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#!/command/with-contenv /usr/bin/bash
# shellcheck shell=bash
declare -r log_prefix="[init-tesseract-langs]"
install_languages() {
echo "Installing languages..."
read -ra langs <<<"$1"
# Check that it is not empty
if [ ${#langs[@]} -eq 0 ]; then
return
fi
# Build list of packages to install
to_install=()
for lang in "${langs[@]}"; do
pkg="tesseract-ocr-$lang"
if dpkg --status "$pkg" &>/dev/null; then
echo "${log_prefix} Package $pkg already installed!"
continue
else
to_install+=("$pkg")
fi
done
# Use apt only when we install packages
if [ ${#to_install[@]} -gt 0 ]; then
# Warn the user if they're not root, but try anyway
if [[ -n "${USER_IS_NON_ROOT}" ]]; then
echo "${log_prefix} ERROR: Unable to install language ${pkg} as non-root, startup may fail"
fi
apt-get --quiet update &>/dev/null
for pkg in "${to_install[@]}"; do
if ! apt-cache --quiet show "$pkg" &>/dev/null; then
echo "${log_prefix} Skipped $pkg: Package not found! :("
continue
fi
echo "${log_prefix} Installing package $pkg..."
if ! apt-get --quiet --assume-yes install "$pkg" &>/dev/null; then
echo "${log_prefix} Could not install $pkg"
exit 1
else
echo "${log_prefix} Installed $pkg"
fi
done
fi
}
echo "${log_prefix} Checking if additional teseract languages needed"
# Install additional languages if specified
if [[ -n "$PAPERLESS_OCR_LANGUAGES" ]]; then
install_languages "$PAPERLESS_OCR_LANGUAGES"
echo "${log_prefix} Additional packages installed"
else
echo "${log_prefix} No additional installs requested"
fi