#!/bin/bash

# Slackware build script for lsmi

# Written by B. Watson (yalhcru@gmail.com)

# Licensed under the WTFPL. See http://www.wtfpl.net/txt/copying/ for details.

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

PRGNAM=lsmi
VERSION=${VERSION:-0.1}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i586 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

set -e

rm -rf $PKG
mkdir -p $TMP $PKG/usr/bin $OUTPUT
cd $TMP
rm -rf $PRGNAM
tar xvf $CWD/$PRGNAM-$VERSION.tar.gz
cd $PRGNAM
chown -R root:root .
find -L . \
 \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 -o -perm 511 \) \
 -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
 -exec chmod 644 {} \;

# all this seddery could have been done with a diff, I just felt like
# using sed today for some reason.

# use our flags and install to our directory.
sed -i \
  -e "s/-g/$SLKCFLAGS/" \
  -e "s,/usr/local/bin,$PKG/usr/bin," \
  -e "s,install ,install -s -m0755 ," \
  Makefile

# fix typo in --help output
sed -i 's/thrree/three/' lsmi-mouse.c

# make keyhack's --help actually work
sed -i 's/fprintf.*Help.*/usage();/' lsmi-keyhack.c

# fix possible segfault
sed -i 's/\(char *prog_buf\)\[4\]/\1[5]/' lsmi-keyhack.c

# As shipped, only lsmi-monterey supports POSIX realtime scheduling. This
# patch (by the SlackBuild author) adds the -R option to the other lsmi-*
# binaries.
patch -p1 < $CWD/rtprio.diff

make
make install

# man pages came from the Musix project:
# ftp://musix.ourproject.org/pub/musix/deb/lsmi_0.1-1_i386.deb
# Modified a bit: fixed a typo, rewrote section
# about realtime scheduling so it applies to Slackware.
mkdir -p $PKG/usr/man/man1
cd $CWD/man
for i in *; do
  gzip -9c < $i > $PKG/usr/man/man1/$i.gz
done
cd -

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a README $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc

if [ "${SETCAP:-yes}" = "yes" ]; then
  cat $CWD/setcap.sh >> $PKG/install/doinst.sh
  for i in lsmi-joystick lsmi-keyhack lsmi-monterey lsmi-mouse; do
    chown root:audio $PKG/usr/bin/$i
    chmod 0750 $PKG/usr/bin/$i
  done
fi

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}