Mercurial > hgsubversion

annotate svnwrap/svn_swig_wrapper.py @ 25:99f8e4b535e9

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
svn 1.4 and 1.5 have different ideas of diff output for prop changes.
author Augie Fackler <durin42@gmail.com>
date Thu, 09 Oct 2008 23:37:22 -0500
parents 2953c867ca99
children c4523e651325
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1 import cStringIO
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2 import getpass
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3 import os
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4 import shutil
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5 import sys
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6 import tempfile
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7
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8 from svn import client
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9 from svn import core
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10 from svn import delta
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11 from svn import ra
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12
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13 svn_config = core.svn_config_get_config(None)
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14
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15
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16 def user_pass_prompt(realm, default_username, ms, pool):
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17 creds = core.svn_auth_cred_simple_t()
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18 creds.may_save = ms
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19 if default_username:
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20 sys.stderr.write('Auth realm: %s\n' % (realm,))
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21 creds.username = default_username
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22 else:
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23 sys.stderr.write('Auth realm: %s\n' % (realm,))
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24 sys.stderr.write('Username: ')
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25 sys.stderr.flush()
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26 creds.username = sys.stdin.readline().strip()
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27 creds.password = getpass.getpass('Password for %s: ' % creds.username)
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28 return creds
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29
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30 def _create_auth_baton(pool):
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31 """Create a Subversion authentication baton. """
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32 # Give the client context baton a suite of authentication
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33 # providers.h
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34 providers = [
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35 client.get_simple_provider(),
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36 client.get_username_provider(),
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37 client.get_ssl_client_cert_file_provider(),
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38 client.get_ssl_client_cert_pw_file_provider(),
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39 client.get_ssl_server_trust_file_provider(),
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40 ]
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41 # Platform-dependant authentication methods
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42 if hasattr(client, 'get_windows_simple_provider'):
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43 providers.append(client.get_windows_simple_provider())
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44 if hasattr(client, 'get_keychain_simple_provider'):
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45 providers.append(client.get_keychain_simple_provider())
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46 providers.extend([client.get_simple_prompt_provider(user_pass_prompt, 2),
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47 ])
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48 return core.svn_auth_open(providers, pool)
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49
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50
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51 class Revision(object):
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52 """Wrapper for a Subversion revision.
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53 """
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54 def __init__(self, revnum, author, message, date, paths, strip_path=''):
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55 self.revnum, self.author, self.message = revnum, author, message
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56 # TODO parse this into a datetime
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57 self.date = date
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58 self.paths = {}
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59 if paths:
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60 for p in paths:
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61 self.paths[p[len(strip_path):]] = paths[p]
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62
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63 def __str__(self):
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64 return 'r%d by %s' % (self.revnum, self.author)
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65
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66 class SubversionRepo(object):
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67 """Wrapper for a Subversion repository.
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68
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69 This uses the SWIG Python bindings, and will only work on svn >= 1.4.
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70 It takes a required param, the URL.
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71 """
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72 def __init__(self, url='', username=''):
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73 self.svn_url = url
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74 self.uname = username
0
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75 self.auth_baton_pool = core.Pool()
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76 self.auth_baton = _create_auth_baton(self.auth_baton_pool)
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77
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78 self.init_ra_and_client()
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79 self.uuid = ra.get_uuid(self.ra, self.pool)
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80 repo_root = ra.get_repos_root(self.ra, self.pool)
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81 # *will* have a leading '/', would not if we used get_repos_root2
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82 self.subdir = url[len(repo_root):]
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83 if not self.subdir or self.subdir[-1] != '/':
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84 self.subdir += '/'
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85
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86 def init_ra_and_client(self):
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87 """Initializes the RA and client layers, because sometimes getting
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88 unified diffs runs the remote server out of open files.
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89 """
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90 # while we're in here we'll recreate our pool
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91 self.pool = core.Pool()
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92 self.client_context = client.create_context()
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93 core.svn_auth_set_parameter(self.auth_baton,
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94 core.SVN_AUTH_PARAM_DEFAULT_USERNAME,
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95 self.uname)
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96
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97 self.client_context.auth_baton = self.auth_baton
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98 self.client_context.config = svn_config
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99 self.ra = client.open_ra_session(self.svn_url.encode('utf8'),
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100 self.client_context)
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101
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102
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103 @property
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104 def HEAD(self):
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105 return ra.get_latest_revnum(self.ra, self.pool)
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106
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107 @property
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108 def START(self):
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109 return 0
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110
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111 @property
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112 def branches(self):
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113 """Get the branches defined in this repo assuming a standard layout.
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114 """
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115 branches = self.list_dir('branches').keys()
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116 branch_info = {}
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117 head=self.HEAD
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118 for b in branches:
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119 b_path = 'branches/%s' %b
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120 hist_gen = self.fetch_history_at_paths([b_path], stop=head)
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121 hist = hist_gen.next()
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122 source, source_rev = self._get_copy_source(b_path, cached_head=head)
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123 # This if statement guards against projects that have non-ancestral
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124 # branches by not listing them has branches
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125 # Note that they probably are really ancestrally related, but there
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126 # is just no way for us to know how.
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127 if source is not None and source_rev is not None:
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128 branch_info[b] = (source, source_rev, hist.revnum)
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129 return branch_info
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130
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131 @property
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132 def tags(self):
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133 """Get the current tags in this repo assuming a standard layout.
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134
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135 This returns a dictionary of tag: (source path, source rev)
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136 """
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137 tags = self.list_dir('tags').keys()
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138 tag_info = {}
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139 head = self.HEAD
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140 for t in tags:
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141 tag_info[t] = self._get_copy_source('tags/%s' % t,
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142 cached_head=head)
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143 return tag_info
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144
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145 def _get_copy_source(self, path, cached_head=None):
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146 """Get copy revision for the given path, assuming it was meant to be
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147 a copy of the entire tree.
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148 """
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149 if not cached_head:
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150 cached_head = self.HEAD
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151 hist_gen = self.fetch_history_at_paths([path], stop=cached_head)
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152 hist = hist_gen.next()
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153 if hist.paths[path].copyfrom_path is None:
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154 return None, None
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155 source = hist.paths[path].copyfrom_path
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156 source_rev = 0
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157 for p in hist.paths:
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158 if hist.paths[p].copyfrom_rev:
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159 # We assume that the revision of the source tree as it was
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160 # copied was actually the revision of the highest revision
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161 # copied item. This could be wrong, but in practice it will
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162 # *probably* be correct
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163 if source_rev < hist.paths[p].copyfrom_rev:
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164 source_rev = hist.paths[p].copyfrom_rev
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165 source = source[len(self.subdir):]
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166 return source, source_rev
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167
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168 def list_dir(self, dir, revision=None):
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169 """List the contents of a server-side directory.
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170
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171 Returns a dict-like object with one dict key per directory entry.
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172
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173 Args:
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174 dir: the directory to list, no leading slash
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175 rev: the revision at which to list the directory, defaults to HEAD
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176 """
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177 if dir[-1] == '/':
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178 dir = dir[:-1]
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179 if revision is None:
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180 revision = self.HEAD
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181 r = ra.get_dir2(self.ra, dir, revision, core.SVN_DIRENT_KIND, self.pool)
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182 folders, props, junk = r
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183 return folders
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184
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185 def revisions(self, start=None, chunk_size=1000):
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186 """Load the history of this repo.
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187
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188 This is LAZY. It returns a generator, and fetches a small number
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189 of revisions at a time.
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190
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191 The reason this is lazy is so that you can use the same repo object
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192 to perform RA calls to get deltas.
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193 """
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194 # NB: you'd think this would work, but you'd be wrong. I'm pretty
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195 # convinced there must be some kind of svn bug here.
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196 #return self.fetch_history_at_paths(['tags', 'trunk', 'branches'],
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197 # start=start)
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198 # this does the same thing, but at the repo root + filtering. It's
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199 # kind of tough cookies, sadly.
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200 for r in self.fetch_history_at_paths([''], start=start,
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201 chunk_size=chunk_size):
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202 should_yield = False
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203 i = 0
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204 paths = list(r.paths.keys())
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205 while i < len(paths) and not should_yield:
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206 p = paths[i]
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207 if (p.startswith('trunk') or p.startswith('tags')
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208 or p.startswith('branches')):
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209 should_yield = True
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210 i += 1
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211 if should_yield:
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212 yield r
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213
f2636cfed115 Initial import of hgsubversion into a public repository.
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214
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215 def fetch_history_at_paths(self, paths, start=None, stop=None,
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216 chunk_size=1000):
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217 revisions = []
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218 def callback(paths, revnum, author, date, message, pool):
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219 r = Revision(revnum, author, message, date, paths,
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220 strip_path=self.subdir)
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221 revisions.append(r)
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222 if not start:
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223 start = self.START
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224 if not stop:
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225 stop = self.HEAD
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226 while stop > start:
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227 ra.get_log(self.ra, paths,
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228 start+1,
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229 stop,
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230 chunk_size, #limit of how many log messages to load
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231 True, # don't need to know changed paths
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232 True, # stop on copies
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233 callback,
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234 self.pool)
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235 if len(revisions) < chunk_size:
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236 # this means there was no history for the path, so force the
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237 # loop to exit
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238 start = stop
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239 else:
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240 start = revisions[-1].revnum
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241 while len(revisions) > 0:
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242 yield revisions[0]
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243 revisions.pop(0)
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244
10
dfdc078661db Auto-set executable, symlink, and auto-props.
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245 def commit(self, paths, message, file_data, base_revision, dirs,
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diff changeset
246 properties):
0
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247 """Commits the appropriate targets from revision in editor's store.
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248 """
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249 self.init_ra_and_client()
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250 commit_info = []
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251 def commit_cb(_commit_info, pool):
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252 commit_info.append(_commit_info)
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253 editor, edit_baton = ra.get_commit_editor2(self.ra,
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254 message,
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255 commit_cb,
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256 None,
20
2953c867ca99 Minor fixes to the push command to make it more robust.
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257 False,
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258 self.pool)
0
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259 checksum = []
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260 def driver_cb(parent, path, pool):
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261 if path in dirs:
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9eb6bf2be1e7 Fix adding files that require new directories.
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262 return editor.add_directory(path, parent, None, -1, pool)
0
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263 base_text, new_text, action = file_data[path]
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264 compute_delta = True
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265 if action == 'modify':
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266 baton = editor.open_file(path, parent, base_revision, pool)
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267 elif action == 'add':
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268 try:
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269 baton = editor.add_file(path, parent, None, -1, pool)
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270 except (core.SubversionException, TypeError), e:
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271 print e.message
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272 raise
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273 elif action == 'delete':
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274 baton = editor.delete_entry(path, base_revision, parent, pool)
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275 compute_delta = False
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276
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277 if path in properties:
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278 if properties[path].get('svn:special', None):
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279 new_text = 'link %s' % new_text
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280 for p, v in properties[path].iteritems():
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281 editor.change_file_prop(baton, p, v)
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282
0
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283 if compute_delta:
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284 handler, wh_baton = editor.apply_textdelta(baton, None,
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285 self.pool)
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286
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287 txdelta_stream = delta.svn_txdelta(
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288 cStringIO.StringIO(base_text), cStringIO.StringIO(new_text),
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289 self.pool)
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290 delta.svn_txdelta_send_txstream(txdelta_stream, handler,
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291 wh_baton, pool)
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292
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293 delta.path_driver(editor, edit_baton, base_revision, paths, driver_cb,
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294 self.pool)
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295 editor.close_edit(edit_baton, self.pool)
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296
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297 def get_replay(self, revision, editor, oldest_rev_i_have=0):
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298 # this method has a tendency to chew through RAM if you don't re-init
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299 self.init_ra_and_client()
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300 e_ptr, e_baton = delta.make_editor(editor)
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301 try:
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302 ra.replay(self.ra, revision, oldest_rev_i_have, True, e_ptr,
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303 e_baton, self.pool)
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304 except core.SubversionException, e:
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305 # can I depend on this number being constant?
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306 if (e.message == "Server doesn't support the replay command"
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307 or e.apr_err == 170003):
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308 raise SubversionRepoCanNotReplay, ('This Subversion server '
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309 'is older than 1.4.0, and cannot satisfy replay requests.')
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310 else:
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311 raise
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312
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313 def get_unified_diff(self, path, revision, other_path=None, other_rev=None,
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314 deleted=True, ignore_type=False):
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315 """Gets a unidiff of path at revision against revision-1.
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316 """
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317 # works around an svn server keeping too many open files (observed
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318 # in an svnserve from the 1.2 era)
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319 self.init_ra_and_client()
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320
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321 old_cwd = os.getcwd()
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322 assert path[0] != '/'
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323 url = self.svn_url + '/' + path
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324 url2 = url
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325 if other_path is not None:
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326 url2 = self.svn_url + '/' + other_path
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327 if other_rev is None:
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328 other_rev = revision - 1
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329 tmpdir = tempfile.mkdtemp('svnwrap_temp')
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330 # hot tip: the swig bridge doesn't like StringIO for these bad boys
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331 out_path = os.path.join(tmpdir, 'diffout')
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332 error_path = os.path.join(tmpdir, 'differr')
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333 out = open(out_path, 'w')
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334 err = open(error_path, 'w')
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335 rev_old = core.svn_opt_revision_t()
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336 rev_old.kind = core.svn_opt_revision_number
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337 rev_old.value.number = other_rev
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338 rev_new = core.svn_opt_revision_t()
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339 rev_new.kind = core.svn_opt_revision_number
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340 rev_new.value.number = revision
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341 client.diff3([], url2, rev_old, url, rev_new, True, True,
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342 deleted, ignore_type, 'UTF-8', out, err,
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343 self.client_context, self.pool)
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344 out.close()
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345 err.close()
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346 assert len(open(error_path).read()) == 0
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347 diff = open(out_path).read()
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348 os.chdir(old_cwd)
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349 shutil.rmtree(tmpdir)
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350 return diff
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351
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352 def get_file(self, path, revision):
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353 out = cStringIO.StringIO()
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354 tmpdir = tempfile.mkdtemp('svnwrap_temp')
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355 # hot tip: the swig bridge doesn't like StringIO for these bad boys
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356 out_path = os.path.join(tmpdir, 'diffout')
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357 out = open(out_path, 'w')
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358 ra.get_file(self.ra, path,revision, out , None)
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359 out.close()
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360 x = open(out_path).read()
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361 shutil.rmtree(tmpdir)
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362 return x
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363
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364 def proplist(self, path, revision, recurse=False):
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365 rev = core.svn_opt_revision_t()
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366 rev.kind = core.svn_opt_revision_number
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367 rev.value.number = revision
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368 if path[-1] == '/':
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369 path = path[:-1]
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370 if path[0] == '/':
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371 path = path[1:]
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372 pl = dict(client.proplist2(self.svn_url+'/'+path, rev, rev, True,
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373 self.client_context, self.pool))
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parents:
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374 pl2 = {}
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375 for key, value in pl.iteritems():
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376 pl2[key[len(self.svn_url)+1:]] = value
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377 return pl2
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378
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379 def fetch_all_files_to_dir(self, path, revision, checkout_path):
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380 rev = core.svn_opt_revision_t()
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381 rev.kind = core.svn_opt_revision_number
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382 rev.value.number = revision
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383 client.export3(self.svn_url+'/'+path, checkout_path, rev,
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parents:
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384 rev, True, True, True, 'LF', # should be 'CRLF' on win32
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385 self.client_context, self.pool)
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parents:
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386
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387 class SubversionRepoCanNotReplay(Exception):
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388 """Exception raised when the svn server is too old to have replay.
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389 """