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# Copyright 1999-2012 Gentoo Foundation
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# Distributed under the terms of the GNU General Public License v2
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# $Header: /var/cvsroot/gentoo-x86/eclass/l10n.eclass,v 1.1 2012/07/23 12:44:06 yngwin Exp $
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# @ECLASS: l10n.eclass
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# @MAINTAINER:
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# Ben de Groot <yngwin@gentoo.org>
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# @BLURB: convenience functions to handle localizations
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# @DESCRIPTION:
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# The l10n (localization) eclass offers a number of functions to more
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# conveniently handle localizations (translations) offered by packages.
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# These are meant to prevent code duplication for such boring tasks as
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# determining the cross-section between the user's set LINGUAS and what
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# is offered by the package; and generating the right list of linguas_*
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# USE flags.
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# @ECLASS-VARIABLE: PLOCALES
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# @DEFAULT_UNSET
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# @DESCRIPTION:
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# Variable listing the locales for which localizations are offered by
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# the package. Check profiles/desc/linguas.desc to see if the locales
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# are listed there. Add any missing ones there.
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#
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# Example: PLOCALES="cy de el_GR en_US pt_BR vi zh_CN"
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# @ECLASS-VARIABLE: PLOCALE_BACKUP
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# @DEFAULT_UNSET
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# @DESCRIPTION:
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# In some cases the package fails when none of the offered PLOCALES are
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# selected by the user. In that case this variable should be set to a
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# default locale (usually 'en' or 'en_US') as backup.
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#
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# Example: PLOCALE_BACKUP="en_US"
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# Add linguas useflags
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for u in ${PLOCALES}; do
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IUSE+=" linguas_${u}"
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done
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# @FUNCTION: l10n_for_each_locale_do
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# @USAGE: <function>
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# @DESCRIPTION:
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# Convenience function for processing localizations. The parameter should
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# be a function (defined in the consuming eclass or ebuild) which takes
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# an individual localization as (last) parameter.
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#
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# Example: l10n_for_each_locale_do install_locale
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l10n_for_each_locale_do() {
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local locs x
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locs=$(l10n_get_locales)
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for x in ${locs}; do
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"${@}" ${x} || die "failed to process enabled ${x} locale"
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done
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}
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# @FUNCTION: l10n_for_each_disabled_locale_do
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# @USAGE: <function>
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# @DESCRIPTION:
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# Complementary to l10n_for_each_locale_do, this function will process
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# locales that are disabled. This could be used for example to remove
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# locales from a Makefile, to prevent them from being built needlessly.
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l10n_for_each_disabled_locale_do() {
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local locs x
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locs=$(l10n_get_locales disabled)
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for x in ${locs}; do
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"${@}" ${x} || die "failed to process disabled ${x} locale"
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done
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}
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# @FUNCTION: l10n_find_plocales_changes
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# @USAGE: <translations dir> <filename pre pattern> <filename post pattern>
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# @DESCRIPTION:
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# Ebuild maintenance helper function to find changes in package offered
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# locales when doing a version bump. This could be added for example to
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# src_prepare
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#
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# Example: l10n_find_plocales_changes "${S}/src/translations" "${PN}_" '.ts'
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l10n_find_plocales_changes() {
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[[ $# -ne 3 ]] && die "Exactly 3 arguments are needed!"
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einfo "Looking in ${1} for new locales ..."
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pushd "${1}" >/dev/null || die "Cannot access ${1}"
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local current= x=
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for x in ${2}*${3} ; do
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x=${x#"${2}"}
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x=${x%"${3}"}
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current+="${x} "
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done
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popd >/dev/null
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if [[ ${PLOCALES} != ${current%[[:space:]]} ]] ; then
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einfo "There are changes in locales! This ebuild should be updated to:"
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einfo "PLOCALES=\"${current%[[:space:]]}\""
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else
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einfo "Done"
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fi
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}
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# @FUNCTION: l10n_get_locales
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# @USAGE: [disabled]
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# @DESCRIPTION:
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# Determine which LINGUAS USE flags the user has enabled that are offered
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# by the package, as listed in PLOCALES, and return them. In case no locales
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# are selected, fall back on PLOCALE_BACKUP. When the disabled argument is
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# given, return the disabled useflags instead of the enabled ones.
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l10n_get_locales() {
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local disabled_locales enabled_locales loc locs
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for loc in ${PLOCALES}; do
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if use linguas_${loc}; then
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enabled_locales+="${loc} "
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else
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disabled_locales+="${loc} "
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fi
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done
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if [[ ${1} == disabled ]]; then
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locs=${disabled_locales}
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else
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locs=${enabled_locales:-$PLOCALE_BACKUP}
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fi
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printf "%s" "${locs}"
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}
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