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#! /usr/bin/python2
# vim: fileencoding=utf-8 encoding=utf-8 et sw=4
# Copyright (C) 2009 Andrzej Zaborowski <balrogg@gmail.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""
Generate a .diff.xml file (the response from the server after a diff upload)
from an uploaded changeset file (downloadable through
https://www.openstreetmap.org/api/0.6/changeset/<id>/download) -- this is
useful if the network connection broke after uploading the changeset but
before receiving the server response.
"""
__version__ = "$Revision: 21 $"
import os
import sys
import traceback
import codecs
import locale
import subprocess
import httplib
import xml.etree.cElementTree as ElementTree
import locale, codecs
locale.setlocale(locale.LC_ALL, "en_US.UTF-8")
encoding = locale.getlocale()[1]
sys.stdout = codecs.getwriter(encoding)(sys.stdout, errors = "replace")
sys.stderr = codecs.getwriter(encoding)(sys.stderr, errors = "replace")
try:
this_dir = os.path.dirname(__file__)
version = subprocess.Popen(["svnversion", this_dir], stdout = subprocess.PIPE).communicate()[0].strip()
if len(sys.argv) != 3:
print >>sys.stderr, u"Synopsis:"
print >>sys.stderr, u" %s <old-file-name.osc> <new-file-name.osc>"
sys.exit(1)
oldtree = ElementTree.parse(sys.argv[1])
oldroot = oldtree.getroot()
if oldroot.tag != "osmChange" or (oldroot.attrib.get("version") != "0.3" and
oldroot.attrib.get("version") != "0.6"):
print >>sys.stderr, u"File %s is not a v0.3 osmChange file!" % (sys.argv[1],)
sys.exit(1)
old_ids = []
for operation in oldroot:
if operation.tag == "create":
for element in operation:
old_ids.append(int(element.attrib.get("id")))
filename = sys.argv[2]
if not os.path.exists(filename):
print >>sys.stderr, u"File %r doesn't exist!" % (filename,)
sys.exit(1)
if filename.endswith(".osc"):
filename_base = filename[:-4]
else:
filename_base = filename
tree = ElementTree.parse(filename)
root = tree.getroot()
if root.tag != "osmChange" or (root.attrib.get("version") != "0.3" and
root.attrib.get("version") != "0.6"):
print >>sys.stderr, u"File %s is not a v0.3 osmChange file!" % (filename,)
sys.exit(1)
diff_attr = {"version": "0.6", "generator": root.attrib.get("generator")}
diff_root = ElementTree.Element("diffResult", diff_attr)
diff_tree = ElementTree.ElementTree(diff_root)
# Note this is broken, it assumes the nodes in the resulting osmChange
# are in the same order they were in the osmChange sent to the server
# and that the negative IDs there started at -1 and were increasing by
# -1 with each new element.
# A better idea (but still wrong) would be to parse the input osmChange
# xml at the same time and assume that the elements in input and output
# come in the same order, possibly with additional checks (lat/lon..)
old_id = 0
for operation in root:
for element in operation:
attr = {}
# TODO: at least make sure the element type matches!!
if operation.tag == "create":
attr["old_id"] = str(old_ids[old_id])
attr["new_id"] = element.attrib.get("id")
attr["new_version"] = element.attrib.get("version")
old_id += 1
elif operation.tag == "modify":
attr["old_id"] = element.attrib.get("id")
attr["new_id"] = element.attrib.get("id")
attr["new_version"] = element.attrib.get("version")
elif operation.tag == "delete":
attr["old_id"] = element.attrib.get("id")
else:
print "unknown operation", operation.tag
sys.exit(-1)
diff = ElementTree.SubElement(diff_root, element.tag, attr)
diff_tree.write(filename_base + ".diff.xml", "utf-8")
except Exception,err:
print >>sys.stderr, repr(err)
traceback.print_exc(file=sys.stderr)
sys.exit(1)
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