Mercurial > hg > mercurial-crew-with-dirclash
annotate contrib/convert-repo @ 3998:315d47991fd4
symlinks: check whether a filesystem supports symlinks
author | Matt Mackall <mpm@selenic.com> |
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date | Fri, 29 Dec 2006 20:04:31 -0600 |
parents | 2b87d3c5ab8e |
children | 67982d3ee76c |
rev | line source |
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316 | 1 #!/usr/bin/env python |
2 # | |
3 # This is a generalized framework for converting between SCM | |
4 # repository formats. | |
5 # | |
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6 # To use, run: |
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7 # |
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8 # convert-repo <source> [<dest> [<mapfile>]] |
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9 # |
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10 # Currently accepted source formats: git, cvs |
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11 # Currently accepted destination formats: hg |
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12 # |
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13 # If destination isn't given, a new Mercurial repo named <src>-hg will |
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14 # be created. If <mapfile> isn't given, it will be put in a default |
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15 # location (<dest>/.hg/shamap by default) |
316 | 16 # |
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17 # The <mapfile> is a simple text file that maps each source commit ID to |
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18 # the destination ID for that revision, like so: |
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19 # |
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20 # <source ID> <destination ID> |
316 | 21 # |
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22 # If the file doesn't exist, it's automatically created. It's updated |
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23 # on each commit copied, so convert-repo can be interrupted and can |
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24 # be run repeatedly to copy new commits. |
316 | 25 |
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26 import sys, os, zlib, sha, time, re, locale |
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27 os.environ["HGENCODING"] = "utf-8" |
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28 from mercurial import hg, ui, util, fancyopts |
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29 |
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30 class Abort(Exception): pass |
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31 class NoRepo(Exception): pass |
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32 |
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33 class commit: |
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34 def __init__(self, **parts): |
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35 for x in "author date desc parents".split(): |
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36 if not x in parts: |
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37 abort("commit missing field %s\n" % x) |
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38 self.__dict__.update(parts) |
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39 |
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40 quiet = 0 |
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41 def status(msg): |
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42 if not quiet: sys.stdout.write(str(msg)) |
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43 |
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44 def warn(msg): |
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45 sys.stderr.write(str(msg)) |
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46 |
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47 def abort(msg): |
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48 raise Abort(msg) |
316 | 49 |
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50 def recode(s): |
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51 try: |
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52 return s.decode("utf-8").encode("utf-8") |
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53 except: |
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54 try: |
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55 return s.decode("latin-1").encode("utf-8") |
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56 except: |
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57 return s.decode("utf-8", "replace").encode("utf-8") |
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58 |
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59 # CVS conversion code inspired by hg-cvs-import and git-cvsimport |
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60 class convert_cvs: |
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61 def __init__(self, path): |
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62 self.path = path |
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63 cvs = os.path.join(path, "CVS") |
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64 if not os.path.exists(cvs): |
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65 raise NoRepo("couldn't open CVS repo %s" % path) |
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66 |
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67 self.changeset = {} |
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68 self.files = {} |
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69 self.tags = {} |
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70 self.lastbranch = {} |
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71 self.parent = {} |
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72 self.socket = None |
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73 self.cvsroot = file(os.path.join(cvs, "Root")).read()[:-1] |
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74 self.cvsrepo = file(os.path.join(cvs, "Repository")).read()[:-1] |
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75 self.encoding = locale.getpreferredencoding() |
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76 self._parse() |
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77 self._connect() |
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78 |
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79 def _parse(self): |
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80 if self.changeset: |
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81 return |
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82 |
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83 d = os.getcwd() |
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84 try: |
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85 os.chdir(self.path) |
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86 id = None |
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87 state = 0 |
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88 for l in os.popen("cvsps -A"): |
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89 if state == 0: # header |
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90 if l.startswith("PatchSet"): |
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91 id = l[9:-2] |
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92 elif l.startswith("Date"): |
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93 date = util.parsedate(l[6:-1], ["%Y/%m/%d %H:%M:%S"]) |
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94 date = util.datestr(date) |
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95 elif l.startswith("Branch"): |
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96 branch = l[8:-1] |
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97 self.parent[id] = self.lastbranch.get(branch,'bad') |
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98 self.lastbranch[branch] = id |
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99 elif l.startswith("Ancestor branch"): |
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100 ancestor = l[17:-1] |
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101 self.parent[id] = self.lastbranch[ancestor] |
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102 elif l.startswith("Author"): |
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103 author = self.recode(l[8:-1]) |
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104 elif l.startswith("Tag: "): |
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105 t = l[5:-1] |
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106 if t != "(none) ": |
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107 self.tags[t] = id |
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108 elif l.startswith("Log:"): |
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109 state = 1 |
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110 log = "" |
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111 elif state == 1: # log |
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112 if l == "Members: \n": |
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113 files = {} |
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114 log = self.recode(log[:-1]) |
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115 if log.isspace(): |
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116 log = "*** empty log message ***\n" |
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117 state = 2 |
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118 else: |
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119 log += l |
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120 elif state == 2: |
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121 if l == "\n": # |
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122 state = 0 |
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123 p = [self.parent[id]] |
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124 if id == "1": |
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125 p = [] |
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126 c = commit(author=author, date=date, parents=p, |
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127 desc=log, branch=branch) |
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128 self.changeset[id] = c |
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129 self.files[id] = files |
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130 else: |
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131 file,rev = l[1:-2].rsplit(':',1) |
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132 rev = rev.split("->")[1] |
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133 files[file] = rev |
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134 |
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135 self.heads = self.lastbranch.values() |
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136 finally: |
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137 os.chdir(d) |
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138 |
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139 def _connect(self): |
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140 root = self.cvsroot |
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141 local = False |
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142 user, host = None, None |
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143 cmd = ['cvs', 'server'] |
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144 |
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145 status("connecting to %s\n" % root) |
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146 |
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147 # only non-pserver for now |
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148 if root.startswith(":pserver"): |
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149 abort("can't handle pserver mode yet: %s\n" % root) |
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150 |
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151 if root.startswith(":local:"): |
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152 local = True |
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153 root = root[7:] |
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154 else: |
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155 # :ext:user@host/home/user/path/to/cvsroot |
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156 if root.startswith(":ext:"): |
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157 root = root[5:] |
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158 m = re.match(r'(?:([^@:/]+)@)?([^:/]+):?(.*)', root) |
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159 if not m: |
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160 local = True |
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161 else: |
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162 local = False |
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163 user, host, root = m.group(1), m.group(2), m.group(3) |
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164 |
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165 if not local: |
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166 rsh = os.environ.get("CVS_RSH" or "rsh") |
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167 if user: |
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168 cmd = [rsh, '-l', user, host] + cmd |
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169 else: |
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170 cmd = [rsh, host] + cmd |
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171 |
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172 self.writep, self.readp = os.popen2(cmd) |
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173 self.realroot = root |
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174 |
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175 self.writep.write("Root %s\n" % root) |
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176 self.writep.write("Valid-responses ok error Valid-requests Mode" |
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177 " M Mbinary E Checked-in Created Updated" |
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178 " Merged Removed\n") |
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179 self.writep.write("valid-requests\n") |
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180 self.writep.flush() |
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181 r = self.readp.readline() |
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182 if not r.startswith("Valid-requests"): |
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183 abort("server sucks\n") |
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184 if "UseUnchanged" in r: |
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185 self.writep.write("UseUnchanged\n") |
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186 self.writep.flush() |
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187 r = self.readp.readline() |
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188 |
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189 def getheads(self): |
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190 return self.heads |
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191 |
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192 def _getfile(self, name, rev): |
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193 if rev.endswith("(DEAD)"): |
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194 raise IOError |
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195 |
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196 args = ("-N -P -kk -r %s --" % rev).split() |
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197 args.append(os.path.join(self.cvsrepo, name)) |
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198 for x in args: |
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199 self.writep.write("Argument %s\n" % x) |
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200 self.writep.write("Directory .\n%s\nco\n" % self.realroot) |
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201 self.writep.flush() |
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202 |
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203 data = "" |
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204 while 1: |
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205 line = self.readp.readline() |
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206 if line.startswith("Created ") or line.startswith("Updated "): |
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207 self.readp.readline() # path |
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208 self.readp.readline() # entries |
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209 mode = self.readp.readline()[:-1] |
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210 count = int(self.readp.readline()[:-1]) |
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211 data = self.readp.read(count) |
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212 elif line.startswith(" "): |
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213 data += line[1:] |
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214 elif line.startswith("M "): |
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215 pass |
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216 elif line.startswith("Mbinary "): |
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217 count = int(self.readp.readline()[:-1]) |
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218 data = self.readp.read(count) |
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219 else: |
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220 if line == "ok\n": |
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221 return (data, "x" in mode) |
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222 elif line.startswith("E "): |
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223 warn("cvs server: %s\n" % line[2:]) |
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224 elif line.startswith("Remove"): |
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225 l = self.readp.readline() |
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226 l = self.readp.readline() |
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227 if l != "ok\n": |
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228 abort("unknown CVS response: %s\n" % l) |
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229 else: |
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230 abort("unknown CVS response: %s\n" % line) |
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231 |
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232 def getfile(self, file, rev): |
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233 data, mode = self._getfile(file, rev) |
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234 self.modecache[(file, rev)] = mode |
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235 return data |
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236 |
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237 def getmode(self, file, rev): |
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238 return self.modecache[(file, rev)] |
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239 |
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240 def getchanges(self, rev): |
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241 self.modecache = {} |
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242 files = self.files[rev] |
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243 cl = files.items() |
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244 cl.sort() |
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245 return cl |
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246 |
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247 def recode(self, text): |
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248 return text.decode(self.encoding, "replace").encode("utf-8") |
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249 |
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250 def getcommit(self, rev): |
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251 return self.changeset[rev] |
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252 |
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253 def gettags(self): |
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254 return self.tags |
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255 |
316 | 256 class convert_git: |
257 def __init__(self, path): | |
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258 if os.path.isdir(path + "/.git"): |
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259 path += "/.git" |
316 | 260 self.path = path |
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261 if not os.path.exists(path + "/HEAD"): |
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262 raise NoRepo("couldn't open GIT repo %s" % path) |
316 | 263 |
264 def getheads(self): | |
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265 fh = os.popen("GIT_DIR=%s git-rev-parse --verify HEAD" % self.path) |
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266 return [fh.read()[:-1]] |
316 | 267 |
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268 def catfile(self, rev, type): |
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269 if rev == "0" * 40: raise IOError() |
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270 fh = os.popen("GIT_DIR=%s git-cat-file %s %s 2>/dev/null" % (self.path, type, rev)) |
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271 return fh.read() |
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272 |
316 | 273 def getfile(self, name, rev): |
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274 return self.catfile(rev, "blob") |
316 | 275 |
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276 def getmode(self, name, rev): |
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277 return self.modecache[(name, rev)] |
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278 |
316 | 279 def getchanges(self, version): |
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280 self.modecache = {} |
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281 fh = os.popen("GIT_DIR=%s git-diff-tree --root -m -r %s" % (self.path, version)) |
316 | 282 changes = [] |
283 for l in fh: | |
284 if "\t" not in l: continue | |
285 m, f = l[:-1].split("\t") | |
286 m = m.split() | |
287 h = m[3] | |
288 p = (m[1] == "100755") | |
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289 self.modecache[(f, h)] = p |
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290 changes.append((f, h)) |
316 | 291 return changes |
292 | |
293 def getcommit(self, version): | |
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294 c = self.catfile(version, "commit") # read the commit hash |
316 | 295 end = c.find("\n\n") |
296 message = c[end+2:] | |
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297 message = recode(message) |
316 | 298 l = c[:end].splitlines() |
299 manifest = l[0].split()[1] | |
300 parents = [] | |
301 for e in l[1:]: | |
302 n,v = e.split(" ", 1) | |
303 if n == "author": | |
304 p = v.split() | |
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305 tm, tz = p[-2:] |
316 | 306 author = " ".join(p[:-2]) |
307 if author[0] == "<": author = author[1:-1] | |
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308 author = recode(author) |
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309 if n == "committer": |
431 | 310 p = v.split() |
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311 tm, tz = p[-2:] |
431 | 312 committer = " ".join(p[:-2]) |
313 if committer[0] == "<": committer = committer[1:-1] | |
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314 committer = recode(committer) |
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315 message += "\ncommitter: %s\n" % committer |
316 | 316 if n == "parent": parents.append(v) |
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317 |
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318 tzs, tzh, tzm = tz[-5:-4] + "1", tz[-4:-2], tz[-2:] |
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319 tz = -int(tzs) * (int(tzh) * 3600 + int(tzm)) |
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320 date = tm + " " + str(tz) |
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321 |
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322 c = commit(parents=parents, date=date, author=author, desc=message) |
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323 return c |
316 | 324 |
694 | 325 def gettags(self): |
326 tags = {} | |
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327 for f in os.listdir(self.path + "/refs/tags"): |
694 | 328 try: |
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329 h = file(self.path + "/refs/tags/" + f).read().strip() |
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330 c = self.catfile(h, "tag") # read the commit hash |
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331 h = c.splitlines()[0].split()[1] |
1237 | 332 tags[f] = h |
694 | 333 except: |
334 pass | |
335 return tags | |
336 | |
316 | 337 class convert_mercurial: |
338 def __init__(self, path): | |
339 self.path = path | |
340 u = ui.ui() | |
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341 try: |
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342 self.repo = hg.repository(u, path) |
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343 except: |
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344 raise NoRepo("could open hg repo %s" % path) |
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345 |
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346 def mapfile(self): |
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347 return os.path.join(self.path, ".hg", "shamap") |
316 | 348 |
349 def getheads(self): | |
350 h = self.repo.changelog.heads() | |
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351 return [ hg.hex(x) for x in h ] |
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352 |
316 | 353 def putfile(self, f, e, data): |
354 self.repo.wfile(f, "w").write(data) | |
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355 if self.repo.dirstate.state(f) == '?': |
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356 self.repo.dirstate.update([f], "a") |
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357 |
450 | 358 util.set_exec(self.repo.wjoin(f), e) |
316 | 359 |
360 def delfile(self, f): | |
361 try: | |
362 os.unlink(self.repo.wjoin(f)) | |
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363 #self.repo.remove([f]) |
316 | 364 except: |
365 pass | |
366 | |
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367 def putcommit(self, files, parents, commit): |
431 | 368 seen = {} |
369 pl = [] | |
370 for p in parents: | |
371 if p not in seen: | |
372 pl.append(p) | |
373 seen[p] = 1 | |
374 parents = pl | |
316 | 375 |
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376 if len(parents) < 2: parents.append("0" * 40) |
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377 if len(parents) < 2: parents.append("0" * 40) |
431 | 378 p2 = parents.pop(0) |
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379 |
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380 text = commit.desc |
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381 extra = {} |
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382 try: |
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383 extra["branch"] = commit.branch |
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384 except AttributeError: |
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385 pass |
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386 |
431 | 387 while parents: |
388 p1 = p2 | |
389 p2 = parents.pop(0) | |
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390 a = self.repo.rawcommit(files, text, commit.author, commit.date, |
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391 hg.bin(p1), hg.bin(p2), extra=extra) |
431 | 392 text = "(octopus merge fixup)\n" |
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393 p2 = hg.hex(self.repo.changelog.tip()) |
431 | 394 |
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395 return p2 |
316 | 396 |
694 | 397 def puttags(self, tags): |
398 try: | |
399 old = self.repo.wfile(".hgtags").read() | |
400 oldlines = old.splitlines(1) | |
401 oldlines.sort() | |
402 except: | |
403 oldlines = [] | |
404 | |
405 k = tags.keys() | |
406 k.sort() | |
407 newlines = [] | |
408 for tag in k: | |
409 newlines.append("%s %s\n" % (tags[tag], tag)) | |
410 | |
411 newlines.sort() | |
412 | |
413 if newlines != oldlines: | |
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414 status("updating tags\n") |
694 | 415 f = self.repo.wfile(".hgtags", "w") |
416 f.write("".join(newlines)) | |
417 f.close() | |
418 if not oldlines: self.repo.add([".hgtags"]) | |
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419 date = "%s 0" % int(time.mktime(time.gmtime())) |
694 | 420 self.repo.rawcommit([".hgtags"], "update tags", "convert-repo", |
421 date, self.repo.changelog.tip(), hg.nullid) | |
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422 return hg.hex(self.repo.changelog.tip()) |
694 | 423 |
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424 converters = [convert_cvs, convert_git, convert_mercurial] |
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425 |
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426 def converter(path): |
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427 if not os.path.isdir(path): |
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428 abort("%s: not a directory\n" % path) |
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429 for c in converters: |
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430 try: |
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431 return c(path) |
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432 except NoRepo: |
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433 pass |
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434 abort("%s: unknown repository type\n" % path) |
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435 |
316 | 436 class convert: |
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437 def __init__(self, source, dest, mapfile, opts): |
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438 |
316 | 439 self.source = source |
440 self.dest = dest | |
441 self.mapfile = mapfile | |
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442 self.opts = opts |
316 | 443 self.commitcache = {} |
444 | |
445 self.map = {} | |
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446 try: |
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447 for l in file(self.mapfile): |
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448 sv, dv = l[:-1].split() |
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449 self.map[sv] = dv |
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450 except IOError: |
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451 pass |
316 | 452 |
453 def walktree(self, heads): | |
454 visit = heads | |
455 known = {} | |
456 parents = {} | |
457 while visit: | |
458 n = visit.pop(0) | |
459 if n in known or n in self.map: continue | |
460 known[n] = 1 | |
461 self.commitcache[n] = self.source.getcommit(n) | |
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462 cp = self.commitcache[n].parents |
316 | 463 for p in cp: |
464 parents.setdefault(n, []).append(p) | |
465 visit.append(p) | |
466 | |
467 return parents | |
468 | |
469 def toposort(self, parents): | |
470 visit = parents.keys() | |
471 seen = {} | |
472 children = {} | |
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473 |
316 | 474 while visit: |
475 n = visit.pop(0) | |
476 if n in seen: continue | |
477 seen[n] = 1 | |
478 pc = 0 | |
479 if n in parents: | |
480 for p in parents[n]: | |
481 if p not in self.map: pc += 1 | |
482 visit.append(p) | |
483 children.setdefault(p, []).append(n) | |
484 if not pc: root = n | |
485 | |
486 s = [] | |
487 removed = {} | |
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488 visit = children.keys() |
316 | 489 while visit: |
490 n = visit.pop(0) | |
491 if n in removed: continue | |
492 dep = 0 | |
493 if n in parents: | |
494 for p in parents[n]: | |
495 if p in self.map: continue | |
496 if p not in removed: | |
497 # we're still dependent | |
498 visit.append(n) | |
499 dep = 1 | |
500 break | |
501 | |
502 if not dep: | |
503 # all n's parents are in the list | |
504 removed[n] = 1 | |
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505 if n not in self.map: |
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506 s.append(n) |
316 | 507 if n in children: |
508 for c in children[n]: | |
509 visit.insert(0, c) | |
510 | |
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511 if opts.get('datesort'): |
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512 depth = {} |
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513 for n in s: |
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514 depth[n] = 0 |
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515 pl = [p for p in self.commitcache[n].parents if p not in self.map] |
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516 if pl: |
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517 depth[n] = max([depth[p] for p in pl]) + 1 |
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518 |
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519 s = [(depth[n], self.commitcache[n].date, n) for n in s] |
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520 s.sort() |
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521 s = [e[2] for e in s] |
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522 |
316 | 523 return s |
524 | |
525 def copy(self, rev): | |
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526 c = self.commitcache[rev] |
316 | 527 files = self.source.getchanges(rev) |
528 | |
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529 for f,v in files: |
316 | 530 try: |
531 data = self.source.getfile(f, v) | |
532 except IOError, inst: | |
533 self.dest.delfile(f) | |
534 else: | |
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535 e = self.source.getmode(f, v) |
316 | 536 self.dest.putfile(f, e, data) |
537 | |
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538 r = [self.map[v] for v in c.parents] |
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539 f = [f for f,v in files] |
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540 self.map[rev] = self.dest.putcommit(f, r, c) |
316 | 541 file(self.mapfile, "a").write("%s %s\n" % (rev, self.map[rev])) |
542 | |
543 def convert(self): | |
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544 status("scanning source...\n") |
316 | 545 heads = self.source.getheads() |
546 parents = self.walktree(heads) | |
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547 status("sorting...\n") |
316 | 548 t = self.toposort(parents) |
549 num = len(t) | |
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550 c = None |
316 | 551 |
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552 status("converting...\n") |
316 | 553 for c in t: |
554 num -= 1 | |
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555 desc = self.commitcache[c].desc |
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556 if "\n" in desc: |
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557 desc = desc.splitlines()[0] |
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558 status("%d %s\n" % (num, desc)) |
316 | 559 self.copy(c) |
560 | |
694 | 561 tags = self.source.gettags() |
562 ctags = {} | |
563 for k in tags: | |
564 v = tags[k] | |
565 if v in self.map: | |
566 ctags[k] = self.map[v] | |
567 | |
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568 if c and ctags: |
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569 nrev = self.dest.puttags(ctags) |
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570 # write another hash correspondence to override the previous |
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571 # one so we don't end up with extra tag heads |
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572 if nrev: |
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573 file(self.mapfile, "a").write("%s %s\n" % (c, nrev)) |
694 | 574 |
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575 def command(src, dest=None, mapfile=None, **opts): |
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576 srcc = converter(src) |
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577 if not hasattr(srcc, "getcommit"): |
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578 abort("%s: can't read from this repo type\n" % src) |
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579 |
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580 if not dest: |
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581 dest = src + "-hg" |
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582 status("assuming destination %s\n" % dest) |
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583 if not os.path.isdir(dest): |
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584 status("creating repository %s\n" % dest) |
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585 os.system("hg init " + dest) |
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586 destc = converter(dest) |
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587 if not hasattr(destc, "putcommit"): |
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588 abort("%s: can't write to this repo type\n" % src) |
316 | 589 |
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590 if not mapfile: |
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591 try: |
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592 mapfile = destc.mapfile() |
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593 except: |
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594 mapfile = os.path.join(destc, "map") |
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595 |
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596 c = convert(srcc, destc, mapfile, opts) |
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597 c.convert() |
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598 |
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599 options = [('q', 'quiet', None, 'suppress output'), |
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600 ('', 'datesort', None, 'try to sort changesets by date')] |
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601 opts = {} |
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602 args = fancyopts.fancyopts(sys.argv[1:], options, opts) |
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603 |
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604 if opts['quiet']: |
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605 quiet = 1 |
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606 |
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607 try: |
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608 command(*args, **opts) |
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609 except Abort, inst: |
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610 warn(inst) |
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611 except KeyboardInterrupt: |
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612 status("interrupted\n") |