From 39c2ed076f861774816d3613ac29d532828fb19b Mon Sep 17 00:00:00 2001
From: Sanj <b@pad.ma>
Date: Sat, 25 Feb 2012 00:19:10 +0530
Subject: [PATCH] added csv2kml.py

---
 indianrails/trains/csv2kml.py | 112 ++++++++++++++++++++++++++++++++++
 indianrails/trains/imports.py |   2 +-
 2 files changed, 113 insertions(+), 1 deletion(-)
 create mode 100644 indianrails/trains/csv2kml.py

diff --git a/indianrails/trains/csv2kml.py b/indianrails/trains/csv2kml.py
new file mode 100644
index 0000000..77e44c2
--- /dev/null
+++ b/indianrails/trains/csv2kml.py
@@ -0,0 +1,112 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+import csv
+import urllib
+import urllib2
+import json
+import os
+import time
+import sqlite3
+try:
+    import xml.etree.ElementTree as ET
+except:
+    import elementtree.ElementTree as ET
+
+
+def geo_lookup(address):
+    path = os.path.expanduser('~/.ox')
+    if not os.path.exists(path):
+        os.makedirs(path)
+    path = os.path.join(path, 'geo.sqlite')
+
+    conn = sqlite3.connect(path, timeout=10)
+    conn.text_factory = str
+
+    c = conn.cursor()
+    c.execute('''CREATE TABLE IF NOT EXISTS geo (query varchar(1024) unique, result text)''')
+    conn.commit()
+
+    c.execute('SELECT result FROM geo WHERE query = ?', (address, ))
+    for row in c:
+        return json.loads(row[0])
+
+    url = 'http://maps.google.com/maps/geo?q=%s&output=json&sensor=false'%urllib.quote(address.encode('utf8'))
+
+    #print url
+    u = urllib2.urlopen(url)
+    data = json.load(u)
+    u.close()
+    if data[u'Status'][u'code'] == 620:
+        print "to fast"
+        print data
+    c.execute(u"INSERT OR REPLACE INTO geo VALUES (?, ?)", (address, json.dumps(data)))
+    conn.commit()
+    c.close()
+    conn.close()
+    time.sleep(0.3)
+    return data
+
+def get_coordinates(address):
+    return geo_lookup(address).get("Placemark", [{}])[0].get("Point", {}).get("coordinates")
+
+def save_kml(addresses, filename):
+    kml = ET.Element('kml')
+    kml.attrib['xmlns'] = 'http://www.opengis.net/kml/2.2'
+    d = ET.SubElement(kml, "Document")
+    name = ET.SubElement(d, "name")
+    name.text = os.path.splitext(filename)[0]
+    for data in addresses:
+        address = '' #FIXME FORMAT csv data here
+        info = '' #FIXME FORMAT data to be display in kml
+        c = get_coordinates(address)
+        if c:
+            place = ET.SubElement(d, "Placemark")
+            name = ET.SubElement(place, "name")
+            name.text = person
+            description = ET.SubElement(place, "description")
+            description.text = info
+            point = ET.SubElement(place, "Point")
+            coordinates = ET.SubElement(point, "coordinates")
+            coordinates.text = ', '.join(map(str, c))
+        else:
+            print address, "failed"
+    f = open(filename, "w")
+    data = '<?xml version="1.0" encoding="UTF-8"?>'+ET.tostring(kml)
+    f.write(data.encode('utf-8'))
+    f.close()
+
+def load_csv(filename):
+    reader = csv.reader(open(filename, 'rb'))
+    keys = []
+    data = []
+    for row in reader:
+        if not keys:
+            keys = row
+        else:
+            r = {}
+            i = 0
+            for i in range(0, len(row)):
+                r[keys[i].decode('utf-8')] = row[i].decode('utf-8')
+            data.append(r)
+    return data
+
+if __name__ == '__main__':
+    from optparse import OptionParser
+    import sys
+
+    usage = "Usage: %prog [options] csv [kml]"
+    parser = OptionParser(usage=usage)
+    (opts, args) = parser.parse_args()
+
+    if len(args) < 1:
+        parser.print_help()
+        sys.exit(-1)
+
+    csvf = args[0]
+    if len(args) == 2:
+        kml = args[1]
+    else:
+        kml = "%s.kml" % os.path.splitext(csvf)[0]
+    addresses = load_csv(csvf)
+    save_kml(addresses, kml)
+
diff --git a/indianrails/trains/imports.py b/indianrails/trains/imports.py
index 5270f05..5954705 100644
--- a/indianrails/trains/imports.py
+++ b/indianrails/trains/imports.py
@@ -250,7 +250,7 @@ def import_schedule():
 
 def geolocate_stations():
     errors = []
-    for s in Station.objects.filter(point=None)[0:10]:
+    for s in Station.objects.filter(point=None)[0:1000]:
         coords = csv2kml.get_coordinates(s.address)
         if coords is not None:
             pt = Point(coords[0], coords[1])