#!/bin/bash

# Slackware build script for beav

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

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

# This is a seriously old piece of software. The timestamps inside
# the tarball all read 'Nov 30 1994' so it's almost 24 years old (old
# enough to buy beer, even in the US). I'm adding it to SBo mainly for
# old-timers to use, people who are used to using beav on other distros
# or OSes.

# At this point, the original maintainer and homepage for beav are long
# gone, so I'm considering the Debian page for it as the 'official'
# source. VERSION matches the Debian patchlevel, e.g. 1.40-18 => 1.40_18.
# Also included a compile fix patch based on one from AUR, plus my own
# patch to add the arrow keys to the default keybindings.

# Entertaining piece of trivia for you: the Debian maintainer of beav
# is none other than Sam Hocevar, who also invented the WTFPL license
# that's used for this script and most of my other SBo builds. Hi, Sam!

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

PRGNAM=beav
VERSION=${VERSION:-1.40_18}
BUILD=${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

MAINVER="$( echo $VERSION | cut -d_ -f1 )"
TARVER="$( echo $MAINVER | sed 's/\.//g' )"
PATCHVER="$( echo $VERSION | cut -d_ -f2 )"

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$TARVER
tar xvf $CWD/${PRGNAM}_$MAINVER.orig.tar.gz
cd $PRGNAM-$TARVER
chown -R root:root .
chmod 644 *

# apply Debian's patches
zcat $CWD/${PRGNAM}_$MAINVER-$PATCHVER.diff.gz | patch -p1

# compile fix patch is basically this from AUR:
# https://aur.archlinux.org/cgit/aur.git/tree/beav_on_archlinux.patch?h=beav
# but with SLKCFLAGS support in the Makefile, and redone as a -p1 patch.
patch -p1 < $CWD/compilefixes.diff

# Arrow key support:

# FFS, arrow keys have been standard on damn near all keyboards for
# 40+ years now, even creaky old dinosaurs like me use them. beav only
# supports them if you go thru the laborious process of defining them
# in your .beavrc.

# This patch adds them to the default keybind list (without affecting
# the original ^B ^F ^N ^P bindings, so they still work).

# Bindings tested & working with:
# linux console, xterm, rxvt, urxvt, xfce4-terminal, konsole.

# Might not work on some oddball terminal, but in that case, the user
# can define their weird arrow key combos in .beavrc as usual.  Patch was
# sent to the Debian maintainer (Sam Hocevar) on 20180807.
patch -p1 < $CWD/arrow_keys.diff

# fix Debianized doc dir reference
sed -i \
  's:/usr/share/doc[^ ]*:/usr/doc/'$PRGNAM-$VERSION/$PRGNAM$TARVER.txt: \
  $PRGNAM.1

# can't use CFLAGS for this...
make SLKCFLAGS="$SLKCFLAGS"

install -D -s -m0755 -oroot -groot $PRGNAM $PKG/usr/bin/$PRGNAM
mkdir -p $PKG/usr/man/man1
gzip -9c $PRGNAM.1 > $PKG/usr/man/man1/$PRGNAM.1.gz

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a read.me $PRGNAM$TARVER.txt debian/changelog $PKG/usr/doc/$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

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