Mercurial > public > mercurial-scm > hg
comparison mercurial/changegroup.py @ 26392:127b59787fd5
changegroup: use a different compression key for BZ in HG10
For "space saving", bundle1 "strip" the first two bytes of the BZ stream since
they always are 'BZ'. So the current code boostrap the uncompressor with 'BZ'.
This hack is impractical in more generic case so we move it in a dedicated
"decompression".
| author | Pierre-Yves David <pierre-yves.david@fb.com> |
|---|---|
| date | Wed, 23 Sep 2015 11:33:30 -0700 |
| parents | 59c410db8c68 |
| children | 60825fbe2be1 |
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| 26391:f206543d8380 | 26392:127b59787fd5 |
|---|---|
| 161 if alg == 'UN': | 161 if alg == 'UN': |
| 162 alg = None # get more modern without breaking too much | 162 alg = None # get more modern without breaking too much |
| 163 if not alg in util.decompressors: | 163 if not alg in util.decompressors: |
| 164 raise util.Abort(_('unknown stream compression type: %s') | 164 raise util.Abort(_('unknown stream compression type: %s') |
| 165 % alg) | 165 % alg) |
| 166 if alg == 'BZ': | |
| 167 alg = '_truncatedBZ' | |
| 166 self._stream = util.decompressors[alg](fh) | 168 self._stream = util.decompressors[alg](fh) |
| 167 self._type = alg | 169 self._type = alg |
| 168 self.callback = None | 170 self.callback = None |
| 169 def compressed(self): | 171 def compressed(self): |
| 170 return self._type is not None | 172 return self._type is not None |