git/t/t0201-gettext-fallbacks.sh
Ævar Arnfjörð Bjarmason ba67aaf2d0 git-sh-i18n--envsubst: our own envsubst(1) for eval_gettext()
Add a git-sh-i18n--envsubst program which is a stripped-down version
of the GNU envsubst(1) program that comes with GNU gettext for use in
the eval_gettext() fallback.

We need a C helper program because implementing eval_gettext() purely
in shell turned out to be unworkable. Digging through the Git mailing
list archives will reveal two shell implementations of eval_gettext
that are almost good enough, but fail on an edge case which is tested
for in the tests which are part of this patch.

These are the modifications I made to envsubst.c as I turned it into
sh-i18n--envsubst.c:

 * Added our git-compat-util.h header for xrealloc() and friends.

 * Removed inclusion of gettext-specific headers.

 * Removed most of main() and replaced it with my own. The modified
   version only does option parsing for --variables. That's all it
   needs.

 * Modified error() invocations to use our error() instead of
   error(3).

 * Replaced the gettext XNMALLOC(n, size) macro with just
   xmalloc(n). Since XNMALLOC() only allocated char's.

 * Removed the string_list_destroy function. It's redundant (also in
   the upstream code).

 * Replaced the use of stdbool.h (a C99 header) by doing the following
   replacements on the code:

    * s/bool/unsigned short int/g
    * s/true/1/g
    * s/false/0/g

Reported-by: Johannes Sixt <j.sixt@viscovery.net>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-05-14 20:29:05 -07:00

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#!/bin/sh
#
# Copyright (c) 2010 Ævar Arnfjörð Bjarmason
#
test_description='Gettext Shell fallbacks'
. ./test-lib.sh
. "$GIT_BUILD_DIR"/git-sh-i18n
test_expect_success 'gettext: our gettext() fallback has pass-through semantics' '
printf "test" >expect &&
gettext "test" >actual &&
test_i18ncmp expect actual &&
printf "test more words" >expect &&
gettext "test more words" >actual &&
test_i18ncmp expect actual
'
test_expect_success 'eval_gettext: our eval_gettext() fallback has pass-through semantics' '
printf "test" >expect &&
eval_gettext "test" >actual &&
test_i18ncmp expect actual &&
printf "test more words" >expect &&
eval_gettext "test more words" >actual &&
test_i18ncmp expect actual
'
test_expect_success 'eval_gettext: our eval_gettext() fallback can interpolate variables' '
printf "test YesPlease" >expect &&
GIT_INTERNAL_GETTEXT_TEST_FALLBACKS=YesPlease eval_gettext "test \$GIT_INTERNAL_GETTEXT_TEST_FALLBACKS" >actual &&
test_i18ncmp expect actual
'
test_expect_success 'eval_gettext: our eval_gettext() fallback can interpolate variables with spaces' '
cmdline="git am" &&
export cmdline;
printf "When you have resolved this problem run git am --resolved." >expect &&
eval_gettext "When you have resolved this problem run \$cmdline --resolved." >actual
test_i18ncmp expect actual
'
test_expect_success 'eval_gettext: our eval_gettext() fallback can interpolate variables with spaces and quotes' '
cmdline="git am" &&
export cmdline;
printf "When you have resolved this problem run \"git am --resolved\"." >expect &&
eval_gettext "When you have resolved this problem run \"\$cmdline --resolved\"." >actual
test_i18ncmp expect actual
'
test_done