Add latest translation files

lib/l10n/collect_translations.py

@@ -0,0 +1,93 @@
+"""
+Collect translation files into a single directory,
+where they can be accessed by the flutter i18n library.
+
+Translations provided from crowdin are located in subdirectories,
+but we need the .arb files to appear in this top level directory
+to be accessed by the app.
+
+So, simply copy them here!
+
+"""
+
+import os
+import shutil
+import re
+import json
+
+def process_locale_file(filename):
+    """
+    Process a locale file after copying
+
+    - Ensure the 'locale' matches
+    """
+
+    # Extract the locale name from the filename
+    f = os.path.basename(filename)
+    locale = re.search(r"^app\_(\w+)\.arb$", f).groups()[0]
+
+    # TODO: Use JSON processing instead of manual
+    # Need to work out unicode issues for this to work
+
+    with open(filename, 'r', encoding='utf-8') as input_file:
+
+        lines = input_file.readlines()
+
+    with open(filename, 'w', encoding='utf-8') as output_file:
+        # Using JSON processing would be simpler here,
+        # but it does not preserve unicode data!
+        for line in lines:
+            if '@@locale' in line:
+                new_line = f'    "@@locale": "{locale}"'
+
+                if ',' in line:
+                    new_line += ','
+                
+                new_line += '\n'
+
+                line = new_line
+
+            output_file.write(line)
+
+
+def copy_locale_file(path):
+    """
+    Locate and copy the locale file from the provided directory
+    """
+
+    here = os.path.abspath(os.path.dirname(__file__))
+
+    for f in os.listdir(path):
+
+        src = os.path.join(path, f)
+        dst = os.path.join(here, 'collected', f)
+
+        if os.path.exists(src) and os.path.isfile(src) and f.endswith('.arb'):
+
+            shutil.copyfile(src, dst)
+            print(f"Copied file '{f}'")
+
+            process_locale_file(dst)
+
+
+if __name__ == '__main__':
+
+    here = os.path.abspath(os.path.dirname(__file__))
+
+    for item in os.listdir(here):
+
+        # Ignore the output directory
+        if item == 'collected':
+            continue
+
+        f = os.path.join(here, item)
+
+        if os.path.exists(f) and os.path.isdir(item):
+            copy_locale_file(f)
+
+    # Ensure the translation source file ('app_en.arb') is copied also
+    # Note that this does not require any further processing
+    src = os.path.join(here, 'app_en.arb')
+    dst = os.path.join(here, 'collected', 'app_en.arb')
+
+    shutil.copyfile(src, dst)