annotate hgext/parentrevspec.py @ 11148:a912f26777d3

merge: introduce tool.check parameter tool.check is a list of check options, and can be used in place of tool.checkchanged and tool.checkconflicts: Equivalences: tool.checkchanged = yes tool.checkconflicts = no tool.check = changed tool.checkchanged = no tool.checkconflicts = yes tool.check = conflicts tool.checkchanged = yes tool.checkconflicts = yes tool.check = changed, conflicts Add _toollist() wrapper for ui.configlist() to implement this consistently. checkchanged and checkconflicts are still supported, but check is preferred for implementing new check options.
author David Champion <dgc@uchicago.edu>
date Mon, 10 May 2010 11:04:56 -0500
parents 08a0f04b56bd
children
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1 # Mercurial extension to make it easy to refer to the parent of a revision
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2 #
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3 # Copyright (C) 2007 Alexis S. L. Carvalho <alexis@cecm.usp.br>
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4 #
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5 # This software may be used and distributed according to the terms of the
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6 # GNU General Public License version 2 or any later version.
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7
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8 '''interpret suffixes to refer to ancestor revisions
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9
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10 This extension allows you to use git-style suffixes to refer to the
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11 ancestors of a specific revision.
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12
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13 For example, if you can refer to a revision as "foo", then::
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14
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15 foo^N = Nth parent of foo
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16 foo^0 = foo
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17 foo^1 = first parent of foo
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18 foo^2 = second parent of foo
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19 foo^ = foo^1
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20
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21 foo~N = Nth first grandparent of foo
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22 foo~0 = foo
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23 foo~1 = foo^1 = foo^ = first parent of foo
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24 foo~2 = foo^1^1 = foo^^ = first parent of first parent of foo
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25 '''
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26 from mercurial import error
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27
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28 def reposetup(ui, repo):
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29 if not repo.local():
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30 return
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31
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32 class parentrevspecrepo(repo.__class__):
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33 def lookup(self, key):
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34 try:
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35 _super = super(parentrevspecrepo, self)
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36 return _super.lookup(key)
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37 except error.RepoError:
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38 pass
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39
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40 circ = key.find('^')
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41 tilde = key.find('~')
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42 if circ < 0 and tilde < 0:
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43 raise
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44 elif circ >= 0 and tilde >= 0:
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45 end = min(circ, tilde)
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46 else:
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47 end = max(circ, tilde)
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48
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49 cl = self.changelog
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50 base = key[:end]
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51 try:
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52 node = _super.lookup(base)
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53 except error.RepoError:
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54 # eek - reraise the first error
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55 return _super.lookup(key)
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56
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57 rev = cl.rev(node)
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58 suffix = key[end:]
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59 i = 0
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60 while i < len(suffix):
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61 # foo^N => Nth parent of foo
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62 # foo^0 == foo
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63 # foo^1 == foo^ == 1st parent of foo
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64 # foo^2 == 2nd parent of foo
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65 if suffix[i] == '^':
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66 j = i + 1
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67 p = cl.parentrevs(rev)
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68 if j < len(suffix) and suffix[j].isdigit():
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69 j += 1
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70 n = int(suffix[i + 1:j])
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71 if n > 2 or n == 2 and p[1] == -1:
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72 raise
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73 else:
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74 n = 1
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75 if n:
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76 rev = p[n - 1]
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77 i = j
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78 # foo~N => Nth first grandparent of foo
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79 # foo~0 = foo
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80 # foo~1 = foo^1 == foo^ == 1st parent of foo
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81 # foo~2 = foo^1^1 == foo^^ == 1st parent of 1st parent of foo
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82 elif suffix[i] == '~':
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83 j = i + 1
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84 while j < len(suffix) and suffix[j].isdigit():
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85 j += 1
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86 if j == i + 1:
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87 raise
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88 n = int(suffix[i + 1:j])
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89 for k in xrange(n):
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90 rev = cl.parentrevs(rev)[0]
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91 i = j
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92 else:
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93 raise
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94 return cl.node(rev)
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95
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96 repo.__class__ = parentrevspecrepo