# BSD Licensed, Copyright (c) 2006-2010 TileCache Contributors
from TileCache.Service import Request, Capabilities
import TileCache.Layer as Layer
[docs]class TMS (Request):
[docs] def parse (self, fields, path, host):
# /1.0.0/global_mosaic/0/0/0.jpg
parts = filter( lambda x: x != "", path.split("/") )
if not host[-1] == "/": host = host + "/"
if len(parts) < 1:
return self.serverCapabilities(host)
elif len(parts) < 2:
return self.serviceCapabilities(host, self.service.layers)
else:
layer = self.getLayer(parts[1])
if len(parts) < 3:
return self.layerCapabilities(host, layer)
else:
parts[-1] = parts[-1].split(".")[0]
tile = None
if layer.tms_type == "google" or (fields.has_key('type') and fields['type'] == 'google'):
res = layer.resolutions[int(parts[2])]
maxY = int(
round(
(layer.bbox[3] - layer.bbox[1]) /
(res * layer.size[1])
)
) - 1
tile = Layer.Tile(layer, int(parts[3]), maxY - int(parts[4]), int(parts[2]))
else:
tile = Layer.Tile(layer, int(parts[3]), int(parts[4]), int(parts[2]))
return tile
[docs] def serverCapabilities (self, host):
return Capabilities("text/xml", """<?xml version="1.0" encoding="UTF-8" ?>
<Services>
<TileMapService version="1.0.0" href="%s1.0.0/" />
</Services>""" % host)
[docs] def serviceCapabilities (self, host, layers):
xml = """<?xml version="1.0" encoding="UTF-8" ?>
<TileMapService version="1.0.0">
<TileMaps>"""
for name, layer in layers.items():
profile = "none"
if (layer.srs == "EPSG:4326"): profile = "global-geodetic"
elif (layer.srs == "OSGEO:41001"): profile = "global-mercator"
xml += """
<TileMap
href="%s1.0.0/%s/"
srs="%s"
title="%s"
profile="%s" />
""" % (host, name, layer.srs, layer.name, profile)
xml += """
</TileMaps>
</TileMapService>"""
return Capabilities("text/xml", xml)
[docs] def layerCapabilities (self, host, layer):
tms_type = layer.tms_type or "default"
xml = """<?xml version="1.0" encoding="UTF-8" ?>
<TileMap version="1.0.0" tilemapservice="%s1.0.0/">
<!-- Additional data: tms_type is %s -->
<Title>%s</Title>
<Abstract>%s</Abstract>
<SRS>%s</SRS>
<BoundingBox minx="%.6f" miny="%.6f" maxx="%.6f" maxy="%.6f" />
<Origin x="%.6f" y="%.6f" />
<TileFormat width="%d" height="%d" mime-type="%s" extension="%s" />
<TileSets>
""" % (host, tms_type, layer.name, layer.description, layer.srs, layer.bbox[0], layer.bbox[1],
layer.bbox[2], layer.bbox[3], layer.bbox[0], layer.bbox[1],
layer.size[0], layer.size[1], layer.format(), layer.extension)
for z, res in enumerate(layer.resolutions):
xml += """
<TileSet href="%s1.0.0/%s/%d"
units-per-pixel="%.20f" order="%d" />""" % (
host, layer.name, z, res, z)
xml += """
</TileSets>
</TileMap>"""
return Capabilities("text/xml", xml)