Initial attempt at new bashcomp module

bashcomp.eselect (text/plain), 3.04 KB, created by Michał Górny on 2014-08-24 08:54:17 UTC

# -*-eselect-*-  vim: ft=eselect
# Copyright 2005-2013 Gentoo Foundation
# Distributed under the terms of the GNU GPL version 2 or later

DESCRIPTION="Manage contributed bash-completion scripts"
MAINTAINER="[e-mail]"

COMPLETIONS_DIR=${EROOT%/}/usr/share/bash-completion/completions
COMPLETIONS_BLACKLIST=${EROOT%}/etc/bash/completion.blacklist

find_targets() {
	local bc

	# Note: safe to cd, we're in a subshell
	cd "${COMPLETIONS_DIR}" || die
	for bc in *; do
		[[ -f ${bc} && ${bc} != *~ ]] && echo "${bc}"
	done | sort -u
}

is_enabled() {
	! grep -q -s "^${1}$" "${COMPLETIONS_BLACKLIST}"
}

post_update() {
	# adjust permissions if necessary
	chmod a+r "${COMPLETIONS_BLACKLIST}" || die

	echo "For the changes to apply to open shells, you may need to run:"
	echo "  complete -r ${*}"
	echo "in each of them."
}

### list action ###

describe_list() {
	echo "List available completions"
}

do_list() {
	local targets i
	targets=( $(find_targets) )

	for (( i = 0; i < ${#targets[@]}; i++ )); do
		is_enabled ${opts} "${targets[i]}" \
			&& targets[i]=$(highlight_marker "${targets[i]}")
	done

	write_list_start "Available completions:"
	write_numbered_list -m "(none found)" "${targets[@]}"
}

### enable action ###

describe_enable() {
	echo "Enable specified completion(s)"
}

describe_enable_parameters() {
	echo "<target>"
}

describe_enable_options() {
	echo "<target> : Target name or number (from 'list' action)"
}

do_enable() {
	[[ $# -eq 0 ]] && die -q "You didn't specify any completions to enable."

	local bc target targets=( $(find_targets) ) changed=()

	for bc; do
		target=${bc}
		is_number "${target}" && target=${targets[target-1]}

		[[ -z ${target} || ${target} == */* ]] \
			&& die -q "Target \"${bc}\" doesn't appear to be valid!"

		bc=${target}

		# not on blacklist?
		if is_enabled "${bc}"; then
			# does it exist?
			if ! has "${bc}" "${targets[@]}"; then
				write_error_msg "${bc} doesn't exist"
				continue
			fi

			write_warning_msg "${bc} is not disabled"
			continue
		fi

		# enable it
		sed -i -e "/^${bc}$/d" "${COMPLETIONS_BLACKLIST}" || die
		changed+=( "${bc}" )
	done

	post_update "${changed[@]}"
}

### disable action ###

describe_disable() {
	echo "Disable specified completion(s)"
}

describe_disable_parameters() {
	echo "<target>"
}

describe_disable_options() {
	echo "<target> : Target name or number (from 'list' action)"
}


do_disable() {
	[[ $# -eq 0 ]] && die -q "You didn't specify any completions to enable."

	local bc target targets=( $(find_targets) ) changes=()

	for bc; do
		target=${bc}
		is_number "${target}" && target=${targets[target-1]}

		[[ -z ${target} || ${target} == */* ]] \
			&& die -q "Target \"${bc}\" doesn't appear to be valid!"

		bc=${target}

		# already disabled?
		if ! is_enabled "${bc}"; then
			write_warning_msg "${bc} is not enabled"
			continue
		fi

		# does it exist?
		if ! has "${bc}" "${targets[@]}"; then
			write_error_msg "${bc} doesn't exist"
			continue
		fi

		# disable it
		echo "${bc}" >> "${COMPLETIONS_BLACKLIST}" || die

		changes+=( "${bc}" )
	done

	post_update "${changes[@]}"
}