#!/bin/sh
#
# Copyright (c) 2006 Junio C Hamano
#

test_description='commit and log output encodings'

. ./test-lib.sh

compare_with () {
        git show -s $1 | sed -e '1,/^$/d' -e 's/^    //' >current &&
        case "$3" in
        '')
                test_cmp "$2" current ;;
        ?*)
                iconv -f "$3" -t UTF-8 >current.utf8 <current &&
                iconv -f "$3" -t UTF-8 >expect.utf8 <"$2" &&
                test_cmp expect.utf8 current.utf8
                ;;
        esac
}

test_expect_success setup '
        : >F &&
        git add F &&
        T=$(git write-tree) &&
        C=$(git commit-tree $T <"$TEST_DIRECTORY"/t3900/1-UTF-8.txt) &&
        git update-ref HEAD $C &&
        git tag C0
'

test_expect_success 'no encoding header for base case' '
        E=$(git cat-file commit C0 | sed -ne "s/^encoding //p") &&
        test z = "z$E"
'

test_expect_failure 'UTF-16 refused because of NULs' '
        echo UTF-16 >F &&
        git commit -a -F "$TEST_DIRECTORY"/t3900/UTF-16.txt
'

test_expect_success 'UTF-8 invalid characters refused' '
        test_when_finished "rm -f $HOME/stderr $HOME/invalid" &&
        echo "UTF-8 characters" >F &&
        printf "Commit message\n\nInvalid surrogate:\355\240\200\n" \
                >"$HOME/invalid" &&
        git commit -a -F "$HOME/invalid" 2>"$HOME"/stderr &&
        grep "did not conform" "$HOME"/stderr
'

test_expect_success 'UTF-8 overlong sequences rejected' '
        test_when_finished "rm -f $HOME/stderr $HOME/invalid" &&
        rm -f "$HOME/stderr" "$HOME/invalid" &&
        echo "UTF-8 overlong" >F &&
        printf "\340\202\251ommit message\n\nThis is not a space:\300\240\n" \
                >"$HOME/invalid" &&
        git commit -a -F "$HOME/invalid" 2>"$HOME"/stderr &&
        grep "did not conform" "$HOME"/stderr
'

for H in ISO8859-1 eucJP ISO-2022-JP
do
        test_expect_success "$H setup" '
                git config i18n.commitencoding $H &&
                git checkout -b $H C0 &&
                echo $H >F &&
                git commit -a -F "$TEST_DIRECTORY"/t3900/$H.txt
        '
done

for H in ISO8859-1 eucJP ISO-2022-JP
do
        test_expect_success "check encoding header for $H" '
                E=$(git cat-file commit '$H' | sed -ne "s/^encoding //p") &&
                test "z$E" = "z'$H'"
        '
done

test_expect_success 'config to remove customization' '
        git config --unset-all i18n.commitencoding &&
        if Z=$(git config --get-all i18n.commitencoding)
        then
                echo Oops, should have failed.
                false
        else
                test z = "z$Z"
        fi &&
        git config i18n.commitencoding UTF-8
'

test_expect_success 'ISO8859-1 should be shown in UTF-8 now' '
        compare_with ISO8859-1 "$TEST_DIRECTORY"/t3900/1-UTF-8.txt
'

for H in eucJP ISO-2022-JP
do
        test_expect_success "$H should be shown in UTF-8 now" '
                compare_with '$H' "$TEST_DIRECTORY"/t3900/2-UTF-8.txt
        '
done

test_expect_success 'config to add customization' '
        git config --unset-all i18n.commitencoding &&
        if Z=$(git config --get-all i18n.commitencoding)
        then
                echo Oops, should have failed.
                false
        else
                test z = "z$Z"
        fi
'

for H in ISO8859-1 eucJP ISO-2022-JP
do
        test_expect_success "$H should be shown in itself now" '
                git config i18n.commitencoding '$H' &&
                compare_with '$H' "$TEST_DIRECTORY"/t3900/'$H'.txt
        '
done

test_expect_success 'config to tweak customization' '
        git config i18n.logoutputencoding UTF-8
'

test_expect_success 'ISO8859-1 should be shown in UTF-8 now' '
        compare_with ISO8859-1 "$TEST_DIRECTORY"/t3900/1-UTF-8.txt
'

for H in eucJP ISO-2022-JP
do
        test_expect_success "$H should be shown in UTF-8 now" '
                compare_with '$H' "$TEST_DIRECTORY"/t3900/2-UTF-8.txt
        '
done

for J in eucJP ISO-2022-JP
do
        if test "$J" = ISO-2022-JP
        then
                ICONV=$J
        else
                ICONV=
        fi
        git config i18n.logoutputencoding $J
        for H in eucJP ISO-2022-JP
        do
                test_expect_success "$H should be shown in $J now" '
                        compare_with '$H' "$TEST_DIRECTORY"/t3900/'$J'.txt $ICONV
                '
        done
done

for H in ISO8859-1 eucJP ISO-2022-JP
do
        test_expect_success "No conversion with $H" '
                compare_with "--encoding=none '$H'" "$TEST_DIRECTORY"/t3900/'$H'.txt
        '
done

test_commit_autosquash_flags () {
        H=$1
        flag=$2
        test_expect_success "commit --$flag with $H encoding" '
                git config i18n.commitencoding $H &&
                git checkout -b $H-$flag C0 &&
                echo $H >>F &&
                git commit -a -F "$TEST_DIRECTORY"/t3900/$H.txt &&
                test_tick &&
                echo intermediate stuff >>G &&
                git add G &&
                git commit -a -m "intermediate commit" &&
                test_tick &&
                echo $H $flag >>F &&
                git commit -a --$flag HEAD~1 &&
                E=$(git cat-file commit '$H-$flag' |
                        sed -ne "s/^encoding //p") &&
                test "z$E" = "z$H" &&
                git config --unset-all i18n.commitencoding &&
                git rebase --autosquash -i HEAD^^^ &&
                git log --oneline >actual &&
                test_line_count = 3 actual
        '
}

test_commit_autosquash_flags eucJP fixup

test_commit_autosquash_flags ISO-2022-JP squash

test_done