Shell script for checking gettext .po files for missing translations

check_missing_translations.sh

#!/bin/bash

# Script generated by ChatGPT, no edits
# Example: ./check_missing_translations.sh apps/my_app_web/priv/gettext/ja

# Ensure the script is given an argument (the folder to check)
if [ "$#" -ne 1 ]; then
  echo "Usage: $0 <locale_folder>"
  exit 1
fi

# Store the name of the folder and construct the LC_MESSAGES path
folder="$1"
lc_messages_folder="$folder/LC_MESSAGES"

# Check if the folder exists and is readable
if [ ! -d "$lc_messages_folder" ] || [ ! -r "$lc_messages_folder" ]; then
  echo "LC_MESSAGES folder doesn't exist or is not readable"
  exit 1
fi

# Initialize global missing count
global_missing_count=0

# Function to check a single .po file
check_po_file() {
  local file="$1"
  local ignore_first=true
  local missing_count=0
  local last_msgid=""

  while read -r line; do
    if [[ "$line" =~ ^msgid\ \"(.*)\" ]]; then
      last_msgid="${BASH_REMATCH[1]}"
    fi

    if [ "$line" = 'msgstr ""' ]; then
      if [ "$ignore_first" = true ]; then
        ignore_first=false
      else
        echo "  Missing translation for msgid \"$last_msgid\""
        ((missing_count++))
      fi
    fi
  done < "$file"

  if [ "$missing_count" -gt 0 ]; then
    echo "In $file: Found $missing_count missing translations."
    ((global_missing_count+=missing_count))
  else
    echo "In $file: No missing translations found."
  fi
}

# Iterate through all .po files in the LC_MESSAGES folder
for po_file in "$lc_messages_folder"/*.po; do
  check_po_file "$po_file"
done

# Output final results
if [ "$global_missing_count" -gt 0 ]; then
  echo "Total missing translations across all files: $global_missing_count"
  exit 1  # Exit with a non-zero status code to indicate missing translations
else
  echo "No missing translations found across all files."
  exit 0  # Exit normally
fi