Mercurial > hg > mercurial-crew-with-dirclash

annotate hgext/convert/__init__.py @ 4753:07efcce17d28

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
convert: add -r argument specifying latest revision to convert
author Brendan Cully <brendan@kublai.com>
date Sun, 01 Jul 2007 15:02:15 -0700
parents 1069205a8894
children 7c8cd400e86a
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rev   line source
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1 # convert.py Foreign SCM converter
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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 common import NoRepo
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9 from cvs import convert_cvs
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10 from git import convert_git
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11 from hg import convert_mercurial
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12
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13 import os
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14 from mercurial import hg, ui, util, commands
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15
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16 commands.norepo += " convert"
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17
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18 converters = [convert_cvs, convert_git, convert_mercurial]
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19
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20 def converter(ui, path, rev=None):
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21 if not os.path.isdir(path):
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22 raise util.Abort("%s: not a directory" % path)
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23 for c in converters:
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24 try:
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25 if rev:
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26 return c(ui, path, rev=rev)
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27 else:
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28 return c(ui, path)
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29 except NoRepo:
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30 pass
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31 raise util.Abort("%s: unknown repository type" % path)
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32
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33 class convert(object):
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34 def __init__(self, ui, source, dest, mapfile, opts):
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35
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36 self.source = source
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37 self.dest = dest
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38 self.ui = ui
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39 self.opts = opts
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40 self.commitcache = {}
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41 self.mapfile = mapfile
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42 self.mapfilefd = None
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43 self.authors = {}
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44 self.authorfile = None
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46 self.map = {}
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47 try:
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48 origmapfile = open(self.mapfile, 'r')
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49 for l in origmapfile:
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50 sv, dv = l[:-1].split()
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51 self.map[sv] = dv
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52 origmapfile.close()
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53 except IOError:
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54 pass
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55
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56 # Read first the dst author map if any
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57 authorfile = self.dest.authorfile()
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58 if authorfile and os.path.exists(authorfile):
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59 self.readauthormap(authorfile)
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60 # Extend/Override with new author map if necessary
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61 if opts.get('authors'):
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62 self.readauthormap(opts.get('authors'))
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63 self.authorfile = self.dest.authorfile()
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64
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65 def walktree(self, heads):
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66 '''Return a mapping that identifies the uncommitted parents of every
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67 uncommitted changeset.'''
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68 visit = heads
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69 known = {}
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70 parents = {}
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71 while visit:
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72 n = visit.pop(0)
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73 if n in known or n in self.map: continue
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74 known[n] = 1
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75 self.commitcache[n] = self.source.getcommit(n)
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76 cp = self.commitcache[n].parents
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77 parents[n] = []
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78 for p in cp:
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79 parents[n].append(p)
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80 visit.append(p)
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81
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82 return parents
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83
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84 def toposort(self, parents):
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85 '''Return an ordering such that every uncommitted changeset is
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86 preceeded by all its uncommitted ancestors.'''
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87 visit = parents.keys()
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88 seen = {}
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89 children = {}
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90
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91 while visit:
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92 n = visit.pop(0)
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93 if n in seen: continue
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94 seen[n] = 1
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95 # Ensure that nodes without parents are present in the 'children'
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96 # mapping.
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97 children.setdefault(n, [])
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98 for p in parents[n]:
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99 if not p in self.map:
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100 visit.append(p)
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101 children.setdefault(p, []).append(n)
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102
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103 s = []
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104 removed = {}
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105 visit = children.keys()
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106 while visit:
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107 n = visit.pop(0)
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108 if n in removed: continue
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109 dep = 0
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110 if n in parents:
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111 for p in parents[n]:
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112 if p in self.map: continue
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113 if p not in removed:
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114 # we're still dependent
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115 visit.append(n)
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116 dep = 1
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117 break
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118
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119 if not dep:
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120 # all n's parents are in the list
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121 removed[n] = 1
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122 if n not in self.map:
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123 s.append(n)
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124 if n in children:
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125 for c in children[n]:
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126 visit.insert(0, c)
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127
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128 if self.opts.get('datesort'):
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129 depth = {}
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130 for n in s:
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131 depth[n] = 0
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132 pl = [p for p in self.commitcache[n].parents
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133 if p not in self.map]
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134 if pl:
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135 depth[n] = max([depth[p] for p in pl]) + 1
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136
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137 s = [(depth[n], self.commitcache[n].date, n) for n in s]
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138 s.sort()
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139 s = [e[2] for e in s]
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140
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141 return s
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142
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143 def mapentry(self, src, dst):
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144 if self.mapfilefd is None:
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145 try:
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146 self.mapfilefd = open(self.mapfile, "a")
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147 except IOError, (errno, strerror):
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148 raise util.Abort("Could not open map file %s: %s, %s\n" % (self.mapfile, errno, strerror))
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149 self.map[src] = dst
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150 self.mapfilefd.write("%s %s\n" % (src, dst))
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151 self.mapfilefd.flush()
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152
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153 def writeauthormap(self):
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154 authorfile = self.authorfile
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155 if authorfile:
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156 self.ui.status('Writing author map file %s\n' % authorfile)
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diff changeset
157 ofile = open(authorfile, 'w+')
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diff changeset
158 for author in self.authors:
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159 ofile.write("%s=%s\n" % (author, self.authors[author]))
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diff changeset
160 ofile.close()
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diff changeset
161
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diff changeset
162 def readauthormap(self, authorfile):
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diff changeset
163 afile = open(authorfile, 'r')
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diff changeset
164 for line in afile:
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diff changeset
165 try:
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diff changeset
166 srcauthor = line.split('=')[0].strip()
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diff changeset
167 dstauthor = line.split('=')[1].strip()
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diff changeset
168 if srcauthor in self.authors and dstauthor != self.authors[srcauthor]:
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diff changeset
169 self.ui.status(
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diff changeset
170 'Overriding mapping for author %s, was %s, will be %s\n'
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diff changeset
171 % (srcauthor, self.authors[srcauthor], dstauthor))
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diff changeset
172 else:
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diff changeset
173 self.ui.debug('Mapping author %s to %s\n'
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diff changeset
174 % (srcauthor, dstauthor))
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diff changeset
175 self.authors[srcauthor] = dstauthor
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diff changeset
176 except IndexError:
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diff changeset
177 self.ui.warn(
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diff changeset
178 'Ignoring bad line in author file map %s: %s\n'
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diff changeset
179 % (authorfile, line))
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diff changeset
180 afile.close()
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diff changeset
181
316
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182 def copy(self, rev):
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183 c = self.commitcache[rev]
316
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184 files = self.source.getchanges(rev)
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185
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186 for f, v in files:
316
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187 try:
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188 data = self.source.getfile(f, v)
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189 except IOError, inst:
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190 self.dest.delfile(f)
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parents:
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191 else:
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558f52943cd2 convert-repo: add CVS exec bit support
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diff changeset
192 e = self.source.getmode(f, v)
316
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193 self.dest.putfile(f, e, data)
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parents:
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194
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diff changeset
195 r = [self.map[v] for v in c.parents]
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196 f = [f for f, v in files]
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diff changeset
197 newnode = self.dest.putcommit(f, r, c)
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diff changeset
198 self.mapentry(rev, newnode)
316
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199
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200 def convert(self):
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diff changeset
201 try:
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202 self.ui.status("scanning source...\n")
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diff changeset
203 heads = self.source.getheads()
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diff changeset
204 parents = self.walktree(heads)
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diff changeset
205 self.ui.status("sorting...\n")
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diff changeset
206 t = self.toposort(parents)
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diff changeset
207 num = len(t)
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diff changeset
208 c = None
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diff changeset
209
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diff changeset
210 self.ui.status("converting...\n")
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diff changeset
211 for c in t:
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diff changeset
212 num -= 1
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diff changeset
213 desc = self.commitcache[c].desc
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diff changeset
214 if "\n" in desc:
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diff changeset
215 desc = desc.splitlines()[0]
4589
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diff changeset
216 author = self.commitcache[c].author
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diff changeset
217 author = self.authors.get(author, author)
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diff changeset
218 self.commitcache[c].author = author
4588
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diff changeset
219 self.ui.status("%d %s\n" % (num, desc))
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diff changeset
220 self.copy(c)
316
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221
4588
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diff changeset
222 tags = self.source.gettags()
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diff changeset
223 ctags = {}
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diff changeset
224 for k in tags:
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diff changeset
225 v = tags[k]
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diff changeset
226 if v in self.map:
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diff changeset
227 ctags[k] = self.map[v]
316
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diff changeset
228
4588
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diff changeset
229 if c and ctags:
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diff changeset
230 nrev = self.dest.puttags(ctags)
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diff changeset
231 # write another hash correspondence to override the previous
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diff changeset
232 # one so we don't end up with extra tag heads
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diff changeset
233 if nrev:
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diff changeset
234 self.mapentry(c, nrev)
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235
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diff changeset
236 self.writeauthormap()
4588
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diff changeset
237 finally:
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diff changeset
238 self.cleanup()
694
51eb248d3348 Teach convert-repo about tags
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diff changeset
239
4588
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diff changeset
240 def cleanup(self):
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diff changeset
241 if self.mapfilefd:
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diff changeset
242 self.mapfilefd.close()
694
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parents: 692
diff changeset
243
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diff changeset
244 def _convert(ui, src, dest=None, mapfile=None, **opts):
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diff changeset
245 '''Convert a foreign SCM repository to a Mercurial one.
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diff changeset
246
ac2fe196ac9b Turns convert.py into a real extension
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diff changeset
247 Accepted source formats:
ac2fe196ac9b Turns convert.py into a real extension
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248 - GIT
ac2fe196ac9b Turns convert.py into a real extension
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diff changeset
249 - CVS
ac2fe196ac9b Turns convert.py into a real extension
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parents: 4512
diff changeset
250
ac2fe196ac9b Turns convert.py into a real extension
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diff changeset
251 Accepted destination formats:
ac2fe196ac9b Turns convert.py into a real extension
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diff changeset
252 - Mercurial
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diff changeset
253
4753
07efcce17d28 convert: add -r argument specifying latest revision to convert
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parents: 4719
diff changeset
254 If no revision is given, all revisions will be converted. Otherwise,
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diff changeset
255 convert will only import up to the named revision (given in a format
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parents: 4719
diff changeset
256 understood by the source).
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diff changeset
257
4513
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diff changeset
258 If destination isn't given, a new Mercurial repo named <src>-hg will
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diff changeset
259 be created. If <mapfile> isn't given, it will be put in a default
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diff changeset
260 location (<dest>/.hg/shamap by default)
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diff changeset
261
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diff changeset
262 The <mapfile> is a simple text file that maps each source commit ID to
ac2fe196ac9b Turns convert.py into a real extension
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diff changeset
263 the destination ID for that revision, like so:
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diff changeset
264 <source ID> <destination ID>
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diff changeset
265
ac2fe196ac9b Turns convert.py into a real extension
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diff changeset
266 If the file doesn't exist, it's automatically created. It's updated
ac2fe196ac9b Turns convert.py into a real extension
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parents: 4512
diff changeset
267 on each commit copied, so convert-repo can be interrupted and can
ac2fe196ac9b Turns convert.py into a real extension
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diff changeset
268 be run repeatedly to copy new commits.
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diff changeset
269
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diff changeset
270 The [username mapping] file is a simple text file that maps each source
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diff changeset
271 commit author to a destination commit author. It is handy for source SCMs
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diff changeset
272 that use unix logins to identify authors (eg: CVS). One line per author
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parents: 4588
diff changeset
273 mapping and the line format is:
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diff changeset
274 srcauthor=whatever string you want
4513
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diff changeset
275 '''
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diff changeset
276
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diff changeset
277 srcc = converter(ui, src, rev=opts.get('rev'))
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0fab73b3f453 convert-repo: add some smarts
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diff changeset
278 if not hasattr(srcc, "getcommit"):
4532
c3a78a49d7f0 Some small cleanups for convert extension:
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parents: 4521
diff changeset
279 raise util.Abort("%s: can't read from this repo type" % src)
3947
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diff changeset
280
0fab73b3f453 convert-repo: add some smarts
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diff changeset
281 if not dest:
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diff changeset
282 dest = src + "-hg"
4513
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diff changeset
283 ui.status("assuming destination %s\n" % dest)
4521
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parents: 4520
diff changeset
284
d634b61e9cec Add some more smart when initializing destination repository
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parents: 4520
diff changeset
285 # Try to be smart and initalize things when required
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parents: 4520
diff changeset
286 if os.path.isdir(dest):
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parents: 4520
diff changeset
287 if len(os.listdir(dest)) > 0:
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parents: 4520
diff changeset
288 try:
d634b61e9cec Add some more smart when initializing destination repository
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parents: 4520
diff changeset
289 hg.repository(ui, dest)
d634b61e9cec Add some more smart when initializing destination repository
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diff changeset
290 ui.status("destination %s is a Mercurial repository\n" % dest)
4532
c3a78a49d7f0 Some small cleanups for convert extension:
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parents: 4521
diff changeset
291 except hg.RepoError:
4521
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parents: 4520
diff changeset
292 raise util.Abort(
4532
c3a78a49d7f0 Some small cleanups for convert extension:
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parents: 4521
diff changeset
293 "destination directory %s is not empty.\n"
c3a78a49d7f0 Some small cleanups for convert extension:
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diff changeset
294 "Please specify an empty directory to be initialized\n"
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diff changeset
295 "or an already initialized mercurial repository"
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diff changeset
296 % dest)
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297 else:
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298 ui.status("initializing destination %s repository\n" % dest)
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299 hg.repository(ui, dest, create=True)
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300 elif os.path.exists(dest):
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301 raise util.Abort("destination %s exists and is not a directory" % dest)
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302 else:
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303 ui.status("initializing destination %s repository\n" % dest)
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304 hg.repository(ui, dest, create=True)
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305
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306 destc = converter(ui, dest)
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307 if not hasattr(destc, "putcommit"):
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308 raise util.Abort("%s: can't write to this repo type" % src)
316
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309
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310 if not mapfile:
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311 try:
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312 mapfile = destc.mapfile()
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313 except:
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314 mapfile = os.path.join(destc, "map")
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315
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316 c = convert(ui, srcc, destc, mapfile, opts)
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317 c.convert()
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318
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319 cmdtable = {
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320 "convert":
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321 (_convert,
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322 [('A', 'authors', '', 'username mapping filename'),
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323 ('r', 'rev', '', 'import up to target revision REV'),
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324 ('', 'datesort', None, 'try to sort changesets by date')],
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325 'hg convert [OPTION]... SOURCE [DEST [MAPFILE]]'),
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326 }