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perf tools: Long option completion support for each subcommands 

Add internal --list-opts option to print all of long option names to
stdout so that it can be used for bash completion engine.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1349191294-6926-4-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2012-10-03 00:21:34 +09:00 committed by Arnaldo Carvalho de Melo
parent 35c2fde115
commit 4d8061faca
3 changed files with 16 additions and 2 deletions
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9
tools/perf/bash_completion
View File

@ -33,8 +33,13 @@ _perf()
fi
# List possible events for -e option
elif [[ $prev == "-e" && "${COMP_WORDS[1]}" == @(record|stat|top) ]]; then
cmds=$($cmd list --raw-dump)
COMPREPLY=( $( compgen -W '$cmds' -- "$cur" ) )
evts=$($cmd list --raw-dump)
COMPREPLY=( $( compgen -W '$evts' -- "$cur" ) )
# List long option names
elif [[ $cur == --* ]]; then
subcmd=${COMP_WORDS[1]}
opts=$($cmd $subcmd --list-opts)
COMPREPLY=( $( compgen -W '$opts' -- "$cur" ) )
# Fall down to list regular files
else
_filedir

8
tools/perf/util/parse-options.c
View File

@ -384,6 +384,8 @@ int parse_options_step(struct parse_opt_ctx_t *ctx,
return usage_with_options_internal(usagestr, options, 1);
if (internal_help && !strcmp(arg + 2, "help"))
return parse_options_usage(usagestr, options);
if (!strcmp(arg + 2, "list-opts"))
return PARSE_OPT_LIST;
switch (parse_long_opt(ctx, arg + 2, options)) {
case -1:
return parse_options_usage(usagestr, options);
@ -422,6 +424,12 @@ int parse_options(int argc, const char **argv, const struct option *options,
exit(129);
case PARSE_OPT_DONE:
break;
case PARSE_OPT_LIST:
while (options->type != OPTION_END) {
printf("--%s ", options->long_name);
options++;
}
exit(130);
default: /* PARSE_OPT_UNKNOWN */
if (ctx.argv[0][1] == '-') {
error("unknown option `%s'", ctx.argv[0] + 2);

1
tools/perf/util/parse-options.h
View File

@ -140,6 +140,7 @@ extern NORETURN void usage_with_options(const char * const *usagestr,
enum {
PARSE_OPT_HELP = -1,
PARSE_OPT_DONE,
PARSE_OPT_LIST,
PARSE_OPT_UNKNOWN,
};