#!/bin/bash

# Copyright 2006, 2007, 2008, 2009, 2010, 2012, 2014, 2015, 2016, 2017, 2018  Patrick J. Volkerding, Sebeka, MN, USA
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

cd $(dirname $0) ; CWD=$(pwd)

PKGNAM=nano
VERSION=${VERSION:-$(echo $PKGNAM-*.tar.xz | cut -d - -f 2 | rev | cut -f 3- -d . | rev)}
BUILD=${BUILD:-1}

NUMJOBS=${NUMJOBS:-" -j$(expr $(nproc) + 1) "}

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) export ARCH=i586 ;;
    arm*) export ARCH=arm ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
       *) export ARCH=$( uname -m ) ;;
  esac
fi

# If the variable PRINT_PACKAGE_NAME is set, then this script will report what
# the name of the created package would be, and then exit. This information
# could be useful to other scripts.
if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PKGNAM-$VERSION-$ARCH-$BUILD.txz"
  exit 0
fi

if [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=pentium4 -mtune=generic"
  LIBDIRSUFFIX=""
  ARCHQUADLET=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -march=x86-64 -mtune=generic -fPIC"
  LIBDIRSUFFIX="64"
  ARCHQUADLET=""
elif [ "$ARCH" = "arm" ]; then
  SLKCFLAGS="-O2 -march=armv5te"
  LIBDIRSUFFIX=""
  ARCHQUADLET="-gnueabi"
elif [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
  ARCHQUADLET=""
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
  ARCHQUADLET=""
fi

TMP=${TMP:-/tmp}
PKG=$TMP/package-${PKGNAM}
rm -rf $PKG
mkdir -p $TMP $PKG

# Don't use icecream:
PATH=$(echo $PATH | sed "s|/usr/libexec/icecc/bin||g" | tr -s : | sed "s/^://g" | sed "s/:$//g")

cd $TMP
rm -rf ${PKGNAM}-${VERSION}
tar xvf $CWD/${PKGNAM}-$VERSION.tar.xz || exit 1
cd ${PKGNAM}-$VERSION || exit 1

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

# Add AArch64 architecture (and new architectures):
\cp /usr/share/libtool/build-aux/config.* .

# Configure:
CFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --sysconfdir=/etc \
  --infodir=/usr/info \
  --mandir=/usr/man \
  --docdir=/usr/doc/nano-$VERSION \
  --datadir=/usr/share \
  --program-prefix= \
  --program-suffix= \
  --enable-color \
  --enable-multibuffer \
  --enable-nanorc \
  --enable-utf8 \
  --build=$ARCH-slackware-linux$ARCHQUADLET || exit 1

# Build and install:
make $NUMJOBS || make || exit 1
make install DESTDIR=$PKG || exit 1

# Strip binaries:
find $PKG | xargs file | grep -e "executable" -e "shared object" \
  | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null

# Compress and link manpages, if any:
if [ -d $PKG/usr/man ]; then
  ( cd $PKG/usr/man
    for manpagedir in $(find . -type d -name "man*") ; do
      ( cd $manpagedir
        for eachpage in $( find . -type l -maxdepth 1) ; do
          ln -s $( readlink $eachpage ).gz $eachpage.gz
          rm $eachpage
        done
        gzip -9 *.*
      )
    done
  )
fi

# Compress info files, if any:
if [ -d $PKG/usr/info ]; then
  ( cd $PKG/usr/info
    rm -f dir
    gzip -9 *
  )
fi

# Install a default /etc/nanorc file.  This is the standard sample
# file from the doc directory that loads the colour configurations
# from /usr/share/nano.
mkdir -vpm755 $PKG/etc
if [ -f doc/nanorc.sample ]; then
  sed 's?^# include?include?g' doc/nanorc.sample > $PKG/etc/nanorc.new 
elif [ -f doc/sample.nanorc ]; then
  sed 's?^# include?include?g' doc/sample.nanorc > $PKG/etc/nanorc.new 
else
  touch $PKG/etc/nanorc.new
fi
chmod 644 $PKG/etc/nanorc.new

# Add a documentation directory:
mkdir -p $PKG/usr/doc/${PKGNAM}-$VERSION
cp -a \
  ABOUT-NLS AUTHORS BUGS COPYING* IMPROVEMENTS INSTALL NEWS README* THANKS TODO UPGRADE \
  doc/faq.html doc/nanorc.sample doc/sample.nanorc \
  $PKG/usr/doc/${PKGNAM}-$VERSION

# If there's a ChangeLog, installing at least part of the recent history
# is useful, but don't let it get totally out of control:
if [ -r ChangeLog ]; then
  DOCSDIR=$(echo $PKG/usr/doc/*-$VERSION)
  cat ChangeLog | head -n 1000 > $DOCSDIR/ChangeLog
  touch -r ChangeLog $DOCSDIR/ChangeLog
fi

# Place the package description and installation script:
mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
zcat $CWD/doinst.sh.gz > $PKG/install/doinst.sh

cd $PKG
/sbin/makepkg -l y -c n $TMP/${PKGNAM}-$VERSION-$ARCH-$BUILD.txz