mirror of
https://github.com/tonydamage/nux-env.git
synced 2025-12-11 13:24:28 +01:00
Tony Tkacik
4481ca2c56
Added: - autocompletion automaticly proposes tasks - autocompletion for debug, trace, help tasks - extension points for custom task specific autocompleters.
120 lines
3.4 KiB
Bash
120 lines
3.4 KiB
Bash
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## nux.repl.start <processor> [<prompt>] [<complete>]
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## Starts NUX REPL
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##
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## FIXME: Add autocompletion
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function nux.repl.start {
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function .null() {
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:
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}
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local processor=$1;
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local prompt=${2:-.null};
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local complete=$3;
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local command=""
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if nux.check.function $complete; then
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bind -x '"\C-i": "nux.repl.completion $prompt $complete"' &> /dev/null
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fi
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while IFS=" " read -e -p "$($prompt)" options
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do
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history -s "$options" > /dev/null 2>&1
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nux.log debug Readed line is: $nc_white$options$nc_end
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command=$(echo $options | cut -d" " -f1)
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arguments=${options#"$command"}
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nux.log debug Command: $command, arguments: $arguments
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case "$command" in
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exit)
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break;;
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*)
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$processor $command $arguments
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;;
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esac
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done
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}
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## nux.repl.completion <prompt> <completion>
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##
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##
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## This function is modified version of
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## https://github.com/mchav/with/blob/master/with
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function nux.repl.completion() {
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local prompt=$1;
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local compgen_command=$2;
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shift;shift;
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# print readline's prompt for visual separation
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if [ "$#" -eq 0 ]; then
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echo "$($prompt)$READLINE_LINE"
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fi
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pmpt=$($prompt)
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# remove part after readline cursor from completion line
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local completion_line completion_word
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completion_line="${READLINE_LINE:0:READLINE_POINT}"
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completion_word="${completion_line##* }"
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# set completion cursor according to pmpt length
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COMP_POINT=$((${#pmpt}+${#completion_line}+1))
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COMP_WORDBREAKS="\n\"'><=;|&(:"
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COMP_LINE="$pmpt $completion_line"
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# TODO: the purpose of these variables is still unclear
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# COMP_TYPE=63
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# COMP_KEY=9
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# get index of word to be completed
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local whitespaces_count escaped_whitespaces_count
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whitespaces_count=$(echo "$COMP_LINE" | grep -o ' ' | wc -l)
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escaped_whitespaces_count=$(echo "$COMP_LINE" | grep -o '\\ ' | wc -l)
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COMP_CWORD=$((whitespaces_count-escaped_whitespaces_count))
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# get sourced completion command
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local program_name complete_command
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program_name=${COMP_WORDS[0]}
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program_name=$(basename "$program_name")
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complete_command=$(complete -p | grep " ${program_name}$")
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COMPREPLY=()
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COMPREPLY=($($compgen_command "$completion_line"))
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# get commmon prefix of available completions
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local completions_prefix readline_prefix readline_suffix
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completions_prefix=$(printf "%s\n" "${COMPREPLY[@]}" | \
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sed -e '$!{N;s/^\(.*\).*\n\1.*$/\1\n\1/;D;}' | xargs)
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readline_prefix="${READLINE_LINE:0:READLINE_POINT}"
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readline_suffix="${READLINE_LINE:READLINE_POINT}"
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# remove the word to be completed
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readline_prefix=$(sed s/'\w*$'// <(echo "$readline_prefix") | xargs)
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READLINE_LINE=""
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if [[ "$readline_prefix" != "" ]]; then
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READLINE_LINE="$readline_prefix "
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fi
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READLINE_LINE="$READLINE_LINE$completions_prefix"
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# adjust readline cursor position
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READLINE_POINT=$((${#READLINE_LINE}+1))
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if [[ "$readline_suffix" != "" ]]; then
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READLINE_LINE="$READLINE_LINE $readline_suffix"
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fi
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local completions_count display_all
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completions_count=${#COMPREPLY[@]}
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display_all="y"
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if [[ $completions_count -eq 1 ]]; then
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READLINE_LINE=$(echo "$READLINE_LINE" | xargs)
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READLINE_LINE="$READLINE_LINE "
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return
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elif [[ $completions_count -gt 80 ]]; then
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echo -en "Display all $completions_count possibilities? (y or n) "
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read -N 1 display_all
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echo "$display_all"
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fi
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if [[ "$display_all" = "y" ]]; then
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for completion in "${COMPREPLY[@]}"; do echo "$completion"; done | column
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fi
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}
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