Add script to update translation files from Crowdin

scripts/update_language_files.sh

@@ -0,0 +1,27 @@
+#!/bin/sh
+
+set -e
+
+# Since I couldn't get crowdin-cli to work yet, I'm doing things a bit more
+# manually for now. The process is as follows:
+#
+# 1. Download the translations from Crowdin as a zip file
+# 2. Unzip the file
+# 3. Run this script with the path to the unzipped directory as an argument
+#
+# Requires jq (1.7 or later): https://github.com/jqlang/jq
+
+if [ "$#" -ne 1 ]; then
+    echo "Usage: $0 <download_dir>"
+    exit 2
+fi
+
+download_dir="$1"
+
+for d in "$download_dir"/*
+do
+    # We need to remove empty strings from the JSON files; those are the ones
+    # that haven't been translated yet. Crowdin has an option to skip these when
+    # exporting, but unfortunately it doesn't work for json files.
+    jq 'del(..|select(. == ""))' < "$d/en.json" > pkg/i18n/translations/$(basename "$d").json
+done