small bugfixes

systems.py

@@ -183,7 +183,7 @@ def create_output_doc(csv_path, gitlab_projects, input_docs, template_path):
 def parse_csv(csv_file, projects, docs):
   issues = []
   with open(csv_file, 'r', encoding='utf-8-sig') as f:
-    sample = f.read(1024)
+    sample = f.readline()
     f.seek(0)
     dialect = csv.Sniffer().sniff(sample) # find out the delimeter type
     has_header = csv.Sniffer().has_header(sample)
@@ -210,13 +210,16 @@ def parse_csv(csv_file, projects, docs):
       sys.exit(-1)
 
     for row in reader:
+      # skip empty lines
+      if len(' '.join(row).strip()) == 0:
+        continue
       project_url_or_path = None
       # try URL first
       if project_url_idx is not None:
         if len(row[project_url_idx]) > 0:
           project_url_or_path = row[project_url_idx]
       # If URL failed, try subgroup/projectname
-      if project_url_or_path is None:
+      if project_url_or_path is None and subgroup_idx is not None and project_name_idx is not None:
         if len(row[subgroup_idx]) > 0 and len(row[project_name_idx]) > 0:
           project_url_or_path = row[subgroup_idx] + '/' + row[project_name_idx]
       project = helpers.find_project(projects, project_url_or_path)