# 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
}