def __init__(self, fina="dat"):

self.mainData = compressedfile.CompressedFile(fina+"/data", readOnly = True)

self.ns = hashtable.HashTableFile(compressedfile.CompressedFile(fina+"/datanodestart.hash", readOnly = True), readOnly = True)

self.ne = hashtable.HashTableFile(compressedfile.CompressedFile(fina+"/datanodeend.hash", readOnly = True), readOnly = True)

self.ws = hashtable.HashTableFile(compressedfile.CompressedFile(fina+"/datawaystart.hash", readOnly = True), readOnly = True)

self.we = hashtable.HashTableFile(compressedfile.CompressedFile(fina+"/datawayend.hash", readOnly = True), readOnly = True)

self.rs = hashtable.HashTableFile(compressedfile.CompressedFile(fina+"/datarelationstart.hash", readOnly = True), readOnly = True)

self.re = hashtable.HashTableFile(compressedfile.CompressedFile(fina+"/datarelationend.hash", readOnly = True), readOnly = True)

def Get(self, objType, objId, objVer):

startPos = None

endPos = None

if objType in ["n", "node"]:

startPos = self.ns[objId][objVer]

endPos = self.ne[objId][objVer]

if objType in ["w", "way"]:

startPos = self.ws[objId][objVer]

endPos = self.we[objId][objVer]

if objType in ["r", "relation"]:

startPos = self.rs[objId][objVer]

endPos = self.re[objId][objVer]

if startPos is None or endPos is None:

return None

self.mainData.seek(startPos)

rawStr = self.mainData.read(endPos - startPos)

zoomLevel = 11

#Determine which data tiles to check for query

tl = slippy.deg2numf(queryArea[3], queryArea[0], zoomLevel)

br = slippy.deg2numf(queryArea[1], queryArea[2], zoomLevel)

xr = range(int(math.floor(tl[0])), int(math.ceil(br[0])))

yr = range(int(math.floor(tl[1])), int(math.ceil(br[1])))

print "Getting nodes from tile ranges", xr, yr

nodeEntry = struct.Struct(">QI")

#Get candidate nodes from spatial index

candidateNodes = {}

tileHits = 0

tileCount = 0

for tilex in xr:

for tiley in yr:

tileFina = "/{0}/{1}/{2}.dat".format(zoomLevel, tilex, tiley)

tileCount += 1

if not spatialIndex.exists(tileFina):

continue

tileHits += 1

print "Query tile", tilex, tiley

fi = spatialIndex.open(tileFina)

numNodeEntries = len(fi) / nodeEntry.size

for nodeNum in range(numNodeEntries):

fi.seek(nodeNum * nodeEntry.size)

nodeId, nodeVer = nodeEntry.unpack(fi.read(nodeEntry.size))

if nodeId not in candidateNodes:

candidateNodes[nodeId] = nodeVer

else:

#Retain latest version

if nodeVer > candidateNodes[nodeId]:

candidateNodes[nodeId] = nodeVer

if not tolerateMissing and tileHits != tileCount:

raise RuntimeError("Missing tiles detected")

print "Candidate nodes", len(candidateNodes)

print "Checking for latest versions"

#Check these are the latest known version of the node

currentNodes = {}

countMissingNodes = 0

for nodeId in candidateNodes:

try:

latestVer = versionStore.GetVersion("node", nodeId)

foundVer = candidateNodes[nodeId]

#print nodeId, latestVer, foundVer

if latestVer == foundVer:

currentNodes[nodeId] = foundVer

except:

#print "Missing node", nodeId

countMissingNodes += 1

print "Missing nodes:", countMissingNodes

print "Num candidate nodes", len(currentNodes)

#Filter to find those in bounding box

print "Filtering nodes based on area"

nodeInfo = {}

for nodeId in currentNodes:

objStr = osmObjectStore.Get("node", nodeId, currentNodes[nodeId])

#print nodeId, "'"+objStr+"'"

#print len(objStr)

try:

nodeXmlTree = ET.fromstring(objStr.encode("utf-8"))

except ET.ParseError as err:

print "Error getting", nodeId

print err

print objStr

raise err

lat = float(nodeXmlTree.attrib['lat'])

lon = float(nodeXmlTree.attrib['lon'])

if lat < queryArea[1] or lat > queryArea[3]:

continue

if lon < queryArea[0] or lon > queryArea[2]:

continue

nodeInfo[nodeId] = objStr

#print spatialIndex.listdir("/11/1022")

print "Num nodes in area", len(nodeInfo)

zoomLevel = queryArea[0]

#Determine which data tiles to check for query

xr = range(queryArea[1], queryArea[1]+1)

yr = range(queryArea[2], queryArea[2]+1)

print "Getting nodes from tile ranges", xr, yr

nodeEntry = struct.Struct(">QI")

#Get candidate nodes from spatial index

candidateNodes = {}

tileHits = 0

tileCount = 0

for tilex in xr:

for tiley in yr:

tileFina = "/{0}/{1}/{2}.dat".format(zoomLevel, tilex, tiley)

tileCount += 1

if not spatialIndex.exists(tileFina):

continue

tileHits += 1

print tilex, tiley

fi = spatialIndex.open(tileFina)

numNodeEntries = len(fi) / nodeEntry.size

for nodeNum in range(numNodeEntries):

fi.seek(nodeNum * nodeEntry.size)

nodeId, nodeVer = nodeEntry.unpack(fi.read(nodeEntry.size))

if nodeId not in candidateNodes:

candidateNodes[nodeId] = nodeVer

else:

#Retain latest version

if nodeVer > candidateNodes[nodeId]:

candidateNodes[nodeId] = nodeVer

if not tolerateMissing and tileHits != tileCount:

raise RuntimeError("Missing tiles detected")

print "Checking for latest versions"

#Check these are the latest known version of the node

currentNodes = {}

for nodeId in candidateNodes:

try:

latestVer = versionStore.GetVersion("node", nodeId)

foundVer = candidateNodes[nodeId]

#print nodeId, latestVer, foundVer

if latestVer == foundVer:

currentNodes[nodeId] = foundVer

except:

print "Missing node", nodeId

print "Num candidate nodes", len(currentNodes)

#Filter to find those in bounding box

print "Get node data"

nodeInfo = {}

for nodeId in currentNodes:

objStr = osmObjectStore.Get("node", nodeId, currentNodes[nodeId])

nodeInfo[nodeId] = objStr

#print spatialIndex.listdir("/11/1022")

print "Num nodes in area", len(nodeInfo)

def __init__(self, path="dat"):

self.nodeVersions = hashtable.HashTableFile(compressedfile.CompressedFile(path+"/ver.vnode", readOnly = True), readOnly = True)

self.wayVersions = hashtable.HashTableFile(compressedfile.CompressedFile(path+"/ver.vway", readOnly = True), readOnly = True)

self.relationVersions = hashtable.HashTableFile(compressedfile.CompressedFile(path+"/ver.vrelation", readOnly = True), readOnly = True)

def GetVersion(self, objType, objId):

if objType in ["n", "node"]:

return self.nodeVersions[objId]

if objType in ["w", "way"]:

return self.wayVersions[objId]

if objType in ["r", "relation"]:

return self.relationVersions[objId]

def __init__(self, path="dat"):

self.nodeParents = hashtable.HashTableFile(compressedfile.CompressedFile(path+"/ch.node", readOnly = True), readOnly = True)

self.wayParents = hashtable.HashTableFile(compressedfile.CompressedFile(path+"/ch.way", readOnly = True), readOnly = True)

self.relationParents = hashtable.HashTableFile(compressedfile.CompressedFile(path+"/ch.relation", readOnly = True), readOnly = True)

def GetParents(self, objType, objId):

typeStore = None

if objType in ["n", "node"]:

typeStore = self.nodeParents

if objType in ["w", "way"]:

typeStore = self.wayParents

if objType in ["r", "relation"]:

typeStore = self.relationParents

if typeStore is None:

raise RuntimeError("Unknown object type:"+str(objType))

if objId in typeStore:

out = {}

parents = typeStore[objId]

#print parents

for objVer in parents:

for t, oid in parents[objVer]:

#print t, oid

if t not in out:

out[t] = {}

outOfType = out[t]

if oid not in outOfType:

outOfType[oid] = set()

outOfObj = outOfType[oid]

outOfObj.add(objVer)

return out

else:

#print nodeId, "is an orphan"

def __init__(self, versionStore, parentsStore):

self.versionStore = versionStore

self.parentsStore = parentsStore

def GetCurrentParents(self, objType, objId):

out = []

allParents = self.parentsStore.GetParents(objType, objId)

for t in allParents:

objOfType = allParents[t]

for oid in objOfType:

foundVers = objOfType[oid]

maxVer = max(foundVers)

currentVer = self.versionStore.GetVersion(t, oid)

if maxVer == currentVer:

out.append((t, oid, currentVer))

for objType in objsOfInterest:

objOfType = objsOfInterest[objType]

for objId in objOfType:

if objOfType[objId] is not None:

continue

try:

currentVer = versionStore.GetVersion(objType, objId)

objXml = osmObjectStore.Get(objType, objId, currentVer)

objOfType[objId] = objXml

except IndexError as err:

def __init__(self, path="dat"):

self.spatialIndex = qsfs.Qsfs(compressedfile.CompressedFile(path+"/sp", readOnly = True))

self.osmObjectStore = OsmObjectStore(path)

self.versionStore = VersionStore(path)

self.parentsStore = ParentsStore(path)

self.currentParentStore = CurrentParentStore(self.versionStore, self.parentsStore)

def __del__(self):

del self.currentParentStore

print "Close spatial index"

del self.spatialIndex

print "Close object storage"

del self.osmObjectStore

print "Close version index"

del self.versionStore

print "Close parent index"

del self.parentsStore

print "All done"

def GetArea(self, queryArea, out, tolerateMissing = True):

nodesOfInterest = GetNodesInCustomArea(self.spatialIndex, queryArea, self.osmObjectStore, self.versionStore, tolerateMissing)

self.NodesToCompleteData(nodesOfInterest, queryArea, out)

def GetTile(self, tilex, tiley, zoom, out, tolerateMissing = True):

tileNum = (zoom, tilex, tiley)

nw = slippy.num2deg(tilex, tiley, zoom)

se = slippy.num2deg(tilex+1, tiley+1, zoom)

queryArea = [nw[1], nw[0], se[1], se[0]]

nodesOfInterest = GetNodesInSlippyTile(self.spatialIndex, tileNum, self.osmObjectStore, self.versionStore, tolerateMissing)

self.NodesToCompleteData(nodesOfInterest, queryArea, out)

def NodesToCompleteData(self, nodesOfInterest, queryArea, out):

#Get parents of objects

print "Get parents of objects"

newObjsOfInterest = {'n':{}}

veryNewObjsOfInterest = {}

objsOfInterest = {'n':{}}

nnoi = newObjsOfInterest['n']

for nodeId in nodesOfInterest:

nnoi[nodeId] = nodesOfInterest[nodeId]

done = False

while not done:

#Aquire parents of new objects

for objType in newObjsOfInterest:

objOfType = newObjsOfInterest[objType]

for objId in objOfType:

objXml = objOfType[objId]

objCurrentParents = self.currentParentStore.GetCurrentParents(objType, objId)

#print objType, objId, objCurrentParents

for t, i, v in objCurrentParents:

if t not in veryNewObjsOfInterest:

veryNewObjsOfInterest[t] = {}

oot = veryNewObjsOfInterest[t]

oot[i] = None

#Merge new objects into existing objects

for objType in newObjsOfInterest:

if objType not in objsOfInterest:

objsOfInterest[objType] = {}

fromOot = newObjsOfInterest[objType]

toOot = objsOfInterest[objType]

for objId in fromOot:

toOot[objId] = fromOot[objId]

#Reset temporary object stores

newObjsOfInterest = veryNewObjsOfInterest

veryNewObjsOfInterest = {}

#Count pending objects

count = 0

for objType in newObjsOfInterest:

count += len(newObjsOfInterest[objType])

if count == 0:

done = True

for objType in objsOfInterest:

print "count", objType, len(objsOfInterest[objType])

print "Get data for objects"

GetDataForObjs(objsOfInterest, self.versionStore, self.osmObjectStore)

print "Complete ways"

if 'n' not in objsOfInterest:

objsOfInterest['n'] = {}

if 'w' in objsOfInterest:

ways = objsOfInterest['w']

nodes = objsOfInterest['n']

for objId in ways:

#print objId

wayXmlTree = ET.fromstring(ways[objId].encode('utf-8'))

for ch in wayXmlTree:

if ch.tag != "nd": continue

nid = int(ch.attrib['ref'])

if nid not in nodes:

nodes[nid] = None

for objType in objsOfInterest:

print "count", objType, len(objsOfInterest[objType])

print "Get data for objects 2"

GetDataForObjs(objsOfInterest, self.versionStore, self.osmObjectStore)

print "Output result"

out.write("<?xml version='1.0' encoding='UTF-8'?>\n")

out.write("<osm version='0.6' generator='py'>\n")

out.write("<bounds minlat='{1}' minlon='{0}' maxlat='{3}' maxlon='{2}'/>\n".format(*queryArea))

if 'n' in objsOfInterest:

objs = objsOfInterest['n']

for objId in objs:

obj = objs[objId]

if obj is None: continue

out.write(obj.encode("utf-8"))

if 'w' in objsOfInterest:

objs = objsOfInterest['w']

for objId in objs:

obj = objs[objId]

if obj is None: continue

out.write(obj.encode("utf-8"))

if 'r' in objsOfInterest:

objs = objsOfInterest['r']

for objId in objs:

obj = objs[objId]

if obj is None: continue

out.write(obj.encode("utf-8"))

out.write("</osm>\n")

tl = slippy.deg2num(queryArea[3], queryArea[0], 11)

br = slippy.deg2num(queryArea[1], queryArea[2], 11)

for tilex in range(tl[0], br[0]+2):

if not os.path.exists(str(tilex)):

os.mkdir(str(tilex))

for tiley in range(tl[1], br[1]+2):

fina = "{0}/{1}.osm.bz2".format(tilex, tiley)

try:

getArea.GetTile(tilex, tiley, zoom, bz2.BZ2File(fina, "w"), False)

except RuntimeError as err:

print err