Mercurial > kallithea
annotate rhodecode/lib/vcs/nodes.py @ 2734:d2f552429ef3 beta
use dict for replacing parts of avatar URL and add example to ini template
author | domruf <dominikruf@gmail.com> |
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date | Fri, 24 Aug 2012 10:37:17 +0200 |
parents | 03a770980b55 |
children | dec78aee1d53 |
rev | line source |
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2007
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1 # -*- coding: utf-8 -*- |
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2 """ |
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3 vcs.nodes |
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4 ~~~~~~~~~ |
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5 |
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6 Module holding everything related to vcs nodes. |
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7 |
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8 :created_on: Apr 8, 2010 |
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9 :copyright: (c) 2010-2011 by Marcin Kuzminski, Lukasz Balcerzak. |
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10 """ |
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11 import os |
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12 import stat |
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13 import posixpath |
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14 import mimetypes |
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15 |
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16 from pygments import lexers |
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17 |
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18 from rhodecode.lib.vcs.utils.lazy import LazyProperty |
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19 from rhodecode.lib.vcs.utils import safe_unicode |
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20 from rhodecode.lib.vcs.exceptions import NodeError |
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21 from rhodecode.lib.vcs.exceptions import RemovedFileNodeError |
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22 from rhodecode.lib.vcs.backends.base import EmptyChangeset |
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23 |
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24 |
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25 class NodeKind: |
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26 SUBMODULE = -1 |
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27 DIR = 1 |
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28 FILE = 2 |
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29 |
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30 |
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31 class NodeState: |
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32 ADDED = u'added' |
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33 CHANGED = u'changed' |
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34 NOT_CHANGED = u'not changed' |
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35 REMOVED = u'removed' |
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36 |
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37 |
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38 class NodeGeneratorBase(object): |
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39 """ |
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40 Base class for removed added and changed filenodes, it's a lazy generator |
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41 class that will create filenodes only on iteration or call |
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42 |
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43 The len method doesn't need to create filenodes at all |
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44 """ |
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45 |
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46 def __init__(self, current_paths, cs): |
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47 self.cs = cs |
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48 self.current_paths = current_paths |
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49 |
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50 def __call__(self): |
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51 return [n for n in self] |
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52 |
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53 def __getslice__(self, i, j): |
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54 for p in self.current_paths[i:j]: |
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55 yield self.cs.get_node(p) |
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56 |
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57 def __len__(self): |
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58 return len(self.current_paths) |
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59 |
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60 def __iter__(self): |
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61 for p in self.current_paths: |
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62 yield self.cs.get_node(p) |
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63 |
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64 |
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65 class AddedFileNodesGenerator(NodeGeneratorBase): |
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66 """ |
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67 Class holding Added files for current changeset |
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68 """ |
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69 pass |
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70 |
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71 |
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72 class ChangedFileNodesGenerator(NodeGeneratorBase): |
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73 """ |
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74 Class holding Changed files for current changeset |
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75 """ |
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76 pass |
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77 |
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78 |
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79 class RemovedFileNodesGenerator(NodeGeneratorBase): |
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80 """ |
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81 Class holding removed files for current changeset |
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82 """ |
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83 def __iter__(self): |
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84 for p in self.current_paths: |
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85 yield RemovedFileNode(path=p) |
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86 |
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87 def __getslice__(self, i, j): |
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88 for p in self.current_paths[i:j]: |
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89 yield RemovedFileNode(path=p) |
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90 |
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91 |
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92 class Node(object): |
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93 """ |
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94 Simplest class representing file or directory on repository. SCM backends |
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95 should use ``FileNode`` and ``DirNode`` subclasses rather than ``Node`` |
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96 directly. |
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97 |
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98 Node's ``path`` cannot start with slash as we operate on *relative* paths |
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99 only. Moreover, every single node is identified by the ``path`` attribute, |
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100 so it cannot end with slash, too. Otherwise, path could lead to mistakes. |
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101 """ |
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102 |
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103 def __init__(self, path, kind): |
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104 if path.startswith('/'): |
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105 raise NodeError("Cannot initialize Node objects with slash at " |
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106 "the beginning as only relative paths are supported") |
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107 self.path = path.rstrip('/') |
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108 if path == '' and kind != NodeKind.DIR: |
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109 raise NodeError("Only DirNode and its subclasses may be " |
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110 "initialized with empty path") |
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111 self.kind = kind |
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112 #self.dirs, self.files = [], [] |
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113 if self.is_root() and not self.is_dir(): |
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114 raise NodeError("Root node cannot be FILE kind") |
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115 |
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116 @LazyProperty |
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117 def parent(self): |
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118 parent_path = self.get_parent_path() |
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119 if parent_path: |
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120 if self.changeset: |
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121 return self.changeset.get_node(parent_path) |
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122 return DirNode(parent_path) |
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123 return None |
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124 |
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125 @LazyProperty |
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126 def unicode_path(self): |
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127 return safe_unicode(self.path) |
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128 |
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129 @LazyProperty |
2007
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130 def name(self): |
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131 """ |
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132 Returns name of the node so if its path |
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133 then only last part is returned. |
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134 """ |
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135 return safe_unicode(self.path.rstrip('/').split('/')[-1]) |
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136 |
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137 def _get_kind(self): |
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138 return self._kind |
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139 |
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140 def _set_kind(self, kind): |
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141 if hasattr(self, '_kind'): |
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142 raise NodeError("Cannot change node's kind") |
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143 else: |
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144 self._kind = kind |
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145 # Post setter check (path's trailing slash) |
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146 if self.path.endswith('/'): |
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147 raise NodeError("Node's path cannot end with slash") |
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148 |
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149 kind = property(_get_kind, _set_kind) |
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150 |
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151 def __cmp__(self, other): |
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152 """ |
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153 Comparator using name of the node, needed for quick list sorting. |
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154 """ |
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155 kind_cmp = cmp(self.kind, other.kind) |
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156 if kind_cmp: |
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157 return kind_cmp |
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158 return cmp(self.name, other.name) |
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159 |
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160 def __eq__(self, other): |
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161 for attr in ['name', 'path', 'kind']: |
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162 if getattr(self, attr) != getattr(other, attr): |
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163 return False |
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164 if self.is_file(): |
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165 if self.content != other.content: |
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166 return False |
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167 else: |
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168 # For DirNode's check without entering each dir |
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169 self_nodes_paths = list(sorted(n.path for n in self.nodes)) |
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170 other_nodes_paths = list(sorted(n.path for n in self.nodes)) |
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171 if self_nodes_paths != other_nodes_paths: |
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172 return False |
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173 return True |
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174 |
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175 def __nq__(self, other): |
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176 return not self.__eq__(other) |
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177 |
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178 def __repr__(self): |
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179 return '<%s %r>' % (self.__class__.__name__, self.path) |
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180 |
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181 def __str__(self): |
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182 return self.__repr__() |
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183 |
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184 def __unicode__(self): |
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185 return self.name |
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186 |
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187 def get_parent_path(self): |
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188 """ |
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189 Returns node's parent path or empty string if node is root. |
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190 """ |
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191 if self.is_root(): |
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192 return '' |
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193 return posixpath.dirname(self.path.rstrip('/')) + '/' |
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194 |
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195 def is_file(self): |
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196 """ |
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197 Returns ``True`` if node's kind is ``NodeKind.FILE``, ``False`` |
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198 otherwise. |
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199 """ |
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200 return self.kind == NodeKind.FILE |
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201 |
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202 def is_dir(self): |
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203 """ |
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204 Returns ``True`` if node's kind is ``NodeKind.DIR``, ``False`` |
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205 otherwise. |
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206 """ |
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207 return self.kind == NodeKind.DIR |
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208 |
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209 def is_root(self): |
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210 """ |
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211 Returns ``True`` if node is a root node and ``False`` otherwise. |
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212 """ |
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213 return self.kind == NodeKind.DIR and self.path == '' |
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214 |
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215 def is_submodule(self): |
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216 """ |
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217 Returns ``True`` if node's kind is ``NodeKind.SUBMODULE``, ``False`` |
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218 otherwise. |
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219 """ |
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220 return self.kind == NodeKind.SUBMODULE |
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221 |
2007
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222 @LazyProperty |
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223 def added(self): |
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224 return self.state is NodeState.ADDED |
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225 |
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226 @LazyProperty |
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227 def changed(self): |
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228 return self.state is NodeState.CHANGED |
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229 |
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230 @LazyProperty |
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231 def not_changed(self): |
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232 return self.state is NodeState.NOT_CHANGED |
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233 |
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234 @LazyProperty |
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235 def removed(self): |
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236 return self.state is NodeState.REMOVED |
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237 |
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238 |
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239 class FileNode(Node): |
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240 """ |
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241 Class representing file nodes. |
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242 |
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243 :attribute: path: path to the node, relative to repostiory's root |
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244 :attribute: content: if given arbitrary sets content of the file |
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245 :attribute: changeset: if given, first time content is accessed, callback |
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246 :attribute: mode: octal stat mode for a node. Default is 0100644. |
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247 """ |
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248 |
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249 def __init__(self, path, content=None, changeset=None, mode=None): |
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250 """ |
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251 Only one of ``content`` and ``changeset`` may be given. Passing both |
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252 would raise ``NodeError`` exception. |
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253 |
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254 :param path: relative path to the node |
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255 :param content: content may be passed to constructor |
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256 :param changeset: if given, will use it to lazily fetch content |
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257 :param mode: octal representation of ST_MODE (i.e. 0100644) |
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258 """ |
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259 |
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260 if content and changeset: |
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261 raise NodeError("Cannot use both content and changeset") |
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262 super(FileNode, self).__init__(path, kind=NodeKind.FILE) |
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263 self.changeset = changeset |
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264 self._content = content |
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265 self._mode = mode or 0100644 |
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266 |
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267 @LazyProperty |
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268 def mode(self): |
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269 """ |
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270 Returns lazily mode of the FileNode. If ``changeset`` is not set, would |
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271 use value given at initialization or 0100644 (default). |
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272 """ |
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273 if self.changeset: |
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274 mode = self.changeset.get_file_mode(self.path) |
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275 else: |
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276 mode = self._mode |
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277 return mode |
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278 |
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279 @property |
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280 def content(self): |
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281 """ |
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282 Returns lazily content of the FileNode. If possible, would try to |
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283 decode content from UTF-8. |
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284 """ |
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285 if self.changeset: |
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286 content = self.changeset.get_file_content(self.path) |
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287 else: |
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288 content = self._content |
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289 |
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290 if bool(content and '\0' in content): |
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291 return content |
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292 return safe_unicode(content) |
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293 |
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294 @LazyProperty |
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295 def size(self): |
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296 if self.changeset: |
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297 return self.changeset.get_file_size(self.path) |
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298 raise NodeError("Cannot retrieve size of the file without related " |
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299 "changeset attribute") |
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300 |
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301 @LazyProperty |
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302 def message(self): |
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303 if self.changeset: |
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304 return self.last_changeset.message |
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305 raise NodeError("Cannot retrieve message of the file without related " |
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306 "changeset attribute") |
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307 |
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308 @LazyProperty |
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309 def last_changeset(self): |
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310 if self.changeset: |
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311 return self.changeset.get_file_changeset(self.path) |
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312 raise NodeError("Cannot retrieve last changeset of the file without " |
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313 "related changeset attribute") |
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314 |
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315 def get_mimetype(self): |
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316 """ |
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317 Mimetype is calculated based on the file's content. If ``_mimetype`` |
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318 attribute is available, it will be returned (backends which store |
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319 mimetypes or can easily recognize them, should set this private |
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320 attribute to indicate that type should *NOT* be calculated). |
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321 """ |
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322 if hasattr(self, '_mimetype'): |
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323 if (isinstance(self._mimetype, (tuple, list,)) and |
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324 len(self._mimetype) == 2): |
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325 return self._mimetype |
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326 else: |
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327 raise NodeError('given _mimetype attribute must be an 2 ' |
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328 'element list or tuple') |
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329 |
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330 mtype, encoding = mimetypes.guess_type(self.name) |
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331 |
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332 if mtype is None: |
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333 if self.is_binary: |
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334 mtype = 'application/octet-stream' |
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335 encoding = None |
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336 else: |
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337 mtype = 'text/plain' |
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338 encoding = None |
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339 return mtype, encoding |
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340 |
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341 @LazyProperty |
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342 def mimetype(self): |
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343 """ |
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344 Wrapper around full mimetype info. It returns only type of fetched |
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345 mimetype without the encoding part. use get_mimetype function to fetch |
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346 full set of (type,encoding) |
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347 """ |
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348 return self.get_mimetype()[0] |
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349 |
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350 @LazyProperty |
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351 def mimetype_main(self): |
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352 return self.mimetype.split('/')[0] |
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353 |
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354 @LazyProperty |
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355 def lexer(self): |
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356 """ |
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357 Returns pygment's lexer class. Would try to guess lexer taking file's |
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358 content, name and mimetype. |
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359 """ |
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360 try: |
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361 lexer = lexers.guess_lexer_for_filename(self.name, self.content) |
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362 except lexers.ClassNotFound: |
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363 lexer = lexers.TextLexer() |
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364 # returns first alias |
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365 return lexer |
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366 |
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367 @LazyProperty |
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368 def lexer_alias(self): |
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369 """ |
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370 Returns first alias of the lexer guessed for this file. |
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371 """ |
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372 return self.lexer.aliases[0] |
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373 |
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374 @LazyProperty |
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375 def history(self): |
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376 """ |
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377 Returns a list of changeset for this file in which the file was changed |
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378 """ |
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379 if self.changeset is None: |
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380 raise NodeError('Unable to get changeset for this FileNode') |
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381 return self.changeset.get_file_history(self.path) |
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382 |
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383 @LazyProperty |
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384 def annotate(self): |
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385 """ |
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386 Returns a list of three element tuples with lineno,changeset and line |
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387 """ |
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388 if self.changeset is None: |
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389 raise NodeError('Unable to get changeset for this FileNode') |
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390 return self.changeset.get_file_annotate(self.path) |
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391 |
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392 @LazyProperty |
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393 def state(self): |
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394 if not self.changeset: |
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395 raise NodeError("Cannot check state of the node if it's not " |
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396 "linked with changeset") |
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397 elif self.path in (node.path for node in self.changeset.added): |
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398 return NodeState.ADDED |
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399 elif self.path in (node.path for node in self.changeset.changed): |
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400 return NodeState.CHANGED |
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401 else: |
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402 return NodeState.NOT_CHANGED |
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403 |
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404 @property |
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405 def is_binary(self): |
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406 """ |
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407 Returns True if file has binary content. |
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408 """ |
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409 _bin = '\0' in self.content |
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410 return _bin |
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411 |
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412 @LazyProperty |
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413 def extension(self): |
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414 """Returns filenode extension""" |
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415 return self.name.split('.')[-1] |
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416 |
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417 def is_executable(self): |
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418 """ |
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419 Returns ``True`` if file has executable flag turned on. |
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420 """ |
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421 return bool(self.mode & stat.S_IXUSR) |
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422 |
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423 def __repr__(self): |
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424 return '<%s %r @ %s>' % (self.__class__.__name__, self.path, |
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425 getattr(self.changeset, 'short_id', '')) |
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426 |
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427 |
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428 class RemovedFileNode(FileNode): |
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429 """ |
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430 Dummy FileNode class - trying to access any public attribute except path, |
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431 name, kind or state (or methods/attributes checking those two) would raise |
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432 RemovedFileNodeError. |
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433 """ |
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434 ALLOWED_ATTRIBUTES = [ |
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435 'name', 'path', 'state', 'is_root', 'is_file', 'is_dir', 'kind', |
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436 'added', 'changed', 'not_changed', 'removed' |
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437 ] |
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438 |
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439 def __init__(self, path): |
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440 """ |
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441 :param path: relative path to the node |
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442 """ |
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443 super(RemovedFileNode, self).__init__(path=path) |
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444 |
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445 def __getattribute__(self, attr): |
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446 if attr.startswith('_') or attr in RemovedFileNode.ALLOWED_ATTRIBUTES: |
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447 return super(RemovedFileNode, self).__getattribute__(attr) |
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448 raise RemovedFileNodeError("Cannot access attribute %s on " |
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449 "RemovedFileNode" % attr) |
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450 |
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451 @LazyProperty |
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452 def state(self): |
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453 return NodeState.REMOVED |
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454 |
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455 |
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456 class DirNode(Node): |
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457 """ |
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458 DirNode stores list of files and directories within this node. |
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459 Nodes may be used standalone but within repository context they |
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460 lazily fetch data within same repositorty's changeset. |
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461 """ |
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462 |
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463 def __init__(self, path, nodes=(), changeset=None): |
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464 """ |
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465 Only one of ``nodes`` and ``changeset`` may be given. Passing both |
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466 would raise ``NodeError`` exception. |
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467 |
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468 :param path: relative path to the node |
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469 :param nodes: content may be passed to constructor |
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470 :param changeset: if given, will use it to lazily fetch content |
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471 :param size: always 0 for ``DirNode`` |
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472 """ |
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473 if nodes and changeset: |
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474 raise NodeError("Cannot use both nodes and changeset") |
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475 super(DirNode, self).__init__(path, NodeKind.DIR) |
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476 self.changeset = changeset |
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477 self._nodes = nodes |
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478 |
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479 @LazyProperty |
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480 def content(self): |
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481 raise NodeError("%s represents a dir and has no ``content`` attribute" |
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482 % self) |
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483 |
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484 @LazyProperty |
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485 def nodes(self): |
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486 if self.changeset: |
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487 nodes = self.changeset.get_nodes(self.path) |
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488 else: |
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489 nodes = self._nodes |
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490 self._nodes_dict = dict((node.path, node) for node in nodes) |
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491 return sorted(nodes) |
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492 |
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493 @LazyProperty |
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494 def files(self): |
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495 return sorted((node for node in self.nodes if node.is_file())) |
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496 |
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497 @LazyProperty |
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498 def dirs(self): |
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499 return sorted((node for node in self.nodes if node.is_dir())) |
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500 |
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501 def __iter__(self): |
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502 for node in self.nodes: |
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503 yield node |
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504 |
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505 def get_node(self, path): |
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506 """ |
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507 Returns node from within this particular ``DirNode``, so it is now |
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508 allowed to fetch, i.e. node located at 'docs/api/index.rst' from node |
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509 'docs'. In order to access deeper nodes one must fetch nodes between |
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510 them first - this would work:: |
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511 |
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512 docs = root.get_node('docs') |
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513 docs.get_node('api').get_node('index.rst') |
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514 |
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515 :param: path - relative to the current node |
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516 |
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517 .. note:: |
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518 To access lazily (as in example above) node have to be initialized |
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519 with related changeset object - without it node is out of |
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520 context and may know nothing about anything else than nearest |
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521 (located at same level) nodes. |
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522 """ |
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523 try: |
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524 path = path.rstrip('/') |
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525 if path == '': |
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526 raise NodeError("Cannot retrieve node without path") |
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527 self.nodes # access nodes first in order to set _nodes_dict |
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528 paths = path.split('/') |
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529 if len(paths) == 1: |
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530 if not self.is_root(): |
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531 path = '/'.join((self.path, paths[0])) |
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532 else: |
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533 path = paths[0] |
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534 return self._nodes_dict[path] |
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535 elif len(paths) > 1: |
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536 if self.changeset is None: |
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537 raise NodeError("Cannot access deeper " |
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538 "nodes without changeset") |
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539 else: |
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540 path1, path2 = paths[0], '/'.join(paths[1:]) |
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541 return self.get_node(path1).get_node(path2) |
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542 else: |
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543 raise KeyError |
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544 except KeyError: |
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545 raise NodeError("Node does not exist at %s" % path) |
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546 |
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547 @LazyProperty |
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548 def state(self): |
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549 raise NodeError("Cannot access state of DirNode") |
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550 |
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551 @LazyProperty |
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552 def size(self): |
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553 size = 0 |
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554 for root, dirs, files in self.changeset.walk(self.path): |
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555 for f in files: |
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556 size += f.size |
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557 |
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558 return size |
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559 |
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560 def __repr__(self): |
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561 return '<%s %r @ %s>' % (self.__class__.__name__, self.path, |
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562 getattr(self.changeset, 'short_id', '')) |
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563 |
2007
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564 |
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565 class RootNode(DirNode): |
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566 """ |
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567 DirNode being the root node of the repository. |
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568 """ |
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569 |
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570 def __init__(self, nodes=(), changeset=None): |
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571 super(RootNode, self).__init__(path='', nodes=nodes, |
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572 changeset=changeset) |
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573 |
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574 def __repr__(self): |
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575 return '<%s>' % self.__class__.__name__ |
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576 |
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577 |
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578 class SubModuleNode(Node): |
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579 """ |
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580 represents a SubModule of Git or SubRepo of Mercurial |
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581 """ |
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582 is_binary = False |
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583 size = 0 |
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584 |
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585 def __init__(self, name, url=None, changeset=None, alias=None): |
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586 self.path = name |
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587 self.kind = NodeKind.SUBMODULE |
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588 self.alias = alias |
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589 # we have to use emptyChangeset here since this can point to svn/git/hg |
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590 # submodules we cannot get from repository |
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591 self.changeset = EmptyChangeset(str(changeset), alias=alias) |
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592 self.url = url or self._extract_submodule_url() |
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593 |
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594 def __repr__(self): |
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595 return '<%s %r @ %s>' % (self.__class__.__name__, self.path, |
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596 getattr(self.changeset, 'short_id', '')) |
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597 |
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598 def _extract_submodule_url(self): |
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599 if self.alias == 'git': |
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600 #TODO: find a way to parse gits submodule file and extract the |
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601 # linking URL |
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602 return self.path |
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603 if self.alias == 'hg': |
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604 return self.path |
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605 |
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606 @LazyProperty |
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607 def name(self): |
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608 """ |
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609 Returns name of the node so if its path |
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610 then only last part is returned. |
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611 """ |
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612 org = safe_unicode(self.path.rstrip('/').split('/')[-1]) |
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613 return u'%s @ %s' % (org, self.changeset.short_id) |