Mercurial > public > mercurial-scm > hg-stable

annotate mercurial/mdiff.py @ 15437:8f08b635cdce

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
diff: always use / in paths in diff Subrepo diffs would sometimes use backslash on windows.
author Mads Kiilerich <mads@kiilerich.com>
date Mon, 07 Nov 2011 02:49:00 +0100
parents 16dc9a32ca04
children f520c9616db5
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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75840796e8e2 mdiff.py: kill #! line, add copyright notice
mpm@selenic.com
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1 # mdiff.py - diff and patch routines for mercurial
75840796e8e2 mdiff.py: kill #! line, add copyright notice
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2 #
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3 # Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
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4 #
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5 # This software may be used and distributed according to the terms of the
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6 # GNU General Public License version 2 or any later version.
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7
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8 from i18n import _
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9 import bdiff, mpatch, util
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10 import re, struct
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11
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12 def splitnewlines(text):
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13 '''like str.splitlines, but only split on newlines.'''
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14 lines = [l + '\n' for l in text.split('\n')]
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15 if lines:
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16 if lines[-1] == '\n':
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17 lines.pop()
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18 else:
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19 lines[-1] = lines[-1][:-1]
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20 return lines
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21
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22 class diffopts(object):
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23 '''context is the number of context lines
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24 text treats all files as text
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25 showfunc enables diff -p output
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26 git enables the git extended patch format
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27 nodates removes dates from diff headers
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28 ignorews ignores all whitespace changes in the diff
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29 ignorewsamount ignores changes in the amount of whitespace
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30 ignoreblanklines ignores changes whose lines are all blank
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31 upgrade generates git diffs to avoid data loss
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32 '''
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33
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34 defaults = {
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35 'context': 3,
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36 'text': False,
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37 'showfunc': False,
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38 'git': False,
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39 'nodates': False,
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40 'ignorews': False,
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41 'ignorewsamount': False,
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42 'ignoreblanklines': False,
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43 'upgrade': False,
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44 }
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45
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46 __slots__ = defaults.keys()
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47
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48 def __init__(self, **opts):
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49 for k in self.__slots__:
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50 v = opts.get(k)
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51 if v is None:
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52 v = self.defaults[k]
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53 setattr(self, k, v)
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54
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55 try:
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56 self.context = int(self.context)
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57 except ValueError:
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58 raise util.Abort(_('diff context lines count must be '
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59 'an integer, not %r') % self.context)
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60
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61 def copy(self, **kwargs):
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62 opts = dict((k, getattr(self, k)) for k in self.defaults)
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63 opts.update(kwargs)
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64 return diffopts(**opts)
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65
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66 defaultopts = diffopts()
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67
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68 def wsclean(opts, text, blank=True):
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69 if opts.ignorews:
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70 text = re.sub('[ \t\r]+', '', text)
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71 elif opts.ignorewsamount:
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72 text = re.sub('[ \t\r]+', ' ', text)
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73 text = text.replace(' \n', '\n')
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74 if blank and opts.ignoreblanklines:
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75 text = re.sub('\n+', '', text)
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76 return text
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77
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78 def diffline(revs, a, b, opts):
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79 parts = ['diff']
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80 if opts.git:
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81 parts.append('--git')
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82 if revs and not opts.git:
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83 parts.append(' '.join(["-r %s" % rev for rev in revs]))
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84 if opts.git:
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85 parts.append('a/%s' % a)
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86 parts.append('b/%s' % b)
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87 else:
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88 parts.append(a)
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89 return ' '.join(parts) + '\n'
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90
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91 def unidiff(a, ad, b, bd, fn1, fn2, r=None, opts=defaultopts):
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92 def datetag(date, addtab=True):
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93 if not opts.git and not opts.nodates:
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94 return '\t%s\n' % date
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95 if addtab and ' ' in fn1:
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96 return '\t\n'
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97 return '\n'
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98
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99 if not a and not b:
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100 return ""
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101 epoch = util.datestr((0, 0))
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102
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103 fn1 = util.pconvert(fn1)
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104 fn2 = util.pconvert(fn2)
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105
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106 if not opts.text and (util.binary(a) or util.binary(b)):
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107 if a and b and len(a) == len(b) and a == b:
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108 return ""
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109 l = ['Binary file %s has changed\n' % fn1]
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110 elif not a:
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111 b = splitnewlines(b)
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112 if a is None:
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113 l1 = '--- /dev/null%s' % datetag(epoch, False)
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114 else:
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115 l1 = "--- %s%s" % ("a/" + fn1, datetag(ad))
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116 l2 = "+++ %s%s" % ("b/" + fn2, datetag(bd))
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117 l3 = "@@ -0,0 +1,%d @@\n" % len(b)
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118 l = [l1, l2, l3] + ["+" + e for e in b]
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119 elif not b:
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120 a = splitnewlines(a)
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121 l1 = "--- %s%s" % ("a/" + fn1, datetag(ad))
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122 if b is None:
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123 l2 = '+++ /dev/null%s' % datetag(epoch, False)
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124 else:
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125 l2 = "+++ %s%s" % ("b/" + fn2, datetag(bd))
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126 l3 = "@@ -1,%d +0,0 @@\n" % len(a)
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127 l = [l1, l2, l3] + ["-" + e for e in a]
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128 else:
2251
35fb62a3a673 fix speed regression in mdiff caused by line split bugfix.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2248
diff changeset
129 al = splitnewlines(a)
35fb62a3a673 fix speed regression in mdiff caused by line split bugfix.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2248
diff changeset
130 bl = splitnewlines(b)
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Benoit Boissinot <benoit.boissinot@ens-lyon.org>
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diff changeset
131 l = list(_unidiff(a, b, al, bl, opts=opts))
10282
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parents: 10264
diff changeset
132 if not l:
08a0f04b56bd many, many trivial check-code fixups
Matt Mackall <mpm@selenic.com>
parents: 10264
diff changeset
133 return ""
10614
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parents: 10282
diff changeset
134
d0050f36e688 remove header handling out of mdiff.bunidiff, rename it
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parents: 10282
diff changeset
135 l.insert(0, "--- a/%s%s" % (fn1, datetag(ad)))
d0050f36e688 remove header handling out of mdiff.bunidiff, rename it
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parents: 10282
diff changeset
136 l.insert(1, "+++ b/%s%s" % (fn2, datetag(bd)))
170
e6c621a825f2 hg diff: fix missing final newline bug
mpm@selenic.com
parents: 127
diff changeset
137
e6c621a825f2 hg diff: fix missing final newline bug
mpm@selenic.com
parents: 127
diff changeset
138 for ln in xrange(len(l)):
e6c621a825f2 hg diff: fix missing final newline bug
mpm@selenic.com
parents: 127
diff changeset
139 if l[ln][-1] != '\n':
e6c621a825f2 hg diff: fix missing final newline bug
mpm@selenic.com
parents: 127
diff changeset
140 l[ln] += "\n\ No newline at end of file\n"
e6c621a825f2 hg diff: fix missing final newline bug
mpm@selenic.com
parents: 127
diff changeset
141
396
8f8bb77d560e Show revisions in diffs like CVS, based on a patch from Goffredo Baroncelli.
Thomas Arendsen Hein <thomas@intevation.de>
parents: 361
diff changeset
142 if r:
7200
ca5ac40949dc patch/diff: use a separate function to write the first line of a file diff
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 6871
diff changeset
143 l.insert(0, diffline(r, fn1, fn2, opts))
396
8f8bb77d560e Show revisions in diffs like CVS, based on a patch from Goffredo Baroncelli.
Thomas Arendsen Hein <thomas@intevation.de>
parents: 361
diff changeset
144
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
145 return "".join(l)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
146
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parents: 10282
diff changeset
147 # creates a headerless unified diff
1637
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diff changeset
148 # t1 and t2 are the text to be diffed
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diff changeset
149 # l1 and l2 are the text broken up into lines
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diff changeset
150 def _unidiff(t1, t2, l1, l2, opts=defaultopts):
1637
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diff changeset
151 def contextend(l, len):
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4ec58b157265 refactor text diff/patch code.
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diff changeset
152 ret = l + opts.context
1637
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diff changeset
153 if ret > len:
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diff changeset
154 ret = len
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diff changeset
155 return ret
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156
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diff changeset
157 def contextstart(l):
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diff changeset
158 ret = l - opts.context
1637
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diff changeset
159 if ret < 0:
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160 return 0
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161 return ret
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diff changeset
162
15141
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Brodie Rao <brodie@bitheap.org>
parents: 12751
diff changeset
163 lastfunc = [0, '']
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diff changeset
164 def yieldhunk(hunk):
1637
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165 (astart, a2, bstart, b2, delta) = hunk
3b1b44b917f4 Add new bdiff based unidiff generation.
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diff changeset
166 aend = contextend(a2, len(l1))
3b1b44b917f4 Add new bdiff based unidiff generation.
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diff changeset
167 alen = aend - astart
3b1b44b917f4 Add new bdiff based unidiff generation.
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diff changeset
168 blen = b2 - bstart + aend - a2
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diff changeset
169
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diff changeset
170 func = ""
2874
4ec58b157265 refactor text diff/patch code.
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diff changeset
171 if opts.showfunc:
15141
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parents: 12751
diff changeset
172 lastpos, func = lastfunc
16dc9a32ca04 mdiff: speed up showfunc for large diffs
Brodie Rao <brodie@bitheap.org>
parents: 12751
diff changeset
173 # walk backwards from the start of the context up to the start of
16dc9a32ca04 mdiff: speed up showfunc for large diffs
Brodie Rao <brodie@bitheap.org>
parents: 12751
diff changeset
174 # the previous hunk context until we find a line starting with an
16dc9a32ca04 mdiff: speed up showfunc for large diffs
Brodie Rao <brodie@bitheap.org>
parents: 12751
diff changeset
175 # alphanumeric char.
16dc9a32ca04 mdiff: speed up showfunc for large diffs
Brodie Rao <brodie@bitheap.org>
parents: 12751
diff changeset
176 for i in xrange(astart - 1, lastpos - 1, -1):
16dc9a32ca04 mdiff: speed up showfunc for large diffs
Brodie Rao <brodie@bitheap.org>
parents: 12751
diff changeset
177 if l1[i][0].isalnum():
16dc9a32ca04 mdiff: speed up showfunc for large diffs
Brodie Rao <brodie@bitheap.org>
parents: 12751
diff changeset
178 func = ' ' + l1[i].rstrip()[:40]
16dc9a32ca04 mdiff: speed up showfunc for large diffs
Brodie Rao <brodie@bitheap.org>
parents: 12751
diff changeset
179 lastfunc[1] = func
1637
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diff changeset
180 break
15141
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Brodie Rao <brodie@bitheap.org>
parents: 12751
diff changeset
181 # by recording this hunk's starting point as the next place to
16dc9a32ca04 mdiff: speed up showfunc for large diffs
Brodie Rao <brodie@bitheap.org>
parents: 12751
diff changeset
182 # start looking for function lines, we avoid reading any line in
16dc9a32ca04 mdiff: speed up showfunc for large diffs
Brodie Rao <brodie@bitheap.org>
parents: 12751
diff changeset
183 # the file more than once.
16dc9a32ca04 mdiff: speed up showfunc for large diffs
Brodie Rao <brodie@bitheap.org>
parents: 12751
diff changeset
184 lastfunc[0] = astart
1637
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diff changeset
185
3b1b44b917f4 Add new bdiff based unidiff generation.
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diff changeset
186 yield "@@ -%d,%d +%d,%d @@%s\n" % (astart + 1, alen,
3b1b44b917f4 Add new bdiff based unidiff generation.
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diff changeset
187 bstart + 1, blen, func)
3b1b44b917f4 Add new bdiff based unidiff generation.
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diff changeset
188 for x in delta:
3b1b44b917f4 Add new bdiff based unidiff generation.
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diff changeset
189 yield x
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diff changeset
190 for x in xrange(a2, aend):
3b1b44b917f4 Add new bdiff based unidiff generation.
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diff changeset
191 yield ' ' + l1[x]
3b1b44b917f4 Add new bdiff based unidiff generation.
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diff changeset
192
3b1b44b917f4 Add new bdiff based unidiff generation.
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diff changeset
193 # bdiff.blocks gives us the matching sequences in the files. The loop
3b1b44b917f4 Add new bdiff based unidiff generation.
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parents: 1540
diff changeset
194 # below finds the spaces between those matching sequences and translates
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
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diff changeset
195 # them into diff output.
3b1b44b917f4 Add new bdiff based unidiff generation.
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diff changeset
196 #
9827
4fe9ca519637 mdiff: fix diff -b/B/w on mixed whitespace hunks (issue127)
Patrick Mezard <pmezard@gmail.com>
parents: 8632
diff changeset
197 if opts.ignorews or opts.ignorewsamount:
4fe9ca519637 mdiff: fix diff -b/B/w on mixed whitespace hunks (issue127)
Patrick Mezard <pmezard@gmail.com>
parents: 8632
diff changeset
198 t1 = wsclean(opts, t1, False)
4fe9ca519637 mdiff: fix diff -b/B/w on mixed whitespace hunks (issue127)
Patrick Mezard <pmezard@gmail.com>
parents: 8632
diff changeset
199 t2 = wsclean(opts, t2, False)
4fe9ca519637 mdiff: fix diff -b/B/w on mixed whitespace hunks (issue127)
Patrick Mezard <pmezard@gmail.com>
parents: 8632
diff changeset
200
1637
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mason@suse.com
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diff changeset
201 diff = bdiff.blocks(t1, t2)
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
parents: 1540
diff changeset
202 hunk = None
8632
9e055cfdd620 replace "i in range(len(xs))" with "i, x in enumerate(xs)"
Martin Geisler <mg@lazybytes.net>
parents: 8312
diff changeset
203 for i, s1 in enumerate(diff):
1637
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
parents: 1540
diff changeset
204 # The first match is special.
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
parents: 1540
diff changeset
205 # we've either found a match starting at line 0 or a match later
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
parents: 1540
diff changeset
206 # in the file. If it starts later, old and new below will both be
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
parents: 1540
diff changeset
207 # empty and we'll continue to the next match.
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
parents: 1540
diff changeset
208 if i > 0:
10282
08a0f04b56bd many, many trivial check-code fixups
Matt Mackall <mpm@selenic.com>
parents: 10264
diff changeset
209 s = diff[i - 1]
1637
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diff changeset
210 else:
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
parents: 1540
diff changeset
211 s = [0, 0, 0, 0]
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
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diff changeset
212 delta = []
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
parents: 1540
diff changeset
213 a1 = s[1]
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
parents: 1540
diff changeset
214 a2 = s1[0]
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
parents: 1540
diff changeset
215 b1 = s[3]
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
parents: 1540
diff changeset
216 b2 = s1[2]
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
parents: 1540
diff changeset
217
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
parents: 1540
diff changeset
218 old = l1[a1:a2]
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
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diff changeset
219 new = l2[b1:b2]
3b1b44b917f4 Add new bdiff based unidiff generation.
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diff changeset
220
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
parents: 1540
diff changeset
221 # bdiff sometimes gives huge matches past eof, this check eats them,
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
parents: 1540
diff changeset
222 # and deals with the special first match case described above
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
parents: 1540
diff changeset
223 if not old and not new:
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
parents: 1540
diff changeset
224 continue
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
parents: 1540
diff changeset
225
9827
4fe9ca519637 mdiff: fix diff -b/B/w on mixed whitespace hunks (issue127)
Patrick Mezard <pmezard@gmail.com>
parents: 8632
diff changeset
226 if opts.ignoreblanklines:
4878
372d93f03d3a diff: correctly handle combinations of whitespace options
Matt Mackall <mpm@selenic.com>
parents: 4679
diff changeset
227 if wsclean(opts, "".join(old)) == wsclean(opts, "".join(new)):
1637
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
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diff changeset
228 continue
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
parents: 1540
diff changeset
229
3b1b44b917f4 Add new bdiff based unidiff generation.
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diff changeset
230 astart = contextstart(a1)
3b1b44b917f4 Add new bdiff based unidiff generation.
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diff changeset
231 bstart = contextstart(b1)
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
parents: 1540
diff changeset
232 prev = None
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
parents: 1540
diff changeset
233 if hunk:
3b1b44b917f4 Add new bdiff based unidiff generation.
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parents: 1540
diff changeset
234 # join with the previous hunk if it falls inside the context
2874
4ec58b157265 refactor text diff/patch code.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2859
diff changeset
235 if astart < hunk[1] + opts.context + 1:
1637
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
parents: 1540
diff changeset
236 prev = hunk
3b1b44b917f4 Add new bdiff based unidiff generation.
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parents: 1540
diff changeset
237 astart = hunk[1]
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
parents: 1540
diff changeset
238 bstart = hunk[3]
3b1b44b917f4 Add new bdiff based unidiff generation.
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parents: 1540
diff changeset
239 else:
10614
d0050f36e688 remove header handling out of mdiff.bunidiff, rename it
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parents: 10282
diff changeset
240 for x in yieldhunk(hunk):
1637
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diff changeset
241 yield x
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
parents: 1540
diff changeset
242 if prev:
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
parents: 1540
diff changeset
243 # we've joined the previous hunk, record the new ending points.
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
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diff changeset
244 hunk[1] = a2
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
parents: 1540
diff changeset
245 hunk[3] = b2
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
parents: 1540
diff changeset
246 delta = hunk[4]
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
parents: 1540
diff changeset
247 else:
3b1b44b917f4 Add new bdiff based unidiff generation.
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diff changeset
248 # create a new hunk
10282
08a0f04b56bd many, many trivial check-code fixups
Matt Mackall <mpm@selenic.com>
parents: 10264
diff changeset
249 hunk = [astart, a2, bstart, b2, delta]
1637
3b1b44b917f4 Add new bdiff based unidiff generation.
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diff changeset
250
10282
08a0f04b56bd many, many trivial check-code fixups
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parents: 10264
diff changeset
251 delta[len(delta):] = [' ' + x for x in l1[astart:a1]]
08a0f04b56bd many, many trivial check-code fixups
Matt Mackall <mpm@selenic.com>
parents: 10264
diff changeset
252 delta[len(delta):] = ['-' + x for x in old]
08a0f04b56bd many, many trivial check-code fixups
Matt Mackall <mpm@selenic.com>
parents: 10264
diff changeset
253 delta[len(delta):] = ['+' + x for x in new]
1637
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
parents: 1540
diff changeset
254
3b1b44b917f4 Add new bdiff based unidiff generation.
mason@suse.com
parents: 1540
diff changeset
255 if hunk:
10614
d0050f36e688 remove header handling out of mdiff.bunidiff, rename it
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parents: 10282
diff changeset
256 for x in yieldhunk(hunk):
1637
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parents: 1540
diff changeset
257 yield x
3b1b44b917f4 Add new bdiff based unidiff generation.
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parents: 1540
diff changeset
258
120
bae6f0328f63 Add a function to return the new text from a binary diff
mpm@selenic.com
parents: 75
diff changeset
259 def patchtext(bin):
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mpm@selenic.com
parents: 75
diff changeset
260 pos = 0
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mpm@selenic.com
parents: 75
diff changeset
261 t = []
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mpm@selenic.com
parents: 75
diff changeset
262 while pos < len(bin):
bae6f0328f63 Add a function to return the new text from a binary diff
mpm@selenic.com
parents: 75
diff changeset
263 p1, p2, l = struct.unpack(">lll", bin[pos:pos + 12])
bae6f0328f63 Add a function to return the new text from a binary diff
mpm@selenic.com
parents: 75
diff changeset
264 pos += 12
bae6f0328f63 Add a function to return the new text from a binary diff
mpm@selenic.com
parents: 75
diff changeset
265 t.append(bin[pos:pos + l])
bae6f0328f63 Add a function to return the new text from a binary diff
mpm@selenic.com
parents: 75
diff changeset
266 pos += l
bae6f0328f63 Add a function to return the new text from a binary diff
mpm@selenic.com
parents: 75
diff changeset
267 return "".join(t)
bae6f0328f63 Add a function to return the new text from a binary diff
mpm@selenic.com
parents: 75
diff changeset
268
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
269 def patch(a, bin):
12025
2315a95ee887 mdiff.patch(): add a special case for when the base text is empty
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 10614
diff changeset
270 if len(a) == 0:
2315a95ee887 mdiff.patch(): add a special case for when the base text is empty
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 10614
diff changeset
271 # skip over trivial delta header
2315a95ee887 mdiff.patch(): add a special case for when the base text is empty
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 10614
diff changeset
272 return buffer(bin, 12)
1379
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Matt Mackall <mpm@selenic.com>
parents: 1378
diff changeset
273 return mpatch.patches(a, [bin])
432
3b9e3d3d2810 Start using bdiff for generating deltas
mpm@selenic.com
parents: 396
diff changeset
274
4361
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4108
diff changeset
275 # similar to difflib.SequenceMatcher.get_matching_blocks
99c853a1408c add mdiff.get_matching_blocks
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4108
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276 def get_matching_blocks(a, b):
99c853a1408c add mdiff.get_matching_blocks
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4108
diff changeset
277 return [(d[0], d[2], d[1] - d[0]) for d in bdiff.blocks(a, b)]
99c853a1408c add mdiff.get_matching_blocks
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4108
diff changeset
278
5367
7530334bf301 revlog: generate trivial deltas against null revision
Matt Mackall <mpm@selenic.com>
parents: 4878
diff changeset
279 def trivialdiffheader(length):
7530334bf301 revlog: generate trivial deltas against null revision
Matt Mackall <mpm@selenic.com>
parents: 4878
diff changeset
280 return struct.pack(">lll", 0, 0, length)
7530334bf301 revlog: generate trivial deltas against null revision
Matt Mackall <mpm@selenic.com>
parents: 4878
diff changeset
281
1379
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Matt Mackall <mpm@selenic.com>
parents: 1378
diff changeset
282 patches = mpatch.patches
2078
441ea218414e Fill in the uncompressed size during revlog.addgroup
mason@suse.com
parents: 1723
diff changeset
283 patchedsize = mpatch.patchedsize
432
3b9e3d3d2810 Start using bdiff for generating deltas
mpm@selenic.com
parents: 396
diff changeset
284 textdiff = bdiff.bdiff