Mercurial > public > mercurial-scm > hg-stable

annotate mercurial/simplemerge.py @ 25974:241a1324a180

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simplemerge: use absolute_import
author Gregory Szorc <gregory.szorc@gmail.com>
date Sat, 08 Aug 2015 19:54:11 -0700
parents 83df50a8d61c
children 09d6725cbc60
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 # Copyright (C) 2004, 2005 Canonical Ltd
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2 #
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3 # This program is free software; you can redistribute it and/or modify
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4 # it under the terms of the GNU General Public License as published by
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5 # the Free Software Foundation; either version 2 of the License, or
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6 # (at your option) any later version.
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7 #
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8 # This program is distributed in the hope that it will be useful,
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9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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11 # GNU General Public License for more details.
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12 #
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13 # You should have received a copy of the GNU General Public License
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14 # along with this program; if not, see <http://www.gnu.org/licenses/>.
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15
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16 # mbp: "you know that thing where cvs gives you conflict markers?"
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17 # s: "i hate that."
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18
25974
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19 from __future__ import absolute_import
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20
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21 import os
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22 import sys
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23
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24 from .i18n import _
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25 from . import (
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26 mdiff,
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27 scmutil,
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28 util,
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29 )
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30
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31 class CantReprocessAndShowBase(Exception):
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32 pass
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33
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34 def intersect(ra, rb):
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35 """Given two ranges return the range where they intersect or None.
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36
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37 >>> intersect((0, 10), (0, 6))
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38 (0, 6)
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39 >>> intersect((0, 10), (5, 15))
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40 (5, 10)
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41 >>> intersect((0, 10), (10, 15))
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42 >>> intersect((0, 9), (10, 15))
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43 >>> intersect((0, 9), (7, 15))
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44 (7, 9)
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45 """
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46 assert ra[0] <= ra[1]
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47 assert rb[0] <= rb[1]
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48
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49 sa = max(ra[0], rb[0])
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50 sb = min(ra[1], rb[1])
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51 if sa < sb:
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52 return sa, sb
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53 else:
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54 return None
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55
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56 def compare_range(a, astart, aend, b, bstart, bend):
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57 """Compare a[astart:aend] == b[bstart:bend], without slicing.
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58 """
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59 if (aend - astart) != (bend - bstart):
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60 return False
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61 for ia, ib in zip(xrange(astart, aend), xrange(bstart, bend)):
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62 if a[ia] != b[ib]:
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63 return False
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64 else:
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65 return True
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66
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67 class Merge3Text(object):
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68 """3-way merge of texts.
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69
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70 Given strings BASE, OTHER, THIS, tries to produce a combined text
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71 incorporating the changes from both BASE->OTHER and BASE->THIS."""
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72 def __init__(self, basetext, atext, btext, base=None, a=None, b=None):
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73 self.basetext = basetext
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74 self.atext = atext
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75 self.btext = btext
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76 if base is None:
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77 base = mdiff.splitnewlines(basetext)
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78 if a is None:
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79 a = mdiff.splitnewlines(atext)
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80 if b is None:
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81 b = mdiff.splitnewlines(btext)
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82 self.base = base
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83 self.a = a
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84 self.b = b
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85
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86 def merge_lines(self,
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87 name_a=None,
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88 name_b=None,
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89 name_base=None,
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90 start_marker='<<<<<<<',
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91 mid_marker='=======',
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92 end_marker='>>>>>>>',
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93 base_marker=None):
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94 """Return merge in cvs-like form.
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95 """
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96 self.conflicts = False
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97 newline = '\n'
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98 if len(self.a) > 0:
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99 if self.a[0].endswith('\r\n'):
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100 newline = '\r\n'
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101 elif self.a[0].endswith('\r'):
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102 newline = '\r'
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103 if name_a:
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104 start_marker = start_marker + ' ' + name_a
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105 if name_b:
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106 end_marker = end_marker + ' ' + name_b
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107 if name_base and base_marker:
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108 base_marker = base_marker + ' ' + name_base
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109 merge_regions = self.merge_regions()
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110 for t in merge_regions:
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111 what = t[0]
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112 if what == 'unchanged':
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113 for i in range(t[1], t[2]):
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114 yield self.base[i]
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115 elif what == 'a' or what == 'same':
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116 for i in range(t[1], t[2]):
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117 yield self.a[i]
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118 elif what == 'b':
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119 for i in range(t[1], t[2]):
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120 yield self.b[i]
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121 elif what == 'conflict':
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122 self.conflicts = True
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123 yield start_marker + newline
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124 for i in range(t[3], t[4]):
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125 yield self.a[i]
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126 if base_marker is not None:
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127 yield base_marker + newline
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128 for i in range(t[1], t[2]):
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129 yield self.base[i]
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130 yield mid_marker + newline
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131 for i in range(t[5], t[6]):
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132 yield self.b[i]
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133 yield end_marker + newline
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134 else:
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135 raise ValueError(what)
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Thomas Arendsen Hein <thomas@intevation.de>
parents: 4408
diff changeset
136
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
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diff changeset
137 def merge_groups(self):
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parents:
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138 """Yield sequence of line groups. Each one is a tuple:
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
139
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
140 'unchanged', lines
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
141 Lines unchanged from base
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
142
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
143 'a', lines
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
144 Lines taken from a
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
145
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
146 'same', lines
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
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diff changeset
147 Lines taken from a (and equal to b)
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
148
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
149 'b', lines
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
150 Lines taken from b
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
151
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
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152 'conflict', base_lines, a_lines, b_lines
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
153 Lines from base were changed to either a or b and conflict.
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
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154 """
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
155 for t in self.merge_regions():
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
156 what = t[0]
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
157 if what == 'unchanged':
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
158 yield what, self.base[t[1]:t[2]]
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4cdaf1adafc8 backout most of 4f8067c94729
Matt Mackall <mpm@selenic.com>
parents: 12387
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159 elif what == 'a' or what == 'same':
4362
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160 yield what, self.a[t[1]:t[2]]
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
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161 elif what == 'b':
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
162 yield what, self.b[t[1]:t[2]]
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
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163 elif what == 'conflict':
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
164 yield (what,
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
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165 self.base[t[1]:t[2]],
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
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166 self.a[t[3]:t[4]],
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
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167 self.b[t[5]:t[6]])
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
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168 else:
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
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169 raise ValueError(what)
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170
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
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171 def merge_regions(self):
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
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172 """Return sequences of matching and conflicting regions.
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
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173
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
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174 This returns tuples, where the first value says what kind we
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
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175 have:
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
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176
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
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177 'unchanged', start, end
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
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178 Take a region of base[start:end]
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
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179
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
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diff changeset
180 'same', astart, aend
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
181 b and a are different from base but give the same result
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
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182
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
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183 'a', start, end
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
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184 Non-clashing insertion from a[start:end]
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
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185
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
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186 Method is as follows:
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187
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
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188 The two sequences align only on regions which match the base
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48ec0763afbb check-code: catch misspellings of descendant
Matt Mackall <mpm@selenic.com>
parents: 14329
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189 and both descendants. These are found by doing a two-way diff
4362
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
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190 of each one against the base, and then finding the
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
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diff changeset
191 intersections between those regions. These "sync regions"
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
192 are by definition unchanged in both and easily dealt with.
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
193
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
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194 The regions in between can be in any of three cases:
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195 conflicted, or changed on only one side.
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
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196 """
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197
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
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198 # section a[0:ia] has been disposed of, etc
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
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199 iz = ia = ib = 0
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ea7b982b6c08 Remove trailing spaces
Thomas Arendsen Hein <thomas@intevation.de>
parents: 4408
diff changeset
200
16683
525fdb738975 cleanup: eradicate long lines
Brodie Rao <brodie@sf.io>
parents: 15782
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201 for region in self.find_sync_regions():
525fdb738975 cleanup: eradicate long lines
Brodie Rao <brodie@sf.io>
parents: 15782
diff changeset
202 zmatch, zend, amatch, aend, bmatch, bend = region
4362
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
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203 #print 'match base [%d:%d]' % (zmatch, zend)
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diff changeset
204
4362
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
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diff changeset
205 matchlen = zend - zmatch
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
206 assert matchlen >= 0
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
207 assert matchlen == (aend - amatch)
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
208 assert matchlen == (bend - bmatch)
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diff changeset
209
4362
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
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diff changeset
210 len_a = amatch - ia
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
211 len_b = bmatch - ib
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
212 len_base = zmatch - iz
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
213 assert len_a >= 0
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
214 assert len_b >= 0
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
215 assert len_base >= 0
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
216
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
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diff changeset
217 #print 'unmatched a=%d, b=%d' % (len_a, len_b)
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
218
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
219 if len_a or len_b:
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
220 # try to avoid actually slicing the lists
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
221 equal_a = compare_range(self.a, ia, amatch,
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
222 self.base, iz, zmatch)
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
223 equal_b = compare_range(self.b, ib, bmatch,
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
224 self.base, iz, zmatch)
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
225 same = compare_range(self.a, ia, amatch,
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
226 self.b, ib, bmatch)
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
227
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
228 if same:
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
229 yield 'same', ia, amatch
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
230 elif equal_a and not equal_b:
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
231 yield 'b', ib, bmatch
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
232 elif equal_b and not equal_a:
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
233 yield 'a', ia, amatch
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
234 elif not equal_a and not equal_b:
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
235 yield 'conflict', iz, zmatch, ia, amatch, ib, bmatch
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
236 else:
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
237 raise AssertionError("can't handle a=b=base but unmatched")
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
238
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
239 ia = amatch
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
240 ib = bmatch
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
241 iz = zmatch
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
242
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
243 # if the same part of the base was deleted on both sides
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
244 # that's OK, we can just skip it.
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
245
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ea7b982b6c08 Remove trailing spaces
Thomas Arendsen Hein <thomas@intevation.de>
parents: 4408
diff changeset
246
4362
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
247 if matchlen > 0:
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
248 assert ia == amatch
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
249 assert ib == bmatch
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
250 assert iz == zmatch
5081
ea7b982b6c08 Remove trailing spaces
Thomas Arendsen Hein <thomas@intevation.de>
parents: 4408
diff changeset
251
4362
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
252 yield 'unchanged', zmatch, zend
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
253 iz = zend
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
254 ia = aend
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
255 ib = bend
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ea7b982b6c08 Remove trailing spaces
Thomas Arendsen Hein <thomas@intevation.de>
parents: 4408
diff changeset
256
4362
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
257 def find_sync_regions(self):
14549
48ec0763afbb check-code: catch misspellings of descendant
Matt Mackall <mpm@selenic.com>
parents: 14329
diff changeset
258 """Return a list of sync regions, where both descendants match the base.
4362
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
259
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
260 Generates a list of (base1, base2, a1, a2, b1, b2). There is
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
261 always a zero-length sync region at the end of all the files.
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
262 """
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
263
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
264 ia = ib = 0
4363
2e3c54fb79a3 actually port simplemerge to hg
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4362
diff changeset
265 amatches = mdiff.get_matching_blocks(self.basetext, self.atext)
2e3c54fb79a3 actually port simplemerge to hg
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4362
diff changeset
266 bmatches = mdiff.get_matching_blocks(self.basetext, self.btext)
4362
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
267 len_a = len(amatches)
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
268 len_b = len(bmatches)
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
269
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
270 sl = []
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
271
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
272 while ia < len_a and ib < len_b:
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
273 abase, amatch, alen = amatches[ia]
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
274 bbase, bmatch, blen = bmatches[ib]
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
275
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
276 # there is an unconflicted block at i; how long does it
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
277 # extend? until whichever one ends earlier.
10282
08a0f04b56bd many, many trivial check-code fixups
Matt Mackall <mpm@selenic.com>
parents: 8312
diff changeset
278 i = intersect((abase, abase + alen), (bbase, bbase + blen))
4362
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
279 if i:
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
280 intbase = i[0]
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
281 intend = i[1]
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
282 intlen = intend - intbase
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
283
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
284 # found a match of base[i[0], i[1]]; this may be less than
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
285 # the region that matches in either one
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
286 assert intlen <= alen
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
287 assert intlen <= blen
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
288 assert abase <= intbase
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
289 assert bbase <= intbase
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
290
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
291 asub = amatch + (intbase - abase)
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
292 bsub = bmatch + (intbase - bbase)
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
293 aend = asub + intlen
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
294 bend = bsub + intlen
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
295
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
296 assert self.base[intbase:intend] == self.a[asub:aend], \
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
297 (self.base[intbase:intend], self.a[asub:aend])
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
298
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
299 assert self.base[intbase:intend] == self.b[bsub:bend]
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
300
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
301 sl.append((intbase, intend,
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
302 asub, aend,
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
303 bsub, bend))
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
304
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
305 # advance whichever one ends first in the base text
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
306 if (abase + alen) < (bbase + blen):
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
307 ia += 1
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
308 else:
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
309 ib += 1
5081
ea7b982b6c08 Remove trailing spaces
Thomas Arendsen Hein <thomas@intevation.de>
parents: 4408
diff changeset
310
4362
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
311 intbase = len(self.base)
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
312 abase = len(self.a)
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
313 bbase = len(self.b)
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
314 sl.append((intbase, intbase, abase, abase, bbase, bbase))
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
315
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
316 return sl
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
317
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
318 def find_unconflicted(self):
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
319 """Return a list of ranges in base that are not conflicted."""
4363
2e3c54fb79a3 actually port simplemerge to hg
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4362
diff changeset
320 am = mdiff.get_matching_blocks(self.basetext, self.atext)
2e3c54fb79a3 actually port simplemerge to hg
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4362
diff changeset
321 bm = mdiff.get_matching_blocks(self.basetext, self.btext)
4362
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
322
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
323 unc = []
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
324
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
325 while am and bm:
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
326 # there is an unconflicted block at i; how long does it
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
327 # extend? until whichever one ends earlier.
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
328 a1 = am[0][0]
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
329 a2 = a1 + am[0][2]
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
330 b1 = bm[0][0]
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
331 b2 = b1 + bm[0][2]
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
332 i = intersect((a1, a2), (b1, b2))
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
333 if i:
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
334 unc.append(i)
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
335
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
336 if a2 < b2:
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
337 del am[0]
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
338 else:
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
339 del bm[0]
5081
ea7b982b6c08 Remove trailing spaces
Thomas Arendsen Hein <thomas@intevation.de>
parents: 4408
diff changeset
340
4362
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
341 return unc
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
342
8269
bb9f13974d8e simplemerge: use ui.warn() for warnings
Steve Borho <steve@borho.org>
parents: 7280
diff changeset
343 def simplemerge(ui, local, base, other, **opts):
4364
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
344 def readfile(filename):
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
345 f = open(filename, "rb")
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
346 text = f.read()
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
347 f.close()
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
348 if util.binary(text):
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
349 msg = _("%s looks like a binary file.") % filename
14328
3c65cdcf3ba6 simplemerge: do not allow binary files to abort an entire merge
Steve Borho <steve@borho.org>
parents: 12401
diff changeset
350 if not opts.get('quiet'):
3c65cdcf3ba6 simplemerge: do not allow binary files to abort an entire merge
Steve Borho <steve@borho.org>
parents: 12401
diff changeset
351 ui.warn(_('warning: %s\n') % msg)
4364
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
352 if not opts.get('text'):
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
353 raise util.Abort(msg)
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
354 return text
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
355
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
356 name_a = local
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
357 name_b = other
22024
372ae2745acf simplemerge: support three labels when merging
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 22023
diff changeset
358 name_base = None
4364
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
359 labels = opts.get('label', [])
21272
4aeb7a6029ba merge: prevent simplemerge from mutating label list
Durham Goode <durham@fb.com>
parents: 16687
diff changeset
360 if len(labels) > 0:
4aeb7a6029ba merge: prevent simplemerge from mutating label list
Durham Goode <durham@fb.com>
parents: 16687
diff changeset
361 name_a = labels[0]
4aeb7a6029ba merge: prevent simplemerge from mutating label list
Durham Goode <durham@fb.com>
parents: 16687
diff changeset
362 if len(labels) > 1:
4aeb7a6029ba merge: prevent simplemerge from mutating label list
Durham Goode <durham@fb.com>
parents: 16687
diff changeset
363 name_b = labels[1]
4aeb7a6029ba merge: prevent simplemerge from mutating label list
Durham Goode <durham@fb.com>
parents: 16687
diff changeset
364 if len(labels) > 2:
22024
372ae2745acf simplemerge: support three labels when merging
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 22023
diff changeset
365 name_base = labels[2]
372ae2745acf simplemerge: support three labels when merging
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 22023
diff changeset
366 if len(labels) > 3:
372ae2745acf simplemerge: support three labels when merging
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 22023
diff changeset
367 raise util.Abort(_("can only specify three labels."))
4364
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
368
14328
3c65cdcf3ba6 simplemerge: do not allow binary files to abort an entire merge
Steve Borho <steve@borho.org>
parents: 12401
diff changeset
369 try:
3c65cdcf3ba6 simplemerge: do not allow binary files to abort an entire merge
Steve Borho <steve@borho.org>
parents: 12401
diff changeset
370 localtext = readfile(local)
3c65cdcf3ba6 simplemerge: do not allow binary files to abort an entire merge
Steve Borho <steve@borho.org>
parents: 12401
diff changeset
371 basetext = readfile(base)
3c65cdcf3ba6 simplemerge: do not allow binary files to abort an entire merge
Steve Borho <steve@borho.org>
parents: 12401
diff changeset
372 othertext = readfile(other)
3c65cdcf3ba6 simplemerge: do not allow binary files to abort an entire merge
Steve Borho <steve@borho.org>
parents: 12401
diff changeset
373 except util.Abort:
3c65cdcf3ba6 simplemerge: do not allow binary files to abort an entire merge
Steve Borho <steve@borho.org>
parents: 12401
diff changeset
374 return 1
4364
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
375
15381
c519cd8f0169 backout dbdb777502dc (issue3077) (issue3071)
Matt Mackall <mpm@selenic.com>
parents: 15355
diff changeset
376 local = os.path.realpath(local)
4364
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
377 if not opts.get('print'):
13970
d13913355390 move opener from util to scmutil
Adrian Buehlmann <adrian@cadifra.com>
parents: 12401
diff changeset
378 opener = scmutil.opener(os.path.dirname(local))
4364
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
379 out = opener(os.path.basename(local), "w", atomictemp=True)
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
380 else:
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
381 out = sys.stdout
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
382
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
383 m3 = Merge3Text(basetext, localtext, othertext)
22024
372ae2745acf simplemerge: support three labels when merging
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 22023
diff changeset
384 extrakwargs = {}
372ae2745acf simplemerge: support three labels when merging
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 22023
diff changeset
385 if name_base is not None:
372ae2745acf simplemerge: support three labels when merging
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 22023
diff changeset
386 extrakwargs['base_marker'] = '|||||||'
372ae2745acf simplemerge: support three labels when merging
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 22023
diff changeset
387 extrakwargs['name_base'] = name_base
372ae2745acf simplemerge: support three labels when merging
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 22023
diff changeset
388 for line in m3.merge_lines(name_a=name_a, name_b=name_b, **extrakwargs):
4364
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
389 out.write(line)
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
390
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
391 if not opts.get('print'):
15057
774da7121fc9 atomictempfile: make close() consistent with other file-like objects.
Greg Ward <greg@gerg.ca>
parents: 14549
diff changeset
392 out.close()
4364
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
393
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
394 if m3.conflicts:
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
395 if not opts.get('quiet'):
8269
bb9f13974d8e simplemerge: use ui.warn() for warnings
Steve Borho <steve@borho.org>
parents: 7280
diff changeset
396 ui.warn(_("warning: conflicts during merge.\n"))
4364
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
397 return 1