annotate contrib/hgit @ 720:095dd8c757e0

Change hgit revision lookup to use repo.lookup
author mason@suse.com
date Tue, 19 Jul 2005 12:41:08 -0500
parents dda258572847
children 8db4d406b3d3 d2422f10c136
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1 #!/usr/bin/env python
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2 #
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3 # Minimal support for git commands on an hg repository
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4 #
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5 # Copyright 2005 Chris Mason <mason@suse.com>
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6 #
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7 # This software may be used and distributed according to the terms
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8 # of the GNU General Public License, incorporated herein by reference.
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9
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10 import time, sys, signal
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11 from mercurial import hg, mdiff, fancyopts, commands, ui
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12
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13 def difftree(args, ui, repo):
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14 def __difftree(repo, files = None, node1 = None, node2 = None):
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15 def date(c):
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16 return time.asctime(time.gmtime(float(c[2].split(' ')[0])))
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17
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18 if node2:
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19 change = repo.changelog.read(node2)
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20 mmap2 = repo.manifest.read(change[0])
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21 (c, a, d, u) = repo.changes(node1, node2)
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22 def read(f): return repo.file(f).read(mmap2[f])
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23 date2 = date(change)
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24 else:
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25 date2 = time.asctime()
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26 (c, a, d, u) = repo.diffdir(repo.root, node1)
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27 if not node1:
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28 node1 = repo.dirstate.parents()[0]
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29 def read(f): return file(os.path.join(repo.root, f)).read()
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30
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31 change = repo.changelog.read(node1)
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32 mmap = repo.manifest.read(change[0])
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33 date1 = date(change)
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34 empty = "0" * 40;
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35
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36 if files:
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37 c, a, d = map(lambda x: filterfiles(files, x), (c, a, d))
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38
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39 for f in c:
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40 # TODO get file permissions
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41 print ":100664 100664 %s %s M\t%s\t%s" % (hg.hex(mmap[f]),
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42 hg.hex(mmap2[f]), f, f)
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43 for f in a:
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44 print ":000000 100664 %s %s N\t%s\t%s" % (empty, hg.hex(mmap2[f]), f, f)
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45 for f in d:
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46 print ":100664 000000 %s %s D\t%s\t%s" % (hg.hex(mmap[f]), empty, f, f)
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47 ##
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48
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49 revs = []
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50 if args:
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51 doptions = {}
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52 opts = [('p', 'patch', None, 'patch'),
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53 ('r', 'recursive', None, 'recursive')]
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54 args = fancyopts.fancyopts(args, opts, doptions)
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55
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56 if len(args) < 2:
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57 help()
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58 sys.exit(1)
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59 revs.append(repo.lookup(args[0]))
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60 revs.append(repo.lookup(args[1]))
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61 args = args[2:]
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62 if doptions['patch']:
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63 commands.dodiff(sys.stdout, ui, repo, args, *revs)
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64 else:
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65 __difftree(repo, args, *revs)
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66
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67 def catcommit(repo, n, prefix):
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68 nlprefix = '\n' + prefix;
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69 changes = repo.changelog.read(n)
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70 (p1, p2) = repo.changelog.parents(n)
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71 (h, h1, h2) = map(hg.hex, (n, p1, p2))
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72 (i1, i2) = map(repo.changelog.rev, (p1, p2))
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73 print "tree %s" % (h)
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74 if i1 != -1: print "%sparent %s" % (prefix, h1)
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75 if i2 != -1: print "%sparent %s" % (prefix, h2)
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76 date_ar = changes[2].split(' ')
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77 date = int(float(date_ar[0]))
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78 print "%sauthor <%s> %s %s" % (prefix, changes[1], date, date_ar[1])
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79 print "%scommitter <%s> %s %s" % (prefix, changes[1], date, date_ar[1])
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80 print prefix
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81 if prefix != "":
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82 print "%s%s" % (prefix, changes[4].replace('\n', nlprefix).strip())
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83 else:
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84 print changes[4]
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85
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86 def catfile(args, ui, repo):
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87 doptions = {}
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88 opts = [('s', 'stdin', None, 'stdin')]
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89 args = fancyopts.fancyopts(args, opts, doptions)
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90
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91 # in stdin mode, every line except the commit is prefixed with two
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92 # spaces. This way the our caller can find the commit without magic
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93 # strings
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94 #
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95 prefix = ""
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96 if doptions['stdin']:
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97 try:
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98 (type, r) = raw_input().split(' ');
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99 prefix = " "
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100 except EOFError:
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101 return
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102
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103 else:
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104 if len(args) < 2:
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105 help()
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106 sys.exit(1)
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107 type = args[0]
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108 r = args[1]
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109
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110 while r:
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111 if type != "commit":
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112 sys.stderr.write("aborting hg cat-file only understands commits\n")
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113 sys.exit(1);
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114 n = repo.lookup(r)
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115 catcommit(repo, n, prefix)
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116 if doptions['stdin']:
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117 try:
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118 (type, r) = raw_input().split(' ');
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119 except EOFError:
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120 break
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121 else:
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122 break
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123
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124 # git rev-tree is a confusing thing. You can supply a number of
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125 # commit sha1s on the command line, and it walks the commit history
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126 # telling you which commits are reachable from the supplied ones via
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127 # a bitmask based on arg position.
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128 # you can specify a commit to stop at by starting the sha1 with ^
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129 def revtree(args, repo, full="tree", maxnr=0):
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130 # calculate and return the reachability bitmask for sha
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131 def is_reachable(ar, reachable, sha):
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132 if len(ar) == 0:
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133 return 1
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134 mask = 0
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135 for i in range(len(ar)):
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136 if sha in reachable[i]:
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137 mask |= 1 << i
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138
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139 return mask
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140
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141 reachable = []
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142 stop_sha1 = []
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143 want_sha1 = []
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144 count = 0
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145
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146 # figure out which commits they are asking for and which ones they
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147 # want us to stop on
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148 for i in range(len(args)):
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149 if args[i].startswith('^'):
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150 s = repo.lookup(args[i][1:])
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151 stop_sha1.append(s)
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152 want_sha1.append(s)
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153 elif args[i] != 'HEAD':
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154 want_sha1.append(repo.lookup(args[i]))
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155
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156 # calculate the graph for the supplied commits
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157 for i in range(len(want_sha1)):
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158 reachable.append({});
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159 n = want_sha1[i];
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160 visit = [n];
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161 reachable[i][n] = 1
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162 while visit:
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163 n = visit.pop(0)
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164 if n in stop_sha1:
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165 break
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166 for p in repo.changelog.parents(n):
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167 if p not in reachable[i]:
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168 reachable[i][p] = 1
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169 visit.append(p)
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170 if p in stop_sha1:
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171 break
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172
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173 # walk the repository looking for commits that are in our
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174 # reachability graph
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175 for i in range(repo.changelog.count()-1, -1, -1):
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176 n = repo.changelog.node(i)
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177 mask = is_reachable(want_sha1, reachable, n)
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178 if mask:
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179 if not full:
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180 print hg.hex(n)
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181 elif full is "commit":
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182 print hg.hex(n)
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183 catcommit(repo, n, ' ')
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184 else:
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185 changes = repo.changelog.read(n)
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186 (p1, p2) = repo.changelog.parents(n)
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187 (h, h1, h2) = map(hg.hex, (n, p1, p2))
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188 (i1, i2) = map(repo.changelog.rev, (p1, p2))
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189
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190 date = changes[2].split(' ')[0]
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191 print "%s %s:%s" % (date, h, mask),
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192 mask = is_reachable(want_sha1, reachable, p1)
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193 if i1 != -1 and mask > 0:
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194 print "%s:%s " % (h1, mask),
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195 mask = is_reachable(want_sha1, reachable, p2)
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196 if i2 != -1 and mask > 0:
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197 print "%s:%s " % (h2, mask),
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198 print ""
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199 if maxnr and count >= maxnr:
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200 break
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201 count += 1
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202
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203 # git rev-list tries to order things by date, and has the ability to stop
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204 # at a given commit without walking the whole repo. TODO add the stop
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205 # parameter
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206 def revlist(args, repo):
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207 doptions = {}
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208 opts = [('c', 'commit', None, 'commit'),
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209 ('n', 'max-nr', 0, 'max-nr')]
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210 args = fancyopts.fancyopts(args, opts, doptions)
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211 if doptions['commit']:
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212 full = "commit"
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213 else:
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214 full = None
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215 for i in range(1, len(args)):
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216 args[i] = '^' + args[i]
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217 revtree(args, repo, full, doptions['max-nr'])
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218
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219 def catchterm(*args):
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220 raise SignalInterrupt
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221
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222 def help():
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223 sys.stderr.write("commands:\n")
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224 sys.stderr.write(" hgit cat-file [type] sha1\n")
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225 sys.stderr.write(" hgit diff-tree [-p] [-r] sha1 sha1\n")
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226 sys.stderr.write(" hgit rev-tree [sha1 ... [^stop sha1]]\n")
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227 sys.stderr.write(" hgit rev-list [-c] [sha1 [stop sha1]\n")
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228
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229 cmd = sys.argv[1]
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230 args = sys.argv[2:]
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231 u = ui.ui()
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232 signal.signal(signal.SIGTERM, catchterm)
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233 repo = hg.repository(ui = u)
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234
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235 if cmd == "diff-tree":
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236 difftree(args, u, repo)
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237
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238 elif cmd == "cat-file":
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239 catfile(args, u, repo)
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240
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241 elif cmd == "rev-tree":
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242 revtree(args, repo)
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243
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244 elif cmd == "rev-list":
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245 revlist(args, repo)
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246
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247 elif cmd == "help":
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248 help()
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249
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250 else:
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251 if cmd: sys.stderr.write("unknown command\n\n")
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252 help()
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253 sys.exit(1)
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254
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255 sys.exit(0)