Mercurial > hg > mercurial-crew-with-dirclash
annotate hgext/convert/subversion.py @ 4948:6fd953d5faea
dirstate: break update into separate functions
author | Matt Mackall <mpm@selenic.com> |
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date | Sat, 21 Jul 2007 16:02:09 -0500 |
parents | 28b23b9073a8 |
children | 2642726b61b6 |
rev | line source |
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1 # Subversion 1.4/1.5 Python API backend |
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2 # |
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3 # Copyright(C) 2007 Daniel Holth et al |
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4 |
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5 import pprint |
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6 import locale |
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7 |
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8 from mercurial import util |
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9 |
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10 # Subversion stuff. Works best with very recent Python SVN bindings |
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11 # e.g. SVN 1.5 or backports. Thanks to the bzr folks for enhancing |
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12 # these bindings. |
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13 |
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14 from cStringIO import StringIO |
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15 |
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16 from common import NoRepo, commit, converter_source |
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17 |
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18 try: |
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19 from svn.core import SubversionException, Pool |
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20 import svn.core |
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21 import svn.ra |
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22 import svn.delta |
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23 import svn |
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24 import transport |
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25 except ImportError: |
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26 pass |
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27 |
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28 class CompatibilityException(Exception): pass |
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29 |
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30 # SVN conversion code stolen from bzr-svn and tailor |
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31 class convert_svn(converter_source): |
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32 def __init__(self, ui, url, rev=None): |
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33 super(convert_svn, self).__init__(ui, url, rev=rev) |
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34 |
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35 try: |
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36 SubversionException |
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37 except NameError: |
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38 msg = 'subversion python bindings could not be loaded\n' |
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39 ui.warn(msg) |
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40 raise NoRepo(msg) |
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41 |
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42 self.encoding = locale.getpreferredencoding() |
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43 self.lastrevs = {} |
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44 |
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45 latest = None |
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46 if rev: |
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47 try: |
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48 latest = int(rev) |
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49 except ValueError: |
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50 raise util.Abort('svn: revision %s is not an integer' % rev) |
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51 try: |
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52 # Support file://path@rev syntax. Useful e.g. to convert |
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53 # deleted branches. |
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54 url, latest = url.rsplit("@", 1) |
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55 latest = int(latest) |
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56 except ValueError, e: |
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57 pass |
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58 self.url = url |
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59 self.encoding = 'UTF-8' # Subversion is always nominal UTF-8 |
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60 try: |
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61 self.transport = transport.SvnRaTransport(url = url) |
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62 self.ra = self.transport.ra |
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63 self.ctx = svn.client.create_context() |
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64 self.base = svn.ra.get_repos_root(self.ra) |
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65 self.module = self.url[len(self.base):] |
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66 self.modulemap = {} # revision, module |
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67 self.commits = {} |
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68 self.files = {} |
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69 self.uuid = svn.ra.get_uuid(self.ra).decode(self.encoding) |
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70 except SubversionException, e: |
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71 raise NoRepo("couldn't open SVN repo %s" % url) |
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72 |
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73 try: |
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74 self.get_blacklist() |
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75 except IOError, e: |
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76 pass |
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77 |
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78 self.last_changed = self.latest(self.module, latest) |
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79 |
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80 self.head = self.revid(self.last_changed) |
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81 |
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82 def setrevmap(self, revmap): |
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83 lastrevs = {} |
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84 for revid in revmap.keys(): |
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85 uuid, module, revnum = self.revsplit(revid) |
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86 lastrevnum = lastrevs.setdefault(module, revnum) |
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87 if revnum > lastrevnum: |
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88 lastrevs[module] = revnum |
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89 self.lastrevs = lastrevs |
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90 |
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91 def getheads(self): |
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92 # detect standard /branches, /tags, /trunk layout |
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93 optrev = svn.core.svn_opt_revision_t() |
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94 optrev.kind = svn.core.svn_opt_revision_number |
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95 optrev.value.number = self.last_changed |
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96 rpath = self.url.strip('/') |
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97 paths = svn.client.ls(rpath, optrev, False, self.ctx) |
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98 if 'branches' in paths and 'trunk' in paths: |
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99 self.module += '/trunk' |
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100 lt = self.latest(self.module, self.last_changed) |
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101 self.head = self.revid(lt) |
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102 self.heads = [self.head] |
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103 branches = svn.client.ls(rpath + '/branches', optrev, False, self.ctx) |
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104 for branch in branches.keys(): |
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105 module = '/branches/' + branch |
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106 brevnum = self.latest(module, self.last_changed) |
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107 brev = self.revid(brevnum, module) |
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108 self.ui.note('found branch %s at %d\n' % (branch, brevnum)) |
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109 self.heads.append(brev) |
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110 else: |
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111 self.heads = [self.head] |
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112 return self.heads |
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113 |
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114 def getfile(self, file, rev): |
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115 data, mode = self._getfile(file, rev) |
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116 self.modecache[(file, rev)] = mode |
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117 return data |
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118 |
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119 def getmode(self, file, rev): |
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120 return self.modecache[(file, rev)] |
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121 |
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122 def getchanges(self, rev): |
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123 self.modecache = {} |
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124 files = self.files[rev] |
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125 cl = files |
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126 cl.sort() |
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127 # caller caches the result, so free it here to release memory |
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128 del self.files[rev] |
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129 return cl |
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130 |
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131 def getcommit(self, rev): |
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132 if rev not in self.commits: |
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133 uuid, module, revnum = self.revsplit(rev) |
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134 self.module = module |
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135 self.reparent(module) |
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136 stop = self.lastrevs.get(module, 0) |
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137 self._fetch_revisions(from_revnum=revnum, to_revnum=stop) |
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138 commit = self.commits[rev] |
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139 # caller caches the result, so free it here to release memory |
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140 del self.commits[rev] |
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141 return commit |
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142 |
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143 def gettags(self): |
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144 tags = {} |
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145 def parselogentry(*arg, **args): |
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146 orig_paths, revnum, author, date, message, pool = arg |
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147 for path in orig_paths: |
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148 if not path.startswith('/tags/'): |
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149 continue |
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150 ent = orig_paths[path] |
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151 source = ent.copyfrom_path |
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152 rev = ent.copyfrom_rev |
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153 tag = path.split('/', 2)[2] |
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154 tags[tag] = self.revid(rev, module=source) |
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155 |
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156 start = self.revnum(self.head) |
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157 try: |
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158 svn.ra.get_log(self.ra, ['/tags'], 0, start, 0, True, False, |
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159 parselogentry) |
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160 return tags |
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161 except SubversionException: |
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162 self.ui.note('no tags found at revision %d\n' % start) |
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163 return {} |
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164 |
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165 # -- helper functions -- |
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166 |
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167 def revid(self, revnum, module=None): |
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168 if not module: |
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169 module = self.module |
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170 return (u"svn:%s%s@%s" % (self.uuid, module, revnum)).decode(self.encoding) |
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171 |
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172 def revnum(self, rev): |
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173 return int(rev.split('@')[-1]) |
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174 |
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175 def revsplit(self, rev): |
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176 url, revnum = rev.encode(self.encoding).split('@', 1) |
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177 revnum = int(revnum) |
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178 parts = url.split('/', 1) |
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179 uuid = parts.pop(0)[4:] |
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180 mod = '' |
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181 if parts: |
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182 mod = '/' + parts[0] |
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183 return uuid, mod, revnum |
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184 |
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185 def latest(self, path, stop=0): |
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186 'find the latest revision affecting path, up to stop' |
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187 if not stop: |
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188 stop = svn.ra.get_latest_revnum(self.ra) |
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189 try: |
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190 self.reparent('') |
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191 dirent = svn.ra.stat(self.ra, path.strip('/'), stop) |
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192 self.reparent(self.module) |
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193 except SubversionException: |
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194 dirent = None |
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195 if not dirent: |
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196 raise util.Abort('%s not found up to revision %d' \ |
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197 % (path, stop)) |
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198 |
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199 return dirent.created_rev |
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200 |
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201 def get_blacklist(self): |
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202 """Avoid certain revision numbers. |
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203 It is not uncommon for two nearby revisions to cancel each other |
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204 out, e.g. 'I copied trunk into a subdirectory of itself instead |
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205 of making a branch'. The converted repository is significantly |
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206 smaller if we ignore such revisions.""" |
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207 self.blacklist = set() |
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208 blacklist = self.blacklist |
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209 for line in file("blacklist.txt", "r"): |
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210 if not line.startswith("#"): |
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211 try: |
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212 svn_rev = int(line.strip()) |
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213 blacklist.add(svn_rev) |
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214 except ValueError, e: |
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215 pass # not an integer or a comment |
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216 |
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217 def is_blacklisted(self, svn_rev): |
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218 return svn_rev in self.blacklist |
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219 |
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220 def reparent(self, module): |
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221 svn_url = self.base + module |
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222 self.ui.debug("reparent to %s\n" % svn_url.encode(self.encoding)) |
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223 svn.ra.reparent(self.ra, svn_url.encode(self.encoding)) |
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224 |
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225 def _fetch_revisions(self, from_revnum = 0, to_revnum = 347): |
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226 def get_entry_from_path(path, module=self.module): |
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227 # Given the repository url of this wc, say |
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228 # "http://server/plone/CMFPlone/branches/Plone-2_0-branch" |
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229 # extract the "entry" portion (a relative path) from what |
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230 # svn log --xml says, ie |
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231 # "/CMFPlone/branches/Plone-2_0-branch/tests/PloneTestCase.py" |
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232 # that is to say "tests/PloneTestCase.py" |
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233 |
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234 if path.startswith(module): |
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235 relative = path[len(module):] |
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236 if relative.startswith('/'): |
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237 return relative[1:] |
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238 else: |
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239 return relative |
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240 |
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241 # The path is outside our tracked tree... |
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242 self.ui.debug('Ignoring %r since it is not under %r\n' % (path, module)) |
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243 return None |
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244 |
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245 received = [] |
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246 # svn.ra.get_log requires no other calls to the ra until it completes, |
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247 # so we just collect the log entries and parse them afterwards |
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248 def receivelog(*arg, **args): |
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249 received.append(arg) |
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250 |
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251 self.child_cset = None |
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252 def parselogentry(*arg, **args): |
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253 orig_paths, revnum, author, date, message, pool = arg |
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254 |
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255 if self.is_blacklisted(revnum): |
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256 self.ui.note('skipping blacklisted revision %d\n' % revnum) |
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257 return |
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258 |
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259 self.ui.debug("parsing revision %d\n" % revnum) |
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260 |
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261 if orig_paths is None: |
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262 self.ui.debug('revision %d has no entries\n' % revnum) |
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263 return |
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264 |
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265 if revnum in self.modulemap: |
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266 new_module = self.modulemap[revnum] |
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267 if new_module != self.module: |
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268 self.module = new_module |
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269 self.reparent(self.module) |
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270 |
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271 copyfrom = {} # Map of entrypath, revision for finding source of deleted revisions. |
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272 copies = {} |
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273 entries = [] |
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274 rev = self.revid(revnum) |
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275 parents = [] |
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276 |
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277 # branch log might return entries for a parent we already have |
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278 if (rev in self.commits or |
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279 (revnum < self.lastrevs.get(self.module, 0))): |
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280 return |
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281 |
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282 try: |
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283 branch = self.module.split("/")[-1] |
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284 if branch == 'trunk': |
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285 branch = '' |
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286 except IndexError: |
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287 branch = None |
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288 |
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289 paths = orig_paths.keys() |
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290 paths.sort() |
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291 for path in paths: |
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292 # self.ui.write("path %s\n" % path) |
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293 if path == self.module: # Follow branching back in history |
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294 ent = orig_paths[path] |
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295 if ent: |
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296 if ent.copyfrom_path: |
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297 # ent.copyfrom_rev may not be the actual last revision |
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298 prev = self.latest(ent.copyfrom_path, ent.copyfrom_rev) |
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299 self.modulemap[prev] = ent.copyfrom_path |
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300 parents = [self.revid(prev, ent.copyfrom_path)] |
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301 self.ui.note('found parent of branch %s at %d: %s\n' % \ |
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302 (self.module, prev, ent.copyfrom_path)) |
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303 else: |
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304 self.ui.debug("No copyfrom path, don't know what to do.\n") |
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305 # Maybe it was added and there is no more history. |
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306 entrypath = get_entry_from_path(path, module=self.module) |
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307 # self.ui.write("entrypath %s\n" % entrypath) |
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308 if entrypath is None: |
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309 # Outside our area of interest |
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310 self.ui.debug("boring@%s: %s\n" % (revnum, path)) |
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311 continue |
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312 entry = entrypath.decode(self.encoding) |
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313 ent = orig_paths[path] |
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314 |
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315 kind = svn.ra.check_path(self.ra, entrypath, revnum) |
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316 if kind == svn.core.svn_node_file: |
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317 if ent.copyfrom_path: |
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318 copyfrom_path = get_entry_from_path(ent.copyfrom_path) |
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319 if copyfrom_path: |
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320 self.ui.debug("Copied to %s from %s@%s\n" % (entry, copyfrom_path, ent.copyfrom_rev)) |
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321 # It's probably important for hg that the source |
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322 # exists in the revision's parent, not just the |
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323 # ent.copyfrom_rev |
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324 fromkind = svn.ra.check_path(self.ra, copyfrom_path, ent.copyfrom_rev) |
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325 if fromkind != 0: |
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326 copies[self.recode(entry)] = self.recode(copyfrom_path) |
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327 entries.append(self.recode(entry)) |
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328 elif kind == 0: # gone, but had better be a deleted *file* |
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329 self.ui.debug("gone from %s\n" % ent.copyfrom_rev) |
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330 |
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331 # if a branch is created but entries are removed in the same |
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332 # changeset, get the right fromrev |
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333 if parents: |
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334 uuid, old_module, fromrev = self.revsplit(parents[0]) |
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335 else: |
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336 fromrev = revnum - 1 |
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337 # might always need to be revnum - 1 in these 3 lines? |
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338 old_module = self.modulemap.get(fromrev, self.module) |
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339 |
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340 basepath = old_module + "/" + get_entry_from_path(path, module=self.module) |
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341 entrypath = old_module + "/" + get_entry_from_path(path, module=self.module) |
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342 |
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343 def lookup_parts(p): |
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344 rc = None |
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345 parts = p.split("/") |
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346 for i in range(len(parts)): |
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347 part = "/".join(parts[:i]) |
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348 info = part, copyfrom.get(part, None) |
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349 if info[1] is not None: |
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350 self.ui.debug("Found parent directory %s\n" % info[1]) |
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351 rc = info |
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352 return rc |
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353 |
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354 self.ui.debug("base, entry %s %s\n" % (basepath, entrypath)) |
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355 |
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356 frompath, froment = lookup_parts(entrypath) or (None, revnum - 1) |
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357 |
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358 # need to remove fragment from lookup_parts and replace with copyfrom_path |
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359 if frompath is not None: |
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360 self.ui.debug("munge-o-matic\n") |
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361 self.ui.debug(entrypath + '\n') |
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362 self.ui.debug(entrypath[len(frompath):] + '\n') |
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363 entrypath = froment.copyfrom_path + entrypath[len(frompath):] |
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364 fromrev = froment.copyfrom_rev |
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365 self.ui.debug("Info: %s %s %s %s\n" % (frompath, froment, ent, entrypath)) |
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366 |
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367 fromkind = svn.ra.check_path(self.ra, entrypath, fromrev) |
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368 if fromkind == svn.core.svn_node_file: # a deleted file |
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369 entries.append(self.recode(entry)) |
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370 elif fromkind == svn.core.svn_node_dir: |
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371 # print "Deleted/moved non-file:", revnum, path, ent |
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372 # children = self._find_children(path, revnum - 1) |
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373 # print "find children %s@%d from %d action %s" % (path, revnum, ent.copyfrom_rev, ent.action) |
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374 # Sometimes this is tricky. For example: in |
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375 # The Subversion Repository revision 6940 a dir |
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376 # was copied and one of its files was deleted |
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377 # from the new location in the same commit. This |
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378 # code can't deal with that yet. |
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379 if ent.action == 'C': |
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380 children = self._find_children(path, fromrev) |
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381 else: |
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382 oroot = entrypath.strip('/') |
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383 nroot = path.strip('/') |
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384 children = self._find_children(oroot, fromrev) |
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385 children = [s.replace(oroot,nroot) for s in children] |
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386 # Mark all [files, not directories] as deleted. |
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387 for child in children: |
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388 # Can we move a child directory and its |
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389 # parent in the same commit? (probably can). Could |
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390 # cause problems if instead of revnum -1, |
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391 # we have to look in (copyfrom_path, revnum - 1) |
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392 entrypath = get_entry_from_path("/" + child, module=old_module) |
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393 if entrypath: |
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394 entry = self.recode(entrypath.decode(self.encoding)) |
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395 if entry in copies: |
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396 # deleted file within a copy |
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397 del copies[entry] |
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398 else: |
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399 entries.append(entry) |
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400 else: |
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401 self.ui.debug('unknown path in revision %d: %s\n' % \ |
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402 (revnum, path)) |
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403 elif kind == svn.core.svn_node_dir: |
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404 # Should probably synthesize normal file entries |
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405 # and handle as above to clean up copy/rename handling. |
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406 |
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407 # If the directory just had a prop change, |
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408 # then we shouldn't need to look for its children. |
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409 # Also this could create duplicate entries. Not sure |
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410 # whether this will matter. Maybe should make entries a set. |
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411 # print "Changed directory", revnum, path, ent.action, ent.copyfrom_path, ent.copyfrom_rev |
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412 # This will fail if a directory was copied |
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413 # from another branch and then some of its files |
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414 # were deleted in the same transaction. |
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415 children = self._find_children(path, revnum) |
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416 children.sort() |
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417 for child in children: |
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418 # Can we move a child directory and its |
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419 # parent in the same commit? (probably can). Could |
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420 # cause problems if instead of revnum -1, |
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421 # we have to look in (copyfrom_path, revnum - 1) |
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422 entrypath = get_entry_from_path("/" + child, module=self.module) |
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423 # print child, self.module, entrypath |
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424 if entrypath: |
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425 # Need to filter out directories here... |
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426 kind = svn.ra.check_path(self.ra, entrypath, revnum) |
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427 if kind != svn.core.svn_node_dir: |
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428 entries.append(self.recode(entrypath)) |
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429 |
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430 # Copies here (must copy all from source) |
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431 # Probably not a real problem for us if |
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432 # source does not exist |
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433 |
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434 # Can do this with the copy command "hg copy" |
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435 # if ent.copyfrom_path: |
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436 # copyfrom_entry = get_entry_from_path(ent.copyfrom_path.decode(self.encoding), |
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437 # module=self.module) |
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438 # copyto_entry = entrypath |
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439 # |
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440 # print "copy directory", copyfrom_entry, 'to', copyto_entry |
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441 # |
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442 # copies.append((copyfrom_entry, copyto_entry)) |
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443 |
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444 if ent.copyfrom_path: |
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445 copyfrom_path = ent.copyfrom_path.decode(self.encoding) |
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446 copyfrom_entry = get_entry_from_path(copyfrom_path, module=self.module) |
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447 if copyfrom_entry: |
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448 copyfrom[path] = ent |
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449 self.ui.debug("mark %s came from %s\n" % (path, copyfrom[path])) |
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450 |
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451 # Good, /probably/ a regular copy. Really should check |
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452 # to see whether the parent revision actually contains |
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453 # the directory in question. |
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454 children = self._find_children(self.recode(copyfrom_path), ent.copyfrom_rev) |
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455 children.sort() |
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456 for child in children: |
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457 entrypath = get_entry_from_path("/" + child, module=self.module) |
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458 if entrypath: |
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459 entry = entrypath.decode(self.encoding) |
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460 # print "COPY COPY From", copyfrom_entry, entry |
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461 copyto_path = path + entry[len(copyfrom_entry):] |
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462 copyto_entry = get_entry_from_path(copyto_path, module=self.module) |
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463 # print "COPY", entry, "COPY To", copyto_entry |
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464 copies[self.recode(copyto_entry)] = self.recode(entry) |
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465 # copy from quux splort/quuxfile |
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466 |
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467 self.modulemap[revnum] = self.module # track backwards in time |
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468 # a list of (filename, id) where id lets us retrieve the file. |
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469 # eg in git, id is the object hash. for svn it'll be the |
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470 self.files[rev] = zip(entries, [rev] * len(entries)) |
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471 if not entries: |
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472 return |
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473 |
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474 # Example SVN datetime. Includes microseconds. |
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475 # ISO-8601 conformant |
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476 # '2007-01-04T17:35:00.902377Z' |
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477 date = util.parsedate(date[:18] + " UTC", ["%Y-%m-%dT%H:%M:%S"]) |
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478 |
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479 log = message and self.recode(message) |
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480 author = author and self.recode(author) or '' |
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481 |
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482 cset = commit(author=author, |
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483 date=util.datestr(date), |
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484 desc=log, |
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485 parents=parents, |
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486 copies=copies, |
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487 branch=branch, |
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488 rev=rev.encode('utf-8')) |
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489 |
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490 self.commits[rev] = cset |
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491 if self.child_cset and not self.child_cset.parents: |
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492 self.child_cset.parents = [rev] |
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493 self.child_cset = cset |
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494 |
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495 self.ui.note('fetching revision log for "%s" from %d to %d\n' % \ |
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496 (self.module, from_revnum, to_revnum)) |
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497 |
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498 try: |
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499 discover_changed_paths = True |
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500 strict_node_history = False |
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501 svn.ra.get_log(self.ra, [self.module], from_revnum, to_revnum, 0, |
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502 discover_changed_paths, strict_node_history, |
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503 receivelog) |
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504 for entry in received: |
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505 parselogentry(*entry) |
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506 except SubversionException, (_, num): |
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507 if num == svn.core.SVN_ERR_FS_NO_SUCH_REVISION: |
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508 raise NoSuchRevision(branch=self, |
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509 revision="Revision number %d" % to_revnum) |
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510 raise |
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511 |
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512 def _getfile(self, file, rev): |
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513 io = StringIO() |
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514 # TODO: ra.get_file transmits the whole file instead of diffs. |
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515 mode = '' |
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516 try: |
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517 revnum = self.revnum(rev) |
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518 if self.module != self.modulemap[revnum]: |
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519 self.module = self.modulemap[revnum] |
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520 self.reparent(self.module) |
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521 info = svn.ra.get_file(self.ra, file, revnum, io) |
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522 if isinstance(info, list): |
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523 info = info[-1] |
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524 mode = ("svn:executable" in info) and 'x' or '' |
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525 mode = ("svn:special" in info) and 'l' or mode |
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526 except SubversionException, e: |
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527 notfound = (svn.core.SVN_ERR_FS_NOT_FOUND, |
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528 svn.core.SVN_ERR_RA_DAV_PATH_NOT_FOUND) |
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529 if e.apr_err in notfound: # File not found |
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530 raise IOError() |
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531 raise |
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532 data = io.getvalue() |
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533 if mode == 'l': |
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534 link_prefix = "link " |
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535 if data.startswith(link_prefix): |
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536 data = data[len(link_prefix):] |
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537 return data, mode |
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538 |
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539 def _find_children(self, path, revnum): |
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540 path = path.strip("/") |
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541 |
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542 def _find_children_fallback(path, revnum): |
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543 # SWIG python bindings for getdir are broken up to at least 1.4.3 |
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544 pool = Pool() |
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545 optrev = svn.core.svn_opt_revision_t() |
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546 optrev.kind = svn.core.svn_opt_revision_number |
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547 optrev.value.number = revnum |
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548 rpath = '/'.join([self.base, path]).strip('/') |
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549 return ['%s/%s' % (path, x) for x in svn.client.ls(rpath, optrev, True, self.ctx, pool).keys()] |
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550 |
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551 if hasattr(self, '_find_children_fallback'): |
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552 return _find_children_fallback(path, revnum) |
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553 |
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554 self.reparent("/" + path) |
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555 pool = Pool() |
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556 |
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557 children = [] |
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558 def find_children_inner(children, path, revnum = revnum): |
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559 if hasattr(svn.ra, 'get_dir2'): # Since SVN 1.4 |
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560 fields = 0xffffffff # Binding does not provide SVN_DIRENT_ALL |
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561 getdir = svn.ra.get_dir2(self.ra, path, revnum, fields, pool) |
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562 else: |
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563 getdir = svn.ra.get_dir(self.ra, path, revnum, pool) |
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564 if type(getdir) == dict: |
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565 # python binding for getdir is broken up to at least 1.4.3 |
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566 raise CompatibilityException() |
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567 dirents = getdir[0] |
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568 if type(dirents) == int: |
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569 # got here once due to infinite recursion bug |
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570 # pprint.pprint(getdir) |
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571 return |
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572 c = dirents.keys() |
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573 c.sort() |
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574 for child in c: |
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575 dirent = dirents[child] |
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576 if dirent.kind == svn.core.svn_node_dir: |
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577 find_children_inner(children, (path + "/" + child).strip("/")) |
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578 else: |
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579 children.append((path + "/" + child).strip("/")) |
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580 |
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581 try: |
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582 find_children_inner(children, "") |
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583 except CompatibilityException: |
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584 self._find_children_fallback = True |
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585 self.reparent(self.module) |
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586 return _find_children_fallback(path, revnum) |
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587 |
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588 self.reparent(self.module) |
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589 return [path + "/" + c for c in children] |