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

test_description='git grep various.
'

. ./test-lib.sh

test_expect_success 'Check for external grep support' '
        case "$(git grep -h 2>&1|grep ext-grep)" in
        *"(default)"*)
                test_set_prereq EXTGREP
                true;;
        *"(ignored by this build)"*)
                true;;
        *)
                false;;
        esac
'

cat >hello.c <<EOF
#include <stdio.h>
int main(int argc, const char **argv)
{
        printf("Hello world.\n");
        return 0;
}
EOF

test_expect_success setup '
        {
                echo foo mmap bar
                echo foo_mmap bar
                echo foo_mmap bar mmap
                echo foo mmap bar_mmap
                echo foo_mmap bar mmap baz
        } >file &&
        echo vvv >v &&
        echo ww w >w &&
        echo x x xx x >x &&
        echo y yy >y &&
        echo zzz > z &&
        mkdir t &&
        echo test >t/t &&
        echo vvv >t/v &&
        mkdir t/a &&
        echo vvv >t/a/v &&
        git add . &&
        test_tick &&
        git commit -m initial
'

test_expect_success 'grep should not segfault with a bad input' '
        test_must_fail git grep "("
'

for H in HEAD ''
do
        case "$H" in
        HEAD)   HC='HEAD:' L='HEAD' ;;
        '')     HC= L='in working tree' ;;
        esac

        test_expect_success "grep -w $L" '
                {
                        echo ${HC}file:1:foo mmap bar
                        echo ${HC}file:3:foo_mmap bar mmap
                        echo ${HC}file:4:foo mmap bar_mmap
                        echo ${HC}file:5:foo_mmap bar mmap baz
                } >expected &&
                git grep -n -w -e mmap $H >actual &&
                diff expected actual
        '

        test_expect_success "grep -w $L (w)" '
                : >expected &&
                ! git grep -n -w -e "^w" >actual &&
                test_cmp expected actual
        '

        test_expect_success "grep -w $L (x)" '
                {
                        echo ${HC}x:1:x x xx x
                } >expected &&
                git grep -n -w -e "x xx* x" $H >actual &&
                diff expected actual
        '

        test_expect_success "grep -w $L (y-1)" '
                {
                        echo ${HC}y:1:y yy
                } >expected &&
                git grep -n -w -e "^y" $H >actual &&
                diff expected actual
        '

        test_expect_success "grep -w $L (y-2)" '
                : >expected &&
                if git grep -n -w -e "^y y" $H >actual
                then
                        echo should not have matched
                        cat actual
                        false
                else
                        diff expected actual
                fi
        '

        test_expect_success "grep -w $L (z)" '
                : >expected &&
                if git grep -n -w -e "^z" $H >actual
                then
                        echo should not have matched
                        cat actual
                        false
                else
                        diff expected actual
                fi
        '

        test_expect_success "grep $L (t-1)" '
                echo "${HC}t/t:1:test" >expected &&
                git grep -n -e test $H >actual &&
                diff expected actual
        '

        test_expect_success "grep $L (t-2)" '
                echo "${HC}t:1:test" >expected &&
                (
                        cd t &&
                        git grep -n -e test $H
                ) >actual &&
                diff expected actual
        '

        test_expect_success "grep $L (t-3)" '
                echo "${HC}t/t:1:test" >expected &&
                (
                        cd t &&
                        git grep --full-name -n -e test $H
                ) >actual &&
                diff expected actual
        '

        test_expect_success "grep -c $L (no /dev/null)" '
                ! git grep -c test $H | grep /dev/null
        '

        test_expect_success "grep --max-depth -1 $L" '
                {
                        echo ${HC}t/a/v:1:vvv
                        echo ${HC}t/v:1:vvv
                        echo ${HC}v:1:vvv
                } >expected &&
                git grep --max-depth -1 -n -e vvv $H >actual &&
                test_cmp expected actual
        '

        test_expect_success "grep --max-depth 0 $L" '
                {
                        echo ${HC}v:1:vvv
                } >expected &&
                git grep --max-depth 0 -n -e vvv $H >actual &&
                test_cmp expected actual
        '

        test_expect_success "grep --max-depth 0 -- '*' $L" '
                {
                        echo ${HC}t/a/v:1:vvv
                        echo ${HC}t/v:1:vvv
                        echo ${HC}v:1:vvv
                } >expected &&
                git grep --max-depth 0 -n -e vvv $H -- "*" >actual &&
                test_cmp expected actual
        '

        test_expect_success "grep --max-depth 1 $L" '
                {
                        echo ${HC}t/v:1:vvv
                        echo ${HC}v:1:vvv
                } >expected &&
                git grep --max-depth 1 -n -e vvv $H >actual &&
                test_cmp expected actual
        '

        test_expect_success "grep --max-depth 0 -- t $L" '
                {
                        echo ${HC}t/v:1:vvv
                } >expected &&
                git grep --max-depth 0 -n -e vvv $H -- t >actual &&
                test_cmp expected actual
        '

done

cat >expected <<EOF
file:foo mmap bar_mmap
EOF

test_expect_success 'grep -e A --and -e B' '
        git grep -e "foo mmap" --and -e bar_mmap >actual &&
        test_cmp expected actual
'

cat >expected <<EOF
file:foo_mmap bar mmap
file:foo_mmap bar mmap baz
EOF


test_expect_success 'grep ( -e A --or -e B ) --and -e B' '
        git grep \( -e foo_ --or -e baz \) \
                --and -e " mmap" >actual &&
        test_cmp expected actual
'

cat >expected <<EOF
file:foo mmap bar
EOF

test_expect_success 'grep -e A --and --not -e B' '
        git grep -e "foo mmap" --and --not -e bar_mmap >actual &&
        test_cmp expected actual
'

cat >expected <<EOF
y:y yy
--
z:zzz
EOF

# Create 1024 file names that sort between "y" and "z" to make sure
# the two files are handled by different calls to an external grep.
# This depends on MAXARGS in builtin-grep.c being 1024 or less.
c32="0 1 2 3 4 5 6 7 8 9 a b c d e f g h i j k l m n o p q r s t u v"
test_expect_success 'grep -C1, hunk mark between files' '
        for a in $c32; do for b in $c32; do : >y-$a$b; done; done &&
        git add y-?? &&
        git grep -C1 "^[yz]" >actual &&
        test_cmp expected actual
'

test_expect_success 'grep -C1 --no-ext-grep, hunk mark between files' '
        git grep -C1 --no-ext-grep "^[yz]" >actual &&
        test_cmp expected actual
'

test_expect_success 'log grep setup' '
        echo a >>file &&
        test_tick &&
        GIT_AUTHOR_NAME="With * Asterisk" \
        GIT_AUTHOR_EMAIL="xyzzy@frotz.com" \
        git commit -a -m "second" &&

        echo a >>file &&
        test_tick &&
        git commit -a -m "third"

'

test_expect_success 'log grep (1)' '
        git log --author=author --pretty=tformat:%s >actual &&
        ( echo third ; echo initial ) >expect &&
        test_cmp expect actual
'

test_expect_success 'log grep (2)' '
        git log --author=" * " -F --pretty=tformat:%s >actual &&
        ( echo second ) >expect &&
        test_cmp expect actual
'

test_expect_success 'log grep (3)' '
        git log --author="^A U" --pretty=tformat:%s >actual &&
        ( echo third ; echo initial ) >expect &&
        test_cmp expect actual
'

test_expect_success 'log grep (4)' '
        git log --author="frotz\.com>$" --pretty=tformat:%s >actual &&
        ( echo second ) >expect &&
        test_cmp expect actual
'

test_expect_success 'log grep (5)' '
        git log --author=Thor -F --grep=Thu --pretty=tformat:%s >actual &&
        ( echo third ; echo initial ) >expect &&
        test_cmp expect actual
'

test_expect_success 'log grep (6)' '
        git log --author=-0700  --pretty=tformat:%s >actual &&
        >expect &&
        test_cmp expect actual
'

test_expect_success 'grep with CE_VALID file' '
        git update-index --assume-unchanged t/t &&
        rm t/t &&
        test "$(git grep --no-ext-grep test)" = "t/t:test" &&
        git update-index --no-assume-unchanged t/t &&
        git checkout t/t
'

cat >expected <<EOF
hello.c=#include <stdio.h>
hello.c:        return 0;
EOF

test_expect_success 'grep -p with userdiff' '
        git config diff.custom.funcname "^#" &&
        echo "hello.c diff=custom" >.gitattributes &&
        git grep -p return >actual &&
        test_cmp expected actual
'

cat >expected <<EOF
hello.c=int main(int argc, const char **argv)
hello.c:        return 0;
EOF

test_expect_success 'grep -p' '
        rm -f .gitattributes &&
        git grep -p return >actual &&
        test_cmp expected actual
'

cat >expected <<EOF
hello.c-#include <stdio.h>
hello.c=int main(int argc, const char **argv)
hello.c-{
hello.c-        printf("Hello world.\n");
hello.c:        return 0;
EOF

test_expect_success 'grep -p -B5' '
        git grep -p -B5 return >actual &&
        test_cmp expected actual
'

test_expect_success EXTGREP 'external grep is called' '
        GIT_TRACE=2 git grep foo >/dev/null 2>actual &&
        grep "trace: grep:.*foo" actual >/dev/null
'

test_expect_success EXTGREP 'no external grep when skip-worktree entries exist' '
        git update-index --skip-worktree file &&
        GIT_TRACE=2 git grep foo >/dev/null 2>actual &&
        ! grep "trace: grep:" actual >/dev/null &&
        git update-index --no-skip-worktree file
'

test_done