dst is crap

README.md

@@ -3,10 +3,16 @@ Find time now, in the past or future in any timezone or location.
 
 ## Usage
 ```
-python tww QUERY [--debug] [--full]
+python tww QUERY [--debug] [--full] [--show=<param>]
 ```
 
-* Supported `QUERY` types:
+* The param `--full` shows the full solutions that parsers came up with.
+* You can use `--show=<param>` to show a particular json entry from the default solution, separated by `->`. For example:
+  - `tww now --show="dt->locale_dt"`: Thu 13 May 2021 11:26:02 AM CET
+  - `tww 17:00 --show="dt->emoji_time"`: 🕔
+  - `tww time until Christmas --show="timedelta->diff->duration_machine"`: 0 years, 225 days, 12:30:33
+
+### Supported `QUERY` types:
   - Just time: `<datetime-like>`:
     - `now`
     - `in 5 hours`
@@ -40,6 +46,7 @@ python tww QUERY [--debug] [--full]
     - `timezone in Brazil`
   
 
+    
 Few more notes:
 - `<datetime-like>` is any time or time-like string - or example:
   - `2019-04-26 3:14`, `06:42` `27 January 1992`,

tww/lib.py

@@ -287,7 +287,7 @@ def find_from_offset(query):
     return None, []
 
 
-def resolve_timezone(query):
+def resolve_timezone(query, dt=None):
     if not query:
         query = "utc"
     # if the human_tz_loc contains /, assume it's a timezone which could be
@@ -343,8 +343,10 @@ def resolve_timezone(query):
         except UnknownTimeZoneError:
             pytz_result = type('pytz', (), {"zone": ""})
     tz_name = pytz_result.zone
-    tz_abbr = pytz_result.localize(datetime.now()).strftime('%Z') if tz_name else ""
-    tz_offset = pytz_result.localize(datetime.now()).strftime('%z') if tz_name else ""
+    tz_dst_seconds = pytz_result.dst(dt.replace(tzinfo=None) or datetime.now()).seconds
+    pytz_localized = pytz_result.localize(dt.replace(tzinfo=None) or datetime.now())
+    tz_abbr = pytz_localized.strftime('%Z') if tz_name else ""
+    tz_offset = pytz_localized.strftime('%z') if tz_name else ""
     return {
         "query": query,
         "normal_query": normal_query,
@@ -359,6 +361,8 @@ def resolve_timezone(query):
         "tz_name": tz_name,
         "tz_abbr": tz_abbr,
         "tz_offset": tz_offset,
+        "tz_dst_seconds": tz_dst_seconds,
+        "tz_is_dst": tz_dst_seconds != 0,
     }
 
 

tww/tokenizer.py

@@ -110,7 +110,7 @@ def timezone_mangle(dt_s: str, timezone_like_s: str):
         dt_s = "now"
     src_dt = dateparser_parse_dt(dt_s)
     logger.debug("Source time: {}".format(src_dt))
-    tz = resolve_timezone(timezone_like_s)
+    tz = resolve_timezone(timezone_like_s, src_dt)
     logger.debug("Destination timezone: {}".format(tz))
     if not tz:
         tz, dst_dt, offset = {}, src_dt, {}
@@ -270,6 +270,9 @@ def show_magic_results(obj, args, results=1):
     rv = []
     for solution in obj['solutions']:
         entry_proxy = Cut(solution, sep='->')
+        if args.show:
+            highlight_entry = args.show
+        else:
             highlight_entry = solution["highlight"]
         try:
             highlight_result = entry_proxy[highlight_entry]
@@ -277,7 +280,10 @@ def show_magic_results(obj, args, results=1):
             logger.debug("Exception from magic result: {} -> {}".format(highlight_entry, e))
             continue
         if args.handlers:
-            to_print = "{} -> {}".format(solution['handler'], highlight_result)
+            # TODO: not working yet:
+            user_handlers = args.handlers.split(',')
+            for user_handler in user_handlers:
+                to_print = "{} -> {}".format(user_handler, highlight_result)
         else:
             to_print = highlight_result
         rv.append(to_print)
@@ -306,6 +312,7 @@ def dt_pretty(dt):
         rv["locale_time"] = dt.strftime("%X")
         rv["locale_dt"] = dt.strftime("%c")
     rv["tz_offset"] = dt.strftime("%z")
+    rv["tz_name"] = dt.strftime("%Z")
     rv["hh:mm"] = dt.strftime("%H:%M")
     rv["emoji_time"] = time_to_emoji(dt)
     rv["unix_s"] = get_s_since_epoch(dt)
@@ -402,7 +409,8 @@ def parse_args():
     parser = argparse.ArgumentParser()
     parser.add_argument('query', nargs='*', default="", help="freeform")
     parser.add_argument('--locale', dest='locale')
-    parser.add_argument('--handlers', dest='handlers', action='store_true')
+    parser.add_argument('--handlers', dest='handlers')
+    parser.add_argument('--show', dest='show')
     parser.add_argument('--full', dest='full', action='store_true')
     parser.add_argument('--debug', dest='debug', action='store_true')
     args = parser.parse_args()