#!/bin/sh

# Slackware build script for alacritty

# Copyright 2017-2018 Andrew Clemons, Wellington New Zealand
# 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.

PRGNAM=alacritty
GITREV=${GITREV:-68b3d8abfdeeb388edb1b5e0528d3fddb66fd9e8}
VERSION=${VERSION:-git$(echo "$GITREV" | sed 's/^\(.\{7\}\).*$/\1/')}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

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

  if [ "$ARCH" = "i586" ]; then
    if rustc -Vv | grep host | grep i686 > /dev/null ; then
      ARCH=i686
    fi
  fi
fi

CWD=$(pwd)
TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  CARGOTARGET="--target i586-unknown-linux-gnu"
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  CARGOTARGET="--target i686-unknown-linux-gnu"
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  CARGOTARGET="--target x86_64-unknown-linux-gnu"
else
  SLKCFLAGS="-O2"
  CARGOTARGET=""
fi

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$GITREV
tar xvf $CWD/$PRGNAM-$GITREV.tar.gz
cd $PRGNAM-$GITREV

# force offline for git crate dependencies
patch -p1 < $CWD/patch_crate_deps.diff

# build offline
# configuration tells cargo to use the configured directory
# for dependencies instead of downloading from crates.io
mkdir .cargo
cat << EOF >> .cargo/config
[source.crates-io]
registry = 'https://github.com/rust-lang/crates.io-index'
replace-with = 'vendored-sources'

[source.vendored-sources]
directory = '$(pwd)/vendor'
EOF

# deps and versions come from Cargo.lock
# cargo vender can be used to generate the checksums
mkdir vendor
(
  cd vendor

  for dependency in aho-corasick=0.6.4 \
                    android_glue=0.2.3 \
                    ansi_term=0.11.0 \
                    approx=0.1.1 \
                    arraydeque=0.4.2 \
                    atty=0.2.10 \
                    base64=0.9.2 \
                    bitflags=0.4.0 \
                    bitflags=0.7.0 \
                    bitflags=0.8.2 \
                    bitflags=1.0.3 \
                    block=0.1.6 \
                    byteorder=1.2.3 \
                    bytes=0.3.0 \
                    cc=1.0.17 \
                    cfg-if=0.1.3 \
                    cgl=0.2.2 \
                    cgmath=0.16.1 \
                    clap=2.31.2 \
                    cmake=0.1.31 \
                    cocoa=0.15.0 \
                    core-foundation-sys=0.5.1 \
                    core-foundation-sys=0.6.0 \
                    core-foundation=0.5.1 \
                    core-foundation=0.6.0 \
                    core-graphics=0.13.0 \
                    core-graphics=0.14.0 \
                    core-text=9.2.0 \
                    dlib=0.4.1 \
                    downcast-rs=1.0.3 \
                    dtoa=0.4.2 \
                    env_logger=0.5.10 \
                    errno=0.2.3 \
                    euclid=0.17.3 \
                    expat-sys=2.1.5 \
                    filetime=0.1.15 \
                    fnv=1.0.6 \
                    foreign-types-shared=0.1.1 \
                    foreign-types=0.3.2 \
                    freetype-rs=0.13.0 \
                    freetype-sys=0.4.0 \
                    fsevent-sys=0.1.6 \
                    fsevent=0.2.17 \
                    fuchsia-zircon-sys=0.3.3 \
                    fuchsia-zircon=0.3.3 \
                    gl_generator=0.9.0 \
                    gleam=0.5.1 \
                    glutin=0.16.0 \
                    humantime=1.1.1 \
                    inotify=0.3.0 \
                    iovec=0.1.2 \
                    itoa=0.4.1 \
                    kernel32-sys=0.2.2 \
                    khronos_api=2.2.0 \
                    lazy_static=1.0.1 \
                    lazycell=0.4.0 \
                    lazycell=0.6.0 \
                    libc=0.2.42 \
                    libloading=0.5.0 \
                    libz-sys=1.0.18 \
                    linked-hash-map=0.5.1 \
                    log=0.3.9 \
                    log=0.4.2 \
                    malloc_buf=0.0.6 \
                    memchr=2.0.1 \
                    memmap=0.6.2 \
                    mio-more=0.1.0 \
                    mio=0.5.1 \
                    mio=0.6.14 \
                    miow=0.1.5 \
                    miow=0.2.1 \
                    net2=0.2.32 \
                    nix=0.11.0 \
                    nix=0.5.1 \
                    notify=4.0.3 \
                    num-traits=0.1.43 \
                    num-traits=0.2.4 \
                    objc-foundation=0.1.1 \
                    objc=0.2.2 \
                    objc_id=0.1.0 \
                    osmesa-sys=0.1.2 \
                    owning_ref=0.3.3 \
                    parking_lot=0.5.5 \
                    parking_lot_core=0.2.14 \
                    percent-encoding=1.0.1 \
                    pkg-config=0.3.11 \
                    proc-macro2=0.4.6 \
                    quick-error=1.2.2 \
                    quote=0.6.3 \
                    rand=0.4.2 \
                    redox_syscall=0.1.40 \
                    redox_termios=0.1.1 \
                    regex-syntax=0.6.1 \
                    regex=1.0.0 \
                    remove_dir_all=0.5.1 \
                    safemem=0.2.0 \
                    same-file=1.0.2 \
                    serde=1.0.66 \
                    serde_derive=1.0.66 \
                    serde_json=1.0.20 \
                    serde_yaml=0.7.5 \
                    shared_library=0.1.8 \
                    slab=0.1.3 \
                    slab=0.3.0 \
                    slab=0.4.0 \
                    smallvec=0.6.1 \
                    smithay-client-toolkit=0.2.3 \
                    stable_deref_trait=1.1.0 \
                    strsim=0.7.0 \
                    syn=0.14.2 \
                    tempfile=3.0.2 \
                    termcolor=0.3.6 \
                    termion=1.5.1 \
                    textwrap=0.9.0 \
                    thread_local=0.3.5 \
                    time=0.1.40 \
                    ucd-util=0.1.1 \
                    unicode-width=0.1.5 \
                    unicode-xid=0.1.0 \
                    unreachable=1.0.0 \
                    utf8-ranges=1.0.0 \
                    utf8parse=0.1.0 \
                    vcpkg=0.2.3 \
                    vec_map=0.8.1 \
                    void=1.0.2 \
                    vte=0.3.2 \
                    walkdir=2.1.4 \
                    wayland-client=0.20.10 \
                    wayland-commons=0.20.10 \
                    wayland-protocols=0.20.10 \
                    wayland-scanner=0.20.10 \
                    wayland-sys=0.20.10 \
                    winapi-build=0.1.1 \
                    winapi-i686-pc-windows-gnu=0.4.0 \
                    winapi-x86_64-pc-windows-gnu=0.4.0 \
                    winapi=0.2.8 \
                    winapi=0.3.5 \
                    wincolor=0.1.6 \
                    winit=0.15.1 \
                    ws2_32-sys=0.2.1 \
                    x11-dl=2.18.0 \
                    xdg=2.1.0 \
                    xml-rs=0.7.0 \
                    yaml-rust=0.4.0 \
                    servo-fontconfig=0.4.0 \
                    servo-fontconfig-sys=4.0.3 ; do
    dep="$(echo "$dependency" | cut -d= -f1)"
    ver="$(echo "$dependency" | cut -d= -f2)"

    if [ "$dep" = "servo-fontconfig" ] || [ "$dep" = "servo-fontconfig-sys" ] ; then
      if [ "$dep" = "servo-fontconfig" ] ; then
        srcnam="rust-fontconfig"
        sha1="be2b94de833ec69cf767186262a5fb8360fa5b45"
      else
        srcnam="libfontconfig"
        sha1="5c1845e1bffa11cf4d3e6fb27f456bf5c814ce1b"
      fi

      crate="$CWD/$srcnam-$sha1.tar.gz"
      tar xvf "$crate"
      mv "$srcnam-$sha1" "$dep-$ver"

      if [ "$dep" = "servo-fontconfig" ] ; then
        (
          cd "$dep-$ver"
          sed -i 's/^servo-fontconfig-sys =.*/servo-fontconfig-sys = "4.0.3"/' Cargo.toml
        )
      fi
    else
      crate="$CWD/$dep-$ver.crate"
      tar xvf "$crate"
    fi

    touch $dep-$ver/.cargo-ok

    # generate checksum
    {
      printf "{\n"
      printf '    "files": {\n'

      (
        cd $dep-$ver
        find . -type f -print0 | xargs -0 sha256sum | sed -n '/\.cargo-checksum\.json/!p' | sed 's/\.\///;s/^\([^ ]*\)[[:space:]][[:space:]]*\(.*\)$/"\2":"\1",/'
      ) | sed '$ s/,$//'

      printf "    },\n"
      printf '    "package": "'

      if [ "$dep" = "servo-fontconfig" ] || [ "$dep" = "servo-fontconfig-sys" ] ; then
        checksum="$(tar cz $dep-$ver | sha256sum | cut -f1 -d' ')"
        sed -i "s/^\(\"checksum $dep [^=]*\)= \".*$/\1= \"$checksum\"/" ../Cargo.lock

        printf "%s\"\n" "$checksum"
      else
        sha256sum "$crate" | cut -f1 -d' ' | sed 's/$/"/'
      fi

      printf "}\n"
    } | python -c "import sys, json; data = sys.stdin.read(); print json.dumps(json.loads(data), sort_keys=True, indent=4, separators=(',', ' : '))" > $dep-$ver/.cargo-checksum.json
  done
)

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 \
 \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;

CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
cargo build --release $CARGOTARGET

mkdir -p $PKG/usr/bin/

find target -name $PRGNAM -exec install -m 755 {} $PKG/usr/bin/$PRGNAM \;

find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

mkdir -p $PKG/usr/man/man1
install -m644 alacritty.man $PKG/usr/man/man1/alacritty.1

find $PKG/usr/man -type f -exec gzip -9 {} \;
for i in $( find $PKG/usr/man -type l ) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done

mkdir -p $PKG/usr/share/bash-completion/completions
install -m644 alacritty-completions.bash $PKG/usr/share/bash-completion/completions/alacritty

mkdir -p $PKG/usr/share/zsh/site-functions
install -m644 alacritty-completions.zsh $PKG/usr/share/zsh/site-functions/_alacritty

mkdir -p $PKG/usr/share/terminfo
tic -o $PKG/usr/share/terminfo alacritty.info

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a LICENSE-APACHE README.md alacritty.yml $PKG/usr/doc/$PRGNAM-$VERSION
mkdir -p $PKG/usr/share/applications
install -m 644 $PRGNAM.desktop $PKG/usr/share/applications
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

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

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