# Copyright 2001 Gentoo Technologies, Inc.
# Distributed under the terms of the GNU General Public License, v2 or later
# Authors Ben Beuchler <insyte@mazer.squad51.net> 
#     and Aron Griffis <agriffis@gentoo.org>
# $Header$

DESCRIPTION="Vi IMproved!"
HOMEPAGE="http://www.vim.org/"

# Please name the ebuild as follows.  If this is followed, there
# should be no need to modify this ebuild when the Vim version is
# updated.  (Yes it's overkill, but it was fun!)
#
#   vim-6.0, when 6.0 is finally released
#   vim-6.0_pre9, where 9 = (i), for vim-6.0i
#   vim-6.0_pre47, where 47 = 26(a) + 21(u), for vim-6.0au
#   vim-6.0_pre72, where 72 = 52(b) + 20(t), for vim-6.0bt
#
# Quick reference:
#   a=1   e=5   i=9   m=13  q=17  u=21  y=25
#   b=2   f=6   j=10  n=14  r=18  v=22  z=26
#   c=3   g=7   k=11  o=15  s=19  w=23 aa=27
#   d=4   h=8   l=12  p=16  t=20  x=24 ab=28 (etc.)
#
# (08 Sep 2001 agriffis)

# Calculate the version based on the name of the ebuild
vim_version="${PV%_pre*}"
vim_pre="${PV##*_pre}"
if [ -z "$vim_pre" ]; then
    # Final releases include a dash in the directory name
    vim_letters=
    S="$WORKDIR/vim-$vim_version"
    A="vim-$vim_version.tar.bz2"
    SRC_URI="ftp://ftp.us.vim.org/pub/vim/unix/$A"
elif [ "$vim_pre" -lt 27 ]; then
    # Handle (prerelease) versions with one trailing letter
    vim_letters=`echo $vim_pre | awk '{printf "%c", $0+96}'`
    S="$WORKDIR/vim${vim_version//.}$vim_letters"
    A="vim-$vim_version$vim_letters.tar.bz2"
    SRC_URI="ftp://ftp.us.vim.org/pub/vim/unreleased/unix/$A"
elif [ "$vim_pre" -lt 703 ]; then
    # Handle (prerelease) versions with two trailing letters
    vim_letters=`echo $vim_pre | awk '{printf "%c%c", $0/26+96, $0%26+96}'`
    S="$WORKDIR/vim${vim_version//.}$vim_letters"
    A="vim-$vim_version$vim_letters.tar.bz2"
    SRC_URI="ftp://ftp.us.vim.org/pub/vim/unreleased/unix/$A"
else
    die "Eek!  I don't know how to interpret the version!"
fi

# It appears that the tclinterp stuff in Vim is broken right now.
# When you --enable-tclinterp flag, then the following command never
# returns:
#
#    VIMINIT='let OS = system("uname -s")' vim
#
# Please don't re-enable the tclinterp flag without verifying first
# that the above works.  Thanks.  (08 Sep 2001 agriffis)
DEPEND="$guidep
        virtual/glibc 
        >=sys-libs/ncurses-5.2-r2
	dev-util/cscope
        gpm?    ( >=sys-libs/gpm-1.19.3 )
	gnome?  ( gnome-base/gnome-libs )
	gtk?    ( x11-libs/gtk+ )
	X?      ( x11-base/xfree )
	perl?   ( sys-devel/perl )
	python? ( dev-lang/python )
	ruby?   ( >=dev-lang/ruby-1.6.4 )"
#	tcltk?  ( dev-lang/tcl-tk )"

src_unpack() {
    unpack $A
    # Fixup a script to use awk instead of nawk
    cd $S/runtime/tools
    mv mve.awk mve.awk.old
    ( read l; echo "#!/usr/bin/awk -f"; cat ) <mve.awk.old >mve.awk
}

src_compile() {
    local myconf
    use nls    || myconf="--disable-nls"
    use gpm    || myconf="$myconf --disable-gpm"
    use perl   && myconf="$myconf --enable-perlinterp"
    use python && myconf="$myconf --enable-pythoninterp"
    use ruby   && myconf="$myconf --enable-rubyinterp"
# tclinterp is BROKEN.  See note above DEPEND=
#   use tcltk  && myconf="$myconf --enable-tclinterp"

    #
    # First, build a gui version, this will install as /usr/bin/gvim
    #
    if use gnome; then
	guiconf="--enable-gui=gnome --with-x"
    elif use gtk; then
	guiconf="--enable-gui=gtk --with-x"
    elif use X; then
	guiconf="--enable-gui=athena --with-x"
    else
	# No gui version will be built
	guiconf=""
    fi
    if [ -n "$guiconf" ]; then
	./configure \
	    --prefix=/usr --mandir=/usr/share/man --host=$CHOST \
	    --enable-max-features --with-cscope $myconf $guiconf \
	    || die "gvim configure failed"
	# Parallel make does not work
	make || die "gvim make failed"
	mv src/vim src/gvim
    fi

    #
    # Second, build a nogui version, this will install as /usr/bin/vim
    #
    ./configure \
	--prefix=/usr --mandir=/usr/share/man --host=$CHOST \
	--enable-max-features --with-cscope $myconf \
	--enable-gui=no --without-x \
	|| die "vim configure failed"
    # Parallel make does not work
    make || die "vim make failed"
}

src_install() {
    # Install the nogui version
    mkdir -p $D/usr/{bin,share/man/man1,share/vim} $D/root
    make install STRIP=true \
	BINDIR=$D/usr/bin MANDIR=$D/usr/share/man DATADIR=$D/usr/share
    # Install the gui version, if it was built
    if [ -f src/gvim ]; then 
	install -m755 src/gvim $D/usr/bin/gvim
	ln -s gvim $D/usr/bin/gvimdiff
    fi
    # Docs
    dodoc README*
    cd $D/usr/share/doc/$PF
    ln -s ../../vim/*/doc $P
    # .vimrc for root
    install -m644 $FILESDIR/vimrc $D/root/.vimrc
    # Default .vimrc for users (this should be revisited)
    insinto /etc/skel
    newins $FILESDIR/vimrc .vimrc
}