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# Copyright 1999-2012 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
DESCRIPTION="Manage Ruby symlinks"
MAINTAINER="a3li@gentoo.org"
SVN_DATE="20120105"
VERSION="20120105"
bindir=/usr/bin
man1dir=/usr/share/man/man1
find_targets() {
for t in ${EROOT}${bindir}/${1:-ruby}{18,19,20,ee18} ; do
[[ -e $t ]] || continue
echo ${t}
done
}
check_target() {
local target=${1} targets
targets=( $(find_targets ) )
# number from the list
if is_number ${target} && [[ ${target} -ge 1 ]] ; then
if [[ ${target} -gt ${#targets[@]} ]] ; then
target="invalid"
elif [[ -e "${targets[$(( ${target} - 1 ))]}" ]] ; then
target=$(basename ${targets[$((${target} - 1 ))]} )
else
write_warning_msg ${targets[$((${target} - 1 ))]}
target="invalid"
fi
# `rubyXX' string
else
[[ -e "${EROOT}${bindir}/${target}" ]] || \
target="invalid"
fi
echo ${target}
}
remove_symlinks() {
rm -f ${EROOT}${bindir}/{ruby,gem,irb,erb,ri,rdoc,testrb} && \
rm -f ${EROOT}${man1dir}/ruby.{1,1.gz,1.bz2,1.lzma}
}
create_man_symlinks() {
local version=${1}
for m in ${EROOT}${man1dir}/ruby${version}.{1,1.gz,1.bz2,1.lzma}
do
if [[ -e ${m} ]] ; then
break
fi
done
ln -s "${m}" "${m/ruby${version}/ruby}" || \
write_error_msg "Could not set man symlink"
}
create_symlinks() {
local target=${1} version
version=${target##*ruby}
local path="${EROOT}${bindir}/"
# these have to work
for f in "ruby" "irb" "erb" "ri" "testrb" "rdoc" ; do
ln -s "${f}${version}" "${path}${f}" || \
die -q "Could not set ${f} symlink"
done
# these can fail
if [[ -e "${path}gem${version}" ]] ; then
ln -s "gem${version}" "${path}gem" || \
die -q "Could not set gem symlink"
else
write_warning_msg "Could not set gem symlink"
echo "It appears you do not have RubyGems installed for this profile."
echo "If you need RubyGems, emerge dev-ruby/rubygems with the appropriate RUBY_TARGETS setting."
echo
fi
[[ $(portageq envvar FEATURES) =~ noman ]] || create_man_symlinks ${version}
write_list_start "Successfully switched to profile:"
write_kv_list_entry "${target}" ""
}
### show action ###
describe_show() {
echo "Prints the current configuration."
}
do_show() {
[[ -z "${@}" ]] || die -q "This function does not expect any arguments"
local rb=""
write_list_start "Current Ruby version:"
if [[ -L "${EROOT}${bindir}/ruby" ]] ; then
rb=$(basename $(canonicalise ${EROOT}${bindir}/ruby ) )
write_kv_list_entry $rb ""
elif [[ -e "${EROOT}${bindir}/ruby" ]] ; then
write_warning_msg "${bindir}/ruby is a SLOT incompatible version."
write_kv_list_entry "$(basename $(canonicalise ${EROOT}${bindir}/ruby ) )" ""
else
write_kv_list_entry "(none)"
return 1
fi
write_list_start "Current Rubygems version:"
if [[ -L "${EROOT}${bindir}/gem" ]] ; then
write_kv_list_entry "$(basename $(canonicalise ${EROOT}${bindir}/gem ) )" ""
elif [[ -e "${EROOT}${bindir}/gem" ]] ; then
write_warning_msg "${bindir}/gem is a SLOT incompatible version."
write_kv_list_entry "$(basename $(canonicalise ${EROOT}${bindir}/gem) )" ""
else
write_kv_list_entry "gem??" "(not found)"
fi
}
### list action ###
describe_list() {
echo "Lists available Ruby profiles."
}
do_list() {
write_list_start "Available Ruby profiles:"
local targets=( $(find_targets) )
local i line
for (( i = 0; i < ${#targets[@]}; i++ )) ; do
line=$(basename "${targets[i]}")
# Do we have a matching rubygems?
if [[ -e ${targets[i]/ruby/gem} ]] ; then
line="${line} (with Rubygems)"
fi
# find out the current version
if [[ ${targets[i]} = $(canonicalise "${EROOT}${bindir}/ruby") ]] ; then
targets[i]=$(highlight_marker "${line}")
else
targets[i]=${line}
fi
done
write_numbered_list -m "(none found)" "${targets[@]}"
}
### set action ###
describe_set() {
echo "Switches to a ruby profile."
}
describe_set_options() {
echo "target : Target name or number (from 'list' action)"
}
describe_set_parameters() {
echo "<target>"
}
do_set() {
[[ -z ${@} ]] && die -q "Parameter expected."
local target=$(check_target ${1})
[[ $target = "invalid" ]] && die -q "Can't use that profile. No suitable Ruby interpreter found."
remove_symlinks || \
die -q "Could not remove symlinks"
create_symlinks ${target}
}
### cleanup action ###
describe_cleanup() {
echo "This action is not to be called manually."
}
do_cleanup() {
[[ -z ${@} ]] || die -q "This function does not expect any arguments"
# Do we need to clean up?
if [[ -e "${EROOT}${bindir}"/$(readlink "${EROOT}${bindir}/ruby") ]]; then
echo "Nothing to clean up."
return
fi
local targets=( $(find_targets) )
remove_symlinks || \
die -q "Could not remove symlinks"
if [[ ${#targets[@]} -ne 0 ]] ; then
echo "Marking the latest still installed version as default..."
create_symlinks $(basename ${targets[@]: -1})
else
echo "No ruby profiles left on the system. Stale symlinks removed."
fi
}
|
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