Upgrade origin-src to google transit feed 1.2.6
[bus.git] / origin-src / transitfeed-1.2.6 / kmlparser.py
blob:a/origin-src/transitfeed-1.2.6/kmlparser.py -> blob:b/origin-src/transitfeed-1.2.6/kmlparser.py
--- a/origin-src/transitfeed-1.2.6/kmlparser.py
+++ b/origin-src/transitfeed-1.2.6/kmlparser.py
@@ -1,1 +1,147 @@
+#!/usr/bin/python2.5
 
+# Copyright (C) 2007 Google Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""
+This package provides implementation of a converter from a kml
+file format into Google transit feed format.
+
+The KmlParser class is the main class implementing the parser.
+
+Currently only information about stops is extracted from a kml file.
+The extractor expects the stops to be represented as placemarks with
+a single point.
+"""
+
+import re
+import string
+import sys
+import transitfeed
+from transitfeed import util
+import xml.dom.minidom as minidom
+import zipfile
+
+
+class Placemark(object):
+  def __init__(self):
+    self.name = ""
+    self.coordinates = []
+
+  def IsPoint(self):
+    return len(self.coordinates) == 1
+
+  def IsLine(self):
+    return len(self.coordinates) > 1
+
+class KmlParser(object):
+  def __init__(self, stopNameRe = '(.*)'):
+    """
+    Args:
+      stopNameRe - a regular expression to extract a stop name from a
+                   placemaker name
+    """
+    self.stopNameRe = re.compile(stopNameRe)
+
+  def Parse(self, filename, feed):
+    """
+    Reads the kml file, parses it and updated the Google transit feed
+    object with the extracted information.
+
+    Args:
+      filename - kml file name
+      feed - an instance of Schedule class to be updated
+    """
+    dom = minidom.parse(filename)
+    self.ParseDom(dom, feed)
+
+  def ParseDom(self, dom, feed):
+    """
+    Parses the given kml dom tree and updates the Google transit feed object.
+
+    Args:
+      dom - kml dom tree
+      feed - an instance of Schedule class to be updated
+    """
+    shape_num = 0
+    for node in dom.getElementsByTagName('Placemark'):
+      p = self.ParsePlacemark(node)
+      if p.IsPoint():
+        (lon, lat) = p.coordinates[0]
+        m = self.stopNameRe.search(p.name)
+        feed.AddStop(lat, lon, m.group(1))
+      elif p.IsLine():
+        shape_num = shape_num + 1
+        shape = transitfeed.Shape("kml_shape_" + str(shape_num))
+        for (lon, lat) in p.coordinates:
+          shape.AddPoint(lat, lon)
+        feed.AddShapeObject(shape)
+
+  def ParsePlacemark(self, node):
+    ret = Placemark()
+    for child in node.childNodes:
+      if child.nodeName == 'name':
+        ret.name = self.ExtractText(child)
+      if child.nodeName == 'Point' or child.nodeName == 'LineString':
+        ret.coordinates = self.ExtractCoordinates(child)
+    return ret
+
+  def ExtractText(self, node):
+    for child in node.childNodes:
+      if child.nodeType == child.TEXT_NODE:
+        return child.wholeText  # is a unicode string
+    return ""
+
+  def ExtractCoordinates(self, node):
+    coordinatesText = ""
+    for child in node.childNodes:
+      if child.nodeName == 'coordinates':
+        coordinatesText = self.ExtractText(child)
+        break
+    ret = []
+    for point in coordinatesText.split():
+      coords = point.split(',')
+      ret.append((float(coords[0]), float(coords[1])))
+    return ret
+
+
+def main():
+  usage = \
+"""%prog <input.kml> <output GTFS.zip>
+
+Reads KML file <input.kml> and creates GTFS file <output GTFS.zip> with
+placemarks in the KML represented as stops.
+"""
+
+  parser = util.OptionParserLongError(
+      usage=usage, version='%prog '+transitfeed.__version__)
+  (options, args) = parser.parse_args()
+  if len(args) != 2:
+    parser.error('You did not provide all required command line arguments.')
+
+  if args[0] == 'IWantMyCrash':
+    raise Exception('For testCrashHandler')
+
+  parser = KmlParser()
+  feed = transitfeed.Schedule()
+  feed.save_all_stops = True
+  parser.Parse(args[0], feed)
+  feed.WriteGoogleTransitFeed(args[1])
+
+  print "Done."
+
+
+if __name__ == '__main__':
+  util.RunWithCrashHandler(main)
+