Mercurial > hg > mercurial-crew-with-dirclash

annotate mercurial/manifest.py @ 5173:7e05bdeee7de

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
convert: raise Abort instead of NoRepo when CVS pserver auth fails. At this point we know the source is CVS, so we should not go through the rest of the converters.
author Brendan Cully <brendan@kublai.com>
date Wed, 15 Aug 2007 14:38:18 -0700
parents e45fc5d03798
children 8d00788ca578
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1 # manifest.py - manifest revision class for mercurial
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2 #
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3 # Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
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4 #
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5 # This software may be used and distributed according to the terms
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6 # of the GNU General Public License, incorporated herein by reference.
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7
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8 from revlog import *
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9 from i18n import _
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10 import array, bisect, struct, mdiff
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11
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12 class manifestdict(dict):
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13 def __init__(self, mapping=None, flags=None):
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14 if mapping is None: mapping = {}
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15 if flags is None: flags = {}
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16 dict.__init__(self, mapping)
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17 self._flags = flags
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18 def flags(self, f):
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19 return self._flags.get(f, "")
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20 def execf(self, f):
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21 "test for executable in manifest flags"
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22 return "x" in self.flags(f)
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23 def linkf(self, f):
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24 "test for symlink in manifest flags"
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25 return "l" in self.flags(f)
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26 def set(self, f, execf=False, linkf=False):
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27 if linkf: self._flags[f] = "l"
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28 elif execf: self._flags[f] = "x"
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29 else: self._flags[f] = ""
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30 def copy(self):
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31 return manifestdict(dict.copy(self), dict.copy(self._flags))
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32
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33 class manifest(revlog):
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34 def __init__(self, opener):
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35 self.mapcache = None
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36 self.listcache = None
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37 revlog.__init__(self, opener, "00manifest.i")
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38
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39 def parse(self, lines):
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40 mfdict = manifestdict()
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41 for l in lines.splitlines():
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42 f, n = l.split('\0')
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43 if len(n) > 40:
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44 mfdict._flags[f] = n[40:]
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45 mfdict[f] = bin(n[:40])
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46 else:
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47 mfdict[f] = bin(n)
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48 return mfdict
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49
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50 def readdelta(self, node):
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51 return self.parse(mdiff.patchtext(self.delta(node)))
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52
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53 def read(self, node):
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54 if node == nullid: return manifestdict() # don't upset local cache
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55 if self.mapcache and self.mapcache[0] == node:
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56 return self.mapcache[1]
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57 text = self.revision(node)
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58 self.listcache = array.array('c', text)
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59 mapping = self.parse(text)
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60 self.mapcache = (node, mapping)
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61 return mapping
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62
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63 def _search(self, m, s, lo=0, hi=None):
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64 '''return a tuple (start, end) that says where to find s within m.
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65
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66 If the string is found m[start:end] are the line containing
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67 that string. If start == end the string was not found and
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68 they indicate the proper sorted insertion point. This was
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69 taken from bisect_left, and modified to find line start/end as
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70 it goes along.
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71
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72 m should be a buffer or a string
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73 s is a string'''
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74 def advance(i, c):
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75 while i < lenm and m[i] != c:
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76 i += 1
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77 return i
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78 lenm = len(m)
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79 if not hi:
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80 hi = lenm
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81 while lo < hi:
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82 mid = (lo + hi) // 2
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83 start = mid
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84 while start > 0 and m[start-1] != '\n':
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85 start -= 1
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86 end = advance(start, '\0')
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87 if m[start:end] < s:
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88 # we know that after the null there are 40 bytes of sha1
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89 # this translates to the bisect lo = mid + 1
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90 lo = advance(end + 40, '\n') + 1
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91 else:
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92 # this translates to the bisect hi = mid
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93 hi = start
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94 end = advance(lo, '\0')
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95 found = m[lo:end]
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96 if cmp(s, found) == 0:
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97 # we know that after the null there are 40 bytes of sha1
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98 end = advance(end + 40, '\n')
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99 return (lo, end+1)
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100 else:
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101 return (lo, lo)
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102
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103 def find(self, node, f):
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104 '''look up entry for a single file efficiently.
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105 return (node, flags) pair if found, (None, None) if not.'''
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106 if self.mapcache and node == self.mapcache[0]:
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107 return self.mapcache[1].get(f), self.mapcache[1].flags(f)
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108 text = self.revision(node)
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109 start, end = self._search(text, f)
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110 if start == end:
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111 return None, None
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112 l = text[start:end]
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113 f, n = l.split('\0')
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114 return bin(n[:40]), n[40:-1]
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115
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116 def add(self, map, transaction, link, p1=None, p2=None,
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117 changed=None):
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118 # apply the changes collected during the bisect loop to our addlist
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119 # return a delta suitable for addrevision
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120 def addlistdelta(addlist, x):
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121 # start from the bottom up
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122 # so changes to the offsets don't mess things up.
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123 i = len(x)
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124 while i > 0:
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125 i -= 1
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126 start = x[i][0]
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127 end = x[i][1]
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128 if x[i][2]:
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129 addlist[start:end] = array.array('c', x[i][2])
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130 else:
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131 del addlist[start:end]
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132 return "".join([struct.pack(">lll", d[0], d[1], len(d[2])) + d[2]
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133 for d in x ])
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134
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135 def checkforbidden(f):
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136 if '\n' in f or '\r' in f:
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137 raise RevlogError(_("'\\n' and '\\r' disallowed in filenames"))
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138
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139 # if we're using the listcache, make sure it is valid and
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140 # parented by the same node we're diffing against
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141 if not (changed and self.listcache and p1 and self.mapcache[0] == p1):
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142 files = map.keys()
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143 files.sort()
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144
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145 for f in files:
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146 checkforbidden(f)
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147
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148 # if this is changed to support newlines in filenames,
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149 # be sure to check the templates/ dir again (especially *-raw.tmpl)
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150 text = ["%s\000%s%s\n" % (f, hex(map[f]), map.flags(f))
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151 for f in files]
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152 self.listcache = array.array('c', "".join(text))
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153 cachedelta = None
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154 else:
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155 addlist = self.listcache
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156
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157 for f in changed[0]:
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158 checkforbidden(f)
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159 # combine the changed lists into one list for sorting
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160 work = [[x, 0] for x in changed[0]]
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161 work[len(work):] = [[x, 1] for x in changed[1]]
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162 work.sort()
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163
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164 delta = []
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165 dstart = None
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166 dend = None
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167 dline = [""]
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168 start = 0
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169 # zero copy representation of addlist as a buffer
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170 addbuf = buffer(addlist)
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171
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172 # start with a readonly loop that finds the offset of
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173 # each line and creates the deltas
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174 for w in work:
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175 f = w[0]
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176 # bs will either be the index of the item or the insert point
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177 start, end = self._search(addbuf, f, start)
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178 if w[1] == 0:
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179 l = "%s\000%s%s\n" % (f, hex(map[f]), map.flags(f))
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180 else:
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181 l = ""
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182 if start == end and w[1] == 1:
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183 # item we want to delete was not found, error out
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184 raise AssertionError(
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185 _("failed to remove %s from manifest") % f)
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186 if dstart != None and dstart <= start and dend >= start:
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187 if dend < end:
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188 dend = end
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189 if l:
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190 dline.append(l)
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191 else:
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192 if dstart != None:
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193 delta.append([dstart, dend, "".join(dline)])
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194 dstart = start
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195 dend = end
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196 dline = [l]
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197
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198 if dstart != None:
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199 delta.append([dstart, dend, "".join(dline)])
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200 # apply the delta to the addlist, and get a delta for addrevision
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201 cachedelta = addlistdelta(addlist, delta)
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202
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203 # the delta is only valid if we've been processing the tip revision
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204 if self.mapcache[0] != self.tip():
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205 cachedelta = None
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206 self.listcache = addlist
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207
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208 n = self.addrevision(buffer(self.listcache), transaction, link,
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209 p1, p2, cachedelta)
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210 self.mapcache = (n, map)
0
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parents:
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211
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212 return n