tools/perf/perf-completion.sh

   1 # perf bash and zsh completion
   2
   3 # Taken from git.git's completion script.
   4 __my_reassemble_comp_words_by_ref()
   5 {
   6         local exclude i j first
   7         # Which word separators to exclude?
   8         exclude="${1//[^$COMP_WORDBREAKS]}"
   9         cword_=$COMP_CWORD
  10         if [ -z "$exclude" ]; then
  11                 words_=("${COMP_WORDS[@]}")
  12                 return
  13         fi
  14         # List of word completion separators has shrunk;
  15         # re-assemble words to complete.
  16         for ((i=0, j=0; i < ${#COMP_WORDS[@]}; i++, j++)); do
  17                 # Append each nonempty word consisting of just
  18                 # word separator characters to the current word.
  19                 first=t
  20                 while
  21                         [ $i -gt 0 ] &&
  22                         [ -n "${COMP_WORDS[$i]}" ] &&
  23                         # word consists of excluded word separators
  24                         [ "${COMP_WORDS[$i]//[^$exclude]}" = "${COMP_WORDS[$i]}" ]
  25                 do
  26                         # Attach to the previous token,
  27                         # unless the previous token is the command name.
  28                         if [ $j -ge 2 ] && [ -n "$first" ]; then
  29                                 ((j--))
  30                         fi
  31                         first=
  32                         words_[$j]=${words_[j]}${COMP_WORDS[i]}
  33                         if [ $i = $COMP_CWORD ]; then
  34                                 cword_=$j
  35                         fi
  36                         if (($i < ${#COMP_WORDS[@]} - 1)); then
  37                                 ((i++))
  38                         else
  39                                 # Done.
  40                                 return
  41                         fi
  42                 done
  43                 words_[$j]=${words_[j]}${COMP_WORDS[i]}
  44                 if [ $i = $COMP_CWORD ]; then
  45                         cword_=$j
  46                 fi
  47         done
  48 }
  49
  50 type _get_comp_words_by_ref &>/dev/null ||
  51 _get_comp_words_by_ref()
  52 {
  53         local exclude cur_ words_ cword_
  54         if [ "$1" = "-n" ]; then
  55                 exclude=$2
  56                 shift 2
  57         fi
  58         __my_reassemble_comp_words_by_ref "$exclude"
  59         cur_=${words_[cword_]}
  60         while [ $# -gt 0 ]; do
  61                 case "$1" in
  62                 cur)
  63                         cur=$cur_
  64                         ;;
  65                 prev)
  66                         prev=${words_[$cword_-1]}
  67                         ;;
  68                 words)
  69                         words=("${words_[@]}")
  70                         ;;
  71                 cword)
  72                         cword=$cword_
  73                         ;;
  74                 esac
  75                 shift
  76         done
  77 }
  78
  79 type __ltrim_colon_completions &>/dev/null ||
  80 __ltrim_colon_completions()
  81 {
  82         if [[ "$1" == *:* && "$COMP_WORDBREAKS" == *:* ]]; then
  83                 # Remove colon-word prefix from COMPREPLY items
  84                 local colon_word=${1%"${1##*:}"}
  85                 local i=${#COMPREPLY[*]}
  86                 while [[ $((--i)) -ge 0 ]]; do
  87                         COMPREPLY[$i]=${COMPREPLY[$i]#"$colon_word"}
  88                 done
  89         fi
  90 }
  91
  92 __perfcomp ()
  93 {
  94         COMPREPLY=( $( compgen -W "$1" -- "$2" ) )
  95 }
  96
  97 __perfcomp_colon ()
  98 {
  99         __perfcomp "$1" "$2"
 100         __ltrim_colon_completions $cur
 101 }
 102
 103 __perf_main ()
 104 {
 105         local cmd
 106
 107         cmd=${words[0]}
 108         COMPREPLY=()
 109
 110         # List perf subcommands or long options
 111         if [ $cword -eq 1 ]; then
 112                 if [[ $cur == --* ]]; then
 113                         cmds=$($cmd --list-opts)
 114                 else
 115                         cmds=$($cmd --list-cmds)
 116                 fi
 117                 __perfcomp "$cmds" "$cur"
 118         # List possible events for -e option
 119         elif [[ $prev == "-e" && "${words[1]}" == @(record|stat|top) ]]; then
 120                 evts=$($cmd list --raw-dump)
 121                 __perfcomp_colon "$evts" "$cur"
 122         # List subcommands for perf commands
 123         elif [[ $prev == @(kvm|kmem|mem|lock|sched) ]]; then
 124                 subcmds=$($cmd $prev --list-cmds)
 125                 __perfcomp_colon "$subcmds" "$cur"
 126         # List long option names
 127         elif [[ $cur == --* ]];  then
 128                 subcmd=${words[1]}
 129                 opts=$($cmd $subcmd --list-opts)
 130                 __perfcomp "$opts" "$cur"
 131         fi
 132 }
 133
 134 if [[ -n ${ZSH_VERSION-} ]]; then
 135         autoload -U +X compinit && compinit
 136
 137         __perfcomp ()
 138         {
 139                 emulate -L zsh
 140
 141                 local c IFS=$' \t\n'
 142                 local -a array
 143
 144                 for c in ${=1}; do
 145                         case $c in
 146                         --*=*|*.) ;;
 147                         *) c="$c " ;;
 148                         esac
 149                         array[${#array[@]}+1]="$c"
 150                 done
 151
 152                 compset -P '*[=:]'
 153                 compadd -Q -S '' -a -- array && _ret=0
 154         }
 155
 156         __perfcomp_colon ()
 157         {
 158                 emulate -L zsh
 159
 160                 local cur_="${2-$cur}"
 161                 local c IFS=$' \t\n'
 162                 local -a array
 163
 164                 if [[ "$cur_" == *:* ]]; then
 165                         local colon_word=${cur_%"${cur_##*:}"}
 166                 fi
 167
 168                 for c in ${=1}; do
 169                         case $c in
 170                         --*=*|*.) ;;
 171                         *) c="$c " ;;
 172                         esac
 173                         array[$#array+1]=${c#"$colon_word"}
 174                 done
 175
 176                 compset -P '*[=:]'
 177                 compadd -Q -S '' -a -- array && _ret=0
 178         }
 179
 180         _perf ()
 181         {
 182                 local _ret=1 cur cword prev
 183                 cur=${words[CURRENT]}
 184                 prev=${words[CURRENT-1]}
 185                 let cword=CURRENT-1
 186                 emulate ksh -c __perf_main
 187                 let _ret && _default && _ret=0
 188                 return _ret
 189         }
 190
 191         compdef _perf perf
 192         return
 193 fi
 194
 195 type perf &>/dev/null &&
 196 _perf()
 197 {
 198         local cur words cword prev
 199         _get_comp_words_by_ref -n =: cur words cword prev
 200         __perf_main
 201 } &&
 202
 203 complete -o bashdefault -o default -o nospace -F _perf perf 2>/dev/null \
 204         || complete -o default -o nospace -F _perf perf