def patch_seq2ropath(patch_seq):
"""Apply the patches in patch_seq, return single ropath"""
first = patch_seq[0]
assert first.difftype != "diff", "First patch in sequence " \
"%s was a diff" % patch_seq
if not first.isreg():
# No need to bother with data if not regular file
assert len(patch_seq) == 1, "Patch sequence isn't regular, but " \
"has %d entries" % len(patch_seq)
return first.get_ropath()
current_file = first.open("rb")
for delta_ropath in patch_seq[1:]:
assert delta_ropath.difftype == "diff", delta_ropath.difftype
if not isinstance(current_file, file):
"""
librsync insists on a real file object, which we create manually
by using the duplicity.tempdir to tell us where.
See https://bugs.launchpad.net/duplicity/+bug/670891 for discussion
of os.tmpfile() vs tempfile.TemporaryFile() w.r.t. Windows / Posix,
which is worked around in librsync.PatchedFile() now.
"""
tempfp = tempfile.TemporaryFile(dir=tempdir.default().dir())
util.copyfileobj(current_file, tempfp)
assert not current_file.close()
tempfp.seek(0)
current_file = tempfp
current_file = librsync.PatchedFile(current_file,
delta_ropath.open("rb"))
result = patch_seq[-1].get_ropath()
result.setfileobj(current_file)
return result
def top_off(bytes, file):
"""
Add bytes of incompressible data to to_gpg_fp
In this case we take the incompressible data from the
beginning of filename (it should contain enough because size
>> largest block size).
"""
incompressible_fp = open(filename, "rb")
assert util.copyfileobj(incompressible_fp, file.gpg_input, bytes) == bytes
incompressible_fp.close()
def top_off(bytes, file):
"""
Add bytes of incompressible data to to_gpg_fp
In this case we take the incompressible data from the
beginning of filename (it should contain enough because size
>> largest block size).
"""
incompressible_fp = open(filename, "rb")
assert util.copyfileobj(incompressible_fp, file.gpg_input, bytes) == bytes
incompressible_fp.close()
