# __ __ # / /_ / __/ # / // / / /_ # / __/ / /_/ __/ # /_/ /__// completion.zsh # # - $FZF_TMUX (default: 0) # - $FZF_TMUX_OPTS (default: '-d 40%') # - $FZF_COMPLETION_TRIGGER (default: '**') # - $FZF_COMPLETION_OPTS (default: empty)

# Both branches of the following `if` do the same thing – define # __fzf_completion_options such that `eval $__fzf_completion_options` sets # all options to the same values they currently have. We'll do just that at # the bottom of the file after changing options to what we prefer. # # IMPORTANT: Until we get to the `emulate` line, all words that can be quoted # must be quoted in order to prevent alias expansion. In addition, code must # be written in a way works with any set of zsh options. This is very tricky, so # careful when you change it. # # Start by loading the builtin zsh/parameter module. It provides `options` # associative array that stores current shell options. if 'zmodload' 'zsh/parameter' 2>'/dev/null' && (( ${+options} )); then

# This is the fast branch and it gets taken on virtually all Zsh installations.
#
# ${(kv)options[@]} expands to array of keys (option names) and values ("on"
# or "off"). The subsequent expansion# with (j: :) flag joins all elements
# together separated by spaces. __fzf_completion_options ends up with a value
# like this: "options=(shwordsplit off aliases on ...)".
__fzf_completion_options="options=(${(j: :)${(kv)options[@]}})"

else

# This branch is much slower because it forks to get the names of all
# zsh options. It's possible to eliminate this fork but it's not worth the
# trouble because this branch gets taken only on very ancient or broken
# zsh installations.
() {
  # That `()` above defines an anonymous function. This is essentially a scope
  # for local parameters. We use it to avoid polluting global scope.
  'local' '__fzf_opt'
  __fzf_completion_options="setopt"
  # `set -o` prints one line for every zsh option. Each line contains option
  # name, some spaces, and then either "on" or "off". We just want option names.
  # Expansion with (@f) flag splits a string into lines. The outer expansion
  # removes spaces and everything that follow them on every line. __fzf_opt
  # ends up iterating over option names: shwordsplit, aliases, etc.
  for __fzf_opt in "${(@)${(@f)$(set -o)}%% *}"; do
    if [[ -o "$__fzf_opt" ]]; then
      # Option $__fzf_opt is currently on, so remember to set it back on.
      __fzf_completion_options+=" -o $__fzf_opt"
    else
      # Option $__fzf_opt is currently off, so remember to set it back off.
      __fzf_completion_options+=" +o $__fzf_opt"
    fi
  done
  # The value of __fzf_completion_options here looks like this:
  # "setopt +o shwordsplit -o aliases ..."
}

fi

# Enable the default zsh options (those marked with <Z> in `man zshoptions`) # but without `aliases`. Aliases in functions are expanded when functions are # defined, so if we disable aliases here, we'll be sure to have no pesky # aliases in any of our functions. This way we won't need prefix every # command with `command` or to quote every word to defend against global # aliases. Note that `aliases` is not the only option that's important to # control. There are several others that could wreck havoc if they are set # to values we don't expect. With the following `emulate` command we # sidestep this issue entirely. 'emulate' 'zsh' '-o' 'no_aliases'

# This brace is the start of try-always block. The `always` part is like # `finally` in lesser languages. We use it to always restore user options. {

# Bail out if not interactive shell.

[ -o interactive ]

|| return 0

# To use custom commands instead of find, override fzf_compgen{path,dir} if ! declare -f _fzf_compgen_path > /dev/null; then

_fzf_compgen_path() {
  echo "$1"
  command find -L "$1" \
    -name .git -prune -o -name .hg -prune -o -name .svn -prune -o \( -type d -o -type f -o -type l \) \
    -a -not -path "$1" -print 2> /dev/null | sed 's@^\./@@'
}

fi

if ! declare -f _fzf_compgen_dir > /dev/null; then

_fzf_compgen_dir() {
  command find -L "$1" \
    -name .git -prune -o -name .hg -prune -o -name .svn -prune -o -type d \
    -a -not -path "$1" -print 2> /dev/null | sed 's@^\./@@'
}

fi

###########################################################

__fzf_comprun() {

if [[ "$(type _fzf_comprun 2>&1)" =~ function ]]; then
  _fzf_comprun "$@"
elif [ -n "$TMUX_PANE" ] && { [ "${FZF_TMUX:-0}" != 0 ] || [ -n "$FZF_TMUX_OPTS" ]; }; then
  shift
  if [ -n "$FZF_TMUX_OPTS" ]; then
    fzf-tmux ${(Q)${(Z+n+)FZF_TMUX_OPTS}} -- "$@"
  else
    fzf-tmux -d ${FZF_TMUX_HEIGHT:-40%} -- "$@"
  fi
else
  shift
  fzf "$@"
fi

}

# Extract the name of the command. e.g. foo=1 bar baz**<tab> __fzf_extract_command() {

local token tokens
tokens=(${(z)1})
for token in $tokens; do
  token=${(Q)token}
  if [[ "$token" =~ [[:alnum:]] && ! "$token" =~ "=" ]]; then
    echo "$token"
    return
  fi
done
echo "${tokens[1]}"

}

__fzf_generic_path_completion() {

local base lbuf cmd compgen fzf_opts suffix tail dir leftover matches
base=$1
lbuf=$2
cmd=$(__fzf_extract_command "$lbuf")
compgen=$3
fzf_opts=$4
suffix=$5
tail=$6

setopt localoptions nonomatch
eval "base=$base"
[[ $base = *"/"* ]] && dir="$base"
while [ 1 ]; do
  if [[ -z "$dir" || -d ${dir} ]]; then
    leftover=${base/#"$dir"}
    leftover=${leftover/#\/}
    [ -z "$dir" ] && dir='.'
    [ "$dir" != "/" ] && dir="${dir/%\//}"
    matches=$(eval "$compgen $(printf %q "$dir")" | FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse --bind=ctrl-z:ignore $FZF_DEFAULT_OPTS $FZF_COMPLETION_OPTS" __fzf_comprun "$cmd" ${(Q)${(Z+n+)fzf_opts}} -q "$leftover" | while read item; do
      echo -n "${(q)item}$suffix "
    done)
    matches=${matches% }
    if [ -n "$matches" ]; then
      LBUFFER="$lbuf$matches$tail"
    fi
    zle reset-prompt
    break
  fi
  dir=$(dirname "$dir")
  dir=${dir%/}/
done

}

_fzf_path_completion() {

__fzf_generic_path_completion "$1" "$2" _fzf_compgen_path \
  "-m" "" " "

}

_fzf_dir_completion() {

__fzf_generic_path_completion "$1" "$2" _fzf_compgen_dir \
  "" "/" ""

}

_fzf_feed_fifo() (

command rm -f "$1"
mkfifo "$1"
cat <&0 > "$1" &

)

_fzf_complete() {

setopt localoptions ksh_arrays
# Split arguments around --
local args rest str_arg i sep
args=("$@")
sep=
for i in {0..${#args[@]}}; do
  if [[ "${args[$i]}" = -- ]]; then
    sep=$i
    break
  fi
done
if [[ -n "$sep" ]]; then
  str_arg=
  rest=("${args[@]:$((sep + 1)):${#args[@]}}")
  args=("${args[@]:0:$sep}")
else
  str_arg=$1
  args=()
  shift
  rest=("$@")
fi

local fifo lbuf cmd matches post
fifo="${TMPDIR:-/tmp}/fzf-complete-fifo-$$"
lbuf=${rest[0]}
cmd=$(__fzf_extract_command "$lbuf")
post="${funcstack[1]}_post"
type $post > /dev/null 2>&1 || post=cat

_fzf_feed_fifo "$fifo"
matches=$(FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse --bind=ctrl-z:ignore $FZF_DEFAULT_OPTS $FZF_COMPLETION_OPTS $str_arg" __fzf_comprun "$cmd" "${args[@]}" -q "${(Q)prefix}" < "$fifo" | $post | tr '\n' ' ')
if [ -n "$matches" ]; then
  LBUFFER="$lbuf$matches"
fi
command rm -f "$fifo"

}

_fzf_complete_telnet() {

_fzf_complete +m -- "$@" < <(
  command grep -v '^\s*\(#\|$\)' /etc/hosts | command grep -Fv '0.0.0.0' |
      awk '{if (length($2) > 0) {print $2}}' | sort -u
)

}

_fzf_complete_ssh() {

_fzf_complete +m -- "$@" < <(
  setopt localoptions nonomatch
  command cat <(command tail -n +1 ~/.ssh/config ~/.ssh/config.d/* /etc/ssh/ssh_config 2> /dev/null | command grep -i '^\s*host\(name\)\? ' | awk '{for (i = 2; i <= NF; i++) print $1 " " $i}' | command grep -v '[*?]') \
      <(command grep -oE '^[[a-z0-9.,:-]+' ~/.ssh/known_hosts | tr ',' '\n' | tr -d '[' | awk '{ print $1 " " $1 }') \
      <(command grep -v '^\s*\(#\|$\)' /etc/hosts | command grep -Fv '0.0.0.0') |
      awk '{if (length($2) > 0) {print $2}}' | sort -u
)

}

_fzf_complete_export() {

_fzf_complete -m -- "$@" < <(
  declare -xp | sed 's/=.*//' | sed 's/.* //'
)

}

_fzf_complete_unset() {

_fzf_complete -m -- "$@" < <(
  declare -xp | sed 's/=.*//' | sed 's/.* //'
)

}

_fzf_complete_unalias() {

_fzf_complete +m -- "$@" < <(
  alias | sed 's/=.*//'
)

}

_fzf_complete_kill() {

_fzf_complete -m --preview 'echo {}' --preview-window down:3:wrap --min-height 15 -- "$@" < <(
  command ps -ef | sed 1d
)

}

_fzf_complete_kill_post() {

awk '{print $2}'

}

fzf-completion() {

local tokens cmd prefix trigger tail matches lbuf d_cmds
setopt localoptions noshwordsplit noksh_arrays noposixbuiltins

# http://zsh.sourceforge.net/FAQ/zshfaq03.html
# http://zsh.sourceforge.net/Doc/Release/Expansion.html#Parameter-Expansion-Flags
tokens=(${(z)LBUFFER})
if [ ${#tokens} -lt 1 ]; then
  zle ${fzf_default_completion:-expand-or-complete}
  return
fi

cmd=$(__fzf_extract_command "$LBUFFER")

# Explicitly allow for empty trigger.
trigger=${FZF_COMPLETION_TRIGGER-'**'}
[ -z "$trigger" -a ${LBUFFER[-1]} = ' ' ] && tokens+=("")

# When the trigger starts with ';', it becomes a separate token
if [[ ${LBUFFER} = *"${tokens[-2]}${tokens[-1]}" ]]; then
  tokens[-2]="${tokens[-2]}${tokens[-1]}"
  tokens=(${tokens[0,-2]})
fi

lbuf=$LBUFFER
tail=${LBUFFER:$(( ${#LBUFFER} - ${#trigger} ))}
# Kill completion (do not require trigger sequence)
if [ "$cmd" = kill -a ${LBUFFER[-1]} = ' ' ]; then
  tail=$trigger
  tokens+=$trigger
  lbuf="$lbuf$trigger"
fi

# Trigger sequence given
if [ ${#tokens} -gt 1 -a "$tail" = "$trigger" ]; then
  d_cmds=(${=FZF_COMPLETION_DIR_COMMANDS:-cd pushd rmdir})

  [ -z "$trigger"      ] && prefix=${tokens[-1]} || prefix=${tokens[-1]:0:-${#trigger}}
  [ -n "${tokens[-1]}" ] && lbuf=${lbuf:0:-${#tokens[-1]}}

  if eval "type _fzf_complete_${cmd} > /dev/null"; then
    prefix="$prefix" eval _fzf_complete_${cmd} ${(q)lbuf}
    zle reset-prompt
  elif [ ${d_cmds[(i)$cmd]} -le ${#d_cmds} ]; then
    _fzf_dir_completion "$prefix" "$lbuf"
  else
    _fzf_path_completion "$prefix" "$lbuf"
  fi
# Fall back to default completion
else
  zle ${fzf_default_completion:-expand-or-complete}
fi

}

-z “$fzf_default_completion”

&& {

binding=$(bindkey '^I')
[[ $binding =~ 'undefined-key' ]] || fzf_default_completion=$binding[(s: :w)2]
unset binding

}

zle -N fzf-completion bindkey '^I' fzf-completion

} always {

# Restore the original options.
eval $__fzf_completion_options
'unset' '__fzf_completion_options'

}