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git/git-sh-i18n.sh
Junio C Hamano 42f16113ee git-sh-i18n: restructure the logic to compute gettext.sh scheme
Instead of having a single long and complex chain of commands to decide
what to do and carry out the decision, split the code so that we first
decide which scheme to use, and in the second section define what exactly
is done by the chosen scheme. It makes the code much easier to follow and
update.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-23 14:07:43 -08:00

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#!/bin/sh
#
# Copyright (c) 2010 Ævar Arnfjörð Bjarmason
#
# This is Git's interface to gettext.sh. See po/README for usage
# instructions.
# Export the TEXTDOMAIN* data that we need for Git
TEXTDOMAIN=git
export TEXTDOMAIN
if test -z "$GIT_TEXTDOMAINDIR"
then
TEXTDOMAINDIR="@@LOCALEDIR@@"
else
TEXTDOMAINDIR="$GIT_TEXTDOMAINDIR"
fi
export TEXTDOMAINDIR
# First decide what scheme to use...
GIT_INTERNAL_GETTEXT_SH_SCHEME=fallthrough
if test -n "$GIT_INTERNAL_GETTEXT_TEST_FALLBACKS"
then
: no probing necessary
elif test -n "$GIT_GETTEXT_POISON"
then
GIT_INTERNAL_GETTEXT_SH_SCHEME=poison
elif type gettext.sh >/dev/null 2>&1
then
# GNU libintl's gettext.sh
GIT_INTERNAL_GETTEXT_SH_SCHEME=gnu
elif test "$(gettext -h 2>&1)" = "-h"
then
# gettext binary exists but no gettext.sh. likely to be a gettext
# binary on a Solaris or something that is not GNU libintl and
# lack eval_gettext.
GIT_INTERNAL_GETTEXT_SH_SCHEME=gettext_without_eval_gettext
fi
export GIT_INTERNAL_GETTEXT_SH_SCHEME
# ... and then follow that decision.
case "$GIT_INTERNAL_GETTEXT_SH_SCHEME" in
gnu)
# Use libintl's gettext.sh, or fall back to English if we can't.
. gettext.sh
;;
gettext_without_eval_gettext)
# Solaris has a gettext(1) but no eval_gettext(1)
eval_gettext () {
gettext "$1" | (
export PATH $(git sh-i18n--envsubst --variables "$1");
git sh-i18n--envsubst "$1"
)
}
;;
poison)
# Emit garbage so that tests that incorrectly rely on translatable
# strings will fail.
gettext () {
printf "%s" "# GETTEXT POISON #"
}
eval_gettext () {
printf "%s" "# GETTEXT POISON #"
}
;;
*)
gettext () {
printf "%s" "$1"
}
eval_gettext () {
printf "%s" "$1" | (
export PATH $(git sh-i18n--envsubst --variables "$1");
git sh-i18n--envsubst "$1"
)
}
;;
esac
# Git-specific wrapper functions
gettextln () {
gettext "$1"
echo
}
eval_gettextln () {
eval_gettext "$1"
echo
}