Mercurial > public > mercurial-scm > hg-stable

comparison mercurial/revlog.py @ 4989:1aaed3d69772

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revlog: eliminate diff and patches functions call mdiff variants directly
author Matt Mackall <mpm@selenic.com>
date Mon, 23 Jul 2007 20:44:08 -0500
parents 14486eea8e7a
children 4491125c0f21
comparison
equal deleted inserted replaced
4988:14486eea8e7a 4989:1aaed3d69772
828 def cmp(self, node, text): 828 def cmp(self, node, text):
829 """compare text with a given file revision""" 829 """compare text with a given file revision"""
830 p1, p2 = self.parents(node) 830 p1, p2 = self.parents(node)
831 return hash(text, p1, p2) != node 831 return hash(text, p1, p2) != node
832 832
833 def diff(self, a, b):
834 """return a delta between two revisions"""
835 return mdiff.textdiff(a, b)
836
837 def patches(self, t, pl):
838 """apply a list of patches to a string"""
839 return mdiff.patches(t, pl)
840
841 def chunk(self, rev, df=None): 833 def chunk(self, rev, df=None):
842 start, length = self.start(rev), self.length(rev) 834 start, length = self.start(rev), self.length(rev)
843 if self._inline: 835 if self._inline:
844 start += (rev + 1) * self._io.size 836 start += (rev + 1) * self._io.size
845 end = start + length 837 end = start + length
882 b1 = self.base(rev1) 874 b1 = self.base(rev1)
883 b2 = self.base(rev2) 875 b2 = self.base(rev2)
884 if b1 == b2 and rev1 + 1 == rev2: 876 if b1 == b2 and rev1 + 1 == rev2:
885 return self.chunk(rev2) 877 return self.chunk(rev2)
886 else: 878 else:
887 return self.diff(self.revision(self.node(rev1)), 879 return mdiff.textdiff(self.revision(self.node(rev1)),
888 self.revision(self.node(rev2))) 880 self.revision(self.node(rev2)))
889 881
890 def revision(self, node): 882 def revision(self, node):
891 """return an uncompressed revision of a given""" 883 """return an uncompressed revision of a given"""
892 if node == nullid: 884 if node == nullid:
893 return "" 885 return ""
912 self._loadindex(base, rev + 1) 904 self._loadindex(base, rev + 1)
913 else: 905 else:
914 self._loadindex(base, rev + 1) 906 self._loadindex(base, rev + 1)
915 text = self.chunk(base, df=df) 907 text = self.chunk(base, df=df)
916 908
917 bins = [] 909 bins = [self.chunk(r, df) for r in xrange(base + 1, rev + 1)]
918 for r in xrange(base + 1, rev + 1): 910 text = mdiff.patches(text, bins)
919 bins.append(self.chunk(r, df=df))
920
921 text = self.patches(text, bins)
922
923 p1, p2 = self.parents(node) 911 p1, p2 = self.parents(node)
924 if node != hash(text, p1, p2): 912 if node != hash(text, p1, p2):
925 raise RevlogError(_("integrity check failed on %s:%d") 913 raise RevlogError(_("integrity check failed on %s:%d")
926 % (self.datafile, rev)) 914 % (self.datafile, rev))
927 915
996 offset = self.end(prev) 984 offset = self.end(prev)
997 985
998 if curr: 986 if curr:
999 if not d: 987 if not d:
1000 ptext = self.revision(self.node(prev)) 988 ptext = self.revision(self.node(prev))
1001 d = self.diff(ptext, text) 989 d = mdiff.textdiff(ptext, text)
1002 data = compress(d) 990 data = compress(d)
1003 l = len(data[1]) + len(data[0]) 991 l = len(data[1]) + len(data[0])
1004 dist = l + offset - self.start(base) 992 dist = l + offset - self.start(base)
1005 993
1006 # full versions are inserted when the needed deltas 994 # full versions are inserted when the needed deltas
1148 # flush our writes here so we can read it in revision 1136 # flush our writes here so we can read it in revision
1149 if dfh: 1137 if dfh:
1150 dfh.flush() 1138 dfh.flush()
1151 ifh.flush() 1139 ifh.flush()
1152 text = self.revision(chain) 1140 text = self.revision(chain)
1153 text = self.patches(text, [delta]) 1141 text = mdiff.patches(text, [delta])
1154 chk = self._addrevision(text, transaction, link, p1, p2, None, 1142 chk = self._addrevision(text, transaction, link, p1, p2, None,
1155 ifh, dfh) 1143 ifh, dfh)
1156 if not dfh and not self._inline: 1144 if not dfh and not self._inline:
1157 # addrevision switched from inline to conventional 1145 # addrevision switched from inline to conventional
1158 # reopen the index 1146 # reopen the index