Mercurial > hg
annotate hgext/convert/__init__.py @ 5513:f0c58fd4b798
convert: add support for Subversion as a sink
author | Bryan O'Sullivan <bos@serpentine.com> |
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date | Wed, 07 Nov 2007 18:26:59 -0800 |
parents | 11d7908a3ea8 |
children | 6ffca2bf23da |
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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> |
316 | 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. |
316 | 7 |
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8 from common import NoRepo, SKIPREV, converter_source, converter_sink, mapfile |
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9 from cvs import convert_cvs |
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10 from darcs import darcs_source |
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11 from git import convert_git |
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12 from hg import mercurial_source, mercurial_sink |
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13 from subversion import debugsvnlog, svn_source, svn_sink |
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14 import filemap |
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15 |
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16 import os, shutil |
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17 from mercurial import hg, ui, util, commands |
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18 from mercurial.i18n import _ |
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19 |
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20 commands.norepo += " convert debugsvnlog" |
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21 |
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22 source_converters = [ |
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23 ('cvs', convert_cvs), |
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24 ('git', convert_git), |
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25 ('svn', svn_source), |
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26 ('hg', mercurial_source), |
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27 ('darcs', darcs_source), |
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28 ] |
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29 |
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30 sink_converters = [ |
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31 ('hg', mercurial_sink), |
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32 ('svn', svn_sink), |
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33 ] |
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34 |
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35 def convertsource(ui, path, type, rev): |
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36 for name, source in source_converters: |
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37 try: |
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38 if not type or name == type: |
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39 return source(ui, path, rev) |
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40 except NoRepo, inst: |
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41 ui.note(_("convert: %s\n") % inst) |
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42 raise util.Abort('%s: unknown repository type' % path) |
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43 |
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44 def convertsink(ui, path, type): |
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45 for name, sink in sink_converters: |
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46 try: |
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47 if not type or name == type: |
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48 return sink(ui, path) |
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49 except NoRepo, inst: |
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50 ui.note(_("convert: %s\n") % inst) |
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51 raise util.Abort('%s: unknown repository type' % path) |
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52 |
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53 class converter(object): |
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54 def __init__(self, ui, source, dest, revmapfile, opts): |
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55 |
316 | 56 self.source = source |
57 self.dest = dest | |
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58 self.ui = ui |
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59 self.opts = opts |
316 | 60 self.commitcache = {} |
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61 self.authors = {} |
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62 self.authorfile = None |
316 | 63 |
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64 self.map = mapfile(ui, revmapfile) |
316 | 65 |
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66 # Read first the dst author map if any |
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67 authorfile = self.dest.authorfile() |
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68 if authorfile and os.path.exists(authorfile): |
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69 self.readauthormap(authorfile) |
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70 # Extend/Override with new author map if necessary |
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71 if opts.get('authors'): |
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72 self.readauthormap(opts.get('authors')) |
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73 self.authorfile = self.dest.authorfile() |
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74 |
316 | 75 def walktree(self, heads): |
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76 '''Return a mapping that identifies the uncommitted parents of every |
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77 uncommitted changeset.''' |
316 | 78 visit = heads |
79 known = {} | |
80 parents = {} | |
81 while visit: | |
82 n = visit.pop(0) | |
83 if n in known or n in self.map: continue | |
84 known[n] = 1 | |
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85 commit = self.cachecommit(n) |
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86 parents[n] = [] |
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87 for p in commit.parents: |
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88 parents[n].append(p) |
316 | 89 visit.append(p) |
90 | |
91 return parents | |
92 | |
93 def toposort(self, parents): | |
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94 '''Return an ordering such that every uncommitted changeset is |
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95 preceeded by all its uncommitted ancestors.''' |
316 | 96 visit = parents.keys() |
97 seen = {} | |
98 children = {} | |
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99 |
316 | 100 while visit: |
101 n = visit.pop(0) | |
102 if n in seen: continue | |
103 seen[n] = 1 | |
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104 # Ensure that nodes without parents are present in the 'children' |
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105 # mapping. |
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106 children.setdefault(n, []) |
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107 for p in parents[n]: |
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108 if not p in self.map: |
316 | 109 visit.append(p) |
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110 children.setdefault(p, []).append(n) |
316 | 111 |
112 s = [] | |
113 removed = {} | |
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114 visit = children.keys() |
316 | 115 while visit: |
116 n = visit.pop(0) | |
117 if n in removed: continue | |
118 dep = 0 | |
119 if n in parents: | |
120 for p in parents[n]: | |
121 if p in self.map: continue | |
122 if p not in removed: | |
123 # we're still dependent | |
124 visit.append(n) | |
125 dep = 1 | |
126 break | |
127 | |
128 if not dep: | |
129 # all n's parents are in the list | |
130 removed[n] = 1 | |
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131 if n not in self.map: |
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132 s.append(n) |
316 | 133 if n in children: |
134 for c in children[n]: | |
135 visit.insert(0, c) | |
136 | |
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137 if self.opts.get('datesort'): |
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138 depth = {} |
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139 for n in s: |
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140 depth[n] = 0 |
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141 pl = [p for p in self.commitcache[n].parents |
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142 if p not in self.map] |
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143 if pl: |
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144 depth[n] = max([depth[p] for p in pl]) + 1 |
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145 |
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146 s = [(depth[n], self.commitcache[n].date, n) for n in s] |
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147 s.sort() |
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148 s = [e[2] for e in s] |
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149 |
316 | 150 return s |
151 | |
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152 def writeauthormap(self): |
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153 authorfile = self.authorfile |
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154 if authorfile: |
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155 self.ui.status('Writing author map file %s\n' % authorfile) |
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156 ofile = open(authorfile, 'w+') |
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157 for author in self.authors: |
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158 ofile.write("%s=%s\n" % (author, self.authors[author])) |
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159 ofile.close() |
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160 |
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161 def readauthormap(self, authorfile): |
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162 afile = open(authorfile, 'r') |
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163 for line in afile: |
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164 try: |
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165 srcauthor = line.split('=')[0].strip() |
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166 dstauthor = line.split('=')[1].strip() |
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167 if srcauthor in self.authors and dstauthor != self.authors[srcauthor]: |
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168 self.ui.status( |
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169 'Overriding mapping for author %s, was %s, will be %s\n' |
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170 % (srcauthor, self.authors[srcauthor], dstauthor)) |
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171 else: |
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172 self.ui.debug('Mapping author %s to %s\n' |
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173 % (srcauthor, dstauthor)) |
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174 self.authors[srcauthor] = dstauthor |
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175 except IndexError: |
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176 self.ui.warn( |
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177 'Ignoring bad line in author file map %s: %s\n' |
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178 % (authorfile, line)) |
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179 afile.close() |
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180 |
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181 def cachecommit(self, rev): |
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182 commit = self.source.getcommit(rev) |
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183 commit.author = self.authors.get(commit.author, commit.author) |
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184 self.commitcache[rev] = commit |
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185 return commit |
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186 |
316 | 187 def copy(self, rev): |
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188 commit = self.commitcache[rev] |
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189 do_copies = hasattr(self.dest, 'copyfile') |
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190 filenames = [] |
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191 |
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192 changes = self.source.getchanges(rev) |
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193 if isinstance(changes, basestring): |
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194 if changes == SKIPREV: |
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195 dest = SKIPREV |
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196 else: |
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197 dest = self.map[changes] |
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198 self.map[rev] = dest |
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199 return |
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200 files, copies = changes |
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201 parents = [self.map[r] for r in commit.parents] |
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202 if commit.parents: |
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203 prev = commit.parents[0] |
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204 if prev not in self.commitcache: |
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205 self.cachecommit(prev) |
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206 pbranch = self.commitcache[prev].branch |
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207 else: |
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208 pbranch = None |
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209 self.dest.setbranch(commit.branch, pbranch, parents) |
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210 for f, v in files: |
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211 filenames.append(f) |
316 | 212 try: |
213 data = self.source.getfile(f, v) | |
214 except IOError, inst: | |
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215 self.dest.delfile(f) |
316 | 216 else: |
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217 e = self.source.getmode(f, v) |
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218 self.dest.putfile(f, e, data) |
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219 if do_copies: |
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220 if f in copies: |
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221 copyf = copies[f] |
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222 # Merely marks that a copy happened. |
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223 self.dest.copyfile(copyf, f) |
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224 |
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225 newnode = self.dest.putcommit(filenames, parents, commit) |
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226 self.map[rev] = newnode |
316 | 227 |
228 def convert(self): | |
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229 try: |
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230 self.source.before() |
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231 self.dest.before() |
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232 self.source.setrevmap(self.map) |
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233 self.ui.status("scanning source...\n") |
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234 heads = self.source.getheads() |
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235 parents = self.walktree(heads) |
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236 self.ui.status("sorting...\n") |
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237 t = self.toposort(parents) |
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238 num = len(t) |
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239 c = None |
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240 |
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241 self.ui.status("converting...\n") |
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242 for c in t: |
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243 num -= 1 |
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244 desc = self.commitcache[c].desc |
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245 if "\n" in desc: |
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246 desc = desc.splitlines()[0] |
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247 self.ui.status("%d %s\n" % (num, desc)) |
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248 self.copy(c) |
316 | 249 |
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250 tags = self.source.gettags() |
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251 ctags = {} |
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252 for k in tags: |
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253 v = tags[k] |
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254 if self.map.get(v, SKIPREV) != SKIPREV: |
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255 ctags[k] = self.map[v] |
316 | 256 |
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257 if c and ctags: |
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258 nrev = self.dest.puttags(ctags) |
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259 # write another hash correspondence to override the previous |
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260 # one so we don't end up with extra tag heads |
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261 if nrev: |
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262 self.map[c] = nrev |
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263 |
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264 self.writeauthormap() |
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265 finally: |
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266 self.cleanup() |
694 | 267 |
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268 def cleanup(self): |
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269 try: |
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270 self.dest.after() |
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271 finally: |
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272 self.source.after() |
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273 self.map.close() |
694 | 274 |
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275 def convert(ui, src, dest=None, revmapfile=None, **opts): |
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276 """Convert a foreign SCM repository to a Mercurial one. |
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277 |
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278 Accepted source formats: |
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279 - Mercurial |
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280 - CVS |
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281 - Darcs |
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282 - git |
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283 - Subversion |
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284 |
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285 Accepted destination formats: |
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286 - Mercurial |
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287 - Subversion (history on branches is not preserved) |
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288 |
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289 If no revision is given, all revisions will be converted. Otherwise, |
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290 convert will only import up to the named revision (given in a format |
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291 understood by the source). |
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292 |
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293 If no destination directory name is specified, it defaults to the |
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294 basename of the source with '-hg' appended. If the destination |
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295 repository doesn't exist, it will be created. |
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296 |
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297 If <MAPFILE> isn't given, it will be put in a default location |
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298 (<dest>/.hg/shamap by default). The <MAPFILE> is a simple text |
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299 file that maps each source commit ID to the destination ID for |
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300 that revision, like so: |
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301 <source ID> <destination ID> |
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302 |
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303 If the file doesn't exist, it's automatically created. It's updated |
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304 on each commit copied, so convert-repo can be interrupted and can |
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305 be run repeatedly to copy new commits. |
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306 |
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307 The [username mapping] file is a simple text file that maps each source |
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308 commit author to a destination commit author. It is handy for source SCMs |
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309 that use unix logins to identify authors (eg: CVS). One line per author |
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310 mapping and the line format is: |
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311 srcauthor=whatever string you want |
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312 |
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313 The filemap is a file that allows filtering and remapping of files |
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314 and directories. Comment lines start with '#'. Each line can |
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315 contain one of the following directives: |
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316 |
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317 include path/to/file |
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318 |
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319 exclude path/to/file |
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320 |
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321 rename from/file to/file |
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322 |
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323 The 'include' directive causes a file, or all files under a |
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324 directory, to be included in the destination repository, and the |
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325 exclusion of all other files and dirs not explicitely included. |
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326 The 'exclude' directive causes files or directories to be omitted. |
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327 The 'rename' directive renames a file or directory. To rename from a |
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328 subdirectory into the root of the repository, use '.' as the path to |
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329 rename to. |
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330 """ |
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331 |
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332 util._encoding = 'UTF-8' |
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333 |
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334 if not dest: |
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335 dest = hg.defaultdest(src) + "-hg" |
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336 ui.status("assuming destination %s\n" % dest) |
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337 |
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338 destc = convertsink(ui, dest, opts.get('dest_type')) |
316 | 339 |
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340 try: |
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341 srcc = convertsource(ui, src, opts.get('source_type'), |
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342 opts.get('rev')) |
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343 except Exception: |
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344 for path in destc.created: |
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345 shutil.rmtree(path, True) |
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346 raise |
316 | 347 |
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348 fmap = opts.get('filemap') |
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349 if fmap: |
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350 srcc = filemap.filemap_source(ui, srcc, fmap) |
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351 destc.setfilemapmode(True) |
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352 |
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353 if not revmapfile: |
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354 try: |
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355 revmapfile = destc.revmapfile() |
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356 except: |
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357 revmapfile = os.path.join(destc, "map") |
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358 |
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359 c = converter(ui, srcc, destc, revmapfile, opts) |
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360 c.convert() |
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361 |
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362 |
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363 cmdtable = { |
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364 "convert": |
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365 (convert, |
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366 [('A', 'authors', '', 'username mapping filename'), |
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367 ('d', 'dest-type', '', 'destination repository type'), |
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368 ('', 'filemap', '', 'remap file names using contents of file'), |
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369 ('r', 'rev', '', 'import up to target revision REV'), |
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370 ('s', 'source-type', '', 'source repository type'), |
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371 ('', 'datesort', None, 'try to sort changesets by date')], |
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372 'hg convert [OPTION]... SOURCE [DEST [MAPFILE]]'), |
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373 "debugsvnlog": |
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374 (debugsvnlog, |
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375 [], |
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376 'hg debugsvnlog'), |
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377 } |
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378 |