Mercurial > hg > mercurial-crew-with-dirclash
annotate hgext/convert/subversion.py @ 4791:9f20f4b205ba
convert: svn: parse log entries as they arrive instead of deferring it
author | Brendan Cully <brendan@kublai.com> |
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date | Tue, 03 Jul 2007 14:16:54 -0700 |
parents | 2b5723a5b186 |
children | 1f10a6cccdb5 |
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 LOG_BATCH_SIZE = 50 |
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31 |
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32 class svn_entry(object): |
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33 """Emulate a Subversion path change.""" |
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34 __slots__ = ['path', 'copyfrom_path', 'copyfrom_rev', 'action'] |
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35 def __init__(self, entry): |
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36 self.copyfrom_path = entry.copyfrom_path |
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37 self.copyfrom_rev = entry.copyfrom_rev |
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38 self.action = entry.action |
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39 |
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40 def __str__(self): |
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41 return "%s %s %s" % (self.action, self.copyfrom_path, self.copyfrom_rev) |
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42 |
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43 def __repr__(self): |
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44 return self.__str__() |
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45 |
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46 class svn_paths(object): |
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47 """Emulate a Subversion ordered dictionary of changed paths.""" |
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48 __slots__ = ['values', 'order'] |
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49 def __init__(self, orig_paths): |
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50 self.order = [] |
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51 self.values = {} |
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52 if hasattr(orig_paths, 'keys'): |
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53 self.order = sorted(orig_paths.keys()) |
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54 self.values.update(orig_paths) |
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55 return |
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56 if not orig_paths: |
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57 return |
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58 for path in orig_paths: |
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59 self.order.append(path) |
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60 self.values[path] = svn_entry(orig_paths[path]) |
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61 self.order.sort() # maybe the order it came in isn't so great... |
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62 |
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63 def __iter__(self): |
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64 return iter(self.order) |
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65 |
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66 def __getitem__(self, key): |
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67 return self.values[key] |
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68 |
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69 def __str__(self): |
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70 s = "{\n" |
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71 for path in self.order: |
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72 s += "'%s': %s,\n" % (path, self.values[path]) |
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73 s += "}" |
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74 return s |
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75 |
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76 def __repr__(self): |
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77 return self.__str__() |
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78 |
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79 # SVN conversion code stolen from bzr-svn and tailor |
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80 class convert_svn(converter_source): |
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81 def __init__(self, ui, url, rev=None): |
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82 try: |
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83 SubversionException |
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84 except NameError: |
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85 msg = 'subversion python bindings could not be loaded\n' |
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86 ui.warn(msg) |
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87 raise NoRepo(msg) |
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88 |
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89 self.ui = ui |
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90 self.encoding = locale.getpreferredencoding() |
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91 latest = None |
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92 if rev: |
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93 try: |
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94 latest = int(rev) |
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95 except ValueError: |
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96 raise util.Abort('svn: revision %s is not an integer' % rev) |
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97 try: |
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98 # Support file://path@rev syntax. Useful e.g. to convert |
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99 # deleted branches. |
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100 url, latest = url.rsplit("@", 1) |
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101 latest = int(latest) |
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102 except ValueError, e: |
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103 pass |
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104 self.url = url |
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105 self.encoding = 'UTF-8' # Subversion is always nominal UTF-8 |
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106 try: |
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107 self.transport = transport.SvnRaTransport(url = url) |
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108 self.ra = self.transport.ra |
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109 self.base = svn.ra.get_repos_root(self.ra) |
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110 self.module = self.url[len(self.base):] |
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111 self.modulemap = {} # revision, module |
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112 self.commits = {} |
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113 self.files = {} |
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114 self.uuid = svn.ra.get_uuid(self.ra).decode(self.encoding) |
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115 except SubversionException, e: |
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116 raise NoRepo("couldn't open SVN repo %s" % url) |
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117 |
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118 try: |
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119 self.get_blacklist() |
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120 except IOError, e: |
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121 pass |
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122 |
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123 self.last_changed = self.latest(self.module, latest) |
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124 |
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125 self.head = self.rev(self.last_changed) |
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126 |
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127 def rev(self, revnum): |
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128 return (u"svn:%s%s@%s" % (self.uuid, self.module, revnum)).decode(self.encoding) |
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129 |
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130 def revnum(self, rev): |
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131 return int(rev.split('@')[-1]) |
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132 |
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133 def latest(self, path, stop=0): |
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134 'find the latest revision affecting path, up to stop' |
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135 if not stop: |
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136 stop = svn.ra.get_latest_revnum(self.ra) |
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137 try: |
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138 self.reparent('') |
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139 dirent = svn.ra.stat(self.ra, path.strip('/'), stop) |
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140 self.reparent(self.module) |
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141 except SubversionException: |
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142 dirent = None |
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143 if not dirent: |
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144 raise util.Abort('%s not found up to revision %d' \ |
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145 % (path, stop)) |
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146 |
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147 return dirent.created_rev |
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148 |
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149 def get_blacklist(self): |
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150 """Avoid certain revision numbers. |
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151 It is not uncommon for two nearby revisions to cancel each other |
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152 out, e.g. 'I copied trunk into a subdirectory of itself instead |
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153 of making a branch'. The converted repository is significantly |
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154 smaller if we ignore such revisions.""" |
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155 self.blacklist = set() |
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156 blacklist = self.blacklist |
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157 for line in file("blacklist.txt", "r"): |
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158 if not line.startswith("#"): |
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159 try: |
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160 svn_rev = int(line.strip()) |
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161 blacklist.add(svn_rev) |
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162 except ValueError, e: |
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163 pass # not an integer or a comment |
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164 |
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165 def is_blacklisted(self, svn_rev): |
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166 return svn_rev in self.blacklist |
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167 |
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168 def reparent(self, module): |
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169 svn_url = self.base + module |
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170 self.ui.debug("reparent to %s\n" % svn_url.encode(self.encoding)) |
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171 svn.ra.reparent(self.ra, svn_url.encode(self.encoding)) |
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172 |
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173 def _fetch_revisions(self, from_revnum = 0, to_revnum = 347, pb=None): |
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174 # batching is broken for branches |
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175 to_revnum = 0 |
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176 if not hasattr(self, 'child_rev'): |
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177 self.child_rev = from_revnum |
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178 self.child_cset = self.commits.get(self.child_rev) |
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179 else: |
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180 self.commits[self.child_rev] = self.child_cset |
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181 # batching broken |
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182 return |
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183 # if the branch was created in the middle of the last batch, |
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184 # svn log will complain that the path doesn't exist in this batch |
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185 # so we roll the parser back to the last revision where this branch appeared |
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186 revnum = self.revnum(self.child_rev) |
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187 if revnum > from_revnum: |
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188 from_revnum = revnum |
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189 |
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190 self.ui.note('fetching revision log from %d to %d\n' % \ |
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191 (from_revnum, to_revnum)) |
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192 |
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193 def get_entry_from_path(path, module=self.module): |
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194 # Given the repository url of this wc, say |
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195 # "http://server/plone/CMFPlone/branches/Plone-2_0-branch" |
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196 # extract the "entry" portion (a relative path) from what |
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197 # svn log --xml says, ie |
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198 # "/CMFPlone/branches/Plone-2_0-branch/tests/PloneTestCase.py" |
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199 # that is to say "tests/PloneTestCase.py" |
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200 |
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201 if path.startswith(module): |
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202 relative = path[len(module):] |
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203 if relative.startswith('/'): |
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204 return relative[1:] |
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205 else: |
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206 return relative |
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207 |
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208 # The path is outside our tracked tree... |
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209 self.ui.debug('Ignoring %r since it is not under %r\n' % (path, module)) |
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210 return None |
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211 |
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212 def parselogentry(*arg, **args): |
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213 orig_paths, revnum, author, date, message, pool = arg |
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214 orig_paths = svn_paths(orig_paths) |
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215 |
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216 if self.is_blacklisted(revnum): |
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217 self.ui.note('skipping blacklisted revision %d\n' % revnum) |
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218 return |
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219 |
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220 self.ui.note("parsing revision %d\n" % revnum) |
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221 |
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222 if orig_paths is None: |
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223 self.ui.debug('revision %d has no entries\n' % revnum) |
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224 return |
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225 |
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226 if revnum in self.modulemap: |
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227 new_module = self.modulemap[revnum] |
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228 if new_module != self.module: |
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229 self.module = new_module |
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230 self.reparent(self.module) |
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231 |
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232 copyfrom = {} # Map of entrypath, revision for finding source of deleted revisions. |
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233 copies = {} |
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234 entries = [] |
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235 rev = self.rev(revnum) |
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236 try: |
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237 branch = self.module.split("/")[-1] |
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238 if branch == 'trunk': |
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239 branch = '' |
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240 except IndexError: |
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241 branch = None |
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242 |
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243 for path in orig_paths: |
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244 # self.ui.write("path %s\n" % path) |
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245 if path == self.module: # Follow branching back in history |
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246 ent = orig_paths[path] |
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247 if ent: |
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248 if ent.copyfrom_path: |
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249 self.modulemap[ent.copyfrom_rev] = ent.copyfrom_path |
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250 else: |
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251 self.ui.debug("No copyfrom path, don't know what to do.\n") |
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252 # Maybe it was added and there is no more history. |
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253 entrypath = get_entry_from_path(path, module=self.module) |
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254 # self.ui.write("entrypath %s\n" % entrypath) |
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255 if entrypath is None: |
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256 # Outside our area of interest |
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257 self.ui.debug("boring@%s: %s\n" % (revnum, path)) |
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258 continue |
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259 entry = entrypath.decode(self.encoding) |
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260 ent = orig_paths[path] |
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261 if not entrypath: |
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262 # TODO: branch creation event |
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263 pass |
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264 |
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265 kind = svn.ra.check_path(self.ra, entrypath, revnum) |
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266 if kind == svn.core.svn_node_file: |
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267 if ent.copyfrom_path: |
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268 copyfrom_path = get_entry_from_path(ent.copyfrom_path) |
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269 if copyfrom_path: |
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270 self.ui.debug("Copied to %s from %s@%s\n" % (entry, copyfrom_path, ent.copyfrom_rev)) |
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271 # It's probably important for hg that the source |
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272 # exists in the revision's parent, not just the |
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273 # ent.copyfrom_rev |
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274 fromkind = svn.ra.check_path(self.ra, copyfrom_path, ent.copyfrom_rev) |
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275 if fromkind != 0: |
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276 copies[self.recode(entry)] = self.recode(copyfrom_path) |
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277 entries.append(self.recode(entry)) |
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278 elif kind == 0: # gone, but had better be a deleted *file* |
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279 self.ui.debug("gone from %s\n" % ent.copyfrom_rev) |
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280 |
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281 fromrev = revnum - 1 |
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282 # might always need to be revnum - 1 in these 3 lines? |
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283 old_module = self.modulemap.get(fromrev, self.module) |
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284 basepath = old_module + "/" + get_entry_from_path(path, module=self.module) |
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285 entrypath = old_module + "/" + get_entry_from_path(path, module=self.module) |
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286 |
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287 def lookup_parts(p): |
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288 rc = None |
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289 parts = p.split("/") |
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290 for i in range(len(parts)): |
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291 part = "/".join(parts[:i]) |
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292 info = part, copyfrom.get(part, None) |
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293 if info[1] is not None: |
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294 self.ui.debug("Found parent directory %s\n" % info) |
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295 rc = info |
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296 return rc |
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297 |
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298 self.ui.debug("base, entry %s %s\n" % (basepath, entrypath)) |
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299 |
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300 frompath, froment = lookup_parts(entrypath) or (None, revnum - 1) |
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301 |
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302 # need to remove fragment from lookup_parts and replace with copyfrom_path |
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303 if frompath is not None: |
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304 self.ui.debug("munge-o-matic\n") |
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305 self.ui.debug(entrypath + '\n') |
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306 self.ui.debug(entrypath[len(frompath):] + '\n') |
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307 entrypath = froment.copyfrom_path + entrypath[len(frompath):] |
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308 fromrev = froment.copyfrom_rev |
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309 self.ui.debug("Info: %s %s %s %s\n" % (frompath, froment, ent, entrypath)) |
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310 |
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311 fromkind = svn.ra.check_path(self.ra, entrypath, fromrev) |
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312 if fromkind == svn.core.svn_node_file: # a deleted file |
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313 entries.append(self.recode(entry)) |
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314 else: |
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315 # print "Deleted/moved non-file:", revnum, path, ent |
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316 # children = self._find_children(path, revnum - 1) |
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317 # print "find children %s@%d from %d action %s" % (path, revnum, ent.copyfrom_rev, ent.action) |
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318 # Sometimes this is tricky. For example: in |
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319 # The Subversion Repository revision 6940 a dir |
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320 # was copied and one of its files was deleted |
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321 # from the new location in the same commit. This |
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322 # code can't deal with that yet. |
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323 if ent.action == 'C': |
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324 children = self._find_children(path, fromrev) |
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325 else: |
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326 oroot = entrypath.strip('/') |
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327 nroot = path.strip('/') |
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328 children = self._find_children(oroot, fromrev) |
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329 children = [s.replace(oroot,nroot) for s in children] |
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330 # Mark all [files, not directories] as deleted. |
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331 for child in children: |
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332 # Can we move a child directory and its |
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333 # parent in the same commit? (probably can). Could |
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334 # cause problems if instead of revnum -1, |
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335 # we have to look in (copyfrom_path, revnum - 1) |
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336 entrypath = get_entry_from_path("/" + child, module=old_module) |
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337 if entrypath: |
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338 entry = self.recode(entrypath.decode(self.encoding)) |
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339 if entry in copies: |
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340 # deleted file within a copy |
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341 del copies[entry] |
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342 else: |
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343 entries.append(entry) |
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344 elif kind == svn.core.svn_node_dir: |
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345 # Should probably synthesize normal file entries |
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346 # and handle as above to clean up copy/rename handling. |
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347 |
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348 # If the directory just had a prop change, |
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349 # then we shouldn't need to look for its children. |
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350 # Also this could create duplicate entries. Not sure |
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351 # whether this will matter. Maybe should make entries a set. |
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352 # print "Changed directory", revnum, path, ent.action, ent.copyfrom_path, ent.copyfrom_rev |
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353 # This will fail if a directory was copied |
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354 # from another branch and then some of its files |
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355 # were deleted in the same transaction. |
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356 children = self._find_children(path, revnum) |
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357 children.sort() |
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358 for child in children: |
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359 # Can we move a child directory and its |
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360 # parent in the same commit? (probably can). Could |
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361 # cause problems if instead of revnum -1, |
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362 # we have to look in (copyfrom_path, revnum - 1) |
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363 entrypath = get_entry_from_path("/" + child, module=self.module) |
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364 # print child, self.module, entrypath |
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365 if entrypath: |
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366 # Need to filter out directories here... |
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367 kind = svn.ra.check_path(self.ra, entrypath, revnum) |
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368 if kind != svn.core.svn_node_dir: |
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369 entries.append(self.recode(entrypath)) |
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370 |
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371 # Copies here (must copy all from source) |
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372 # Probably not a real problem for us if |
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373 # source does not exist |
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374 |
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375 # Can do this with the copy command "hg copy" |
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376 # if ent.copyfrom_path: |
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377 # copyfrom_entry = get_entry_from_path(ent.copyfrom_path.decode(self.encoding), |
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378 # module=self.module) |
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379 # copyto_entry = entrypath |
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380 # |
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381 # print "copy directory", copyfrom_entry, 'to', copyto_entry |
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382 # |
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383 # copies.append((copyfrom_entry, copyto_entry)) |
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384 |
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385 if ent.copyfrom_path: |
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386 copyfrom_path = ent.copyfrom_path.decode(self.encoding) |
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387 copyfrom_entry = get_entry_from_path(copyfrom_path, module=self.module) |
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388 if copyfrom_entry: |
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389 copyfrom[path] = ent |
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390 self.ui.debug("mark %s came from %s\n" % (path, copyfrom[path])) |
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391 |
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392 # Good, /probably/ a regular copy. Really should check |
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393 # to see whether the parent revision actually contains |
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394 # the directory in question. |
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395 children = self._find_children(self.recode(copyfrom_path), ent.copyfrom_rev) |
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396 children.sort() |
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397 for child in children: |
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398 entrypath = get_entry_from_path("/" + child, module=self.module) |
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399 if entrypath: |
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400 entry = entrypath.decode(self.encoding) |
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401 # print "COPY COPY From", copyfrom_entry, entry |
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402 copyto_path = path + entry[len(copyfrom_entry):] |
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403 copyto_entry = get_entry_from_path(copyto_path, module=self.module) |
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404 # print "COPY", entry, "COPY To", copyto_entry |
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405 copies[self.recode(copyto_entry)] = self.recode(entry) |
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406 # copy from quux splort/quuxfile |
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407 |
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408 self.modulemap[revnum] = self.module # track backwards in time |
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409 # a list of (filename, id) where id lets us retrieve the file. |
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410 # eg in git, id is the object hash. for svn it'll be the |
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411 self.files[rev] = zip(entries, [rev] * len(entries)) |
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412 if not entries: |
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413 return |
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414 |
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415 # Example SVN datetime. Includes microseconds. |
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416 # ISO-8601 conformant |
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417 # '2007-01-04T17:35:00.902377Z' |
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418 date = util.parsedate(date[:18] + " UTC", ["%Y-%m-%dT%H:%M:%S"]) |
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419 |
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420 log = message and self.recode(message) |
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421 author = author and self.recode(author) or '' |
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422 |
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423 cset = commit(author=author, |
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424 date=util.datestr(date), |
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425 desc=log, |
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426 parents=[], |
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427 copies=copies, |
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428 branch=branch) |
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429 |
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430 if self.child_cset and self.child_rev != rev: |
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431 self.child_cset.parents = [rev] |
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432 self.commits[self.child_rev] = self.child_cset |
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433 self.child_cset = cset |
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434 self.child_rev = rev |
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435 |
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436 try: |
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437 discover_changed_paths = True |
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438 strict_node_history = False |
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439 svn.ra.get_log(self.ra, [self.module], from_revnum, to_revnum, 0, |
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440 discover_changed_paths, strict_node_history, |
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441 parselogentry) |
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442 self.last_revnum = to_revnum |
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443 except SubversionException, (_, num): |
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444 if num == svn.core.SVN_ERR_FS_NO_SUCH_REVISION: |
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445 raise NoSuchRevision(branch=self, |
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446 revision="Revision number %d" % to_revnum) |
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447 raise |
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448 |
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449 def getheads(self): |
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450 # svn-url@rev |
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451 # Not safe if someone committed: |
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452 self.heads = [self.head] |
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453 # print self.commits.keys() |
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454 return self.heads |
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455 |
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456 def _getfile(self, file, rev): |
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457 io = StringIO() |
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458 # TODO: ra.get_file transmits the whole file instead of diffs. |
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459 mode = '' |
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460 try: |
4767
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461 revnum = self.revnum(rev) |
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462 if self.module != self.modulemap[revnum]: |
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463 self.module = self.modulemap[revnum] |
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464 self.reparent(self.module) |
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465 info = svn.ra.get_file(self.ra, file, revnum, io) |
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466 if isinstance(info, list): |
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467 info = info[-1] |
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468 mode = ("svn:executable" in info) and 'x' or '' |
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469 mode = ("svn:special" in info) and 'l' or mode |
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470 except SubversionException, e: |
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471 notfound = (svn.core.SVN_ERR_FS_NOT_FOUND, |
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472 svn.core.SVN_ERR_RA_DAV_PATH_NOT_FOUND) |
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473 if e.apr_err in notfound: # File not found |
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474 raise IOError() |
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475 raise |
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476 data = io.getvalue() |
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477 if mode == 'l': |
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478 link_prefix = "link " |
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479 if data.startswith(link_prefix): |
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480 data = data[len(link_prefix):] |
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481 return data, mode |
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482 |
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483 def getfile(self, file, rev): |
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484 data, mode = self._getfile(file, rev) |
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485 self.modecache[(file, rev)] = mode |
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486 return data |
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|
487 |
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488 def getmode(self, file, rev): |
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489 return self.modecache[(file, rev)] |
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490 |
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491 def getchanges(self, rev): |
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492 self.modecache = {} |
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493 files = self.files[rev] |
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494 cl = files |
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495 cl.sort() |
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496 return cl |
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497 |
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498 def getcommit(self, rev): |
4765
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|
499 if rev not in self.commits: |
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parents:
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|
500 revnum = self.revnum(rev) |
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4764
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501 minrev = revnum - LOG_BATCH_SIZE > 0 and revnum - LOG_BATCH_SIZE or 0 |
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502 self._fetch_revisions(from_revnum=revnum, to_revnum=minrev) |
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503 return self.commits[rev] |
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|
504 |
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505 def gettags(self): |
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506 return [] |
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|
507 |
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508 def _find_children(self, path, revnum): |
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509 path = path.strip("/") |
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|
510 |
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511 def _find_children_fallback(path, revnum): |
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512 # SWIG python bindings for getdir are broken up to at least 1.4.3 |
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513 if not hasattr(self, 'client_ctx'): |
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514 self.client_ctx = svn.client.create_context() |
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515 pool = Pool() |
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516 optrev = svn.core.svn_opt_revision_t() |
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517 optrev.kind = svn.core.svn_opt_revision_number |
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518 optrev.value.number = revnum |
4763
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Brendan Cully <brendan@kublai.com>
parents:
4762
diff
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|
519 rpath = '/'.join([self.base, path]).strip('/') |
4785
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520 return ['%s/%s' % (path, x) for x in svn.client.ls(rpath, optrev, True, self.client_ctx, pool).keys()] |
4758
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521 |
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522 if hasattr(self, '_find_children_fallback'): |
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523 return _find_children_fallback(path, revnum) |
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|
524 |
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525 self.reparent("/" + path) |
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526 pool = Pool() |
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|
527 |
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528 children = [] |
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529 def find_children_inner(children, path, revnum = revnum): |
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530 if hasattr(svn.ra, 'get_dir2'): # Since SVN 1.4 |
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531 fields = 0xffffffff # Binding does not provide SVN_DIRENT_ALL |
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532 getdir = svn.ra.get_dir2(self.ra, path, revnum, fields, pool) |
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533 else: |
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534 getdir = svn.ra.get_dir(self.ra, path, revnum, pool) |
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|
535 if type(getdir) == dict: |
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|
536 # python binding for getdir is broken up to at least 1.4.3 |
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537 raise CompatibilityException() |
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538 dirents = getdir[0] |
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|
539 if type(dirents) == int: |
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540 # got here once due to infinite recursion bug |
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541 # pprint.pprint(getdir) |
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|
542 return |
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|
543 c = dirents.keys() |
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|
544 c.sort() |
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|
545 for child in c: |
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546 dirent = dirents[child] |
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547 if dirent.kind == svn.core.svn_node_dir: |
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548 find_children_inner(children, (path + "/" + child).strip("/")) |
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549 else: |
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550 children.append((path + "/" + child).strip("/")) |
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551 |
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552 try: |
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553 find_children_inner(children, "") |
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554 except CompatibilityException: |
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|
555 self._find_children_fallback = True |
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556 self.reparent(self.module) |
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557 return _find_children_fallback(path, revnum) |
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|
558 |
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559 self.reparent(self.module) |
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560 return [path + "/" + c for c in children] |