annotate mercurial/simplemerge.py @ 36729:389b950f5190

py3: use startswith() instead of slicing to detect leading whitespace
author Yuya Nishihara <yuya@tcha.org>
date Sun, 04 Mar 2018 15:24:45 -0500
parents 93c4958d987c
children f0b6fbea00cf
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
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19 from __future__ import absolute_import
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20
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21 from .i18n import _
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22 from . import (
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23 error,
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24 mdiff,
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25 pycompat,
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26 util,
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27 )
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28
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29 class CantReprocessAndShowBase(Exception):
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30 pass
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31
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32 def intersect(ra, rb):
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33 """Given two ranges return the range where they intersect or None.
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34
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35 >>> intersect((0, 10), (0, 6))
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36 (0, 6)
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37 >>> intersect((0, 10), (5, 15))
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38 (5, 10)
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39 >>> intersect((0, 10), (10, 15))
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40 >>> intersect((0, 9), (10, 15))
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41 >>> intersect((0, 9), (7, 15))
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42 (7, 9)
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43 """
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44 assert ra[0] <= ra[1]
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45 assert rb[0] <= rb[1]
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46
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47 sa = max(ra[0], rb[0])
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48 sb = min(ra[1], rb[1])
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49 if sa < sb:
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50 return sa, sb
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51 else:
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52 return None
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53
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54 def compare_range(a, astart, aend, b, bstart, bend):
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55 """Compare a[astart:aend] == b[bstart:bend], without slicing.
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56 """
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57 if (aend - astart) != (bend - bstart):
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58 return False
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59 for ia, ib in zip(xrange(astart, aend), xrange(bstart, bend)):
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60 if a[ia] != b[ib]:
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61 return False
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62 else:
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63 return True
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64
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65 class Merge3Text(object):
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66 """3-way merge of texts.
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67
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68 Given strings BASE, OTHER, THIS, tries to produce a combined text
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69 incorporating the changes from both BASE->OTHER and BASE->THIS."""
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70 def __init__(self, basetext, atext, btext, base=None, a=None, b=None):
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71 self.basetext = basetext
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72 self.atext = atext
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73 self.btext = btext
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74 if base is None:
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75 base = mdiff.splitnewlines(basetext)
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76 if a is None:
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77 a = mdiff.splitnewlines(atext)
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78 if b is None:
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79 b = mdiff.splitnewlines(btext)
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80 self.base = base
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81 self.a = a
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82 self.b = b
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83
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84 def merge_lines(self,
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85 name_a=None,
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86 name_b=None,
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87 name_base=None,
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88 start_marker='<<<<<<<',
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89 mid_marker='=======',
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90 end_marker='>>>>>>>',
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91 base_marker=None,
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92 localorother=None,
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93 minimize=False):
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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 and start_marker:
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104 start_marker = start_marker + ' ' + name_a
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105 if name_b and end_marker:
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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 if minimize:
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111 merge_regions = self.minimize(merge_regions)
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112 for t in merge_regions:
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113 what = t[0]
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114 if what == 'unchanged':
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115 for i in range(t[1], t[2]):
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116 yield self.base[i]
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117 elif what == 'a' or what == 'same':
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118 for i in range(t[1], t[2]):
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119 yield self.a[i]
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120 elif what == 'b':
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121 for i in range(t[1], t[2]):
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122 yield self.b[i]
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123 elif what == 'conflict':
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124 if localorother == 'local':
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125 for i in range(t[3], t[4]):
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126 yield self.a[i]
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127 elif localorother == 'other':
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128 for i in range(t[5], t[6]):
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129 yield self.b[i]
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130 else:
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131 self.conflicts = True
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132 if start_marker is not None:
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133 yield start_marker + newline
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Jordi Gutiérrez Hermoso <jordigh@octave.org>
parents: 26069
diff changeset
134 for i in range(t[3], t[4]):
ed12abab068e simplemerge: enable option to resolve conflicts one way
Jordi Gutiérrez Hermoso <jordigh@octave.org>
parents: 26069
diff changeset
135 yield self.a[i]
ed12abab068e simplemerge: enable option to resolve conflicts one way
Jordi Gutiérrez Hermoso <jordigh@octave.org>
parents: 26069
diff changeset
136 if base_marker is not None:
ed12abab068e simplemerge: enable option to resolve conflicts one way
Jordi Gutiérrez Hermoso <jordigh@octave.org>
parents: 26069
diff changeset
137 yield base_marker + newline
ed12abab068e simplemerge: enable option to resolve conflicts one way
Jordi Gutiérrez Hermoso <jordigh@octave.org>
parents: 26069
diff changeset
138 for i in range(t[1], t[2]):
ed12abab068e simplemerge: enable option to resolve conflicts one way
Jordi Gutiérrez Hermoso <jordigh@octave.org>
parents: 26069
diff changeset
139 yield self.base[i]
ed12abab068e simplemerge: enable option to resolve conflicts one way
Jordi Gutiérrez Hermoso <jordigh@octave.org>
parents: 26069
diff changeset
140 if mid_marker is not None:
ed12abab068e simplemerge: enable option to resolve conflicts one way
Jordi Gutiérrez Hermoso <jordigh@octave.org>
parents: 26069
diff changeset
141 yield mid_marker + newline
ed12abab068e simplemerge: enable option to resolve conflicts one way
Jordi Gutiérrez Hermoso <jordigh@octave.org>
parents: 26069
diff changeset
142 for i in range(t[5], t[6]):
ed12abab068e simplemerge: enable option to resolve conflicts one way
Jordi Gutiérrez Hermoso <jordigh@octave.org>
parents: 26069
diff changeset
143 yield self.b[i]
ed12abab068e simplemerge: enable option to resolve conflicts one way
Jordi Gutiérrez Hermoso <jordigh@octave.org>
parents: 26069
diff changeset
144 if end_marker is not None:
ed12abab068e simplemerge: enable option to resolve conflicts one way
Jordi Gutiérrez Hermoso <jordigh@octave.org>
parents: 26069
diff changeset
145 yield end_marker + newline
4362
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
146 else:
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
147 raise ValueError(what)
5081
ea7b982b6c08 Remove trailing spaces
Thomas Arendsen Hein <thomas@intevation.de>
parents: 4408
diff changeset
148
4362
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
149 def merge_groups(self):
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
150 """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
151
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
152 'unchanged', lines
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
153 Lines unchanged from base
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
154
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
155 'a', lines
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
156 Lines taken from a
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
157
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
158 'same', lines
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
159 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
160
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
161 'b', lines
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
162 Lines taken from b
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
163
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
164 'conflict', base_lines, a_lines, b_lines
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
165 Lines from base were changed to either a or b and conflict.
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
166 """
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
167 for t in self.merge_regions():
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
168 what = t[0]
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
169 if what == 'unchanged':
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
170 yield what, self.base[t[1]:t[2]]
12401
4cdaf1adafc8 backout most of 4f8067c94729
Matt Mackall <mpm@selenic.com>
parents: 12387
diff changeset
171 elif what == 'a' or what == 'same':
4362
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
172 yield what, self.a[t[1]:t[2]]
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
173 elif what == 'b':
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
174 yield what, self.b[t[1]:t[2]]
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
175 elif what == 'conflict':
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
176 yield (what,
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
177 self.base[t[1]:t[2]],
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
178 self.a[t[3]:t[4]],
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
179 self.b[t[5]:t[6]])
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
180 else:
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
181 raise ValueError(what)
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
182
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
183 def merge_regions(self):
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
184 """Return sequences of matching and conflicting regions.
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
185
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
186 This returns tuples, where the first value says what kind we
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
187 have:
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
188
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
189 'unchanged', start, end
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
190 Take a region of base[start:end]
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
191
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
192 'same', astart, aend
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
193 b and a are different from base but give the same result
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
194
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
195 'a', start, end
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
196 Non-clashing insertion from a[start:end]
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
197
28070
a504794cee29 merge: add some useful documentation
Ryan McElroy <rmcelroy@fb.com>
parents: 26614
diff changeset
198 'conflict', zstart, zend, astart, aend, bstart, bend
a504794cee29 merge: add some useful documentation
Ryan McElroy <rmcelroy@fb.com>
parents: 26614
diff changeset
199 Conflict between a and b, with z as common ancestor
a504794cee29 merge: add some useful documentation
Ryan McElroy <rmcelroy@fb.com>
parents: 26614
diff changeset
200
4362
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
201 Method is as follows:
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
202
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
203 The two sequences align only on regions which match the base
14549
48ec0763afbb check-code: catch misspellings of descendant
Matt Mackall <mpm@selenic.com>
parents: 14329
diff changeset
204 and both descendants. These are found by doing a two-way diff
4362
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
205 of each one against the base, and then finding the
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
206 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
207 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
208
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
209 The regions in between can be in any of three cases:
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
210 conflicted, or changed on only one side.
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
211 """
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
212
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
213 # section a[0:ia] has been disposed of, etc
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
214 iz = ia = ib = 0
5081
ea7b982b6c08 Remove trailing spaces
Thomas Arendsen Hein <thomas@intevation.de>
parents: 4408
diff changeset
215
16683
525fdb738975 cleanup: eradicate long lines
Brodie Rao <brodie@sf.io>
parents: 15782
diff changeset
216 for region in self.find_sync_regions():
525fdb738975 cleanup: eradicate long lines
Brodie Rao <brodie@sf.io>
parents: 15782
diff changeset
217 zmatch, zend, amatch, aend, bmatch, bend = region
4362
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
218 #print 'match base [%d:%d]' % (zmatch, zend)
5081
ea7b982b6c08 Remove trailing spaces
Thomas Arendsen Hein <thomas@intevation.de>
parents: 4408
diff changeset
219
4362
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
220 matchlen = zend - zmatch
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
221 assert matchlen >= 0
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
222 assert matchlen == (aend - amatch)
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
223 assert matchlen == (bend - bmatch)
5081
ea7b982b6c08 Remove trailing spaces
Thomas Arendsen Hein <thomas@intevation.de>
parents: 4408
diff changeset
224
4362
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
225 len_a = amatch - ia
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
226 len_b = bmatch - ib
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
227 len_base = zmatch - iz
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
228 assert len_a >= 0
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
229 assert len_b >= 0
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
230 assert len_base >= 0
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
231
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
232 #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
233
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
234 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
235 # 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
236 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
237 self.base, iz, zmatch)
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
238 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
239 self.base, iz, zmatch)
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
240 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
241 self.b, ib, bmatch)
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 same:
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
244 yield 'same', ia, amatch
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
245 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
246 yield 'b', ib, bmatch
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
247 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
248 yield 'a', ia, amatch
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
249 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
250 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
251 else:
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
252 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
253
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
254 ia = amatch
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
255 ib = bmatch
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
256 iz = zmatch
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
257
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
258 # 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
259 # 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
260
5081
ea7b982b6c08 Remove trailing spaces
Thomas Arendsen Hein <thomas@intevation.de>
parents: 4408
diff changeset
261
4362
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
262 if matchlen > 0:
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
263 assert ia == amatch
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
264 assert ib == bmatch
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
265 assert iz == zmatch
5081
ea7b982b6c08 Remove trailing spaces
Thomas Arendsen Hein <thomas@intevation.de>
parents: 4408
diff changeset
266
4362
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
267 yield 'unchanged', zmatch, zend
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
268 iz = zend
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
269 ia = aend
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
270 ib = bend
5081
ea7b982b6c08 Remove trailing spaces
Thomas Arendsen Hein <thomas@intevation.de>
parents: 4408
diff changeset
271
28071
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
272 def minimize(self, merge_regions):
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
273 """Trim conflict regions of lines where A and B sides match.
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
274
30332
318a24b52eeb spelling: fixes of non-dictionary words
Mads Kiilerich <madski@unity3d.com>
parents: 30323
diff changeset
275 Lines where both A and B have made the same changes at the beginning
28071
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diff changeset
276 or the end of each merge region are eliminated from the conflict
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
277 region and are instead considered the same.
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
278 """
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
279 for region in merge_regions:
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
280 if region[0] != "conflict":
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
281 yield region
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
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diff changeset
282 continue
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
283 issue, z1, z2, a1, a2, b1, b2 = region
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
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diff changeset
284 alen = a2 - a1
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
285 blen = b2 - b1
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
286
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
287 # find matches at the front
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
288 ii = 0
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
289 while ii < alen and ii < blen and \
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
290 self.a[a1 + ii] == self.b[b1 + ii]:
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
291 ii += 1
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
292 startmatches = ii
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
293
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
294 # find matches at the end
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Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
295 ii = 0
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
296 while ii < alen and ii < blen and \
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
297 self.a[a2 - ii - 1] == self.b[b2 - ii - 1]:
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
298 ii += 1
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
299 endmatches = ii
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
300
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
301 if startmatches > 0:
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
302 yield 'same', a1, a1 + startmatches
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
303
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
304 yield ('conflict', z1, z2,
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
305 a1 + startmatches, a2 - endmatches,
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
306 b1 + startmatches, b2 - endmatches)
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
307
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
308 if endmatches > 0:
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
309 yield 'same', a2 - endmatches, a2
261324dd5f5b merge: introduce method to minimize merge regions
Ryan McElroy <rmcelroy@fb.com>
parents: 28070
diff changeset
310
4362
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
311 def find_sync_regions(self):
14549
48ec0763afbb check-code: catch misspellings of descendant
Matt Mackall <mpm@selenic.com>
parents: 14329
diff changeset
312 """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
313
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
314 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
315 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
316 """
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 ia = ib = 0
4363
2e3c54fb79a3 actually port simplemerge to hg
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4362
diff changeset
319 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
320 bmatches = mdiff.get_matching_blocks(self.basetext, self.btext)
4362
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
321 len_a = len(amatches)
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
322 len_b = len(bmatches)
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
323
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
324 sl = []
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
325
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
326 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
327 abase, amatch, alen = amatches[ia]
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
328 bbase, bmatch, blen = bmatches[ib]
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
329
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
330 # 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
331 # extend? until whichever one ends earlier.
10282
08a0f04b56bd many, many trivial check-code fixups
Matt Mackall <mpm@selenic.com>
parents: 8312
diff changeset
332 i = intersect((abase, abase + alen), (bbase, bbase + blen))
4362
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 intbase = i[0]
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
335 intend = i[1]
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
336 intlen = intend - intbase
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
337
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
338 # 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
339 # 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
340 assert intlen <= alen
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
341 assert intlen <= blen
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
342 assert abase <= intbase
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
343 assert bbase <= intbase
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
344
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
345 asub = amatch + (intbase - abase)
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
346 bsub = bmatch + (intbase - bbase)
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
347 aend = asub + intlen
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
348 bend = bsub + intlen
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
349
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
350 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
351 (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
352
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
353 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
354
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
355 sl.append((intbase, intend,
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
356 asub, aend,
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
357 bsub, bend))
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
358
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
359 # 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
360 if (abase + alen) < (bbase + blen):
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
361 ia += 1
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
362 else:
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
363 ib += 1
5081
ea7b982b6c08 Remove trailing spaces
Thomas Arendsen Hein <thomas@intevation.de>
parents: 4408
diff changeset
364
4362
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
365 intbase = len(self.base)
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
366 abase = len(self.a)
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
367 bbase = len(self.b)
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
368 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
369
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
370 return sl
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
371
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
372 def find_unconflicted(self):
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
373 """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
374 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
375 bm = mdiff.get_matching_blocks(self.basetext, self.btext)
4362
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
376
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
377 unc = []
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
378
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
379 while am and bm:
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
380 # 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
381 # extend? until whichever one ends earlier.
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
382 a1 = am[0][0]
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
383 a2 = a1 + am[0][2]
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
384 b1 = bm[0][0]
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
385 b2 = b1 + bm[0][2]
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
386 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
387 if i:
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
388 unc.append(i)
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
389
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
390 if a2 < b2:
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
391 del am[0]
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
392 else:
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
393 del bm[0]
5081
ea7b982b6c08 Remove trailing spaces
Thomas Arendsen Hein <thomas@intevation.de>
parents: 4408
diff changeset
394
4362
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
395 return unc
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
396
33825
de573184686e simplemerge: extract verifytext as a helper function
Phil Cohen <phillco@fb.com>
parents: 33017
diff changeset
397 def _verifytext(text, path, ui, opts):
de573184686e simplemerge: extract verifytext as a helper function
Phil Cohen <phillco@fb.com>
parents: 33017
diff changeset
398 """verifies that text is non-binary (unless opts[text] is passed,
de573184686e simplemerge: extract verifytext as a helper function
Phil Cohen <phillco@fb.com>
parents: 33017
diff changeset
399 then we just warn)"""
de573184686e simplemerge: extract verifytext as a helper function
Phil Cohen <phillco@fb.com>
parents: 33017
diff changeset
400 if util.binary(text):
de573184686e simplemerge: extract verifytext as a helper function
Phil Cohen <phillco@fb.com>
parents: 33017
diff changeset
401 msg = _("%s looks like a binary file.") % path
de573184686e simplemerge: extract verifytext as a helper function
Phil Cohen <phillco@fb.com>
parents: 33017
diff changeset
402 if not opts.get('quiet'):
de573184686e simplemerge: extract verifytext as a helper function
Phil Cohen <phillco@fb.com>
parents: 33017
diff changeset
403 ui.warn(_('warning: %s\n') % msg)
de573184686e simplemerge: extract verifytext as a helper function
Phil Cohen <phillco@fb.com>
parents: 33017
diff changeset
404 if not opts.get('text'):
de573184686e simplemerge: extract verifytext as a helper function
Phil Cohen <phillco@fb.com>
parents: 33017
diff changeset
405 raise error.Abort(msg)
de573184686e simplemerge: extract verifytext as a helper function
Phil Cohen <phillco@fb.com>
parents: 33017
diff changeset
406 return text
de573184686e simplemerge: extract verifytext as a helper function
Phil Cohen <phillco@fb.com>
parents: 33017
diff changeset
407
33830
aa6c290a77fa filemerge: extract `_picklabels` as a helper function
Phil Cohen <phillco@fb.com>
parents: 33829
diff changeset
408 def _picklabels(defaults, overrides):
aa6c290a77fa filemerge: extract `_picklabels` as a helper function
Phil Cohen <phillco@fb.com>
parents: 33829
diff changeset
409 if len(overrides) > 3:
aa6c290a77fa filemerge: extract `_picklabels` as a helper function
Phil Cohen <phillco@fb.com>
parents: 33829
diff changeset
410 raise error.Abort(_("can only specify three labels."))
33933
39d253d088a9 simplemerge: refactor _picklabels to be more compact
Phil Cohen <phillco@fb.com>
parents: 33932
diff changeset
411 result = defaults[:]
39d253d088a9 simplemerge: refactor _picklabels to be more compact
Phil Cohen <phillco@fb.com>
parents: 33932
diff changeset
412 for i, override in enumerate(overrides):
39d253d088a9 simplemerge: refactor _picklabels to be more compact
Phil Cohen <phillco@fb.com>
parents: 33932
diff changeset
413 result[i] = override
39d253d088a9 simplemerge: refactor _picklabels to be more compact
Phil Cohen <phillco@fb.com>
parents: 33932
diff changeset
414 return result
33830
aa6c290a77fa filemerge: extract `_picklabels` as a helper function
Phil Cohen <phillco@fb.com>
parents: 33829
diff changeset
415
34049
6330df9d6393 simplemerge: remove unused `repo` parameter
Phil Cohen <phillco@fb.com>
parents: 33933
diff changeset
416 def simplemerge(ui, localctx, basectx, otherctx, **opts):
33828
8b91a4ff23ad simplemerge: use contexts to read file data from, if passed
Phil Cohen <phillco@fb.com>
parents: 33826
diff changeset
417 """Performs the simplemerge algorithm.
8b91a4ff23ad simplemerge: use contexts to read file data from, if passed
Phil Cohen <phillco@fb.com>
parents: 33826
diff changeset
418
33907
1ad3085239ad simplemerge: make context parameters non-optional
Phil Cohen <phillco@fb.com>
parents: 33906
diff changeset
419 The merged result is written into `localctx`.
33905
61b267a99fea simplemerge: stop reading from, and writing to, files
Phil Cohen <phillco@fb.com>
parents: 33904
diff changeset
420 """
35368
93c4958d987c py3: handle keyword arguments correctly in simplemerge.py
Pulkit Goyal <7895pulkit@gmail.com>
parents: 34049
diff changeset
421 opts = pycompat.byteskwargs(opts)
93c4958d987c py3: handle keyword arguments correctly in simplemerge.py
Pulkit Goyal <7895pulkit@gmail.com>
parents: 34049
diff changeset
422
33828
8b91a4ff23ad simplemerge: use contexts to read file data from, if passed
Phil Cohen <phillco@fb.com>
parents: 33826
diff changeset
423 def readctx(ctx):
33902
f39ba8237ed6 simplemerge: use `ctx.decoddeddata()` instead of `repo.wreaddata`
Phil Cohen <phillco@fb.com>
parents: 33830
diff changeset
424 # Merges were always run in the working copy before, which means
f39ba8237ed6 simplemerge: use `ctx.decoddeddata()` instead of `repo.wreaddata`
Phil Cohen <phillco@fb.com>
parents: 33830
diff changeset
425 # they used decoded data, if the user defined any repository
f39ba8237ed6 simplemerge: use `ctx.decoddeddata()` instead of `repo.wreaddata`
Phil Cohen <phillco@fb.com>
parents: 33830
diff changeset
426 # filters.
f39ba8237ed6 simplemerge: use `ctx.decoddeddata()` instead of `repo.wreaddata`
Phil Cohen <phillco@fb.com>
parents: 33830
diff changeset
427 #
f39ba8237ed6 simplemerge: use `ctx.decoddeddata()` instead of `repo.wreaddata`
Phil Cohen <phillco@fb.com>
parents: 33830
diff changeset
428 # Maintain that behavior today for BC, though perhaps in the future
f39ba8237ed6 simplemerge: use `ctx.decoddeddata()` instead of `repo.wreaddata`
Phil Cohen <phillco@fb.com>
parents: 33830
diff changeset
429 # it'd be worth considering whether merging encoded data (what the
f39ba8237ed6 simplemerge: use `ctx.decoddeddata()` instead of `repo.wreaddata`
Phil Cohen <phillco@fb.com>
parents: 33830
diff changeset
430 # repository usually sees) might be more useful.
f39ba8237ed6 simplemerge: use `ctx.decoddeddata()` instead of `repo.wreaddata`
Phil Cohen <phillco@fb.com>
parents: 33830
diff changeset
431 return _verifytext(ctx.decodeddata(), ctx.path(), ui, opts)
33828
8b91a4ff23ad simplemerge: use contexts to read file data from, if passed
Phil Cohen <phillco@fb.com>
parents: 33826
diff changeset
432
26069
09d6725cbc60 simplemerge: add 'mode' kwarg which - when 'union' - suppresses markers
Erik Huelsmann <ehuels@gmail.com>
parents: 25974
diff changeset
433 mode = opts.get('mode','merge')
33830
aa6c290a77fa filemerge: extract `_picklabels` as a helper function
Phil Cohen <phillco@fb.com>
parents: 33829
diff changeset
434 name_a, name_b, name_base = None, None, None
aa6c290a77fa filemerge: extract `_picklabels` as a helper function
Phil Cohen <phillco@fb.com>
parents: 33829
diff changeset
435 if mode != 'union':
33904
1915a5e809ca simplemerge: use context paths for default labels instead of file paths
Phil Cohen <phillco@fb.com>
parents: 33902
diff changeset
436 name_a, name_b, name_base = _picklabels([localctx.path(),
1915a5e809ca simplemerge: use context paths for default labels instead of file paths
Phil Cohen <phillco@fb.com>
parents: 33902
diff changeset
437 otherctx.path(), None],
33830
aa6c290a77fa filemerge: extract `_picklabels` as a helper function
Phil Cohen <phillco@fb.com>
parents: 33829
diff changeset
438 opts.get('label', []))
4364
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
439
14328
3c65cdcf3ba6 simplemerge: do not allow binary files to abort an entire merge
Steve Borho <steve@borho.org>
parents: 12401
diff changeset
440 try:
33905
61b267a99fea simplemerge: stop reading from, and writing to, files
Phil Cohen <phillco@fb.com>
parents: 33904
diff changeset
441 localtext = readctx(localctx)
61b267a99fea simplemerge: stop reading from, and writing to, files
Phil Cohen <phillco@fb.com>
parents: 33904
diff changeset
442 basetext = readctx(basectx)
61b267a99fea simplemerge: stop reading from, and writing to, files
Phil Cohen <phillco@fb.com>
parents: 33904
diff changeset
443 othertext = readctx(otherctx)
26587
56b2bcea2529 error: get Abort from 'error' instead of 'util'
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 26223
diff changeset
444 except error.Abort:
14328
3c65cdcf3ba6 simplemerge: do not allow binary files to abort an entire merge
Steve Borho <steve@borho.org>
parents: 12401
diff changeset
445 return 1
4364
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
446
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
447 m3 = Merge3Text(basetext, localtext, othertext)
28072
c3e9269d9602 merge: minimize conflicts when common base is not shown (issue4447)
Ryan McElroy <rmcelroy@fb.com>
parents: 28071
diff changeset
448 extrakwargs = {
c3e9269d9602 merge: minimize conflicts when common base is not shown (issue4447)
Ryan McElroy <rmcelroy@fb.com>
parents: 28071
diff changeset
449 "localorother": opts.get("localorother", None),
c3e9269d9602 merge: minimize conflicts when common base is not shown (issue4447)
Ryan McElroy <rmcelroy@fb.com>
parents: 28071
diff changeset
450 'minimize': True,
c3e9269d9602 merge: minimize conflicts when common base is not shown (issue4447)
Ryan McElroy <rmcelroy@fb.com>
parents: 28071
diff changeset
451 }
26069
09d6725cbc60 simplemerge: add 'mode' kwarg which - when 'union' - suppresses markers
Erik Huelsmann <ehuels@gmail.com>
parents: 25974
diff changeset
452 if mode == 'union':
09d6725cbc60 simplemerge: add 'mode' kwarg which - when 'union' - suppresses markers
Erik Huelsmann <ehuels@gmail.com>
parents: 25974
diff changeset
453 extrakwargs['start_marker'] = None
09d6725cbc60 simplemerge: add 'mode' kwarg which - when 'union' - suppresses markers
Erik Huelsmann <ehuels@gmail.com>
parents: 25974
diff changeset
454 extrakwargs['mid_marker'] = None
09d6725cbc60 simplemerge: add 'mode' kwarg which - when 'union' - suppresses markers
Erik Huelsmann <ehuels@gmail.com>
parents: 25974
diff changeset
455 extrakwargs['end_marker'] = None
09d6725cbc60 simplemerge: add 'mode' kwarg which - when 'union' - suppresses markers
Erik Huelsmann <ehuels@gmail.com>
parents: 25974
diff changeset
456 elif name_base is not None:
22024
372ae2745acf simplemerge: support three labels when merging
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 22023
diff changeset
457 extrakwargs['base_marker'] = '|||||||'
372ae2745acf simplemerge: support three labels when merging
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 22023
diff changeset
458 extrakwargs['name_base'] = name_base
28072
c3e9269d9602 merge: minimize conflicts when common base is not shown (issue4447)
Ryan McElroy <rmcelroy@fb.com>
parents: 28071
diff changeset
459 extrakwargs['minimize'] = False
33908
4074de97b512 simplemerge: simplify code now that we always write to a context
Phil Cohen <phillco@fb.com>
parents: 33907
diff changeset
460
4074de97b512 simplemerge: simplify code now that we always write to a context
Phil Cohen <phillco@fb.com>
parents: 33907
diff changeset
461 mergedtext = ""
33017
c31d45623304 py3: convert kwargs' keys' to str using pycompat.strkwargs()
Pulkit Goyal <7895pulkit@gmail.com>
parents: 31238
diff changeset
462 for line in m3.merge_lines(name_a=name_a, name_b=name_b,
c31d45623304 py3: convert kwargs' keys' to str using pycompat.strkwargs()
Pulkit Goyal <7895pulkit@gmail.com>
parents: 31238
diff changeset
463 **pycompat.strkwargs(extrakwargs)):
33908
4074de97b512 simplemerge: simplify code now that we always write to a context
Phil Cohen <phillco@fb.com>
parents: 33907
diff changeset
464 if opts.get('print'):
4074de97b512 simplemerge: simplify code now that we always write to a context
Phil Cohen <phillco@fb.com>
parents: 33907
diff changeset
465 ui.fout.write(line)
4074de97b512 simplemerge: simplify code now that we always write to a context
Phil Cohen <phillco@fb.com>
parents: 33907
diff changeset
466 else:
4074de97b512 simplemerge: simplify code now that we always write to a context
Phil Cohen <phillco@fb.com>
parents: 33907
diff changeset
467 mergedtext += line
4364
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
468
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
469 if not opts.get('print'):
33908
4074de97b512 simplemerge: simplify code now that we always write to a context
Phil Cohen <phillco@fb.com>
parents: 33907
diff changeset
470 localctx.write(mergedtext, localctx.flags())
4364
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
471
26069
09d6725cbc60 simplemerge: add 'mode' kwarg which - when 'union' - suppresses markers
Erik Huelsmann <ehuels@gmail.com>
parents: 25974
diff changeset
472 if m3.conflicts and not mode == 'union':
4364
d5c3a70f8422 polish the simplemerge command; add a test
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4363
diff changeset
473 return 1