Mercurial > hg
annotate mercurial/commit.py @ 45715:0428978bca22
mergestate: add `allextras()` to get all extras
`extras()` can only be used for getting extra for a file. However at
couple of places in code, we wanted to iterate over all the extras stored with
the mergestate and they were accessing the private `_stateextras`.
We add a new function for this.
Differential Revision: https://phab.mercurial-scm.org/D9190
author | Pulkit Goyal <7895pulkit@gmail.com> |
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date | Sat, 10 Oct 2020 12:43:04 +0530 |
parents | 60c46cc28bf4 |
children | 067707e026b4 5d65e04b6a80 |
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 files = metadata.ChangingFiles() |
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118 ms = mergestate.mergestate.read(repo) |
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119 salvaged = _get_salvaged(repo, ms, ctx) |
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120 for s in salvaged: |
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121 files.mark_salvaged(s) |
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122 |
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123 if ctx.manifestnode(): |
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124 # reuse an existing manifest revision |
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125 repo.ui.debug(b'reusing known manifest\n') |
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126 mn = ctx.manifestnode() |
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127 files.update_touched(ctx.files()) |
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128 if writechangesetcopy: |
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129 files.update_added(ctx.filesadded()) |
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130 files.update_removed(ctx.filesremoved()) |
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131 elif not ctx.files(): |
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132 repo.ui.debug(b'reusing manifest from p1 (no file change)\n') |
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133 mn = p1.manifestnode() |
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134 else: |
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135 mn = _process_files(tr, ctx, ms, files, error=error) |
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136 |
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137 if origctx and origctx.manifestnode() == mn: |
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138 origfiles = origctx.files() |
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139 assert files.touched.issubset(origfiles) |
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140 files.update_touched(origfiles) |
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141 |
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142 if writechangesetcopy: |
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143 files.update_copies_from_p1(ctx.p1copies()) |
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144 files.update_copies_from_p2(ctx.p2copies()) |
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145 |
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146 return mn, files |
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147 |
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148 |
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149 def _get_salvaged(repo, ms, ctx): |
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150 """ returns a list of salvaged files |
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151 |
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152 returns empty list if config option which process salvaged files are |
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153 not enabled """ |
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154 salvaged = [] |
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155 copy_sd = repo.filecopiesmode == b'changeset-sidedata' |
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156 if copy_sd and len(ctx.parents()) > 1: |
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157 if ms.active(): |
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158 for fname in sorted(ms.allextras().keys()): |
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159 might_removed = ms.extras(fname).get(b'merge-removal-candidate') |
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160 if might_removed == b'yes': |
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161 if fname in ctx: |
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162 salvaged.append(fname) |
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163 return salvaged |
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164 |
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165 |
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166 def _process_files(tr, ctx, ms, files, error=False): |
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167 repo = ctx.repo() |
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168 p1 = ctx.p1() |
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169 p2 = ctx.p2() |
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170 |
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171 writechangesetcopy, writefilecopymeta = _write_copy_meta(repo) |
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172 |
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173 m1ctx = p1.manifestctx() |
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174 m2ctx = p2.manifestctx() |
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175 mctx = m1ctx.copy() |
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176 |
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177 m = mctx.read() |
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178 m1 = m1ctx.read() |
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179 m2 = m2ctx.read() |
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180 |
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181 # check in files |
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182 added = [] |
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183 removed = list(ctx.removed()) |
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184 linkrev = len(repo) |
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185 repo.ui.note(_(b"committing files:\n")) |
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186 uipathfn = scmutil.getuipathfn(repo) |
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187 for f in sorted(ctx.modified() + ctx.added()): |
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188 repo.ui.note(uipathfn(f) + b"\n") |
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189 try: |
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190 fctx = ctx[f] |
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191 if fctx is None: |
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192 removed.append(f) |
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193 else: |
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194 added.append(f) |
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195 m[f], is_touched = _filecommit( |
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196 repo, fctx, m1, m2, linkrev, tr, writefilecopymeta, ms |
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197 ) |
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198 if is_touched: |
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199 if is_touched == 'added': |
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200 files.mark_added(f) |
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201 elif is_touched == 'merged': |
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202 files.mark_merged(f) |
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203 else: |
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204 files.mark_touched(f) |
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205 m.setflag(f, fctx.flags()) |
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206 except OSError: |
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207 repo.ui.warn(_(b"trouble committing %s!\n") % uipathfn(f)) |
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208 raise |
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209 except IOError as inst: |
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210 errcode = getattr(inst, 'errno', errno.ENOENT) |
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211 if error or errcode and errcode != errno.ENOENT: |
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212 repo.ui.warn(_(b"trouble committing %s!\n") % uipathfn(f)) |
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213 raise |
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214 |
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215 # update manifest |
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216 removed = [f for f in removed if f in m1 or f in m2] |
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217 drop = sorted([f for f in removed if f in m]) |
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218 for f in drop: |
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219 del m[f] |
45331
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220 if p2.rev() == nullrev: |
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221 files.update_removed(removed) |
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222 else: |
45236
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223 rf = metadata.get_removal_filter(ctx, (p1, p2, m1, m2)) |
45331
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224 for f in removed: |
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225 if not rf(f): |
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226 files.mark_removed(f) |
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227 |
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228 mn = _commit_manifest(tr, linkrev, ctx, mctx, m, files.touched, added, drop) |
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229 |
45708
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commit: pass ChangingFiles object as argument to _process_files
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230 return mn |
45236
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231 |
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232 |
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233 def _filecommit( |
45443
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commit: pass mergestate into _filecommit() instead of re-reading it
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234 repo, fctx, manifest1, manifest2, linkrev, tr, includecopymeta, ms, |
45204
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235 ): |
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236 """ |
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237 commit an individual file as part of a larger transaction |
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238 |
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239 input: |
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240 |
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241 fctx: a file context with the content we are trying to commit |
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242 manifest1: manifest of changeset first parent |
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243 manifest2: manifest of changeset second parent |
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244 linkrev: revision number of the changeset being created |
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245 tr: current transation |
45432
f52b0297acc8
commit: fix a wrong argument name in documentation
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parents:
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246 includecopymeta: boolean, set to False to skip storing the copy data |
45204
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247 (only used by the Google specific feature of using |
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248 changeset extra as copy source of truth). |
45443
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commit: pass mergestate into _filecommit() instead of re-reading it
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249 ms: mergestate object |
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250 |
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251 output: (filenode, touched) |
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252 |
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253 filenode: the filenode that should be used by this changeset |
45223
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254 touched: one of: None (mean untouched), 'added' or 'modified' |
45204
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255 """ |
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256 |
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257 fname = fctx.path() |
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258 fparent1 = manifest1.get(fname, nullid) |
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259 fparent2 = manifest2.get(fname, nullid) |
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260 touched = None |
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261 if fparent1 == fparent2 == nullid: |
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262 touched = 'added' |
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263 |
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264 if isinstance(fctx, context.filectx): |
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265 # This block fast path most comparisons which are usually done. It |
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266 # assumes that bare filectx is used and no merge happened, hence no |
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267 # need to create a new file revision in this case. |
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268 node = fctx.filenode() |
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269 if node in [fparent1, fparent2]: |
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270 repo.ui.debug(b'reusing %s filelog entry\n' % fname) |
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271 if ( |
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272 fparent1 != nullid and manifest1.flags(fname) != fctx.flags() |
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273 ) or ( |
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274 fparent2 != nullid and manifest2.flags(fname) != fctx.flags() |
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275 ): |
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276 touched = 'modified' |
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277 return node, touched |
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278 |
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279 flog = repo.file(fname) |
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280 meta = {} |
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281 cfname = fctx.copysource() |
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282 fnode = None |
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283 |
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284 if cfname and cfname != fname: |
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285 # Mark the new revision of this file as a copy of another |
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286 # file. This copy data will effectively act as a parent |
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287 # of this new revision. If this is a merge, the first |
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288 # parent will be the nullid (meaning "look up the copy data") |
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289 # and the second one will be the other parent. For example: |
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290 # |
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291 # 0 --- 1 --- 3 rev1 changes file foo |
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292 # \ / rev2 renames foo to bar and changes it |
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293 # \- 2 -/ rev3 should have bar with all changes and |
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294 # should record that bar descends from |
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295 # bar in rev2 and foo in rev1 |
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296 # |
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297 # this allows this merge to succeed: |
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298 # |
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299 # 0 --- 1 --- 3 rev4 reverts the content change from rev2 |
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300 # \ / merging rev3 and rev4 should use bar@rev2 |
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301 # \- 2 --- 4 as the merge base |
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302 # |
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303 |
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304 cnode = manifest1.get(cfname) |
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305 newfparent = fparent2 |
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306 |
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307 if manifest2: # branch merge |
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308 if fparent2 == nullid or cnode is None: # copied on remote side |
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309 if cfname in manifest2: |
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310 cnode = manifest2[cfname] |
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311 newfparent = fparent1 |
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312 |
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313 # Here, we used to search backwards through history to try to find |
ce9ee81df9ff
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changeset
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314 # where the file copy came from if the source of a copy was not in |
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315 # the parent directory. However, this doesn't actually make sense to |
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316 # do (what does a copy from something not in your working copy even |
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317 # mean?) and it causes bugs (eg, issue4476). Instead, we will warn |
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318 # the user that copy information was dropped, so if they didn't |
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319 # expect this outcome it can be fixed, but this is the correct |
ce9ee81df9ff
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changeset
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320 # behavior in this circumstance. |
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321 |
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322 if cnode: |
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323 repo.ui.debug(b" %s: copy %s:%s\n" % (fname, cfname, hex(cnode))) |
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324 if includecopymeta: |
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325 meta[b"copy"] = cfname |
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326 meta[b"copyrev"] = hex(cnode) |
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327 fparent1, fparent2 = nullid, newfparent |
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328 else: |
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329 repo.ui.warn( |
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330 _( |
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331 b"warning: can't find ancestor for '%s' " |
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332 b"copied from '%s'!\n" |
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333 ) |
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334 % (fname, cfname) |
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335 ) |
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336 |
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337 elif fparent1 == nullid: |
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338 fparent1, fparent2 = fparent2, nullid |
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339 elif fparent2 != nullid: |
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340 # is one parent an ancestor of the other? |
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341 fparentancestors = flog.commonancestorsheads(fparent1, fparent2) |
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342 if fparent1 in fparentancestors: |
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343 fparent1, fparent2 = fparent2, nullid |
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344 elif fparent2 in fparentancestors: |
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345 fparent2 = nullid |
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346 elif not fparentancestors: |
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347 # TODO: this whole if-else might be simplified much more |
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348 if ( |
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349 ms.active() |
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350 and ms.extras(fname).get(b'filenode-source') == b'other' |
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351 ): |
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352 fparent1, fparent2 = fparent2, nullid |
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353 |
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354 force_new_node = False |
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355 # The file might have been deleted by merge code and user explicitly choose |
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356 # to revert the file and keep it. The other case can be where there is |
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357 # change-delete or delete-change conflict and user explicitly choose to keep |
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358 # the file. The goal is to create a new filenode for users explicit choices |
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359 if ( |
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360 repo.ui.configbool(b'experimental', b'merge-track-salvaged') |
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361 and ms.active() |
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362 and ms.extras(fname).get(b'merge-removal-candidate') == b'yes' |
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363 ): |
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364 force_new_node = True |
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365 # is the file changed? |
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366 text = fctx.data() |
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367 if fparent2 != nullid or meta or flog.cmp(fparent1, text) or force_new_node: |
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368 if touched is None: # do not overwrite added |
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369 if fparent2 == nullid: |
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370 touched = 'modified' |
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371 else: |
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372 touched = 'merged' |
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373 fnode = flog.add(text, meta, tr, linkrev, fparent1, fparent2) |
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374 # are just the flags changed during merge? |
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375 elif fname in manifest1 and manifest1.flags(fname) != fctx.flags(): |
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376 touched = 'modified' |
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377 fnode = fparent1 |
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378 else: |
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379 fnode = fparent1 |
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380 return fnode, touched |
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381 |
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382 |
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383 def _commit_manifest(tr, linkrev, ctx, mctx, manifest, files, added, drop): |
45231
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384 """make a new manifest entry (or reuse a new one) |
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385 |
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386 given an initialised manifest context and precomputed list of |
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387 - files: files affected by the commit |
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388 - added: new entries in the manifest |
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389 - drop: entries present in parents but absent of this one |
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390 |
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391 Create a new manifest revision, reuse existing ones if possible. |
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392 |
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393 Return the nodeid of the manifest revision. |
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394 """ |
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395 repo = ctx.repo() |
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396 |
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397 md = None |
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398 |
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399 # all this is cached, so it is find to get them all from the ctx. |
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400 p1 = ctx.p1() |
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401 p2 = ctx.p2() |
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402 m1ctx = p1.manifestctx() |
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403 |
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404 m1 = m1ctx.read() |
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405 |
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406 if not files: |
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407 # if no "files" actually changed in terms of the changelog, |
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408 # try hard to detect unmodified manifest entry so that the |
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409 # exact same commit can be reproduced later on convert. |
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410 md = m1.diff(manifest, scmutil.matchfiles(repo, ctx.files())) |
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411 if not files and md: |
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412 repo.ui.debug( |
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413 b'not reusing manifest (no file change in ' |
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414 b'changelog, but manifest differs)\n' |
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415 ) |
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416 if files or md: |
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417 repo.ui.note(_(b"committing manifest\n")) |
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418 # we're using narrowmatch here since it's already applied at |
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419 # other stages (such as dirstate.walk), so we're already |
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420 # ignoring things outside of narrowspec in most cases. The |
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421 # one case where we might have files outside the narrowspec |
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422 # at this point is merges, and we already error out in the |
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423 # case where the merge has files outside of the narrowspec, |
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424 # so this is safe. |
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425 mn = mctx.write( |
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426 tr, |
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427 linkrev, |
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428 p1.manifestnode(), |
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429 p2.manifestnode(), |
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430 added, |
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431 drop, |
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432 match=repo.narrowmatch(), |
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433 ) |
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434 else: |
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435 repo.ui.debug( |
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436 b'reusing manifest from p1 (listed files ' b'actually unchanged)\n' |
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437 ) |
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438 mn = p1.manifestnode() |
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439 |
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440 return mn |
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441 |
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442 |
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443 def _extra_with_copies(repo, extra, files): |
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444 """encode copy information into a `extra` dictionnary""" |
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445 p1copies = files.copied_from_p1 |
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446 p2copies = files.copied_from_p2 |
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447 filesadded = files.added |
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448 filesremoved = files.removed |
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449 files = sorted(files.touched) |
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450 if not _write_copy_meta(repo)[1]: |
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451 # If writing only to changeset extras, use None to indicate that |
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452 # no entry should be written. If writing to both, write an empty |
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453 # entry to prevent the reader from falling back to reading |
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454 # filelogs. |
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455 p1copies = p1copies or None |
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456 p2copies = p2copies or None |
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457 filesadded = filesadded or None |
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458 filesremoved = filesremoved or None |
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459 |
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460 extrasentries = p1copies, p2copies, filesadded, filesremoved |
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461 if extra is None and any(x is not None for x in extrasentries): |
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462 extra = {} |
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463 if p1copies is not None: |
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464 p1copies = metadata.encodecopies(files, p1copies) |
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465 extra[b'p1copies'] = p1copies |
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466 if p2copies is not None: |
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467 p2copies = metadata.encodecopies(files, p2copies) |
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468 extra[b'p2copies'] = p2copies |
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469 if filesadded is not None: |
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470 filesadded = metadata.encodefileindices(files, filesadded) |
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471 extra[b'filesadded'] = filesadded |
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472 if filesremoved is not None: |
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473 filesremoved = metadata.encodefileindices(files, filesremoved) |
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474 extra[b'filesremoved'] = filesremoved |
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475 return extra |