Mercurial > hg
annotate mercurial/rewriteutil.py @ 46413:ed43b6fa847e stable
copyright: update to 2021
Differential Revision: https://phab.mercurial-scm.org/D9885
author | Matt Harbison <matt_harbison@yahoo.com> |
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date | Wed, 27 Jan 2021 00:54:57 -0500 |
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1 # rewriteutil.py - utility functions for rewriting changesets |
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2 # |
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3 # Copyright 2017 Octobus <contact@octobus.net> |
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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 from __future__ import absolute_import |
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9 |
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10 import re |
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11 |
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12 from .i18n import _ |
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13 from .node import ( |
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14 hex, |
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15 nullrev, |
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16 ) |
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17 |
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18 from . import ( |
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19 error, |
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20 obsolete, |
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21 obsutil, |
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22 revset, |
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23 scmutil, |
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24 ) |
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25 |
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26 |
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27 NODE_RE = re.compile(br'\b[0-9a-f]{6,64}\b') |
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28 |
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29 |
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30 def precheck(repo, revs, action=b'rewrite'): |
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31 """check if revs can be rewritten |
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32 action is used to control the error message. |
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33 |
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34 Make sure this function is called after taking the lock. |
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35 """ |
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36 if nullrev in revs: |
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37 msg = _(b"cannot %s null changeset") % action |
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38 hint = _(b"no changeset checked out") |
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39 raise error.InputError(msg, hint=hint) |
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40 |
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41 if len(repo[None].parents()) > 1: |
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42 raise error.StateError(_(b"cannot %s while merging") % action) |
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43 |
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44 publicrevs = repo.revs(b'%ld and public()', revs) |
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45 if publicrevs: |
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46 msg = _(b"cannot %s public changesets") % action |
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47 hint = _(b"see 'hg help phases' for details") |
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48 raise error.InputError(msg, hint=hint) |
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49 |
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50 newunstable = disallowednewunstable(repo, revs) |
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51 if newunstable: |
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52 raise error.InputError(_(b"cannot %s changeset with children") % action) |
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53 |
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54 |
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55 def disallowednewunstable(repo, revs): |
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56 """Checks whether editing the revs will create new unstable changesets and |
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57 are we allowed to create them. |
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58 |
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59 To allow new unstable changesets, set the config: |
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60 `experimental.evolution.allowunstable=True` |
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61 """ |
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62 allowunstable = obsolete.isenabled(repo, obsolete.allowunstableopt) |
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63 if allowunstable: |
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64 return revset.baseset() |
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65 return repo.revs(b"(%ld::) - %ld", revs, revs) |
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66 |
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67 |
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68 def skip_empty_successor(ui, command): |
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69 empty_successor = ui.config(b'rewrite', b'empty-successor') |
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70 if empty_successor == b'skip': |
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71 return True |
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72 elif empty_successor == b'keep': |
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73 return False |
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74 else: |
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75 raise error.ConfigError( |
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76 _( |
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77 b"%s doesn't know how to handle config " |
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78 b"rewrite.empty-successor=%s (only 'skip' and 'keep' are " |
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79 b"supported)" |
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80 ) |
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81 % (command, empty_successor) |
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82 ) |
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83 |
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84 |
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85 def update_hash_refs(repo, commitmsg, pending=None): |
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86 """Replace all obsolete commit hashes in the message with the current hash. |
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87 |
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88 If the obsolete commit was split or is divergent, the hash is not replaced |
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89 as there's no way to know which successor to choose. |
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90 |
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91 For commands that update a series of commits in the current transaction, the |
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92 new obsolete markers can be considered by setting ``pending`` to a mapping |
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93 of ``pending[oldnode] = [successor_node1, successor_node2,..]``. |
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94 """ |
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95 if not pending: |
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96 pending = {} |
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97 cache = {} |
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98 hashes = re.findall(NODE_RE, commitmsg) |
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99 unfi = repo.unfiltered() |
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100 for h in hashes: |
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101 fullnode = scmutil.resolvehexnodeidprefix(unfi, h) |
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102 if fullnode is None: |
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103 continue |
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104 ctx = unfi[fullnode] |
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105 if not ctx.obsolete(): |
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106 successors = pending.get(fullnode) |
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107 if successors is None: |
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108 continue |
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109 # obsutil.successorssets() returns a list of list of nodes |
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110 successors = [successors] |
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111 else: |
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112 successors = obsutil.successorssets(repo, ctx.node(), cache=cache) |
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113 |
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114 # We can't make any assumptions about how to update the hash if the |
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115 # cset in question was split or diverged. |
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116 if len(successors) == 1 and len(successors[0]) == 1: |
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117 successor = successors[0][0] |
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118 if successor is not None: |
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119 newhash = hex(successor) |
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120 commitmsg = commitmsg.replace(h, newhash[: len(h)]) |
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121 else: |
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122 repo.ui.note( |
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123 _( |
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124 b'The stale commit message reference to %s could ' |
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125 b'not be updated\n(The referenced commit was dropped)\n' |
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126 ) |
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127 % h |
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128 ) |
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129 else: |
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130 repo.ui.note( |
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131 _( |
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132 b'The stale commit message reference to %s could ' |
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133 b'not be updated\n' |
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134 ) |
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135 % h |
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136 ) |
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137 |
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138 return commitmsg |