Mercurial > kallithea
annotate rhodecode/lib/vcs/backends/git/changeset.py @ 2089:a9f2aa1e15e6 beta
bring back cs id for node history in git as it improves performance. Adding format prevents from crashes of modified gitconfigs
author | Marcin Kuzminski <marcin@python-works.com> |
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date | Fri, 02 Mar 2012 20:20:42 +0200 |
parents | 092080cd96ba |
children | 048811568c19 |
rev | line source |
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2007
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1 import re |
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2 from itertools import chain |
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3 from dulwich import objects |
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4 from subprocess import Popen, PIPE |
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5 from rhodecode.lib.vcs.conf import settings |
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6 from rhodecode.lib.vcs.exceptions import RepositoryError |
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7 from rhodecode.lib.vcs.exceptions import ChangesetError |
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8 from rhodecode.lib.vcs.exceptions import NodeDoesNotExistError |
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9 from rhodecode.lib.vcs.exceptions import VCSError |
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10 from rhodecode.lib.vcs.exceptions import ChangesetDoesNotExistError |
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11 from rhodecode.lib.vcs.exceptions import ImproperArchiveTypeError |
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12 from rhodecode.lib.vcs.backends.base import BaseChangeset |
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13 from rhodecode.lib.vcs.nodes import FileNode, DirNode, NodeKind, RootNode, RemovedFileNode |
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14 from rhodecode.lib.vcs.utils import safe_unicode |
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15 from rhodecode.lib.vcs.utils import date_fromtimestamp |
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16 from rhodecode.lib.vcs.utils.lazy import LazyProperty |
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17 |
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18 |
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19 class GitChangeset(BaseChangeset): |
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20 """ |
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21 Represents state of the repository at single revision. |
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22 """ |
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23 |
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24 def __init__(self, repository, revision): |
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25 self._stat_modes = {} |
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26 self.repository = repository |
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27 self.raw_id = revision |
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28 self.revision = repository.revisions.index(revision) |
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29 |
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30 self.short_id = self.raw_id[:12] |
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31 self.id = self.raw_id |
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32 try: |
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33 commit = self.repository._repo.get_object(self.raw_id) |
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34 except KeyError: |
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35 raise RepositoryError("Cannot get object with id %s" % self.raw_id) |
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36 self._commit = commit |
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37 self._tree_id = commit.tree |
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38 |
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39 try: |
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40 self.message = safe_unicode(commit.message[:-1]) |
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41 # Always strip last eol |
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42 except UnicodeDecodeError: |
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43 self.message = commit.message[:-1].decode(commit.encoding |
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44 or 'utf-8') |
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45 #self.branch = None |
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46 self.tags = [] |
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47 #tree = self.repository.get_object(self._tree_id) |
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48 self.nodes = {} |
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49 self._paths = {} |
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50 |
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51 @LazyProperty |
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52 def author(self): |
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53 return safe_unicode(self._commit.committer) |
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54 |
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55 @LazyProperty |
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56 def date(self): |
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57 return date_fromtimestamp(self._commit.commit_time, |
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58 self._commit.commit_timezone) |
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59 |
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60 @LazyProperty |
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61 def status(self): |
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62 """ |
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63 Returns modified, added, removed, deleted files for current changeset |
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64 """ |
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65 return self.changed, self.added, self.removed |
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66 |
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67 @LazyProperty |
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68 def branch(self): |
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69 # TODO: Cache as we walk (id <-> branch name mapping) |
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70 refs = self.repository._repo.get_refs() |
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71 heads = [(key[len('refs/heads/'):], val) for key, val in refs.items() |
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72 if key.startswith('refs/heads/')] |
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73 |
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74 for name, id in heads: |
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75 walker = self.repository._repo.object_store.get_graph_walker([id]) |
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76 while True: |
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77 id = walker.next() |
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78 if not id: |
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79 break |
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80 if id == self.id: |
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81 return safe_unicode(name) |
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82 raise ChangesetError("This should not happen... Have you manually " |
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83 "change id of the changeset?") |
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84 |
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85 def _fix_path(self, path): |
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86 """ |
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87 Paths are stored without trailing slash so we need to get rid off it if |
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88 needed. |
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89 """ |
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90 if path.endswith('/'): |
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91 path = path.rstrip('/') |
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92 return path |
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93 |
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94 def _get_id_for_path(self, path): |
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95 # FIXME: Please, spare a couple of minutes and make those codes cleaner; |
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96 if not path in self._paths: |
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97 path = path.strip('/') |
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98 # set root tree |
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99 tree = self.repository._repo[self._commit.tree] |
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100 if path == '': |
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101 self._paths[''] = tree.id |
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102 return tree.id |
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103 splitted = path.split('/') |
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104 dirs, name = splitted[:-1], splitted[-1] |
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105 curdir = '' |
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106 for dir in dirs: |
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107 if curdir: |
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108 curdir = '/'.join((curdir, dir)) |
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109 else: |
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110 curdir = dir |
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111 #if curdir in self._paths: |
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112 ## This path have been already traversed |
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113 ## Update tree and continue |
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114 #tree = self.repository._repo[self._paths[curdir]] |
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115 #continue |
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116 dir_id = None |
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117 for item, stat, id in tree.iteritems(): |
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118 if curdir: |
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119 item_path = '/'.join((curdir, item)) |
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120 else: |
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121 item_path = item |
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122 self._paths[item_path] = id |
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123 self._stat_modes[item_path] = stat |
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124 if dir == item: |
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125 dir_id = id |
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126 if dir_id: |
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127 # Update tree |
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128 tree = self.repository._repo[dir_id] |
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129 if not isinstance(tree, objects.Tree): |
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130 raise ChangesetError('%s is not a directory' % curdir) |
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131 else: |
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132 raise ChangesetError('%s have not been found' % curdir) |
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133 for item, stat, id in tree.iteritems(): |
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134 if curdir: |
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135 name = '/'.join((curdir, item)) |
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136 else: |
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137 name = item |
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138 self._paths[name] = id |
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139 self._stat_modes[name] = stat |
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140 if not path in self._paths: |
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141 raise NodeDoesNotExistError("There is no file nor directory " |
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142 "at the given path %r at revision %r" |
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143 % (path, self.short_id)) |
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144 return self._paths[path] |
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145 |
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146 def _get_kind(self, path): |
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147 id = self._get_id_for_path(path) |
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148 obj = self.repository._repo[id] |
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149 if isinstance(obj, objects.Blob): |
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150 return NodeKind.FILE |
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151 elif isinstance(obj, objects.Tree): |
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152 return NodeKind.DIR |
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153 |
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154 def _get_file_nodes(self): |
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155 return chain(*(t[2] for t in self.walk())) |
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156 |
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157 @LazyProperty |
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158 def parents(self): |
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159 """ |
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160 Returns list of parents changesets. |
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161 """ |
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162 return [self.repository.get_changeset(parent) |
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163 for parent in self._commit.parents] |
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164 |
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165 def next(self, branch=None): |
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166 |
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167 if branch and self.branch != branch: |
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168 raise VCSError('Branch option used on changeset not belonging ' |
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169 'to that branch') |
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170 |
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171 def _next(changeset, branch): |
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172 try: |
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173 next_ = changeset.revision + 1 |
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174 next_rev = changeset.repository.revisions[next_] |
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175 except IndexError: |
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176 raise ChangesetDoesNotExistError |
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177 cs = changeset.repository.get_changeset(next_rev) |
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178 |
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179 if branch and branch != cs.branch: |
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180 return _next(cs, branch) |
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181 |
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182 return cs |
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183 |
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184 return _next(self, branch) |
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185 |
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186 def prev(self, branch=None): |
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187 if branch and self.branch != branch: |
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188 raise VCSError('Branch option used on changeset not belonging ' |
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189 'to that branch') |
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190 |
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191 def _prev(changeset, branch): |
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192 try: |
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193 prev_ = changeset.revision - 1 |
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194 if prev_ < 0: |
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195 raise IndexError |
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196 prev_rev = changeset.repository.revisions[prev_] |
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197 except IndexError: |
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198 raise ChangesetDoesNotExistError |
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199 |
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200 cs = changeset.repository.get_changeset(prev_rev) |
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201 |
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202 if branch and branch != cs.branch: |
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203 return _prev(cs, branch) |
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204 |
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205 return cs |
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206 |
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207 return _prev(self, branch) |
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208 |
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209 def get_file_mode(self, path): |
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210 """ |
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211 Returns stat mode of the file at the given ``path``. |
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212 """ |
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213 # ensure path is traversed |
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214 self._get_id_for_path(path) |
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215 return self._stat_modes[path] |
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216 |
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217 def get_file_content(self, path): |
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218 """ |
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219 Returns content of the file at given ``path``. |
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220 """ |
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221 id = self._get_id_for_path(path) |
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222 blob = self.repository._repo[id] |
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223 return blob.as_pretty_string() |
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224 |
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225 def get_file_size(self, path): |
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226 """ |
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227 Returns size of the file at given ``path``. |
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228 """ |
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229 id = self._get_id_for_path(path) |
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230 blob = self.repository._repo[id] |
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231 return blob.raw_length() |
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232 |
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233 def get_file_changeset(self, path): |
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234 """ |
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235 Returns last commit of the file at the given ``path``. |
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236 """ |
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237 node = self.get_node(path) |
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238 return node.history[0] |
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239 |
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240 def get_file_history(self, path): |
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241 """ |
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242 Returns history of file as reversed list of ``Changeset`` objects for |
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243 which file at given ``path`` has been modified. |
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244 |
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245 TODO: This function now uses os underlying 'git' and 'grep' commands |
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246 which is generally not good. Should be replaced with algorithm |
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247 iterating commits. |
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248 """ |
2047 | 249 cmd = 'log --pretty="format: %%H" --name-status -p %s -- "%s"' % ( |
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250 self.id, path |
2047 | 251 ) |
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252 so, se = self.repository.run_git_command(cmd) |
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253 ids = re.findall(r'\w{40}', so) |
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254 return [self.repository.get_changeset(id) for id in ids] |
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255 |
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256 def get_file_annotate(self, path): |
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257 """ |
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258 Returns a list of three element tuples with lineno,changeset and line |
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259 |
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260 TODO: This function now uses os underlying 'git' command which is |
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261 generally not good. Should be replaced with algorithm iterating |
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262 commits. |
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263 """ |
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264 cmd = 'blame -l --root -r %s -- "%s"' % (self.id, path) |
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265 # -l ==> outputs long shas (and we need all 40 characters) |
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266 # --root ==> doesn't put '^' character for bounderies |
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267 # -r sha ==> blames for the given revision |
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268 so, se = self.repository.run_git_command(cmd) |
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269 annotate = [] |
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270 for i, blame_line in enumerate(so.split('\n')[:-1]): |
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271 ln_no = i + 1 |
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272 id, line = re.split(r' \(.+?\) ', blame_line, 1) |
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273 annotate.append((ln_no, self.repository.get_changeset(id), line)) |
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274 return annotate |
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275 |
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276 def fill_archive(self, stream=None, kind='tgz', prefix=None, |
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277 subrepos=False): |
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278 """ |
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279 Fills up given stream. |
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280 |
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281 :param stream: file like object. |
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282 :param kind: one of following: ``zip``, ``tgz`` or ``tbz2``. |
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283 Default: ``tgz``. |
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284 :param prefix: name of root directory in archive. |
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285 Default is repository name and changeset's raw_id joined with dash |
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286 (``repo-tip.<KIND>``). |
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287 :param subrepos: include subrepos in this archive. |
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288 |
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289 :raise ImproperArchiveTypeError: If given kind is wrong. |
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290 :raise VcsError: If given stream is None |
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291 |
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292 """ |
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293 allowed_kinds = settings.ARCHIVE_SPECS.keys() |
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294 if kind not in allowed_kinds: |
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295 raise ImproperArchiveTypeError('Archive kind not supported use one' |
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296 'of %s', allowed_kinds) |
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297 |
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298 if prefix is None: |
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299 prefix = '%s-%s' % (self.repository.name, self.short_id) |
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300 elif prefix.startswith('/'): |
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301 raise VCSError("Prefix cannot start with leading slash") |
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302 elif prefix.strip() == '': |
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303 raise VCSError("Prefix cannot be empty") |
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304 |
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305 if kind == 'zip': |
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306 frmt = 'zip' |
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307 else: |
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308 frmt = 'tar' |
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309 cmd = 'git archive --format=%s --prefix=%s/ %s' % (frmt, prefix, |
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310 self.raw_id) |
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311 if kind == 'tgz': |
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312 cmd += ' | gzip -9' |
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313 elif kind == 'tbz2': |
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314 cmd += ' | bzip2 -9' |
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315 |
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316 if stream is None: |
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317 raise VCSError('You need to pass in a valid stream for filling' |
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318 ' with archival data') |
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319 popen = Popen(cmd, stdout=PIPE, stderr=PIPE, shell=True, |
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320 cwd=self.repository.path) |
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321 |
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322 buffer_size = 1024 * 8 |
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323 chunk = popen.stdout.read(buffer_size) |
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324 while chunk: |
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325 stream.write(chunk) |
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326 chunk = popen.stdout.read(buffer_size) |
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327 # Make sure all descriptors would be read |
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328 popen.communicate() |
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329 |
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330 def get_nodes(self, path): |
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331 if self._get_kind(path) != NodeKind.DIR: |
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332 raise ChangesetError("Directory does not exist for revision %r at " |
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333 " %r" % (self.revision, path)) |
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334 path = self._fix_path(path) |
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335 id = self._get_id_for_path(path) |
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336 tree = self.repository._repo[id] |
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337 dirnodes = [] |
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338 filenodes = [] |
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339 for name, stat, id in tree.iteritems(): |
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340 obj = self.repository._repo.get_object(id) |
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341 if path != '': |
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342 obj_path = '/'.join((path, name)) |
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343 else: |
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344 obj_path = name |
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345 if obj_path not in self._stat_modes: |
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346 self._stat_modes[obj_path] = stat |
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347 if isinstance(obj, objects.Tree): |
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348 dirnodes.append(DirNode(obj_path, changeset=self)) |
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349 elif isinstance(obj, objects.Blob): |
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350 filenodes.append(FileNode(obj_path, changeset=self, mode=stat)) |
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351 else: |
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352 raise ChangesetError("Requested object should be Tree " |
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353 "or Blob, is %r" % type(obj)) |
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354 nodes = dirnodes + filenodes |
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355 for node in nodes: |
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356 if not node.path in self.nodes: |
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357 self.nodes[node.path] = node |
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358 nodes.sort() |
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359 return nodes |
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360 |
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361 def get_node(self, path): |
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362 if isinstance(path, unicode): |
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363 path = path.encode('utf-8') |
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364 path = self._fix_path(path) |
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365 if not path in self.nodes: |
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366 try: |
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367 id = self._get_id_for_path(path) |
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368 except ChangesetError: |
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369 raise NodeDoesNotExistError("Cannot find one of parents' " |
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370 "directories for a given path: %s" % path) |
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371 obj = self.repository._repo.get_object(id) |
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372 if isinstance(obj, objects.Tree): |
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373 if path == '': |
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374 node = RootNode(changeset=self) |
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375 else: |
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376 node = DirNode(path, changeset=self) |
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377 node._tree = obj |
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378 elif isinstance(obj, objects.Blob): |
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379 node = FileNode(path, changeset=self) |
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380 node._blob = obj |
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381 else: |
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382 raise NodeDoesNotExistError("There is no file nor directory " |
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383 "at the given path %r at revision %r" |
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384 % (path, self.short_id)) |
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385 # cache node |
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386 self.nodes[path] = node |
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387 return self.nodes[path] |
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388 |
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389 @LazyProperty |
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390 def affected_files(self): |
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391 """ |
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392 Get's a fast accessible file changes for given changeset |
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393 """ |
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394 |
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395 return self.added + self.changed |
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396 |
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397 @LazyProperty |
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398 def _diff_name_status(self): |
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399 output = [] |
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400 for parent in self.parents: |
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401 cmd = 'diff --name-status %s %s' % (parent.raw_id, self.raw_id) |
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402 so, se = self.repository.run_git_command(cmd) |
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403 output.append(so.strip()) |
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404 return '\n'.join(output) |
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405 |
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406 def _get_paths_for_status(self, status): |
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407 """ |
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408 Returns sorted list of paths for given ``status``. |
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409 |
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410 :param status: one of: *added*, *modified* or *deleted* |
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411 """ |
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412 paths = set() |
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413 char = status[0].upper() |
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414 for line in self._diff_name_status.splitlines(): |
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415 if not line: |
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416 continue |
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417 if line.startswith(char): |
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418 splitted = line.split(char,1) |
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419 if not len(splitted) == 2: |
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420 raise VCSError("Couldn't parse diff result:\n%s\n\n and " |
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421 "particularly that line: %s" % (self._diff_name_status, |
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422 line)) |
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423 paths.add(splitted[1].strip()) |
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424 return sorted(paths) |
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425 |
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426 @LazyProperty |
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427 def added(self): |
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428 """ |
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429 Returns list of added ``FileNode`` objects. |
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430 """ |
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431 if not self.parents: |
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432 return list(self._get_file_nodes()) |
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433 return [self.get_node(path) for path in self._get_paths_for_status('added')] |
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434 |
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435 @LazyProperty |
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436 def changed(self): |
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437 """ |
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438 Returns list of modified ``FileNode`` objects. |
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439 """ |
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440 if not self.parents: |
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441 return [] |
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442 return [self.get_node(path) for path in self._get_paths_for_status('modified')] |
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443 |
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444 @LazyProperty |
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445 def removed(self): |
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446 """ |
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447 Returns list of removed ``FileNode`` objects. |
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448 """ |
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449 if not self.parents: |
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450 return [] |
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451 return [RemovedFileNode(path) for path in self._get_paths_for_status('deleted')] |