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

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

. ./test-lib.sh

if ! test_have_prereq UTF8_NFD_TO_NFC
then
        skip_all="filesystem does not corrupt utf-8"
        test_done
fi

# create utf-8 variables
Adiarnfc=$(printf '\303\204')
Adiarnfd=$(printf 'A\314\210')

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" = true &&
        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_expect_failure 'handle existing decomposed filenames' '
        echo content >"verbatim.$Adiarnfd" &&
        git -c core.precomposeunicode=false add "verbatim.$Adiarnfd" &&
        git commit -m "existing decomposed file" &&
        >expect &&
        git ls-files --exclude-standard -o "verbatim*" >untracked &&
        test_cmp expect untracked
'

# 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"
'

test_done