Mercurial > hg > mercurial-crew-with-dirclash
annotate hgext/convert/__init__.py @ 5376:d60a067227a5
convert: move filemapper class to a separate file
author | Alexis S. L. Carvalho <alexis@cecm.usp.br> |
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date | Thu, 04 Oct 2007 23:21:37 -0300 |
parents | dae323e453aa |
children | 756a43a30e34 |
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> |
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 |
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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 convert_svn, debugsvnlog |
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14 |
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15 import os, shutil |
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16 from mercurial import hg, ui, util, commands |
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17 from mercurial.i18n import _ |
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18 |
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19 commands.norepo += " convert debugsvnlog" |
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20 |
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21 converters = [convert_cvs, convert_git, convert_svn, mercurial_source, |
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22 mercurial_sink, darcs_source] |
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23 |
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24 def convertsource(ui, path, **opts): |
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25 for c in converters: |
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26 try: |
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27 return c.getcommit and c(ui, path, **opts) |
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28 except (AttributeError, NoRepo): |
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29 pass |
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30 raise util.Abort('%s: unknown repository type' % path) |
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31 |
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32 def convertsink(ui, path): |
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33 if not os.path.isdir(path): |
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34 raise util.Abort("%s: not a directory" % path) |
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35 for c in converters: |
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36 try: |
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37 return c.putcommit and c(ui, path) |
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38 except (AttributeError, NoRepo): |
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39 pass |
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40 raise util.Abort('%s: unknown repository type' % path) |
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41 |
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42 class converter(object): |
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43 def __init__(self, ui, source, dest, revmapfile, opts): |
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44 |
316 | 45 self.source = source |
46 self.dest = dest | |
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47 self.ui = ui |
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48 self.opts = opts |
316 | 49 self.commitcache = {} |
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50 self.revmapfile = revmapfile |
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51 self.revmapfilefd = None |
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52 self.authors = {} |
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53 self.authorfile = None |
316 | 54 |
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55 self.maporder = [] |
316 | 56 self.map = {} |
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57 try: |
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58 origrevmapfile = open(self.revmapfile, 'r') |
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59 for l in origrevmapfile: |
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60 sv, dv = l[:-1].split() |
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61 if sv not in self.map: |
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62 self.maporder.append(sv) |
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63 self.map[sv] = dv |
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64 origrevmapfile.close() |
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65 except IOError: |
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66 pass |
316 | 67 |
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68 # Read first the dst author map if any |
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69 authorfile = self.dest.authorfile() |
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70 if authorfile and os.path.exists(authorfile): |
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71 self.readauthormap(authorfile) |
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72 # Extend/Override with new author map if necessary |
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73 if opts.get('authors'): |
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74 self.readauthormap(opts.get('authors')) |
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75 self.authorfile = self.dest.authorfile() |
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76 |
316 | 77 def walktree(self, heads): |
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78 '''Return a mapping that identifies the uncommitted parents of every |
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79 uncommitted changeset.''' |
316 | 80 visit = heads |
81 known = {} | |
82 parents = {} | |
83 while visit: | |
84 n = visit.pop(0) | |
85 if n in known or n in self.map: continue | |
86 known[n] = 1 | |
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87 commit = self.cachecommit(n) |
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88 parents[n] = [] |
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89 for p in commit.parents: |
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90 parents[n].append(p) |
316 | 91 visit.append(p) |
92 | |
93 return parents | |
94 | |
95 def toposort(self, parents): | |
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96 '''Return an ordering such that every uncommitted changeset is |
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97 preceeded by all its uncommitted ancestors.''' |
316 | 98 visit = parents.keys() |
99 seen = {} | |
100 children = {} | |
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101 |
316 | 102 while visit: |
103 n = visit.pop(0) | |
104 if n in seen: continue | |
105 seen[n] = 1 | |
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106 # Ensure that nodes without parents are present in the 'children' |
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107 # mapping. |
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108 children.setdefault(n, []) |
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109 for p in parents[n]: |
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110 if not p in self.map: |
316 | 111 visit.append(p) |
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112 children.setdefault(p, []).append(n) |
316 | 113 |
114 s = [] | |
115 removed = {} | |
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116 visit = children.keys() |
316 | 117 while visit: |
118 n = visit.pop(0) | |
119 if n in removed: continue | |
120 dep = 0 | |
121 if n in parents: | |
122 for p in parents[n]: | |
123 if p in self.map: continue | |
124 if p not in removed: | |
125 # we're still dependent | |
126 visit.append(n) | |
127 dep = 1 | |
128 break | |
129 | |
130 if not dep: | |
131 # all n's parents are in the list | |
132 removed[n] = 1 | |
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133 if n not in self.map: |
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134 s.append(n) |
316 | 135 if n in children: |
136 for c in children[n]: | |
137 visit.insert(0, c) | |
138 | |
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139 if self.opts.get('datesort'): |
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140 depth = {} |
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141 for n in s: |
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142 depth[n] = 0 |
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143 pl = [p for p in self.commitcache[n].parents |
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144 if p not in self.map] |
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145 if pl: |
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146 depth[n] = max([depth[p] for p in pl]) + 1 |
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147 |
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148 s = [(depth[n], self.commitcache[n].date, n) for n in s] |
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149 s.sort() |
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150 s = [e[2] for e in s] |
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151 |
316 | 152 return s |
153 | |
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154 def mapentry(self, src, dst): |
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155 if self.revmapfilefd is None: |
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156 try: |
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157 self.revmapfilefd = open(self.revmapfile, "a") |
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158 except IOError, (errno, strerror): |
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159 raise util.Abort("Could not open map file %s: %s, %s\n" % (self.revmapfile, errno, strerror)) |
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160 self.map[src] = dst |
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161 self.revmapfilefd.write("%s %s\n" % (src, dst)) |
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162 self.revmapfilefd.flush() |
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163 |
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164 def writeauthormap(self): |
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165 authorfile = self.authorfile |
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166 if authorfile: |
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167 self.ui.status('Writing author map file %s\n' % authorfile) |
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168 ofile = open(authorfile, 'w+') |
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169 for author in self.authors: |
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170 ofile.write("%s=%s\n" % (author, self.authors[author])) |
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171 ofile.close() |
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172 |
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173 def readauthormap(self, authorfile): |
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174 afile = open(authorfile, 'r') |
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175 for line in afile: |
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176 try: |
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177 srcauthor = line.split('=')[0].strip() |
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178 dstauthor = line.split('=')[1].strip() |
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179 if srcauthor in self.authors and dstauthor != self.authors[srcauthor]: |
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180 self.ui.status( |
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181 'Overriding mapping for author %s, was %s, will be %s\n' |
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182 % (srcauthor, self.authors[srcauthor], dstauthor)) |
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183 else: |
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184 self.ui.debug('Mapping author %s to %s\n' |
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185 % (srcauthor, dstauthor)) |
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186 self.authors[srcauthor] = dstauthor |
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187 except IndexError: |
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188 self.ui.warn( |
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189 'Ignoring bad line in author file map %s: %s\n' |
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190 % (authorfile, line)) |
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191 afile.close() |
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192 |
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193 def cachecommit(self, rev): |
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194 commit = self.source.getcommit(rev) |
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195 commit.author = self.authors.get(commit.author, commit.author) |
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196 self.commitcache[rev] = commit |
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197 return commit |
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198 |
316 | 199 def copy(self, rev): |
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200 commit = self.commitcache[rev] |
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201 do_copies = hasattr(self.dest, 'copyfile') |
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202 filenames = [] |
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203 |
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204 changes = self.source.getchanges(rev) |
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205 if isinstance(changes, basestring): |
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206 if changes == SKIPREV: |
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207 dest = SKIPREV |
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208 else: |
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209 dest = self.map[changes] |
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210 self.mapentry(rev, dest) |
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211 return |
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212 files, copies = changes |
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213 parents = [self.map[r] for r in commit.parents] |
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214 if commit.parents: |
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215 prev = commit.parents[0] |
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216 if prev not in self.commitcache: |
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217 self.cachecommit(prev) |
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218 pbranch = self.commitcache[prev].branch |
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219 else: |
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220 pbranch = None |
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221 self.dest.setbranch(commit.branch, pbranch, parents) |
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222 for f, v in files: |
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223 filenames.append(f) |
316 | 224 try: |
225 data = self.source.getfile(f, v) | |
226 except IOError, inst: | |
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227 self.dest.delfile(f) |
316 | 228 else: |
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229 e = self.source.getmode(f, v) |
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230 self.dest.putfile(f, e, data) |
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231 if do_copies: |
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232 if f in copies: |
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233 copyf = copies[f] |
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234 # Merely marks that a copy happened. |
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235 self.dest.copyfile(copyf, f) |
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236 |
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237 newnode = self.dest.putcommit(filenames, parents, commit) |
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238 self.mapentry(rev, newnode) |
316 | 239 |
240 def convert(self): | |
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241 try: |
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242 self.source.before() |
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243 self.dest.before() |
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244 self.source.setrevmap(self.map, self.maporder) |
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245 self.ui.status("scanning source...\n") |
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246 heads = self.source.getheads() |
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247 parents = self.walktree(heads) |
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248 self.ui.status("sorting...\n") |
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249 t = self.toposort(parents) |
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250 num = len(t) |
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251 c = None |
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252 |
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253 self.ui.status("converting...\n") |
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254 for c in t: |
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255 num -= 1 |
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256 desc = self.commitcache[c].desc |
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257 if "\n" in desc: |
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258 desc = desc.splitlines()[0] |
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259 self.ui.status("%d %s\n" % (num, desc)) |
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260 self.copy(c) |
316 | 261 |
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262 tags = self.source.gettags() |
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263 ctags = {} |
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264 for k in tags: |
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265 v = tags[k] |
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266 if self.map.get(v, SKIPREV) != SKIPREV: |
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267 ctags[k] = self.map[v] |
316 | 268 |
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269 if c and ctags: |
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270 nrev = self.dest.puttags(ctags) |
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271 # write another hash correspondence to override the previous |
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272 # one so we don't end up with extra tag heads |
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273 if nrev: |
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274 self.mapentry(c, nrev) |
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275 |
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276 self.writeauthormap() |
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277 finally: |
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278 self.cleanup() |
694 | 279 |
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|
280 def cleanup(self): |
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281 try: |
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282 self.dest.after() |
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283 finally: |
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284 self.source.after() |
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285 if self.revmapfilefd: |
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286 self.revmapfilefd.close() |
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288 def convert(ui, src, dest=None, revmapfile=None, **opts): |
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289 """Convert a foreign SCM repository to a Mercurial one. |
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290 |
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291 Accepted source formats: |
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292 - CVS |
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293 - Darcs |
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294 - git |
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295 - Subversion |
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296 |
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297 Accepted destination formats: |
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298 - Mercurial |
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299 |
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300 If no revision is given, all revisions will be converted. Otherwise, |
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301 convert will only import up to the named revision (given in a format |
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302 understood by the source). |
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303 |
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304 If no destination directory name is specified, it defaults to the |
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305 basename of the source with '-hg' appended. If the destination |
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306 repository doesn't exist, it will be created. |
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307 |
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308 If <revmapfile> isn't given, it will be put in a default location |
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309 (<dest>/.hg/shamap by default). The <revmapfile> is a simple text |
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310 file that maps each source commit ID to the destination ID for |
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311 that revision, like so: |
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312 <source ID> <destination ID> |
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313 |
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314 If the file doesn't exist, it's automatically created. It's updated |
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315 on each commit copied, so convert-repo can be interrupted and can |
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316 be run repeatedly to copy new commits. |
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317 |
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318 The [username mapping] file is a simple text file that maps each source |
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319 commit author to a destination commit author. It is handy for source SCMs |
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320 that use unix logins to identify authors (eg: CVS). One line per author |
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321 mapping and the line format is: |
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322 srcauthor=whatever string you want |
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323 |
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324 The filemap is a file that allows filtering and remapping of files |
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325 and directories. Comment lines start with '#'. Each line can |
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326 contain one of the following directives: |
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327 |
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328 include path/to/file |
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329 |
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330 exclude path/to/file |
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331 |
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332 rename from/file to/file |
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333 |
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334 The 'include' directive causes a file, or all files under a |
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335 directory, to be included in the destination repository. The |
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336 'exclude' directive causes files or directories to be omitted. |
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337 The 'rename' directive renames a file or directory. To rename |
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338 from a subdirectory into the root of the repository, use '.' as |
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339 the path to rename to. |
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340 """ |
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341 |
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342 util._encoding = 'UTF-8' |
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343 |
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344 if not dest: |
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345 dest = hg.defaultdest(src) + "-hg" |
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346 ui.status("assuming destination %s\n" % dest) |
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347 |
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348 # Try to be smart and initalize things when required |
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349 created = False |
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350 if os.path.isdir(dest): |
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351 if len(os.listdir(dest)) > 0: |
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352 try: |
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353 hg.repository(ui, dest) |
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354 ui.status("destination %s is a Mercurial repository\n" % dest) |
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355 except hg.RepoError: |
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356 raise util.Abort( |
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357 "destination directory %s is not empty.\n" |
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358 "Please specify an empty directory to be initialized\n" |
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359 "or an already initialized mercurial repository" |
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360 % dest) |
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361 else: |
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362 ui.status("initializing destination %s repository\n" % dest) |
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363 hg.repository(ui, dest, create=True) |
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364 created = True |
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365 elif os.path.exists(dest): |
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366 raise util.Abort("destination %s exists and is not a directory" % dest) |
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367 else: |
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368 ui.status("initializing destination %s repository\n" % dest) |
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369 hg.repository(ui, dest, create=True) |
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370 created = True |
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371 |
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372 destc = convertsink(ui, dest) |
316 | 373 |
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374 try: |
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375 srcc = convertsource(ui, src, rev=opts.get('rev')) |
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376 except Exception: |
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377 if created: |
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378 shutil.rmtree(dest, True) |
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379 raise |
316 | 380 |
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381 if not revmapfile: |
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382 try: |
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383 revmapfile = destc.revmapfile() |
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384 except: |
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385 revmapfile = os.path.join(destc, "map") |
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386 |
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387 c = converter(ui, srcc, destc, revmapfile, opts) |
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388 c.convert() |
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389 |
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390 |
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391 cmdtable = { |
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392 "convert": |
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393 (convert, |
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394 [('A', 'authors', '', 'username mapping filename'), |
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395 ('', 'filemap', '', 'remap file names using contents of file'), |
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396 ('r', 'rev', '', 'import up to target revision REV'), |
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397 ('', 'datesort', None, 'try to sort changesets by date')], |
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398 'hg convert [OPTION]... SOURCE [DEST [MAPFILE]]'), |
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399 "debugsvnlog": |
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400 (debugsvnlog, |
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401 [], |
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402 'hg debugsvnlog'), |
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Edouard Gomez <ed.gomez@free.fr>
parents:
4512
diff
changeset
|
403 } |
5100
39b6eaee6fd7
convert: replace fork with subprocess call.
Patrick Mezard <pmezard@gmail.com>
parents:
5076
diff
changeset
|
404 |