Added time parse for backup files

requirements.txt

@@ -0,0 +1,2 @@
+pytz
+python-dateutil

test_data/property_files/example-new.json

@@ -9,6 +9,7 @@
     "app_label": "Luis.Babyphone",
     "app_version_code": "2000072",
     "app_version_name": "2.0.72",
+    "backup_time": 1604049161.0,
     "generation": "1",
     "has_dbdata": "0",
     "has_prefsdata": "0",

test_data/property_files/example-old.json

@@ -9,6 +9,7 @@
     "app_label": "QPython3",
     "app_version_code": "103",
     "app_version_name": "1.0.3",
+    "backup_time": 1509521922.0,
     "generation": "1",
     "has_dbdata": "0",
     "has_prefsdata": "0",

tibi_hardlinks/backup_parser.py

@@ -1,4 +1,8 @@
 import re
+from dateutil.parser import parse as datetime_parse, ParserError
+import pytz
+
+tzinfos = {name: pytz.timezone(name) for name in pytz.all_timezones}
 
 
 def parse_property_text(text):
@@ -6,6 +10,12 @@ def parse_property_text(text):
     key_value_regex = re.compile(r"(?P<key>^[^=]+)=(?P<value>.*)")
     lines = text.split("\n")
     for line in lines:
+        if line.startswith("#"):
+            try:
+                time = datetime_parse(line.lstrip("#"), tzinfos=tzinfos)
+                properties["backup_time"] = time.astimezone(pytz.UTC).timestamp()
+            except ParserError:
+                pass
         match = key_value_regex.match(line)
         if match:
             key = match.group("key")