def _commit_for_blob(ref, fn):
upstream = Commit.find_all(repo, ref, fn)
for commit in upstream:
try:
blob = _traverse(commit.tree, fn).next()
except KeyError:
return
if blob.id == initialblob.id:
return commit
def file():
"""For a given file, compare its history against UPSTREAM."""
repo = Repo()
fn = argv[1]
upstream = argv[2]
try:
local = argv[3]
except IndexError:
local = "HEAD"
lstart = Commit.find_all(repo, local, fn)[-1]
initialblob = _traverse(lstart.tree, fn).next()
def _commit_for_blob(ref, fn):
upstream = Commit.find_all(repo, ref, fn)
for commit in upstream:
try:
blob = _traverse(commit.tree, fn).next()
except KeyError:
return
if blob.id == initialblob.id:
return commit
ustart = _commit_for_blob(upstream, fn)
if ustart:
upstream_precommits = set(c.id for c in Commit.find_all(repo, ustart, fn))
else:
print >>stderr, "Warning: upstream does not have the initial blob for %s." % fn
upstream, local = (_commit(repo, upstream), _commit(repo, local))
commits = reversed(left_right(repo, upstream, local, fn))
for commit in commits:
if ustart:
if commit.direction != "-" and \
commit.id in upstream_precommits:
commit.direction = "-"
print("%s %s" % (commit.direction, commit))