Mercurial > hg > mercurial-crew-with-dirclash
annotate mercurial/statichttprepo.py @ 5378:8a2915f57dfc
convert: add a mode where mercurial_sink skips empty revisions.
The getchanges function of some converter_source classes can return
some false positives. I.e. they sometimes claim that a file "foo"
was changed in some revision, even though its contents are still the
same.
convert_svn is particularly bad, but I think this can also happen with
convert_cvs and, at least in theory, with mercurial_source.
For regular conversions this is not really a problem - as long as
getfile returns the right contents, we'll get a converted revision
with the right contents. But when we use --filemap, this could lead
to superfluous revisions being converted.
Instead of fixing every converter_source, I decided to change
mercurial_sink to work around this problem.
When --filemap is used, we're interested only in revisions that touch
some specific files. If a revision doesn't change any of these files,
then we're not interested in it (at least for revisions with a single
parent; merges are special).
For mercurial_sink, we abuse this property and rollback a commit if
the manifest text hasn't changed. This avoids duplicating the logic
from localrepo.filecommit to detect unchanged files.
author | Alexis S. L. Carvalho <alexis@cecm.usp.br> |
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date | Thu, 04 Oct 2007 23:21:37 -0300 |
parents | 639935f2e63a |
children |
rev | line source |
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1101 | 1 # statichttprepo.py - simple http repository class for mercurial |
2 # | |
3 # This provides read-only repo access to repositories exported via static http | |
4 # | |
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5 # Copyright 2005-2007 Matt Mackall <mpm@selenic.com> |
1101 | 6 # |
7 # This software may be used and distributed according to the terms | |
8 # of the GNU General Public License, incorporated herein by reference. | |
9 | |
3893 | 10 from i18n import _ |
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11 import changelog, filelog, httprangereader |
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12 import repo, localrepo, manifest, os, urllib, urllib2, util |
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13 |
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14 class rangereader(httprangereader.httprangereader): |
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15 def read(self, size=None): |
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16 try: |
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17 return httprangereader.httprangereader.read(self, size) |
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18 except urllib2.HTTPError, inst: |
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19 raise IOError(None, inst) |
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20 except urllib2.URLError, inst: |
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21 raise IOError(None, inst.reason[1]) |
1101 | 22 |
23 def opener(base): | |
24 """return a function that opens files over http""" | |
25 p = base | |
26 def o(path, mode="r"): | |
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27 f = "/".join((p, urllib.quote(path))) |
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28 return rangereader(f) |
1101 | 29 return o |
30 | |
31 class statichttprepository(localrepo.localrepository): | |
32 def __init__(self, ui, path): | |
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33 self._url = path |
1101 | 34 self.ui = ui |
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35 |
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36 self.path = path.rstrip('/') + "/.hg" |
1101 | 37 self.opener = opener(self.path) |
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38 # find requirements |
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39 try: |
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40 requirements = self.opener("requires").read().splitlines() |
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41 except IOError: |
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42 requirements = [] |
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43 # check them |
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44 for r in requirements: |
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45 if r not in self.supported: |
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46 raise repo.RepoError(_("requirement '%s' not supported") % r) |
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47 |
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48 # setup store |
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49 if "store" in requirements: |
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50 self.encodefn = util.encodefilename |
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51 self.decodefn = util.decodefilename |
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52 self.spath = self.path + "/store" |
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53 else: |
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54 self.encodefn = lambda x: x |
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55 self.decodefn = lambda x: x |
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56 self.spath = self.path |
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57 self.sopener = util.encodedopener(opener(self.spath), self.encodefn) |
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58 |
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59 self.manifest = manifest.manifest(self.sopener) |
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60 self.changelog = changelog.changelog(self.sopener) |
1101 | 61 self.tagscache = None |
62 self.nodetagscache = None | |
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63 self.encodepats = None |
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64 self.decodepats = None |
1101 | 65 |
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66 def url(self): |
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67 return 'static-' + self._url |
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68 |
1101 | 69 def dev(self): |
70 return -1 | |
71 | |
72 def local(self): | |
73 return False | |
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74 |
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75 def instance(ui, path, create): |
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76 if create: |
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77 raise util.Abort(_('cannot create new static-http repository')) |
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78 return statichttprepository(ui, path[7:]) |