annotate mercurial/diffhelper.py @ 51510:a2f1d97e5284 stable

sshpeer: fix path when handling invalid url exception In 73ed1d13c0bf the code was refactored but the error handling seems to have been missed (or maybe the object shoud have implemented __bytes__)
author Felipe Resende <felipe@fcresende.dev.br>
date Sat, 16 Mar 2024 18:37:07 -0300
parents d44e3c45f0e4
children f4733654f144
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
37803
72f6498c040b diffhelper: rename module to avoid conflicts with ancient C module (issue5846)
Yuya Nishihara <yuya@tcha.org>
parents: 37802
diff changeset
1 # diffhelper.py - helper routines for patch
7702
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
2 #
46819
d4ba4d51f85f contributor: change mentions of mpm to olivia
Raphaël Gomès <rgomes@octobus.net>
parents: 45154
diff changeset
3 # Copyright 2009 Olivia Mackall <olivia@selenic.com> and others
7702
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
37573
49b82cdb5983 patch: error out if reached to EOF while reading hunk
Yuya Nishihara <yuya@tcha.org>
parents: 37572
diff changeset
9 from .i18n import _
49b82cdb5983 patch: error out if reached to EOF while reading hunk
Yuya Nishihara <yuya@tcha.org>
parents: 37572
diff changeset
10
49b82cdb5983 patch: error out if reached to EOF while reading hunk
Yuya Nishihara <yuya@tcha.org>
parents: 37572
diff changeset
11 from . import (
49b82cdb5983 patch: error out if reached to EOF while reading hunk
Yuya Nishihara <yuya@tcha.org>
parents: 37572
diff changeset
12 error,
49b82cdb5983 patch: error out if reached to EOF while reading hunk
Yuya Nishihara <yuya@tcha.org>
parents: 37572
diff changeset
13 )
49b82cdb5983 patch: error out if reached to EOF while reading hunk
Yuya Nishihara <yuya@tcha.org>
parents: 37572
diff changeset
14
45154
10f48720ef95 diff: move no-eol text constant to a common location
Rodrigo Damazio Bovendorp <rdamazio@google.com>
parents: 43077
diff changeset
15 MISSING_NEWLINE_MARKER = b'\\ No newline at end of file\n'
10f48720ef95 diff: move no-eol text constant to a common location
Rodrigo Damazio Bovendorp <rdamazio@google.com>
parents: 43077
diff changeset
16
43075
57875cf423c9 style: run a patched black on a subset of mercurial
Augie Fackler <augie@google.com>
parents: 38783
diff changeset
17
7702
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
18 def addlines(fp, hunk, lena, lenb, a, b):
37567
53021c4ef0b2 diffhelpers: port docstrings from cext to pure
Yuya Nishihara <yuya@tcha.org>
parents: 37566
diff changeset
19 """Read lines from fp into the hunk
53021c4ef0b2 diffhelpers: port docstrings from cext to pure
Yuya Nishihara <yuya@tcha.org>
parents: 37566
diff changeset
20
53021c4ef0b2 diffhelpers: port docstrings from cext to pure
Yuya Nishihara <yuya@tcha.org>
parents: 37566
diff changeset
21 The hunk is parsed into two arrays, a and b. a gets the old state of
53021c4ef0b2 diffhelpers: port docstrings from cext to pure
Yuya Nishihara <yuya@tcha.org>
parents: 37566
diff changeset
22 the text, b gets the new state. The control char from the hunk is saved
53021c4ef0b2 diffhelpers: port docstrings from cext to pure
Yuya Nishihara <yuya@tcha.org>
parents: 37566
diff changeset
23 when inserting into a, but not b (for performance while deleting files.)
53021c4ef0b2 diffhelpers: port docstrings from cext to pure
Yuya Nishihara <yuya@tcha.org>
parents: 37566
diff changeset
24 """
7702
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
25 while True:
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
26 todoa = lena - len(a)
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
27 todob = lenb - len(b)
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
28 num = max(todoa, todob)
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
29 if num == 0:
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
30 break
49284
d44e3c45f0e4 py3: replace `pycompat.xrange` by `range`
Manuel Jacob <me@manueljacob.de>
parents: 48875
diff changeset
31 for i in range(num):
7702
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
32 s = fp.readline()
37573
49b82cdb5983 patch: error out if reached to EOF while reading hunk
Yuya Nishihara <yuya@tcha.org>
parents: 37572
diff changeset
33 if not s:
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43075
diff changeset
34 raise error.ParseError(_(b'incomplete hunk'))
45154
10f48720ef95 diff: move no-eol text constant to a common location
Rodrigo Damazio Bovendorp <rdamazio@google.com>
parents: 43077
diff changeset
35 if s == MISSING_NEWLINE_MARKER:
37570
c4c8d0d1267f diffhelpers: naming and whitespace cleanup
Yuya Nishihara <yuya@tcha.org>
parents: 37567
diff changeset
36 fixnewline(hunk, a, b)
7702
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
37 continue
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43075
diff changeset
38 if s == b'\n' or s == b'\r\n':
7702
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
39 # Some patches may be missing the control char
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
40 # on empty lines. Supply a leading space.
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43075
diff changeset
41 s = b' ' + s
7702
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
42 hunk.append(s)
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43075
diff changeset
43 if s.startswith(b'+'):
7702
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
44 b.append(s[1:])
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43075
diff changeset
45 elif s.startswith(b'-'):
7702
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
46 a.append(s)
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
47 else:
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
48 b.append(s[1:])
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
49 a.append(s)
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
50
43075
57875cf423c9 style: run a patched black on a subset of mercurial
Augie Fackler <augie@google.com>
parents: 38783
diff changeset
51
37570
c4c8d0d1267f diffhelpers: naming and whitespace cleanup
Yuya Nishihara <yuya@tcha.org>
parents: 37567
diff changeset
52 def fixnewline(hunk, a, b):
37567
53021c4ef0b2 diffhelpers: port docstrings from cext to pure
Yuya Nishihara <yuya@tcha.org>
parents: 37566
diff changeset
53 """Fix up the last lines of a and b when the patch has no newline at EOF"""
7702
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
54 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
55 # tolerate CRLF in last line
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43075
diff changeset
56 if l.endswith(b'\r\n'):
10551
f61dced1367a fix test-mq-eol under --pure (mimic diffhelper.c behaviour)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 10263
diff changeset
57 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
58 else:
f61dced1367a fix test-mq-eol under --pure (mimic diffhelper.c behaviour)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 10263
diff changeset
59 hline = l[:-1]
7702
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
60
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43075
diff changeset
61 if hline.startswith((b' ', b'+')):
10551
f61dced1367a fix test-mq-eol under --pure (mimic diffhelper.c behaviour)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 10263
diff changeset
62 b[-1] = hline[1:]
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43075
diff changeset
63 if hline.startswith((b' ', b'-')):
7702
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
64 a[-1] = hline
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
65 hunk[-1] = hline
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
66
43075
57875cf423c9 style: run a patched black on a subset of mercurial
Augie Fackler <augie@google.com>
parents: 38783
diff changeset
67
7702
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
68 def testhunk(a, b, bstart):
37567
53021c4ef0b2 diffhelpers: port docstrings from cext to pure
Yuya Nishihara <yuya@tcha.org>
parents: 37566
diff changeset
69 """Compare the lines in a with the lines in b
53021c4ef0b2 diffhelpers: port docstrings from cext to pure
Yuya Nishihara <yuya@tcha.org>
parents: 37566
diff changeset
70
53021c4ef0b2 diffhelpers: port docstrings from cext to pure
Yuya Nishihara <yuya@tcha.org>
parents: 37566
diff changeset
71 a is assumed to have a control char at the start of each line, this char
53021c4ef0b2 diffhelpers: port docstrings from cext to pure
Yuya Nishihara <yuya@tcha.org>
parents: 37566
diff changeset
72 is ignored in the compare.
53021c4ef0b2 diffhelpers: port docstrings from cext to pure
Yuya Nishihara <yuya@tcha.org>
parents: 37566
diff changeset
73 """
7702
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
74 alen = len(a)
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
75 blen = len(b)
37802
090c89a8db32 diffhelpers: backport 9e40bc4c1bde from C implementation
Yuya Nishihara <yuya@tcha.org>
parents: 37575
diff changeset
76 if alen > blen - bstart or bstart < 0:
37574
a1bcc7ff0eac diffhelpers: make return value of testhunk() more Pythonic
Yuya Nishihara <yuya@tcha.org>
parents: 37573
diff changeset
77 return False
49284
d44e3c45f0e4 py3: replace `pycompat.xrange` by `range`
Manuel Jacob <me@manueljacob.de>
parents: 48875
diff changeset
78 for i in range(alen):
7702
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
parents:
diff changeset
79 if a[i][1:] != b[i + bstart]:
37574
a1bcc7ff0eac diffhelpers: make return value of testhunk() more Pythonic
Yuya Nishihara <yuya@tcha.org>
parents: 37573
diff changeset
80 return False
a1bcc7ff0eac diffhelpers: make return value of testhunk() more Pythonic
Yuya Nishihara <yuya@tcha.org>
parents: 37573
diff changeset
81 return True