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authorTobias Klauser <tklauser@distanz.ch>2021-03-25 16:29:17 +0100
committerTobias Klauser <tklauser@distanz.ch>2021-03-25 16:29:17 +0100
commit1fbd28e69b61998163e5066369ea637044c44ccd (patch)
tree88e001fb89b32fad3ab1352ed8a778da58ae9be2
parentfb772c148d14bdd441ad07d0197789e8a30a36f8 (diff)
completion: add cilium-cli
-rw-r--r--.zsh/completion/_cilium.zsh159
1 files changed, 159 insertions, 0 deletions
diff --git a/.zsh/completion/_cilium.zsh b/.zsh/completion/_cilium.zsh
new file mode 100644
index 0000000..3f9047c
--- /dev/null
+++ b/.zsh/completion/_cilium.zsh
@@ -0,0 +1,159 @@
+#compdef _cilium cilium
+
+# zsh completion for cilium -*- shell-script -*-
+
+__cilium_debug()
+{
+ local file="$BASH_COMP_DEBUG_FILE"
+ if [[ -n ${file} ]]; then
+ echo "$*" >> "${file}"
+ fi
+}
+
+_cilium()
+{
+ 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
+
+ __cilium_debug "\n========= starting completion logic =========="
+ __cilium_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]}")
+ __cilium_debug "Truncated words[*]: ${words[*]},"
+
+ lastParam=${words[-1]}
+ lastChar=${lastParam[-1]}
+ __cilium_debug "lastParam: ${lastParam}, lastChar: ${lastChar}"
+
+ # For zsh, when completing a flag with an = (e.g., cilium -n=<TAB>)
+ # completions must be prefixed with the flag
+ setopt local_options BASH_REMATCH
+ if [[ "${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.
+ __cilium_debug "Adding extra empty parameter"
+ requestComp="${requestComp} \"\""
+ fi
+
+ __cilium_debug "About to call: eval ${requestComp}"
+
+ # Use eval to handle any environment variables and such
+ out=$(eval ${requestComp} 2>/dev/null)
+ __cilium_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[@]}")
+ __cilium_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.
+ __cilium_debug "No directive found. Setting do default"
+ directive=0
+ fi
+
+ __cilium_debug "directive: ${directive}"
+ __cilium_debug "completions: ${out}"
+ __cilium_debug "flagPrefix: ${flagPrefix}"
+
+ if [ $((directive & shellCompDirectiveError)) -ne 0 ]; then
+ __cilium_debug "Completion received error. Ignoring completions."
+ return
+ fi
+
+ compCount=0
+ while IFS='\n' read -r comp; do
+ if [ -n "$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++))
+ __cilium_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}"
+
+ __cilium_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
+ __cilium_debug "Listing directories in $subdir"
+ pushd "${subdir}" >/dev/null 2>&1
+ else
+ __cilium_debug "Listing directories in ."
+ fi
+
+ _arguments '*:dirname:_files -/'" ${flagPrefix}"
+ if [ -n "$subdir" ]; then
+ popd >/dev/null 2>&1
+ fi
+ elif [ $((directive & shellCompDirectiveNoSpace)) -ne 0 ] && [ ${compCount} -eq 1 ]; then
+ __cilium_debug "Activating nospace."
+ # We can use compadd here as there is no description when
+ # there is only one completion.
+ compadd -S '' "${lastComp}"
+ elif [ ${compCount} -eq 0 ]; then
+ if [ $((directive & shellCompDirectiveNoFileComp)) -ne 0 ]; then
+ __cilium_debug "deactivating file completion"
+ else
+ # Perform file completion
+ __cilium_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]" = "_cilium" ]; then
+ _cilium
+fi