Mercurial > hg
annotate hgext/extdiff.py @ 41098:cfd95219102d
strip: move attributes shortcut assigned earlier
This series will add support for "soft" stripping using the archived phase in
addition to the usual heavy weight revlog stripping. First, we need to
refactor the strip function to extract logic common to the "soft-strip" case.
We are about to extract bits of the strip function into separate functions.
Those blocks of code contain variables for frequently accessed attributes. We
move those variables outside of the soon to be moved blocks.
author | Boris Feld <boris.feld@octobus.net> |
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date | Wed, 02 Jan 2019 05:02:25 +0100 |
parents | cb372d09d30a |
children | 4f675c12d083 |
rev | line source |
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1 # extdiff.py - external diff program support for mercurial |
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2 # |
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3 # Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com> |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
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7 |
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8 '''command to allow external programs to compare revisions |
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9 |
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10 The extdiff Mercurial extension allows you to use external programs |
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11 to compare revisions, or revision with working directory. The external |
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12 diff programs are called with a configurable set of options and two |
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13 non-option arguments: paths to directories containing snapshots of |
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14 files to compare. |
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15 |
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16 If there is more than one file being compared and the "child" revision |
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17 is the working directory, any modifications made in the external diff |
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18 program will be copied back to the working directory from the temporary |
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19 directory. |
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20 |
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21 The extdiff extension also allows you to configure new diff commands, so |
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22 you do not need to type :hg:`extdiff -p kdiff3` always. :: |
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23 |
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24 [extdiff] |
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25 # add new command that runs GNU diff(1) in 'context diff' mode |
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26 cdiff = gdiff -Nprc5 |
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27 ## or the old way: |
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28 #cmd.cdiff = gdiff |
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29 #opts.cdiff = -Nprc5 |
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30 |
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31 # add new command called meld, runs meld (no need to name twice). If |
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32 # the meld executable is not available, the meld tool in [merge-tools] |
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33 # will be used, if available |
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34 meld = |
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35 |
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36 # add new command called vimdiff, runs gvimdiff with DirDiff plugin |
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37 # (see http://www.vim.org/scripts/script.php?script_id=102) Non |
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38 # English user, be sure to put "let g:DirDiffDynamicDiffText = 1" in |
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39 # your .vimrc |
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40 vimdiff = gvim -f "+next" \\ |
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41 "+execute 'DirDiff' fnameescape(argv(0)) fnameescape(argv(1))" |
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42 |
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43 Tool arguments can include variables that are expanded at runtime:: |
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44 |
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45 $parent1, $plabel1 - filename, descriptive label of first parent |
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46 $child, $clabel - filename, descriptive label of child revision |
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47 $parent2, $plabel2 - filename, descriptive label of second parent |
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48 $root - repository root |
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49 $parent is an alias for $parent1. |
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50 |
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51 The extdiff extension will look in your [diff-tools] and [merge-tools] |
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52 sections for diff tool arguments, when none are specified in [extdiff]. |
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53 |
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54 :: |
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55 |
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56 [extdiff] |
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57 kdiff3 = |
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58 |
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59 [diff-tools] |
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60 kdiff3.diffargs=--L1 '$plabel1' --L2 '$clabel' $parent $child |
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61 |
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62 You can use -I/-X and list of file or directory names like normal |
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63 :hg:`diff` command. The extdiff extension makes snapshots of only |
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64 needed files, so running the external diff program will actually be |
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65 pretty fast (at least faster than having to compare the entire tree). |
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66 ''' |
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67 |
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68 from __future__ import absolute_import |
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69 |
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70 import os |
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71 import re |
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72 import shutil |
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73 import stat |
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74 |
3891 | 75 from mercurial.i18n import _ |
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76 from mercurial.node import ( |
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77 nullid, |
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78 short, |
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79 ) |
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80 from mercurial import ( |
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81 archival, |
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82 cmdutil, |
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83 error, |
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84 filemerge, |
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85 formatter, |
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86 pycompat, |
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87 registrar, |
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88 scmutil, |
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89 util, |
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90 ) |
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91 from mercurial.utils import ( |
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92 procutil, |
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93 stringutil, |
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94 ) |
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95 |
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96 cmdtable = {} |
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97 command = registrar.command(cmdtable) |
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98 |
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99 configtable = {} |
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100 configitem = registrar.configitem(configtable) |
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101 |
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102 configitem('extdiff', br'opts\..*', |
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103 default='', |
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104 generic=True, |
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105 ) |
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106 |
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107 configitem('diff-tools', br'.*\.diffargs$', |
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108 default=None, |
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109 generic=True, |
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110 ) |
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111 |
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112 # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for |
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113 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should |
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114 # be specifying the version(s) of Mercurial they are tested with, or |
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115 # leave the attribute unspecified. |
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116 testedwith = 'ships-with-hg-core' |
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117 |
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118 def snapshot(ui, repo, files, node, tmproot, listsubrepos): |
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119 '''snapshot files as of some revision |
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120 if not using snapshot, -I/-X does not work and recursive diff |
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121 in tools like kdiff3 and meld displays too many files.''' |
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122 dirname = os.path.basename(repo.root) |
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123 if dirname == "": |
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124 dirname = "root" |
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125 if node is not None: |
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126 dirname = '%s.%s' % (dirname, short(node)) |
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127 base = os.path.join(tmproot, dirname) |
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128 os.mkdir(base) |
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129 fnsandstat = [] |
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130 |
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131 if node is not None: |
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132 ui.note(_('making snapshot of %d files from rev %s\n') % |
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133 (len(files), short(node))) |
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134 else: |
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136 (len(files))) |
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137 |
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138 if files: |
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139 repo.ui.setconfig("ui", "archivemeta", False) |
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140 |
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141 archival.archive(repo, base, node, 'files', |
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142 match=scmutil.matchfiles(repo, files), |
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143 subrepos=listsubrepos) |
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144 |
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145 for fn in sorted(files): |
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146 wfn = util.pconvert(fn) |
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147 ui.note(' %s\n' % wfn) |
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148 |
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149 if node is None: |
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150 dest = os.path.join(base, wfn) |
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151 |
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152 fnsandstat.append((dest, repo.wjoin(fn), os.lstat(dest))) |
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153 return dirname, fnsandstat |
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154 |
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155 def dodiff(ui, repo, cmdline, pats, opts): |
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156 '''Do the actual diff: |
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157 |
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158 - copy to a temp structure if diffing 2 internal revisions |
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159 - copy to a temp structure if diffing working revision with |
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160 another one and more than 1 file is changed |
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161 - just invoke the diff for a single file in the working dir |
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162 ''' |
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163 |
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164 revs = opts.get('rev') |
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165 change = opts.get('change') |
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166 do3way = '$parent2' in cmdline |
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167 |
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168 if revs and change: |
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169 msg = _('cannot specify --rev and --change at the same time') |
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170 raise error.Abort(msg) |
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171 elif change: |
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172 ctx2 = scmutil.revsingle(repo, change, None) |
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173 ctx1a, ctx1b = ctx2.p1(), ctx2.p2() |
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174 else: |
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175 ctx1a, ctx2 = scmutil.revpair(repo, revs) |
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176 if not revs: |
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177 ctx1b = repo[None].p2() |
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178 else: |
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179 ctx1b = repo[nullid] |
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180 |
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181 node1a = ctx1a.node() |
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182 node1b = ctx1b.node() |
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183 node2 = ctx2.node() |
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184 |
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185 # Disable 3-way merge if there is only one parent |
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186 if do3way: |
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187 if node1b == nullid: |
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188 do3way = False |
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189 |
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190 subrepos=opts.get('subrepos') |
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191 |
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192 matcher = scmutil.match(repo[node2], pats, opts) |
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193 |
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194 if opts.get('patch'): |
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195 if subrepos: |
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196 raise error.Abort(_('--patch cannot be used with --subrepos')) |
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197 if node2 is None: |
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198 raise error.Abort(_('--patch requires two revisions')) |
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199 else: |
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200 mod_a, add_a, rem_a = map(set, repo.status(node1a, node2, matcher, |
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201 listsubrepos=subrepos)[:3]) |
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202 if do3way: |
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203 mod_b, add_b, rem_b = map(set, |
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204 repo.status(node1b, node2, matcher, |
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205 listsubrepos=subrepos)[:3]) |
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206 else: |
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207 mod_b, add_b, rem_b = set(), set(), set() |
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208 modadd = mod_a | add_a | mod_b | add_b |
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209 common = modadd | rem_a | rem_b |
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210 if not common: |
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211 return 0 |
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212 |
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213 tmproot = pycompat.mkdtemp(prefix='extdiff.') |
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214 try: |
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215 if not opts.get('patch'): |
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216 # Always make a copy of node1a (and node1b, if applicable) |
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217 dir1a_files = mod_a | rem_a | ((mod_b | add_b) - add_a) |
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218 dir1a = snapshot(ui, repo, dir1a_files, node1a, tmproot, |
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219 subrepos)[0] |
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220 rev1a = '@%d' % repo[node1a].rev() |
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221 if do3way: |
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222 dir1b_files = mod_b | rem_b | ((mod_a | add_a) - add_b) |
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223 dir1b = snapshot(ui, repo, dir1b_files, node1b, tmproot, |
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224 subrepos)[0] |
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225 rev1b = '@%d' % repo[node1b].rev() |
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226 else: |
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227 dir1b = None |
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228 rev1b = '' |
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229 |
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230 fnsandstat = [] |
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231 |
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232 # If node2 in not the wc or there is >1 change, copy it |
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233 dir2root = '' |
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234 rev2 = '' |
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235 if node2: |
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236 dir2 = snapshot(ui, repo, modadd, node2, tmproot, subrepos)[0] |
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237 rev2 = '@%d' % repo[node2].rev() |
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238 elif len(common) > 1: |
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239 #we only actually need to get the files to copy back to |
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240 #the working dir in this case (because the other cases |
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241 #are: diffing 2 revisions or single file -- in which case |
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242 #the file is already directly passed to the diff tool). |
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243 dir2, fnsandstat = snapshot(ui, repo, modadd, None, tmproot, |
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244 subrepos) |
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245 else: |
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246 # This lets the diff tool open the changed file directly |
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247 dir2 = '' |
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248 dir2root = repo.root |
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249 |
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250 label1a = rev1a |
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251 label1b = rev1b |
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252 label2 = rev2 |
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253 |
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254 # If only one change, diff the files instead of the directories |
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255 # Handle bogus modifies correctly by checking if the files exist |
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256 if len(common) == 1: |
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257 common_file = util.localpath(common.pop()) |
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258 dir1a = os.path.join(tmproot, dir1a, common_file) |
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259 label1a = common_file + rev1a |
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260 if not os.path.isfile(dir1a): |
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261 dir1a = os.devnull |
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262 if do3way: |
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263 dir1b = os.path.join(tmproot, dir1b, common_file) |
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264 label1b = common_file + rev1b |
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265 if not os.path.isfile(dir1b): |
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266 dir1b = os.devnull |
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267 dir2 = os.path.join(dir2root, dir2, common_file) |
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268 label2 = common_file + rev2 |
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269 else: |
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270 template = 'hg-%h.patch' |
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271 with formatter.nullformatter(ui, 'extdiff', {}) as fm: |
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272 cmdutil.export(repo, [repo[node1a].rev(), repo[node2].rev()], |
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273 fm, |
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274 fntemplate=repo.vfs.reljoin(tmproot, template), |
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275 match=matcher) |
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276 label1a = cmdutil.makefilename(repo[node1a], template) |
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277 label2 = cmdutil.makefilename(repo[node2], template) |
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278 dir1a = repo.vfs.reljoin(tmproot, label1a) |
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279 dir2 = repo.vfs.reljoin(tmproot, label2) |
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280 dir1b = None |
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281 label1b = None |
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282 fnsandstat = [] |
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283 |
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284 # Function to quote file/dir names in the argument string. |
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285 # When not operating in 3-way mode, an empty string is |
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286 # returned for parent2 |
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287 replace = {'parent': dir1a, 'parent1': dir1a, 'parent2': dir1b, |
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288 'plabel1': label1a, 'plabel2': label1b, |
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289 'clabel': label2, 'child': dir2, |
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290 'root': repo.root} |
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291 def quote(match): |
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292 pre = match.group(2) |
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293 key = match.group(3) |
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294 if not do3way and key == 'parent2': |
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295 return pre |
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296 return pre + procutil.shellquote(replace[key]) |
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297 |
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298 # Match parent2 first, so 'parent1?' will match both parent1 and parent |
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299 regex = (br'''(['"]?)([^\s'"$]*)''' |
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300 br'\$(parent2|parent1?|child|plabel1|plabel2|clabel|root)\1') |
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301 if not do3way and not re.search(regex, cmdline): |
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302 cmdline += ' $parent1 $child' |
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303 cmdline = re.sub(regex, quote, cmdline) |
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304 |
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305 ui.debug('running %r in %s\n' % (pycompat.bytestr(cmdline), tmproot)) |
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306 ui.system(cmdline, cwd=tmproot, blockedtag='extdiff') |
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307 |
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308 for copy_fn, working_fn, st in fnsandstat: |
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309 cpstat = os.lstat(copy_fn) |
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310 # Some tools copy the file and attributes, so mtime may not detect |
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311 # all changes. A size check will detect more cases, but not all. |
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312 # The only certain way to detect every case is to diff all files, |
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313 # which could be expensive. |
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314 # copyfile() carries over the permission, so the mode check could |
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315 # be in an 'elif' branch, but for the case where the file has |
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316 # changed without affecting mtime or size. |
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317 if (cpstat[stat.ST_MTIME] != st[stat.ST_MTIME] |
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318 or cpstat.st_size != st.st_size |
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319 or (cpstat.st_mode & 0o100) != (st.st_mode & 0o100)): |
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320 ui.debug('file changed while diffing. ' |
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321 'Overwriting: %s (src: %s)\n' % (working_fn, copy_fn)) |
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322 util.copyfile(copy_fn, working_fn) |
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323 |
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324 return 1 |
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325 finally: |
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326 ui.note(_('cleaning up temp directory\n')) |
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327 shutil.rmtree(tmproot) |
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328 |
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329 extdiffopts = [ |
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330 ('o', 'option', [], |
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331 _('pass option to comparison program'), _('OPT')), |
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332 ('r', 'rev', [], _('revision'), _('REV')), |
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333 ('c', 'change', '', _('change made by revision'), _('REV')), |
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334 ('', 'patch', None, _('compare patches for two revisions')) |
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335 ] + cmdutil.walkopts + cmdutil.subrepoopts |
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336 |
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337 @command('extdiff', |
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338 [('p', 'program', '', _('comparison program to run'), _('CMD')), |
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339 ] + extdiffopts, |
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340 _('hg extdiff [OPT]... [FILE]...'), |
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341 helpcategory=command.CATEGORY_FILE_CONTENTS, |
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342 inferrepo=True) |
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343 def extdiff(ui, repo, *pats, **opts): |
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344 '''use external program to diff repository (or selected files) |
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345 |
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346 Show differences between revisions for the specified files, using |
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347 an external program. The default program used is diff, with |
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348 default options "-Npru". |
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349 |
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350 To select a different program, use the -p/--program option. The |
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351 program will be passed the names of two directories to compare. To |
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352 pass additional options to the program, use -o/--option. These |
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353 will be passed before the names of the directories to compare. |
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354 |
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355 When two revision arguments are given, then changes are shown |
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356 between those revisions. If only one revision is specified then |
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357 that revision is compared to the working directory, and, when no |
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358 revisions are specified, the working directory files are compared |
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359 to its parent.''' |
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360 opts = pycompat.byteskwargs(opts) |
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361 program = opts.get('program') |
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362 option = opts.get('option') |
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363 if not program: |
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364 program = 'diff' |
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365 option = option or ['-Npru'] |
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366 cmdline = ' '.join(map(procutil.shellquote, [program] + option)) |
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367 return dodiff(ui, repo, cmdline, pats, opts) |
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368 |
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369 class savedcmd(object): |
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370 """use external program to diff repository (or selected files) |
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371 |
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372 Show differences between revisions for the specified files, using |
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373 the following program:: |
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374 |
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375 %(path)s |
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376 |
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377 When two revision arguments are given, then changes are shown |
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378 between those revisions. If only one revision is specified then |
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379 that revision is compared to the working directory, and, when no |
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380 revisions are specified, the working directory files are compared |
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381 to its parent. |
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382 """ |
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383 |
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384 def __init__(self, path, cmdline): |
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385 # We can't pass non-ASCII through docstrings (and path is |
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386 # in an unknown encoding anyway), but avoid double separators on |
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387 # Windows |
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388 docpath = stringutil.escapestr(path).replace(b'\\\\', b'\\') |
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389 self.__doc__ %= {r'path': pycompat.sysstr(stringutil.uirepr(docpath))} |
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390 self._cmdline = cmdline |
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391 |
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392 def __call__(self, ui, repo, *pats, **opts): |
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393 opts = pycompat.byteskwargs(opts) |
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394 options = ' '.join(map(procutil.shellquote, opts['option'])) |
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395 if options: |
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396 options = ' ' + options |
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397 return dodiff(ui, repo, self._cmdline + options, pats, opts) |
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398 |
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399 def uisetup(ui): |
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400 for cmd, path in ui.configitems('extdiff'): |
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401 path = util.expandpath(path) |
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402 if cmd.startswith('cmd.'): |
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403 cmd = cmd[4:] |
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404 if not path: |
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405 path = procutil.findexe(cmd) |
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406 if path is None: |
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407 path = filemerge.findexternaltool(ui, cmd) or cmd |
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408 diffopts = ui.config('extdiff', 'opts.' + cmd) |
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409 cmdline = procutil.shellquote(path) |
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410 if diffopts: |
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411 cmdline += ' ' + diffopts |
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412 elif cmd.startswith('opts.'): |
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413 continue |
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414 else: |
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415 if path: |
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416 # case "cmd = path opts" |
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417 cmdline = path |
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418 diffopts = len(pycompat.shlexsplit(cmdline)) > 1 |
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419 else: |
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420 # case "cmd =" |
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421 path = procutil.findexe(cmd) |
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422 if path is None: |
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423 path = filemerge.findexternaltool(ui, cmd) or cmd |
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424 cmdline = procutil.shellquote(path) |
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425 diffopts = False |
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426 # look for diff arguments in [diff-tools] then [merge-tools] |
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427 if not diffopts: |
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428 args = ui.config('diff-tools', cmd+'.diffargs') or \ |
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429 ui.config('merge-tools', cmd+'.diffargs') |
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430 if args: |
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431 cmdline += ' ' + args |
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432 command(cmd, extdiffopts[:], _('hg %s [OPTION]... [FILE]...') % cmd, |
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433 helpcategory=command.CATEGORY_FILE_CONTENTS, |
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434 inferrepo=True)(savedcmd(path, cmdline)) |
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435 |
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436 # tell hggettext to extract docstrings from these functions: |
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437 i18nfunctions = [savedcmd] |