scandata: implement scandata_get_page_count function

derivermodule/scandata.py

@@ -64,6 +64,13 @@ def scandata_parse(scandata_path):
     return scandata
 
 
+def scandata_get_page_count(scandata):
+    """
+    Return the number of page elements in a parsed scandata object
+    """
+    return len(scandata.get('book', {}).get('pageData', {}).get('page', []))
+
+
 def scandata_get_skip_pages(scandata):
     """
     Returns a list of indexes of pages in scandata.xml that have