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| -rw-r--r-- | .zsh/completion/_hubble.zsh | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/.zsh/completion/_hubble.zsh b/.zsh/completion/_hubble.zsh new file mode 100644 index 0000000..4e54372 --- /dev/null +++ b/.zsh/completion/_hubble.zsh @@ -0,0 +1,159 @@ +#compdef _hubble hubble + +# zsh completion for hubble -*- shell-script -*- + +__hubble_debug() +{ + local file="$BASH_COMP_DEBUG_FILE" + if [[ -n ${file} ]]; then + echo "$*" >> "${file}" + fi +} + +_hubble() +{ + local shellCompDirectiveError=1 + local shellCompDirectiveNoSpace=2 + local shellCompDirectiveNoFileComp=4 + local shellCompDirectiveFilterFileExt=8 + local shellCompDirectiveFilterDirs=16 + + local lastParam lastChar flagPrefix requestComp out directive compCount comp lastComp + local -a completions + + __hubble_debug "\n========= starting completion logic ==========" + __hubble_debug "CURRENT: ${CURRENT}, words[*]: ${words[*]}" + + # The user could have moved the cursor backwards on the command-line. + # We need to trigger completion from the $CURRENT location, so we need + # to truncate the command-line ($words) up to the $CURRENT location. + # (We cannot use $CURSOR as its value does not work when a command is an alias.) + words=("${=words[1,CURRENT]}") + __hubble_debug "Truncated words[*]: ${words[*]}," + + lastParam=${words[-1]} + lastChar=${lastParam[-1]} + __hubble_debug "lastParam: ${lastParam}, lastChar: ${lastChar}" + + # For zsh, when completing a flag with an = (e.g., hubble -n=<TAB>) + # completions must be prefixed with the flag + setopt local_options BASH_REMATCH + if [[ "${lastParam}" =~ '-.*=' ]]; then + # We are dealing with a flag with an = + flagPrefix="-P ${BASH_REMATCH}" + fi + + # Prepare the command to obtain completions + requestComp="${words[1]} __complete ${words[2,-1]}" + if [ "${lastChar}" = "" ]; then + # If the last parameter is complete (there is a space following it) + # We add an extra empty parameter so we can indicate this to the go completion code. + __hubble_debug "Adding extra empty parameter" + requestComp="${requestComp} \"\"" + fi + + __hubble_debug "About to call: eval ${requestComp}" + + # Use eval to handle any environment variables and such + out=$(eval ${requestComp} 2>/dev/null) + __hubble_debug "completion output: ${out}" + + # Extract the directive integer following a : from the last line + local lastLine + while IFS='\n' read -r line; do + lastLine=${line} + done < <(printf "%s\n" "${out[@]}") + __hubble_debug "last line: ${lastLine}" + + if [ "${lastLine[1]}" = : ]; then + directive=${lastLine[2,-1]} + # Remove the directive including the : and the newline + local suffix + (( suffix=${#lastLine}+2)) + out=${out[1,-$suffix]} + else + # There is no directive specified. Leave $out as is. + __hubble_debug "No directive found. Setting do default" + directive=0 + fi + + __hubble_debug "directive: ${directive}" + __hubble_debug "completions: ${out}" + __hubble_debug "flagPrefix: ${flagPrefix}" + + if [ $((directive & shellCompDirectiveError)) -ne 0 ]; then + __hubble_debug "Completion received error. Ignoring completions." + return + fi + + compCount=0 + while IFS='\n' read -r comp; do + if [ -n "$comp" ]; then + # If requested, completions are returned with a description. + # The description is preceded by a TAB character. + # For zsh's _describe, we need to use a : instead of a TAB. + # We first need to escape any : as part of the completion itself. + comp=${comp//:/\\:} + + local tab=$(printf '\t') + comp=${comp//$tab/:} + + ((compCount++)) + __hubble_debug "Adding completion: ${comp}" + completions+=${comp} + lastComp=$comp + fi + done < <(printf "%s\n" "${out[@]}") + + if [ $((directive & shellCompDirectiveFilterFileExt)) -ne 0 ]; then + # File extension filtering + local filteringCmd + filteringCmd='_files' + for filter in ${completions[@]}; do + if [ ${filter[1]} != '*' ]; then + # zsh requires a glob pattern to do file filtering + filter="\*.$filter" + fi + filteringCmd+=" -g $filter" + done + filteringCmd+=" ${flagPrefix}" + + __hubble_debug "File filtering command: $filteringCmd" + _arguments '*:filename:'"$filteringCmd" + elif [ $((directive & shellCompDirectiveFilterDirs)) -ne 0 ]; then + # File completion for directories only + local subDir + subdir="${completions[1]}" + if [ -n "$subdir" ]; then + __hubble_debug "Listing directories in $subdir" + pushd "${subdir}" >/dev/null 2>&1 + else + __hubble_debug "Listing directories in ." + fi + + _arguments '*:dirname:_files -/'" ${flagPrefix}" + if [ -n "$subdir" ]; then + popd >/dev/null 2>&1 + fi + elif [ $((directive & shellCompDirectiveNoSpace)) -ne 0 ] && [ ${compCount} -eq 1 ]; then + __hubble_debug "Activating nospace." + # We can use compadd here as there is no description when + # there is only one completion. + compadd -S '' "${lastComp}" + elif [ ${compCount} -eq 0 ]; then + if [ $((directive & shellCompDirectiveNoFileComp)) -ne 0 ]; then + __hubble_debug "deactivating file completion" + else + # Perform file completion + __hubble_debug "activating file completion" + _arguments '*:filename:_files'" ${flagPrefix}" + fi + else + _describe "completions" completions $(echo $flagPrefix) + fi +} + +# don't run the completion function when being source-ed or eval-ed +if [ "$funcstack[1]" = "_hubble" ]; then + _hubble +fi |