__init__.py
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33 
34 import subprocess
35 import rospkg
36 try:
37  from urllib.request import urlopen
38  from urllib.error import URLError
39 except ImportError:
40  from urllib2 import urlopen
41  from urllib2 import URLError
42 
43 PACKAGE_PREFIX = 'package://'
44 _rospack = None
45 
46 
48  global _rospack
49  if _rospack is None:
50  _rospack = rospkg.RosPack()
51  return _rospack
52 
53 
54 def get_filename(url, use_protocol=True):
55  mod_url = url
56  if url.find(PACKAGE_PREFIX) == 0:
57  mod_url = url[len(PACKAGE_PREFIX):]
58  pos = mod_url.find('/')
59  if pos == -1:
60  raise Exception("Could not parse package:// format into file:// format for " + url)
61 
62  package = mod_url[0:pos]
63  mod_url = mod_url[pos:]
64  package_path = get_rospack().get_path(package)
65 
66  if use_protocol:
67  protocol = "file://"
68  else:
69  protocol = ""
70  mod_url = protocol + package_path + mod_url;
71  return mod_url
72 
73 def get(url):
74  filename = get_filename(url)
75  try:
76  return urlopen(filename).read()
77  except URLError:
78  raise Exception("Invalid URL: {}".format(filename))
resource_retriever.get_filename
def get_filename(url, use_protocol=True)
Definition: __init__.py:54
resource_retriever.get_rospack
def get_rospack()
Definition: __init__.py:47
resource_retriever.get
def get(url)
Definition: __init__.py:73
resource_retriever::Exception
Definition: retriever.h:41


resource_retriever
Author(s): Josh Faust , Ioan Sucan
autogenerated on Wed Dec 20 2023 03:35:35