[Printer] Handles pdf with fancy encoding in metadata

printer/utils.py

@@ -32,9 +32,11 @@ def pdfinfo(file_path):
     cmd_output = subprocess.check_output(['/usr/bin/pdfinfo', file_path])
     for line in cmd_output.splitlines():
         for label in labels:
+            try:
                 if label in line.decode():
                     output[label] = _extract(line)
-
+            except UnicodeDecodeError:
+                pass
     return output
 
 

printer/views.py

@@ -68,8 +68,11 @@ def new_job(request):
                 job_instance.print_operation = print_operation
                 job_instance.user=request.user
                 metadata = pdfinfo(request.FILES['form-%s-file' % count].temporary_file_path())
+                if "Pages" in metadata:
                     job_instance.pages = metadata["Pages"]
                     job_instance.save()
+                else:
+                    job_form.erros[count] = {'file': ['Invalid PDF']}
             except KeyError:
                 job_form.errors[count] = {'file': ['This field is required.']}
         if job_formset.total_error_count() == 0: