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 $cur
 101 }
 102
 103 __perf_prev_skip_opts ()
 104 {
 105         local i cmd_ cmds_
 106
 107         let i=cword-1
 108         cmds_=$($cmd --list-cmds)
 109         prev_skip_opts=()
 110         while [ $i -ge 0 ]; do
 111                 for cmd_ in $cmds_; do
 112                         if [[ ${words[i]} == $cmd_ ]]; then
 113                                 prev_skip_opts=${words[i]}
 114                                 return
 115                         fi
 116                 done
 117                 ((i--))
 118         done
 119 }
 120 __perf_main ()
 121 {
 122         local cmd
 123
 124         cmd=${words[0]}
 125         COMPREPLY=()
 126
 127         # Skip options backward and find the last perf command
 128         __perf_prev_skip_opts
 129         # List perf subcommands or long options
 130         if [ $cword -eq 1 ]; then
 131                 if [[ $cur == --* ]]; then
 132                         cmds=$($cmd --list-opts)
 133                 else
 134                         cmds=$($cmd --list-cmds)
 135                 fi
 136                 __perfcomp "$cmds" "$cur"
 137         # List possible events for -e option
 138         elif [[ $prev == "-e" && "${words[1]}" == @(record|stat|top) ]]; then
 139                 evts=$($cmd list --raw-dump)
 140                 __perfcomp_colon "$evts" "$cur"
 141         else
 142                 # List subcommands for perf commands
 143                 if [[ $prev_skip_opts == @(kvm|kmem|mem|lock|sched) ]]; then
 144                         subcmds=$($cmd $prev_skip_opts --list-cmds)
 145                         __perfcomp_colon "$subcmds" "$cur"
 146                 fi
 147                 # List long option names
 148                 if [[ $cur == --* ]];  then
 149                         subcmd=${words[1]}
 150                         opts=$($cmd $subcmd --list-opts)
 151                         __perfcomp "$opts" "$cur"
 152                 fi
 153         fi
 154 }
 155
 156 if [[ -n ${ZSH_VERSION-} ]]; then
 157         autoload -U +X compinit && compinit
 158
 159         __perfcomp ()
 160         {
 161                 emulate -L zsh
 162
 163                 local c IFS=$' \t\n'
 164                 local -a array
 165
 166                 for c in ${=1}; do
 167                         case $c in
 168                         --*=*|*.) ;;
 169                         *) c="$c " ;;
 170                         esac
 171                         array[${#array[@]}+1]="$c"
 172                 done
 173
 174                 compset -P '*[=:]'
 175                 compadd -Q -S '' -a -- array && _ret=0
 176         }
 177
 178         __perfcomp_colon ()
 179         {
 180                 emulate -L zsh
 181
 182                 local cur_="${2-$cur}"
 183                 local c IFS=$' \t\n'
 184                 local -a array
 185
 186                 if [[ "$cur_" == *:* ]]; then
 187                         local colon_word=${cur_%"${cur_##*:}"}
 188                 fi
 189
 190                 for c in ${=1}; do
 191                         case $c in
 192                         --*=*|*.) ;;
 193                         *) c="$c " ;;
 194                         esac
 195                         array[$#array+1]=${c#"$colon_word"}
 196                 done
 197
 198                 compset -P '*[=:]'
 199                 compadd -Q -S '' -a -- array && _ret=0
 200         }
 201
 202         _perf ()
 203         {
 204                 local _ret=1 cur cword prev
 205                 cur=${words[CURRENT]}
 206                 prev=${words[CURRENT-1]}
 207                 let cword=CURRENT-1
 208                 emulate ksh -c __perf_main
 209                 let _ret && _default && _ret=0
 210                 return _ret
 211         }
 212
 213         compdef _perf perf
 214         return
 215 fi
 216
 217 type perf &>/dev/null &&
 218 _perf()
 219 {
 220         local cur words cword prev
 221         _get_comp_words_by_ref -n =: cur words cword prev
 222         __perf_main
 223 } &&
 224
 225 complete -o bashdefault -o default -o nospace -F _perf perf 2>/dev/null \
 226         || complete -o default -o nospace -F _perf perf