bash-completion: Add initial draft

partup-completion.bash

@@ -0,0 +1,122 @@
+#/usr/bin/env bash
+
+partup_commands="install package show version"
+help_options="-h --help"
+app_options="-q --quiet -d --debug -D --debug-domains"
+install_options="-s --skip-checksums"
+package_options="-f --force -C, --directory"
+show_options="-s --size"
+
+function exists_in_list()
+{
+	LIST=$1
+	DELIMITER=$2
+	VALUE=$3
+	[[ "$LIST" =~ ($DELIMITER|^)$VALUE($DELIMITER|$) ]]
+}
+
+function add_command_help()
+{
+	if [[ ${previous} == ${command} ]] ; then
+		# only add help if we are first after command
+		COMPREPLY+=( $(compgen -W "${help_options}" -- ${current}) )
+	fi
+	if exists_in_list "${help_options}" " " "${previous}" ; then
+		# if we have choosen help option, nothing should follow
+		return 0
+	fi
+}
+
+
+_partup_completions()
+{
+	local current=""
+	local previous=""
+	local command=""
+
+	if [[ ${COMP_CWORD} > 0 ]] ; then
+		current="${COMP_WORDS[COMP_CWORD]}"
+
+		if [[ ${COMP_CWORD} > 1 ]] ; then
+			# iterate over all COMP_WORDS
+			for s in "${COMP_WORDS[@]:1}"; do
+				if exists_in_list "${partup_commands}" " " "${s}" ; then
+					command="${s}"
+				fi
+				((i++))
+			done
+			previous="${COMP_WORDS[COMP_CWORD - 1]}"
+		fi
+	fi
+
+	if [[ -z ${command} ]] ; then
+		COMPREPLY=( $(compgen -W "${help_options} ${partup_commands} ${app_options}"  -- ${current}) )
+		return 0
+	fi
+
+	# we may have things like "partup --debug install ..."
+
+	if [[ ${command} == install ]] ; then
+		add_command_help ${command} ${current} ${previous}
+
+		COMPREPLY+=( $(compgen -W "${install_options} ${app_options}" -- ${current}) )
+
+		# PACKAGE
+		COMPREPLY+=( $(compgen -f -o plusdirs -X '!*.partup' -- ${current}) )
+
+		# DEVICE -> if previous ends with partup, complete only from /dev
+		if [[ ${previous} == *.partup ]] ; then
+			if [[ -z ${current} ]] ; then
+				COMPREPLY=( '/dev' )
+				return 0
+			else
+				COMPREPLY+=( $(compgen -f -o plusdirs -- ${current} ) )
+			fi
+		fi
+
+		# don't allow options after dev
+		if [[ ${previous} == /dev/* ]] ; then
+			COMPREPLY=()
+		fi
+
+		return 0
+	fi
+
+	if [[ ${command} == package ]] ; then
+		add_command_help ${command} ${current} ${previous}
+
+		COMPREPLY+=( $(compgen -W "${package_options} ${app_options}" -- ${current}) )
+
+		# -C, --directory=DIR
+		# PACKAGE FILES…
+
+		if exists_in_list "${package_options}" " " ${previous} ; then
+			#if output is previous, a file must follow
+			COMPREPLY=( $(compgen -f -- ${current}) )
+		fi
+
+		return 0
+	fi
+
+	if [[ ${command} == show ]] ; then
+		add_command_help ${command} ${current} ${previous}
+
+		COMPREPLY+=( $(compgen -W "${show_options} ${app_options}" -- ${current}) )
+
+		# PACKAGE - if we do not already have one, complete available partup files
+		if [[ ${previous} != *.partup ]] ; then			
+			COMPREPLY+=( $(compgen -f -o plusdirs -X '!*.partup' -- ${current}) )
+		fi
+
+		return 0
+	fi
+
+	if [[ ${command} == version ]] ; then
+		COMPREPLY=()
+		return 0
+	fi
+
+	return 1
+}
+
+complete -o filenames -F _partup_completions partup