#!/bin/sh

test_description='CRLF conversion'

. ./test-lib.sh

q_to_nul () {
        perl -pe 'y/Q/\000/'
}

q_to_cr () {
        tr Q '\015'
}

append_cr () {
        sed -e 's/$/Q/' | tr Q '\015'
}

remove_cr () {
        tr '\015' Q <"$1" | grep Q >/dev/null &&
        tr '\015' Q <"$1" | sed -ne 's/Q$//p'
}

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 '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 &&

        for f in one dir/two
        do
                append_cr <$f >tmp && mv -f tmp $f &&
                git update-index -- $f || {
                        echo Oops
                        false
                        break
                }
        done &&

        differs=`git diff-index --cached HEAD` &&
        test -z "$differs" || {
                echo Oops "$differs"
                false
        }

'

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 &&

        for f in one dir/two
        do
                append_cr <$f >tmp && mv -f tmp $f &&
                git update-index -- $f || {
                        echo "Oops $f"
                        false
                        break
                }
        done &&

        differs=`git diff-index --cached HEAD` &&
        test -z "$differs" || {
                echo Oops "$differs"
                false
        }

'

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 &&

        for f in one dir/two
        do
                remove_cr "$f" >tmp && mv -f tmp $f &&
                git update-index -- $f || {
                        echo "Eh? $f"
                        false
                        break
                }
        done &&
        test "$one" = `git hash-object --stdin <one` &&
        test "$two" = `git hash-object --stdin <dir/two` &&
        differs=`git diff-index --cached HEAD` &&
        test -z "$differs" || {
                echo Oops "$differs"
                false
        }
'

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 &&

        for f in one dir/two
        do
                if remove_cr "$f" >/dev/null
                then
                        echo "Eh? $f"
                        false
                        break
                else
                        git update-index -- $f
                fi
        done &&
        test "$one" = `git hash-object --stdin <one` &&
        test "$two" = `git hash-object --stdin <dir/two` &&
        differs=`git diff-index --cached HEAD` &&
        test -z "$differs" || {
                echo Oops "$differs"
                false
        }
'

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 &&
        test "$patched" = "`git hash-object --stdin <one`" || {
                echo "Eh?  apply without index"
                false
        }
'

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 &&
        test "$patched" = `git rev-parse :one` || {
                echo "Eh?  apply with --cached"
                false
        }
'

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 &&
        test "$patched" = `git rev-parse :one` &&
        test "$patched" = `git hash-object --stdin <one` || {
                echo "Eh?  apply with --index"
                false
        }
'

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 &&
        test "$patched" = "`remove_cr one | git hash-object --stdin`" || {
                echo "Eh?  apply without index"
                false
        }
'

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 &&
        test "$patched" = `git rev-parse :one` || {
                echo "Eh?  apply without index"
                false
        }
'

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 &&
        test "$patched" = `git rev-parse :one` &&
        test "$patched" = "`remove_cr one | git hash-object --stdin`" || {
                echo "Eh?  apply with --index"
                false
        }
'

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 remove_cr dir/two >/dev/null
        then
                echo "Huh?"
                false
        else
                : happy
        fi &&

        if remove_cr one >/dev/null
        then
                : happy
        else
                echo "Huh?"
                false
        fi &&

        if remove_cr three >/dev/null
        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 remove_cr dir/two >/dev/null
        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 &&

        if remove_cr dir/two >/dev/null
        then
                : happy
        else
                echo "Huh?"
                false
        fi &&

        if remove_cr three >/dev/null
        then
                : happy
        else
                echo "Huh?"
                false
        fi
'

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 &&

        if remove_cr one >/dev/null
        then
                echo "Eh? one should not have CRLF"
                false
        else
                : happy
        fi &&
        remove_cr three >/dev/null || {
                echo "Eh? three should still have CRLF"
                false
        }
'

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 &&

        if remove_cr one >/dev/null
        then
                echo "Eh? one should not have CRLF"
                false
        else
                : happy
        fi &&
        remove_cr three >/dev/null || {
                echo "Eh? three should still have CRLF"
                false
        }
'

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 &&

        if remove_cr one >/dev/null
        then
                echo "Eh? one should not have CRLF"
                false
        else
                : happy
        fi &&
        remove_cr three >/dev/null || {
                echo "Eh? three should still have CRLF"
                false
        }
'

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 &&

        if remove_cr one >/dev/null
        then
                echo "Eh? one should not have CRLF"
                false
        else
                : happy
        fi &&
        remove_cr three >/dev/null || {
                echo "Eh? three should still have CRLF"
                false
        }
'

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 &&
        remove_cr .file2 >/dev/null

'

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

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

'

test_done