# Copyright 2008, 2009 Ingmar Vanhassel <ingmar@exherbo.org>
# Distributed under the terms of the GNU General Public License v2
# Based in part upon 'emacs-22.2-r2.ebuild' from Gentoo, which is:
#     Copyright 1999-2008 Gentoo Foundation.

require game alternatives elisp-module

if [[ -z $(ever range 3) ]]; then
    require gnu [ suffix=xz ]
else
    require gnu [ alpha=true subdir=pretest suffix=xz ]
fi

if [[ $(ever range 3) == rc* ]]; then
    MY_PV=$(ever range 1-2)
    MY_PNV=${PN}-${MY_PV}
fi

export_exlib_phases src_prepare src_configure src_install pkg_postinst

SUMMARY="The extensible, customizable, self-documenting, real-time display editor"

LICENCES="GPL-3"
SLOT="0"
MYOPTIONS="
    X alsa dbus freetype gif gpm gtk gtk3 otf svg tiff tiff xpm
    ( freetype gif gtk gtk3 otf svg tiff xpm ) [[ requires = X ]]
    ( gtk gtk3 ) [[ number-selected = at-most-one ]]
    gconf [[
        description = [ Allows emacs to determine the system font ]
        requires = X
    ]]
    otf [[
        description = [ Support for OpenType fonts ]
        requires = freetype
    ]]
"

DEPENDENCIES="
    build:
        X? ( dev-util/pkg-config )
        alsa? ( dev-util/pkg-config )
        dbus? ( dev-util/pkg-config )
        gtk? ( dev-util/pkg-config )
        gtk3? ( dev-util/pkg-config )
        svg? ( dev-util/pkg-config )
    build+run:
        dev-libs/libxml2:2.0 [[ note = [ used for html rendering; could be made optional ] ]]
        net-libs/liblockfile
        sys-libs/ncurses
        alsa? ( sys-sound/alsa-lib[>=1.0.0] )
        X? (
            media-libs/jpeg
            media-libs/libpng
            x11-data/xbitmaps
            x11-libs/libICE
            x11-libs/libSM
            x11-libs/libX11
            gif? ( media-libs/giflib )
            gtk? (
              dev-libs/glib:2[>=2.10]
              x11-libs/gtk+:2[>=2.10]
            )
            gtk3? (
              dev-libs/glib:2[>=2.28]
              x11-libs/gtk+:3[>=3.0]
            )
            otf? ( dev-libs/libotf )
            svg? ( gnome-desktop/librsvg:2[>=2.11.0] )
            tiff? ( media-libs/tiff )
            xpm? ( x11-libs/libXpm )
        )
        dbus? ( sys-apps/dbus[>=1.0.0] )
        freetype? (
            media-libs/fontconfig[>=2.2.0]
            media-libs/freetype:2
            x11-libs/libXft[>=0.13.0]
            x11-libs/libXrender [[ note = [ because of libXft ] ]]
        )
        gconf? ( gnome-platform/GConf:2 )
        gpm? ( sys-libs/gpm )
   suggestion:
        app-spell/aspell [[ description = [ For ispell and flyspell mode ] ]]
"

WORK=${WORKBASE}/${MY_PNV-${PNV}}

emacs_src_prepare() {
    # Compressing *.el files saves 25MB diskspace, which is not worth it on modern systems
    edo sed -i -e 's/@GZIP_PROG@//' {.,leim}/Makefile.in
    default

    # Create a copy of the clean source (it will be installed in src_install)
    edo tar cf source.tar src/
}

emacs_src_configure() {
    config_params=(
        --infodir=/usr/share/info/emacs
        --without-compress-info # applies to manpages as well
        --without-gsettings
        --without-hesiod
        --without-imagemagick
        --without-kerberos
        --without-kerberos5
        --without-m17n-flt
        --without-selinux
        --without-xim
    )

    config_withs=(
        'X x' 'X jpeg' 'X png'
        'alsa sound'
        'freetype xft'
        'otf libotf'
        'svg rsvg'
        'dbus' 'gconf' 'gif' 'gpm' 'tiff' 'xpm'
    )

    local toolkit=no
    option gtk  && toolkit=gtk;
    option gtk3 && toolkit=gtk3;

    econf \
        "${config_params[@]}" \
        $(for s in "${config_withs[@]}" ; do option_with ${s} ; done ) \
        $(option gtk || option gtk3 || echo --without-toolkit-scroll-bars) \
        --with-x-toolkit=${toolkit}
}

emacs_src_install() {
    default

    insinto ${ELISP_SITE_LISP}
    hereins site-start.el <<EOF
(require 'site-exherbo)
EOF

    keepdir /var/lib/games/emacs
    dovarlibgames -R
    # they lose group write permission anyway after being updated
    edo chmod g-w "${IMAGE}"/var/lib/games/emacs/*
    preserve_scores "${IMAGE}"/var/lib/games/emacs/*
    edo chown wizard:games "${IMAGE}"/usr/libexec/emacs/${MY_PV-${PV}}/${CHOST}/update-game-score
    edo chmod ug+s "${IMAGE}"/usr/libexec/emacs/${MY_PV-${PV}}/${CHOST}/update-game-score

    elisp-install-site-file

    # Install a copy of the clean source to `source-directory`. The builtin help system of emacs
    # requires it in order to fully function.
    local emacs_source_root=/usr/src/emacs
    dodir ${emacs_source_root}
    edo tar xf source.tar -C "${IMAGE}"${emacs_source_root}

    cd "${IMAGE}"
    edo mv usr/share/man/man1/ctags{,-emacs}.1
    edo mv usr/bin/ctags{,-emacs}
    alternatives_for ctags emacs 500 \
        /usr/bin/ctags ctags-emacs \
        /usr/share/man/man1/ctags.1 ctags-emacs.1

    hereenvd 70${PN} <<EOF
INFOPATH="/usr/share/info/${PN}"
EOF
}

emacs_pkg_postinst() {
    game_pkg_postinst
    alternatives_pkg_postinst
    elisp-generate-global-site-file
}