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annotate mercurial/extensions.py @ 5909:f45f7390c1c5

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strip: calculate list of extra nodes to save and pass it to changegroupsubset When we remove revision N from the repository, all revisions >= N are affected: either it's a descendant from N and will also be removed, or it's not a descendant of N and will be renumbered. As a consequence, we have to (at least temporarily) remove all filelog and manifest revisions that have a linkrev >= N, readding some of them later. Unfortunately, it's possible to have a revlog with two revisions r1 and r2 such that r1 < r2, but linkrev(r1) > linkrev(r2). If we try to strip revision linkrev(r1) from the repository, we'll also lose revision r2 when we truncate this revlog. We already use changegroupsubset to create a temporary changegroup containing the revisions that have to be restored, but that function is unable to detect that we also wanted to save the r2 in the case above. So we manually calculate these extra nodes and pass it to changegroupsubset. This should fix issue764.
author Alexis S. L. Carvalho <alexis@cecm.usp.br>
date Sat, 19 Jan 2008 18:01:16 -0200
parents b12432b1c2c7
children f8a86ea7521b
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1 # extensions.py - extension handling for mercurial
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2 #
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3 # Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
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4 #
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5 # This software may be used and distributed according to the terms
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6 # of the GNU General Public License, incorporated herein by reference.
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7
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8 import imp, os
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9 import util, sys
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10 from i18n import _
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11
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12 _extensions = {}
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13 _order = []
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14
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15 def extensions():
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16 for name in _order:
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17 module = _extensions[name]
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18 if module:
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19 yield name, module
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20
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21 def find(name):
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22 '''return module with given extension name'''
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23 try:
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24 return _extensions[name]
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25 except KeyError:
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26 for k, v in _extensions.iteritems():
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27 if k.endswith('.' + name) or k.endswith('/' + name):
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28 return v
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29 raise KeyError(name)
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30
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31 def load(ui, name, path):
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32 if name.startswith('hgext.'):
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33 shortname = name[6:]
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34 else:
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35 shortname = name
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36 if shortname in _extensions:
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37 return
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38 _extensions[shortname] = None
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39 if path:
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40 # the module will be loaded in sys.modules
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41 # choose an unique name so that it doesn't
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42 # conflicts with other modules
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43 module_name = "hgext_%s" % name.replace('.', '_')
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44 if os.path.isdir(path):
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45 # module/__init__.py style
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46 d, f = os.path.split(path)
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47 fd, fpath, desc = imp.find_module(f, [d])
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48 mod = imp.load_module(module_name, fd, fpath, desc)
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49 else:
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50 mod = imp.load_source(module_name, path)
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51 else:
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52 def importh(name):
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53 mod = __import__(name)
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54 components = name.split('.')
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55 for comp in components[1:]:
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56 mod = getattr(mod, comp)
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57 return mod
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58 try:
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59 mod = importh("hgext.%s" % name)
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60 except ImportError:
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61 mod = importh(name)
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62 _extensions[shortname] = mod
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63 _order.append(shortname)
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64
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65 uisetup = getattr(mod, 'uisetup', None)
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66 if uisetup:
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67 uisetup(ui)
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68
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69 def loadall(ui):
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70 result = ui.configitems("extensions")
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71 for i, (name, path) in enumerate(result):
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72 if path:
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73 if path[0] == '!':
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74 continue
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75 path = os.path.expanduser(path)
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76 try:
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77 load(ui, name, path)
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78 except (util.SignalInterrupt, KeyboardInterrupt):
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79 raise
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80 except Exception, inst:
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81 ui.warn(_("*** failed to import extension %s: %s\n") %
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82 (name, inst))
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83 if ui.print_exc():
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84 return 1
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85