From 21a3ae70b5cbd90b98a53767d71b72f1ebf4c5e1 Mon Sep 17 00:00:00 2001
From: Ian Renton <ian@ianrenton.com>
Date: Tue, 23 Jun 2026 06:38:41 +0100
Subject: [PATCH] Add support for DME. Closes #114.

---
 core/constants.py      |  1 +
 core/sig_utils.py      | 14 ++++++++++++++
 data/spot.py           |  2 +-
 webassets/js/ui-ham.js |  1 +
 4 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/core/constants.py b/core/constants.py
index d114a22..d763175 100644
--- a/core/constants.py
+++ b/core/constants.py
@@ -32,6 +32,7 @@ SIGS = [
     SIG(name="Tiles", description="Tiles on the Air", ref_regex=r"[A-Za-z]{2}[0-9]{2}[A-Za-z]{2}"),
     SIG(name="WAB", description="Worked All Britain", ref_regex=r"[A-Z]{1,2}[0-9]{2}"),
     SIG(name="WAI", description="Worked All Ireland", ref_regex=r"[A-Z][0-9]{2}"),
+    SIG(name="DME", description="Diplomas de Municipios Españoles", ref_regex=r"\d{4,5}"),
     SIG(name="TOTA", description="Toilets on the Air", ref_regex=r"T\-[0-9]{2}")
 ]
 
diff --git a/core/sig_utils.py b/core/sig_utils.py
index aacd246..9d0fa80 100644
--- a/core/sig_utils.py
+++ b/core/sig_utils.py
@@ -7,6 +7,9 @@ from core.cache_utils import SEMI_STATIC_URL_DATA_CACHE
 from core.constants import SIGS, HTTP_HEADERS
 from core.geo_utils import wab_wai_square_to_lat_lon
 
+with open("datafiles/dme-geodata.csv", encoding="utf-8") as _f:
+    _DME_INDEX = {row["dme"]: row for row in csv.DictReader(_f)}
+
 
 def get_ref_regex_for_sig(sig):
     """Utility function to get the regex string for a SIG reference for a named SIG. If no match is found, None will be returned."""
@@ -188,6 +191,17 @@ def populate_sig_ref_info(sig_ref):
                     sig_ref.longitude = ll[1]
                 except:
                     logging.debug("Invalid lat/lon received for reference")
+        elif sig.upper() == "DME":
+            row = _DME_INDEX.get(ref_id)
+            if row:
+                sig_ref.name = row["municipio"] + ", " + row["provincia"]
+                sig_ref.latitude = float(row["lat"]) if row.get("lat") else None
+                sig_ref.longitude = float(row["lon"]) if row.get("lon") else None
+                if sig_ref.latitude and sig_ref.longitude:
+                    try:
+                        sig_ref.grid = latlong_to_locator(sig_ref.latitude, sig_ref.longitude, 6)
+                    except Exception:
+                        logging.debug("Invalid lat/lon received for reference")
     except Exception:
         logging.warning("Failed to look up sig_ref info for " + sig + " ref " + ref_id, exc_info=True)
     return sig_ref
diff --git a/data/spot.py b/data/spot.py
index 3cb61a4..59974ae 100644
--- a/data/spot.py
+++ b/data/spot.py
@@ -263,7 +263,7 @@ class Spot:
                 # If so, add that to the sig_refs list for this spot.
                 ref_regex = get_ref_regex_for_sig(found_sig)
                 if ref_regex:
-                    ref_matches = re.finditer(r"(^|\W)" + found_sig + r"($|\W)(" + ref_regex + r")($|\W)", self.comment,
+                    ref_matches = re.finditer(r"(^|\W)" + found_sig + r"([ -])(" + ref_regex + r")($|\W)", self.comment,
                                               re.IGNORECASE)
                     for ref_match in ref_matches:
                         self._append_sig_ref_if_missing(SIGRef(id=ref_match.group(3).upper(), sig=found_sig))
diff --git a/webassets/js/ui-ham.js b/webassets/js/ui-ham.js
index 91bae9c..8058dc1 100644
--- a/webassets/js/ui-ham.js
+++ b/webassets/js/ui-ham.js
@@ -335,6 +335,7 @@ const SIG_ICONS = {
     "WWTOTA": "fa-tower-observation",
     "WAB": "fa-table-cells-large",
     "WAI": "fa-table-cells-large",
+    "DME": "fa-building",
     "Tiles": "fa-square",
     "TOTA": "fa-toilet"
 }