Mercurial > hg > mercurial-crew-with-dirclash
annotate mercurial/merge.py @ 3570:c141d07198b9
Inform the user about the new URL when being redirected via http.
Additionally the changed code ensures that the new URL is used,
even if it doesn't end with the query string.
author | Thomas Arendsen Hein <thomas@intevation.de> |
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date | Sat, 28 Oct 2006 23:05:57 +0200 |
parents | 798bcde0c9c2 |
children | 3b4e00cba57a |
rev | line source |
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1 # merge.py - directory-level update/merge handling for Mercurial |
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2 # |
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3 # Copyright 2006 Matt Mackall <mpm@selenic.com> |
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4 # |
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5 # This software may be used and distributed according to the terms |
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6 # of the GNU General Public License, incorporated herein by reference. |
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7 |
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8 from node import * |
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9 from i18n import gettext as _ |
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10 from demandload import * |
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11 demandload(globals(), "errno util os tempfile") |
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12 |
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13 def filemerge(repo, fw, fo, wctx, mctx): |
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14 """perform a 3-way merge in the working directory |
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15 |
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16 fw = filename in the working directory |
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17 fo = filename in other parent |
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18 wctx, mctx = working and merge changecontexts |
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19 """ |
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20 |
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21 def temp(prefix, ctx): |
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22 pre = "%s~%s." % (os.path.basename(ctx.path()), prefix) |
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23 (fd, name) = tempfile.mkstemp(prefix=pre) |
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24 f = os.fdopen(fd, "wb") |
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25 repo.wwrite(ctx.path(), ctx.data(), f) |
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26 f.close() |
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27 return name |
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28 |
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29 fcm = wctx.filectx(fw) |
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30 fco = mctx.filectx(fo) |
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31 |
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32 if not fco.cmp(fcm.data()): # files identical? |
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33 return None |
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34 |
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35 fca = fcm.ancestor(fco) |
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36 if not fca: |
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37 fca = repo.filectx(fw, fileid=-1) |
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38 a = repo.wjoin(fw) |
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39 b = temp("base", fca) |
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40 c = temp("other", fco) |
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41 |
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42 if fw != fo: |
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43 repo.ui.status(_("merging %s and %s\n") % (fw, fo)) |
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44 else: |
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45 repo.ui.status(_("merging %s\n") % fw) |
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46 |
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47 repo.ui.debug(_("my %s other %s ancestor %s\n") % (fcm, fco, fca)) |
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48 |
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49 cmd = (os.environ.get("HGMERGE") or repo.ui.config("ui", "merge") |
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50 or "hgmerge") |
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51 r = util.system('%s "%s" "%s" "%s"' % (cmd, a, b, c), cwd=repo.root, |
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52 environ={'HG_FILE': fw, |
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53 'HG_MY_NODE': str(wctx.parents()[0]), |
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54 'HG_OTHER_NODE': str(mctx)}) |
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55 if r: |
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56 repo.ui.warn(_("merging %s failed!\n") % fw) |
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57 |
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58 os.unlink(b) |
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59 os.unlink(c) |
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60 return r |
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61 |
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62 def checkunknown(wctx, mctx): |
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63 "check for collisions between unknown files and files in mctx" |
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64 man = mctx.manifest() |
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65 for f in wctx.unknown(): |
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66 if f in man: |
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67 if mctx.filectx(f).cmp(wctx.filectx(f).data()): |
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68 raise util.Abort(_("'%s' already exists in the working" |
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69 " dir and differs from remote") % f) |
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70 |
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71 def forgetremoved(wctx, mctx): |
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72 """ |
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73 Forget removed files |
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74 |
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75 If we're jumping between revisions (as opposed to merging), and if |
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76 neither the working directory nor the target rev has the file, |
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77 then we need to remove it from the dirstate, to prevent the |
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78 dirstate from listing the file when it is no longer in the |
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79 manifest. |
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80 """ |
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81 |
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82 action = [] |
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83 man = mctx.manifest() |
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84 for f in wctx.deleted() + wctx.removed(): |
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85 if f not in man: |
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86 action.append((f, "f")) |
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87 |
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88 return action |
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89 |
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90 def nonoverlap(d1, d2, d3): |
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91 "Return list of elements in d1 not in d2 or d3" |
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92 |
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93 l = [] |
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94 for d in d1: |
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95 if d not in d3 and d not in d2: |
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96 l.append(d) |
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97 |
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98 l.sort() |
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99 return l |
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100 |
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101 def findold(fctx, limit): |
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102 "find files that path was copied from, back to linkrev limit" |
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103 |
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104 old = {} |
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105 orig = fctx.path() |
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106 visit = [fctx] |
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107 while visit: |
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108 fc = visit.pop() |
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109 if fc.rev() < limit: |
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110 continue |
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111 if fc.path() != orig and fc.path() not in old: |
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112 old[fc.path()] = 1 |
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113 visit += fc.parents() |
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114 |
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115 old = old.keys() |
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116 old.sort() |
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117 return old |
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118 |
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119 def findcopies(repo, m1, m2, ma, limit): |
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120 """ |
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121 Find moves and copies between m1 and m2 back to limit linkrev |
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122 """ |
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123 |
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124 if not repo.ui.configbool("merge", "followcopies", True): |
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125 return {} |
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126 |
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127 # avoid silly behavior for update from empty dir |
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128 if not m1: |
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129 return {} |
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130 |
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131 dcopies = repo.dirstate.copies() |
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132 copy = {} |
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133 match = {} |
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134 u1 = nonoverlap(m1, m2, ma) |
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135 u2 = nonoverlap(m2, m1, ma) |
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136 ctx = util.cachefunc(lambda f,n: repo.filectx(f, fileid=n[:20])) |
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137 |
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138 def checkpair(c, f2, man): |
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139 ''' check if an apparent pair actually matches ''' |
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140 c2 = ctx(f2, man[f2]) |
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141 ca = c.ancestor(c2) |
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142 if ca and ca.path() == c.path() or ca.path() == c2.path(): |
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143 copy[c.path()] = f2 |
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144 copy[f2] = c.path() |
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145 |
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146 for f in u1: |
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147 c = ctx(dcopies.get(f, f), m1[f]) |
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148 for of in findold(c, limit): |
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149 if of in m2: |
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150 checkpair(c, of, m2) |
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151 else: |
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152 match.setdefault(of, []).append(f) |
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153 |
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154 for f in u2: |
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155 c = ctx(f, m2[f]) |
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156 for of in findold(c, limit): |
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157 if of in m1: |
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158 checkpair(c, of, m1) |
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159 elif of in match: |
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160 for mf in match[of]: |
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161 checkpair(c, mf, m1) |
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162 |
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163 return copy |
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164 |
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165 def manifestmerge(repo, p1, p2, pa, overwrite, partial): |
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166 """ |
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167 Merge p1 and p2 with ancestor ma and generate merge action list |
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168 |
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169 overwrite = whether we clobber working files |
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170 partial = function to filter file lists |
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171 """ |
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172 |
3320 | 173 repo.ui.note(_("resolving manifests\n")) |
174 repo.ui.debug(_(" overwrite %s partial %s\n") % (overwrite, bool(partial))) | |
175 repo.ui.debug(_(" ancestor %s local %s remote %s\n") % (pa, p1, p2)) | |
176 | |
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177 m1 = p1.manifest() |
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178 m2 = p2.manifest() |
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179 ma = pa.manifest() |
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180 backwards = (pa == p2) |
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182 copy = {} | |
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183 |
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184 def fmerge(f, f2=None, fa=None): |
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185 """merge executable flags""" |
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186 if not f2: |
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187 f2 = f |
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188 fa = f |
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189 a, b, c = ma.execf(fa), m1.execf(f), m2.execf(f2) |
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190 return ((a^b) | (a^c)) ^ a |
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191 |
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192 def act(msg, m, f, *args): |
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193 repo.ui.debug(" %s: %s -> %s\n" % (f, msg, m)) |
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194 action.append((f, m) + args) |
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195 |
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196 if not (backwards or overwrite): |
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197 copy = findcopies(repo, m1, m2, ma, pa.rev()) |
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198 |
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199 # Compare manifests |
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200 for f, n in m1.iteritems(): |
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201 if partial and not partial(f): |
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202 continue |
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203 if f in m2: |
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204 # are files different? |
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205 if n != m2[f]: |
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206 a = ma.get(f, nullid) |
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207 # are both different from the ancestor? |
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208 if not overwrite and n != a and m2[f] != a: |
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209 act("versions differ", "m", f, f, f, fmerge(f), False) |
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210 # are we clobbering? |
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211 # is remote's version newer? |
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212 # or are we going back in time and clean? |
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213 elif overwrite or m2[f] != a or (backwards and not n[20:]): |
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214 act("remote is newer", "g", f, m2.execf(f)) |
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215 # local is newer, not overwrite, check mode bits |
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216 elif fmerge(f) != m1.execf(f): |
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217 act("update permissions", "e", f, m2.execf(f)) |
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218 # contents same, check mode bits |
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219 elif m1.execf(f) != m2.execf(f): |
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220 if overwrite or fmerge(f) != m1.execf(f): |
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221 act("update permissions", "e", f, m2.execf(f)) |
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222 elif f in copy: |
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223 f2 = copy[f] |
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224 if f in ma: # case 3,20 A/B/A |
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225 act("remote moved", "m", f, f2, f2, fmerge(f, f2, f), True) |
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226 else: |
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227 if f2 in m1: # case 2 A,B/B/B |
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228 act("local copied", "m", |
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229 f, f2, f, fmerge(f, f2, f2), False) |
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230 else: # case 4,21 A/B/B |
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231 act("local moved", "m", |
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232 f, f2, f, fmerge(f, f2, f2), False) |
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233 elif f in ma: |
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234 if n != ma[f] and not overwrite: |
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235 if repo.ui.prompt( |
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236 (_(" local changed %s which remote deleted\n") % f) + |
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237 _("(k)eep or (d)elete?"), _("[kd]"), _("k")) == _("d"): |
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238 act("prompt delete", "r", f) |
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239 else: |
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240 act("other deleted", "r", f) |
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241 else: |
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242 # file is created on branch or in working directory |
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243 if (overwrite and n[20:] != "u") or (backwards and not n[20:]): |
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244 act("remote deleted", "r", f) |
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245 |
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246 for f, n in m2.iteritems(): |
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247 if partial and not partial(f): |
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248 continue |
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249 if f in m1: |
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250 continue |
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251 if f in copy: |
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252 f2 = copy[f] |
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253 if f2 not in m2: # already seen |
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254 continue |
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255 # rename case 1, A/A,B/A |
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256 act("remote copied", "m", f2, f, f, fmerge(f2, f, f2), False) |
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257 elif f in ma: |
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258 if overwrite or backwards: |
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259 act("recreating", "g", f, m2.execf(f)) |
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260 elif n != ma[f]: |
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261 if repo.ui.prompt( |
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262 (_("remote changed %s which local deleted\n") % f) + |
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263 _("(k)eep or (d)elete?"), _("[kd]"), _("k")) == _("k"): |
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264 act("prompt recreating", "g", f, m2.execf(f)) |
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265 else: |
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266 act("remote created", "g", f, m2.execf(f)) |
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267 |
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268 return action |
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269 |
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270 def applyupdates(repo, action, wctx, mctx): |
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271 "apply the merge action list to the working directory" |
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272 |
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273 updated, merged, removed, unresolved = 0, 0, 0, 0 |
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274 action.sort() |
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275 for a in action: |
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276 f, m = a[:2] |
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277 if f[0] == "/": |
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278 continue |
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279 if m == "r": # remove |
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280 repo.ui.note(_("removing %s\n") % f) |
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281 util.audit_path(f) |
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282 try: |
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283 util.unlink(repo.wjoin(f)) |
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284 except OSError, inst: |
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285 if inst.errno != errno.ENOENT: |
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286 repo.ui.warn(_("update failed to remove %s: %s!\n") % |
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287 (f, inst.strerror)) |
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288 removed +=1 |
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289 elif m == "m": # merge |
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290 f2, fd, flag, move = a[2:] |
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291 r = filemerge(repo, f, f2, wctx, mctx) |
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292 if r > 0: |
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293 unresolved += 1 |
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294 else: |
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295 if r is None: |
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296 updated += 1 |
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297 else: |
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298 merged += 1 |
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299 if f != fd: |
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300 repo.ui.debug(_("copying %s to %s\n") % (f, fd)) |
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301 repo.wwrite(fd, repo.wread(f)) |
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302 if move: |
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303 repo.ui.debug(_("removing %s\n") % f) |
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304 os.unlink(repo.wjoin(f)) |
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305 util.set_exec(repo.wjoin(fd), flag) |
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306 elif m == "g": # get |
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307 flag = a[2] |
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308 repo.ui.note(_("getting %s\n") % f) |
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309 t = mctx.filectx(f).data() |
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310 repo.wwrite(f, t) |
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311 util.set_exec(repo.wjoin(f), flag) |
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312 updated += 1 |
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313 elif m == "e": # exec |
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314 flag = a[2] |
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315 util.set_exec(repo.wjoin(f), flag) |
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316 |
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317 return updated, merged, removed, unresolved |
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318 |
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319 def recordupdates(repo, action, branchmerge): |
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320 "record merge actions to the dirstate" |
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321 |
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322 for a in action: |
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323 f, m = a[:2] |
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324 if m == "r": # remove |
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325 if branchmerge: |
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326 repo.dirstate.update([f], 'r') |
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327 else: |
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328 repo.dirstate.forget([f]) |
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329 elif m == "f": # forget |
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330 repo.dirstate.forget([f]) |
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331 elif m == "g": # get |
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332 if branchmerge: |
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333 repo.dirstate.update([f], 'n', st_mtime=-1) |
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334 else: |
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335 repo.dirstate.update([f], 'n') |
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336 elif m == "m": # merge |
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337 f2, fd, flag, move = a[2:] |
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338 if branchmerge: |
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339 # We've done a branch merge, mark this file as merged |
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340 # so that we properly record the merger later |
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341 repo.dirstate.update([fd], 'm') |
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342 if f != f2: # copy/rename |
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343 if move: |
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344 repo.dirstate.update([f], 'r') |
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345 if f != fd: |
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346 repo.dirstate.copy(f, fd) |
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347 else: |
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348 repo.dirstate.copy(f2, fd) |
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349 else: |
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350 # We've update-merged a locally modified file, so |
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351 # we set the dirstate to emulate a normal checkout |
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352 # of that file some time in the past. Thus our |
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353 # merge will appear as a normal local file |
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354 # modification. |
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355 repo.dirstate.update([fd], 'n', st_size=-1, st_mtime=-1) |
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356 if move: |
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357 repo.dirstate.forget([f]) |
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358 |
3323
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359 def update(repo, node, branchmerge, force, partial, wlock): |
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360 """ |
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361 Perform a merge between the working directory and the given node |
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362 |
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363 branchmerge = whether to merge between branches |
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364 force = whether to force branch merging or file overwriting |
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365 partial = a function to filter file lists (dirstate not updated) |
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366 wlock = working dir lock, if already held |
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367 """ |
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368 |
2826
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369 if not wlock: |
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370 wlock = repo.wlock() |
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371 |
3320 | 372 overwrite = force and not branchmerge |
373 forcemerge = force and branchmerge | |
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374 wc = repo.workingctx() |
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375 pl = wc.parents() |
3320 | 376 p1, p2 = pl[0], repo.changectx(node) |
377 pa = p1.ancestor(p2) | |
378 fp1, fp2, xp1, xp2 = p1.node(), p2.node(), str(p1), str(p2) | |
379 | |
380 ### check phase | |
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381 if not overwrite and len(pl) > 1: |
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382 raise util.Abort(_("outstanding uncommitted merges")) |
3320 | 383 if pa == p1 or pa == p2: # is there a linear path from p1 to p2? |
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384 if branchmerge: |
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385 raise util.Abort(_("there is nothing to merge, just use " |
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386 "'hg update' or look at 'hg heads'")) |
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387 elif not (overwrite or branchmerge): |
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388 raise util.Abort(_("update spans branches, use 'hg merge' " |
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389 "or 'hg update -C' to lose changes")) |
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390 if branchmerge and not forcemerge: |
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391 if wc.modified() or wc.added() or wc.removed(): |
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392 raise util.Abort(_("outstanding uncommitted changes")) |
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393 |
3320 | 394 ### calculate phase |
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395 action = [] |
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396 if not force: |
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397 checkunknown(wc, p2) |
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398 if not branchmerge: |
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399 action += forgetremoved(wc, p2) |
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400 action += manifestmerge(repo, wc, p2, pa, overwrite, partial) |
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401 |
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402 ### apply phase |
3320 | 403 if not branchmerge: # just jump to the new rev |
404 fp1, fp2, xp1, xp2 = fp2, nullid, xp2, '' | |
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405 if not partial: |
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406 repo.hook('preupdate', throw=True, parent1=xp1, parent2=xp2) |
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407 |
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408 stats = applyupdates(repo, action, wc, p2) |
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409 |
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410 if not partial: |
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411 recordupdates(repo, action, branchmerge) |
3320 | 412 repo.dirstate.setparents(fp1, fp2) |
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413 repo.hook('update', parent1=xp1, parent2=xp2, error=stats[3]) |
3441 | 414 if not branchmerge: |
3442 | 415 repo.opener("branch", "w").write(p2.branch() + "\n") |
3320 | 416 |
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417 return stats |
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418 |