126 lines
4.6 KiB
Bash
126 lines
4.6 KiB
Bash
# ble/contrib/integration/fzf-menu.bash (C) 2024, akinomyoga
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#
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# https://github.com/akinomyoga/ble.sh/issues/479
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## @fn ble/contrib/integration:fzf-menu/SELECTOR args...
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## Returns the index of the selected candidate. Users can override this
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## function to adjust the detailed behavior.
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##
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## @param[in] args...
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## The list of candidates. Each argument takes the form
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## "<index><SEP><word><SEP><desc>". <SEP> is specified by the shell
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## variable sep.
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## @var[in] common_prefix
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## The common prefix of the filter target
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## @var[in] sep
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## The separator used to separate the index, word, and description in an
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## argument
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## @stdout
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## Output the selected index.
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function ble/contrib/integration:fzf-menu/SELECTOR {
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local fzf_options
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fzf_options=(--ansi --query "$common_prefix")
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# Use Unicode box-drawing characters only when the width of the box-drawing
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# characters in the current terminal is 1. The width of the box-drawing
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# characters is specified to be East_Asian_Width=A (Ambiguous), and the
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# actual width depends on the terminal. However, fzf assumes the width of
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# the box-drawing characters to be always 1. This breaks the layout of the
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# terminal content in the terminals where the box-drawing characters have
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# double width. We check the width of the box-drawing characters (U+2500 as
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# a representative) and disable the use of the box-drawing characters by fzf
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# when it is not 1.
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local ret
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ble/util/c2w 0x2500
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((ret==1)) || ble/array#push fzf_options --no-unicode
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# When the current completion is performed by case-insensitive search (i.e.,
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# when the readline variable is set to "set completion-ignore-case on"), we
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# let fzf filter items by case-insensitive matching.
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[[ :$comp_type: == *:i:* ]] &&
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ble/array#push fzf_options --ignore-case
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local formatter="printf '%s\n' \"\$@\""
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ble/bin#has column &&
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formatter=$formatter' | column -ts "$sep" -o "$sep" -c unlimited'
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ble/array#push fzf_options -d "$sep" --with-nth=2.. --nth=1
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builtin eval -- "$formatter" | fzf "${fzf_options[@]}" | cut -d "$sep" -f 1
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}
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function ble/contrib/integration:fzf-menu/.get-common-prefix {
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local cand_word ret
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cand_word=("$@")
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ble/complete/candidates/determine-common-prefix
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common_prefix=$ret
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}
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function ble/contrib/integration:fzf-menu/.select-and-insert {
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if ((cand_count>1)); then
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local common_prefix=
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ble/contrib/integration:fzf-menu/.get-common-prefix "${cand_cand[@]}"
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(($?==148)) && return 148
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local desc_sgr0=$_ble_term_sgr0
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ble/color/face2sgr menu_desc_quote; local desc_sgrq=$ret
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ble/color/face2sgr menu_desc_type; local desc_sgrt=$ret
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# Create a list of "<index>^\<word>^\- <desc>" where ^\ represents the ANSI
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# control character FS (U+001C).
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local sep=$_ble_term_FS
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local -a list=()
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local i
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for ((i=0;i<cand_count;i++)); do
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local ACTION=${cand_pack[i]%%:*}
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local "${_ble_complete_cand_varnames[@]/%/=}" # disable=#D1570
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ble/complete/cand/unpack "${cand_pack[i]}"
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local g=0 prefix= suffix= desc=
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ble/function#try ble/complete/action:"$ACTION"/init-menu-item
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(($?==148)) && return 148
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ble/function#try ble/complete/action:"$ACTION"/get-desc
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(($?==148)) && return 148
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ble/color/g2sgr "$g"; local sgr=$ret
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local item=$prefix$sgr$CAND$_ble_term_sgr0$suffix
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item=${item//"$sep"/'^\'}
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desc=${desc//"$sep"/'^\'}
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ble/array#push list "$i$sep$item$_ble_term_sgr0$sep - $desc$_ble_term_sgr0"
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done
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ble/term/leave-for-widget
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local index
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ble/util/assign index 'ble/contrib/integration:fzf-menu/SELECTOR "${list[@]}"'
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ble/term/enter-for-widget
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ble/textarea#invalidate
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if [[ $index ]]; then
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cand_count=1
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cand_cand=("${cand_cand[index]}")
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cand_word=("${cand_word[index]}")
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cand_pack=("${cand_pack[index]}")
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fi
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fi
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if ((cand_count==1)); then
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ble/complete/insert-common
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fi
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# To suppress the post-processing for ble.sh's menu interface, we return 148.
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return 148
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}
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ble-import -C 'ble/function#push ble/complete/menu/show "ble/contrib/integration:fzf-menu/.select-and-insert"' core-complete
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# function ble/contrib/integration:fzf-menu/complete.after {
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# [[ $_ble_complete_menu_active ]] || return 0
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# local COMP1 COMP2 COMPS COMPV
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# local comp_type comps_flags comps_fixed
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# local cand_count cand_cand cand_word cand_pack
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# ble/complete/candidates/clear
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# ble/complete/menu/generate-candidates-from-menu
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# ble/complete/menu/clear
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# ble/contrib/integration:fzf-menu/.select-and-insert
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# }
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# ble-import -C 'ble/function#advice after ble/widget/complete "ble/contrib/integration:fzf-menu/compelte.after"' core-complete
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