Mercurial > hg
annotate hgext/convert/__init__.py @ 5374:e710874247d1
convert: allow the converter_source to say "skip this revision"
If getchanges returns a string, it's assumed to be the id of an
already converted revision. We map the current revision to the same
revision this converted revision was mapped to.
To allow skipping a root revision, getchanges can return the special
string 'hg-convert-skipped-revision' (a.k.a. common.SKIPREV), which
hopefully won't clash with any real id.
The converter_source is responsible for rewriting the parents of the
commit objects to make sure the revision graph makes sense.
author | Alexis S. L. Carvalho <alexis@cecm.usp.br> |
---|---|
date | Thu, 04 Oct 2007 23:21:37 -0300 |
parents | 6aba1835a7b3 |
children | dae323e453aa |
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, shlex, 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, filemapper, 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 |
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54 self.mapfile = filemapper |
316 | 55 |
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56 self.maporder = [] |
316 | 57 self.map = {} |
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58 try: |
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59 origrevmapfile = open(self.revmapfile, 'r') |
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60 for l in origrevmapfile: |
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61 sv, dv = l[:-1].split() |
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62 if sv not in self.map: |
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63 self.maporder.append(sv) |
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64 self.map[sv] = dv |
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65 origrevmapfile.close() |
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66 except IOError: |
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67 pass |
316 | 68 |
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69 # Read first the dst author map if any |
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70 authorfile = self.dest.authorfile() |
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71 if authorfile and os.path.exists(authorfile): |
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72 self.readauthormap(authorfile) |
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73 # Extend/Override with new author map if necessary |
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74 if opts.get('authors'): |
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75 self.readauthormap(opts.get('authors')) |
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76 self.authorfile = self.dest.authorfile() |
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77 |
316 | 78 def walktree(self, heads): |
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79 '''Return a mapping that identifies the uncommitted parents of every |
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80 uncommitted changeset.''' |
316 | 81 visit = heads |
82 known = {} | |
83 parents = {} | |
84 while visit: | |
85 n = visit.pop(0) | |
86 if n in known or n in self.map: continue | |
87 known[n] = 1 | |
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88 commit = self.cachecommit(n) |
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89 parents[n] = [] |
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90 for p in commit.parents: |
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91 parents[n].append(p) |
316 | 92 visit.append(p) |
93 | |
94 return parents | |
95 | |
96 def toposort(self, parents): | |
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97 '''Return an ordering such that every uncommitted changeset is |
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98 preceeded by all its uncommitted ancestors.''' |
316 | 99 visit = parents.keys() |
100 seen = {} | |
101 children = {} | |
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102 |
316 | 103 while visit: |
104 n = visit.pop(0) | |
105 if n in seen: continue | |
106 seen[n] = 1 | |
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107 # Ensure that nodes without parents are present in the 'children' |
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108 # mapping. |
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109 children.setdefault(n, []) |
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110 for p in parents[n]: |
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111 if not p in self.map: |
316 | 112 visit.append(p) |
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113 children.setdefault(p, []).append(n) |
316 | 114 |
115 s = [] | |
116 removed = {} | |
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117 visit = children.keys() |
316 | 118 while visit: |
119 n = visit.pop(0) | |
120 if n in removed: continue | |
121 dep = 0 | |
122 if n in parents: | |
123 for p in parents[n]: | |
124 if p in self.map: continue | |
125 if p not in removed: | |
126 # we're still dependent | |
127 visit.append(n) | |
128 dep = 1 | |
129 break | |
130 | |
131 if not dep: | |
132 # all n's parents are in the list | |
133 removed[n] = 1 | |
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134 if n not in self.map: |
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135 s.append(n) |
316 | 136 if n in children: |
137 for c in children[n]: | |
138 visit.insert(0, c) | |
139 | |
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140 if self.opts.get('datesort'): |
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141 depth = {} |
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142 for n in s: |
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143 depth[n] = 0 |
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144 pl = [p for p in self.commitcache[n].parents |
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145 if p not in self.map] |
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146 if pl: |
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147 depth[n] = max([depth[p] for p in pl]) + 1 |
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148 |
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149 s = [(depth[n], self.commitcache[n].date, n) for n in s] |
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150 s.sort() |
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151 s = [e[2] for e in s] |
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152 |
316 | 153 return s |
154 | |
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155 def mapentry(self, src, dst): |
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156 if self.revmapfilefd is None: |
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157 try: |
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158 self.revmapfilefd = open(self.revmapfile, "a") |
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159 except IOError, (errno, strerror): |
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160 raise util.Abort("Could not open map file %s: %s, %s\n" % (self.revmapfile, errno, strerror)) |
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161 self.map[src] = dst |
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162 self.revmapfilefd.write("%s %s\n" % (src, dst)) |
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163 self.revmapfilefd.flush() |
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164 |
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165 def writeauthormap(self): |
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166 authorfile = self.authorfile |
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167 if authorfile: |
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168 self.ui.status('Writing author map file %s\n' % authorfile) |
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169 ofile = open(authorfile, 'w+') |
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170 for author in self.authors: |
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171 ofile.write("%s=%s\n" % (author, self.authors[author])) |
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172 ofile.close() |
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173 |
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174 def readauthormap(self, authorfile): |
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175 afile = open(authorfile, 'r') |
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176 for line in afile: |
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177 try: |
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178 srcauthor = line.split('=')[0].strip() |
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179 dstauthor = line.split('=')[1].strip() |
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180 if srcauthor in self.authors and dstauthor != self.authors[srcauthor]: |
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181 self.ui.status( |
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182 'Overriding mapping for author %s, was %s, will be %s\n' |
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183 % (srcauthor, self.authors[srcauthor], dstauthor)) |
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184 else: |
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185 self.ui.debug('Mapping author %s to %s\n' |
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186 % (srcauthor, dstauthor)) |
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187 self.authors[srcauthor] = dstauthor |
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188 except IndexError: |
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189 self.ui.warn( |
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190 'Ignoring bad line in author file map %s: %s\n' |
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191 % (authorfile, line)) |
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192 afile.close() |
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193 |
5203
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194 def cachecommit(self, rev): |
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195 commit = self.source.getcommit(rev) |
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196 commit.author = self.authors.get(commit.author, commit.author) |
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197 self.commitcache[rev] = commit |
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198 return commit |
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199 |
316 | 200 def copy(self, rev): |
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201 commit = self.commitcache[rev] |
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202 do_copies = hasattr(self.dest, 'copyfile') |
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203 filenames = [] |
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204 |
5374
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205 changes = self.source.getchanges(rev) |
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206 if isinstance(changes, basestring): |
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207 if changes == SKIPREV: |
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208 dest = SKIPREV |
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209 else: |
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210 dest = self.map[changes] |
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211 self.mapentry(rev, dest) |
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212 return |
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213 files, copies = changes |
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214 parents = [self.map[r] for r in commit.parents] |
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215 if commit.parents: |
5204
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216 prev = commit.parents[0] |
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217 if prev not in self.commitcache: |
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218 self.cachecommit(prev) |
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219 pbranch = self.commitcache[prev].branch |
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220 else: |
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221 pbranch = None |
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222 self.dest.setbranch(commit.branch, pbranch, parents) |
5121
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223 for f, v in files: |
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224 newf = self.mapfile(f) |
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225 if not newf: |
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226 continue |
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227 filenames.append(newf) |
316 | 228 try: |
229 data = self.source.getfile(f, v) | |
230 except IOError, inst: | |
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231 self.dest.delfile(newf) |
316 | 232 else: |
3956
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convert-repo: add CVS exec bit support
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233 e = self.source.getmode(f, v) |
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234 self.dest.putfile(newf, e, data) |
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235 if do_copies: |
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236 if f in copies: |
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237 copyf = self.mapfile(copies[f]) |
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238 if copyf: |
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239 # Merely marks that a copy happened. |
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240 self.dest.copyfile(copyf, newf) |
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241 |
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242 if not filenames and self.mapfile.active(): |
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243 newnode = parents[0] |
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244 else: |
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245 newnode = self.dest.putcommit(filenames, parents, commit) |
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246 self.mapentry(rev, newnode) |
316 | 247 |
248 def convert(self): | |
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249 try: |
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250 self.source.before() |
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251 self.dest.before() |
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252 self.source.setrevmap(self.map, self.maporder) |
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253 self.ui.status("scanning source...\n") |
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254 heads = self.source.getheads() |
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255 parents = self.walktree(heads) |
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256 self.ui.status("sorting...\n") |
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257 t = self.toposort(parents) |
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258 num = len(t) |
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259 c = None |
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260 |
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261 self.ui.status("converting...\n") |
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262 for c in t: |
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263 num -= 1 |
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264 desc = self.commitcache[c].desc |
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265 if "\n" in desc: |
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266 desc = desc.splitlines()[0] |
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267 self.ui.status("%d %s\n" % (num, desc)) |
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268 self.copy(c) |
316 | 269 |
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270 tags = self.source.gettags() |
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271 ctags = {} |
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272 for k in tags: |
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273 v = tags[k] |
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274 if self.map.get(v, SKIPREV) != SKIPREV: |
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275 ctags[k] = self.map[v] |
316 | 276 |
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|
277 if c and ctags: |
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|
278 nrev = self.dest.puttags(ctags) |
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|
279 # write another hash correspondence to override the previous |
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|
280 # one so we don't end up with extra tag heads |
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281 if nrev: |
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282 self.mapentry(c, nrev) |
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283 |
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284 self.writeauthormap() |
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285 finally: |
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286 self.cleanup() |
694 | 287 |
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288 def cleanup(self): |
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289 try: |
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290 self.dest.after() |
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291 finally: |
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292 self.source.after() |
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293 if self.revmapfilefd: |
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294 self.revmapfilefd.close() |
694 | 295 |
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296 def rpairs(name): |
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297 e = len(name) |
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298 while e != -1: |
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299 yield name[:e], name[e+1:] |
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300 e = name.rfind('/', 0, e) |
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301 |
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302 class filemapper(object): |
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303 '''Map and filter filenames when importing. |
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304 A name can be mapped to itself, a new name, or None (omit from new |
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305 repository).''' |
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306 |
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307 def __init__(self, ui, path=None): |
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308 self.ui = ui |
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309 self.include = {} |
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310 self.exclude = {} |
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311 self.rename = {} |
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312 if path: |
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313 if self.parse(path): |
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314 raise util.Abort(_('errors in filemap')) |
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315 |
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316 def parse(self, path): |
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317 errs = 0 |
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318 def check(name, mapping, listname): |
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319 if name in mapping: |
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320 self.ui.warn(_('%s:%d: %r already in %s list\n') % |
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321 (lex.infile, lex.lineno, name, listname)) |
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322 return 1 |
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323 return 0 |
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324 lex = shlex.shlex(open(path), path, True) |
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325 lex.wordchars += '!@#$%^&*()-=+[]{}|;:,./<>?' |
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326 cmd = lex.get_token() |
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327 while cmd: |
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328 if cmd == 'include': |
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329 name = lex.get_token() |
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330 errs += check(name, self.exclude, 'exclude') |
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331 self.include[name] = name |
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332 elif cmd == 'exclude': |
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333 name = lex.get_token() |
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334 errs += check(name, self.include, 'include') |
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335 errs += check(name, self.rename, 'rename') |
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336 self.exclude[name] = name |
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337 elif cmd == 'rename': |
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338 src = lex.get_token() |
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339 dest = lex.get_token() |
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340 errs += check(src, self.exclude, 'exclude') |
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341 self.rename[src] = dest |
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342 elif cmd == 'source': |
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343 errs += self.parse(lex.get_token()) |
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344 else: |
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345 self.ui.warn(_('%s:%d: unknown directive %r\n') % |
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346 (lex.infile, lex.lineno, cmd)) |
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347 errs += 1 |
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348 cmd = lex.get_token() |
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349 return errs |
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350 |
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351 def lookup(self, name, mapping): |
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352 for pre, suf in rpairs(name): |
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353 try: |
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354 return mapping[pre], pre, suf |
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355 except KeyError, err: |
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356 pass |
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357 return '', name, '' |
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358 |
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359 def __call__(self, name): |
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360 if self.include: |
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361 inc = self.lookup(name, self.include)[0] |
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362 else: |
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363 inc = name |
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364 if self.exclude: |
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365 exc = self.lookup(name, self.exclude)[0] |
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366 else: |
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367 exc = '' |
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368 if not inc or exc: |
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369 return None |
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370 newpre, pre, suf = self.lookup(name, self.rename) |
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371 if newpre: |
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372 if newpre == '.': |
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373 return suf |
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374 if suf: |
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375 return newpre + '/' + suf |
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376 return newpre |
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377 return name |
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378 |
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379 def active(self): |
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380 return bool(self.include or self.exclude or self.rename) |
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381 |
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382 def convert(ui, src, dest=None, revmapfile=None, **opts): |
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383 """Convert a foreign SCM repository to a Mercurial one. |
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384 |
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385 Accepted source formats: |
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386 - CVS |
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387 - Darcs |
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388 - git |
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389 - Subversion |
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390 |
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391 Accepted destination formats: |
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392 - Mercurial |
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393 |
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394 If no revision is given, all revisions will be converted. Otherwise, |
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395 convert will only import up to the named revision (given in a format |
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396 understood by the source). |
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397 |
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398 If no destination directory name is specified, it defaults to the |
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399 basename of the source with '-hg' appended. If the destination |
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400 repository doesn't exist, it will be created. |
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401 |
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402 If <revmapfile> isn't given, it will be put in a default location |
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403 (<dest>/.hg/shamap by default). The <revmapfile> is a simple text |
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404 file that maps each source commit ID to the destination ID for |
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405 that revision, like so: |
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406 <source ID> <destination ID> |
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407 |
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408 If the file doesn't exist, it's automatically created. It's updated |
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409 on each commit copied, so convert-repo can be interrupted and can |
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410 be run repeatedly to copy new commits. |
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411 |
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412 The [username mapping] file is a simple text file that maps each source |
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413 commit author to a destination commit author. It is handy for source SCMs |
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414 that use unix logins to identify authors (eg: CVS). One line per author |
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415 mapping and the line format is: |
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416 srcauthor=whatever string you want |
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417 |
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418 The filemap is a file that allows filtering and remapping of files |
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419 and directories. Comment lines start with '#'. Each line can |
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420 contain one of the following directives: |
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421 |
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422 include path/to/file |
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423 |
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424 exclude path/to/file |
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425 |
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426 rename from/file to/file |
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427 |
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428 The 'include' directive causes a file, or all files under a |
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429 directory, to be included in the destination repository. The |
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430 'exclude' directive causes files or directories to be omitted. |
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431 The 'rename' directive renames a file or directory. To rename |
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432 from a subdirectory into the root of the repository, use '.' as |
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433 the path to rename to. |
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434 """ |
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435 |
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436 util._encoding = 'UTF-8' |
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437 |
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438 if not dest: |
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439 dest = hg.defaultdest(src) + "-hg" |
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440 ui.status("assuming destination %s\n" % dest) |
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441 |
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442 # Try to be smart and initalize things when required |
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443 created = False |
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444 if os.path.isdir(dest): |
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445 if len(os.listdir(dest)) > 0: |
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446 try: |
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447 hg.repository(ui, dest) |
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448 ui.status("destination %s is a Mercurial repository\n" % dest) |
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449 except hg.RepoError: |
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450 raise util.Abort( |
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451 "destination directory %s is not empty.\n" |
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452 "Please specify an empty directory to be initialized\n" |
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453 "or an already initialized mercurial repository" |
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454 % dest) |
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455 else: |
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456 ui.status("initializing destination %s repository\n" % dest) |
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457 hg.repository(ui, dest, create=True) |
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458 created = True |
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459 elif os.path.exists(dest): |
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460 raise util.Abort("destination %s exists and is not a directory" % dest) |
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461 else: |
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462 ui.status("initializing destination %s repository\n" % dest) |
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463 hg.repository(ui, dest, create=True) |
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464 created = True |
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465 |
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466 destc = convertsink(ui, dest) |
316 | 467 |
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468 try: |
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469 srcc = convertsource(ui, src, rev=opts.get('rev')) |
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470 except Exception: |
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471 if created: |
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472 shutil.rmtree(dest, True) |
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473 raise |
316 | 474 |
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475 if not revmapfile: |
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476 try: |
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477 revmapfile = destc.revmapfile() |
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478 except: |
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479 revmapfile = os.path.join(destc, "map") |
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480 |
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481 |
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482 c = converter(ui, srcc, destc, revmapfile, filemapper(ui, opts['filemap']), |
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483 opts) |
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484 c.convert() |
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485 |
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486 |
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487 cmdtable = { |
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488 "convert": |
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489 (convert, |
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490 [('A', 'authors', '', 'username mapping filename'), |
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491 ('', 'filemap', '', 'remap file names using contents of file'), |
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492 ('r', 'rev', '', 'import up to target revision REV'), |
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493 ('', 'datesort', None, 'try to sort changesets by date')], |
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494 'hg convert [OPTION]... SOURCE [DEST [MAPFILE]]'), |
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495 "debugsvnlog": |
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496 (debugsvnlog, |
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497 [], |
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498 'hg debugsvnlog'), |
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499 } |
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500 |