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Merge pull request #139 from Mashimiao/add-bash-completion
Add bash-completion for oci-image-tool
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‎Makefile‎

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@@ -48,7 +48,7 @@ install: man
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install -d -m 755 $(PREFIX)/share/man/man1
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install -m 644 *.1 $(PREFIX)/share/man/man1
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install -d -m 755 $(PREFIX)/share/bash-completion/completions
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install -m 644 completions/bash/oci-image-tool $(PREFIX)/share/bash-completion/completionsn
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install -m 644 completions/bash/oci-image-tool $(PREFIX)/share/bash-completion/completions
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uninstall:
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rm -f $(BINDIR)/oci-image-tool

‎completions/bash/oci-image-tool‎

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#!/bin/bash
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#
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# bash completion file for core oci-image-tool commands
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#
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# This script provides completion of:
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# - commands and their options
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# - filepaths
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#
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# To enable the completions either:
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# - place this file in /usr/share/bash-completion/completions
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# or
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# - copy this file to e.g. ~/.oci-image-tool-completion.sh and add the line
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# below to your .bashrc after bash completion features are loaded
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# . ~/.oci-image-tool-completion.sh
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#
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# Configuration:
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#
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# Note for developers:
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# Please arrange options sorted alphabetically by long name with the short
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# options immediately following their corresponding long form.
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# This order should be applied to lists, alternatives and code blocks.
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__oci-image-tool_previous_extglob_setting=$(shopt -p extglob)
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shopt -s extglob
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__oci-image-tool_pos_first_nonflag() {
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local argument_flags=$1
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local counter=$((${subcommand_pos:-${command_pos}} + 1))
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while [ $counter -le $cword ]; do
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if [ -n "$argument_flags" ] && eval "case '${words[$counter]}' in $argument_flags) true ;; *) false ;; esac"; then
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(( counter++ ))
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else
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case "${words[$counter]}" in
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-*)
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;;
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*)
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break
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;;
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esac
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fi
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(( counter++ ))
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done
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echo $counter
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}
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# Transforms a multiline list of strings into a single line string
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# with the words separated by "|".
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# This is used to prepare arguments to __oci-image-tool_pos_first_nonflag().
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__oci-image-tool_to_alternatives() {
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local parts=( $1 )
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local IFS='|'
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echo "${parts[*]}"
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}
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# Transforms a multiline list of options into an extglob pattern
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# suitable for use in case statements.
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__oci-image-tool_to_extglob() {
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local extglob=$( __oci-image-tool_to_alternatives "$1" )
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echo "@($extglob)"
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}
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# Subcommand processing.
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# Locates the first occurrence of any of the subcommands contained in the
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# first argument. In case of a match, calls the corresponding completion
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# function and returns 0.
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# If no match is found, 1 is returned. The calling function can then
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# continue processing its completion.
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#
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# TODO if the preceding command has options that accept arguments and an
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# argument is equal ot one of the subcommands, this is falsely detected as
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# a match.
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__oci-image-tool_subcommands() {
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local subcommands="$1"
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local counter=$(($command_pos + 1))
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while [ $counter -lt $cword ]; do
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case "${words[$counter]}" in
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$(__oci-image-tool_to_extglob "$subcommands") )
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subcommand_pos=$counter
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local subcommand=${words[$counter]}
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local completions_func=_oci-image-tool_${command}_${subcommand}
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declare -F $completions_func >/dev/null && $completions_func
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return 0
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;;
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esac
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(( counter++ ))
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done
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return 1
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}
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# suppress trailing whitespace
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__oci-image-tool_nospace() {
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# compopt is not available in ancient bash versions
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type compopt &>/dev/null && compopt -o nospace
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}
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__oci-image-tool_complete_common_types() {
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# The list of types, ALL was added manually.
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COMPREPLY=( $( compgen -W "
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image
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imageLayout
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" -- "$cur" ) )
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}
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__oci-image-tool_complete_validate_types() {
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# The list of types, ALL was added manually.
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COMPREPLY=( $( compgen -W "
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config
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image
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imageIndex
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imageLayout
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manifest
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" -- "$cur" ) )
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}
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# global options that may appear after the oci-image-tool command
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_oci-image-tool_oci-image-tool() {
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local boolean_options="
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--debug
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--help -h
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--version -v
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"
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local all_options="$boolean_options"
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case "$cur" in
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-*)
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COMPREPLY=( $( compgen -W "$all_options" -- "$cur" ) )
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;;
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*)
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local counter=$( __oci-image-tool_pos_first_nonflag )
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if [ $cword -eq $counter ]; then
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COMPREPLY=( $( compgen -W "${commands[*]} help" -- "$cur" ) )
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fi
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;;
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esac
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}
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_oci-image-tool_create() {
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case "$prev" in
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--type)
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__oci-image-tool_complete_common_types
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return
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;;
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esac
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case "$cur" in
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-*)
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COMPREPLY=( $( compgen -W "--type --ref --rootfs --help -h" -- "$cur" ) )
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;;
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esac
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}
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_oci-image-tool_unpack() {
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case "$prev" in
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--type)
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__oci-image-tool_complete_common_types
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return
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;;
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esac
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case "$cur" in
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-*)
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COMPREPLY=( $( compgen -W "--type --ref --help -h" -- "$cur" ) )
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;;
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esac
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}
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_oci-image-tool_validate() {
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case "$prev" in
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--type)
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__oci-image-tool_complete_validate_types
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return
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;;
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esac
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case "$cur" in
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-*)
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COMPREPLY=( $( compgen -W "--type --ref --help -h" -- "$cur" ) )
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;;
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esac
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}
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_oci-image-tool_help() {
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local counter=$(__oci-image-tool_pos_first_nonflag)
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if [ $cword -eq $counter ]; then
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COMPREPLY=( $( compgen -W "${commands[*]}" -- "$cur" ) )
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fi
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}
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_oci-image-tool() {
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local previous_extglob_setting=$(shopt -p extglob)
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shopt -s extglob
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local commands=(
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create
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validate
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unpack
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)
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COMPREPLY=()
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local cur prev words cword
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_get_comp_words_by_ref -n : cur prev words cword
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local command='oci-image-tool' command_pos=0 subcommand_pos
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local counter=1
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while [ $counter -lt $cword ]; do
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case "${words[$counter]}" in
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-*)
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;;
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=)
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(( counter++ ))
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;;
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*)
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command="${words[$counter]}"
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command_pos=$counter
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break
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;;
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esac
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(( counter++ ))
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done
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local completions_func=_oci-image-tool_${command}
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declare -F $completions_func >/dev/null && $completions_func
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eval "$previous_extglob_setting"
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return 0
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}
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eval "$__oci-image-tool_previous_extglob_setting"
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unset __oci-image-tool_previous_extglob_setting
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complete -F _oci-image-tool oci-image-tool

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