/usr/lib/python2.7/dist-packages/resource_retriever/__init__.py is in python-resource-retriever 1.11.6-2.
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#
# Copyright (c) 2008, Willow Garage, Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following
# disclaimer in the documentation and/or other materials provided
# with the distribution.
# * Neither the name of the Willow Garage nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
import roslib; roslib.load_manifest('resource_retriever')
import subprocess
import urlgrabber, string
PACKAGE_PREFIX = 'package://'
def rospack_find(package):
process = subprocess.Popen(['rospack', 'find', package], shell=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
(stdout, stderr) = process.communicate()
if len(stderr) > 0:
raise Exception(stderr)
else:
return string.strip(stdout)
def get_filename(url, use_protocol=True ):
mod_url = url
if url.find(PACKAGE_PREFIX) == 0:
mod_url = url[len(PACKAGE_PREFIX):]
pos = mod_url.find('/')
if pos == -1:
raise Exception("Could not parse package:// format into file:// format for "+url)
package = mod_url[0:pos]
mod_url = mod_url[pos:]
package_path = rospack_find(package)
if use_protocol:
protocol = "file://"
else:
protocol = ""
mod_url = protocol + package_path + mod_url;
return mod_url
def get(url):
return urlgrabber.urlopen(get_filename(url))
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