Mercurial > hg > mercurial-crew-with-dirclash

annotate mercurial/bundlerepo.py @ 2089:cb99c711c59f

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make appendfile simpler so it does not break with revlogng on windows. it used to cache open files. this made revlogng break because it wants to rename files when splitting .i into .i/.d, but cannot rename or unlink open files on windows. new code is bit slower, but safe on linux and windows. proper fix for too many open/close of changelog/manifest belongs in different place. can get 10% speed improvement back.
author Vadim Gelfer <vadim.gelfer@gmail.com>
date Wed, 19 Apr 2006 08:33:46 -0700
parents 01ee43dda681
children c6c019fd5db1
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 """
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2 bundlerepo.py - repository class for viewing uncompressed bundles
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3
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4 This provides a read-only repository interface to bundles as if
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5 they were part of the actual repository.
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6
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7 Copyright 2006 Benoit Boissinot <benoit.boissinot@ens-lyon.org>
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8
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9 This software may be used and distributed according to the terms
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10 of the GNU General Public License, incorporated herein by reference.
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11 """
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12
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13 from node import *
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14 from i18n import gettext as _
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15 from demandload import demandload
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16 demandload(globals(), "changegroup util os struct")
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17
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18 import localrepo, changelog, manifest, filelog, revlog
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19
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20 class bundlerevlog(revlog.revlog):
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21 def __init__(self, opener, indexfile, datafile, bundlefile,
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22 linkmapper=None):
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23 # How it works:
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24 # to retrieve a revision, we need to know the offset of
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25 # the revision in the bundlefile (an opened file).
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26 #
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27 # We store this offset in the index (start), to differentiate a
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28 # rev in the bundle and from a rev in the revlog, we check
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29 # len(index[r]). If the tuple is bigger than 7, it is a bundle
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30 # (it is bigger since we store the node to which the delta is)
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31 #
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32 revlog.revlog.__init__(self, opener, indexfile, datafile)
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33 self.bundlefile = bundlefile
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34 self.basemap = {}
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35 def chunkpositer():
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36 for chunk in changegroup.chunkiter(bundlefile):
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37 pos = bundlefile.tell()
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38 yield chunk, pos - len(chunk)
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39 n = self.count()
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40 prev = None
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41 for chunk, start in chunkpositer():
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42 size = len(chunk)
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43 if size < 80:
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44 raise util.Abort("invalid changegroup")
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45 start += 80
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46 size -= 80
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47 node, p1, p2, cs = struct.unpack("20s20s20s20s", chunk[:80])
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48 if node in self.nodemap:
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49 prev = node
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50 continue
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51 for p in (p1, p2):
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52 if not p in self.nodemap:
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53 raise RevlogError(_("unknown parent %s") % short(p1))
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54 if linkmapper is None:
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55 link = n
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56 else:
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57 link = linkmapper(cs)
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58
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59 if not prev:
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60 prev = p1
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61 # start, size, base is not used, link, p1, p2, delta ref
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62 e = (start, size, None, link, p1, p2, node)
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63 self.basemap[n] = prev
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64 self.index.append(e)
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65 self.nodemap[node] = n
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66 prev = node
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67 n += 1
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68
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69 def bundle(self, rev):
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70 """is rev from the bundle"""
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71 if rev < 0:
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72 return False
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73 return rev in self.basemap
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74 def bundlebase(self, rev): return self.basemap[rev]
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75 def chunk(self, rev, df=None):
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76 # Warning: in case of bundle, the diff is against bundlebase,
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77 # not against rev - 1
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78 # XXX: could use some caching
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79 if not self.bundle(rev):
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80 return revlog.revlog.chunk(self, rev)
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81 self.bundlefile.seek(self.start(rev))
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82 return self.bundlefile.read(self.length(rev))
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83
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84 def revdiff(self, rev1, rev2):
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85 """return or calculate a delta between two revisions"""
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86 if self.bundle(rev1) and self.bundle(rev2):
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87 # hot path for bundle
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88 revb = self.rev(self.bundlebase(rev2))
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89 if revb == rev1:
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90 return self.chunk(rev2)
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91 elif not self.bundle(rev1) and not self.bundle(rev2):
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92 return revlog.revlog.chunk(self, rev1, rev2)
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93
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94 return self.diff(self.revision(self.node(rev1)),
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95 self.revision(self.node(rev2)))
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96
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97 def revision(self, node):
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98 """return an uncompressed revision of a given"""
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99 if node == nullid: return ""
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100
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101 text = None
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102 chain = []
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103 iter_node = node
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104 rev = self.rev(iter_node)
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105 # reconstruct the revision if it is from a changegroup
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106 while self.bundle(rev):
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107 if self.cache and self.cache[0] == iter_node:
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108 text = self.cache[2]
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109 break
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110 chain.append(rev)
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111 iter_node = self.bundlebase(rev)
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112 rev = self.rev(iter_node)
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parents:
diff changeset
113 if text is None:
1946
9fee186f7f0d bundlerepo: remove relative import, fix a comment
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1942
diff changeset
114 text = revlog.revlog.revision(self, iter_node)
1942
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
115
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
116 while chain:
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
117 delta = self.chunk(chain.pop())
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
118 text = self.patches(text, [delta])
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
119
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
120 p1, p2 = self.parents(node)
1946
9fee186f7f0d bundlerepo: remove relative import, fix a comment
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1942
diff changeset
121 if node != revlog.hash(text, p1, p2):
1942
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
122 raise RevlogError(_("integrity check failed on %s:%d")
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
123 % (self.datafile, self.rev(node)))
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
124
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
125 self.cache = (node, rev, text)
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
126 return text
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
127
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
128 def addrevision(self, text, transaction, link, p1=None, p2=None, d=None):
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
129 raise NotImplementedError
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
130 def addgroup(self, revs, linkmapper, transaction, unique=0):
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
131 raise NotImplementedError
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
132 def strip(self, rev, minlink):
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
133 raise NotImplementedError
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
134 def checksize(self):
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
135 raise NotImplementedError
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
136
1946
9fee186f7f0d bundlerepo: remove relative import, fix a comment
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1942
diff changeset
137 class bundlechangelog(bundlerevlog, changelog.changelog):
1942
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
138 def __init__(self, opener, bundlefile):
1946
9fee186f7f0d bundlerepo: remove relative import, fix a comment
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1942
diff changeset
139 changelog.changelog.__init__(self, opener)
1942
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
140 bundlerevlog.__init__(self, opener, "00changelog.i", "00changelog.d",
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
141 bundlefile)
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
142
1946
9fee186f7f0d bundlerepo: remove relative import, fix a comment
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1942
diff changeset
143 class bundlemanifest(bundlerevlog, manifest.manifest):
1942
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
144 def __init__(self, opener, bundlefile, linkmapper):
1946
9fee186f7f0d bundlerepo: remove relative import, fix a comment
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1942
diff changeset
145 manifest.manifest.__init__(self, opener)
1942
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
146 bundlerevlog.__init__(self, opener, self.indexfile, self.datafile,
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
147 bundlefile, linkmapper)
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
148
1946
9fee186f7f0d bundlerepo: remove relative import, fix a comment
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1942
diff changeset
149 class bundlefilelog(bundlerevlog, filelog.filelog):
1942
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
150 def __init__(self, opener, path, bundlefile, linkmapper):
1946
9fee186f7f0d bundlerepo: remove relative import, fix a comment
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1942
diff changeset
151 filelog.filelog.__init__(self, opener, path)
1942
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
152 bundlerevlog.__init__(self, opener, self.indexfile, self.datafile,
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
153 bundlefile, linkmapper)
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
154
1946
9fee186f7f0d bundlerepo: remove relative import, fix a comment
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1942
diff changeset
155 class bundlerepository(localrepo.localrepository):
1942
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
156 def __init__(self, ui, path, bundlename):
1946
9fee186f7f0d bundlerepo: remove relative import, fix a comment
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1942
diff changeset
157 localrepo.localrepository.__init__(self, ui, path)
1942
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
158 f = open(bundlename, "rb")
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
159 s = os.fstat(f.fileno())
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
160 self.bundlefile = f
1980
dfb796786337 use HG10UN header for uncompressed bundle
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1971
diff changeset
161 header = self.bundlefile.read(6)
dfb796786337 use HG10UN header for uncompressed bundle
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1971
diff changeset
162 if not header.startswith("HG"):
dfb796786337 use HG10UN header for uncompressed bundle
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1971
diff changeset
163 raise util.Abort(_("%s: not a Mercurial bundle file") % bundlename)
dfb796786337 use HG10UN header for uncompressed bundle
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1971
diff changeset
164 elif not header.startswith("HG10"):
dfb796786337 use HG10UN header for uncompressed bundle
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1971
diff changeset
165 raise util.Abort(_("%s: unknown bundle version") % bundlename)
dfb796786337 use HG10UN header for uncompressed bundle
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1971
diff changeset
166 elif header == "HG10BZ":
1942
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
167 raise util.Abort(_("%s: compressed bundle not supported")
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
168 % bundlename)
1980
dfb796786337 use HG10UN header for uncompressed bundle
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1971
diff changeset
169 elif header == "HG10UN":
dfb796786337 use HG10UN header for uncompressed bundle
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1971
diff changeset
170 # uncompressed bundle supported
dfb796786337 use HG10UN header for uncompressed bundle
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1971
diff changeset
171 pass
dfb796786337 use HG10UN header for uncompressed bundle
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1971
diff changeset
172 else:
dfb796786337 use HG10UN header for uncompressed bundle
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1971
diff changeset
173 raise util.Abort(_("%s: unknown bundle compression type")
dfb796786337 use HG10UN header for uncompressed bundle
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1971
diff changeset
174 % bundlename)
1942
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
175 self.changelog = bundlechangelog(self.opener, self.bundlefile)
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
176 self.manifest = bundlemanifest(self.opener, self.bundlefile,
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
177 self.changelog.rev)
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
178 # dict with the mapping 'filename' -> position in the bundle
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
179 self.bundlefilespos = {}
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
180 while 1:
1981
736b6c96bbbc make incoming work via ssh (issue139); move chunk code into separate module.
Thomas Arendsen Hein <thomas@intevation.de>
parents: 1980
diff changeset
181 f = changegroup.getchunk(self.bundlefile)
736b6c96bbbc make incoming work via ssh (issue139); move chunk code into separate module.
Thomas Arendsen Hein <thomas@intevation.de>
parents: 1980
diff changeset
182 if not f:
736b6c96bbbc make incoming work via ssh (issue139); move chunk code into separate module.
Thomas Arendsen Hein <thomas@intevation.de>
parents: 1980
diff changeset
183 break
736b6c96bbbc make incoming work via ssh (issue139); move chunk code into separate module.
Thomas Arendsen Hein <thomas@intevation.de>
parents: 1980
diff changeset
184 self.bundlefilespos[f] = self.bundlefile.tell()
736b6c96bbbc make incoming work via ssh (issue139); move chunk code into separate module.
Thomas Arendsen Hein <thomas@intevation.de>
parents: 1980
diff changeset
185 for c in changegroup.chunkiter(self.bundlefile):
736b6c96bbbc make incoming work via ssh (issue139); move chunk code into separate module.
Thomas Arendsen Hein <thomas@intevation.de>
parents: 1980
diff changeset
186 pass
1942
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
187
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
188 def dev(self):
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
189 return -1
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
190
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
191 def file(self, f):
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
192 if f[0] == '/':
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
193 f = f[1:]
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
194 if f in self.bundlefilespos:
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
195 self.bundlefile.seek(self.bundlefilespos[f])
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
196 return bundlefilelog(self.opener, f, self.bundlefile,
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
197 self.changelog.rev)
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
198 else:
1946
9fee186f7f0d bundlerepo: remove relative import, fix a comment
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1942
diff changeset
199 return filelog.filelog(self.opener, f)
1942
9da45de3118d add bundlerepo.py: a read-only repo that can use uncompressed bundles
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
diff changeset
200
1971
915b81a35e46 imported patch /home/thomas/fix-incoming-abortion4.patch
Thomas Arendsen Hein <thomas@intevation.de>
parents: 1946
diff changeset
201 def close(self):
915b81a35e46 imported patch /home/thomas/fix-incoming-abortion4.patch
Thomas Arendsen Hein <thomas@intevation.de>
parents: 1946
diff changeset
202 """Close assigned bundle file immediately."""
915b81a35e46 imported patch /home/thomas/fix-incoming-abortion4.patch
Thomas Arendsen Hein <thomas@intevation.de>
parents: 1946
diff changeset
203 self.bundlefile.close()