From 1c15c0d5d1904c7d2628b1a091be2ff374212530 Mon Sep 17 00:00:00 2001
From: ed <s@ocv.me>
Date: Sun, 2 Nov 2025 13:12:13 +0000
Subject: [PATCH] mtag: add geotag.py

---
 bin/mtag/README.md |  5 +++++
 bin/mtag/geotag.py | 53 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 58 insertions(+)
 create mode 100755 bin/mtag/geotag.py

diff --git a/bin/mtag/README.md b/bin/mtag/README.md
index 4656fb05..bc742ef2 100644
--- a/bin/mtag/README.md
+++ b/bin/mtag/README.md
@@ -68,3 +68,8 @@ instead of affecting all volumes, you can set the options for just one volume li
 * `:c,mtp=key=f,audio-key.py`
 * `:c,mtp=.bpm=f,audio-bpm.py`
 * `:c,mtp=ahash,vhash=f,media-hash.py`
+
+
+# tips & tricks
+
+* to delete tags for all files below `blog*` and rescan that, `sqlite3 .hist/up2k.db "delete from mt where w in (select substr(w,1,16) from up where rd like 'blog%')";`
diff --git a/bin/mtag/geotag.py b/bin/mtag/geotag.py
new file mode 100755
index 00000000..dd6df91c
--- /dev/null
+++ b/bin/mtag/geotag.py
@@ -0,0 +1,53 @@
+import json
+import re
+import sys
+
+from copyparty.util import fsenc, runcmd
+
+
+"""
+uses exiftool to geotag images based on embedded gps coordinates in exif data
+
+adds four new metadata keys:
+    .gps_lat = latitute
+    .gps_lon = longitude
+    .masl = meters above sea level
+    city = "city, subregion, region"
+
+usage: -mtp crc32,md5,sha1,sha256b=ad,bin/mtag/cksum.py
+
+example: https://a.ocv.me/pub/blog/j7/8/?grid=0
+"""
+
+
+def main():
+    cmd = b"exiftool -api geolocation -n".split(b" ")
+    rc, so, se = runcmd(cmd + [fsenc(sys.argv[1])])
+    ptn = re.compile("([^:]*[^ :]) *: (.*)")
+    city = ["", "", ""]
+    ret = {}
+    for ln in so.split("\n"):
+        m = ptn.match(ln)
+        if not m:
+            continue
+        k, v = m.groups()
+        if k == "Geolocation City":
+            city[2] = v
+        elif k == "Geolocation Subregion":
+            city[1] = v
+        elif k == "Geolocation Region":
+            city[0] = v
+        elif k == "GPS Latitude":
+            ret[".gps_lat"] = "%.04f" % (float(v),)
+        elif k == "GPS Longitude":
+            ret[".gps_lon"] = "%.04f" % (float(v),)
+        elif k == "GPS Altitude":
+            ret[".masl"] = str(int(float(v)))
+    v = ", ".join(city).strip(", ")
+    if v:
+        ret["city"] = v
+    print(json.dumps(ret))
+
+
+if __name__ == "__main__":
+    main()