Mercurial > hg
annotate hgext/extdiff.py @ 9693:c40a1ee20aa5
transaction: always remove empty journal on abort
When transactions without entries were aborted, the journal (of size 0) was not
unlinked, which prevents subsequent operations until hg recover is run on the
repository.
We also make sure the journal is unlinked when committing, even if the provided
hook doesn't do so.
author | Sune Foldager <cryo@cyanite.org> |
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date | Mon, 02 Nov 2009 10:19:14 +0100 |
parents | d932dc655881 |
children | 11d7ee94b56a |
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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6 # GNU General Public License version 2, incorporated herein by reference. |
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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 The extdiff extension also allows to configure new diff commands, so |
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17 you do not need to type "hg extdiff -p kdiff3" always. :: |
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18 |
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19 [extdiff] |
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20 # add new command that runs GNU diff(1) in 'context diff' mode |
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21 cdiff = gdiff -Nprc5 |
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22 ## or the old way: |
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23 #cmd.cdiff = gdiff |
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24 #opts.cdiff = -Nprc5 |
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25 |
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26 # add new command called vdiff, runs kdiff3 |
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27 vdiff = kdiff3 |
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28 |
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29 # add new command called meld, runs meld (no need to name twice) |
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30 meld = |
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31 |
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32 # add new command called vimdiff, runs gvimdiff with DirDiff plugin |
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33 # (see http://www.vim.org/scripts/script.php?script_id=102) Non |
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34 # English user, be sure to put "let g:DirDiffDynamicDiffText = 1" in |
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35 # your .vimrc |
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36 vimdiff = gvim -f '+next' '+execute "DirDiff" argv(0) argv(1)' |
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37 |
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38 You can use -I/-X and list of file or directory names like normal "hg |
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39 diff" command. The extdiff extension makes snapshots of only needed |
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40 files, so running the external diff program will actually be pretty |
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41 fast (at least faster than having to compare the entire tree). |
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42 ''' |
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43 |
3891 | 44 from mercurial.i18n import _ |
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45 from mercurial.node import short, nullid |
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46 from mercurial import cmdutil, util, commands |
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47 import os, shlex, shutil, tempfile, re |
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48 |
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49 def snapshot(ui, repo, files, node, tmproot): |
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50 '''snapshot files as of some revision |
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51 if not using snapshot, -I/-X does not work and recursive diff |
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52 in tools like kdiff3 and meld displays too many files.''' |
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53 dirname = os.path.basename(repo.root) |
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54 if dirname == "": |
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55 dirname = "root" |
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56 if node is not None: |
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57 dirname = '%s.%s' % (dirname, short(node)) |
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58 base = os.path.join(tmproot, dirname) |
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59 os.mkdir(base) |
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60 if node is not None: |
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61 ui.note(_('making snapshot of %d files from rev %s\n') % |
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62 (len(files), short(node))) |
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63 else: |
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65 (len(files))) |
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66 wopener = util.opener(base) |
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67 fns_and_mtime = [] |
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68 ctx = repo[node] |
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69 for fn in files: |
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70 wfn = util.pconvert(fn) |
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71 if not wfn in ctx: |
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72 # File doesn't exist; could be a bogus modify |
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73 continue |
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74 ui.note(' %s\n' % wfn) |
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75 dest = os.path.join(base, wfn) |
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76 fctx = ctx[wfn] |
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77 data = repo.wwritedata(wfn, fctx.data()) |
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78 if 'l' in fctx.flags(): |
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79 wopener.symlink(data, wfn) |
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80 else: |
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81 wopener(wfn, 'w').write(data) |
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82 if 'x' in fctx.flags(): |
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83 util.set_flags(dest, False, True) |
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84 if node is None: |
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85 fns_and_mtime.append((dest, repo.wjoin(fn), os.path.getmtime(dest))) |
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86 return dirname, fns_and_mtime |
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87 |
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88 def dodiff(ui, repo, diffcmd, diffopts, pats, opts): |
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89 '''Do the actuall diff: |
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90 |
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91 - copy to a temp structure if diffing 2 internal revisions |
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92 - copy to a temp structure if diffing working revision with |
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93 another one and more than 1 file is changed |
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94 - just invoke the diff for a single file in the working dir |
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95 ''' |
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96 |
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97 revs = opts.get('rev') |
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98 change = opts.get('change') |
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99 args = ' '.join(diffopts) |
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100 do3way = '$parent2' in args |
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101 |
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102 if revs and change: |
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103 msg = _('cannot specify --rev and --change at the same time') |
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104 raise util.Abort(msg) |
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105 elif change: |
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106 node2 = repo.lookup(change) |
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107 node1a, node1b = repo.changelog.parents(node2) |
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108 else: |
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109 node1a, node2 = cmdutil.revpair(repo, revs) |
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110 if not revs: |
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111 node1b = repo.dirstate.parents()[1] |
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112 else: |
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113 node1b = nullid |
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114 |
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115 # Disable 3-way merge if there is only one parent |
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116 if do3way: |
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117 if node1b == nullid: |
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118 do3way = False |
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119 |
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120 matcher = cmdutil.match(repo, pats, opts) |
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121 mod_a, add_a, rem_a = map(set, repo.status(node1a, node2, matcher)[:3]) |
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122 if do3way: |
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123 mod_b, add_b, rem_b = map(set, repo.status(node1b, node2, matcher)[:3]) |
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124 else: |
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125 mod_b, add_b, rem_b = set(), set(), set() |
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126 modadd = mod_a | add_a | mod_b | add_b |
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127 common = modadd | rem_a | rem_b |
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128 if not common: |
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129 return 0 |
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130 |
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131 tmproot = tempfile.mkdtemp(prefix='extdiff.') |
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132 try: |
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133 # Always make a copy of node1a (and node1b, if applicable) |
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134 dir1a_files = mod_a | rem_a | ((mod_b | add_b) - add_a) |
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135 dir1a = snapshot(ui, repo, dir1a_files, node1a, tmproot)[0] |
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136 if do3way: |
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137 dir1b_files = mod_b | rem_b | ((mod_a | add_a) - add_b) |
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138 dir1b = snapshot(ui, repo, dir1b_files, node1b, tmproot)[0] |
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139 else: |
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140 dir1b = None |
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141 |
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142 fns_and_mtime = [] |
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143 |
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144 # If node2 in not the wc or there is >1 change, copy it |
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145 dir2root = '' |
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146 if node2: |
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147 dir2 = snapshot(ui, repo, modadd, node2, tmproot)[0] |
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148 elif len(common) > 1: |
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149 #we only actually need to get the files to copy back to the working |
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150 #dir in this case (because the other cases are: diffing 2 revisions |
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151 #or single file -- in which case the file is already directly passed |
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152 #to the diff tool). |
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153 dir2, fns_and_mtime = snapshot(ui, repo, modadd, None, tmproot) |
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154 else: |
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155 # This lets the diff tool open the changed file directly |
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156 dir2 = '' |
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157 dir2root = repo.root |
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158 |
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159 # If only one change, diff the files instead of the directories |
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160 # Handle bogus modifies correctly by checking if the files exist |
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161 if len(common) == 1: |
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162 common_file = util.localpath(common.pop()) |
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163 dir1a = os.path.join(dir1a, common_file) |
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164 if not os.path.isfile(os.path.join(tmproot, dir1a)): |
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165 dir1a = os.devnull |
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166 if do3way: |
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167 dir1b = os.path.join(dir1b, common_file) |
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168 if not os.path.isfile(os.path.join(tmproot, dir1b)): |
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169 dir1b = os.devnull |
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170 dir2 = os.path.join(dir2root, dir2, common_file) |
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171 |
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172 # Function to quote file/dir names in the argument string |
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173 # When not operating in 3-way mode, an empty string is returned for parent2 |
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174 replace = dict(parent=dir1a, parent1=dir1a, parent2=dir1b, child=dir2) |
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175 def quote(match): |
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176 key = match.group()[1:] |
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177 if not do3way and key == 'parent2': |
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178 return '' |
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179 return util.shellquote(replace[key]) |
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180 |
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181 # Match parent2 first, so 'parent1?' will match both parent1 and parent |
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182 regex = '\$(parent2|parent1?|child)' |
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183 if not do3way and not re.search(regex, args): |
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184 args += ' $parent1 $child' |
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185 args = re.sub(regex, quote, args) |
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186 cmdline = util.shellquote(diffcmd) + ' ' + args |
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187 |
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188 ui.debug('running %r in %s\n' % (cmdline, tmproot)) |
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189 util.system(cmdline, cwd=tmproot) |
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190 |
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191 for copy_fn, working_fn, mtime in fns_and_mtime: |
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192 if os.path.getmtime(copy_fn) != mtime: |
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193 ui.debug('file changed while diffing. ' |
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194 'Overwriting: %s (src: %s)\n' % (working_fn, copy_fn)) |
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195 util.copyfile(copy_fn, working_fn) |
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196 |
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197 return 1 |
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198 finally: |
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199 ui.note(_('cleaning up temp directory\n')) |
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200 shutil.rmtree(tmproot) |
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201 |
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202 def extdiff(ui, repo, *pats, **opts): |
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203 '''use external program to diff repository (or selected files) |
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204 |
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205 Show differences between revisions for the specified files, using |
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206 an external program. The default program used is diff, with |
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207 default options "-Npru". |
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208 |
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209 To select a different program, use the -p/--program option. The |
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210 program will be passed the names of two directories to compare. To |
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211 pass additional options to the program, use -o/--option. These |
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212 will be passed before the names of the directories to compare. |
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213 |
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214 When two revision arguments are given, then changes are shown |
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215 between those revisions. If only one revision is specified then |
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216 that revision is compared to the working directory, and, when no |
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217 revisions are specified, the working directory files are compared |
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218 to its parent.''' |
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219 program = opts.get('program') |
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220 option = opts.get('option') |
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221 if not program: |
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222 program = 'diff' |
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223 option = option or ['-Npru'] |
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224 return dodiff(ui, repo, program, option, pats, opts) |
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225 |
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226 cmdtable = { |
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227 "extdiff": |
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228 (extdiff, |
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229 [('p', 'program', '', _('comparison program to run')), |
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230 ('o', 'option', [], _('pass option to comparison program')), |
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231 ('r', 'rev', [], _('revision')), |
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232 ('c', 'change', '', _('change made by revision')), |
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233 ] + commands.walkopts, |
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234 _('hg extdiff [OPT]... [FILE]...')), |
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235 } |
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236 |
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237 def uisetup(ui): |
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238 for cmd, path in ui.configitems('extdiff'): |
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239 if cmd.startswith('cmd.'): |
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240 cmd = cmd[4:] |
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241 if not path: path = cmd |
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242 diffopts = ui.config('extdiff', 'opts.' + cmd, '') |
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243 diffopts = diffopts and [diffopts] or [] |
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244 elif cmd.startswith('opts.'): |
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245 continue |
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246 else: |
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247 # command = path opts |
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248 if path: |
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249 diffopts = shlex.split(path) |
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250 path = diffopts.pop(0) |
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251 else: |
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252 path, diffopts = cmd, [] |
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253 def save(cmd, path, diffopts): |
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254 '''use closure to save diff command to use''' |
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255 def mydiff(ui, repo, *pats, **opts): |
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256 return dodiff(ui, repo, path, diffopts, pats, opts) |
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257 mydiff.__doc__ = _('''\ |
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258 use %(path)s to diff repository (or selected files) |
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259 |
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260 Show differences between revisions for the specified files, using the |
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261 %(path)s program. |
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262 |
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263 When two revision arguments are given, then changes are shown between |
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264 those revisions. If only one revision is specified then that revision is |
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265 compared to the working directory, and, when no revisions are specified, |
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266 the working directory files are compared to its parent.\ |
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267 ''') % dict(path=util.uirepr(path)) |
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268 return mydiff |
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269 cmdtable[cmd] = (save(cmd, path, diffopts), |
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270 cmdtable['extdiff'][1][1:], |
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271 _('hg %s [OPTION]... [FILE]...') % cmd) |