSE_OPT_STOP_AT_NON_OPTION);
+ argc = parse_options_subcommand(argc, argv, kvm_options, kvm_subcommands, kvm_usage,
+ PARSE_OPT_STOP_AT_NON_OPTION);
if (!argc)
usage_with_options(kvm_usage, kvm_options);
if (!argc)
usage_with_options(kvm_usage, kvm_options);
__perfcomp_colon "$evts" "$cur"
# List subcommands for 'perf kvm'
elif [[ $prev == "kvm" ]]; then
__perfcomp_colon "$evts" "$cur"
# List subcommands for 'perf kvm'
elif [[ $prev == "kvm" ]]; then
- subcmds="top record report diff buildid-list stat"
+ subcmds=$($cmd $prev --list-cmds)
__perfcomp_colon "$subcmds" "$cur"
# List long option names
elif [[ $cur == --* ]]; then
__perfcomp_colon "$subcmds" "$cur"
# List long option names
elif [[ $cur == --* ]]; then
if (internal_help && !strcmp(arg + 2, "help"))
return usage_with_options_internal(usagestr, options, 0);
if (!strcmp(arg + 2, "list-opts"))
if (internal_help && !strcmp(arg + 2, "help"))
return usage_with_options_internal(usagestr, options, 0);
if (!strcmp(arg + 2, "list-opts"))
+ return PARSE_OPT_LIST_OPTS;
+ if (!strcmp(arg + 2, "list-cmds"))
+ return PARSE_OPT_LIST_SUBCMDS;
switch (parse_long_opt(ctx, arg + 2, options)) {
case -1:
return parse_options_usage(usagestr, options, arg + 2, 0);
switch (parse_long_opt(ctx, arg + 2, options)) {
case -1:
return parse_options_usage(usagestr, options, arg + 2, 0);
return ctx->cpidx + ctx->argc;
}
return ctx->cpidx + ctx->argc;
}
-int parse_options(int argc, const char **argv, const struct option *options,
- const char * const usagestr[], int flags)
+int parse_options_subcommand(int argc, const char **argv, const struct option *options,
+ const char *const subcommands[], const char *usagestr[], int flags)
{
struct parse_opt_ctx_t ctx;
perf_header__set_cmdline(argc, argv);
{
struct parse_opt_ctx_t ctx;
perf_header__set_cmdline(argc, argv);
+ /* build usage string if it's not provided */
+ if (subcommands && !usagestr[0]) {
+ struct strbuf buf = STRBUF_INIT;
+
+ strbuf_addf(&buf, "perf %s [<options>] {", argv[0]);
+ for (int i = 0; subcommands[i]; i++) {
+ if (i)
+ strbuf_addstr(&buf, "|");
+ strbuf_addstr(&buf, subcommands[i]);
+ }
+ strbuf_addstr(&buf, "}");
+
+ usagestr[0] = strdup(buf.buf);
+ strbuf_release(&buf);
+ }
+
parse_options_start(&ctx, argc, argv, flags);
switch (parse_options_step(&ctx, options, usagestr)) {
case PARSE_OPT_HELP:
exit(129);
case PARSE_OPT_DONE:
break;
parse_options_start(&ctx, argc, argv, flags);
switch (parse_options_step(&ctx, options, usagestr)) {
case PARSE_OPT_HELP:
exit(129);
case PARSE_OPT_DONE:
break;
+ case PARSE_OPT_LIST_OPTS:
while (options->type != OPTION_END) {
printf("--%s ", options->long_name);
options++;
}
exit(130);
while (options->type != OPTION_END) {
printf("--%s ", options->long_name);
options++;
}
exit(130);
+ case PARSE_OPT_LIST_SUBCMDS:
+ for (int i = 0; subcommands[i]; i++)
+ printf("%s ", subcommands[i]);
+ exit(130);
default: /* PARSE_OPT_UNKNOWN */
if (ctx.argv[0][1] == '-') {
error("unknown option `%s'", ctx.argv[0] + 2);
default: /* PARSE_OPT_UNKNOWN */
if (ctx.argv[0][1] == '-') {
error("unknown option `%s'", ctx.argv[0] + 2);
return parse_options_end(&ctx);
}
return parse_options_end(&ctx);
}
+int parse_options(int argc, const char **argv, const struct option *options,
+ const char * const usagestr[], int flags)
+{
+ return parse_options_subcommand(argc, argv, options, NULL,
+ (const char **) usagestr, flags);
+}
+
#define USAGE_OPTS_WIDTH 24
#define USAGE_GAP 2
#define USAGE_OPTS_WIDTH 24
#define USAGE_GAP 2
const struct option *options,
const char * const usagestr[], int flags);
const struct option *options,
const char * const usagestr[], int flags);
+extern int parse_options_subcommand(int argc, const char **argv,
+ const struct option *options,
+ const char *const subcommands[],
+ const char *usagestr[], int flags);
+
extern NORETURN void usage_with_options(const char * const *usagestr,
const struct option *options);
extern NORETURN void usage_with_options(const char * const *usagestr,
const struct option *options);
enum {
PARSE_OPT_HELP = -1,
PARSE_OPT_DONE,
enum {
PARSE_OPT_HELP = -1,
PARSE_OPT_DONE,
+ PARSE_OPT_LIST_OPTS,
+ PARSE_OPT_LIST_SUBCMDS,