Lang: Plural strings

IssueID #192

2 files changed, 36 insertions, 15 deletions

diff --git a/po/compile.py b/po/compile.py
index cfe837ea..0a0eab91 100755
--- a/po/compile.py
+++ b/po/compile.py
@@ -38,29 +38,46 @@ def unquote(string):
     
 def parse_po(src):
     messages = []
-    is_multi = False
-    msg_id, msg_str = None, None
+    is_multi = False  # string is multiple lines
+    is_plural = False
+    msg_id, msg_str, msg_index = None, None, None
     for line in open(src, 'rt', encoding='utf-8').readlines():
         line = line.strip()
         if is_multi:
-            if len(line) == 0:
+            if len(line) == 0 or line[0] != '"':
                 if msg_id:
-                    messages.append((msg_id, msg_str))
+                    messages.append((msg_id, msg_str, msg_index))
                 is_multi = False
-                continue
+                if len(line) == 0: continue
             else:
                 msg_str += unquote(line)
-        if line.startswith('msgid'):
+        if line.startswith('msgid_plural'):
+            msg_id = unquote(line[12:])
+            is_plural = True
+        elif line.startswith('msgid'):
             msg_id = unquote(line[6:])
-        elif line == 'msgstr ""':
-            # Multiline string.
-            is_multi = True
-            msg_str = ''
-        elif line.startswith('msgstr'):
-            msg_str = unquote(line[7:])
-            if msg_id:
-                messages.append((msg_id, msg_str))
-    return messages
+            is_plural = False
+        elif line.startswith('msgstr'):            
+            if line[6] == '[':
+                msg_index = int(line[7])
+                line = line[9:]
+            else:
+                msg_index = None
+                line = line[7:]
+            if line.endswith(' ""'):
+                is_multi = True
+                msg_str = ''
+            else:
+                msg_str = unquote(line)
+                if msg_id:
+                    messages.append((msg_id, msg_str, msg_index))
+    # Apply plural indices to ids.
+    pluralized = []
+    for msg_id, msg_str, msg_index in messages:
+        if not msg_index is None:
+            msg_id = f'{msg_id[:-1]}{msg_index}'
+        pluralized.append((msg_id, msg_str))
+    return pluralized
     
 
 if MODE == 'compile':
@@ -76,6 +93,7 @@ if MODE == 'compile':
 elif MODE == 'new':
     messages = parse_po('en.po')
     f = open('new.po', 'wt', encoding='utf-8')
+    # TODO: plurals
     for msg_id, _ in messages:
         print(f'\nmsgid "{msg_id}"\nmsgstr ""\n', file=f)
 
diff --git a/po/en.po b/po/en.po
index 36f30eda..ad7864b3 100644
--- a/po/en.po
+++ b/po/en.po
@@ -1,3 +1,4 @@
+# Alt-text of the preformatted logo.
 msgid "about.logo"
 msgstr "ASCII art: the word \"Lagrange\" using a large font"
 
@@ -73,9 +74,11 @@ msgstr "Find on Page"
 msgid "macos.menu.find"
 msgstr "Find"
 
+# Used on iOS. "Files" refers to Apple's iOS app where you can pick an iCloud folder.
 msgid "menu.save.files"
 msgstr "Save to Files"
 
+# Used on desktop operating systems. "Downloads" refers to the user's configured downloads directory.
 msgid "menu.save.downloads"
 msgstr "Save to Downloads"