Mercurial > hgsubversion

annotate svnwrap/svn_swig_wrapper.py @ 10:dfdc078661db

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author Augie Fackler <durin42@gmail.com>
date Mon, 06 Oct 2008 13:52:10 -0500
parents 9eb6bf2be1e7
children 2953c867ca99
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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 for p in paths:
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60 self.paths[p[len(strip_path):]] = paths[p]
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61
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62 def __str__(self):
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63 return 'r%d by %s' % (self.revnum, self.author)
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64
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65 class SubversionRepo(object):
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66 """Wrapper for a Subversion repository.
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67
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68 This uses the SWIG Python bindings, and will only work on svn >= 1.4.
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69 It takes a required param, the URL.
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70 """
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71 def __init__(self, url='', username=''):
0
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72 self.svn_url = url
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73 self.uname = username
0
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74 self.auth_baton_pool = core.Pool()
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75 self.auth_baton = _create_auth_baton(self.auth_baton_pool)
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76
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77 self.init_ra_and_client()
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78 self.uuid = ra.get_uuid(self.ra, self.pool)
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79 repo_root = ra.get_repos_root(self.ra, self.pool)
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80 # *will* have a leading '/', would not if we used get_repos_root2
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81 self.subdir = url[len(repo_root):]
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82 if not self.subdir or self.subdir[-1] != '/':
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83 self.subdir += '/'
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84
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85 def init_ra_and_client(self):
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86 """Initializes the RA and client layers, because sometimes getting
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87 unified diffs runs the remote server out of open files.
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88 """
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89 # while we're in here we'll recreate our pool
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90 self.pool = core.Pool()
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91 self.client_context = client.create_context()
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92 core.svn_auth_set_parameter(self.auth_baton,
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93 core.SVN_AUTH_PARAM_DEFAULT_USERNAME,
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94 self.uname)
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95
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96 self.client_context.auth_baton = self.auth_baton
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97 self.client_context.config = svn_config
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98 self.ra = client.open_ra_session(self.svn_url.encode('utf8'),
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99 self.client_context)
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100
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101
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102 @property
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103 def HEAD(self):
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104 return ra.get_latest_revnum(self.ra, self.pool)
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105
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106 @property
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107 def START(self):
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108 return 0
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109
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110 @property
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111 def branches(self):
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112 """Get the branches defined in this repo assuming a standard layout.
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113 """
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114 branches = self.list_dir('branches').keys()
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115 branch_info = {}
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116 head=self.HEAD
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117 for b in branches:
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118 b_path = 'branches/%s' %b
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119 hist_gen = self.fetch_history_at_paths([b_path], stop=head)
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120 hist = hist_gen.next()
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121 source, source_rev = self._get_copy_source(b_path, cached_head=head)
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122 # This if statement guards against projects that have non-ancestral
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123 # branches by not listing them has branches
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124 # Note that they probably are really ancestrally related, but there
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125 # is just no way for us to know how.
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126 if source is not None and source_rev is not None:
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127 branch_info[b] = (source, source_rev, hist.revnum)
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128 return branch_info
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129
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130 @property
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131 def tags(self):
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132 """Get the current tags in this repo assuming a standard layout.
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133
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134 This returns a dictionary of tag: (source path, source rev)
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135 """
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136 tags = self.list_dir('tags').keys()
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137 tag_info = {}
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138 head = self.HEAD
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139 for t in tags:
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140 tag_info[t] = self._get_copy_source('tags/%s' % t,
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141 cached_head=head)
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142 return tag_info
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143
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144 def _get_copy_source(self, path, cached_head=None):
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145 """Get copy revision for the given path, assuming it was meant to be
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146 a copy of the entire tree.
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147 """
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148 if not cached_head:
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149 cached_head = self.HEAD
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150 hist_gen = self.fetch_history_at_paths([path], stop=cached_head)
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151 hist = hist_gen.next()
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152 if hist.paths[path].copyfrom_path is None:
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153 return None, None
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154 source = hist.paths[path].copyfrom_path
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155 source_rev = 0
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156 for p in hist.paths:
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157 if hist.paths[p].copyfrom_rev:
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158 # We assume that the revision of the source tree as it was
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159 # copied was actually the revision of the highest revision
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160 # copied item. This could be wrong, but in practice it will
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161 # *probably* be correct
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162 if source_rev < hist.paths[p].copyfrom_rev:
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163 source_rev = hist.paths[p].copyfrom_rev
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164 source = source[len(self.subdir):]
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165 return source, source_rev
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166
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167 def list_dir(self, dir, revision=None):
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168 """List the contents of a server-side directory.
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169
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170 Returns a dict-like object with one dict key per directory entry.
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171
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172 Args:
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173 dir: the directory to list, no leading slash
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174 rev: the revision at which to list the directory, defaults to HEAD
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175 """
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176 if dir[-1] == '/':
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177 dir = dir[:-1]
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178 if revision is None:
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179 revision = self.HEAD
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180 r = ra.get_dir2(self.ra, dir, revision, core.SVN_DIRENT_KIND, self.pool)
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181 folders, props, junk = r
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182 return folders
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183
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184 def revisions(self, start=None, chunk_size=1000):
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185 """Load the history of this repo.
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186
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187 This is LAZY. It returns a generator, and fetches a small number
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188 of revisions at a time.
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189
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190 The reason this is lazy is so that you can use the same repo object
f2636cfed115 Initial import of hgsubversion into a public repository.
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191 to perform RA calls to get deltas.
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192 """
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193 # NB: you'd think this would work, but you'd be wrong. I'm pretty
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194 # convinced there must be some kind of svn bug here.
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195 #return self.fetch_history_at_paths(['tags', 'trunk', 'branches'],
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196 # start=start)
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197 # this does the same thing, but at the repo root + filtering. It's
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198 # kind of tough cookies, sadly.
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199 for r in self.fetch_history_at_paths([''], start=start,
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200 chunk_size=chunk_size):
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201 should_yield = False
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202 i = 0
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203 paths = list(r.paths.keys())
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204 while i < len(paths) and not should_yield:
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205 p = paths[i]
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206 if (p.startswith('trunk') or p.startswith('tags')
f2636cfed115 Initial import of hgsubversion into a public repository.
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207 or p.startswith('branches')):
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208 should_yield = True
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209 i += 1
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210 if should_yield:
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211 yield r
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212
f2636cfed115 Initial import of hgsubversion into a public repository.
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213
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214 def fetch_history_at_paths(self, paths, start=None, stop=None,
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215 chunk_size=1000):
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216 revisions = []
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217 def callback(paths, revnum, author, date, message, pool):
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218 r = Revision(revnum, author, message, date, paths,
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219 strip_path=self.subdir)
f2636cfed115 Initial import of hgsubversion into a public repository.
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220 revisions.append(r)
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221 if not start:
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222 start = self.START
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223 if not stop:
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224 stop = self.HEAD
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225 while stop > start:
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parents:
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226 ra.get_log(self.ra, paths,
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227 start+1,
f2636cfed115 Initial import of hgsubversion into a public repository.
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228 stop,
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229 chunk_size, #limit of how many log messages to load
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230 True, # don't need to know changed paths
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231 True, # stop on copies
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232 callback,
f2636cfed115 Initial import of hgsubversion into a public repository.
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233 self.pool)
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parents:
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234 if len(revisions) < chunk_size:
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parents:
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235 # this means there was no history for the path, so force the
f2636cfed115 Initial import of hgsubversion into a public repository.
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parents:
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236 # loop to exit
f2636cfed115 Initial import of hgsubversion into a public repository.
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237 start = stop
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parents:
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238 else:
f2636cfed115 Initial import of hgsubversion into a public repository.
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parents:
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239 start = revisions[-1].revnum
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parents:
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240 while len(revisions) > 0:
f2636cfed115 Initial import of hgsubversion into a public repository.
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parents:
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241 yield revisions[0]
f2636cfed115 Initial import of hgsubversion into a public repository.
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242 revisions.pop(0)
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243
10
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244 def commit(self, paths, message, file_data, base_revision, dirs,
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diff changeset
245 properties):
0
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246 """Commits the appropriate targets from revision in editor's store.
f2636cfed115 Initial import of hgsubversion into a public repository.
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parents:
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247 """
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248 self.init_ra_and_client()
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249 commit_info = []
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parents:
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250 def commit_cb(_commit_info, pool):
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251 commit_info.append(_commit_info)
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parents:
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252 editor, edit_baton = ra.get_commit_editor2(self.ra,
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253 message,
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254 commit_cb,
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255 None,
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256 False)
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257 checksum = []
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258 def driver_cb(parent, path, pool):
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259 if path in dirs:
9
9eb6bf2be1e7 Fix adding files that require new directories.
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260 return editor.add_directory(path, parent, None, -1, pool)
0
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261 base_text, new_text, action = file_data[path]
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262 compute_delta = True
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263 if action == 'modify':
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264 baton = editor.open_file(path, parent, base_revision, pool)
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265 elif action == 'add':
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266 try:
f2636cfed115 Initial import of hgsubversion into a public repository.
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267 baton = editor.add_file(path, parent, None, -1, pool)
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268 except (core.SubversionException, TypeError), e:
f2636cfed115 Initial import of hgsubversion into a public repository.
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269 print e.message
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270 raise
f2636cfed115 Initial import of hgsubversion into a public repository.
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271 elif action == 'delete':
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272 baton = editor.delete_entry(path, base_revision, parent, pool)
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273 compute_delta = False
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274
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275 if path in properties:
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276 if properties[path].get('svn:special', None):
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277 new_text = 'link %s' % new_text
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278 for p, v in properties[path].iteritems():
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279 editor.change_file_prop(baton, p, v)
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280
0
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281 if compute_delta:
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282 handler, wh_baton = editor.apply_textdelta(baton, None,
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283 self.pool)
f2636cfed115 Initial import of hgsubversion into a public repository.
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284
f2636cfed115 Initial import of hgsubversion into a public repository.
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285 txdelta_stream = delta.svn_txdelta(
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286 cStringIO.StringIO(base_text), cStringIO.StringIO(new_text),
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287 self.pool)
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288 delta.svn_txdelta_send_txstream(txdelta_stream, handler,
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289 wh_baton, pool)
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290
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291 delta.path_driver(editor, edit_baton, base_revision, paths, driver_cb,
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292 self.pool)
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293 editor.close_edit(edit_baton, self.pool)
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294
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295 def get_replay(self, revision, editor, oldest_rev_i_have=0):
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296 # this method has a tendency to chew through RAM if you don't re-init
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297 self.init_ra_and_client()
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298 e_ptr, e_baton = delta.make_editor(editor)
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299 try:
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300 ra.replay(self.ra, revision, oldest_rev_i_have, True, e_ptr,
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301 e_baton, self.pool)
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302 except core.SubversionException, e:
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303 # can I depend on this number being constant?
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304 if (e.message == "Server doesn't support the replay command"
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305 or e.apr_err == 170003):
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306 raise SubversionRepoCanNotReplay, ('This Subversion server '
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307 'is older than 1.4.0, and cannot satisfy replay requests.')
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308 else:
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309 raise
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310
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311 def get_unified_diff(self, path, revision, other_path=None, other_rev=None,
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312 deleted=True, ignore_type=False):
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313 """Gets a unidiff of path at revision against revision-1.
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314 """
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315 # works around an svn server keeping too many open files (observed
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316 # in an svnserve from the 1.2 era)
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317 self.init_ra_and_client()
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318
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319 old_cwd = os.getcwd()
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320 assert path[0] != '/'
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321 url = self.svn_url + '/' + path
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322 url2 = url
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323 if other_path is not None:
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324 url2 = self.svn_url + '/' + other_path
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325 if other_rev is None:
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326 other_rev = revision - 1
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327 tmpdir = tempfile.mkdtemp('svnwrap_temp')
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328 # hot tip: the swig bridge doesn't like StringIO for these bad boys
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329 out_path = os.path.join(tmpdir, 'diffout')
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330 error_path = os.path.join(tmpdir, 'differr')
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331 out = open(out_path, 'w')
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332 err = open(error_path, 'w')
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333 rev_old = core.svn_opt_revision_t()
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334 rev_old.kind = core.svn_opt_revision_number
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335 rev_old.value.number = other_rev
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336 rev_new = core.svn_opt_revision_t()
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337 rev_new.kind = core.svn_opt_revision_number
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338 rev_new.value.number = revision
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339 client.diff3([], url2, rev_old, url, rev_new, True, True,
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340 deleted, ignore_type, 'UTF-8', out, err,
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341 self.client_context, self.pool)
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342 out.close()
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343 err.close()
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344 assert len(open(error_path).read()) == 0
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345 diff = open(out_path).read()
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346 os.chdir(old_cwd)
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347 shutil.rmtree(tmpdir)
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348 return diff
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349
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350 def get_file(self, path, revision):
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351 out = cStringIO.StringIO()
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352 tmpdir = tempfile.mkdtemp('svnwrap_temp')
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353 # hot tip: the swig bridge doesn't like StringIO for these bad boys
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354 out_path = os.path.join(tmpdir, 'diffout')
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355 out = open(out_path, 'w')
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356 ra.get_file(self.ra, path,revision, out , None)
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357 out.close()
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358 x = open(out_path).read()
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359 shutil.rmtree(tmpdir)
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360 return x
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361
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362 def proplist(self, path, revision, recurse=False):
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363 rev = core.svn_opt_revision_t()
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364 rev.kind = core.svn_opt_revision_number
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365 rev.value.number = revision
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366 if path[-1] == '/':
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367 path = path[:-1]
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368 if path[0] == '/':
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369 path = path[1:]
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370 pl = dict(client.proplist2(self.svn_url+'/'+path, rev, rev, True,
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371 self.client_context, self.pool))
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372 pl2 = {}
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373 for key, value in pl.iteritems():
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374 pl2[key[len(self.svn_url)+1:]] = value
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375 return pl2
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376
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377 def fetch_all_files_to_dir(self, path, revision, checkout_path):
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378 rev = core.svn_opt_revision_t()
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379 rev.kind = core.svn_opt_revision_number
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380 rev.value.number = revision
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381 client.export3(self.svn_url+'/'+path, checkout_path, rev,
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382 rev, True, True, True, 'LF', # should be 'CRLF' on win32
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383 self.client_context, self.pool)
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parents:
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384
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385 class SubversionRepoCanNotReplay(Exception):
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386 """Exception raised when the svn server is too old to have replay.
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387 """