Mercurial > hgsubversion
annotate svnwrap/svn_ctypes_wrapper.py @ 69:63ece4ea25c9
hg_delta_editor: register copies only if files are unchanged between source and dest
Handle copies of items from revision X into revision Y where X is not the
parent of Y. This cannot happen in Mercurial because copies always happen
between parents and children. A file copy is recorded if:
1- Source and destination revs are in the same branch.
2- The file is unchanged (content, type, removal) through all revisions between
destination and source, not including source and destination.
Directory copies are registered only if the previous rules apply on all copied
items.
[1] is there because file copies across branches are meaningless in Mercurial
world. We could have tried to remap the source rev to a similar one in the
correct branch, but anyway the intent is wrong.
[2] is more questionable but I think it's better this way for we live in a
non-perfect svn world. In theory, 99% of copies out there should come from the
direct parent. But the direct parent is a fuzzy notion when you can have a
working directory composed of different directory at different revisions. So we
assume that stuff copied from past revisions exactly matching the content of
the direct parent revision is really copied from the parent revision. The
alternative would be to discard the copy, which would always happen unless
people kept updating the working directory after every commit (see
tests).
author | Patrick Mezard <pmezard@gmail.com> |
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date | Wed, 05 Nov 2008 13:37:08 +0100 |
parents | f2636cfed115 |
children | e37f9d3fd5e7 |
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1 """Right now this is a dummy module, but it should wrap the ctypes API and |
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2 allow running this more easily without the SWIG bindings. |
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3 """ |
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4 from csvn import repos |
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5 |
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6 class Revision(object): |
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7 """Wrapper for a Subversion revision. |
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8 """ |
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9 def __init__(self, revnum, author, message, date, paths, strip_path=''): |
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10 self.revnum, self.author, self.message = revnum, author, message |
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11 # TODO parse this into a datetime |
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12 self.date = date |
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13 self.paths = {} |
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14 for p in paths: |
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15 self.paths[p[len(strip_path):]] = paths[p] |
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16 |
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17 def __str__(self): |
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18 return 'r%d by %s' % (self.revnum, self.author) |
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19 |
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20 |
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21 class SubversionRepo(object): |
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22 """Wrapper for a Subversion repository. |
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23 |
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24 This uses the SWIG Python bindings, and will only work on svn >= 1.4. |
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25 It takes a required param, the URL. |
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26 """ |
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27 def __init__(self, url=''): |
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28 self.svn_url = url |
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29 |
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30 self.init_ra_and_client() |
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31 self.uuid = ra.get_uuid(self.ra, self.pool) |
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32 repo_root = ra.get_repos_root(self.ra, self.pool) |
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33 # *will* have a leading '/', would not if we used get_repos_root2 |
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34 self.subdir = url[len(repo_root):] |
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35 if not self.subdir or self.subdir[-1] != '/': |
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36 self.subdir += '/' |
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37 |
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38 def init_ra_and_client(self): |
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39 # TODO(augie) need to figure out a way to do auth |
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40 self.repo = repos.RemoteRepository(self.svn_url) |
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41 |
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42 @property |
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43 def HEAD(self): |
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44 raise NotImplementedError |
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45 |
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46 @property |
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47 def START(self): |
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48 return 0 |
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49 |
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50 @property |
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51 def branches(self): |
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52 """Get the branches defined in this repo assuming a standard layout. |
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53 """ |
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54 raise NotImplementedError |
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55 |
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56 @property |
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57 def tags(self): |
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58 """Get the current tags in this repo assuming a standard layout. |
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59 |
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60 This returns a dictionary of tag: (source path, source rev) |
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61 """ |
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62 raise NotImplementedError |
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63 |
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64 def _get_copy_source(self, path, cached_head=None): |
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65 """Get copy revision for the given path, assuming it was meant to be |
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66 a copy of the entire tree. |
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67 """ |
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68 raise NotImplementedError |
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69 |
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70 def list_dir(self, dir, revision=None): |
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71 """List the contents of a server-side directory. |
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72 |
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73 Returns a dict-like object with one dict key per directory entry. |
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74 |
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75 Args: |
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76 dir: the directory to list, no leading slash |
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77 rev: the revision at which to list the directory, defaults to HEAD |
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78 """ |
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79 raise NotImplementedError |
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80 |
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81 def revisions(self, start=None, chunk_size=1000): |
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82 """Load the history of this repo. |
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83 |
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84 This is LAZY. It returns a generator, and fetches a small number |
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85 of revisions at a time. |
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86 |
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87 The reason this is lazy is so that you can use the same repo object |
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88 to perform RA calls to get deltas. |
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89 """ |
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90 # NB: you'd think this would work, but you'd be wrong. I'm pretty |
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91 # convinced there must be some kind of svn bug here. |
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92 #return self.fetch_history_at_paths(['tags', 'trunk', 'branches'], |
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93 # start=start) |
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94 # this does the same thing, but at the repo root + filtering. It's |
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95 # kind of tough cookies, sadly. |
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96 raise NotImplementedError |
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97 |
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98 |
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99 def fetch_history_at_paths(self, paths, start=None, stop=None, |
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100 chunk_size=1000): |
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101 raise NotImplementedError |
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102 |
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103 def get_replay(self, revision, editor, oldest_rev_i_have=0): |
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104 raise NotImplementedError |
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105 |
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106 def get_unified_diff(self, path, revision, deleted=True, ignore_type=False): |
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107 raise NotImplementedError |
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108 |
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109 def get_file(self, path, revision): |
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110 raise NotImplementedError |
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111 |
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112 def proplist(self, path, revision, recurse=False): |
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113 raise NotImplementedError |
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114 |
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115 def fetch_all_files_to_dir(self, path, revision, checkout_path): |
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116 raise NotImplementedError |
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117 |
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118 class SubversionRepoCanNotReplay(Exception): |
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119 """Exception raised when the svn server is too old to have replay. |
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120 """ |