annotate mercurial/filemerge.py @ 7711:a0de99db7cdc

i18n: add python-format comments to da.po
author Martin Geisler <mg@daimi.au.dk>
date Sun, 25 Jan 2009 20:16:35 +0100
parents 4c92d8971809
children 4a4c7f6a5912
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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, short
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9 from i18n import _
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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 if tool in ("internal:fail", "internal:local", "internal:other"):
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20 return tool
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21 k = _toolstr(ui, tool, "regkey")
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22 if k:
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23 p = util.lookup_reg(k, _toolstr(ui, tool, "regname"))
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24 if p:
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25 p = util.find_exe(p + _toolstr(ui, tool, "regappend"))
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26 if p:
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27 return p
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28 return util.find_exe(_toolstr(ui, tool, "executable", tool))
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29
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30 def _picktool(repo, ui, path, binary, symlink):
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31 def check(tool, pat, symlink, binary):
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32 tmsg = tool
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33 if pat:
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34 tmsg += " specified for " + pat
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35 if not _findtool(ui, tool):
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36 if pat: # explicitly requested tool deserves a warning
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37 ui.warn(_("couldn't find merge tool %s\n") % tmsg)
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38 else: # configured but non-existing tools are more silent
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39 ui.note(_("couldn't find merge tool %s\n") % tmsg)
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40 elif symlink and not _toolbool(ui, tool, "symlink"):
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41 ui.warn(_("tool %s can't handle symlinks\n") % tmsg)
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42 elif binary and not _toolbool(ui, tool, "binary"):
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43 ui.warn(_("tool %s can't handle binary\n") % tmsg)
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44 elif not util.gui() and _toolbool(ui, tool, "gui"):
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45 ui.warn(_("tool %s requires a GUI\n") % tmsg)
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46 else:
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47 return True
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48 return False
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49
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50 # HGMERGE takes precedence
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51 hgmerge = os.environ.get("HGMERGE")
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52 if hgmerge:
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53 return (hgmerge, hgmerge)
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54
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55 # then patterns
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56 for pat, tool in ui.configitems("merge-patterns"):
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57 mf = util.matcher(repo.root, "", [pat], [], [])[1]
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58 if mf(path) and check(tool, pat, symlink, False):
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59 toolpath = _findtool(ui, tool)
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60 return (tool, '"' + toolpath + '"')
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61
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62 # then merge tools
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63 tools = {}
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64 for k,v in ui.configitems("merge-tools"):
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65 t = k.split('.')[0]
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66 if t not in tools:
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67 tools[t] = int(_toolstr(ui, t, "priority", "0"))
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68 names = tools.keys()
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69 tools = util.sort([(-p,t) for t,p in tools.items()])
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70 uimerge = ui.config("ui", "merge")
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71 if uimerge:
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72 if uimerge not in names:
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73 return (uimerge, uimerge)
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74 tools.insert(0, (None, uimerge)) # highest priority
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75 tools.append((None, "hgmerge")) # the old default, if found
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76 for p,t in tools:
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77 if check(t, None, symlink, binary):
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78 toolpath = _findtool(ui, t)
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79 return (t, '"' + toolpath + '"')
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80 # internal merge as last resort
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81 return (not (symlink or binary) and "internal:merge" or None, None)
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82
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83 def _eoltype(data):
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84 "Guess the EOL type of a file"
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85 if '\0' in data: # binary
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86 return None
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87 if '\r\n' in data: # Windows
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88 return '\r\n'
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89 if '\r' in data: # Old Mac
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90 return '\r'
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91 if '\n' in data: # UNIX
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92 return '\n'
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93 return None # unknown
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94
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95 def _matcheol(file, origfile):
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96 "Convert EOL markers in a file to match origfile"
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97 tostyle = _eoltype(open(origfile, "rb").read())
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98 if tostyle:
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99 data = open(file, "rb").read()
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100 style = _eoltype(data)
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101 if style:
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102 newdata = data.replace(style, tostyle)
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103 if newdata != data:
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104 open(file, "wb").write(newdata)
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105
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106 def filemerge(repo, mynode, orig, fcd, fco, fca):
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107 """perform a 3-way merge in the working directory
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108
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109 mynode = parent node before merge
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110 orig = original local filename before merge
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111 fco = other file context
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112 fca = ancestor file context
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113 fcd = local file context for current/destination file
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114 """
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115
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116 def temp(prefix, ctx):
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117 pre = "%s~%s." % (os.path.basename(ctx.path()), prefix)
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118 (fd, name) = tempfile.mkstemp(prefix=pre)
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119 data = repo.wwritedata(ctx.path(), ctx.data())
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120 f = os.fdopen(fd, "wb")
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121 f.write(data)
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122 f.close()
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123 return name
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124
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125 def isbin(ctx):
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126 try:
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127 return util.binary(ctx.data())
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128 except IOError:
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129 return False
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130
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131 if not fco.cmp(fcd.data()): # files identical?
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132 return None
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133
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134 ui = repo.ui
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135 fd = fcd.path()
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136 binary = isbin(fcd) or isbin(fco) or isbin(fca)
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137 symlink = 'l' in fcd.flags() + fco.flags()
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138 tool, toolpath = _picktool(repo, ui, fd, binary, symlink)
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139 ui.debug(_("picked tool '%s' for %s (binary %s symlink %s)\n") %
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140 (tool, fd, binary, symlink))
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141
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142 if not tool:
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143 tool = "internal:local"
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144 if ui.prompt(_(" no tool found to merge %s\n"
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145 "keep (l)ocal or take (o)ther?") % fd,
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146 _("[lo]"), _("l")) != _("l"):
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147 tool = "internal:other"
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148 if tool == "internal:local":
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149 return 0
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150 if tool == "internal:other":
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151 repo.wwrite(fd, fco.data(), fco.flags())
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152 return 0
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153 if tool == "internal:fail":
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154 return 1
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155
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156 # do the actual merge
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157 a = repo.wjoin(fd)
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158 b = temp("base", fca)
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159 c = temp("other", fco)
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160 out = ""
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161 back = a + ".orig"
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162 util.copyfile(a, back)
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163
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164 if orig != fco.path():
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165 repo.ui.status(_("merging %s and %s to %s\n") % (orig, fco.path(), fd))
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166 else:
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167 repo.ui.status(_("merging %s\n") % fd)
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168
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169 repo.ui.debug(_("my %s other %s ancestor %s\n") % (fcd, fco, fca))
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170
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171 # do we attempt to simplemerge first?
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172 if _toolbool(ui, tool, "premerge", not (binary or symlink)):
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173 r = simplemerge.simplemerge(a, b, c, quiet=True)
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diff changeset
174 if not r:
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175 ui.debug(_(" premerge successful\n"))
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176 os.unlink(back)
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177 os.unlink(b)
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178 os.unlink(c)
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179 return 0
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180 util.copyfile(back, a) # restore from backup and try again
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181
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182 env = dict(HG_FILE=fd,
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183 HG_MY_NODE=short(mynode),
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184 HG_OTHER_NODE=str(fco.changectx()),
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185 HG_MY_ISLINK='l' in fcd.flags(),
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186 HG_OTHER_ISLINK='l' in fco.flags(),
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187 HG_BASE_ISLINK='l' in fca.flags())
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188
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189 if tool == "internal:merge":
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190 r = simplemerge.simplemerge(a, b, c, label=['local', 'other'])
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191 else:
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192 args = _toolstr(ui, tool, "args", '$local $base $other')
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193 if "$output" in args:
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194 out, a = a, back # read input from backup, write to original
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195 replace = dict(local=a, base=b, other=c, output=out)
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196 args = re.sub("\$(local|base|other|output)",
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197 lambda x: '"%s"' % replace[x.group()[1:]], args)
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198 r = util.system(toolpath + ' ' + args, cwd=repo.root, environ=env)
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diff changeset
199
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200 if not r and _toolbool(ui, tool, "checkconflicts"):
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diff changeset
201 if re.match("^(<<<<<<< .*|=======|>>>>>>> .*)$", fcd.data()):
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diff changeset
202 r = 1
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diff changeset
203
6075
63e0e57ab157 filemerge: add 'checkchanged' merge tool property
Steve Borho <steve@borho.org>
parents: 6025
diff changeset
204 if not r and _toolbool(ui, tool, "checkchanged"):
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diff changeset
205 if filecmp.cmp(repo.wjoin(fd), back):
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diff changeset
206 if ui.prompt(_(" output file %s appears unchanged\n"
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Steve Borho <steve@borho.org>
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diff changeset
207 "was merge successful (yn)?") % fd,
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Steve Borho <steve@borho.org>
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diff changeset
208 _("[yn]"), _("n")) != _("y"):
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Steve Borho <steve@borho.org>
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diff changeset
209 r = 1
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diff changeset
210
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diff changeset
211 if _toolbool(ui, tool, "fixeol"):
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26ef792f834e filemerge: fix path to working file when fixeol is enabled
Lee Cantey <lcantey@gmail.com>
parents: 6013
diff changeset
212 _matcheol(repo.wjoin(fd), back)
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diff changeset
213
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214 if r:
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215 repo.ui.warn(_("merging %s failed!\n") % fd)
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diff changeset
216 else:
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diff changeset
217 os.unlink(back)
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parents:
diff changeset
218
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diff changeset
219 os.unlink(b)
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220 os.unlink(c)
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parents:
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221 return r