# Distributed under the terms of the GNU General Public License v2

EAPI=6
VIM_VERSION="8.0"
PYTHON_COMPAT=( python{2_7,3_4,3_5,3_6} )
PYTHON_REQ_USE=threads
inherit eutils vim-doc flag-o-matic fdo-mime versionator bash-completion-r1 python-r1

if [[ ${PV} == 9999* ]] ; then
	inherit git-r3
	EGIT_REPO_URI="https://github.com/vim/vim.git"
else
	SRC_URI="https://github.com/vim/vim/archive/v${PV}.tar.gz -> ${P}.tar.gz"
	KEYWORDS="*"
fi

DESCRIPTION="Vim, an improved vi-style text editor"
HOMEPAGE="http://www.vim.org/ https://github.com/vim/vim"

SLOT="0"
LICENSE="vim"
IUSE="X acl cscope debug gpm lua luajit minimal nls perl python racket ruby selinux tcl vim-pager"
REQUIRED_USE="
	luajit? ( lua )
	python? (
	    || ( $(python_gen_useflags '*') )
	    ?? ( $(python_gen_useflags 'python2*') )
	    ?? ( $(python_gen_useflags 'python3*') )
	)
"

RDEPEND="
	>=app-eselect/eselect-vi-1.1
	>=sys-libs/ncurses-5.2-r2:0=
	nls? ( virtual/libintl )
	acl? ( kernel_linux? ( sys-apps/acl ) )
	cscope? ( dev-util/cscope )
	gpm? ( >=sys-libs/gpm-1.19.3 )
	lua? (
	    luajit? ( dev-lang/luajit:2= )
	    !luajit? ( dev-lang/lua:0[deprecated] )
	)
	!minimal? (
	    ~app-editors/vim-core-${PV}
	    dev-util/ctags
	)
	perl? ( dev-lang/perl:= )
	python? ( ${PYTHON_DEPS} )
	racket? ( dev-scheme/racket )
	ruby? ( || ( dev-lang/ruby:2.3 dev-lang/ruby:2.2 dev-lang/ruby:2.1 dev-lang/ruby:2.0 ) )
	selinux? ( sys-libs/libselinux )
	tcl? ( dev-lang/tcl:0= )
	X? ( x11-libs/libXt )
"
DEPEND="${RDEPEND}
	sys-devel/autoconf
	nls? ( sys-devel/gettext )
"

PATCHES=( "$FILESDIR/001_all_vim-6.3-xorg-75816.patch"
"$FILESDIR/002_all_vim-7.3-apache-83565.patch"
"$FILESDIR/003_all_vim-7.0-automake-substitutions-93378.patch"
"$FILESDIR/004_all_vim-7.0-grub-splash-96155.patch"
"$FILESDIR/005_all_vim_7.1-ada-default-compiler.patch"
"$FILESDIR/006-vim-8.0-crosscompile.patch" )

pkg_setup() {
    # people with broken alphabets run into trouble. bug 82186.
    unset LANG LC_ALL
    export LC_COLLATE="C"

    # Gnome sandbox silliness. bug #114475.
    mkdir -p "${T}"/home
    export HOME="${T}"/home
}

src_prepare() {
    epatch "${FILESDIR}/001_all_vim-6.3-xorg-75816.patch"
    epatch "${FILESDIR}/002_all_vim-7.3-apache-83565.patch"
    epatch "${FILESDIR}/003_all_vim-7.0-automake-substitutions-93378.patch"
    epatch "${FILESDIR}/004_all_vim-7.0-grub-splash-96155.patch"
    epatch "${FILESDIR}/005_all_vim_7.1-ada-default-compiler.patch"
    epatch "${FILESDIR}/006-vim-8.0-crosscompile.patch"

    # Fixup a script to use awk instead of nawk
    sed -i '1s|.*|#!'"${EPREFIX}"'/usr/bin/awk -f|' "${S}"/runtime/tools/mve.awk \
	   || die "mve.awk sed failed"

    # Read vimrc and gvimrc from /etc/vim
    echo '#define SYS_VIMRC_FILE "'${EPREFIX}'/etc/vim/vimrc"' >> "${S}"/src/feature.h
    echo '#define SYS_GVIMRC_FILE "'${EPREFIX}'/etc/vim/gvimrc"' >> "${S}"/src/feature.h

    # Use exuberant ctags which installs as /usr/bin/exuberant-ctags.
    # Hopefully this pattern won't break for a while at least.
    # This fixes bug 29398 (27 Sep 2003 agriffis)
    sed -i 's/\<ctags\("\| [-*.]\)/exuberant-&/g' \
	   "${S}"/runtime/doc/syntax.txt \
	   "${S}"/runtime/doc/tagsrch.txt \
	   "${S}"/runtime/doc/usr_29.txt \
	   "${S}"/runtime/menu.vim \
	   "${S}"/src/configure.ac || die 'sed failed'

    # Don't be fooled by /usr/include/libc.h.  When found, vim thinks
    # this is NeXT, but it's actually just a file in dev-libs/9libs
    # This fixes bug 43885 (20 Mar 2004 agriffis)
    sed -i 's/ libc\.h / /' "${S}"/src/configure.ac || die 'sed failed'

    # gcc on sparc32 has this, uhm, interesting problem with detecting EOF
    # correctly. To avoid some really entertaining error messages about stuff
    # which isn't even in the source file being invalid, we'll do some trickery
    # to make the error never occur. bug 66162 (02 October 2004 ciaranm)
    find "${S}" -name '*.c' | while read c ; do echo >> "$c" ; done

    # conditionally make the manpager.sh script
    if use vim-pager ; then
		cat <<-END > "${S}"/runtime/macros/manpager.sh
			#!/bin/sh
			sed -e 's/\x1B\[[[:digit:]]\+m//g' | col -b | \\
					vim \\
						-c 'let no_plugin_maps = 1' \\
						-c 'set nolist nomod ft=man ts=8' \\
						-c 'let g:showmarks_enable=0' \\
						-c 'runtime! macros/less.vim' -
			END
    fi

    # Try to avoid sandbox problems. Bug #114475.
    if [[ -d "${S}"/src/po ]] ; then
	    sed -i '/-S check.vim/s,..VIM.,ln -s $(VIM) testvim \; ./testvim -X,' \
		  "${S}"/src/po/Makefile
    fi

    if version_is_at_least 7.3.122 ; then
	    cp "${S}"/src/config.mk.dist "${S}"/src/auto/config.mk
    fi

    # Bug #378107 - Build properly with >=perl-core/ExtUtils-ParseXS-3.20.0
    if version_is_at_least 7.3 ; then
	    sed -i "s:\\\$(PERLLIB)/ExtUtils/xsubpp:${EPREFIX}/usr/bin/xsubpp:"	\
		   "${S}"/src/Makefile || die 'sed for ExtUtils-ParseXS failed'
    fi

    eapply_user
}

src_configure() {
	local myconf=()

	# Fix bug 37354: Disallow -funroll-all-loops on amd64
	# Bug 57859 suggests that we want to do this for all archs
	filter-flags -funroll-all-loops

	# Fix bug 76331: -O3 causes problems, use -O2 instead. We'll do this for
	# everyone since previous flag filtering bugs have turned out to affect
	# multiple archs...
	replace-flags -O3 -O2

	# Fix bug 18245: Prevent "make" from the following chain:
	# (1) Notice configure.ac is newer than auto/configure
	# (2) Rebuild auto/configure
	# (3) Notice auto/configure is newer than auto/config.mk
	# (4) Run ./configure (with wrong args) to remake auto/config.mk
	sed -i 's# auto/config\.mk:#:#' src/Makefile || die "Makefile sed failed"
	rm -f src/auto/configure
	emake -j1 -C src autoconf

	# This should fix a sandbox violation (see bug 24447). The hvc
	# things are for ppc64, see bug 86433.
	for file in /dev/pty/s* /dev/console /dev/hvc/* /dev/hvc* ; do
	    [[ -e ${file} ]] && addwrite $file
	done

	if use minimal ; then
	    myconf=(
		   --with-features=tiny
		   --disable-nls
		   --disable-multibyte
		   --disable-acl
		   --enable-gui=no
		   --without-x
		   --disable-darwin
		   --disable-luainterp
		   --disable-perlinterp
		   --disable-pythoninterp
		   --disable-mzschemeinterp
		   --disable-rubyinterp
		   --disable-selinux
		   --disable-tclinterp
		   --disable-gpm
	    )
	else
	    use debug && append-flags "-DDEBUG"

	    myconf=(
		   --with-features=huge
		   --enable-multibyte
		   $(use_enable acl)
		   $(use_enable cscope)
		   $(use_enable gpm)
		   $(use_enable lua luainterp)
		   $(usex lua "--with-lua-prefix=${EPREFIX}/usr" "")
		   $(use_with luajit)
		   $(use_enable nls)
		   $(use_enable perl perlinterp)
		   $(use_enable racket mzschemeinterp)
		   $(use_enable ruby rubyinterp)
		   $(use_enable selinux)
		   $(use_enable tcl tclinterp)
	    )

	    if use python ; then
		   py_add_interp() {
			  local v

			  [[ ${EPYTHON} == python3* ]] && v=3
			  myconf+=(
				 --enable-python${v}interp
				 vi_cv_path_python${v}="${PYTHON}"
			  )
		   }

		   python_foreach_impl py_add_interp
	    else
		   myconf+=(
			  --disable-pythoninterp
			  --disable-python3interp
		   )
	    fi

	    # --with-features=huge forces on cscope even if we --disable it. We need
	    # to sed this out to avoid screwiness. (1 Sep 2004 ciaranm)
	    if ! use cscope ; then
		   sed -i '/# define FEAT_CSCOPE/d' src/feature.h || \
			  die "couldn't disable cscope"
	    fi

	    # don't test USE=X here ... see bug #19115
	    # but need to provide a way to link against X ... see bug #20093
	    myconf+=(
		   --enable-gui=no
		   --disable-darwin
		   $(use_with X x)
	    )
	fi

	# let package manager strip binaries
	export ac_cv_prog_STRIP="$(type -P true ) faking strip"

	# keep prefix env contained within the EPREFIX
	use prefix && myconf+=( --without-local-dir )

	econf \
	    --with-modified-by=Gentoo-${PVR} \
	    "${myconf[@]}"
}

src_compile() {
	# The following allows emake to be used
	emake -j1 -C src auto/osdef.h objects

	emake
}

src_test() {
	echo
	einfo "Starting vim tests. Several error messages will be shown"
	einfo "while the tests run. This is normal behaviour and does not"
	einfo "indicate a fault."
	echo
	ewarn "If the tests fail, your terminal may be left in a strange"
	ewarn "state. Usually, running 'reset' will fix this."
	echo

	# Don't let vim talk to X
	unset DISPLAY

	emake -j1 -C src/testdir nongui
}

# Make convenience symlinks, hopefully without stepping on toes.  Some
# of these links are "owned" by the vim ebuild when it is installed,
# but they might be good for gvim as well (see bug 45828)
update_vim_symlinks() {
	local f syms
	syms="vimdiff rvim rview"
	einfo "Calling eselect vi update..."
	# Call this with --if-unset to respect user's choice (bug 187449)
	eselect vi update --if-unset

	# Make or remove convenience symlink, vim -> gvim
	if [[ -f "${EROOT}"/usr/bin/gvim ]]; then
	    ln -s gvim "${EROOT}"/usr/bin/vim 2>/dev/null
	elif [[ -L "${EROOT}"/usr/bin/vim && ! -f "${EROOT}"/usr/bin/vim ]]; then
	    rm "${EROOT}"/usr/bin/vim
	fi

	# Make or remove convenience symlinks to vim
	if [[ -f "${EROOT}"/usr/bin/vim ]]; then
	    for f in ${syms}; do
		   ln -s vim "${EROOT}"/usr/bin/${f} 2>/dev/null
	    done
	else
	    for f in ${syms}; do
		   if [[ -L "${EROOT}"/usr/bin/${f} && ! -f "${EROOT}"/usr/bin/${f} ]]; then
			  rm -f "${EROOT}"/usr/bin/${f}
		   fi
	    done
	fi

	# This will still break if you merge then remove the vi package,
	# but there's only so much you can do, eh?  Unfortunately we don't
	# have triggers like are done in rpm-land.
}

src_install() {
	local vimfiles=/usr/share/vim/vim${VIM_VERSION/.}

	# Note: Do not install symlinks for 'vi', 'ex', or 'view', as these are
	#	 managed by eselect-vi
	dobin src/vim
	dosym vim /usr/bin/vimdiff
	dosym vim /usr/bin/rvim
	dosym vim /usr/bin/rview
	if use vim-pager ; then
	    dosym ${vimfiles}/macros/less.sh /usr/bin/vimpager
	    dosym ${vimfiles}/macros/manpager.sh /usr/bin/vimmanpager
	    insinto ${vimfiles}/macros
	    doins runtime/macros/manpager.sh
	    fperms a+x ${vimfiles}/macros/manpager.sh
	fi

	newbashcomp "${FILESDIR}"/${PN}-completion ${PN}
	# keep in sync with 'complete ... -F' list
	bashcomp_alias vim ex vi view rvim rview vimdiff

	# We shouldn't be installing the ex or view man page symlinks, as they
	# are managed by eselect-vi
	rm -f "${ED}"/usr/share/man/man1/{ex,view}.1
}

pkg_postinst() {
	# Update documentation tags (from vim-doc.eclass)
	update_vim_helptags

	# Make convenience symlinks
	update_vim_symlinks
}

pkg_postrm() {
	# Update documentation tags (from vim-doc.eclass)
	update_vim_helptags

	# Make convenience symlinks
	update_vim_symlinks
}