Mercurial > hg > mercurial-crew-with-dirclash
annotate hgext/hbisect.py @ 4102:544838cc1158
Don't lie that "binary file has changed"
Without -a option to "hg diff", mdiff.unidiff reported that "Binary
file foo has changed" without even trying to compare things. Now it
computes MD5 of old and new files, compares them and makes the conclusion.
author | tailgunner@smtp.ru |
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date | Sat, 17 Feb 2007 09:54:56 -0200 |
parents | b4ad640a3bcf |
children | abaee83ce0a6 50a46ae14efb |
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,cmdutil") |
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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 = cmdutil.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 } |