From 63d8d2fc4e325badf4bcd5fce036ca7384664a5f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Konstantin=20Gru=CC=88ndger?= <kammermark@gmx.de>
Date: Thu, 28 Sep 2017 19:10:27 +0200
Subject: [PATCH] Implemented Naviter parser

---
 ogn/parser/parse.py   | 14 +++++++++++++-
 ogn/parser/pattern.py |  6 ++++++
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/ogn/parser/parse.py b/ogn/parser/parse.py
index e76758b..8ad23ca 100644
--- a/ogn/parser/parse.py
+++ b/ogn/parser/parse.py
@@ -3,6 +3,7 @@ from datetime import datetime
 
 from ogn.parser.utils import createTimestamp, parseAngle, kts2kmh, feet2m, fpm2ms
 from ogn.parser.pattern import PATTERN_APRS_POSITION, PATTERN_APRS_STATUS, PATTERN_RECEIVER_BEACON, PATTERN_AIRCRAFT_BEACON
+from ogn.parser.pattern import PATTERN_NAVITER_BEACON
 from ogn.parser.exceptions import AprsParseError, OgnParseError
 
 
@@ -95,7 +96,18 @@ def parse_lt24_beacon(aprs_comment):
 
 
 def parse_naviter_beacon(aprs_comment):
-    raise NotImplementedError("Naviter parser not implemented")
+    ac_match = re.search(PATTERN_NAVITER_BEACON, aprs_comment)
+    if ac_match:
+        return {'stealth': (int(ac_match.group('details'), 16) & 0b1000000000000000) >> 15 == 1,
+                'do_not_track': (int(ac_match.group('details'), 16) & 0b0100000000000000) >> 14 == 1,
+                'aircraft_type': (int(ac_match.group('details'), 16) & 0b0011110000000000) >> 10,
+                'address_type': (int(ac_match.group('details'), 16) & 0b0000001111110000) >> 4,
+                'reserved': (int(ac_match.group('details'), 16) & 0b0000000000001111),
+                'address': ac_match.group('id'),
+                'climb_rate': int(ac_match.group('climb_rate')) * fpm2ms if ac_match.group('climb_rate') else None,
+                'turn_rate': float(ac_match.group('turn_rate')) if ac_match.group('turn_rate') else None}
+    else:
+        raise OgnParseError(aprs_comment)
 
 
 def parse_skylines_beacon(aprs_comment):
diff --git a/ogn/parser/pattern.py b/ogn/parser/pattern.py
index 4093e1f..8a0dce2 100644
--- a/ogn/parser/pattern.py
+++ b/ogn/parser/pattern.py
@@ -4,6 +4,12 @@ import re
 PATTERN_APRS_POSITION = re.compile(r"^(?P<callsign>.+?)>(?P<dstcall>[A-Z0-9]+),((?P<relay>[A-Za-z0-9]+)\*)?.*,(?P<receiver>.+?):/(?P<time>\d{6})+(h|z)(?P<latitude>\d{4}\.\d{2})(?P<latitude_sign>N|S)(?P<symbol_table>.)(?P<longitude>\d{5}\.\d{2})(?P<longitude_sign>E|W)(?P<symbol>.)(?P<course_extension>(?P<course>\d{3})/(?P<ground_speed>\d{3}))?/A=(?P<altitude>\d{6})(?P<pos_extension>\s!W((?P<latitude_enhancement>\d)(?P<longitude_enhancement>\d))!)?(?:\s(?P<comment>.*))?$")
 PATTERN_APRS_STATUS = re.compile(r"^(?P<callsign>.+?)>(?P<dstcall>[A-Z0-9]+),.+,(?P<receiver>.+?):>(?P<time>\d{6})+h\s(?P<comment>.*)$")
 
+PATTERN_NAVITER_BEACON = re.compile("""
+    id(?P<details>[\dA-F]{4})(?P<id>[\dA-F]{6})\s
+    (?P<climb_rate>[+-]\d+)fpm\s
+    (?P<turn_rate>[+-][\d.]+)rot
+""", re.VERBOSE | re.MULTILINE)
+
 # The following regexp patterns are part of the ruby ogn-client.
 # source: https://github.com/svoop/ogn_client-ruby