def uri_to_local_path(local_uri):
"""
Transform a URI to a platform dependent Path.
:type local_uri: str
:rtype: pathlib.Path
For example on Unix:
'file:///tmp/something.txt' -> '/tmp/something.txt'
On Windows:
'file:///C:/tmp/something.txt' -> 'C:\\tmp\\test.tmp'
.. note:
Only supports file:// schema URIs
"""
if not local_uri:
return None
components = compat.urlparse(local_uri)
if components.scheme != 'file':
raise ValueError('Only file URIs currently supported. Tried %r.' %
components.scheme)
path = compat.url2pathname(components.path)
return pathlib.Path(path)
def _url2rasterio(url_str, fmt, layer):
"""
turn URL into a string that could be passed to raterio.open
"""
url = urlparse(url_str)
assert url.scheme, "Expecting URL with scheme here"
# if format is NETCDF of HDF need to pass NETCDF:path:band as filename to rasterio/GDAL
for nasty_format in ('netcdf', 'hdf'):
if nasty_format in fmt.lower():
if url.scheme != 'file':
raise RuntimeError("Can't access %s over %s" % (fmt, url.scheme))
filename = '%s:%s:%s' % (fmt, uri_to_local_path(url_str), layer)
return filename
if url.scheme and url.scheme != 'file':
return url_str
# if local path strip scheme and other gunk
return str(uri_to_local_path(url_str))
def uri_scheme(self):
url = urlparse(self.uris[0])
if url.scheme == '':
return 'file'
return url.scheme
