__init__.py
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00001 # Software License Agreement (BSD License)
00002 #
00003 # Copyright (c) 2008, Willow Garage, Inc.
00004 # All rights reserved.
00005 #
00006 # Redistribution and use in source and binary forms, with or without
00007 # modification, are permitted provided that the following conditions
00008 # are met:
00009 #
00010 #  * Redistributions of source code must retain the above copyright
00011 #    notice, this list of conditions and the following disclaimer.
00012 #  * Redistributions in binary form must reproduce the above
00013 #    copyright notice, this list of conditions and the following
00014 #    disclaimer in the documentation and/or other materials provided
00015 #    with the distribution.
00016 #  * Neither the name of the Willow Garage nor the names of its
00017 #    contributors may be used to endorse or promote products derived
00018 #    from this software without specific prior written permission.
00019 #
00020 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
00021 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
00022 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
00023 # FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
00024 # COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
00025 # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
00026 # BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
00027 # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
00028 # CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
00029 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
00030 # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
00031 # POSSIBILITY OF SUCH DAMAGE.
00032 #
00033 
00034 import roslib; roslib.load_manifest('resource_retriever')
00035 import subprocess
00036 import urlgrabber, string
00037 
00038 PACKAGE_PREFIX = 'package://'
00039 
00040 def rospack_find(package):
00041     process = subprocess.Popen(['rospack', 'find', package], shell=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
00042     (stdout, stderr) = process.communicate()
00043     if len(stderr) > 0:
00044         raise Exception(stderr)
00045     else:
00046         return string.strip(stdout)
00047 
00048 def get_filename(url, use_protocol=True ):
00049     mod_url = url
00050     if url.find(PACKAGE_PREFIX) == 0:
00051         mod_url = url[len(PACKAGE_PREFIX):]
00052         pos = mod_url.find('/')
00053         if pos == -1:
00054             raise Exception("Could not parse package:// format into file:// format for "+url)
00055 
00056         package = mod_url[0:pos]
00057         mod_url = mod_url[pos:]
00058         package_path = rospack_find(package)
00059 
00060         if use_protocol:
00061             protocol = "file://"
00062         else:
00063             protocol = ""
00064         mod_url = protocol + package_path + mod_url;
00065     return mod_url
00066 
00067 def get(url):
00068     return urlgrabber.urlopen(get_filename(url))
00069 


resource_retriever
Author(s): Josh Faust
autogenerated on Mon Oct 6 2014 04:13:38