#!/bin/sh
#
# Copyright (c) 2012 Torsten Bögershausen
#

test_description='utf-8 decomposed (nfd) converted to precomposed (nfc)'

. ./test-lib.sh

Adiarnfc=`printf '\303\204'`
Adiarnfd=`printf 'A\314\210'`

# check if the feature is compiled in
mkdir junk &&
>junk/"$Adiarnfc" &&
case "$(cd junk && echo *)" in
        "$Adiarnfd")
        test_nfd=1
        ;;
        *)      ;;
esac
rm -rf junk


if test "$test_nfd"
then
        # create more utf-8 variables
        Odiarnfc=`printf '\303\226'`
        Odiarnfd=`printf 'O\314\210'`
        AEligatu=`printf '\303\206'`
        Invalidu=`printf '\303\377'`


        #Create a string with 255 bytes (decomposed)
        Alongd=$Adiarnfd$Adiarnfd$Adiarnfd$Adiarnfd$Adiarnfd$Adiarnfd$Adiarnfd #21 Byte
        Alongd=$Alongd$Alongd$Alongd                                           #63 Byte
        Alongd=$Alongd$Alongd$Alongd$Alongd$Adiarnfd                           #255 Byte

        #Create a string with 254 bytes (precomposed)
        Alongc=$AEligatu$AEligatu$AEligatu$AEligatu$AEligatu #10 Byte
        Alongc=$Alongc$Alongc$Alongc$Alongc$Alongc           #50 Byte
        Alongc=$Alongc$Alongc$Alongc$Alongc$Alongc           #250 Byte
        Alongc=$Alongc$AEligatu$AEligatu                     #254 Byte

        test_expect_success "detect if nfd needed" '
                precomposeunicode=`git config core.precomposeunicode` &&
                test "$precomposeunicode" = false &&
                git config core.precomposeunicode true
        '
        test_expect_success "setup" '
                >x &&
                git add x &&
                git commit -m "1st commit" &&
                git rm x &&
                git commit -m "rm x"
        '
        test_expect_success "setup case mac" '
                git checkout -b mac_os
        '
        # This will test nfd2nfc in readdir()
        test_expect_success "add file Adiarnfc" '
                echo f.Adiarnfc >f.$Adiarnfc &&
                git add f.$Adiarnfc &&
                git commit -m "add f.$Adiarnfc"
        '
        # This will test nfd2nfc in git stage()
        test_expect_success "stage file d.Adiarnfd/f.Adiarnfd" '
                mkdir d.$Adiarnfd &&
                echo d.$Adiarnfd/f.$Adiarnfd >d.$Adiarnfd/f.$Adiarnfd &&
                git stage d.$Adiarnfd/f.$Adiarnfd &&
                git commit -m "add d.$Adiarnfd/f.$Adiarnfd"
        '
        test_expect_success "add link Adiarnfc" '
                ln -s d.$Adiarnfd/f.$Adiarnfd l.$Adiarnfc &&
                git add l.$Adiarnfc &&
                git commit -m "add l.Adiarnfc"
        '
        # This will test git log
        test_expect_success "git log f.Adiar" '
                git log f.$Adiarnfc > f.Adiarnfc.log &&
                git log f.$Adiarnfd > f.Adiarnfd.log &&
                test -s f.Adiarnfc.log &&
                test -s f.Adiarnfd.log &&
                test_cmp f.Adiarnfc.log f.Adiarnfd.log &&
                rm f.Adiarnfc.log f.Adiarnfd.log
        '
        # This will test git ls-files
        test_expect_success "git lsfiles f.Adiar" '
                git ls-files f.$Adiarnfc > f.Adiarnfc.log &&
                git ls-files f.$Adiarnfd > f.Adiarnfd.log &&
                test -s f.Adiarnfc.log &&
                test -s f.Adiarnfd.log &&
                test_cmp f.Adiarnfc.log f.Adiarnfd.log &&
                rm f.Adiarnfc.log f.Adiarnfd.log
        '
        # This will test git mv
        test_expect_success "git mv" '
                git mv f.$Adiarnfd f.$Odiarnfc &&
                git mv d.$Adiarnfd d.$Odiarnfc &&
                git mv l.$Adiarnfd l.$Odiarnfc &&
                git commit -m "mv Adiarnfd Odiarnfc"
        '
        # Files can be checked out as nfc
        # And the link has been corrected from nfd to nfc
        test_expect_success "git checkout nfc" '
                rm f.$Odiarnfc &&
                git checkout f.$Odiarnfc
        '
        # Make it possible to checkout files with their NFD names
        test_expect_success "git checkout file nfd" '
                rm -f f.* &&
                git checkout f.$Odiarnfd
        '
        # Make it possible to checkout links with their NFD names
        test_expect_success "git checkout link nfd" '
                rm l.* &&
                git checkout l.$Odiarnfd
        '
        test_expect_success "setup case mac2" '
                git checkout master &&
                git reset --hard &&
                git checkout -b mac_os_2
        '
        # This will test nfd2nfc in git commit
        test_expect_success "commit file d2.Adiarnfd/f.Adiarnfd" '
                mkdir d2.$Adiarnfd &&
                echo d2.$Adiarnfd/f.$Adiarnfd >d2.$Adiarnfd/f.$Adiarnfd &&
                git add d2.$Adiarnfd/f.$Adiarnfd &&
                git commit -m "add d2.$Adiarnfd/f.$Adiarnfd" -- d2.$Adiarnfd/f.$Adiarnfd
        '
        test_expect_success "setup for long decomposed filename" '
                git checkout master &&
                git reset --hard &&
                git checkout -b mac_os_long_nfd_fn
        '
        test_expect_success "Add long decomposed filename" '
                echo longd >$Alongd &&
                git add * &&
                git commit -m "Long filename"
        '
        test_expect_success "setup for long precomposed filename" '
                git checkout master &&
                git reset --hard &&
                git checkout -b mac_os_long_nfc_fn
        '
        test_expect_success "Add long precomposed filename" '
                echo longc >$Alongc &&
                git add * &&
                git commit -m "Long filename"
        '
        # Test if the global core.precomposeunicode stops autosensing
        # Must be the last test case
        test_expect_success "respect git config --global core.precomposeunicode" '
                git config --global core.precomposeunicode true &&
                rm -rf .git &&
                git init &&
                precomposeunicode=`git config core.precomposeunicode` &&
                test "$precomposeunicode" = "true"
        '
else
         say "Skipping nfc/nfd tests"
fi

test_done