#!/bin/bash
#  Copyright (C) 2010-2012  Matias A. Fonzo, <selk@dragora.org>
#
#  This program is free software: you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation, either version 3 of the License, or
#  (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program.  If not, see <http://www.gnu.org/licenses/>.

set -e

CWD=$(pwd)

TMP=${TMP:-/tmp/sources}
OUT=${OUT:-/tmp/packages}

V=${V:-7.3}
SHORT_V=$(printf "$V" | tr -d .)
ARCH=${ARCH:-x86_64}
B=${B:-4}

# Flags for the compiler:
DCFLAGS=${DCFLAGS:=-O2 -mtune=generic}

PKG=${TMP}/package-vim-gvim

rm -rf $PKG
mkdir -p $PKG $OUT

echo "Uncompressing the tarball..."
rm -rf ${TMP}/vim-${V}
tar -xvf ${CWD}/vim-${V}.tar.lz -C $TMP

cd ${TMP}/vim${SHORT_V}

# Apply upstream fixes:
for file in ${CWD}/patches/?.?.??? ; do
  if [[ -f $file ]]; then
    cat $file | { patch -p0 --verbose || patch -p1 --verbose; }
  fi
done

# Set sane ownerships and permissions:
chown -R 0:0 .
find . \
 \( -perm 2777 -o \
    -perm 777  -o \
    -perm 775  -o \
    -perm 711  -o \
    -perm 555  -o \
    -perm 511     \
 \) -exec chmod 755 {} + \
  -o \
 \( -perm 666 -o \
    -perm 664 -o \
    -perm 600 -o \
    -perm 444 -o \
    -perm 440 -o \
    -perm 400    \
 \) -exec chmod 644 {} +

CFLAGS="$DCFLAGS" \
CXXFLAGS="$DCFLAGS" \
./configure \
 --prefix=/usr \
 --sysconfdir=/etc \
 --mandir=/usr/man \
 --localstatedir=/var \
 --enable-multibyte \
 --enable-perlinterp \
 --enable-pythoninterp \
 --enable-rubyinterp \
 --enable-tclinterp \
 --enable-cscope \
 --enable-gui=gtk2 \
 --with-features=huge \
 --with-x \
 --with-compiledby="Matias A. Fonzo <selk@dragora.org>" \
 --build=${ARCH}-dragora-linux-gnu

make && make install DESTDIR=$PKG

# Strip binaries & libraries:
( cd $PKG
  find . -type f | xargs file | awk '/ELF/ && /executable/ || /shared object/' | \
   cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true;
)

# Add our custom "vimrc" (thanks to LFS):
mkdir -p ${PKG}/etc
zcat ${CWD}/vimrc > ${PKG}/etc/vimrc.new

# Include entry for the desktop:
mkdir -p ${PKG}/usr/share/{applications,pixmaps}
zcat ${CWD}/vim-gvim.desktop.gz \
 > ${PKG}/usr/share/applications/vim-gvim.desktop
cat ${CWD}/vim-gvim.png > ${PKG}/usr/share/pixmaps/vim-gvim.png

# Compress and link manpages:
( cd ${PKG}/usr/man
  find . -type f -exec gzip -9N '{}' +
  find . -type l | while read file ; do
    ln -sf $(readlink $file).gz ${file}.gz
    rm $file
  done
)

# Make compatibility with "vi":
( cd ${PKG}/usr/bin
  ln -sf vim vi
)
( cd ${PKG}/usr/man
  find . -type f -name 'vim.1.gz' | while read file ; do
    ( cd $(dirname $file) ; ln -sf ${file##*/} vi.1.gz )
  done
)

# Copy the documentation:
mkdir -p ${PKG}/usr/doc/vim-gvim-${V}
cp -a \
 README.txt Contents \
 ${PKG}/usr/doc/vim-gvim-${V}

# Copy the description files:
mkdir -p ${PKG}/description
cp ${CWD}/description/?? ${PKG}/description

# Add the post install script:
mkdir -p ${PKG}/install
zcat ${CWD}/post-install.gz > ${PKG}/install/post-install

cd $PKG
makepkg -l ${OUT}/vim-gvim-${V}-${ARCH}-${B}.tlz