Mercurial > hg
annotate mercurial/filemerge.py @ 37762:7269b87f817c
scmutil: teach the file prefetch hook to handle multiple commits
The remainder of the commands that need prefetch deal with multiple revisions.
I initially coded this as a separate hook, but then it needed a list of files
to handle `diff` and `grep`, so it didn't seem worth keeping them separate.
Not every matcher will emit bad file messages (some are built from a list of
files that are known to exist). But it seems better to filter this in one place
than to push this on either each caller or each hook implementation.
author | Matt Harbison <matt_harbison@yahoo.com> |
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date | Sat, 14 Apr 2018 18:50:45 -0400 |
parents | a8a902d7176e |
children | 242eb5132203 |
rev | line source |
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1 # filemerge.py - file-level merge handling for Mercurial |
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2 # |
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3 # Copyright 2006, 2007, 2008 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 of the |
10263 | 6 # GNU General Public License version 2 or any later version. |
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7 |
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8 from __future__ import absolute_import |
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9 |
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10 import contextlib |
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11 import os |
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12 import re |
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13 import shutil |
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14 import tempfile |
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15 |
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16 from .i18n import _ |
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17 from .node import nullid, short |
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18 |
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19 from . import ( |
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20 encoding, |
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21 error, |
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22 formatter, |
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23 match, |
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24 pycompat, |
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25 registrar, |
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26 scmutil, |
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27 simplemerge, |
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28 tagmerge, |
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29 templatekw, |
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30 templater, |
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31 util, |
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32 ) |
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33 |
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34 from .utils import ( |
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35 procutil, |
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36 stringutil, |
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37 ) |
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38 |
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39 def _toolstr(ui, tool, part, *args): |
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40 return ui.config("merge-tools", tool + "." + part, *args) |
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41 |
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42 def _toolbool(ui, tool, part,*args): |
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43 return ui.configbool("merge-tools", tool + "." + part, *args) |
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44 |
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45 def _toollist(ui, tool, part): |
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46 return ui.configlist("merge-tools", tool + "." + part) |
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47 |
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48 internals = {} |
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49 # Merge tools to document. |
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50 internalsdoc = {} |
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51 |
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52 internaltool = registrar.internalmerge() |
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53 |
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54 # internal tool merge types |
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55 nomerge = internaltool.nomerge |
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56 mergeonly = internaltool.mergeonly # just the full merge, no premerge |
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57 fullmerge = internaltool.fullmerge # both premerge and merge |
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58 |
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59 _localchangedotherdeletedmsg = _( |
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60 "local%(l)s changed %(fd)s which other%(o)s deleted\n" |
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61 "use (c)hanged version, (d)elete, or leave (u)nresolved?" |
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62 "$$ &Changed $$ &Delete $$ &Unresolved") |
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63 |
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64 _otherchangedlocaldeletedmsg = _( |
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65 "other%(o)s changed %(fd)s which local%(l)s deleted\n" |
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66 "use (c)hanged version, leave (d)eleted, or " |
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67 "leave (u)nresolved?" |
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68 "$$ &Changed $$ &Deleted $$ &Unresolved") |
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69 |
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70 class absentfilectx(object): |
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71 """Represents a file that's ostensibly in a context but is actually not |
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72 present in it. |
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73 |
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74 This is here because it's very specific to the filemerge code for now -- |
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75 other code is likely going to break with the values this returns.""" |
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76 def __init__(self, ctx, f): |
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77 self._ctx = ctx |
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78 self._f = f |
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79 |
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80 def path(self): |
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81 return self._f |
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82 |
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83 def size(self): |
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84 return None |
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85 |
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86 def data(self): |
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87 return None |
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88 |
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89 def filenode(self): |
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90 return nullid |
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91 |
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92 _customcmp = True |
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93 def cmp(self, fctx): |
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94 """compare with other file context |
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95 |
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96 returns True if different from fctx. |
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97 """ |
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98 return not (fctx.isabsent() and |
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99 fctx.ctx() == self.ctx() and |
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100 fctx.path() == self.path()) |
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101 |
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102 def flags(self): |
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103 return '' |
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104 |
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105 def changectx(self): |
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106 return self._ctx |
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107 |
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108 def isbinary(self): |
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109 return False |
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110 |
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111 def isabsent(self): |
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112 return True |
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113 |
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114 def _findtool(ui, tool): |
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115 if tool in internals: |
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116 return tool |
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117 return findexternaltool(ui, tool) |
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118 |
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119 def findexternaltool(ui, tool): |
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120 for kn in ("regkey", "regkeyalt"): |
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121 k = _toolstr(ui, tool, kn) |
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122 if not k: |
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123 continue |
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124 p = util.lookupreg(k, _toolstr(ui, tool, "regname")) |
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125 if p: |
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126 p = procutil.findexe(p + _toolstr(ui, tool, "regappend", "")) |
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127 if p: |
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128 return p |
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129 exe = _toolstr(ui, tool, "executable", tool) |
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130 return procutil.findexe(util.expandpath(exe)) |
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131 |
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132 def _picktool(repo, ui, path, binary, symlink, changedelete): |
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133 def supportscd(tool): |
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134 return tool in internals and internals[tool].mergetype == nomerge |
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135 |
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136 def check(tool, pat, symlink, binary, changedelete): |
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137 tmsg = tool |
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138 if pat: |
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139 tmsg = _("%s (for pattern %s)") % (tool, pat) |
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140 if not _findtool(ui, tool): |
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141 if pat: # explicitly requested tool deserves a warning |
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142 ui.warn(_("couldn't find merge tool %s\n") % tmsg) |
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143 else: # configured but non-existing tools are more silent |
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144 ui.note(_("couldn't find merge tool %s\n") % tmsg) |
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145 elif symlink and not _toolbool(ui, tool, "symlink"): |
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146 ui.warn(_("tool %s can't handle symlinks\n") % tmsg) |
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147 elif binary and not _toolbool(ui, tool, "binary"): |
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148 ui.warn(_("tool %s can't handle binary\n") % tmsg) |
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149 elif changedelete and not supportscd(tool): |
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150 # the nomerge tools are the only tools that support change/delete |
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151 # conflicts |
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152 pass |
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153 elif not procutil.gui() and _toolbool(ui, tool, "gui"): |
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154 ui.warn(_("tool %s requires a GUI\n") % tmsg) |
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155 else: |
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156 return True |
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157 return False |
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158 |
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159 # internal config: ui.forcemerge |
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160 # forcemerge comes from command line arguments, highest priority |
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161 force = ui.config('ui', 'forcemerge') |
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162 if force: |
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163 toolpath = _findtool(ui, force) |
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164 if changedelete and not supportscd(toolpath): |
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165 return ":prompt", None |
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166 else: |
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167 if toolpath: |
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168 return (force, procutil.shellquote(toolpath)) |
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169 else: |
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170 # mimic HGMERGE if given tool not found |
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171 return (force, force) |
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172 |
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173 # HGMERGE takes next precedence |
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174 hgmerge = encoding.environ.get("HGMERGE") |
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175 if hgmerge: |
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176 if changedelete and not supportscd(hgmerge): |
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177 return ":prompt", None |
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178 else: |
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179 return (hgmerge, hgmerge) |
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180 |
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181 # then patterns |
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182 for pat, tool in ui.configitems("merge-patterns"): |
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183 mf = match.match(repo.root, '', [pat]) |
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184 if mf(path) and check(tool, pat, symlink, False, changedelete): |
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185 toolpath = _findtool(ui, tool) |
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186 return (tool, procutil.shellquote(toolpath)) |
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187 |
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188 # then merge tools |
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189 tools = {} |
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190 disabled = set() |
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191 for k, v in ui.configitems("merge-tools"): |
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192 t = k.split('.')[0] |
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193 if t not in tools: |
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194 tools[t] = int(_toolstr(ui, t, "priority")) |
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195 if _toolbool(ui, t, "disabled"): |
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196 disabled.add(t) |
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197 names = tools.keys() |
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198 tools = sorted([(-p, tool) for tool, p in tools.items() |
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199 if tool not in disabled]) |
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200 uimerge = ui.config("ui", "merge") |
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201 if uimerge: |
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202 # external tools defined in uimerge won't be able to handle |
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203 # change/delete conflicts |
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204 if uimerge not in names and not changedelete: |
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205 return (uimerge, uimerge) |
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206 tools.insert(0, (None, uimerge)) # highest priority |
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207 tools.append((None, "hgmerge")) # the old default, if found |
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208 for p, t in tools: |
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209 if check(t, None, symlink, binary, changedelete): |
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210 toolpath = _findtool(ui, t) |
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211 return (t, procutil.shellquote(toolpath)) |
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212 |
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213 # internal merge or prompt as last resort |
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214 if symlink or binary or changedelete: |
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215 if not changedelete and len(tools): |
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216 # any tool is rejected by capability for symlink or binary |
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217 ui.warn(_("no tool found to merge %s\n") % path) |
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218 return ":prompt", None |
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219 return ":merge", None |
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220 |
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221 def _eoltype(data): |
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222 "Guess the EOL type of a file" |
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223 if '\0' in data: # binary |
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224 return None |
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225 if '\r\n' in data: # Windows |
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226 return '\r\n' |
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227 if '\r' in data: # Old Mac |
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228 return '\r' |
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229 if '\n' in data: # UNIX |
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230 return '\n' |
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231 return None # unknown |
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232 |
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233 def _matcheol(file, back): |
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234 "Convert EOL markers in a file to match origfile" |
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235 tostyle = _eoltype(back.data()) # No repo.wread filters? |
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236 if tostyle: |
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237 data = util.readfile(file) |
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238 style = _eoltype(data) |
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239 if style: |
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240 newdata = data.replace(style, tostyle) |
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241 if newdata != data: |
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242 util.writefile(file, newdata) |
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243 |
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244 @internaltool('prompt', nomerge) |
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245 def _iprompt(repo, mynode, orig, fcd, fco, fca, toolconf, labels=None): |
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246 """Asks the user which of the local `p1()` or the other `p2()` version to |
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247 keep as the merged version.""" |
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248 ui = repo.ui |
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249 fd = fcd.path() |
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250 |
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251 # Avoid prompting during an in-memory merge since it doesn't support merge |
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252 # conflicts. |
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253 if fcd.changectx().isinmemory(): |
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254 raise error.InMemoryMergeConflictsError('in-memory merge does not ' |
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255 'support file conflicts') |
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256 |
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257 prompts = partextras(labels) |
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258 prompts['fd'] = fd |
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259 try: |
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260 if fco.isabsent(): |
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261 index = ui.promptchoice( |
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262 _localchangedotherdeletedmsg % prompts, 2) |
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263 choice = ['local', 'other', 'unresolved'][index] |
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264 elif fcd.isabsent(): |
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265 index = ui.promptchoice( |
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266 _otherchangedlocaldeletedmsg % prompts, 2) |
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267 choice = ['other', 'local', 'unresolved'][index] |
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268 else: |
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269 index = ui.promptchoice( |
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270 _("keep (l)ocal%(l)s, take (o)ther%(o)s, or leave (u)nresolved" |
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271 " for %(fd)s?" |
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272 "$$ &Local $$ &Other $$ &Unresolved") % prompts, 2) |
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273 choice = ['local', 'other', 'unresolved'][index] |
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274 |
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275 if choice == 'other': |
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276 return _iother(repo, mynode, orig, fcd, fco, fca, toolconf, |
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277 labels) |
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278 elif choice == 'local': |
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279 return _ilocal(repo, mynode, orig, fcd, fco, fca, toolconf, |
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280 labels) |
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281 elif choice == 'unresolved': |
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282 return _ifail(repo, mynode, orig, fcd, fco, fca, toolconf, |
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283 labels) |
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284 except error.ResponseExpected: |
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285 ui.write("\n") |
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286 return _ifail(repo, mynode, orig, fcd, fco, fca, toolconf, |
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287 labels) |
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288 |
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289 @internaltool('local', nomerge) |
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290 def _ilocal(repo, mynode, orig, fcd, fco, fca, toolconf, labels=None): |
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291 """Uses the local `p1()` version of files as the merged version.""" |
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292 return 0, fcd.isabsent() |
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293 |
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294 @internaltool('other', nomerge) |
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295 def _iother(repo, mynode, orig, fcd, fco, fca, toolconf, labels=None): |
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296 """Uses the other `p2()` version of files as the merged version.""" |
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297 if fco.isabsent(): |
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298 # local changed, remote deleted -- 'deleted' picked |
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299 _underlyingfctxifabsent(fcd).remove() |
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300 deleted = True |
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301 else: |
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302 _underlyingfctxifabsent(fcd).write(fco.data(), fco.flags()) |
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303 deleted = False |
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304 return 0, deleted |
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305 |
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306 @internaltool('fail', nomerge) |
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307 def _ifail(repo, mynode, orig, fcd, fco, fca, toolconf, labels=None): |
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308 """ |
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309 Rather than attempting to merge files that were modified on both |
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310 branches, it marks them as unresolved. The resolve command must be |
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311 used to resolve these conflicts.""" |
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312 # for change/delete conflicts write out the changed version, then fail |
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313 if fcd.isabsent(): |
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314 _underlyingfctxifabsent(fcd).write(fco.data(), fco.flags()) |
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315 return 1, False |
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316 |
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317 def _underlyingfctxifabsent(filectx): |
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318 """Sometimes when resolving, our fcd is actually an absentfilectx, but |
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319 we want to write to it (to do the resolve). This helper returns the |
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320 underyling workingfilectx in that case. |
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321 """ |
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322 if filectx.isabsent(): |
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323 return filectx.changectx()[filectx.path()] |
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324 else: |
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325 return filectx |
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326 |
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327 def _premerge(repo, fcd, fco, fca, toolconf, files, labels=None): |
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328 tool, toolpath, binary, symlink = toolconf |
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329 if symlink or fcd.isabsent() or fco.isabsent(): |
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330 return 1 |
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331 unused, unused, unused, back = files |
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332 |
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333 ui = repo.ui |
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334 |
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335 validkeep = ['keep', 'keep-merge3'] |
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336 |
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337 # do we attempt to simplemerge first? |
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338 try: |
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339 premerge = _toolbool(ui, tool, "premerge", not binary) |
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340 except error.ConfigError: |
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341 premerge = _toolstr(ui, tool, "premerge", "").lower() |
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342 if premerge not in validkeep: |
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343 _valid = ', '.join(["'" + v + "'" for v in validkeep]) |
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344 raise error.ConfigError(_("%s.premerge not valid " |
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345 "('%s' is neither boolean nor %s)") % |
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346 (tool, premerge, _valid)) |
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347 |
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348 if premerge: |
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349 if premerge == 'keep-merge3': |
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350 if not labels: |
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351 labels = _defaultconflictlabels |
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352 if len(labels) < 3: |
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353 labels.append('base') |
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354 r = simplemerge.simplemerge(ui, fcd, fca, fco, quiet=True, label=labels) |
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355 if not r: |
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356 ui.debug(" premerge successful\n") |
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357 return 0 |
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358 if premerge not in validkeep: |
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359 # restore from backup and try again |
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360 _restorebackup(fcd, back) |
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361 return 1 # continue merging |
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362 |
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363 def _mergecheck(repo, mynode, orig, fcd, fco, fca, toolconf): |
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364 tool, toolpath, binary, symlink = toolconf |
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365 if symlink: |
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366 repo.ui.warn(_('warning: internal %s cannot merge symlinks ' |
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367 'for %s\n') % (tool, fcd.path())) |
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368 return False |
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369 if fcd.isabsent() or fco.isabsent(): |
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370 repo.ui.warn(_('warning: internal %s cannot merge change/delete ' |
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371 'conflict for %s\n') % (tool, fcd.path())) |
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372 return False |
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373 return True |
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374 |
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375 def _merge(repo, mynode, orig, fcd, fco, fca, toolconf, files, labels, mode): |
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376 """ |
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377 Uses the internal non-interactive simple merge algorithm for merging |
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378 files. It will fail if there are any conflicts and leave markers in |
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379 the partially merged file. Markers will have two sections, one for each side |
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380 of merge, unless mode equals 'union' which suppresses the markers.""" |
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381 ui = repo.ui |
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382 |
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383 r = simplemerge.simplemerge(ui, fcd, fca, fco, label=labels, mode=mode) |
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384 return True, r, False |
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385 |
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386 @internaltool('union', fullmerge, |
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387 _("warning: conflicts while merging %s! " |
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388 "(edit, then use 'hg resolve --mark')\n"), |
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389 precheck=_mergecheck) |
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390 def _iunion(repo, mynode, orig, fcd, fco, fca, toolconf, files, labels=None): |
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391 """ |
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392 Uses the internal non-interactive simple merge algorithm for merging |
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393 files. It will use both left and right sides for conflict regions. |
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394 No markers are inserted.""" |
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395 return _merge(repo, mynode, orig, fcd, fco, fca, toolconf, |
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396 files, labels, 'union') |
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397 |
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398 @internaltool('merge', fullmerge, |
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399 _("warning: conflicts while merging %s! " |
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400 "(edit, then use 'hg resolve --mark')\n"), |
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401 precheck=_mergecheck) |
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402 def _imerge(repo, mynode, orig, fcd, fco, fca, toolconf, files, labels=None): |
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403 """ |
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404 Uses the internal non-interactive simple merge algorithm for merging |
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405 files. It will fail if there are any conflicts and leave markers in |
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406 the partially merged file. Markers will have two sections, one for each side |
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407 of merge.""" |
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408 return _merge(repo, mynode, orig, fcd, fco, fca, toolconf, |
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409 files, labels, 'merge') |
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410 |
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411 @internaltool('merge3', fullmerge, |
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412 _("warning: conflicts while merging %s! " |
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413 "(edit, then use 'hg resolve --mark')\n"), |
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414 precheck=_mergecheck) |
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415 def _imerge3(repo, mynode, orig, fcd, fco, fca, toolconf, files, labels=None): |
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416 """ |
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417 Uses the internal non-interactive simple merge algorithm for merging |
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418 files. It will fail if there are any conflicts and leave markers in |
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419 the partially merged file. Marker will have three sections, one from each |
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420 side of the merge and one for the base content.""" |
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421 if not labels: |
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422 labels = _defaultconflictlabels |
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423 if len(labels) < 3: |
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424 labels.append('base') |
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425 return _imerge(repo, mynode, orig, fcd, fco, fca, toolconf, files, labels) |
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426 |
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427 def _imergeauto(repo, mynode, orig, fcd, fco, fca, toolconf, files, |
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428 labels=None, localorother=None): |
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429 """ |
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430 Generic driver for _imergelocal and _imergeother |
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431 """ |
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432 assert localorother is not None |
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433 tool, toolpath, binary, symlink = toolconf |
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434 r = simplemerge.simplemerge(repo.ui, fcd, fca, fco, label=labels, |
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435 localorother=localorother) |
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436 return True, r |
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437 |
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438 @internaltool('merge-local', mergeonly, precheck=_mergecheck) |
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439 def _imergelocal(*args, **kwargs): |
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440 """ |
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441 Like :merge, but resolve all conflicts non-interactively in favor |
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442 of the local `p1()` changes.""" |
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443 success, status = _imergeauto(localorother='local', *args, **kwargs) |
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444 return success, status, False |
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445 |
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446 @internaltool('merge-other', mergeonly, precheck=_mergecheck) |
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447 def _imergeother(*args, **kwargs): |
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448 """ |
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449 Like :merge, but resolve all conflicts non-interactively in favor |
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450 of the other `p2()` changes.""" |
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451 success, status = _imergeauto(localorother='other', *args, **kwargs) |
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452 return success, status, False |
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453 |
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454 @internaltool('tagmerge', mergeonly, |
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455 _("automatic tag merging of %s failed! " |
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456 "(use 'hg resolve --tool :merge' or another merge " |
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457 "tool of your choice)\n")) |
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458 def _itagmerge(repo, mynode, orig, fcd, fco, fca, toolconf, files, labels=None): |
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459 """ |
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460 Uses the internal tag merge algorithm (experimental). |
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461 """ |
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462 success, status = tagmerge.merge(repo, fcd, fco, fca) |
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463 return success, status, False |
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464 |
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465 @internaltool('dump', fullmerge) |
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466 def _idump(repo, mynode, orig, fcd, fco, fca, toolconf, files, labels=None): |
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467 """ |
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468 Creates three versions of the files to merge, containing the |
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469 contents of local, other and base. These files can then be used to |
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470 perform a merge manually. If the file to be merged is named |
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471 ``a.txt``, these files will accordingly be named ``a.txt.local``, |
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472 ``a.txt.other`` and ``a.txt.base`` and they will be placed in the |
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473 same directory as ``a.txt``. |
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474 |
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475 This implies premerge. Therefore, files aren't dumped, if premerge |
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476 runs successfully. Use :forcedump to forcibly write files out. |
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477 """ |
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478 a = _workingpath(repo, fcd) |
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479 fd = fcd.path() |
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480 |
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481 from . import context |
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482 if isinstance(fcd, context.overlayworkingfilectx): |
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483 raise error.InMemoryMergeConflictsError('in-memory merge does not ' |
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484 'support the :dump tool.') |
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485 |
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486 util.writefile(a + ".local", fcd.decodeddata()) |
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487 repo.wwrite(fd + ".other", fco.data(), fco.flags()) |
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488 repo.wwrite(fd + ".base", fca.data(), fca.flags()) |
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489 return False, 1, False |
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490 |
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491 @internaltool('forcedump', mergeonly) |
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492 def _forcedump(repo, mynode, orig, fcd, fco, fca, toolconf, files, |
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493 labels=None): |
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494 """ |
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495 Creates three versions of the files as same as :dump, but omits premerge. |
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496 """ |
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497 return _idump(repo, mynode, orig, fcd, fco, fca, toolconf, files, |
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498 labels=labels) |
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499 |
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500 def _xmergeimm(repo, mynode, orig, fcd, fco, fca, toolconf, files, labels=None): |
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501 # In-memory merge simply raises an exception on all external merge tools, |
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502 # for now. |
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503 # |
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504 # It would be possible to run most tools with temporary files, but this |
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505 # raises the question of what to do if the user only partially resolves the |
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506 # file -- we can't leave a merge state. (Copy to somewhere in the .hg/ |
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507 # directory and tell the user how to get it is my best idea, but it's |
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508 # clunky.) |
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509 raise error.InMemoryMergeConflictsError('in-memory merge does not support ' |
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510 'external merge tools') |
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511 |
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512 def _xmerge(repo, mynode, orig, fcd, fco, fca, toolconf, files, labels=None): |
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513 tool, toolpath, binary, symlink = toolconf |
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514 if fcd.isabsent() or fco.isabsent(): |
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515 repo.ui.warn(_('warning: %s cannot merge change/delete conflict ' |
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516 'for %s\n') % (tool, fcd.path())) |
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517 return False, 1, None |
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518 unused, unused, unused, back = files |
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519 localpath = _workingpath(repo, fcd) |
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520 args = _toolstr(repo.ui, tool, "args") |
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521 |
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522 with _maketempfiles(repo, fco, fca, repo.wvfs.join(back.path()), |
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523 "$output" in args) as temppaths: |
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524 basepath, otherpath, localoutputpath = temppaths |
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525 outpath = "" |
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526 mylabel, otherlabel = labels[:2] |
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527 if len(labels) >= 3: |
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528 baselabel = labels[2] |
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529 else: |
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530 baselabel = 'base' |
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531 env = {'HG_FILE': fcd.path(), |
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532 'HG_MY_NODE': short(mynode), |
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533 'HG_OTHER_NODE': short(fco.changectx().node()), |
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534 'HG_BASE_NODE': short(fca.changectx().node()), |
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535 'HG_MY_ISLINK': 'l' in fcd.flags(), |
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536 'HG_OTHER_ISLINK': 'l' in fco.flags(), |
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537 'HG_BASE_ISLINK': 'l' in fca.flags(), |
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538 'HG_MY_LABEL': mylabel, |
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539 'HG_OTHER_LABEL': otherlabel, |
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540 'HG_BASE_LABEL': baselabel, |
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541 } |
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542 ui = repo.ui |
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543 |
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544 if "$output" in args: |
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changeset
|
545 # read input from backup, write to original |
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546 outpath = localpath |
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547 localpath = localoutputpath |
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548 replace = {'local': localpath, 'base': basepath, 'other': otherpath, |
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549 'output': outpath, 'labellocal': mylabel, |
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550 'labelother': otherlabel, 'labelbase': baselabel} |
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551 args = util.interpolate( |
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552 br'\$', replace, args, |
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553 lambda s: procutil.shellquote(util.localpath(s))) |
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554 cmd = toolpath + ' ' + args |
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555 if _toolbool(ui, tool, "gui"): |
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556 repo.ui.status(_('running merge tool %s for file %s\n') % |
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557 (tool, fcd.path())) |
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558 repo.ui.debug('launching merge tool: %s\n' % cmd) |
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559 r = ui.system(cmd, cwd=repo.root, environ=env, blockedtag='mergetool') |
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560 repo.ui.debug('merge tool returned: %d\n' % r) |
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561 return True, r, False |
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562 |
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563 def _formatconflictmarker(ctx, template, label, pad): |
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564 """Applies the given template to the ctx, prefixed by the label. |
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565 |
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566 Pad is the minimum width of the label prefix, so that multiple markers |
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567 can have aligned templated parts. |
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568 """ |
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569 if ctx.node() is None: |
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570 ctx = ctx.p1() |
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571 |
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572 props = {'ctx': ctx} |
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573 templateresult = template.renderdefault(props) |
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574 |
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575 label = ('%s:' % label).ljust(pad + 1) |
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576 mark = '%s %s' % (label, templateresult) |
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577 |
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578 if mark: |
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579 mark = mark.splitlines()[0] # split for safety |
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580 |
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581 # 8 for the prefix of conflict marker lines (e.g. '<<<<<<< ') |
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582 return stringutil.ellipsis(mark, 80 - 8) |
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583 |
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584 _defaultconflictlabels = ['local', 'other'] |
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585 |
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586 def _formatlabels(repo, fcd, fco, fca, labels, tool=None): |
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587 """Formats the given labels using the conflict marker template. |
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588 |
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589 Returns a list of formatted labels. |
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590 """ |
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591 cd = fcd.changectx() |
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592 co = fco.changectx() |
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593 ca = fca.changectx() |
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594 |
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595 ui = repo.ui |
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596 template = ui.config('ui', 'mergemarkertemplate') |
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597 if tool is not None: |
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598 template = _toolstr(ui, tool, 'mergemarkertemplate', template) |
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599 template = templater.unquotestring(template) |
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600 tres = formatter.templateresources(ui, repo) |
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601 tmpl = formatter.maketemplater(ui, template, defaults=templatekw.keywords, |
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602 resources=tres) |
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603 |
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604 pad = max(len(l) for l in labels) |
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605 |
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606 newlabels = [_formatconflictmarker(cd, tmpl, labels[0], pad), |
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607 _formatconflictmarker(co, tmpl, labels[1], pad)] |
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608 if len(labels) > 2: |
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609 newlabels.append(_formatconflictmarker(ca, tmpl, labels[2], pad)) |
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610 return newlabels |
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611 |
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612 def partextras(labels): |
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613 """Return a dictionary of extra labels for use in prompts to the user |
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614 |
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615 Intended use is in strings of the form "(l)ocal%(l)s". |
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616 """ |
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617 if labels is None: |
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618 return { |
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619 "l": "", |
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620 "o": "", |
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621 } |
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622 |
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623 return { |
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624 "l": " [%s]" % labels[0], |
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625 "o": " [%s]" % labels[1], |
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626 } |
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627 |
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628 def _restorebackup(fcd, back): |
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629 # TODO: Add a workingfilectx.write(otherfilectx) path so we can use |
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630 # util.copy here instead. |
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631 fcd.write(back.data(), fcd.flags()) |
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632 |
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633 def _makebackup(repo, ui, wctx, fcd, premerge): |
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634 """Makes and returns a filectx-like object for ``fcd``'s backup file. |
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635 |
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636 In addition to preserving the user's pre-existing modifications to `fcd` |
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637 (if any), the backup is used to undo certain premerges, confirm whether a |
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638 merge changed anything, and determine what line endings the new file should |
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639 have. |
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640 |
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641 Backups only need to be written once (right before the premerge) since their |
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642 content doesn't change afterwards. |
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643 """ |
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644 if fcd.isabsent(): |
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645 return None |
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646 # TODO: Break this import cycle somehow. (filectx -> ctx -> fileset -> |
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647 # merge -> filemerge). (I suspect the fileset import is the weakest link) |
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648 from . import context |
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649 a = _workingpath(repo, fcd) |
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650 back = scmutil.origpath(ui, repo, a) |
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651 inworkingdir = (back.startswith(repo.wvfs.base) and not |
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652 back.startswith(repo.vfs.base)) |
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653 if isinstance(fcd, context.overlayworkingfilectx) and inworkingdir: |
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654 # If the backup file is to be in the working directory, and we're |
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655 # merging in-memory, we must redirect the backup to the memory context |
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656 # so we don't disturb the working directory. |
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657 relpath = back[len(repo.wvfs.base) + 1:] |
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658 if premerge: |
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659 wctx[relpath].write(fcd.data(), fcd.flags()) |
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660 return wctx[relpath] |
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661 else: |
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662 if premerge: |
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663 # Otherwise, write to wherever path the user specified the backups |
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664 # should go. We still need to switch based on whether the source is |
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665 # in-memory so we can use the fast path of ``util.copy`` if both are |
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666 # on disk. |
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667 if isinstance(fcd, context.overlayworkingfilectx): |
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668 util.writefile(back, fcd.data()) |
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669 else: |
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670 util.copyfile(a, back) |
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671 # A arbitraryfilectx is returned, so we can run the same functions on |
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672 # the backup context regardless of where it lives. |
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673 return context.arbitraryfilectx(back, repo=repo) |
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674 |
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675 @contextlib.contextmanager |
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676 def _maketempfiles(repo, fco, fca, localpath, uselocalpath): |
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677 """Writes out `fco` and `fca` as temporary files, and (if uselocalpath) |
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678 copies `localpath` to another temporary file, so an external merge tool may |
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679 use them. |
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680 """ |
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681 tmproot = None |
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682 tmprootprefix = repo.ui.config('experimental', 'mergetempdirprefix') |
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683 if tmprootprefix: |
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684 tmproot = tempfile.mkdtemp(prefix=tmprootprefix) |
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685 |
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686 def maketempfrompath(prefix, path): |
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687 fullbase, ext = os.path.splitext(path) |
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688 pre = "%s~%s" % (os.path.basename(fullbase), prefix) |
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689 if tmproot: |
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690 name = os.path.join(tmproot, pre) |
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691 if ext: |
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692 name += ext |
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693 f = open(name, r"wb") |
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694 else: |
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695 fd, name = tempfile.mkstemp(prefix=pre + '.', suffix=ext) |
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696 f = os.fdopen(fd, r"wb") |
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697 return f, name |
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698 |
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699 def tempfromcontext(prefix, ctx): |
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700 f, name = maketempfrompath(prefix, ctx.path()) |
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701 data = repo.wwritedata(ctx.path(), ctx.data()) |
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702 f.write(data) |
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703 f.close() |
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704 return name |
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705 |
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706 b = tempfromcontext("base", fca) |
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707 c = tempfromcontext("other", fco) |
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708 d = localpath |
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709 if uselocalpath: |
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710 # We start off with this being the backup filename, so remove the .orig |
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711 # to make syntax-highlighting more likely. |
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712 if d.endswith('.orig'): |
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713 d, _ = os.path.splitext(d) |
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714 f, d = maketempfrompath("local", d) |
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715 with open(localpath, 'rb') as src: |
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716 f.write(src.read()) |
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717 f.close() |
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718 |
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719 try: |
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720 yield b, c, d |
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|
721 finally: |
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722 if tmproot: |
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|
723 shutil.rmtree(tmproot) |
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724 else: |
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725 util.unlink(b) |
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726 util.unlink(c) |
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727 # if not uselocalpath, d is the 'orig'/backup file which we |
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728 # shouldn't delete. |
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|
729 if d and uselocalpath: |
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|
730 util.unlink(d) |
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|
731 |
34122
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merge: pass wctx to premerge, filemerge
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34076
diff
changeset
|
732 def _filemerge(premerge, repo, wctx, mynode, orig, fcd, fco, fca, labels=None): |
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|
733 """perform a 3-way merge in the working directory |
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diff
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|
734 |
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diff
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|
735 premerge = whether this is a premerge |
6512
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merge: introduce mergestate
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|
736 mynode = parent node before merge |
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|
737 orig = original local filename before merge |
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738 fco = other file context |
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739 fca = ancestor file context |
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740 fcd = local file context for current/destination file |
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diff
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|
741 |
27034
86ede9eda252
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742 Returns whether the merge is complete, the return value of the merge, and |
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|
743 a boolean indicating whether the file was deleted from disk.""" |
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744 |
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745 if not fco.cmp(fcd): # files identical? |
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746 return True, None, False |
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747 |
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748 ui = repo.ui |
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749 fd = fcd.path() |
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750 binary = fcd.isbinary() or fco.isbinary() or fca.isbinary() |
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751 symlink = 'l' in fcd.flags() + fco.flags() |
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diff
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|
752 changedelete = fcd.isabsent() or fco.isabsent() |
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|
753 tool, toolpath = _picktool(repo, ui, fd, binary, symlink, changedelete) |
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754 if tool in internals and tool.startswith('internal:'): |
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755 # normalize to new-style names (':merge' etc) |
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|
756 tool = tool[len('internal'):] |
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27124
diff
changeset
|
757 ui.debug("picked tool '%s' for %s (binary %s symlink %s changedelete %s)\n" |
32753
264b86cf2092
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parents:
32317
diff
changeset
|
758 % (tool, fd, pycompat.bytestr(binary), pycompat.bytestr(symlink), |
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|
759 pycompat.bytestr(changedelete))) |
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760 |
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|
761 if tool in internals: |
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|
762 func = internals[tool] |
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763 mergetype = func.mergetype |
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|
764 onfailure = func.onfailure |
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|
765 precheck = func.precheck |
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changeset
|
766 isexternal = False |
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changeset
|
767 else: |
35463
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diff
changeset
|
768 if wctx.isinmemory(): |
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|
769 func = _xmergeimm |
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|
770 else: |
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|
771 func = _xmerge |
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|
772 mergetype = fullmerge |
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|
773 onfailure = _("merging %s failed!\n") |
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|
774 precheck = None |
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|
775 isexternal = True |
26512
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diff
changeset
|
776 |
26608
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changeset
|
777 toolconf = tool, toolpath, binary, symlink |
6003
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diff
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|
778 |
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changeset
|
779 if mergetype == nomerge: |
29774
a7f8939641aa
merge: use labels in prompts to the user
Simon Farnsworth <simonfar@fb.com>
parents:
29660
diff
changeset
|
780 r, deleted = func(repo, mynode, orig, fcd, fco, fca, toolconf, labels) |
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|
781 return True, r, deleted |
26512
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changeset
|
782 |
26609
47681e77e484
filemerge: only print out "merging f" output at premerge step
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|
783 if premerge: |
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|
784 if orig != fco.path(): |
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|
785 ui.status(_("merging %s and %s to %s\n") % (orig, fco.path(), fd)) |
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|
786 else: |
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|
787 ui.status(_("merging %s\n") % fd) |
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|
788 |
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|
789 ui.debug("my %s other %s ancestor %s\n" % (fcd, fco, fca)) |
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|
790 |
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|
791 if precheck and not precheck(repo, mynode, orig, fcd, fco, fca, |
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|
792 toolconf): |
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|
793 if onfailure: |
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|
794 if wctx.isinmemory(): |
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|
795 raise error.InMemoryMergeConflictsError('in-memory merge does ' |
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|
796 'not support merge ' |
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|
797 'conflicts') |
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|
798 ui.warn(onfailure % fd) |
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|
799 return True, 1, False |
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|
800 |
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|
801 back = _makebackup(repo, ui, wctx, fcd, premerge) |
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|
802 files = (None, None, None, back) |
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|
803 r = 1 |
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|
804 try: |
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805 internalmarkerstyle = ui.config('ui', 'mergemarkers') |
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|
806 if isexternal: |
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807 markerstyle = _toolstr(ui, tool, 'mergemarkers') |
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808 else: |
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809 markerstyle = internalmarkerstyle |
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810 |
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811 if not labels: |
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812 labels = _defaultconflictlabels |
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813 formattedlabels = labels |
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814 if markerstyle != 'basic': |
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815 formattedlabels = _formatlabels(repo, fcd, fco, fca, labels, |
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|
816 tool=tool) |
6004
5af5f0f9d724
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|
817 |
26607
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filemerge: introduce a premerge flag and function
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diff
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|
818 if premerge and mergetype == fullmerge: |
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|
819 # conflict markers generated by premerge will use 'detailed' |
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820 # settings if either ui.mergemarkers or the tool's mergemarkers |
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|
821 # setting is 'detailed'. This way tools can have basic labels in |
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822 # space-constrained areas of the UI, but still get full information |
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|
823 # in conflict markers if premerge is 'keep' or 'keep-merge3'. |
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|
824 premergelabels = labels |
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|
825 labeltool = None |
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|
826 if markerstyle != 'basic': |
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827 # respect 'tool's mergemarkertemplate (which defaults to |
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|
828 # ui.mergemarkertemplate) |
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|
829 labeltool = tool |
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|
830 if internalmarkerstyle != 'basic' or markerstyle != 'basic': |
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|
831 premergelabels = _formatlabels(repo, fcd, fco, fca, |
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|
832 premergelabels, tool=labeltool) |
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|
833 |
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|
834 r = _premerge(repo, fcd, fco, fca, toolconf, files, |
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|
835 labels=premergelabels) |
26611
a5ff66e6d77a
filemerge: break overall filemerge into separate premerge and merge steps
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26610
diff
changeset
|
836 # complete if premerge successful (r is 0) |
27034
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diff
changeset
|
837 return not r, r, False |
26567
f18646cf0e93
filemerge: call premerge directly from main merge function
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diff
changeset
|
838 |
27033
089dab8794dc
filemerge: return whether the file is deleted from all other merge tools
Siddharth Agarwal <sid0@fb.com>
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27032
diff
changeset
|
839 needcheck, r, deleted = func(repo, mynode, orig, fcd, fco, fca, |
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|
840 toolconf, files, labels=formattedlabels) |
27033
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diff
changeset
|
841 |
26575
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changeset
|
842 if needcheck: |
34034
7558917f291e
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diff
changeset
|
843 r = _check(repo, r, ui, tool, fcd, files) |
21519
25d5a9ecbb85
merge: add conflict marker formatter (BC)
Durham Goode <durham@fb.com>
parents:
21273
diff
changeset
|
844 |
16125
83925d3a4559
filemerge: refactoring of 'filemerge()'
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parents:
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diff
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|
845 if r: |
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|
846 if onfailure: |
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|
847 if wctx.isinmemory(): |
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|
848 raise error.InMemoryMergeConflictsError('in-memory merge ' |
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|
849 'does not support ' |
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|
850 'merge conflicts') |
16125
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filemerge: refactoring of 'filemerge()'
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diff
changeset
|
851 ui.warn(onfailure % fd) |
34797
284fa44f7f39
merge: allow user to halt merge on merge-tool failures
Ryan McElroy <rmcelroy@fb.com>
parents:
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diff
changeset
|
852 _onfilemergefailure(ui) |
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|
853 |
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|
854 return True, r, deleted |
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|
855 finally: |
27047
e1458049dca5
filemerge: don't try to copy files known to be absent
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parents:
27042
diff
changeset
|
856 if not r and back is not None: |
34782
f21eecc64ace
filemerge: use arbitraryfilectx for backups
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changeset
|
857 back.remove() |
6004
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diff
changeset
|
858 |
34796
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diff
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|
859 def _haltmerge(): |
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|
860 msg = _('merge halted after failed merge (see hg resolve)') |
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|
861 raise error.InterventionRequired(msg) |
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|
862 |
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|
863 def _onfilemergefailure(ui): |
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|
864 action = ui.config('merge', 'on-failure') |
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|
865 if action == 'prompt': |
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|
866 msg = _('continue merge operation (yn)?' '$$ &Yes $$ &No') |
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|
867 if ui.promptchoice(msg, 0) == 1: |
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|
868 _haltmerge() |
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|
869 if action == 'halt': |
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|
870 _haltmerge() |
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|
871 # default action is 'continue', in which case we neither prompt nor halt |
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|
872 |
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|
873 def _check(repo, r, ui, tool, fcd, files): |
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|
874 fd = fcd.path() |
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|
875 unused, unused, unused, back = files |
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|
876 |
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|
877 if not r and (_toolbool(ui, tool, "checkconflicts") or |
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|
878 'conflicts' in _toollist(ui, tool, "check")): |
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|
879 if re.search("^(<<<<<<< .*|=======|>>>>>>> .*)$", fcd.data(), |
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|
880 re.MULTILINE): |
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|
881 r = 1 |
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|
882 |
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|
883 checked = False |
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|
884 if 'prompt' in _toollist(ui, tool, "check"): |
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|
885 checked = True |
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886 if ui.promptchoice(_("was merge of '%s' successful (yn)?" |
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887 "$$ &Yes $$ &No") % fd, 1): |
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888 r = 1 |
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889 |
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890 if not r and not checked and (_toolbool(ui, tool, "checkchanged") or |
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891 'changed' in |
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892 _toollist(ui, tool, "check")): |
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893 if back is not None and not fcd.cmp(back): |
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894 if ui.promptchoice(_(" output file %s appears unchanged\n" |
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895 "was merge successful (yn)?" |
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896 "$$ &Yes $$ &No") % fd, 1): |
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897 r = 1 |
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898 |
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899 if back is not None and _toolbool(ui, tool, "fixeol"): |
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900 _matcheol(_workingpath(repo, fcd), back) |
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901 |
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902 return r |
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903 |
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904 def _workingpath(repo, ctx): |
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905 return repo.wjoin(ctx.path()) |
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906 |
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907 def premerge(repo, wctx, mynode, orig, fcd, fco, fca, labels=None): |
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908 return _filemerge(True, repo, wctx, mynode, orig, fcd, fco, fca, |
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909 labels=labels) |
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910 |
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911 def filemerge(repo, wctx, mynode, orig, fcd, fco, fca, labels=None): |
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912 return _filemerge(False, repo, wctx, mynode, orig, fcd, fco, fca, |
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913 labels=labels) |
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914 |
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915 def loadinternalmerge(ui, extname, registrarobj): |
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916 """Load internal merge tool from specified registrarobj |
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917 """ |
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918 for name, func in registrarobj._table.iteritems(): |
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919 fullname = ':' + name |
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920 internals[fullname] = func |
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921 internals['internal:' + name] = func |
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922 internalsdoc[fullname] = func |
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923 |
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924 # load built-in merge tools explicitly to setup internalsdoc |
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925 loadinternalmerge(None, None, internaltool) |
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926 |
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927 # tell hggettext to extract docstrings from these functions: |
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928 i18nfunctions = internals.values() |