#!/bin/sh
######################################################
#
# Test encoding headers according to RFC 2047
#
######################################################

set -e

if test -z "${MH_OBJ_DIR}"; then
    srcdir=`dirname "$0"`/../..
    MH_OBJ_DIR=`cd "$srcdir" && pwd`; export MH_OBJ_DIR
fi

. "${MH_OBJ_DIR}/test/common.sh"

setup_test
testname="${MH_TEST_DIR}/$$"

#
# We're going to hardcode UTF-8 for this test.
#

LC_ALL=en_US.UTF-8; export LC_ALL

#
# Basic test of encoding a short subject
#
cat > "${testname}.basic.actual" <<EOF
From: Mr Foo Bar <foobar@example.com>
To: Somebody <somebody@example.com>
Subject: This is ä test

This is a test
EOF

cat > "${testname}.basic.expected" <<EOF
From: Mr Foo Bar <foobar@example.com>
To: Somebody <somebody@example.com>
Subject: =?UTF-8?Q?This_is_=C3=A4_test?=
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"

This is a test
EOF

mhbuild "${testname}.basic.actual"

check "${testname}.basic.actual" "${testname}.basic.expected" 'keep first'

#
# Make sure we can undo the encoding
#

run_test 'eval fmttest -outsize max -format "%(decode{subject})" -message -file "${testname}.basic.actual"' 'This is ä test'

rm -f "${testname}.basic.actual"

#
# Basic test of encoding a short subject, but with base64
#
cat > "${testname}.basic.actual" <<EOF
From: Mr Foo Bar <foobar@example.com>
To: Somebody <somebody@example.com>
Subject: This is ä test

This is a test
EOF

cat > "${testname}.basic.expected" <<EOF
From: Mr Foo Bar <foobar@example.com>
To: Somebody <somebody@example.com>
Subject: =?UTF-8?B?VGhpcyBpcyDDpCB0ZXN0?=
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"

This is a test
EOF

mhbuild -headerencoding base64 "${testname}.basic.actual"

check "${testname}.basic.actual" "${testname}.basic.expected" 'keep first'

run_test 'eval fmttest -outsize max -format "%(decode{subject})" -message -file "${testname}.basic.actual"' 'This is ä test'

rm -f "${testname}.basic.actual"

#
# Have a subject that will pick base64 as the shorter encoding
#

cat > "${testname}.autopick.actual" <<EOF
From: Mr Foo Bar <foobar@example.com>
To: Somebody <somebody@example.com>
Subject: This is ä tëst©

This is a test
EOF

cat > "${testname}.autopick.expected" <<EOF
From: Mr Foo Bar <foobar@example.com>
To: Somebody <somebody@example.com>
Subject: =?UTF-8?B?VGhpcyBpcyDDpCB0w6tzdMKp?=
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"

This is a test
EOF

mhbuild "${testname}.autopick.actual"

check "${testname}.autopick.actual" "${testname}.autopick.expected" 'keep first'

run_test 'eval fmttest -outsize max -format "%(decode{subject})" -message -file "${testname}.autopick.actual"' 'This is ä tëst©'

rm -f "${testname}.basic.autopick"

#
# Tests using longer subject lines.
#

cat > "${testname}.longsubject1.actual" <<EOF
From: Mr Foo Bar <foobar@example.com>
To: Somebody <somebody@example.com>
Subject: This is ä tëst of a rather long sübject line; will it overflow
  the line length?  I sure hope thät ='s and "'s are encoded properly.  Will
  they be?

This is a test of a very long subject line.
EOF

cat > "${testname}.longsubject1.expected" <<EOF
From: Mr Foo Bar <foobar@example.com>
To: Somebody <somebody@example.com>
Subject: =?UTF-8?Q?This_is_=C3=A4_t=C3=ABst_of_a_rather_long_s=C3=BCbject_?=
         =?UTF-8?Q?line;_will_it_overflow_the_line_length=3F__I_sure_hope_?=
         =?UTF-8?Q?th=C3=A4t_=3D's_and_"'s_are_encoded_properly.__Will_the?=
         =?UTF-8?Q?y_be=3F?=
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"

This is a test of a very long subject line.
EOF

mhbuild "${testname}.longsubject1.actual"

check "${testname}.longsubject1.actual" "${testname}.longsubject1.expected" 'keep first'

run_test 'eval fmttest -outsize max -format "%(putlit(decode(trim{subject})))" -message -file "${testname}.longsubject1.actual"' "This is ä tëst of a rather long sübject line; will it overflow the line length?  I sure hope thät ='s and \"'s are encoded properly.  Will they be?"

rm -f "${testname}.longsubject1.actual"

#
# Test a longer line with base64 encoding
#

cat > "${testname}.longsubject2.actual" <<EOF
From: Mr Foo Bar <foobar@example.com>
To: Somebody <somebody@example.com>
Subject: This is ä tëst øf ä räthër løng sübjëct line; will it øvërfløw
  the line length?  I sure hope thät ='s and "'s are encoded properly.  Will
  they be?

This is a test of a very long subject line using base64.
EOF

cat > "${testname}.longsubject2.expected" <<EOF
From: Mr Foo Bar <foobar@example.com>
To: Somebody <somebody@example.com>
Subject: =?UTF-8?B?VGhpcyBpcyDDpCB0w6tzdCDDuGYgw6QgcsOkdGjDq3IgbMO4bmcg?=
         =?UTF-8?B?c8O8YmrDq2N0IGxpbmU7IHdpbGwgaXQgw7h2w6tyZmzDuHcgdGhl?=
         =?UTF-8?B?IGxpbmUgbGVuZ3RoPyAgSSBzdXJlIGhvcGUgdGjDpHQgPSdzIGFu?=
         =?UTF-8?B?ZCAiJ3MgYXJlIGVuY29kZWQgcHJvcGVybHkuICBXaWxsIHRoZXkg?=
         =?UTF-8?B?YmU/?=
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"

This is a test of a very long subject line using base64.
EOF

mhbuild "${testname}.longsubject2.actual"

check "${testname}.longsubject2.actual" "${testname}.longsubject2.expected" 'keep first'

run_test 'eval fmttest -outsize max -format "%(putlit(decode(trim{subject})))" -message -file "${testname}.longsubject2.actual"' "This is ä tëst øf ä räthër løng sübjëct line; will it øvërfløw the line length?  I sure hope thät ='s and \"'s are encoded properly.  Will they be?"

exit ${failed:-0}