Mercurial > hgsubversion

annotate svnwrap/svn_swig_wrapper.py @ 42:485ae93bc358

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author Augie Fackler <durin42@gmail.com>
date Sun, 26 Oct 2008 22:43:01 -0500
parents c4523e651325
children ce00e6ffaa90
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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'):
36
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43 try:
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44 providers.append(client.get_windows_simple_provider())
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45 except:
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46 pass
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47 if hasattr(client, 'get_keychain_simple_provider'):
36
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48 try:
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49 providers.append(client.get_keychain_simple_provider())
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50 except:
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51 pass
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52 providers.extend([client.get_simple_prompt_provider(user_pass_prompt, 2),
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53 ])
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54 return core.svn_auth_open(providers, pool)
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55
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56
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57 class Revision(object):
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58 """Wrapper for a Subversion revision.
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59 """
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60 def __init__(self, revnum, author, message, date, paths, strip_path=''):
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61 self.revnum, self.author, self.message = revnum, author, message
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62 # TODO parse this into a datetime
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63 self.date = date
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64 self.paths = {}
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65 if paths:
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66 for p in paths:
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67 self.paths[p[len(strip_path):]] = paths[p]
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68
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69 def __str__(self):
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70 return 'r%d by %s' % (self.revnum, self.author)
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71
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72 class SubversionRepo(object):
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73 """Wrapper for a Subversion repository.
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74
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75 This uses the SWIG Python bindings, and will only work on svn >= 1.4.
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76 It takes a required param, the URL.
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77 """
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78 def __init__(self, url='', username=''):
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79 self.svn_url = url
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80 self.uname = username
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81 self.auth_baton_pool = core.Pool()
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82 self.auth_baton = _create_auth_baton(self.auth_baton_pool)
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83
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84 self.init_ra_and_client()
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85 self.uuid = ra.get_uuid(self.ra, self.pool)
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86 repo_root = ra.get_repos_root(self.ra, self.pool)
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87 # *will* have a leading '/', would not if we used get_repos_root2
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88 self.subdir = url[len(repo_root):]
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89 if not self.subdir or self.subdir[-1] != '/':
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90 self.subdir += '/'
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91
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92 def init_ra_and_client(self):
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93 """Initializes the RA and client layers, because sometimes getting
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94 unified diffs runs the remote server out of open files.
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95 """
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96 # while we're in here we'll recreate our pool
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97 self.pool = core.Pool()
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98 self.client_context = client.create_context()
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99 core.svn_auth_set_parameter(self.auth_baton,
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100 core.SVN_AUTH_PARAM_DEFAULT_USERNAME,
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101 self.uname)
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102
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103 self.client_context.auth_baton = self.auth_baton
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104 self.client_context.config = svn_config
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105 self.ra = client.open_ra_session(self.svn_url.encode('utf8'),
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106 self.client_context)
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107
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108
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109 @property
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110 def HEAD(self):
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111 return ra.get_latest_revnum(self.ra, self.pool)
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112
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113 @property
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114 def START(self):
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115 return 0
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116
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117 @property
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118 def branches(self):
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119 """Get the branches defined in this repo assuming a standard layout.
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120 """
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121 branches = self.list_dir('branches').keys()
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122 branch_info = {}
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123 head=self.HEAD
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124 for b in branches:
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125 b_path = 'branches/%s' %b
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126 hist_gen = self.fetch_history_at_paths([b_path], stop=head)
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127 hist = hist_gen.next()
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128 source, source_rev = self._get_copy_source(b_path, cached_head=head)
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129 # This if statement guards against projects that have non-ancestral
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130 # branches by not listing them has branches
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131 # Note that they probably are really ancestrally related, but there
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132 # is just no way for us to know how.
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133 if source is not None and source_rev is not None:
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134 branch_info[b] = (source, source_rev, hist.revnum)
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135 return branch_info
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136
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137 @property
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138 def tags(self):
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139 """Get the current tags in this repo assuming a standard layout.
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140
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141 This returns a dictionary of tag: (source path, source rev)
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142 """
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143 tags = self.list_dir('tags').keys()
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144 tag_info = {}
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145 head = self.HEAD
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146 for t in tags:
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147 tag_info[t] = self._get_copy_source('tags/%s' % t,
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148 cached_head=head)
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149 return tag_info
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150
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151 def _get_copy_source(self, path, cached_head=None):
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152 """Get copy revision for the given path, assuming it was meant to be
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153 a copy of the entire tree.
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154 """
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155 if not cached_head:
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156 cached_head = self.HEAD
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157 hist_gen = self.fetch_history_at_paths([path], stop=cached_head)
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158 hist = hist_gen.next()
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159 if hist.paths[path].copyfrom_path is None:
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160 return None, None
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161 source = hist.paths[path].copyfrom_path
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162 source_rev = 0
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163 for p in hist.paths:
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164 if hist.paths[p].copyfrom_rev:
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165 # We assume that the revision of the source tree as it was
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166 # copied was actually the revision of the highest revision
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167 # copied item. This could be wrong, but in practice it will
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168 # *probably* be correct
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169 if source_rev < hist.paths[p].copyfrom_rev:
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170 source_rev = hist.paths[p].copyfrom_rev
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171 source = source[len(self.subdir):]
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172 return source, source_rev
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173
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174 def list_dir(self, dir, revision=None):
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175 """List the contents of a server-side directory.
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176
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177 Returns a dict-like object with one dict key per directory entry.
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178
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179 Args:
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180 dir: the directory to list, no leading slash
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181 rev: the revision at which to list the directory, defaults to HEAD
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182 """
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183 if dir[-1] == '/':
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184 dir = dir[:-1]
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185 if revision is None:
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186 revision = self.HEAD
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187 r = ra.get_dir2(self.ra, dir, revision, core.SVN_DIRENT_KIND, self.pool)
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188 folders, props, junk = r
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189 return folders
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190
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191 def revisions(self, start=None, chunk_size=1000):
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192 """Load the history of this repo.
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193
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194 This is LAZY. It returns a generator, and fetches a small number
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195 of revisions at a time.
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196
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197 The reason this is lazy is so that you can use the same repo object
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198 to perform RA calls to get deltas.
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199 """
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200 # NB: you'd think this would work, but you'd be wrong. I'm pretty
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201 # convinced there must be some kind of svn bug here.
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202 #return self.fetch_history_at_paths(['tags', 'trunk', 'branches'],
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203 # start=start)
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204 # this does the same thing, but at the repo root + filtering. It's
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205 # kind of tough cookies, sadly.
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206 for r in self.fetch_history_at_paths([''], start=start,
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207 chunk_size=chunk_size):
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208 should_yield = False
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209 i = 0
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210 paths = list(r.paths.keys())
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211 while i < len(paths) and not should_yield:
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212 p = paths[i]
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213 if (p.startswith('trunk') or p.startswith('tags')
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214 or p.startswith('branches')):
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215 should_yield = True
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216 i += 1
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217 if should_yield:
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218 yield r
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219
f2636cfed115 Initial import of hgsubversion into a public repository.
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220
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221 def fetch_history_at_paths(self, paths, start=None, stop=None,
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222 chunk_size=1000):
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223 revisions = []
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224 def callback(paths, revnum, author, date, message, pool):
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225 r = Revision(revnum, author, message, date, paths,
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226 strip_path=self.subdir)
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227 revisions.append(r)
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228 if not start:
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229 start = self.START
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230 if not stop:
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231 stop = self.HEAD
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232 while stop > start:
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233 ra.get_log(self.ra, paths,
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234 start+1,
f2636cfed115 Initial import of hgsubversion into a public repository.
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235 stop,
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236 chunk_size, #limit of how many log messages to load
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237 True, # don't need to know changed paths
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238 True, # stop on copies
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239 callback,
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240 self.pool)
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241 if len(revisions) < chunk_size:
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242 # this means there was no history for the path, so force the
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243 # loop to exit
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244 start = stop
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245 else:
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246 start = revisions[-1].revnum
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247 while len(revisions) > 0:
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248 yield revisions[0]
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249 revisions.pop(0)
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250
10
dfdc078661db Auto-set executable, symlink, and auto-props.
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251 def commit(self, paths, message, file_data, base_revision, dirs,
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diff changeset
252 properties):
0
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253 """Commits the appropriate targets from revision in editor's store.
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254 """
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255 self.init_ra_and_client()
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256 commit_info = []
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257 def commit_cb(_commit_info, pool):
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258 commit_info.append(_commit_info)
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parents:
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259 editor, edit_baton = ra.get_commit_editor2(self.ra,
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260 message,
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261 commit_cb,
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262 None,
20
2953c867ca99 Minor fixes to the push command to make it more robust.
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263 False,
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264 self.pool)
0
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265 checksum = []
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266 def driver_cb(parent, path, pool):
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267 if path in dirs:
9
9eb6bf2be1e7 Fix adding files that require new directories.
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268 return editor.add_directory(path, parent, None, -1, pool)
0
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269 base_text, new_text, action = file_data[path]
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270 compute_delta = True
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271 if action == 'modify':
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272 baton = editor.open_file(path, parent, base_revision, pool)
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273 elif action == 'add':
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274 try:
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275 baton = editor.add_file(path, parent, None, -1, pool)
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276 except (core.SubversionException, TypeError), e:
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277 print e.message
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278 raise
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279 elif action == 'delete':
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280 baton = editor.delete_entry(path, base_revision, parent, pool)
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281 compute_delta = False
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282
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283 if path in properties:
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284 if properties[path].get('svn:special', None):
dfdc078661db Auto-set executable, symlink, and auto-props.
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diff changeset
285 new_text = 'link %s' % new_text
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286 for p, v in properties[path].iteritems():
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287 editor.change_file_prop(baton, p, v)
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288
0
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289 if compute_delta:
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290 handler, wh_baton = editor.apply_textdelta(baton, None,
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291 self.pool)
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292
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293 txdelta_stream = delta.svn_txdelta(
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294 cStringIO.StringIO(base_text), cStringIO.StringIO(new_text),
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295 self.pool)
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296 delta.svn_txdelta_send_txstream(txdelta_stream, handler,
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297 wh_baton, pool)
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298
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299 delta.path_driver(editor, edit_baton, base_revision, paths, driver_cb,
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300 self.pool)
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301 editor.close_edit(edit_baton, self.pool)
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302
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303 def get_replay(self, revision, editor, oldest_rev_i_have=0):
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304 # this method has a tendency to chew through RAM if you don't re-init
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305 self.init_ra_and_client()
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306 e_ptr, e_baton = delta.make_editor(editor)
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307 try:
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308 ra.replay(self.ra, revision, oldest_rev_i_have, True, e_ptr,
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309 e_baton, self.pool)
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310 except core.SubversionException, e:
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311 # can I depend on this number being constant?
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312 if (e.message == "Server doesn't support the replay command"
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313 or e.apr_err == 170003):
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314 raise SubversionRepoCanNotReplay, ('This Subversion server '
f2636cfed115 Initial import of hgsubversion into a public repository.
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315 'is older than 1.4.0, and cannot satisfy replay requests.')
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316 else:
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317 raise
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318
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319 def get_unified_diff(self, path, revision, other_path=None, other_rev=None,
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320 deleted=True, ignore_type=False):
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321 """Gets a unidiff of path at revision against revision-1.
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322 """
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323 # works around an svn server keeping too many open files (observed
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324 # in an svnserve from the 1.2 era)
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325 self.init_ra_and_client()
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326
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327 old_cwd = os.getcwd()
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328 assert path[0] != '/'
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329 url = self.svn_url + '/' + path
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330 url2 = url
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331 if other_path is not None:
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332 url2 = self.svn_url + '/' + other_path
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333 if other_rev is None:
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334 other_rev = revision - 1
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335 tmpdir = tempfile.mkdtemp('svnwrap_temp')
f2636cfed115 Initial import of hgsubversion into a public repository.
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336 # hot tip: the swig bridge doesn't like StringIO for these bad boys
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337 out_path = os.path.join(tmpdir, 'diffout')
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338 error_path = os.path.join(tmpdir, 'differr')
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339 out = open(out_path, 'w')
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340 err = open(error_path, 'w')
f2636cfed115 Initial import of hgsubversion into a public repository.
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341 rev_old = core.svn_opt_revision_t()
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342 rev_old.kind = core.svn_opt_revision_number
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343 rev_old.value.number = other_rev
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344 rev_new = core.svn_opt_revision_t()
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345 rev_new.kind = core.svn_opt_revision_number
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346 rev_new.value.number = revision
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347 client.diff3([], url2, rev_old, url, rev_new, True, True,
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348 deleted, ignore_type, 'UTF-8', out, err,
f2636cfed115 Initial import of hgsubversion into a public repository.
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349 self.client_context, self.pool)
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350 out.close()
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351 err.close()
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352 assert len(open(error_path).read()) == 0
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353 diff = open(out_path).read()
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354 os.chdir(old_cwd)
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355 shutil.rmtree(tmpdir)
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356 return diff
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357
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358 def get_file(self, path, revision):
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359 out = cStringIO.StringIO()
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360 tmpdir = tempfile.mkdtemp('svnwrap_temp')
f2636cfed115 Initial import of hgsubversion into a public repository.
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parents:
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361 # hot tip: the swig bridge doesn't like StringIO for these bad boys
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362 out_path = os.path.join(tmpdir, 'diffout')
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363 out = open(out_path, 'w')
f2636cfed115 Initial import of hgsubversion into a public repository.
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parents:
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364 ra.get_file(self.ra, path,revision, out , None)
f2636cfed115 Initial import of hgsubversion into a public repository.
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365 out.close()
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parents:
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366 x = open(out_path).read()
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367 shutil.rmtree(tmpdir)
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368 return x
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parents:
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369
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parents:
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370 def proplist(self, path, revision, recurse=False):
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371 rev = core.svn_opt_revision_t()
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parents:
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372 rev.kind = core.svn_opt_revision_number
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parents:
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373 rev.value.number = revision
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parents:
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374 if path[-1] == '/':
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375 path = path[:-1]
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parents:
diff changeset
376 if path[0] == '/':
f2636cfed115 Initial import of hgsubversion into a public repository.
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parents:
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377 path = path[1:]
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parents:
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378 pl = dict(client.proplist2(self.svn_url+'/'+path, rev, rev, True,
f2636cfed115 Initial import of hgsubversion into a public repository.
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parents:
diff changeset
379 self.client_context, self.pool))
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parents:
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380 pl2 = {}
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parents:
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381 for key, value in pl.iteritems():
f2636cfed115 Initial import of hgsubversion into a public repository.
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parents:
diff changeset
382 pl2[key[len(self.svn_url)+1:]] = value
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parents:
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383 return pl2
f2636cfed115 Initial import of hgsubversion into a public repository.
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parents:
diff changeset
384
f2636cfed115 Initial import of hgsubversion into a public repository.
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parents:
diff changeset
385 def fetch_all_files_to_dir(self, path, revision, checkout_path):
f2636cfed115 Initial import of hgsubversion into a public repository.
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parents:
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386 rev = core.svn_opt_revision_t()
f2636cfed115 Initial import of hgsubversion into a public repository.
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parents:
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387 rev.kind = core.svn_opt_revision_number
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parents:
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388 rev.value.number = revision
f2636cfed115 Initial import of hgsubversion into a public repository.
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parents:
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389 client.export3(self.svn_url+'/'+path, checkout_path, rev,
f2636cfed115 Initial import of hgsubversion into a public repository.
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parents:
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390 rev, True, True, True, 'LF', # should be 'CRLF' on win32
f2636cfed115 Initial import of hgsubversion into a public repository.
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parents:
diff changeset
391 self.client_context, self.pool)
f2636cfed115 Initial import of hgsubversion into a public repository.
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parents:
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392
f2636cfed115 Initial import of hgsubversion into a public repository.
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parents:
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393 class SubversionRepoCanNotReplay(Exception):
f2636cfed115 Initial import of hgsubversion into a public repository.
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parents:
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394 """Exception raised when the svn server is too old to have replay.
f2636cfed115 Initial import of hgsubversion into a public repository.
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parents:
diff changeset
395 """