[bugfix] fixed footer output to produce valid html when using a logo

new parameters in for paramters.yaml file:
  - added parameter logo_alt_text
  - added parameter logo_height

survBot.py

@@ -537,11 +537,13 @@ class SurveillanceBot(object):
 
                 # write footer with optional logo
                 logo_file = self.parameters.get('html_logo')
+                logo_alt_text = self.parameters.get('logo_alt_text')
+                logo_height = self.parameters.get('logo_height')
                 if not os.path.isfile(pjoin(self.outpath_html, logo_file)):
                     logging.info(f'Specified file {logo_file} not found.')
                     logo_file = None
 
-                outfile.write(html_footer(footer_logo=logo_file))
+                outfile.write(html_footer(footer_logo=logo_file, alt_text=logo_alt_text, height=logo_height))
 
         except Exception as e:
             logging.info(f'Could not write HTML table to {fnout}:')

write_utils.py

@@ -48,14 +48,15 @@ def finish_html_table():
     return '</table>\n'
 
 
-def html_footer(footer_logo=None):
-    footer = ['</body>']
+def html_footer(footer_logo=None, alt_text='Logo', height=30):
     if footer_logo:
-        logo_items = [f'<div class="footer">',
-                      f'  <img style="float: right; padding: 10px;" src="{footer_logo}" height=30px>',
-                      f'</div>']
-        footer += logo_items
-    footer.append('</html>\n')
+        footer = [f'<div class="footer">',
+                  f'  <img style="float: right; padding: 10px;" src="{footer_logo}" height={height} alt="{alt_text}">',
+                  f'</div>']
+    else:
+        footer = []
+    footer.append('</body>')
+    footer.append('</html>')
 
     footer = _convert_to_textstring(footer)
     return footer