# Copyright 1999-2020 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=7

GENTOO_DEPEND_ON_PERL=no

# bug #329479: git-remote-testgit is not multiple-version aware
PYTHON_COMPAT=( python3_{6,7,8} )

inherit toolchain-funcs elisp-common l10n perl-module bash-completion-r1 python-single-r1 systemd

PLOCALES="bg ca de es fr is it ko pt_PT ru sv vi zh_CN"
if [[ ${PV} == *9999 ]]; then
	inherit git-r3
	EGIT_REPO_URI="git://git.kernel.org/pub/scm/git/git.git"
	# Please ensure that all _four_ 9999 ebuilds get updated; they track the 4 upstream branches.
	# See https://git-scm.com/docs/gitworkflows#_graduation
	# In order of stability:
	# 9999-r0: maint
	# 9999-r1: master
	# 9999-r2: next
	# 9999-r3: pu
	case "${PVR}" in
		9999) EGIT_BRANCH=maint ;;
		9999-r1) EGIT_BRANCH=master ;;
		9999-r2) EGIT_BRANCH=next;;
		9999-r3) EGIT_BRANCH=pu ;;
	esac
fi

MY_PV="${PV/_rc/.rc}"
MY_P="${PN}-${MY_PV}"

DOC_VER="${MY_PV}"

DESCRIPTION="stupid content tracker: distributed VCS designed for speed and efficiency"
HOMEPAGE="https://www.git-scm.com/"
if [[ ${PV} != *9999 ]]; then
	SRC_URI_SUFFIX="xz"
	SRC_URI_KORG="https://www.kernel.org/pub/software/scm/git"
	[[ "${PV/rc}" != "${PV}" ]] && SRC_URI_KORG+='/testing'
	SRC_URI="${SRC_URI_KORG}/${MY_P}.tar.${SRC_URI_SUFFIX}
			${SRC_URI_KORG}/${PN}-manpages-${DOC_VER}.tar.${SRC_URI_SUFFIX}
			doc? (
			${SRC_URI_KORG}/${PN}-htmldocs-${DOC_VER}.tar.${SRC_URI_SUFFIX}
			)"
	[[ "${PV}" == *_rc* ]] || \
	KEYWORDS="*"
fi

LICENSE="GPL-2"
SLOT="0"
IUSE="+blksha1 +curl cgi doc emacs gnome-keyring +gpg highlight +iconv libressl mediawiki mediawiki-experimental +nls +pcre +pcre-jit perforce +perl +ppcsha1 subversion tk +threads +webdav xinetd cvs test"

# Common to both DEPEND and RDEPEND
DEPEND="
	gnome-keyring? ( app-crypt/libsecret )
	!libressl? ( dev-libs/openssl:0= )
	libressl? ( dev-libs/libressl:= )
	sys-libs/zlib
	pcre? (
		pcre-jit? ( dev-libs/libpcre2[jit(+)] )
		!pcre-jit? ( dev-libs/libpcre )
	)
	perl? ( dev-lang/perl:=[-build(-)] )
	tk? ( dev-lang/tk:0= )
	curl? (
		net-misc/curl
		webdav? ( dev-libs/expat )
	)
	emacs? ( >=app-editors/emacs-23.1:* )
	iconv? ( virtual/libiconv )
"

RDEPEND="${DEPEND}
	gpg? ( app-crypt/gnupg )
	perl? (
		dev-perl/Error
		dev-perl/MailTools
		dev-perl/Authen-SASL
		cgi? (
			dev-perl/CGI
			highlight? ( app-text/highlight )
		)
		cvs? (
			>=dev-vcs/cvsps-2.1:0
			dev-perl/DBI
			dev-perl/DBD-SQLite
		)
		mediawiki? (
			dev-perl/DateTime-Format-ISO8601
			dev-perl/HTML-Tree
			dev-perl/MediaWiki-API
		)
		subversion? (
			dev-vcs/subversion[-dso(-),perl]
			dev-perl/libwww-perl
			dev-perl/TermReadKey
		)
	)
	perforce? ( ${PYTHON_DEPS} )
"

# This is how info docs are created with Git:
#   .txt/asciidoc --(asciidoc)---------> .xml/docbook
#   .xml/docbook  --(docbook2texi.pl)--> .texi
#   .texi         --(makeinfo)---------> .info
BDEPEND="
	doc? (
		app-text/asciidoc
		app-text/docbook2X
		app-text/xmlto
		sys-apps/texinfo
	)
	nls? ( sys-devel/gettext )
	test? (	app-crypt/gnupg	)
"

# Live ebuild builds man pages and HTML docs, additionally
if [[ ${PV} == *9999 ]]; then
	BDEPEND="${BDEPEND}
		app-text/asciidoc"
fi

SITEFILE="50${PN}-gentoo.el"
S="${WORKDIR}/${MY_P}"

REQUIRED_USE="
	cgi? ( perl )
	cvs? ( perl )
	mediawiki? ( perl )
	mediawiki-experimental? ( mediawiki )
	pcre-jit? ( pcre )
	perforce? ( ${PYTHON_REQUIRED_USE} )
	subversion? ( perl )
	webdav? ( curl )
"

RESTRICT="!test? ( test )"

PATCHES=(
	# bug #350330 - automagic CVS when we don't want it is bad.
	"${FILESDIR}"/git-2.22.0_rc0-optional-cvs.patch

	# Make submodule output quiet
	"${FILESDIR}"/git-2.21.0-quiet-submodules-testcase.patch
)

pkg_setup() {
	if use subversion && has_version "dev-vcs/subversion[dso]" ; then
		ewarn "Per Gentoo bugs #223747, #238586, when subversion is built"
		ewarn "with USE=dso, there may be weird crashes in git-svn. You"
		ewarn "have been warned."
	fi

	if use perforce ; then
		python-single-r1_pkg_setup
	fi
}

# This is needed because for some obscure reasons future calls to make don't
# pick up these exports if we export them in src_unpack()
exportmakeopts() {
	local extlibs myopts

	myopts=(
		ASCIIDOC_NO_ROFF=YesPlease
		$(usex cvs '' NO_CVS=YesPlease)
		$(usex elibc_musl NO_REGEX=YesPlease '')
		$(usex iconv '' NO_ICONV=YesPlease)
		$(usex nls '' NO_GETTEXT=YesPlease)
		$(usex perl 'INSTALLDIRS=vendor NO_PERL_CPAN_FALLBACKS=YesPlease' NO_PERL=YesPlease)
		$(usex perforce '' NO_PYTHON=YesPlease)
		$(usex subversion '' NO_SVN_TESTS=YesPlease)
		$(usex threads '' NO_PTHREADS=YesPlease)
		$(usex tk '' NO_TCLTK=YesPlease)
	)

	if use blksha1 ; then
		myopts+=( BLK_SHA1=YesPlease )
	elif use ppcsha1 ; then
		myopts+=( PPC_SHA1=YesPlease )
	fi

	if use curl ; then
		use webdav || myopts+=( NO_EXPAT=YesPlease )
	else
		myopts+=( NO_CURL=YesPlease )
	fi

	# broken assumptions, because of static build system ...
	myopts+=(
		NO_FINK=YesPlease
		NO_DARWIN_PORTS=YesPlease
		INSTALL=install
		TAR=tar
		SHELL_PATH="${EPREFIX}/bin/sh"
		SANE_TOOL_PATH=
		OLD_ICONV=
		NO_EXTERNAL_GREP=
	)

	# can't define this to null, since the entire makefile depends on it
	sed -i -e '/\/usr\/local/s/BASIC_/#BASIC_/' Makefile || die

	if use pcre; then
		if use pcre-jit; then
			myopts+=( USE_LIBPCRE2=YesPlease )
			extlibs+=( -lpcre2-8 )
		else
			myopts+=(
				USE_LIBPCRE1=YesPlease
				NO_LIBPCRE1_JIT=YesPlease
			)
			extlibs+=( -lpcre )
		fi
	fi
# Disabled until ~m68k-mint can be keyworded again
#	if [[ ${CHOST} == *-mint* ]] ; then
#		myopts+=(
#			NO_MMAP=YesPlease
#			NO_IPV6=YesPlease
#			NO_STRLCPY=YesPlease
#			NO_MEMMEM=YesPlease
#			NO_MKDTEMP=YesPlease
#			NO_MKSTEMPS=YesPlease
#		)
#	fi
	if [[ ${CHOST} == ia64-*-hpux* ]]; then
		myopts+=( NO_NSEC=YesPlease )
	fi
	if [[ ${CHOST} == *-*-aix* ]]; then
		myopts+=( NO_FNMATCH_CASEFOLD=YesPlease )
	fi
	if [[ ${CHOST} == *-solaris* ]]; then
		myopts+=(
			NEEDS_LIBICONV=YesPlease
			HAVE_CLOCK_MONOTONIC=1
		)
		if grep -q getdelim "${EROOT}"/usr/include/stdio.h ; then
			myopts+=( HAVE_GETDELIM=1 )
		fi
	fi

	if has_version '>=app-text/asciidoc-8.0' ; then
		myopts+=( ASCIIDOC8=YesPlease )
	fi

	# Bug 290465:
	# builtin-fetch-pack.c:816: error: 'struct stat' has no member named 'st_mtim'
	if [[ "${CHOST}" == *-uclibc* ]] ; then
		myopts+=( NO_NSEC=YesPlease )
		use iconv && myopts+=( NEEDS_LIBICONV=YesPlease )
	fi

	export MY_MAKEOPTS="${myopts[@]}"
	export EXTLIBS="${extlibs[@]}"
}

src_unpack() {
	if [[ ${PV} != *9999 ]]; then
		unpack ${MY_P}.tar.${SRC_URI_SUFFIX}
		cd "${S}" || die
		unpack ${PN}-manpages-${DOC_VER}.tar.${SRC_URI_SUFFIX}
		if use doc ; then
			pushd "${S}"/Documentation &>/dev/null || die
			unpack ${PN}-htmldocs-${DOC_VER}.tar.${SRC_URI_SUFFIX}
			popd &>/dev/null || die
		fi
	else
		git-r3_src_unpack
		#cp "${FILESDIR}"/GIT-VERSION-GEN .
	fi

}

src_prepare() {
	# add experimental patches to improve mediawiki support
	# see patches for origin
	if use mediawiki-experimental ; then
		PATCHES+=(
			"${FILESDIR}"/git-2.7.0-mediawiki-namespaces.patch
			"${FILESDIR}"/git-2.7.0-mediawiki-subpages.patch
			"${FILESDIR}"/git-2.7.0-mediawiki-500pages.patch
		)
	fi

	default

	sed -i \
		-e 's:^\(CFLAGS[[:space:]]*=\).*$:\1 $(OPTCFLAGS) -Wall:' \
		-e 's:^\(LDFLAGS[[:space:]]*=\).*$:\1 $(OPTLDFLAGS):' \
		-e 's:^\(CC[[:space:]]* =\).*$:\1$(OPTCC):' \
		-e 's:^\(AR[[:space:]]* =\).*$:\1$(OPTAR):' \
		-e "s:\(PYTHON_PATH[[:space:]]\+=[[:space:]]\+\)\(.*\)$:\1${EPREFIX}\2:" \
		-e "s:\(PERL_PATH[[:space:]]\+=[[:space:]]\+\)\(.*\)$:\1${EPREFIX}\2:" \
		Makefile || die

	# Fix docbook2texi command
	sed -r -i 's/DOCBOOK2X_TEXI[[:space:]]*=[[:space:]]*docbook2x-texi/DOCBOOK2X_TEXI = docbook2texi.pl/' \
		Documentation/Makefile || die
}

git_emake() {
	# bug #320647: PYTHON_PATH
	local PYTHON_PATH=""
	use perforce && PYTHON_PATH="${PYTHON}"
	emake ${MY_MAKEOPTS} \
		prefix="${EPREFIX}"/usr \
		htmldir="${EPREFIX}"/usr/share/doc/${PF}/html \
		perllibdir="$(use perl && perl_get_raw_vendorlib)" \
		sysconfdir="${EPREFIX}"/etc \
		DESTDIR="${D}" \
		GIT_TEST_OPTS="--no-color" \
		OPTAR="$(tc-getAR)" \
		OPTCC="$(tc-getCC)" \
		OPTCFLAGS="${CFLAGS}" \
		OPTLDFLAGS="${LDFLAGS}" \
		PERL_PATH="${EPREFIX}/usr/bin/perl" \
		PERL_MM_OPT="" \
		PYTHON_PATH="${PYTHON_PATH}" \
		V=1 \
		"$@"
}

src_configure() {
	exportmakeopts
}

src_compile() {
	git_emake || die "emake failed"

	if use emacs ; then
		elisp-compile contrib/emacs/git{,-blame}.el
	fi

	if use perl && use cgi ; then
		git_emake \
			gitweb \
			|| die "emake gitweb (cgi) failed"
	fi

	if [[ ${CHOST} == *-darwin* && ! tc-is-gcc ]]; then
		pushd contrib/credential/osxkeychain &>/dev/null || die
		git_emake CC=$(tc-getCC) CFLAGS="${CFLAGS}" \
			|| die "emake credential-osxkeychain"
		popd &>/dev/null || die
	fi

	pushd Documentation &>/dev/null || die
	if [[ ${PV} == *9999 ]] ; then
		git_emake man \
			|| die "emake man failed"
		if use doc ; then
			git_emake info html \
				|| die "emake info html failed"
		fi
	else
		if use doc ; then
			git_emake info \
				|| die "emake info html failed"
		fi
	fi
	popd &>/dev/null || die

	if use gnome-keyring ; then
		pushd contrib/credential/libsecret &>/dev/null || die
		git_emake || die "emake git-credential-libsecret failed"
		popd &>/dev/null || die
	fi

	pushd contrib/subtree &>/dev/null || die
	git_emake git-subtree
	# git-subtree.1 requires the full USE=doc dependency stack
	use doc && git_emake git-subtree.html git-subtree.1
	popd &>/dev/null || die

	pushd contrib/diff-highlight &>/dev/null || die
	git_emake
	popd &>/dev/null || die

	if use mediawiki ; then
		pushd contrib/mw-to-git &>/dev/null || die
		git_emake
		popd &>/dev/null || die

	fi
}

src_install() {
	git_emake install || die "make install failed"

	if [[ ${CHOST} == *-darwin* && ! tc-is-gcc ]]; then
		dobin contrib/credential/osxkeychain/git-credential-osxkeychain
	fi

	# Depending on the tarball and manual rebuild of the documentation, the
	# manpages may exist in either OR both of these directories.
	find man?/*.[157] >/dev/null 2>&1 && doman man?/*.[157]
	find Documentation/*.[157] >/dev/null 2>&1 && doman Documentation/*.[157]
	dodoc README* Documentation/{SubmittingPatches,CodingGuidelines}
	use doc && dodir /usr/share/doc/${PF}/html
	local d
	for d in / /howto/ /technical/ ; do
		docinto ${d}
		dodoc Documentation${d}*.txt
		if use doc ; then
			docinto ${d}/html
			dodoc Documentation${d}*.html
		fi
	done
	docinto /
	# Upstream does not ship this pre-built :-(
	use doc && doinfo Documentation/{git,gitman}.info

	newbashcomp contrib/completion/git-completion.bash ${PN}
	bashcomp_alias git gitk
	# Not really a bash-completion file (bug #477920)
	# but still needed uncompressed (bug #507480)
	insinto /usr/share/${PN}
	doins contrib/completion/git-prompt.sh

	if use emacs ; then
		elisp-install ${PN} contrib/emacs/git.{el,elc}
		elisp-install ${PN} contrib/emacs/git-blame.{el,elc}
		#elisp-install ${PN}/compat contrib/emacs/vc-git.{el,elc}
		# don't add automatically to the load-path, so the sitefile
		# can do a conditional loading
		touch "${ED}${SITELISP}/${PN}/compat/.nosearch"
		elisp-site-file-install "${FILESDIR}"/${SITEFILE}
	fi

	#dobin contrib/fast-import/git-p4 # Moved upstream
	#dodoc contrib/fast-import/git-p4.txt # Moved upstream
	newbin contrib/fast-import/import-tars.perl import-tars
	exeinto /usr/libexec/git-core/
	newexe contrib/git-resurrect.sh git-resurrect

	# git-subtree
	pushd contrib/subtree &>/dev/null || die
	git_emake install || die "Failed to emake install for git-subtree"
	if use doc ; then
		# Do not move git subtree install-man outside USE=doc!
		git_emake install-man install-html || die "Failed to emake install-html install-man for git-subtree"
	fi
	newdoc README README.git-subtree
	dodoc git-subtree.txt
	popd &>/dev/null || die

	if use mediawiki ; then
		pushd contrib/mw-to-git &>/dev/null || die
		git_emake install
		popd &>/dev/null || die
	fi

	# diff-highlight
	dobin contrib/diff-highlight/diff-highlight
	newdoc contrib/diff-highlight/README README.diff-highlight

	# git-jump
	exeinto /usr/libexec/git-core/
	doexe contrib/git-jump/git-jump
	newdoc contrib/git-jump/README git-jump.txt

	# git-contacts
	exeinto /usr/libexec/git-core/
	doexe contrib/contacts/git-contacts
	dodoc contrib/contacts/git-contacts.txt

	if use gnome-keyring ; then
		pushd contrib/credential/libsecret &>/dev/null || die
		dobin git-credential-libsecret
		popd &>/dev/null || die
	fi

	dodir /usr/share/${PN}/contrib
	# The following are excluded:
	# completion - installed above
	# diff-highlight - done above
	# emacs - installed above
	# examples - these are stuff that is not used in Git anymore actually
	# git-jump - done above
	# gitview - installed above
	# p4import - excluded because fast-import has a better one
	# patches - stuff the Git guys made to go upstream to other places
	# persistent-https - TODO
	# mw-to-git - TODO
	# subtree - build  seperately
	# svnimport - use git-svn
	# thunderbird-patch-inline - fixes thunderbird
	local contrib_objects=(
		buildsystems
		fast-import
		hg-to-git
		hooks
		remotes2config.sh
		rerere-train.sh
		stats
		workdir
	)
	local i
	for i in "${contrib_objects[@]}" ; do
		cp -rf \
			"${S}"/contrib/${i} \
			"${ED}"/usr/share/${PN}/contrib \
			|| die "Failed contrib ${i}"
	done

	if use perl && use cgi ; then
		# We used to install in /usr/share/${PN}/gitweb
		# but upstream installs in /usr/share/gitweb
		# so we will install a symlink and use their location for compat with other
		# distros
		dosym ../gitweb /usr/share/${PN}/gitweb

		# INSTALL discusses configuration issues, not just installation
		docinto /
		newdoc  "${S}"/gitweb/INSTALL INSTALL.gitweb
		newdoc  "${S}"/gitweb/README README.gitweb

		for d in "${ED}"/usr/lib{,64}/perl5/ ; do
			if test -d "${d}" ; then find "${d}" \
				-name .packlist \
				-delete || die
			fi
		done
	else
		rm -rf "${ED}"/usr/share/gitweb
	fi

	if ! use subversion ; then
		rm -f "${ED}"/usr/libexec/git-core/git-svn \
			"${ED}"/usr/share/man/man1/git-svn.1*
	fi

	if use xinetd ; then
		insinto /etc/xinetd.d
		newins "${FILESDIR}"/git-daemon.xinetd git-daemon
	fi

	if use !prefix ; then
		newinitd "${FILESDIR}"/git-daemon-r1.initd git-daemon
		newconfd "${FILESDIR}"/git-daemon.confd git-daemon
		systemd_newunit "${FILESDIR}/git-daemon_at-r1.service" "git-daemon@.service"
		systemd_dounit "${FILESDIR}/git-daemon.socket"
	fi

	perl_delete_localpod

	# Remove disabled linguas
	# we could remove sources in src_prepare, but install does not
	# handle missing locale dir well
	rm_loc() {
		if [[ -e "${ED}/usr/share/locale/${1}" ]]; then
			rm -r "${ED}/usr/share/locale/${1}" || die
		fi
	}
	l10n_for_each_disabled_locale_do rm_loc
}

src_test() {
	local disabled=()
	local tests_cvs=(
		t9200-git-cvsexportcommit.sh
		t9400-git-cvsserver-server.sh
		t9401-git-cvsserver-crlf.sh
		t9402-git-cvsserver-refs.sh
		t9600-cvsimport.sh
		t9601-cvsimport-vendor-branch.sh
		t9602-cvsimport-branches-tags.sh
		t9603-cvsimport-patchsets.sh
		t9604-cvsimport-timestamps.sh
	)
	local tests_perl=(
		t3701-add-interactive.sh
		t5502-quickfetch.sh
		t5512-ls-remote.sh
		t5520-pull.sh
		t7106-reset-unborn-branch.sh
		t7501-commit.sh
	)
	# Bug #225601 - t0004 is not suitable for root perm
	# Bug #219839 - t1004 is not suitable for root perm
	# t0001-init.sh - check for init notices EPERM*  fails
	local tests_nonroot=(
		t0001-init.sh
		t0004-unwritable.sh
		t0070-fundamental.sh
		t1004-read-tree-m-u-wf.sh
		t3700-add.sh
		t7300-clean.sh
	)
	# t9100 still fails with symlinks in SVN 1.7
	local test_svn=( t9100-git-svn-basic.sh )

	# Unzip is used only for the testcase code, not by any normal parts of Git.
	if ! has_version app-arch/unzip ; then
		einfo "Disabling tar-tree tests"
		disabled+=( t5000-tar-tree.sh )
	fi

	local cvs=0
	use cvs && let cvs=${cvs}+1
	if [[ ${EUID} -eq 0 ]]; then
		if [[ ${cvs} -eq 1 ]]; then
			ewarn "Skipping CVS tests because CVS does not work as root!"
			ewarn "You should retest with FEATURES=userpriv!"
			disabled+=( ${tests_cvs[@]} )
		fi
		einfo "Skipping other tests that require being non-root"
		disabled+=( ${tests_nonroot[@]} )
	else
		[[ ${cvs} -gt 0 ]] && \
			has_version dev-vcs/cvs && \
			let cvs=${cvs}+1
		[[ ${cvs} -gt 1 ]] && \
			has_version "dev-vcs/cvs[server]" && \
			let cvs=${cvs}+1
		if [[ ${cvs} -lt 3 ]]; then
			einfo "Disabling CVS tests (needs dev-vcs/cvs[USE=server])"
			disabled+=( ${tests_cvs[@]} )
		fi
	fi

	if ! use perl ; then
		einfo "Disabling tests that need Perl"
		disabled+=( ${tests_perl[@]} )
	fi

	einfo "Disabling tests that fail with SVN 1.7"
	disabled+=( ${test_svn[@]} )

	# Reset all previously disabled tests
	pushd t &>/dev/null || die
	local i
	for i in *.sh.DISABLED ; do
		[[ -f "${i}" ]] && mv -f "${i}" "${i%.DISABLED}"
	done
	einfo "Disabled tests:"
	for i in ${disabled[@]} ; do
		[[ -f "${i}" ]] && mv -f "${i}" "${i}.DISABLED" && einfo "Disabled ${i}"
	done

	# Avoid the test system removing the results because we want them ourselves
	sed -e '/^[[:space:]]*$(MAKE) clean/s,^,#,g' \
		-i Makefile || die

	# Clean old results first, must always run
	nonfatal git_emake clean
	popd &>/dev/null || die

	# Now run the tests, keep going if we hit an error, and don't terminate on
	# failure
	local rc
	einfo "Start test run"
	#MAKEOPTS=-j1
	nonfatal git_emake --keep-going test
	rc=$?

	# Display nice results, now print the results
	pushd t &>/dev/null || die
	nonfatal git_emake aggregate-results

	# And bail if there was a problem
	[[ ${rc} -eq 0 ]] || die "tests failed. Please file a bug."
}

showpkgdeps() {
	local pkg=$1
	shift
	elog "  $(printf "%-17s:" ${pkg}) ${@}"
}

pkg_postinst() {
	use emacs && elisp-site-regen
	elog "Please read /usr/share/bash-completion/completions/git for Git bash command"
	elog "completion."
	elog "Please read /usr/share/git/git-prompt.sh for Git bash prompt"
	elog "Note that the prompt bash code is now in that separate script"
	elog "These additional scripts need some dependencies:"
	echo
	showpkgdeps git-quiltimport "dev-util/quilt"
	showpkgdeps git-instaweb \
		"|| ( www-servers/lighttpd www-servers/apache www-servers/nginx )"
	echo
	use mediawiki-experimental && ewarn "Using experimental git-mediawiki patches. The stability of cloned wiki filesystems is not guaranteed."
}

pkg_postrm() {
	use emacs && elisp-site-regen
}