Add GPX output option
This commit is contained in:
Klaus-Uwe Mitterer
parent
b7476c5de2
commit
043f4a8569
1 changed files with 95 additions and 41 deletions
136
main.py
136
main.py
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@ -4,6 +4,8 @@ import configparser
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import pymysql
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GJSON = 0
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def getDatabase(path = "config.cfg"):
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config = configparser.RawConfigParser()
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config.read(path)
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@ -18,6 +20,83 @@ def getDatabase(path = "config.cfg"):
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return conn, cur
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def buildGJSON(data):
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output = """{
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"type": "FeatureCollection",
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"crs": { "type": "name", "properties": { "name": "urn:ogc:def:crs:OGC:1.3:CRS84" } },
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"features": [
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{ "type": "Feature",
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"properties": {
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"Name": null,
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"description": null,
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"timestamp": null,
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"begin": null,
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"end": null,
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"altitudeMode": null,
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"tessellate": -1,
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"extrude": 0,
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"visibility": -1,
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"drawOrder": null,
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"icon": null,
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"styleUrl": "#style",
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"styleHash": "1a1ac94e",
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"stroke": "#ffff00",
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"stroke_opacity": "0.4980392156862745",
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"stroke_width": "4",
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"fill": "#00ff00",
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"fill_opacity": "0.4980392156862745"
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},
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"geometry": {
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"type": "LineString",
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"coordinates": [
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"""
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for row in data:
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output += " [ %s, %s ],\n" % (row["lon"], row["lat"])
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output = "".join(output.rsplit(",", 1))
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output += """ ]
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}
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}
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]
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}"""
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headers = [["Content-Type", "application/vnd.geo+json"], ['Content-Disposition', 'attachment; filename="export.geojson"']]
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return headers, output
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def buildGPX(data):
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output = """<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
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<gpx xmlns="http://www.topografix.com/GPX/1/1" version="1.1" creator="pygps"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://www.topografix.com/GPX/1/1 http://www.topografix.com/GPX/1/1/gpx.xsd">
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<metadata>
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<name>export.gpx</name>
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<desc>GPS Data Export</desc>
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<author>
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<name>pygps</name>
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</author>
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</metadata>
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<trk>
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<trkseg>
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"""
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for row in data:
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output += """ <trkpt lat="%s" lon="%s">
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<time>%s</time>
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</trkpt>
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""" % (row["lat"], row["lon"], row["ts"].isoformat())
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output += """ </trkseg>
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</trk>
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</gpx>
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"""
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headers = [["Content-Type", "application/gpx+xml"], ['Content-Disposition', 'attachment; filename="export.gpx"']]
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return headers, output
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def application(env, re):
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if env["REQUEST_METHOD"] == "POST":
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args = cgi.parse_qs(env['wsgi.input'].readline().decode(), True)
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@ -127,6 +206,19 @@ def application(env, re):
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frm = on if on else args["from"][0] if "from" in args else None
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to = on if on else args["to"][0] if "to" in args else None
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if "format" in args:
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if args["format"][0] in ("json", "gjson", "geojson", "gj") or not args["format"]:
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builder = buildGJSON
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elif args["format"][0] == "gpx":
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builder = buildGPX
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else:
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re("400 Bad Request", [])
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yield "<h1>400 Bad Request</h1>".encode()
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yield "Unknown format: %s" % args["format"]
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return
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else:
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builder = buildGJSON
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frm = frm or "2000-01-01"
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to = to or datetime.datetime.now().strftime('%Y-%m-%d')
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@ -144,49 +236,11 @@ def application(env, re):
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sql = "SELECT ts, lat, lon FROM tracker WHERE device=%s AND DATE(ts)>=%s and DATE(ts)<=%s ORDER BY ts ASC;";
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cur.execute(sql, (device, frm, to))
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re("200 OK", [["Content-Type", "application/vnd.geo+json"], ['Content-Disposition', 'attachment; filename="export.geojson"']])
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data = cur.fetchall()
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output = """{
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"type": "FeatureCollection",
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"crs": { "type": "name", "properties": { "name": "urn:ogc:def:crs:OGC:1.3:CRS84" } },
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"features": [
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{ "type": "Feature",
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"properties": {
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"Name": null,
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"description": null,
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"timestamp": null,
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"begin": null,
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"end": null,
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"altitudeMode": null,
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"tessellate": -1,
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"extrude": 0,
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"visibility": -1,
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"drawOrder": null,
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"icon": null,
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"styleUrl": "#style",
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"styleHash": "1a1ac94e",
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"stroke": "#ffff00",
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"stroke_opacity": "0.4980392156862745",
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"stroke_width": "4",
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"fill": "#00ff00",
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"fill_opacity": "0.4980392156862745"
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},
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"geometry": {
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"type": "LineString",
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"coordinates": [
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"""
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for row in cur.fetchall():
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output += " [ %s, %s ],\n" % (row["lon"], row["lat"])
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output = "".join(output.rsplit(",", 1))
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output += """ ]
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}
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}
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]
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}"""
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headers, output = builder(data)
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re("200 OK", headers)
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cur.close()
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conn.close()
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