Mercurial > hg
annotate hgext/extdiff.py @ 40892:140d455ef40a
test: enable sparse-revlog for test-hgweb-commands.t
We are about to enable sparse-revlog globally. To help with reviewing the
tests change, we isolate them in individual changesets.
Differential Revision: https://phab.mercurial-scm.org/D5319
author | Boris Feld <boris.feld@octobus.net> |
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date | Mon, 12 Nov 2018 01:04:59 +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] |