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kakoune/rc/tools/menu.kak
Johannes Altmanninger d1037072b0 rc tools menu: add -on-abort switch
Along -select-cmds this is useful to implement preview functionality.
2023-11-20 20:47:22 +01:00

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provide-module menu %§§
define-command menu -params 1.. -docstring %{
menu [<switches>] <name1> <commands1> <name2> <commands2>...: display a
menu and execute commands for the selected item
-auto-single instantly validate if only one item is available
-select-cmds each item specify an additional command to run when selected
} %{
evaluate-commands %sh{
auto_single=false
select_cmds=false
stride=2
on_abort=
while true
do
case "$1" in
(-auto-single) auto_single=true ;;
(-select-cmds) select_cmds=true; stride=3 ;;
(-on-abort) on_abort="$2"; shift ;;
(-markup) ;; # no longer supported
(*) break ;;
esac
shift
done
if [ $(( $# % $stride )) -ne 0 ]; then
echo fail "wrong argument count"
exit
fi
if $auto_single && [ $# -eq $stride ]; then
printf %s "$2"
exit
fi
shellquote() {
printf "'%s'" "$(printf %s "$1" | sed "s/'/'\\\\''/g; s/§/§§/g; $2")"
}
cases=
select_cases=
completion=
nl=$(printf '\n.'); nl=${nl%.}
while [ $# -gt 0 ]; do
title=$1
command=$2
completion="${completion}${title}${nl}"
cases="${cases}
($(shellquote "$title" s/¶/¶¶/g))
printf '%s\\n' $(shellquote "$command" s/¶/¶¶/g)
;;"
if $select_cmds; then
select_command=$3
select_cases="${select_cases}
($(shellquote "$title" s/¶/¶¶/g))
printf '%s\\n' $(shellquote "$select_command" s/¶/¶¶/g)
;;"
fi
shift $stride
done
printf "\
prompt '' %%§
evaluate-commands %%sh¶
case \"\$kak_text\" in \
%s
(*) echo fail -- no such item: \"'\$(printf %%s \"\$kak_text\" | sed \"s/'/''/g\")'\" ;;
esac
§" "$cases"
if $select_cmds; then
printf " \
-on-change %%§
evaluate-commands %%sh¶
case \"\$kak_text\" in \
%s
(*) : ;;
esac
§" "$select_cases"
fi
if [ -n "$on_abort" ]; then
printf " -on-abort '%s'" "$(printf %s "$on_abort" | sed "s/'/''/g")"
fi
printf ' -menu -shell-script-candidates %%§
printf %%s %s
§\n' "$(shellquote "$completion")"
}
}