Ports: Make sed work on macOS

The ports `libvorbis`, `readline` and `timidity` would not install on
macOS as a result of using `sed -i` without an extension provided. GNU
sed is available through Homebrew, but it does not replace `sed` by
default.

Instead, provide a new `sed_in_place` function that calls `sed` with the
right arguments.

Ports/.port_include.sh

@@ -142,6 +142,14 @@ run_replace_in_file() {
  fi
 }
 
+sed_in_place() {
+ if [ "$(uname -s)" = "Darwin" ]; then
+ sed -i '' "${@}"
+ else
+ sed -i "${@}"
+ fi
+}
+
 get_new_config_sub() {
  config_sub="${1:-config.sub}"
  if [ ! -f "$workdir/$config_sub" ]; then

Ports/libvorbis/package.sh

@@ -11,5 +11,5 @@ depends=("libogg")
 post_install() {
  # Fix up broken libtool paths
  # FIXME: apply a proper libtool fix
- sed -i "s# /usr/local# ${SERENITY_INSTALL_ROOT}/usr/local#g" "${SERENITY_INSTALL_ROOT}"/usr/local/lib/libvorbis*.la
+ sed_in_place "s# /usr/local# ${SERENITY_INSTALL_ROOT}/usr/local#g" "${SERENITY_INSTALL_ROOT}"/usr/local/lib/libvorbis*.la
 }

Ports/readline/package.sh

@@ -15,5 +15,5 @@ configopts=(
 post_install() {
  # readline specifies termcap as a dependency in its pkgconfig file, without checking if it exists.
  # Remove it manually to keep other ports from discarding readline because termcap is supposedly missing.
- sed -i -e '/^Requires.private:/s/termcap//' "${SERENITY_INSTALL_ROOT}/usr/local/lib/pkgconfig/readline.pc"
+ sed_in_place '/^Requires.private:/s/termcap//' "${SERENITY_INSTALL_ROOT}/usr/local/lib/pkgconfig/readline.pc"
 }

Ports/timidity/package.sh

@@ -32,5 +32,5 @@ post_install() {
  timidity_cfg_path="${SERENITY_INSTALL_ROOT}/etc/timidity.cfg"
  mkdir -p "$(dirname ${timidity_cfg_path})"
  cp "${eaw_pats_host_dir}/timidity.cfg" "${timidity_cfg_path}"
- sed -i "s#^dir .*#dir ${eaw_pats_dir}#g" "${timidity_cfg_path}"
+ sed_in_place "s#^dir .*#dir ${eaw_pats_dir}#g" "${timidity_cfg_path}"
 }