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# Author Paul Mathieu/paul@osrfoundation.org

import rosdistro

class RDCache:
    index = None
    release_files = {}

def get_index():
    if RDCache.index is None:
        RDCache.index = rosdistro.get_index(rosdistro.get_index_url())
    return RDCache.index

def get_release_file(distro):
    if distro not in RDCache.release_files:
        RDCache.release_files[distro] = rosdistro.get_release_file(get_index(), distro)
    return RDCache.release_files[distro]

def get_targets():
    return dict((d, get_release_file(d).platforms) for d in get_index().distributions)

@@ -1663,16 +1663,37 @@
 DCache:%0A
+    index_url = None%0A
     inde
@@ -1729,25 +1729,28 @@
 %7B%7D%0A%0Adef 
-get_index
+_check_cache
 ():%0A    
@@ -1769,16 +1769,41 @@
 ndex
- is None
+_url != rosdistro.get_index_url()
 :%0A  
@@ -1821,16 +1821,20 @@
 he.index
+_url
  = rosdi
@@ -1847,17 +1847,179 @@
 et_index
-(
+_url()%0A        RDCache.index = None%0A        RDCache.release_files = %7B%7D%0A%0A%0Adef get_index():%0A    _check_cache()%0A    if RDCache.index is None:%0A        RDCache.index = 
 rosdistr
@@ -2029,22 +2029,34 @@
 et_index
+(RDCache.index
 _url
-()
 )%0A    re
@@ -2105,16 +2105,35 @@
 istro):%0A
+    _check_cache()%0A
     if d

Fix bug in rosdistro helper