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Move recursive reverse dependency calculation into get_reverse_tree()

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Signed-off-by: Adam D. Barratt <adam@adam-barratt.org.uk>
This commit is contained in:
Adam D. Barratt 2011-05-09 19:15:05 +00:00
parent 5498c6c4a1
commit d74efb8655
1 changed files with 25 additions and 17 deletions
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42
britney.py
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@ -2046,23 +2046,8 @@ class Britney:
# save the old binary for undo
undo['binaries'][p] = binaries[parch][0][binary]
# all the reverse dependencies are affected by the change
# recursively loop through the reverse dependencies
rev_deps = set(binaries[parch][0][binary][RDEPENDS])
seen = set()
while len(rev_deps) > 0:
# mark all of the current iteration of packages as affected
affected.extend( [ (x, parch) for x in rev_deps ] )
# and as processed
seen |= rev_deps
# generate the next iteration, which is the reverse-dependencies of
# the current iteration
new_rev_deps = [ binaries[parch][0][x][RDEPENDS] for x in rev_deps \
if x in binaries[parch][0] ]
# flatten the list-of-lists, filtering out already handled packages
# in the process
rev_deps = set([ package for sublist in new_rev_deps \
for package in sublist if package not in seen ])
# remove duplicates from the list of affected packages
affected.extend( [ (x, parch) for x in \
self.get_reverse_tree(binary, parch, 'testing') ] )
affected = list(set(affected))
# remove the provided virtual packages
for j in binaries[parch][0][binary][PROVIDES]:
@ -2148,6 +2133,29 @@ class Britney:
# return the package name, the suite, the list of affected packages and the undo dictionary
return (pkg_name, suite, affected, undo)
def get_reverse_tree(self, pkg, arch, suite):
packages = []
binaries = self.binaries[suite][arch][0]
rev_deps = set(binaries[pkg][RDEPENDS])
seen = set()
while len(rev_deps) > 0:
# mark all of the current iteration of packages as affected
packages.extend( [ x for x in rev_deps ] )
# and as processed
seen |= rev_deps
# generate the next iteration, which is the reverse-dependencies of
# the current iteration
new_rev_deps = [ binaries[x][RDEPENDS] for x in rev_deps \
if x in binaries ]
# flatten the list-of-lists, filtering out already handled packages
# in the process
rev_deps = set([ package for sublist in new_rev_deps \
for package in sublist if package not in seen ])
# remove duplicates from the list of affected packages
packages = list(set(packages))
return packages
def get_full_tree(self, pkg, arch, suite):
"""Calculate the full dependency tree for the given package