Mercurial > hg
annotate mercurial/commit.py @ 45328:e52031f5e046
commitctx: create the ChangingFiles object directly in the various case
No need to compute all data then create the object, we can create it early and
directly store data in it. We start simple by moving create higher in the
function, but the end goal is to eventually move the creation inside the
`_process_files` function to take advantage of the object there.
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Sat, 25 Jul 2020 16:13:32 +0200 |
parents | 6de4c5647db3 |
children | dcbad0f17d76 |
rev | line source |
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1 # commit.py - fonction to perform commit |
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2 # |
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3 # This software may be used and distributed according to the terms of the |
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4 # GNU General Public License version 2 or any later version. |
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5 |
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6 from __future__ import absolute_import |
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7 |
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8 import errno |
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9 |
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10 from .i18n import _ |
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11 from .node import ( |
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12 hex, |
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13 nullid, |
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14 nullrev, |
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15 ) |
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16 |
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17 from . import ( |
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18 context, |
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19 mergestate, |
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20 metadata, |
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21 phases, |
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22 scmutil, |
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23 subrepoutil, |
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24 ) |
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25 |
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26 |
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27 def _write_copy_meta(repo): |
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28 """return a (changelog, filelog) boolean tuple |
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29 |
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30 changelog: copy related information should be stored in the changeset |
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31 filelof: copy related information should be written in the file revision |
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32 """ |
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33 if repo.filecopiesmode == b'changeset-sidedata': |
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34 writechangesetcopy = True |
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35 writefilecopymeta = True |
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36 else: |
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37 writecopiesto = repo.ui.config(b'experimental', b'copies.write-to') |
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38 writefilecopymeta = writecopiesto != b'changeset-only' |
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39 writechangesetcopy = writecopiesto in ( |
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40 b'changeset-only', |
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41 b'compatibility', |
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42 ) |
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43 return writechangesetcopy, writefilecopymeta |
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44 |
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45 |
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46 def commitctx(repo, ctx, error=False, origctx=None): |
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47 """Add a new revision to the target repository. |
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48 Revision information is passed via the context argument. |
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49 |
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50 ctx.files() should list all files involved in this commit, i.e. |
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51 modified/added/removed files. On merge, it may be wider than the |
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52 ctx.files() to be committed, since any file nodes derived directly |
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53 from p1 or p2 are excluded from the committed ctx.files(). |
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54 |
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55 origctx is for convert to work around the problem that bug |
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56 fixes to the files list in changesets change hashes. For |
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57 convert to be the identity, it can pass an origctx and this |
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58 function will use the same files list when it makes sense to |
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59 do so. |
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60 """ |
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61 repo = repo.unfiltered() |
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62 |
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63 p1, p2 = ctx.p1(), ctx.p2() |
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64 user = ctx.user() |
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65 |
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66 with repo.lock(), repo.transaction(b"commit") as tr: |
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67 mn, files = _prepare_files(tr, ctx, error=error, origctx=origctx) |
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68 |
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69 extra = ctx.extra().copy() |
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70 |
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71 if extra is not None: |
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72 for name in ( |
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73 b'p1copies', |
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74 b'p2copies', |
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75 b'filesadded', |
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76 b'filesremoved', |
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77 ): |
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78 extra.pop(name, None) |
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79 if repo.changelog._copiesstorage == b'extra': |
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80 extra = _extra_with_copies(repo, extra, files) |
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81 |
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82 # update changelog |
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83 repo.ui.note(_(b"committing changelog\n")) |
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84 repo.changelog.delayupdate(tr) |
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85 n = repo.changelog.add( |
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86 mn, |
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87 files, |
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88 ctx.description(), |
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89 tr, |
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90 p1.node(), |
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91 p2.node(), |
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92 user, |
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93 ctx.date(), |
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94 extra, |
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95 ) |
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96 xp1, xp2 = p1.hex(), p2 and p2.hex() or b'' |
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97 repo.hook( |
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98 b'pretxncommit', throw=True, node=hex(n), parent1=xp1, parent2=xp2, |
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99 ) |
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100 # set the new commit is proper phase |
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101 targetphase = subrepoutil.newcommitphase(repo.ui, ctx) |
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102 if targetphase: |
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103 # retract boundary do not alter parent changeset. |
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104 # if a parent have higher the resulting phase will |
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105 # be compliant anyway |
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106 # |
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107 # if minimal phase was 0 we don't need to retract anything |
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108 phases.registernew(repo, tr, targetphase, [n]) |
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109 return n |
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110 |
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111 |
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112 def _prepare_files(tr, ctx, error=False, origctx=None): |
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113 repo = ctx.repo() |
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114 p1 = ctx.p1() |
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115 |
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116 writechangesetcopy, writefilecopymeta = _write_copy_meta(repo) |
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117 |
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118 if ctx.manifestnode(): |
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119 # reuse an existing manifest revision |
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120 repo.ui.debug(b'reusing known manifest\n') |
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121 mn = ctx.manifestnode() |
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122 files = metadata.ChangingFiles() |
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123 files.update_touched(ctx.files()) |
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124 if writechangesetcopy: |
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125 files.update_added(ctx.filesadded()) |
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126 files.update_removed(ctx.filesremoved()) |
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127 elif not ctx.files(): |
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128 repo.ui.debug(b'reusing manifest from p1 (no file change)\n') |
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129 mn = p1.manifestnode() |
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130 files = metadata.ChangingFiles() |
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131 else: |
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132 mn, touched, added, removed = _process_files(tr, ctx, error=error) |
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133 files = metadata.ChangingFiles() |
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134 files.update_touched(touched) |
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135 if added: |
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136 files.update_added(added) |
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137 if removed: |
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138 files.update_removed(removed) |
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139 |
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140 if origctx and origctx.manifestnode() == mn: |
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141 origfiles = origctx.files() |
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142 assert files.touched.issubset(origfiles) |
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143 files.update_touched(origfiles) |
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144 |
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145 if writechangesetcopy: |
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146 files.update_copies_from_p1(ctx.p1copies()) |
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147 files.update_copies_from_p2(ctx.p2copies()) |
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148 |
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149 return mn, files |
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150 |
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151 |
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152 def _process_files(tr, ctx, error=False): |
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153 repo = ctx.repo() |
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154 p1 = ctx.p1() |
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155 p2 = ctx.p2() |
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156 |
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157 writechangesetcopy, writefilecopymeta = _write_copy_meta(repo) |
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158 |
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159 m1ctx = p1.manifestctx() |
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160 m2ctx = p2.manifestctx() |
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161 mctx = m1ctx.copy() |
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162 |
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163 m = mctx.read() |
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164 m1 = m1ctx.read() |
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165 m2 = m2ctx.read() |
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166 |
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167 # check in files |
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168 added = [] |
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169 filesadded = [] |
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170 removed = list(ctx.removed()) |
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171 touched = [] |
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172 linkrev = len(repo) |
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173 repo.ui.note(_(b"committing files:\n")) |
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174 uipathfn = scmutil.getuipathfn(repo) |
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175 for f in sorted(ctx.modified() + ctx.added()): |
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176 repo.ui.note(uipathfn(f) + b"\n") |
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177 try: |
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178 fctx = ctx[f] |
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179 if fctx is None: |
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180 removed.append(f) |
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181 else: |
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182 added.append(f) |
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183 m[f], is_touched = _filecommit( |
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184 repo, fctx, m1, m2, linkrev, tr, writefilecopymeta, |
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185 ) |
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186 if is_touched: |
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187 touched.append(f) |
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188 if is_touched == 'added': |
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189 filesadded.append(f) |
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190 m.setflag(f, fctx.flags()) |
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191 except OSError: |
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192 repo.ui.warn(_(b"trouble committing %s!\n") % uipathfn(f)) |
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193 raise |
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194 except IOError as inst: |
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195 errcode = getattr(inst, 'errno', errno.ENOENT) |
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196 if error or errcode and errcode != errno.ENOENT: |
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197 repo.ui.warn(_(b"trouble committing %s!\n") % uipathfn(f)) |
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198 raise |
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199 |
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200 # update manifest |
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201 removed = [f for f in removed if f in m1 or f in m2] |
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202 drop = sorted([f for f in removed if f in m]) |
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203 for f in drop: |
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204 del m[f] |
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205 if p2.rev() != nullrev: |
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206 rf = metadata.get_removal_filter(ctx, (p1, p2, m1, m2)) |
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207 removed = [f for f in removed if not rf(f)] |
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208 |
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209 touched.extend(removed) |
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210 |
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211 files = touched |
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212 mn = _commit_manifest(tr, linkrev, ctx, mctx, m, files, added, drop) |
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213 |
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214 return mn, files, filesadded, removed |
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215 |
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216 |
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217 def _filecommit( |
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218 repo, fctx, manifest1, manifest2, linkrev, tr, includecopymeta, |
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219 ): |
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220 """ |
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221 commit an individual file as part of a larger transaction |
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222 |
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223 input: |
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224 |
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225 fctx: a file context with the content we are trying to commit |
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226 manifest1: manifest of changeset first parent |
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227 manifest2: manifest of changeset second parent |
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228 linkrev: revision number of the changeset being created |
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229 tr: current transation |
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230 individual: boolean, set to False to skip storing the copy data |
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231 (only used by the Google specific feature of using |
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232 changeset extra as copy source of truth). |
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233 |
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234 output: (filenode, touched) |
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235 |
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236 filenode: the filenode that should be used by this changeset |
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237 touched: one of: None (mean untouched), 'added' or 'modified' |
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238 """ |
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239 |
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240 fname = fctx.path() |
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241 fparent1 = manifest1.get(fname, nullid) |
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242 fparent2 = manifest2.get(fname, nullid) |
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243 touched = None |
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244 if fparent1 == fparent2 == nullid: |
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245 touched = 'added' |
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246 |
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247 if isinstance(fctx, context.filectx): |
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248 # This block fast path most comparisons which are usually done. It |
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249 # assumes that bare filectx is used and no merge happened, hence no |
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250 # need to create a new file revision in this case. |
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251 node = fctx.filenode() |
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252 if node in [fparent1, fparent2]: |
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253 repo.ui.debug(b'reusing %s filelog entry\n' % fname) |
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254 if ( |
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255 fparent1 != nullid and manifest1.flags(fname) != fctx.flags() |
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256 ) or ( |
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257 fparent2 != nullid and manifest2.flags(fname) != fctx.flags() |
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258 ): |
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259 touched = 'modified' |
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260 return node, touched |
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261 |
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262 flog = repo.file(fname) |
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263 meta = {} |
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264 cfname = fctx.copysource() |
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265 fnode = None |
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266 |
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267 if cfname and cfname != fname: |
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268 # Mark the new revision of this file as a copy of another |
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269 # file. This copy data will effectively act as a parent |
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270 # of this new revision. If this is a merge, the first |
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271 # parent will be the nullid (meaning "look up the copy data") |
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272 # and the second one will be the other parent. For example: |
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273 # |
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274 # 0 --- 1 --- 3 rev1 changes file foo |
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275 # \ / rev2 renames foo to bar and changes it |
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276 # \- 2 -/ rev3 should have bar with all changes and |
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277 # should record that bar descends from |
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278 # bar in rev2 and foo in rev1 |
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279 # |
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280 # this allows this merge to succeed: |
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281 # |
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282 # 0 --- 1 --- 3 rev4 reverts the content change from rev2 |
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283 # \ / merging rev3 and rev4 should use bar@rev2 |
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284 # \- 2 --- 4 as the merge base |
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285 # |
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286 |
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287 cnode = manifest1.get(cfname) |
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288 newfparent = fparent2 |
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289 |
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290 if manifest2: # branch merge |
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291 if fparent2 == nullid or cnode is None: # copied on remote side |
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292 if cfname in manifest2: |
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293 cnode = manifest2[cfname] |
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294 newfparent = fparent1 |
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295 |
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296 # Here, we used to search backwards through history to try to find |
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297 # where the file copy came from if the source of a copy was not in |
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298 # the parent directory. However, this doesn't actually make sense to |
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299 # do (what does a copy from something not in your working copy even |
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300 # mean?) and it causes bugs (eg, issue4476). Instead, we will warn |
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301 # the user that copy information was dropped, so if they didn't |
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302 # expect this outcome it can be fixed, but this is the correct |
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303 # behavior in this circumstance. |
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304 |
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305 if cnode: |
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306 repo.ui.debug(b" %s: copy %s:%s\n" % (fname, cfname, hex(cnode))) |
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307 if includecopymeta: |
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308 meta[b"copy"] = cfname |
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309 meta[b"copyrev"] = hex(cnode) |
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310 fparent1, fparent2 = nullid, newfparent |
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311 else: |
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312 repo.ui.warn( |
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313 _( |
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314 b"warning: can't find ancestor for '%s' " |
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315 b"copied from '%s'!\n" |
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|
316 ) |
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317 % (fname, cfname) |
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|
318 ) |
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319 |
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320 elif fparent1 == nullid: |
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321 fparent1, fparent2 = fparent2, nullid |
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322 elif fparent2 != nullid: |
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323 # is one parent an ancestor of the other? |
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324 fparentancestors = flog.commonancestorsheads(fparent1, fparent2) |
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325 if fparent1 in fparentancestors: |
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326 fparent1, fparent2 = fparent2, nullid |
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327 elif fparent2 in fparentancestors: |
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328 fparent2 = nullid |
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329 elif not fparentancestors: |
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330 # TODO: this whole if-else might be simplified much more |
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331 ms = mergestate.mergestate.read(repo) |
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332 if ( |
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333 fname in ms |
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334 and ms[fname] == mergestate.MERGE_RECORD_MERGED_OTHER |
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335 ): |
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336 fparent1, fparent2 = fparent2, nullid |
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337 |
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338 # is the file changed? |
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339 text = fctx.data() |
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340 if fparent2 != nullid or meta or flog.cmp(fparent1, text): |
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341 if touched is None: # do not overwrite added |
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342 touched = 'modified' |
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343 fnode = flog.add(text, meta, tr, linkrev, fparent1, fparent2) |
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344 # are just the flags changed during merge? |
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345 elif fname in manifest1 and manifest1.flags(fname) != fctx.flags(): |
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346 touched = 'modified' |
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347 fnode = fparent1 |
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348 else: |
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349 fnode = fparent1 |
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350 return fnode, touched |
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351 |
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352 |
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353 def _commit_manifest(tr, linkrev, ctx, mctx, manifest, files, added, drop): |
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354 """make a new manifest entry (or reuse a new one) |
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355 |
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356 given an initialised manifest context and precomputed list of |
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357 - files: files affected by the commit |
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358 - added: new entries in the manifest |
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359 - drop: entries present in parents but absent of this one |
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360 |
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361 Create a new manifest revision, reuse existing ones if possible. |
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362 |
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363 Return the nodeid of the manifest revision. |
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364 """ |
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365 repo = ctx.repo() |
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366 |
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367 md = None |
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368 |
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369 # all this is cached, so it is find to get them all from the ctx. |
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370 p1 = ctx.p1() |
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371 p2 = ctx.p2() |
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372 m1ctx = p1.manifestctx() |
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373 |
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374 m1 = m1ctx.read() |
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375 |
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376 if not files: |
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377 # if no "files" actually changed in terms of the changelog, |
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378 # try hard to detect unmodified manifest entry so that the |
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379 # exact same commit can be reproduced later on convert. |
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380 md = m1.diff(manifest, scmutil.matchfiles(repo, ctx.files())) |
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381 if not files and md: |
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382 repo.ui.debug( |
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383 b'not reusing manifest (no file change in ' |
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384 b'changelog, but manifest differs)\n' |
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385 ) |
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386 if files or md: |
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387 repo.ui.note(_(b"committing manifest\n")) |
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388 # we're using narrowmatch here since it's already applied at |
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389 # other stages (such as dirstate.walk), so we're already |
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390 # ignoring things outside of narrowspec in most cases. The |
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391 # one case where we might have files outside the narrowspec |
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392 # at this point is merges, and we already error out in the |
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393 # case where the merge has files outside of the narrowspec, |
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394 # so this is safe. |
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395 mn = mctx.write( |
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396 tr, |
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397 linkrev, |
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398 p1.manifestnode(), |
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399 p2.manifestnode(), |
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400 added, |
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401 drop, |
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402 match=repo.narrowmatch(), |
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403 ) |
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404 else: |
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405 repo.ui.debug( |
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406 b'reusing manifest from p1 (listed files ' b'actually unchanged)\n' |
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407 ) |
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408 mn = p1.manifestnode() |
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409 |
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410 return mn |
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411 |
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412 |
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413 def _extra_with_copies(repo, extra, files): |
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414 """encode copy information into a `extra` dictionnary""" |
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415 p1copies = files.copied_from_p1 |
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416 p2copies = files.copied_from_p2 |
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417 filesadded = files.added |
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418 filesremoved = files.removed |
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419 files = sorted(files.touched) |
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420 if not _write_copy_meta(repo)[1]: |
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421 # If writing only to changeset extras, use None to indicate that |
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422 # no entry should be written. If writing to both, write an empty |
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423 # entry to prevent the reader from falling back to reading |
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424 # filelogs. |
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425 p1copies = p1copies or None |
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426 p2copies = p2copies or None |
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427 filesadded = filesadded or None |
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commitctx: gather more code dealing with copy-in-extra
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45250
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428 filesremoved = filesremoved or None |
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commitctx: gather more code dealing with copy-in-extra
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
45250
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429 |
45249
b3040b6739ce
commitctx: extract copy information encoding into extra into commit.py
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
45248
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430 extrasentries = p1copies, p2copies, filesadded, filesremoved |
b3040b6739ce
commitctx: extract copy information encoding into extra into commit.py
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
45248
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431 if extra is None and any(x is not None for x in extrasentries): |
b3040b6739ce
commitctx: extract copy information encoding into extra into commit.py
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
45248
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432 extra = {} |
b3040b6739ce
commitctx: extract copy information encoding into extra into commit.py
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
45248
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433 if p1copies is not None: |
b3040b6739ce
commitctx: extract copy information encoding into extra into commit.py
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
45248
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434 p1copies = metadata.encodecopies(files, p1copies) |
b3040b6739ce
commitctx: extract copy information encoding into extra into commit.py
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
45248
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435 extra[b'p1copies'] = p1copies |
b3040b6739ce
commitctx: extract copy information encoding into extra into commit.py
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
45248
diff
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436 if p2copies is not None: |
b3040b6739ce
commitctx: extract copy information encoding into extra into commit.py
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
45248
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437 p2copies = metadata.encodecopies(files, p2copies) |
b3040b6739ce
commitctx: extract copy information encoding into extra into commit.py
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
45248
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438 extra[b'p2copies'] = p2copies |
b3040b6739ce
commitctx: extract copy information encoding into extra into commit.py
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
45248
diff
changeset
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439 if filesadded is not None: |
b3040b6739ce
commitctx: extract copy information encoding into extra into commit.py
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
45248
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440 filesadded = metadata.encodefileindices(files, filesadded) |
b3040b6739ce
commitctx: extract copy information encoding into extra into commit.py
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
45248
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441 extra[b'filesadded'] = filesadded |
b3040b6739ce
commitctx: extract copy information encoding into extra into commit.py
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
45248
diff
changeset
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442 if filesremoved is not None: |
b3040b6739ce
commitctx: extract copy information encoding into extra into commit.py
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
45248
diff
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443 filesremoved = metadata.encodefileindices(files, filesremoved) |
b3040b6739ce
commitctx: extract copy information encoding into extra into commit.py
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
45248
diff
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444 extra[b'filesremoved'] = filesremoved |
b3040b6739ce
commitctx: extract copy information encoding into extra into commit.py
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
45248
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445 return extra |