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f1d306feab
fzf/shell/completion.bash
Christoph Anton Mitterer f1d306feab [shell] move username prefixing code where needed 
`__fzf_list_hosts()` seems like a function a user may want to override with some
custom code.
For that reason it should be kept as simple as possible, that is printing only
hostnames, one per line, optionally in some sorting.

The handling of adding a `username@` (which is then the same for each line), if
any, would unnecessarily complicate that for people who want to override the
function.
Therefore this commit moves that to the places where it's actually used (as of
now only `_fzf_complete_ssh()`).

This also saves any such handling for `_fzf_host_completion()`, where this isn’t
needed at all.

Right now it comes at a cost, namely an extra invocation of `awk` in the
`_fzf_complete_ssh()`-case.
However, it should be easily possible to improve `__fzf_list_hosts()` to no
longer need the final `awk` in the pipeline there.

Signed-off-by: Christoph Anton Mitterer <mail@christoph.anton.mitterer.name>
2023-10-12 20:44:25 +09:00

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# ____ ____
# / __/___ / __/
# / /_/_ / / /_
# / __/ / /_/ __/
# /_/ /___/_/ completion.bash
#
# - $FZF_TMUX (default: 0)
# - $FZF_TMUX_OPTS (default: empty)
# - $FZF_COMPLETION_TRIGGER (default: '**')
# - $FZF_COMPLETION_OPTS (default: empty)
[[ $- =~ i ]] || 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 | command 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 "$1" -print 2> /dev/null | command sed 's@^\./@@'
}
fi
###########################################################
# To redraw line after fzf closes (printf '\e[5n')
bind '"\e[0n": redraw-current-line' 2> /dev/null
__fzf_comprun() {
if [[ "$(type -t _fzf_comprun 2>&1)" = function ]]; then
_fzf_comprun "$@"
elif [[ -n "${TMUX_PANE-}" ]] && { [[ "${FZF_TMUX:-0}" != 0 ]] || [[ -n "${FZF_TMUX_OPTS-}" ]]; }; then
shift
fzf-tmux ${FZF_TMUX_OPTS:--d${FZF_TMUX_HEIGHT:-40%}} -- "$@"
else
shift
fzf "$@"
fi
}
__fzf_orig_completion() {
local l comp f cmd
while read -r l; do
if [[ "$l" =~ ^(.*\ -F)\ *([^ ]*).*\ ([^ ]*)$ ]]; then
comp="${BASH_REMATCH[1]}"
f="${BASH_REMATCH[2]}"
cmd="${BASH_REMATCH[3]}"
[[ "$f" = _fzf_* ]] && continue
printf -v "_fzf_orig_completion_${cmd//[^A-Za-z0-9_]/_}" "%s" "${comp} %s ${cmd} #${f}"
if [[ "$l" = *" -o nospace "* ]] && [[ ! "${__fzf_nospace_commands-}" = *" $cmd "* ]]; then
__fzf_nospace_commands="${__fzf_nospace_commands-} $cmd "
fi
fi
done
}
_fzf_opts_completion() {
local cur prev opts
COMPREPLY=()
cur="${COMP_WORDS[COMP_CWORD]}"
prev="${COMP_WORDS[COMP_CWORD-1]}"
opts="
-h --help
-x --extended
-e --exact
--extended-exact
+x --no-extended
+e --no-exact
-q --query
-f --filter
--literal
--no-literal
--algo
--scheme
--expect
--no-expect
--enabled --no-phony
--disabled --phony
--tiebreak
--bind
--color
--toggle-sort
-d --delimiter
-n --nth
--with-nth
-s --sort
+s --no-sort
--track
--no-track
--tac
--no-tac
-i
+i
-m --multi
+m --no-multi
--ansi
--no-ansi
--no-mouse
+c --no-color
+2 --no-256
--black
--no-black
--bold
--no-bold
--layout
--reverse
--no-reverse
--cycle
--no-cycle
--keep-right
--no-keep-right
--hscroll
--no-hscroll
--hscroll-off
--scroll-off
--filepath-word
--no-filepath-word
--info
--no-info
--inline-info
--no-inline-info
--separator
--no-separator
--scrollbar
--no-scrollbar
--jump-labels
-1 --select-1
+1 --no-select-1
-0 --exit-0
+0 --no-exit-0
--read0
--no-read0
--print0
--no-print0
--print-query
--no-print-query
--prompt
--pointer
--marker
--sync
--no-sync
--async
--no-history
--history
--history-size
--no-header
--no-header-lines
--header
--header-lines
--header-first
--no-header-first
--ellipsis
--preview
--no-preview
--preview-window
--height
--min-height
--no-height
--no-margin
--no-padding
--no-border
--border
--no-border-label
--border-label
--border-label-pos
--no-preview-label
--preview-label
--preview-label-pos
--no-unicode
--unicode
--margin
--padding
--tabstop
--listen
--no-listen
--clear
--no-clear
--version
--"
case "${prev}" in
--algo)
COMPREPLY=( $(compgen -W "v1 v2" -- "$cur") )
return 0
;;
--scheme)
COMPREPLY=( $(compgen -W "default path history" -- "$cur") )
return 0
;;
--tiebreak)
COMPREPLY=( $(compgen -W "length chunk begin end index" -- "$cur") )
return 0
;;
--color)
COMPREPLY=( $(compgen -W "dark light 16 bw no" -- "$cur") )
return 0
;;
--layout)
COMPREPLY=( $(compgen -W "default reverse reverse-list" -- "$cur") )
return 0
;;
--info)
COMPREPLY=( $(compgen -W "default right hidden inline inline-right" -- "$cur") )
return 0
;;
--preview-window)
COMPREPLY=( $(compgen -W "
default
hidden
nohidden
wrap
nowrap
cycle
nocycle
up top
down bottom
left
right
rounded border border-rounded
sharp border-sharp
border-bold
border-block
border-thinblock
border-double
noborder border-none
border-horizontal
border-vertical
border-up border-top
border-down border-bottom
border-left
border-right
follow
nofollow" -- "$cur") )
return 0
;;
--border)
COMPREPLY=( $(compgen -W "rounded sharp bold block thinblock double horizontal vertical top bottom left right none" -- "$cur") )
return 0
;;
--border-label-pos|--preview-label-pos)
COMPREPLY=( $(compgen -W "center bottom top" -- "$cur") )
return 0
;;
esac
if [[ "$cur" =~ ^-|\+ ]]; then
COMPREPLY=( $(compgen -W "${opts}" -- "$cur") )
return 0
fi
return 0
}
_fzf_handle_dynamic_completion() {
local cmd orig_var orig ret orig_cmd orig_complete
cmd="$1"
shift
orig_cmd="$1"
orig_var="_fzf_orig_completion_$cmd"
orig="${!orig_var-}"
orig="${orig##*#}"
if [[ -n "$orig" ]] && type "$orig" > /dev/null 2>&1; then
$orig "$@"
elif [[ -n "${_fzf_completion_loader-}" ]]; then
orig_complete=$(complete -p "$orig_cmd" 2> /dev/null)
_completion_loader "$@"
ret=$?
# _completion_loader may not have updated completion for the command
if [[ "$(complete -p "$orig_cmd" 2> /dev/null)" != "$orig_complete" ]]; then
__fzf_orig_completion < <(complete -p "$orig_cmd" 2> /dev/null)
if [[ "${__fzf_nospace_commands-}" = *" $orig_cmd "* ]]; then
eval "${orig_complete/ -F / -o nospace -F }"
else
eval "$orig_complete"
fi
fi
return $ret
fi
}
__fzf_generic_path_completion() {
local cur base dir leftover matches trigger cmd
cmd="${COMP_WORDS[0]}"
if [[ $cmd == \\* ]]; then
cmd="${cmd:1}"
fi
cmd="${cmd//[^A-Za-z0-9_=]/_}"
COMPREPLY=()
trigger=${FZF_COMPLETION_TRIGGER-'**'}
cur="${COMP_WORDS[COMP_CWORD]}"
if [[ "$cur" == *"$trigger" ]] && [[ $cur != *'$('* ]] && [[ $cur != *':='* ]] && [[ $cur != *'`'* ]]; then
base=${cur:0:${#cur}-${#trigger}}
eval "base=$base" 2> /dev/null || return
dir=
[[ $base = *"/"* ]] && dir="$base"
while true; do
if [[ -z "$dir" ]] || [[ -d "$dir" ]]; then
leftover=${base/#"$dir"}
leftover=${leftover/#\/}
[[ -z "$dir" ]] && dir='.'
[[ "$dir" != "/" ]] && dir="${dir/%\//}"
matches=$(eval "$1 $(printf %q "$dir")" | FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse --scheme=path --bind=ctrl-z:ignore ${FZF_DEFAULT_OPTS-} ${FZF_COMPLETION_OPTS-} $2" __fzf_comprun "$4" -q "$leftover" | while read -r item; do
printf "%q " "${item%$3}$3"
done)
matches=${matches% }
[[ -z "$3" ]] && [[ "${__fzf_nospace_commands-}" = *" ${COMP_WORDS[0]} "* ]] && matches="$matches "
if [[ -n "$matches" ]]; then
COMPREPLY=( "$matches" )
else
COMPREPLY=( "$cur" )
fi
printf '\e[5n'
return 0
fi
dir=$(command dirname "$dir")
[[ "$dir" =~ /$ ]] || dir="$dir"/
done
else
shift
shift
shift
_fzf_handle_dynamic_completion "$cmd" "$@"
fi
}
_fzf_complete() {
# Split arguments around --
local args rest str_arg i sep
args=("$@")
sep=
for i in "${!args[@]}"; do
if [[ "${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 cur selected trigger cmd post
post="$(caller 0 | command awk '{print $2}')_post"
type -t "$post" > /dev/null 2>&1 || post='command cat'
cmd="${COMP_WORDS[0]//[^A-Za-z0-9_=]/_}"
trigger=${FZF_COMPLETION_TRIGGER-'**'}
cur="${COMP_WORDS[COMP_CWORD]}"
if [[ "$cur" == *"$trigger" ]] && [[ $cur != *'$('* ]] && [[ $cur != *':='* ]] && [[ $cur != *'`'* ]]; then
cur=${cur:0:${#cur}-${#trigger}}
selected=$(FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse --bind=ctrl-z:ignore ${FZF_DEFAULT_OPTS-} ${FZF_COMPLETION_OPTS-} $str_arg" __fzf_comprun "${rest[0]}" "${args[@]}" -q "$cur" | $post | command tr '\n' ' ')
selected=${selected% } # Strip trailing space not to repeat "-o nospace"
if [[ -n "$selected" ]]; then
COMPREPLY=("$selected")
else
COMPREPLY=("$cur")
fi
printf '\e[5n'
return 0
else
_fzf_handle_dynamic_completion "$cmd" "${rest[@]}"
fi
}
_fzf_path_completion() {
__fzf_generic_path_completion _fzf_compgen_path "-m" "" "$@"
}
# Deprecated. No file only completion.
_fzf_file_completion() {
_fzf_path_completion "$@"
}
_fzf_dir_completion() {
__fzf_generic_path_completion _fzf_compgen_dir "" "/" "$@"
}
_fzf_complete_kill() {
_fzf_proc_completion "$@"
}
_fzf_proc_completion() {
_fzf_complete -m --header-lines=1 --preview 'echo {}' --preview-window down:3:wrap --min-height 15 -- "$@" < <(
command ps -eo user,pid,ppid,start,time,command 2> /dev/null ||
command ps -eo user,pid,ppid,time,args # For BusyBox
)
}
_fzf_proc_completion_post() {
command awk '{print $2}'
}
__fzf_list_hosts() {
command cat <(command tail -n +1 ~/.ssh/config ~/.ssh/config.d/* /etc/ssh/ssh_config 2> /dev/null | command grep -i '^\s*host\(name\)\? ' | command awk '{for (i = 2; i <= NF; i++) print $1 " " $i}' | command grep -v '[*?%]') \
<(command grep -oE '^[[a-z0-9.,:-]+' ~/.ssh/known_hosts 2> /dev/null | command tr ',' '\n' | command tr -d '[' | command awk '{ print $1 " " $1 }') \
<(command grep -v '^\s*\(#\|$\)' /etc/hosts 2> /dev/null | command grep -Fv '0.0.0.0') |
command awk '{if (length($2) > 0) {print $2}}' | command sort -u
}
_fzf_host_completion() {
_fzf_complete +m -- "$@" < <(__fzf_list_hosts)
}
# Values for $1 $2 $3 are described here
# https://www.gnu.org/software/bash/manual/html_node/Programmable-Completion.html
# > the first argument ($1) is the name of the command whose arguments are being completed,
# > the second argument ($2) is the word being completed,
# > and the third argument ($3) is the word preceding the word being completed on the current command line.
_fzf_complete_ssh() {
case $3 in
-i|-F|-E)
_fzf_path_completion "$@"
;;
*)
local user=
[[ "$2" =~ '@' ]] && user="${2%%@*}@"
_fzf_complete +m -- "$@" < <(__fzf_list_hosts | command awk -v user="$user" '{print user $0}')
;;
esac
}
_fzf_var_completion() {
_fzf_complete -m -- "$@" < <(
declare -xp | command sed -En 's|^declare [^ ]+ ([^=]+).*|\1|p'
)
}
_fzf_alias_completion() {
_fzf_complete -m -- "$@" < <(
alias | command sed -En 's|^alias ([^=]+).*|\1|p'
)
}
# fzf options
complete -o default -F _fzf_opts_completion fzf
# fzf-tmux is a thin fzf wrapper that has only a few more options than fzf
# itself. As a quick improvement we take fzf's completion. Adding the few extra
# fzf-tmux specific options (like `-w WIDTH`) are left as a future patch.
complete -o default -F _fzf_opts_completion fzf-tmux
d_cmds="${FZF_COMPLETION_DIR_COMMANDS:-cd pushd rmdir}"
a_cmds="
awk bat cat diff diff3
emacs emacsclient ex file ftp g++ gcc gvim head hg hx java
javac ld less more mvim nvim patch perl python ruby
sed sftp sort source tail tee uniq vi view vim wc xdg-open
basename bunzip2 bzip2 chmod chown curl cp dirname du
find git grep gunzip gzip hg jar
ln ls mv open rm rsync scp
svn tar unzip zip"
# Preserve existing completion
__fzf_orig_completion < <(complete -p $d_cmds $a_cmds 2> /dev/null)
if type _completion_loader > /dev/null 2>&1; then
_fzf_completion_loader=1
fi
__fzf_defc() {
local cmd func opts orig_var orig def
cmd="$1"
func="$2"
opts="$3"
orig_var="_fzf_orig_completion_${cmd//[^A-Za-z0-9_]/_}"
orig="${!orig_var-}"
if [[ -n "$orig" ]]; then
printf -v def "$orig" "$func"
eval "$def"
else
complete -F "$func" $opts "$cmd"
fi
}
# Anything
for cmd in $a_cmds; do
__fzf_defc "$cmd" _fzf_path_completion "-o default -o bashdefault"
done
# Directory
for cmd in $d_cmds; do
__fzf_defc "$cmd" _fzf_dir_completion "-o nospace -o dirnames"
done
# ssh
__fzf_defc ssh _fzf_complete_ssh "-o default -o bashdefault"
unset cmd d_cmds a_cmds
_fzf_setup_completion() {
local kind fn cmd
kind=$1
fn=_fzf_${1}_completion
if [[ $# -lt 2 ]] || ! type -t "$fn" > /dev/null; then
echo "usage: ${FUNCNAME[0]} path|dir|var|alias|host|proc COMMANDS..."
return 1
fi
shift
__fzf_orig_completion < <(complete -p "$@" 2> /dev/null)
for cmd in "$@"; do
case "$kind" in
dir) __fzf_defc "$cmd" "$fn" "-o nospace -o dirnames" ;;
var) __fzf_defc "$cmd" "$fn" "-o default -o nospace -v" ;;
alias) __fzf_defc "$cmd" "$fn" "-a" ;;
*) __fzf_defc "$cmd" "$fn" "-o default -o bashdefault" ;;
esac
done
}
# Environment variables / Aliases / Hosts / Process
_fzf_setup_completion 'var' export unset printenv
_fzf_setup_completion 'alias' unalias
_fzf_setup_completion 'host' telnet
_fzf_setup_completion 'proc' kill
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