# Description: the Rust language, binary version
# URL: https://rust-lang.org/
# Maintainer: John McQuah, jmcquah at disroot dot org
# Depends on: llvm

name=rust-bin
version=1.89.0
release=1
LIBC=$(awk -v RS="" -v FS="\n" '/\nusr\/lib\/libc.so\n/ { print $1 }' /var/lib/pkg/db)
[ "$LIBC" != glibc ] || LIBC=gnu
source=(https://static.rust-lang.org/dist/rust-$version-x86_64-unknown-linux-$LIBC.tar.gz)

build() {
  cd rust-$version-x86_64-unknown-linux-$LIBC
  ./install.sh --prefix=/usr --destdir=$PKG --disable-ldconfig

  # clean up junk files
  mv $PKG/usr/libexec/* $PKG/usr/lib
  rmdir $PKG/usr/libexec
  rm -rf $PKG/usr/share/doc
  prt-get isinst bash-completion >/dev/null || rm -rf $PKG/usr/etc/bash_completion.d
  prt-get isinst zsh >/dev/null || rm -rf $PKG/usr/share/zsh
  rm -f $PKG/usr/lib/rustlib/{install.log,uninstall.sh}
}

make_footprint() {
  pkginfo -f "$PKGMK_PACKAGE_DIR/$name#$version-$release.pkg.tar.$PKGMK_COMPRESSION_MODE" \
    | sed -e 's,\(gnu\|musl\)\(/\|$\),LIBC\2,' \
          -e '/[0-9a-f]\{16\}/d; /lib\/self-contained/d' \
          -e '/librustc-stable.*\(dfsan\|safestack\).a/d' \
          -e '/libLLVM.*19/d' | sort -k 3
  # lib/self-contained/ path only appears in the musl tarball,
  # libLLVM.*19 and librustc-stable.* paths only appear in the glibc tarball.
  # Filenames with 16-digit random hashes will also be different between the
  # two tarballs. Delete such paths here, and the same footprint file can 
  # serve for both libc providers.
}

check_signature() {
  # The corresponding function in the original pkgmk relies on .signature 
  # itself for the list of filenames. For a flexible port accommodating 
  # multiple libc providers, signify must be called with a truncated 
  # list of filenames, otherwise it expects to find on disk all the files 
  # mentioned in .signature
  local reqfiles=(Pkgfile .footprint)
  local SIGNIFY_ARGS=(-q -C -x "$PKGMK_ROOT/$PKGMK_SIGNATURE")
  cd "$PKGMK_WORK_DIR"
  for FILE in "${reqfiles[@]}"; do
    [ -e "$FILE" ] || ln -s "$PKGMK_ROOT/$FILE" .
  done
  for FILE in "${source[@]}"; do
    [ -e "${FILE##*/}" ] || ln -s $(get_filename -a "$FILE") .
    reqfiles+=("${FILE##*/}")
  done
  [ -r "$PKGMK_PUBLICKEY" ] && SIGNIFY_ARGS+=(-p "$PKGMK_PUBLICKEY")
  err=$(/usr/bin/signify "${SIGNIFY_ARGS[@]}" "${reqfiles[@]}" 2>&1)
  RESULT=$?

  # remove soft links
  find "$PKGMK_WORK_DIR" -maxdepth 1 -mindepth 1 -type l -delete

  cd "$PKGMK_ROOT"
  if [ $RESULT -ne 0 ]; then
    if [ "$err" = "signify: signature verification failed" ]; then
      error "Failed verifying cryptographic digest"
    else
      error "Signature mismatch found:"
      echo "$err" | while read n; do echo 'MISMATCH	'${n%%:*}; done
    fi

    [ "$PKGMK_KEEP_WORK" = "yes" ] || rm -rf "$PKGMK_WORK_DIR"

    error "Building '$TARGET' failed."
    exit $E_SIGNATURE
  fi

  if [ "$PKGMK_CHECK_SIGNATURE" = "yes" ]; then
    [ "$PKGMK_KEEP_WORK" = "yes" ] || rm -rf "$PKGMK_WORK_DIR"
    info "Signature ok."
    exit 0
  fi
}