Mercurial > public > mercurial-scm > hg

annotate mercurial/pure/diffhelpers.py @ 37566:f53b55b162f4

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
py3: get rid of character access from pure.diffhelpers 's' is a result of readline(), so 'c == "\n"' means 's == "\n"'.
author Yuya Nishihara <yuya@tcha.org>
date Mon, 09 Apr 2018 20:44:41 +0900
parents 80214358ac88
children 53021c4ef0b2
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
7702
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
1 # diffhelpers.py - pure Python implementation of diffhelpers.c
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
2 #
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
3 # Copyright 2009 Matt Mackall <mpm@selenic.com> and others
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
4 #
8225
46293a0c7e9f updated license to be explicit about GPL version 2
Martin Geisler <mg@lazybytes.net>
parents: 7702
diff changeset
5 # This software may be used and distributed according to the terms of the
10263
25e572394f5c Update license to GPLv2+
Matt Mackall <mpm@selenic.com>
parents: 8225
diff changeset
6 # GNU General Public License version 2 or any later version.
7702
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
7
27336
80214358ac88 diffhelpers: use absolute_import
Gregory Szorc <gregory.szorc@gmail.com>
parents: 12387
diff changeset
8 from __future__ import absolute_import
80214358ac88 diffhelpers: use absolute_import
Gregory Szorc <gregory.szorc@gmail.com>
parents: 12387
diff changeset
9
7702
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
10 def addlines(fp, hunk, lena, lenb, a, b):
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
11 while True:
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
12 todoa = lena - len(a)
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
13 todob = lenb - len(b)
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
14 num = max(todoa, todob)
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
15 if num == 0:
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
16 break
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
17 for i in xrange(num):
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
18 s = fp.readline()
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
19 if s == "\\ No newline at end of file\n":
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
20 fix_newline(hunk, a, b)
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
21 continue
37566
f53b55b162f4 py3: get rid of character access from pure.diffhelpers
Yuya Nishihara <yuya@tcha.org>
parents: 27336
diff changeset
22 if s == "\n":
7702
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
23 # Some patches may be missing the control char
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
24 # on empty lines. Supply a leading space.
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
25 s = " \n"
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
26 hunk.append(s)
37566
f53b55b162f4 py3: get rid of character access from pure.diffhelpers
Yuya Nishihara <yuya@tcha.org>
parents: 27336
diff changeset
27 if s.startswith('+'):
7702
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
28 b.append(s[1:])
37566
f53b55b162f4 py3: get rid of character access from pure.diffhelpers
Yuya Nishihara <yuya@tcha.org>
parents: 27336
diff changeset
29 elif s.startswith('-'):
7702
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
30 a.append(s)
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
31 else:
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
32 b.append(s[1:])
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
33 a.append(s)
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
34 return 0
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
35
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
36 def fix_newline(hunk, a, b):
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
37 l = hunk[-1]
10551
f61dced1367a fix test-mq-eol under --pure (mimic diffhelper.c behaviour)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 10263
diff changeset
38 # tolerate CRLF in last line
f61dced1367a fix test-mq-eol under --pure (mimic diffhelper.c behaviour)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 10263
diff changeset
39 if l.endswith('\r\n'):
f61dced1367a fix test-mq-eol under --pure (mimic diffhelper.c behaviour)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 10263
diff changeset
40 hline = l[:-2]
f61dced1367a fix test-mq-eol under --pure (mimic diffhelper.c behaviour)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 10263
diff changeset
41 else:
f61dced1367a fix test-mq-eol under --pure (mimic diffhelper.c behaviour)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 10263
diff changeset
42 hline = l[:-1]
7702
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
43
37566
f53b55b162f4 py3: get rid of character access from pure.diffhelpers
Yuya Nishihara <yuya@tcha.org>
parents: 27336
diff changeset
44 if hline.startswith((' ', '+')):
10551
f61dced1367a fix test-mq-eol under --pure (mimic diffhelper.c behaviour)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 10263
diff changeset
45 b[-1] = hline[1:]
37566
f53b55b162f4 py3: get rid of character access from pure.diffhelpers
Yuya Nishihara <yuya@tcha.org>
parents: 27336
diff changeset
46 if hline.startswith((' ', '-')):
7702
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
47 a[-1] = hline
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
48 hunk[-1] = hline
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
49 return 0
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
50
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
51
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
52 def testhunk(a, b, bstart):
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
53 alen = len(a)
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
54 blen = len(b)
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
55 if alen > blen - bstart:
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
56 return -1
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
57 for i in xrange(alen):
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
58 if a[i][1:] != b[i + bstart]:
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
59 return -1
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
60 return 0