new: setup translations

scripts/update-translations.sh

@@ -0,0 +1,46 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+cd "$(dirname "${BASH_SOURCE[0]}")/.."
+
+# janky aaah
+domain=$(sed -n '/^\[package\]/,/^\[/s/^name = "\(.*\)"$/\1/p' Cargo.toml)
+version=$(sed -n '/^\[package\]/,/^\[/s/^version = "\(.*\)"$/\1/p' Cargo.toml)
+[ -n "$domain" ] || { echo "error: could not find the package name in Cargo.toml" >&2; exit 1; }
+dir=assets/translations
+pot=$dir/$domain.pot
+
+for tool in slint-tr-extractor msginit msgmerge msgcat; do
+    command -v "$tool" > /dev/null || { echo "error: '$tool' is not installed, see docs/TRANSLATIONS.md" >&2; exit 1; }
+done
+
+fresh=$(mktemp)
+trap 'rm -f "$fresh"' EXIT
+
+find ui -name '*.slint' | LC_ALL=C sort | xargs slint-tr-extractor --package-name "$domain" --package-version "$version" -o "$fresh"
+
+msgcat --no-wrap "$fresh" > /dev/null || { echo "error: the extracted template is not valid, is a translator comment longer than 76 characters?" >&2; exit 1; }
+
+if [ -f "$pot" ] && diff -q <(grep -v '^"POT-Creation-Date:' "$pot") <(grep -v '^"POT-Creation-Date:' "$fresh") > /dev/null; then
+    echo "$pot is up to date"
+else
+    cp "$fresh" "$pot"
+    echo "updated $pot"
+fi
+
+for lang in "$@"; do
+    po=$dir/$lang/LC_MESSAGES/$domain.po
+    if [ -e "$po" ]; then
+        echo "$po already exists" >&2
+    else
+        mkdir -p "$(dirname "$po")"
+        msginit --no-translator --locale="$lang" --input="$pot" --output-file="$po"
+    fi
+done
+
+for po in "$dir"/*/LC_MESSAGES/"$domain".po; do
+    [ -e "$po" ] || continue
+    msgmerge --update --backup=none --quiet "$po" "$pot"
+    echo "merged into $po"
+done