The Japanese translation has a number of plurals with "one" quantities

but no "other", which crashes. "Fix" these by making the copy script
turn one into other, which may well make sense given Japanese
grammer. At any rate it prevents crashes until I can work it out with
the translator and/or weblate.

xwords4/android/scripts/copy-strings.py

@@ -9,7 +9,9 @@ import re, sys, os, getopt
 from lxml import etree
 
 s_prefix = 'XLATE ME: '
-
+# languages in which it's ok to make a standalone quantity="one" into
+# quantity="other"
+g_oneToOthers = ['values-ja']
 
 sComment = """
     DO NOT EDIT THIS FILE!!!!
@@ -31,34 +33,90 @@ def sameAsEnglishPlural(engNames, strElem):
              and sameOrSameWithPrefix( str, strs['other'] )
     return result
 
-def pluralsIsSame(engNames, plurals):
-    different = False           # all children duplicates of English
-    strings = engNames[plurals.get('name')]['strings']
+# If has a one and no (or empty) other, convert the one to other
+def tryConvertOne( plurals ):
+    quantities = {}
+    for item in plurals.getchildren():
+        quantities[item.get("quantity")] = item
+
+    use = False
+    if "one" in quantities:
+        if "other" in quantities:
+            text = quantities['other'].text
+            if not text or 0 == len(text):
+                use = True
+        else:
+            use = True
+
+    if use:
+        print "converting", plurals.get('name')
+        plurals.remove(quantities['other'])
+        quantities['one'].set('quantity', 'other')
+
+def pluralsIsBogus(engNames, plurals, verbose):
+    haveOther = False           # will crash without one
+    bogus = False
     for item in plurals.getchildren():
-        quantity = item.get('quantity')
         text = item.text
         if not text or 0 == len(text):
-            print "bogus empty item in", plurals.get('name')
+            bogus = True
+            if verbose:
+                quantity = item.get("quantity")
+                print 'dropping plurals {name} because of empty/missing \"{quantity}\"' \
+                    .format(name=plurals.get("name"), quantity=quantity )
+            break
+        if item.get("quantity") == "other":
+            haveOther = True
+
+    if verbose and not bogus and not haveOther:
+        print "dropping plurals {name} because no \"other\" quantity" \
+            .format(name=plurals.get("name"))
+            
+    return bogus or not haveOther
+
+def pluralsIsSame(engNames, plurals):
+    different = False           # all children duplicates of English
+    engItem = engNames[plurals.get('name')]
+    strings = engItem['strings']
+    for item in plurals.getchildren():
+        text = item.text
+        if not text or 0 == len(text):
+            print "bogus empty plurals item in", plurals.get('name')
+            engItem = engItem
             sys.exit(1)
+
+        quantity = item.get('quantity')
         if quantity in strings:
             if sameOrSameWithPrefix( strings[quantity], text ):
                 different = True
     return different
 
-def checkPlurals( engNames, elem ):
+# path will be something like res_src/values-pt/strings.xml. We want
+# the next-to-last entry.
+def valuesDir( path ):
+    splits = path.split('/')
+    return splits[-2]
+
+def checkPlurals( engNames, elem, src, verbose ):
     name = elem.get('name')
+    ok = True
     if not name in engNames or not 'plurals' == engNames[name]['type']:
         print 'plurals', name, 'not in engNames or not a plurals there'
         ok = False
-    elif pluralsIsSame(engNames, elem):
+
+    if ok and valuesDir(src) in g_oneToOthers:
+        tryConvertOne( elem )
+
+    if ok and pluralsIsBogus(engNames, elem, verbose):
         ok = False
-    else:
+    if ok and pluralsIsSame(engNames, elem):
+        ok = False
+    if ok:
         for item in elem.getchildren():
             if 0 == len(item.text):
                 ok = False
                 print 'bad empty item', name
                 sys.exit(1)
-        ok = True
     return ok
 
 def loadPlural(plural):
@@ -78,7 +136,10 @@ def writeDoc(doc, src, dest):
 
 def checkOrConvertString(engNames, elem, verbose):
     name = elem.get('name')
-    if not name in engNames or elem.text.startswith(s_prefix):
+    if not elem.text:
+        print "elem", name, "is empty"
+        sys.exit(1)
+    elif not name in engNames or elem.text.startswith(s_prefix):
         ok = False
     elif not 'string' == engNames[name]['type']:
         if 'plurals' == engNames[name]['type']:
@@ -111,7 +172,7 @@ def checkAndCopy( parser, engNames, src, dest, verbose ):
             elem.getparent().remove(elem)
 
     for elem in doc.findall('plurals'):
-        if not checkPlurals(engNames, elem):
+        if not checkPlurals(engNames, elem, src, verbose):
             elem.getparent().remove(elem)
 
     writeDoc(doc, src, dest)
@@ -119,7 +180,7 @@ def checkAndCopy( parser, engNames, src, dest, verbose ):
 def main():
     # add these via params later
     excepts = ['values-ca_PS', 'values-ba_CK']
-    verboses = ['values-fr']
+    verboses = ['values-ja']
 
     # summarize the english file
     wd = os.path.dirname(sys.argv[0])
@@ -128,10 +189,10 @@ def main():
 
     engFormats = {}
     parser = etree.XMLParser(remove_blank_text=True, encoding="utf-8")
-    doc = etree.parse(path, parser)
+    engDoc = etree.parse(path, parser)
     pat = re.compile( '(%\d\$[sd])', re.DOTALL | re.MULTILINE )
     for typ in ['string', 'plurals']:
-        for elem in doc.findall(typ):
+        for elem in engDoc.findall(typ):
             name = elem.get('name')
             item = { 'type' : typ }
             if typ == 'string':