1
1
# Copyright (C) 2004, 2005 by Canonical Ltd
3
3
# This program is free software; you can redistribute it and/or modify
4
4
# it under the terms of the GNU General Public License as published by
5
5
# the Free Software Foundation; either version 2 of the License, or
6
6
# (at your option) any later version.
8
8
# This program is distributed in the hope that it will be useful,
9
9
# but WITHOUT ANY WARRANTY; without even the implied warranty of
10
10
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11
11
# GNU General Public License for more details.
13
13
# You should have received a copy of the GNU General Public License
14
14
# along with this program; if not, write to the Free Software
15
15
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
68
64
incorporating the changes from both BASE->OTHER and BASE->THIS.
69
65
All three will typically be sequences of lines."""
70
66
def __init__(self, base, a, b):
71
check_text_lines(base)
70
from difflib import SequenceMatcher
71
self.a_ops = SequenceMatcher(None, base, a).get_opcodes()
72
self.b_ops = SequenceMatcher(None, base, b).get_opcodes()
80
76
def merge_lines(self,
84
79
start_marker='<<<<<<<',
85
80
mid_marker='=======',
86
81
end_marker='>>>>>>>',
89
83
"""Return merge in cvs-like form.
91
if base_marker and reprocess:
92
raise CantReprocessAndShowBase()
94
86
start_marker = start_marker + ' ' + name_a
96
88
end_marker = end_marker + ' ' + name_b
97
if name_base and base_marker:
98
base_marker = base_marker + ' ' + name_base
99
merge_regions = self.merge_regions()
100
if reprocess is True:
101
merge_regions = self.reprocess_merge_regions(merge_regions)
102
for t in merge_regions:
90
for t in self.merge_regions():
104
92
if what == 'unchanged':
105
93
for i in range(t[1], t[2]):
284
def reprocess_merge_regions(self, merge_regions):
285
"""Where there are conflict regions, remove the agreed lines.
287
Lines where both A and B have made the same changes are
290
for region in merge_regions:
291
if region[0] != "conflict":
294
type, iz, zmatch, ia, amatch, ib, bmatch = region
295
a_region = self.a[ia:amatch]
296
b_region = self.b[ib:bmatch]
297
matches = bzrlib.patiencediff.PatienceSequenceMatcher(
298
None, a_region, b_region).get_matching_blocks()
301
for region_ia, region_ib, region_len in matches[:-1]:
304
reg = self.mismatch_region(next_a, region_ia, next_b,
308
yield 'same', region_ia, region_len+region_ia
309
next_a = region_ia + region_len
310
next_b = region_ib + region_len
311
reg = self.mismatch_region(next_a, amatch, next_b, bmatch)
317
def mismatch_region(next_a, region_ia, next_b, region_ib):
318
if next_a < region_ia or next_b < region_ib:
319
return 'conflict', None, None, next_a, region_ia, next_b, region_ib
322
269
def find_sync_regions(self):
323
270
"""Return a list of sync regions, where both descendents match the base.
325
272
Generates a list of (base1, base2, a1, a2, b1, b2). There is
326
273
always a zero-length sync region at the end of all the files.
275
from difflib import SequenceMatcher
330
amatches = bzrlib.patiencediff.PatienceSequenceMatcher(
331
None, self.base, self.a).get_matching_blocks()
332
bmatches = bzrlib.patiencediff.PatienceSequenceMatcher(
333
None, self.base, self.b).get_matching_blocks()
278
amatches = SequenceMatcher(None, self.base, self.a).get_matching_blocks()
279
bmatches = SequenceMatcher(None, self.base, self.b).get_matching_blocks()
334
280
len_a = len(amatches)
335
281
len_b = len(bmatches)
387
333
def find_unconflicted(self):
388
334
"""Return a list of ranges in base that are not conflicted."""
389
am = bzrlib.patiencediff.PatienceSequenceMatcher(
390
None, self.base, self.a).get_matching_blocks()
391
bm = bzrlib.patiencediff.PatienceSequenceMatcher(
392
None, self.base, self.b).get_matching_blocks()
335
from difflib import SequenceMatcher
339
# don't sync-up on lines containing only blanks or pounds
340
junk_re = re.compile(r'^[ \t#]*$')
342
am = SequenceMatcher(junk_re.match, self.base, self.a).get_matching_blocks()
343
bm = SequenceMatcher(junk_re.match, self.base, self.b).get_matching_blocks()