Mercurial > hg > mercurial-crew-with-dirclash
annotate hgext/hbisect.py @ 3018:b9dbbcf8a488
Document the fact that revert might overwrite .orig files
author | Benoit Boissinot <benoit.boissinot@ens-lyon.org> |
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date | Tue, 29 Aug 2006 19:26:58 +0200 |
parents | 3d6efcbbd1c9 |
children | b4ad640a3bcf |
rev | line source |
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1 # bisect extension for mercurial |
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2 # |
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3 # Copyright 2005, 2006 Benoit Boissinot <benoit.boissinot@ens-lyon.org> |
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4 # Inspired by git bisect, extension skeleton taken from mq.py. |
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5 # |
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6 # This software may be used and distributed according to the terms |
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7 # of the GNU General Public License, incorporated herein by reference. |
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8 |
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9 from mercurial.i18n import gettext as _ |
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10 from mercurial.demandload import demandload |
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11 demandload(globals(), "os sys sets mercurial:hg,util,commands") |
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12 |
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13 versionstr = "0.0.3" |
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14 |
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15 def lookup_rev(ui, repo, rev=None): |
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16 """returns rev or the checked-out revision if rev is None""" |
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17 if not rev is None: |
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18 return repo.lookup(rev) |
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19 parents = [p for p in repo.dirstate.parents() if p != hg.nullid] |
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20 if len(parents) != 1: |
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21 raise util.Abort(_("unexpected number of parents, " |
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22 "please commit or revert")) |
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23 return parents.pop() |
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24 |
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25 def check_clean(ui, repo): |
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26 modified, added, removed, deleted, unknown = repo.status()[:5] |
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27 if modified or added or removed: |
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28 ui.warn("Repository is not clean, please commit or revert\n") |
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29 sys.exit(1) |
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30 |
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31 class bisect(object): |
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32 """dichotomic search in the DAG of changesets""" |
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33 def __init__(self, ui, repo): |
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34 self.repo = repo |
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35 self.path = repo.join("bisect") |
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36 self.opener = util.opener(self.path) |
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37 self.ui = ui |
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38 self.goodrevs = [] |
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39 self.badrev = None |
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40 self.good_dirty = 0 |
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41 self.bad_dirty = 0 |
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42 self.good_path = "good" |
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43 self.bad_path = "bad" |
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44 |
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45 if os.path.exists(os.path.join(self.path, self.good_path)): |
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46 self.goodrevs = self.opener(self.good_path).read().splitlines() |
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47 self.goodrevs = [hg.bin(x) for x in self.goodrevs] |
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48 if os.path.exists(os.path.join(self.path, self.bad_path)): |
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49 r = self.opener(self.bad_path).read().splitlines() |
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50 if r: |
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51 self.badrev = hg.bin(r.pop(0)) |
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52 |
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53 def write(self): |
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54 if not os.path.isdir(self.path): |
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55 return |
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56 f = self.opener(self.good_path, "w") |
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57 f.write("\n".join([hg.hex(r) for r in self.goodrevs])) |
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58 if len(self.goodrevs) > 0: |
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59 f.write("\n") |
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60 f = self.opener(self.bad_path, "w") |
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61 if self.badrev: |
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62 f.write(hg.hex(self.badrev) + "\n") |
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63 |
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64 def init(self): |
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65 """start a new bisection""" |
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66 if os.path.isdir(self.path): |
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67 raise util.Abort(_("bisect directory already exists\n")) |
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68 os.mkdir(self.path) |
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69 check_clean(self.ui, self.repo) |
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70 return 0 |
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71 |
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72 def reset(self): |
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73 """finish a bisection""" |
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74 if os.path.isdir(self.path): |
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75 sl = [os.path.join(self.path, p) |
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76 for p in [self.bad_path, self.good_path]] |
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77 for s in sl: |
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78 if os.path.exists(s): |
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79 os.unlink(s) |
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80 os.rmdir(self.path) |
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81 # Not sure about this |
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82 #self.ui.write("Going back to tip\n") |
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83 #self.repo.update(self.repo.changelog.tip()) |
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84 return 1 |
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85 |
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86 def num_ancestors(self, head=None, stop=None): |
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87 """ |
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88 returns a dict with the mapping: |
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89 node -> number of ancestors (self included) |
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90 for all nodes who are ancestor of head and |
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91 not in stop. |
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92 """ |
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93 if head is None: |
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94 head = self.badrev |
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95 return self.__ancestors_and_nb_ancestors(head, stop)[1] |
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96 |
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97 def ancestors(self, head=None, stop=None): |
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98 """ |
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99 returns the set of the ancestors of head (self included) |
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100 who are not in stop. |
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101 """ |
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102 if head is None: |
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103 head = self.badrev |
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104 return self.__ancestors_and_nb_ancestors(head, stop)[0] |
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105 |
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106 def __ancestors_and_nb_ancestors(self, head, stop=None): |
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107 """ |
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108 if stop is None then ancestors of goodrevs are used as |
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109 lower limit. |
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110 |
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111 returns (anc, n_child) where anc is the set of the ancestors of head |
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112 and n_child is a dictionary with the following mapping: |
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113 node -> number of ancestors (self included) |
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114 """ |
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115 cl = self.repo.changelog |
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116 if not stop: |
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117 stop = sets.Set([]) |
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118 for i in xrange(len(self.goodrevs)-1, -1, -1): |
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119 g = self.goodrevs[i] |
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120 if g in stop: |
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121 continue |
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122 stop.update(cl.reachable(g)) |
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123 def num_children(a): |
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124 """ |
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125 returns a dictionnary with the following mapping |
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126 node -> [number of children, empty set] |
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127 """ |
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128 d = {a: [0, sets.Set([])]} |
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129 for i in xrange(cl.rev(a)+1): |
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130 n = cl.node(i) |
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131 if not d.has_key(n): |
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132 d[n] = [0, sets.Set([])] |
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133 parents = [p for p in cl.parents(n) if p != hg.nullid] |
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134 for p in parents: |
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135 d[p][0] += 1 |
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136 return d |
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137 |
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138 if head in stop: |
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139 raise util.Abort(_("Unconsistent state, %s:%s is good and bad") |
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140 % (cl.rev(head), hg.short(head))) |
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141 n_child = num_children(head) |
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142 for i in xrange(cl.rev(head)+1): |
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143 n = cl.node(i) |
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144 parents = [p for p in cl.parents(n) if p != hg.nullid] |
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145 for p in parents: |
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146 n_child[p][0] -= 1 |
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147 if not n in stop: |
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148 n_child[n][1].union_update(n_child[p][1]) |
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149 if n_child[p][0] == 0: |
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150 n_child[p] = len(n_child[p][1]) |
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151 if not n in stop: |
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152 n_child[n][1].add(n) |
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153 if n_child[n][0] == 0: |
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154 if n == head: |
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155 anc = n_child[n][1] |
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156 n_child[n] = len(n_child[n][1]) |
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157 return anc, n_child |
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158 |
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159 def next(self): |
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160 if not self.badrev: |
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161 raise util.Abort(_("You should give at least one bad revision")) |
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162 if not self.goodrevs: |
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163 self.ui.warn(_("No good revision given\n")) |
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164 self.ui.warn(_("Marking the first revision as good\n")) |
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165 ancestors, num_ancestors = self.__ancestors_and_nb_ancestors( |
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166 self.badrev) |
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167 tot = len(ancestors) |
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168 if tot == 1: |
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169 if ancestors.pop() != self.badrev: |
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170 raise util.Abort(_("Could not find the first bad revision")) |
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171 self.ui.write(_("The first bad revision is:\n")) |
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172 displayer = commands.show_changeset(self.ui, self.repo, {}) |
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173 displayer.show(changenode=self.badrev) |
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174 return None |
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175 best_rev = None |
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176 best_len = -1 |
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177 for n in ancestors: |
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178 l = num_ancestors[n] |
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179 l = min(l, tot - l) |
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180 if l > best_len: |
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181 best_len = l |
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182 best_rev = n |
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183 assert best_rev is not None |
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184 nb_tests = 0 |
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185 q, r = divmod(tot, 2) |
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186 while q: |
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187 nb_tests += 1 |
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188 q, r = divmod(q, 2) |
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189 msg = _("Testing changeset %s:%s (%s changesets remaining, " |
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190 "~%s tests)\n") % (self.repo.changelog.rev(best_rev), |
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191 hg.short(best_rev), tot, nb_tests) |
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192 self.ui.write(msg) |
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193 return best_rev |
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194 |
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195 def autonext(self): |
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196 """find and update to the next revision to test""" |
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197 check_clean(self.ui, self.repo) |
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198 rev = self.next() |
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199 if rev is not None: |
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200 return hg.clean(self.repo, rev) |
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201 |
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202 def good(self, rev): |
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203 self.goodrevs.append(rev) |
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204 |
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205 def autogood(self, rev=None): |
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206 """mark revision as good and update to the next revision to test""" |
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207 check_clean(self.ui, self.repo) |
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208 rev = lookup_rev(self.ui, self.repo, rev) |
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209 self.good(rev) |
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210 if self.badrev: |
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211 return self.autonext() |
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212 |
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213 def bad(self, rev): |
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214 self.badrev = rev |
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215 |
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216 def autobad(self, rev=None): |
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217 """mark revision as bad and update to the next revision to test""" |
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218 check_clean(self.ui, self.repo) |
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219 rev = lookup_rev(self.ui, self.repo, rev) |
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220 self.bad(rev) |
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221 if self.goodrevs: |
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222 self.autonext() |
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223 |
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224 # should we put it in the class ? |
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225 def test(ui, repo, rev): |
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226 """test the bisection code""" |
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227 b = bisect(ui, repo) |
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228 rev = repo.lookup(rev) |
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229 ui.write("testing with rev %s\n" % hg.hex(rev)) |
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230 anc = b.ancestors() |
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231 while len(anc) > 1: |
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232 if not rev in anc: |
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233 ui.warn("failure while bisecting\n") |
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234 sys.exit(1) |
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235 ui.write("it worked :)\n") |
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236 new_rev = b.next() |
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237 ui.write("choosing if good or bad\n") |
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238 if rev in b.ancestors(head=new_rev): |
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239 b.bad(new_rev) |
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240 ui.write("it is bad\n") |
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241 else: |
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242 b.good(new_rev) |
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243 ui.write("it is good\n") |
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244 anc = b.ancestors() |
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245 #repo.update(new_rev, force=True) |
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246 for v in anc: |
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247 if v != rev: |
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248 ui.warn("fail to found cset! :(\n") |
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249 return 1 |
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250 ui.write("Found bad cset: %s\n" % hg.hex(b.badrev)) |
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251 ui.write("Everything is ok :)\n") |
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252 return 0 |
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253 |
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254 def bisect_run(ui, repo, cmd=None, *args): |
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255 """bisect extension: dichotomic search in the DAG of changesets |
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256 for subcommands see "hg bisect help\" |
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257 """ |
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258 def help_(cmd=None, *args): |
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259 """show help for a given bisect subcommand or all subcommands""" |
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260 cmdtable = bisectcmdtable |
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261 if cmd: |
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262 doc = cmdtable[cmd][0].__doc__ |
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263 synopsis = cmdtable[cmd][2] |
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264 ui.write(synopsis + "\n") |
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265 ui.write("\n" + doc + "\n") |
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266 return |
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267 ui.write(_("list of subcommands for the bisect extension\n\n")) |
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268 cmds = cmdtable.keys() |
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269 cmds.sort() |
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270 m = max([len(c) for c in cmds]) |
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271 for cmd in cmds: |
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272 doc = cmdtable[cmd][0].__doc__.splitlines(0)[0].rstrip() |
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273 ui.write(" %-*s %s\n" % (m, cmd, doc)) |
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274 |
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275 b = bisect(ui, repo) |
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276 bisectcmdtable = { |
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277 "init": (b.init, 0, _("hg bisect init")), |
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278 "bad": (b.autobad, 1, _("hg bisect bad [<rev>]")), |
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279 "good": (b.autogood, 1, _("hg bisect good [<rev>]")), |
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280 "next": (b.autonext, 0, _("hg bisect next")), |
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281 "reset": (b.reset, 0, _("hg bisect reset")), |
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282 "help": (help_, 1, _("hg bisect help [<subcommand>]")), |
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283 } |
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284 |
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285 if not bisectcmdtable.has_key(cmd): |
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286 ui.warn(_("bisect: Unknown sub-command\n")) |
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287 return help_() |
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288 if len(args) > bisectcmdtable[cmd][1]: |
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289 ui.warn(_("bisect: Too many arguments\n")) |
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290 return help_() |
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291 try: |
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292 return bisectcmdtable[cmd][0](*args) |
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293 finally: |
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294 b.write() |
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295 |
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296 cmdtable = { |
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297 "bisect": (bisect_run, [], _("hg bisect [help|init|reset|next|good|bad]")), |
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298 #"bisect-test": (test, [], "hg bisect-test rev"), |
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299 } |