Mercurial > hg
annotate mercurial/filemerge.py @ 6285:4b81eecc8aa2
Change User-agent field in client to have a lot more info.
author | Eric Hopper <hopper@omnifarious.org> |
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date | Sat, 15 Mar 2008 12:42:41 -0700 |
parents | e75aab656f46 |
children | 368a4ec603cc 2b181fb3a70a |
rev | line source |
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1 # filemerge.py - file-level merge handling for Mercurial |
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2 # |
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3 # Copyright 2006, 2007, 2008 Matt Mackall <mpm@selenic.com> |
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4 # |
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5 # This software may be used and distributed according to the terms |
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6 # of the GNU General Public License, incorporated herein by reference. |
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7 |
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8 from node import nullrev |
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9 from i18n import _ |
6212 | 10 import util, os, tempfile, simplemerge, re, filecmp |
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11 |
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12 def _toolstr(ui, tool, part, default=""): |
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13 return ui.config("merge-tools", tool + "." + part, default) |
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14 |
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15 def _toolbool(ui, tool, part, default=False): |
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16 return ui.configbool("merge-tools", tool + "." + part, default) |
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17 |
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18 def _findtool(ui, tool): |
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19 k = _toolstr(ui, tool, "regkey") |
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20 if k: |
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21 p = util.lookup_reg(k, _toolstr(ui, tool, "regname")) |
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22 if p: |
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23 p = util.find_exe(p + _toolstr(ui, tool, "regappend")) |
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24 if p: |
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25 return p |
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26 return util.find_exe(_toolstr(ui, tool, "executable", tool)) |
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27 |
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28 def _picktool(repo, ui, path, binary, symlink): |
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29 def check(tool, pat, symlink, binary): |
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30 tmsg = tool |
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31 if pat: |
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32 tmsg += " specified for " + pat |
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33 if pat and not _findtool(ui, tool): # skip search if not matching |
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34 ui.warn(_("couldn't find merge tool %s\n") % tmsg) |
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35 elif symlink and not _toolbool(ui, tool, "symlink"): |
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36 ui.warn(_("tool %s can't handle symlinks\n") % tmsg) |
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37 elif binary and not _toolbool(ui, tool, "binary"): |
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38 ui.warn(_("tool %s can't handle binary\n") % tmsg) |
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39 elif not util.gui() and _toolbool(ui, tool, "gui"): |
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40 ui.warn(_("tool %s requires a GUI\n") % tmsg) |
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41 else: |
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42 return True |
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43 return False |
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44 |
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45 # HGMERGE takes precedence |
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46 hgmerge = os.environ.get("HGMERGE") |
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47 if hgmerge: |
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48 return (hgmerge, hgmerge) |
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49 |
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50 # then patterns |
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51 for pat, tool in ui.configitems("merge-patterns"): |
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52 mf = util.matcher(repo.root, "", [pat], [], [])[1] |
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53 if mf(path) and check(tool, pat, symlink, False): |
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54 toolpath = _findtool(ui, tool) |
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55 return (tool, '"' + toolpath + '"') |
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56 |
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57 # then merge tools |
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58 tools = {} |
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59 for k,v in ui.configitems("merge-tools"): |
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60 t = k.split('.')[0] |
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61 if t not in tools: |
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62 tools[t] = int(_toolstr(ui, t, "priority", "0")) |
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63 names = tools.keys() |
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64 tools = [(-p,t) for t,p in tools.items()] |
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65 tools.sort() |
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66 uimerge = ui.config("ui", "merge") |
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67 if uimerge: |
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68 if uimerge not in names: |
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69 return (uimerge, uimerge) |
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70 tools.insert(0, (None, uimerge)) # highest priority |
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71 tools.append((None, "hgmerge")) # the old default, if found |
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72 for p,t in tools: |
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73 toolpath = _findtool(ui, t) |
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74 if toolpath and check(t, None, symlink, binary): |
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75 return (t, '"' + toolpath + '"') |
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76 # internal merge as last resort |
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77 return (not (symlink or binary) and "internal:merge" or None, None) |
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78 |
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79 def _eoltype(data): |
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80 "Guess the EOL type of a file" |
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81 if '\0' in data: # binary |
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82 return None |
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83 if '\r\n' in data: # Windows |
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84 return '\r\n' |
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85 if '\r' in data: # Old Mac |
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86 return '\r' |
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87 if '\n' in data: # UNIX |
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88 return '\n' |
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89 return None # unknown |
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90 |
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91 def _matcheol(file, origfile): |
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92 "Convert EOL markers in a file to match origfile" |
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93 tostyle = _eoltype(open(origfile, "rb").read()) |
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94 if tostyle: |
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95 data = open(file, "rb").read() |
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96 style = _eoltype(data) |
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97 if style: |
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98 newdata = data.replace(style, tostyle) |
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99 if newdata != data: |
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100 open(file, "wb").write(newdata) |
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101 |
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102 def filemerge(repo, fw, fd, fo, wctx, mctx): |
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103 """perform a 3-way merge in the working directory |
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104 |
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105 fw = original filename in the working directory |
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106 fd = destination filename in the working directory |
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107 fo = filename in other parent |
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108 wctx, mctx = working and merge changecontexts |
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109 """ |
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110 |
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111 def temp(prefix, ctx): |
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112 pre = "%s~%s." % (os.path.basename(ctx.path()), prefix) |
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113 (fd, name) = tempfile.mkstemp(prefix=pre) |
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114 data = repo.wwritedata(ctx.path(), ctx.data()) |
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115 f = os.fdopen(fd, "wb") |
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116 f.write(data) |
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117 f.close() |
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118 return name |
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119 |
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120 def isbin(ctx): |
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121 try: |
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122 return util.binary(ctx.data()) |
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123 except IOError: |
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124 return False |
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125 |
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126 fco = mctx.filectx(fo) |
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127 if not fco.cmp(wctx.filectx(fd).data()): # files identical? |
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128 return None |
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129 |
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130 ui = repo.ui |
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131 fcm = wctx.filectx(fw) |
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132 fca = fcm.ancestor(fco) or repo.filectx(fw, fileid=nullrev) |
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133 binary = isbin(fcm) or isbin(fco) or isbin(fca) |
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134 symlink = fcm.islink() or fco.islink() |
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135 tool, toolpath = _picktool(repo, ui, fw, binary, symlink) |
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136 ui.debug(_("picked tool '%s' for %s (binary %s symlink %s)\n") % |
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137 (tool, fw, binary, symlink)) |
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138 |
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139 if not tool: |
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140 tool = "internal:local" |
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141 if ui.prompt(_(" no tool found to merge %s\n" |
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142 "keep (l)ocal or take (o)ther?") % fw, |
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143 _("[lo]"), _("l")) != _("l"): |
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144 tool = "internal:other" |
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145 if tool == "internal:local": |
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146 return 0 |
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147 if tool == "internal:other": |
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148 repo.wwrite(fd, fco.data(), fco.fileflags()) |
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149 return 0 |
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150 if tool == "internal:fail": |
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151 return 1 |
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152 |
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153 # do the actual merge |
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154 a = repo.wjoin(fd) |
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155 b = temp("base", fca) |
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156 c = temp("other", fco) |
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157 out = "" |
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158 back = a + ".orig" |
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159 util.copyfile(a, back) |
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160 |
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161 if fw != fo: |
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162 repo.ui.status(_("merging %s and %s\n") % (fw, fo)) |
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163 else: |
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164 repo.ui.status(_("merging %s\n") % fw) |
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165 repo.ui.debug(_("my %s other %s ancestor %s\n") % (fcm, fco, fca)) |
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166 |
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167 # do we attempt to simplemerge first? |
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168 if _toolbool(ui, tool, "premerge", not (binary or symlink)): |
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169 r = simplemerge.simplemerge(a, b, c, quiet=True) |
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170 if not r: |
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171 ui.debug(_(" premerge successful\n")) |
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172 os.unlink(back) |
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173 os.unlink(b) |
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174 os.unlink(c) |
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175 return 0 |
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176 util.copyfile(back, a) # restore from backup and try again |
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177 |
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178 env = dict(HG_FILE=fd, |
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179 HG_MY_NODE=str(wctx.parents()[0]), |
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180 HG_OTHER_NODE=str(mctx), |
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181 HG_MY_ISLINK=fcm.islink(), |
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182 HG_OTHER_ISLINK=fco.islink(), |
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183 HG_BASE_ISLINK=fca.islink()) |
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184 |
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185 if tool == "internal:merge": |
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186 r = simplemerge.simplemerge(a, b, c, label=['local', 'other']) |
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187 else: |
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188 args = _toolstr(ui, tool, "args", '$local $base $other') |
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189 if "$output" in args: |
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190 out, a = a, back # read input from backup, write to original |
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191 replace = dict(local=a, base=b, other=c, output=out) |
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192 args = re.sub("\$(local|base|other|output)", |
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193 lambda x: '"%s"' % replace[x.group()[1:]], args) |
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194 r = util.system(toolpath + ' ' + args, cwd=repo.root, environ=env) |
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195 |
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196 if not r and _toolbool(ui, tool, "checkconflicts"): |
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197 if re.match("^(<<<<<<< .*|=======|>>>>>>> .*)$", fcm.data()): |
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198 r = 1 |
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199 |
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200 if not r and _toolbool(ui, tool, "checkchanged"): |
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201 if filecmp.cmp(repo.wjoin(fd), back): |
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202 if ui.prompt(_(" output file %s appears unchanged\n" |
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203 "was merge successful (yn)?") % fd, |
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204 _("[yn]"), _("n")) != _("y"): |
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205 r = 1 |
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206 |
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207 if _toolbool(ui, tool, "fixeol"): |
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208 _matcheol(repo.wjoin(fd), back) |
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209 |
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210 if r: |
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211 repo.ui.warn(_("merging %s failed!\n") % fd) |
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212 else: |
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213 os.unlink(back) |
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214 |
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215 os.unlink(b) |
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216 os.unlink(c) |
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217 return r |