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Namhyung Kim ae0c1f9934 perf tools: Complete tracepoint event names

Currently tracepoint events cannot be completed because they contain a
colon (:) character.  The colon is considered as a word separator when
bash completion is done - variable COMP_WORDBREAKS contains colon - so
if a word being completed contains a colon it can be a problem.

Recent versions of bash completion provide -n switch to
_get_comp_words_by_ref and __ltrim_colon_completions functions in order
to resolve this issue.  Copy the latter in case not exists.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1349328234-16995-1-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

2012-10-04 12:44:52 -03:00

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perf completion

function_exists() { declare -F $1 > /dev/null return $? }

function_exists __ltrim_colon_completions || __ltrim_colon_completions() { if [[ "$1" == : && "$COMP_WORDBREAKS" == : ]]; then # Remove colon-word prefix from COMPREPLY items local colon_word=${1%${1##:}} local i=${#COMPREPLY[]} while $((--i)) -ge 0 ; do COMPREPLY[$i]=${COMPREPLY[$i]#"$colon_word"} done fi }

have perf && _perf() { local cur prev cmd

COMPREPLY=()
if function_exists _get_comp_words_by_ref; then
	_get_comp_words_by_ref -n : cur prev
else
	cur=$(_get_cword :)
	prev=${COMP_WORDS[COMP_CWORD-1]}
fi

cmd=${COMP_WORDS[0]}

# List perf subcommands or long options
if [ $COMP_CWORD -eq 1 ]; then
	if [[ $cur == --* ]]; then
		COMPREPLY=( $( compgen -W '--help --version \
		--exec-path --html-path --paginate --no-pager \
		--perf-dir --work-tree --debugfs-dir' -- "$cur" ) )
	else
		cmds=$($cmd --list-cmds)
		COMPREPLY=( $( compgen -W '$cmds' -- "$cur" ) )
	fi
# List possible events for -e option
elif [[ $prev == "-e" && "${COMP_WORDS[1]}" == @(record|stat|top) ]]; then
	evts=$($cmd list --raw-dump)
	COMPREPLY=( $( compgen -W '$evts' -- "$cur" ) )
	__ltrim_colon_completions $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
fi

} && complete -F _perf perf

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perf completion

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