#!/bin/sh

test_description='CRLF conversion'

. ./test-lib.sh

has_cr() {
        tr '\015' Q <"$1" | grep Q >/dev/null
}

# add or remove CRs to disk file in-place
# usage: munge_cr <append|remove> <file>
munge_cr () {
        "${1}_cr" <"$2" >tmp &&
        mv tmp "$2"
}

test_expect_success setup '

        git config core.autocrlf false &&

        for w in Hello world how are you; do echo $w; done >one &&
        mkdir dir &&
        for w in I am very very fine thank you; do echo $w; done >dir/two &&
        for w in Oh here is NULQin text here; do echo $w; done | q_to_nul >three &&
        git add . &&

        git commit -m initial &&

        one=$(git rev-parse HEAD:one) &&
        dir=$(git rev-parse HEAD:dir) &&
        two=$(git rev-parse HEAD:dir/two) &&
        three=$(git rev-parse HEAD:three) &&

        for w in Some extra lines here; do echo $w; done >>one &&
        git diff >patch.file &&
        patched=$(git hash-object --stdin <one) &&
        git read-tree --reset -u HEAD &&

        echo happy.
'

test_expect_success 'safecrlf: autocrlf=input, all CRLF' '

        git config core.autocrlf input &&
        git config core.safecrlf true &&

        for w in I am all CRLF; do echo $w; done | append_cr >allcrlf &&
        test_must_fail git add allcrlf
'

test_expect_success 'safecrlf: autocrlf=input, mixed LF/CRLF' '

        git config core.autocrlf input &&
        git config core.safecrlf true &&

        for w in Oh here is CRLFQ in text; do echo $w; done | q_to_cr >mixed &&
        test_must_fail git add mixed
'

test_expect_success 'safecrlf: autocrlf=true, all LF' '

        git config core.autocrlf true &&
        git config core.safecrlf true &&

        for w in I am all LF; do echo $w; done >alllf &&
        test_must_fail git add alllf
'

test_expect_success 'safecrlf: autocrlf=true mixed LF/CRLF' '

        git config core.autocrlf true &&
        git config core.safecrlf true &&

        for w in Oh here is CRLFQ in text; do echo $w; done | q_to_cr >mixed &&
        test_must_fail git add mixed
'

test_expect_success 'safecrlf: print warning only once' '

        git config core.autocrlf input &&
        git config core.safecrlf warn &&

        for w in I am all LF; do echo $w; done >doublewarn &&
        git add doublewarn &&
        git commit -m "nowarn" &&
        for w in Oh here is CRLFQ in text; do echo $w; done | q_to_cr >doublewarn &&
        test $(git add doublewarn 2>&1 | grep "CRLF will be replaced by LF" | wc -l) = 1
'


test_expect_success 'safecrlf: git diff demotes safecrlf=true to warn' '
        git config core.autocrlf input &&
        git config core.safecrlf true &&
        git diff HEAD
'


test_expect_success 'switch off autocrlf, safecrlf, reset HEAD' '
        git config core.autocrlf false &&
        git config core.safecrlf false &&
        git reset --hard HEAD^
'

test_expect_success 'update with autocrlf=input' '

        rm -f tmp one dir/two three &&
        git read-tree --reset -u HEAD &&
        git config core.autocrlf input &&
        munge_cr append one &&
        munge_cr append dir/two &&
        git update-index -- one dir/two &&
        differs=$(git diff-index --cached HEAD) &&
        verbose test -z "$differs"

'

test_expect_success 'update with autocrlf=true' '

        rm -f tmp one dir/two three &&
        git read-tree --reset -u HEAD &&
        git config core.autocrlf true &&
        munge_cr append one &&
        munge_cr append dir/two &&
        git update-index -- one dir/two &&
        differs=$(git diff-index --cached HEAD) &&
        verbose test -z "$differs"

'

test_expect_success 'checkout with autocrlf=true' '

        rm -f tmp one dir/two three &&
        git config core.autocrlf true &&
        git read-tree --reset -u HEAD &&
        munge_cr remove one &&
        munge_cr remove dir/two &&
        git update-index -- one dir/two &&
        test "$one" = $(git hash-object --stdin <one) &&
        test "$two" = $(git hash-object --stdin <dir/two) &&
        differs=$(git diff-index --cached HEAD) &&
        verbose test -z "$differs"
'

test_expect_success 'checkout with autocrlf=input' '

        rm -f tmp one dir/two three &&
        git config core.autocrlf input &&
        git read-tree --reset -u HEAD &&
        test_must_fail has_cr one &&
        test_must_fail has_cr dir/two &&
        git update-index -- one dir/two &&
        test "$one" = $(git hash-object --stdin <one) &&
        test "$two" = $(git hash-object --stdin <dir/two) &&
        differs=$(git diff-index --cached HEAD) &&
        verbose test -z "$differs"
'

test_expect_success 'apply patch (autocrlf=input)' '

        rm -f tmp one dir/two three &&
        git config core.autocrlf input &&
        git read-tree --reset -u HEAD &&

        git apply patch.file &&
        verbose test "$patched" = "$(git hash-object --stdin <one)"
'

test_expect_success 'apply patch --cached (autocrlf=input)' '

        rm -f tmp one dir/two three &&
        git config core.autocrlf input &&
        git read-tree --reset -u HEAD &&

        git apply --cached patch.file &&
        verbose test "$patched" = $(git rev-parse :one)
'

test_expect_success 'apply patch --index (autocrlf=input)' '

        rm -f tmp one dir/two three &&
        git config core.autocrlf input &&
        git read-tree --reset -u HEAD &&

        git apply --index patch.file &&
        verbose test "$patched" = $(git rev-parse :one) &&
        verbose test "$patched" = $(git hash-object --stdin <one)
'

test_expect_success 'apply patch (autocrlf=true)' '

        rm -f tmp one dir/two three &&
        git config core.autocrlf true &&
        git read-tree --reset -u HEAD &&

        git apply patch.file &&
        verbose test "$patched" = "$(remove_cr <one | git hash-object --stdin)"
'

test_expect_success 'apply patch --cached (autocrlf=true)' '

        rm -f tmp one dir/two three &&
        git config core.autocrlf true &&
        git read-tree --reset -u HEAD &&

        git apply --cached patch.file &&
        verbose test "$patched" = $(git rev-parse :one)
'

test_expect_success 'apply patch --index (autocrlf=true)' '

        rm -f tmp one dir/two three &&
        git config core.autocrlf true &&
        git read-tree --reset -u HEAD &&

        git apply --index patch.file &&
        verbose test "$patched" = $(git rev-parse :one) &&
        verbose test "$patched" = "$(remove_cr <one | git hash-object --stdin)"
'

test_expect_success '.gitattributes says two is binary' '

        rm -f tmp one dir/two three &&
        echo "two -crlf" >.gitattributes &&
        git config core.autocrlf true &&
        git read-tree --reset -u HEAD &&

        if has_cr dir/two
        then
                echo "Huh?"
                false
        else
                : happy
        fi &&

        if has_cr one
        then
                : happy
        else
                echo "Huh?"
                false
        fi &&

        if has_cr three
        then
                echo "Huh?"
                false
        else
                : happy
        fi
'

test_expect_success '.gitattributes says two is input' '

        rm -f tmp one dir/two three &&
        echo "two crlf=input" >.gitattributes &&
        git read-tree --reset -u HEAD &&

        if has_cr dir/two
        then
                echo "Huh?"
                false
        else
                : happy
        fi
'

test_expect_success '.gitattributes says two and three are text' '

        rm -f tmp one dir/two three &&
        echo "t* crlf" >.gitattributes &&
        git read-tree --reset -u HEAD &&

        verbose has_cr dir/two &&
        verbose has_cr three
'

test_expect_success 'in-tree .gitattributes (1)' '

        echo "one -crlf" >>.gitattributes &&
        git add .gitattributes &&
        git commit -m "Add .gitattributes" &&

        rm -rf tmp one dir .gitattributes patch.file three &&
        git read-tree --reset -u HEAD &&

        test_must_fail has_cr one &&
        verbose has_cr three
'

test_expect_success 'in-tree .gitattributes (2)' '

        rm -rf tmp one dir .gitattributes patch.file three &&
        git read-tree --reset HEAD &&
        git checkout-index -f -q -u -a &&

        test_must_fail has_cr one &&
        verbose has_cr three
'

test_expect_success 'in-tree .gitattributes (3)' '

        rm -rf tmp one dir .gitattributes patch.file three &&
        git read-tree --reset HEAD &&
        git checkout-index -u .gitattributes &&
        git checkout-index -u one dir/two three &&

        test_must_fail has_cr one &&
        verbose has_cr three
'

test_expect_success 'in-tree .gitattributes (4)' '

        rm -rf tmp one dir .gitattributes patch.file three &&
        git read-tree --reset HEAD &&
        git checkout-index -u one dir/two three &&
        git checkout-index -u .gitattributes &&

        test_must_fail has_cr one &&
        verbose has_cr three
'

test_expect_success 'checkout with existing .gitattributes' '

        git config core.autocrlf true &&
        git config --unset core.safecrlf &&
        echo ".file2 -crlfQ" | q_to_cr >> .gitattributes &&
        git add .gitattributes &&
        git commit -m initial &&
        echo ".file -crlfQ" | q_to_cr >> .gitattributes &&
        echo "contents" > .file &&
        git add .gitattributes .file &&
        git commit -m second &&

        git checkout master~1 &&
        git checkout master &&
        test "$(git diff-files --raw)" = ""

'

test_expect_success 'checkout when deleting .gitattributes' '

        git rm .gitattributes &&
        echo "contentsQ" | q_to_cr > .file2 &&
        git add .file2 &&
        git commit -m third &&

        git checkout master~1 &&
        git checkout master &&
        has_cr .file2

'

test_expect_success 'invalid .gitattributes (must not crash)' '

        echo "three +crlf" >>.gitattributes &&
        git diff

'
# Some more tests here to add new autocrlf functionality.
# We want to have a known state here, so start a bit from scratch

test_expect_success 'setting up for new autocrlf tests' '
        git config core.autocrlf false &&
        git config core.safecrlf false &&
        rm -rf .????* * &&
        for w in I am all LF; do echo $w; done >alllf &&
        for w in Oh here is CRLFQ in text; do echo $w; done | q_to_cr >mixed &&
        for w in I am all CRLF; do echo $w; done | append_cr >allcrlf &&
        git add -A . &&
        git commit -m "alllf, allcrlf and mixed only" &&
        git tag -a -m "message" autocrlf-checkpoint
'

test_expect_success 'report no change after setting autocrlf' '
        git config core.autocrlf true &&
        touch * &&
        git diff --exit-code
'

test_expect_success 'files are clean after checkout' '
        rm * &&
        git checkout -f &&
        git diff --exit-code
'

cr_to_Q_no_NL () {
    tr '\015' Q | tr -d '\012'
}

test_expect_success 'LF only file gets CRLF with autocrlf' '
        test "$(cr_to_Q_no_NL < alllf)" = "IQamQallQLFQ"
'

test_expect_success 'Mixed file is still mixed with autocrlf' '
        test "$(cr_to_Q_no_NL < mixed)" = "OhhereisCRLFQintext"
'

test_expect_success 'CRLF only file has CRLF with autocrlf' '
        test "$(cr_to_Q_no_NL < allcrlf)" = "IQamQallQCRLFQ"
'

test_expect_success 'New CRLF file gets LF in repo' '
        tr -d "\015" < alllf | append_cr > alllf2 &&
        git add alllf2 &&
        git commit -m "alllf2 added" &&
        git config core.autocrlf false &&
        rm * &&
        git checkout -f &&
        test_cmp alllf alllf2
'

test_done