#!/bin/bash
#  Copyright (C) 2011  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}

P=pm-utils
V=${V:-1.4.1}
V2=${V2:-20100619}  # Quirks version.
V3=${V3:-1.31}      # Powermgmt-base version.
ARCH=${ARCH:-i486}
B=${B:-1}

# Flags for the compiler:
DCFLAGS=${DCFLAGS:=-O2 -march=i486 -mtune=i686}

PKG=${TMP}/package-${P}

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

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

cd ${TMP}/${P}-${V}

# Unpack the powermgmt-base:
tar xf ${CWD}/powermgmt-base_${V3}.tar.lz

# 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 {} +

# Apply patches.

zcat ${CWD}/patches/intel-audio-powersave.patch | patch -p1 --verbose
zcat ${CWD}/patches/0001-49bluetooth-Wait-for-btusb-module-to-get-unused.patch.gz | \
 patch -p1 --verbose

CFLAGS="$DCFLAGS" \
./configure \
 --prefix=/usr \
 --sysconfdir=/etc \
 --infodir=/usr/info \
 --mandir=/usr/man \
 --docdir=/usr/doc/${P}-${V} \
 --build=${ARCH}-dragora-linux-gnu

make
make install DESTDIR=$PKG

# Install the quirks:
tar xf ${CWD}/pm-quirks-${V2}.tar.lz
mkdir -p ${PKG}/usr/lib/pm-utils/video-quirks
install -m 644 video-quirks/*.quirkdb ${PKG}/usr/lib/pm-utils/video-quirks

# Build the powermgmt-base:
pushd powermgmt-base
  make
  mkdir -p ${PKG}/sbin
  make install DESTDIR=$PKG
popd

# Adjust permissions for sbin/ and usr/sbin:
for file in ${PKG}/sbin/* ${PKG}/usr/sbin/* ; do
  if [[ ( -x $file && ! -L $file ) ]]; then
    chmod -v 0750 $file
  fi
done

# Avoid hardware failure:
( cd ${PKG}/usr/lib/pm-utils/power.d
  rm -f disable_wol harddrive
)
# Currently, we are not supporting some applications
# like NetworkManager and NTP, so..:
( cd ${PKG}/usr/lib/pm-utils/sleep.d
  rm -f 55NetworkManager 90clock
)

# Compress .info page(s)?:
if [[ -d ${PKG}/usr/info ]]; then
  ( cd ${PKG}/usr/info
    rm -f dir  # Redundancy.
    gzip -9N *.info*
  )
fi

# Include manually the man pages:
mkdir -p ${PKG}/usr/man/man{1,8}
for file in powermgmt-base/man/*.1 man/*.1 ; do
  gzip -f -9Nc < $file > ${PKG}/usr/man/man1/${file##*/}.gz
done
for file in man/*.8 ; do
  gzip -9Nc < $file > ${PKG}/usr/man/man8/${file##*/}.gz
done

# Copy the rest of the documentation:
mkdir -p ${PKG}/usr/doc/${P}-${V}/powermgmt-base
cp -a \
 AUTHORS COPYING ChangeLog NEWS README* TODO \
 ${PKG}/usr/doc/${P}-${V}
( cd powermgmt-base
  cp -a \
   debian/copyright \
   ${PKG}/usr/doc/${P}-${V}/powermgmt-base
)

cd $PKG

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

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

# Build the package:
makepkg -l ${OUT}/${P}-${V}-${ARCH}-${B}.tlz