Mercurial > hg > mercurial-crew-with-dirclash
annotate contrib/hbisect.py @ 1416:19d2776f1725
hgweb: hide trivial parent (like in show_changeset)
author | Benoit Boissinot <benoit.boissinot@ens-lyon.org> |
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date | Wed, 19 Oct 2005 20:54:46 -0700 |
parents | a7678cbd7c28 |
children | 59b3639df0a9 |
rev | line source |
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1 #!/usr/bin/env python |
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2 # |
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3 # This software may be used and distributed according to the terms |
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4 # of the GNU General Public License, incorporated herein by reference. |
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5 |
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6 from mercurial.demandload import demandload |
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7 demandload(globals(), "os sys sets") |
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8 from mercurial import hg |
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9 |
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10 versionstr = "0.0.3" |
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11 |
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12 def lookup_rev(ui, repo, rev=None): |
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13 """returns rev or the checked-out revision if rev is None""" |
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14 if not rev is None: |
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15 return repo.lookup(rev) |
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16 parents = [p for p in repo.dirstate.parents() if p != hg.nullid] |
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17 if len(parents) != 1: |
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18 ui.warn("unexpected number of parents\n") |
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19 ui.warn("please commit or revert\n") |
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20 sys.exit(1) |
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21 return parents.pop() |
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22 |
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23 def check_clean(ui, repo): |
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24 c, a, d, u = repo.changes() |
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25 if c or a or d: |
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26 ui.warn("Repository is not clean, please commit or revert\n") |
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27 sys.exit(1) |
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28 |
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29 class bisect: |
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30 """dichotomic search in the DAG of changesets""" |
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31 def __init__(self, ui, repo): |
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32 self.repo = repo |
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33 self.path = os.path.join(repo.join(""), "bisect") |
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34 self.ui = ui |
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35 self.goodrevs = [] |
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36 self.badrev = None |
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37 self.good_dirty = 0 |
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38 self.bad_dirty = 0 |
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39 self.good_path = os.path.join(self.path, "good") |
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40 self.bad_path = os.path.join(self.path, "bad") |
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41 |
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42 s = self.good_path |
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43 if os.path.exists(s): |
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44 self.goodrevs = self.repo.opener(s).read().splitlines() |
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45 self.goodrevs = [hg.bin(x) for x in self.goodrevs] |
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46 s = self.bad_path |
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47 if os.path.exists(s): |
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48 r = self.repo.opener(s).read().splitlines() |
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49 if r: |
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50 self.badrev = hg.bin(r.pop(0)) |
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51 |
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52 def __del__(self): |
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53 if not os.path.isdir(self.path): |
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54 return |
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55 f = self.repo.opener(self.good_path, "w") |
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56 f.write("\n".join([hg.hex(r) for r in self.goodrevs])) |
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57 if len(self.goodrevs) > 0: |
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58 f.write("\n") |
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59 f = self.repo.opener(self.bad_path, "w") |
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60 if self.badrev: |
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61 f.write(hg.hex(self.badrev) + "\n") |
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62 |
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63 def init(self): |
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64 """start a new bisection""" |
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65 if os.path.isdir(self.path): |
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66 self.ui.warn("bisect directory already exists\n") |
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67 return 1 |
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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 = [self.bad_path, self.good_path] |
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76 for s in sl: |
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77 if os.path.exists(s): |
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78 os.unlink(s) |
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79 os.rmdir(self.path) |
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80 # Not sure about this |
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81 #self.ui.write("Going back to tip\n") |
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82 #self.repo.update(self.repo.changelog.tip()) |
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83 return 1 |
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84 |
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85 def num_ancestors(self, head=None, stop=None): |
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86 """ |
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87 returns a dict with the mapping: |
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88 node -> number of ancestors (self included) |
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89 for all nodes who are ancestor of head and |
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90 not in stop. |
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91 """ |
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92 if head is None: |
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93 head = self.badrev |
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94 return self.__ancestors_and_nb_ancestors(head, stop)[1] |
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95 |
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96 def ancestors(self, head=None, stop=None): |
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97 """ |
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98 returns the set of the ancestors of head (self included) |
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99 who are not in stop. |
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100 """ |
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101 if head is None: |
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102 head = self.badrev |
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103 return self.__ancestors_and_nb_ancestors(head, stop)[0] |
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104 |
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105 def __ancestors_and_nb_ancestors(self, head, stop=None): |
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106 """ |
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107 if stop is None then ancestors of goodrevs are used as |
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108 lower limit. |
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109 |
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110 returns (anc, n_child) where anc is the set of the ancestors of head |
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111 and n_child is a dictionary with the following mapping: |
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112 node -> number of ancestors (self included) |
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113 """ |
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114 cl = self.repo.changelog |
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115 if not stop: |
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116 stop = sets.Set([]) |
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117 for g in reversed(self.goodrevs): |
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118 if g in stop: |
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119 continue |
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120 stop.update(cl.reachable(g)) |
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121 def num_children(a): |
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122 """ |
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123 returns a dictionnary with the following mapping |
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124 node -> [number of children, empty set] |
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125 """ |
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126 d = {a: [0, sets.Set([])]} |
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127 for i in xrange(cl.rev(a)+1): |
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128 n = cl.node(i) |
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129 if not d.has_key(n): |
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130 d[n] = [0, sets.Set([])] |
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131 parents = [p for p in cl.parents(n) if p != hg.nullid] |
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132 for p in parents: |
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133 d[p][0] += 1 |
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134 return d |
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135 |
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136 if head in stop: |
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137 self.ui.warn("Unconsistent state, %s is good and bad\n" |
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138 % hg.hex(head)) |
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139 sys.exit(1) |
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140 n_child = num_children(head) |
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141 for i in xrange(cl.rev(head)+1): |
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142 n = cl.node(i) |
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143 parents = [p for p in cl.parents(n) if p != hg.nullid] |
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144 for p in parents: |
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145 n_child[p][0] -= 1 |
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146 if not n in stop: |
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147 n_child[n][1].union_update(n_child[p][1]) |
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148 if n_child[p][0] == 0: |
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149 n_child[p] = len(n_child[p][1]) |
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150 if not n in stop: |
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151 n_child[n][1].add(n) |
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152 if n_child[n][0] == 0: |
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153 if n == head: |
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154 anc = n_child[n][1] |
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155 n_child[n] = len(n_child[n][1]) |
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156 return anc, n_child |
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157 |
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158 def next(self): |
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159 if not self.badrev: |
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160 self.ui.warn("You should give at least one bad\n") |
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161 sys.exit(1) |
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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("Assuming the first revision is good\n") |
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165 ancestors, num_ancestors = self.__ancestors_and_nb_ancestors(self.badrev) |
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166 tot = len(ancestors) |
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167 if tot == 1: |
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168 if ancestors.pop() != self.badrev: |
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169 self.ui.warn("Could not find the first bad revision\n") |
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170 sys.exit(1) |
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171 self.ui.write( |
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172 "The first bad revision is : %s\n" % hg.hex(self.badrev)) |
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173 sys.exit(0) |
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174 self.ui.write("%d revisions left\n" % tot) |
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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 return best_rev |
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184 |
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185 def autonext(self): |
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186 """find and update to the next revision to test""" |
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187 check_clean(self.ui, self.repo) |
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188 rev = self.next() |
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189 self.ui.write("Now testing %s\n" % hg.hex(rev)) |
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190 return self.repo.update(rev, allow=True, force=True) |
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191 |
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192 def good(self, rev): |
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193 self.goodrevs.append(rev) |
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194 |
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195 def autogood(self, rev=None): |
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196 """mark revision as good 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 = lookup_rev(self.ui, self.repo, rev) |
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199 self.good(rev) |
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200 if self.badrev: |
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201 self.autonext() |
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202 |
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203 def bad(self, rev): |
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204 self.badrev = rev |
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205 |
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206 def autobad(self, rev=None): |
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207 """mark revision as bad and update to the next revision to test""" |
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208 check_clean(self.ui, self.repo) |
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209 rev = lookup_rev(self.ui, self.repo, rev) |
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210 self.bad(rev) |
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211 if self.goodrevs: |
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212 self.autonext() |
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213 |
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214 # should we put it in the class ? |
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215 def test(ui, repo, rev): |
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216 """test the bisection code""" |
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217 b = bisect(ui, repo) |
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218 rev = repo.lookup(rev) |
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219 ui.write("testing with rev %s\n" % hg.hex(rev)) |
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220 anc = b.ancestors() |
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221 while len(anc) > 1: |
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222 if not rev in anc: |
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223 ui.warn("failure while bisecting\n") |
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224 sys.exit(1) |
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225 ui.write("it worked :)\n") |
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226 new_rev = b.next() |
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227 ui.write("choosing if good or bad\n") |
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228 if rev in b.ancestors(head=new_rev): |
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229 b.bad(new_rev) |
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230 ui.write("it is bad\n") |
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231 else: |
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232 b.good(new_rev) |
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233 ui.write("it is good\n") |
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234 anc = b.ancestors() |
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235 repo.update(new_rev, allow=True, force=True) |
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236 for v in anc: |
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237 if v != rev: |
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238 ui.warn("fail to found cset! :(\n") |
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239 return 1 |
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240 ui.write("Found bad cset: %s\n" % hg.hex(b.badrev)) |
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241 ui.write("Everything is ok :)\n") |
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242 return 0 |
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243 |
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244 def bisect_run(ui, repo, cmd=None, *args): |
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245 """bisect extension: dichotomic search in the DAG of changesets |
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246 for subcommands see "hg bisect help\" |
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247 """ |
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248 def help_(cmd=None, *args): |
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249 """show help for a given bisect subcommand or all subcommands""" |
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250 cmdtable = bisectcmdtable |
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251 if cmd: |
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252 doc = cmdtable[cmd][0].__doc__ |
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253 synopsis = cmdtable[cmd][2] |
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254 ui.write(synopsis + "\n") |
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255 ui.write("\n" + doc + "\n") |
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256 return |
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257 ui.write("list of subcommands for the bisect extension\n\n") |
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258 cmds = cmdtable.keys() |
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259 cmds.sort() |
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260 m = max([len(c) for c in cmds]) |
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261 for cmd in cmds: |
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262 doc = cmdtable[cmd][0].__doc__.splitlines(0)[0].rstrip() |
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263 ui.write(" %-*s %s\n" % (m, cmd, doc)) |
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264 |
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265 b = bisect(ui, repo) |
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266 bisectcmdtable = { |
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267 "init": (b.init, 0, "hg bisect init"), |
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268 "bad": (b.autobad, 1, "hg bisect bad [<rev>]"), |
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269 "good": (b.autogood, 1, "hg bisect good [<rev>]"), |
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270 "next": (b.autonext, 0, "hg bisect next"), |
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271 "reset": (b.reset, 0, "hg bisect reset"), |
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272 "help": (help_, 1, "hg bisect help [<subcommand>]"), |
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273 } |
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274 |
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275 if not bisectcmdtable.has_key(cmd): |
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276 ui.warn("bisect: Unknown sub-command\n") |
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277 return help_() |
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278 if len(args) > bisectcmdtable[cmd][1]: |
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279 ui.warn("bisect: Too many arguments\n") |
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280 return help_() |
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281 return bisectcmdtable[cmd][0](*args) |
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282 |
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283 cmdtable = { |
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284 "bisect": (bisect_run, [], |
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285 "hg bisect [help|init|reset|next|good|bad]"), |
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286 #"bisect-test": (test, [], "hg bisect-test rev"), |
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287 } |