perf completion: Introduce zsh support

__perfcomp(), __perfcomp_colon(), and _perf() have to be overridden.
Inspired by the way the git.git completion system is structured.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/1384704807-15779-5-git-send-email-artagnon@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/bash_completion b/tools/perf/bash_completion
index 573599b..4949488 100644 (file)
--- a/tools/perf/bash_completion
+++ b/tools/perf/bash_completion
@@ -1,4 +1,4 @@
-# perf completion
+# perf bash and zsh completion
 
 # Taken from git.git's completion script.
 __my_reassemble_comp_words_by_ref()
@@ -129,6 +129,67 @@ __perf_main ()
        fi
 }
 
+if [[ -n ${ZSH_VERSION-} ]]; then
+       autoload -U +X compinit && compinit
+
+       __perfcomp ()
+       {
+               emulate -L zsh
+
+               local c IFS=$' \t\n'
+               local -a array
+
+               for c in ${=1}; do
+                       case $c in
+                       --*=*|*.) ;;
+                       *) c="$c " ;;
+                       esac
+                       array[${#array[@]}+1]="$c"
+               done
+
+               compset -P '*[=:]'
+               compadd -Q -S '' -a -- array && _ret=0
+       }
+
+       __perfcomp_colon ()
+       {
+               emulate -L zsh
+
+               local cur_="${2-$cur}"
+               local c IFS=$' \t\n'
+               local -a array
+
+               if [[ "$cur_" == *:* ]]; then
+                       local colon_word=${cur_%"${cur_##*:}"}
+               fi
+
+               for c in ${=1}; do
+                       case $c in
+                       --*=*|*.) ;;
+                       *) c="$c " ;;
+                       esac
+                       array[$#array+1]=${c#"$colon_word"}
+               done
+
+               compset -P '*[=:]'
+               compadd -Q -S '' -a -- array && _ret=0
+       }
+
+       _perf ()
+       {
+               local _ret=1 cur cword prev
+               cur=${words[CURRENT]}
+               prev=${words[CURRENT-1]}
+               let cword=CURRENT-1
+               emulate ksh -c __perf_main
+               let _ret && _default && _ret=0
+               return _ret
+       }
+
+       compdef _perf perf
+       return
+fi
+
 type perf &>/dev/null &&
 _perf()
 {