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merge: use constants for merge state record types...
merge: use constants for merge state record types merge.py is using multiple discrete sets of 1 and 2 letter constants to define types and behavior. To the uninitiated, the code is very difficult to reason about. I didn't even realize there were multiple sets of constants in play initially! We begin our sanity injection with merge state records. The record types (which are serialized to disk) are now defined in RECORD_* constants. Differential Revision: https://phab.mercurial-scm.org/D2698

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diffhelpers.py
62 lines | 1.6 KiB | text/x-python | PythonLexer
Martin Geisler
pure Python implementation of diffhelpers.c
r7702 # diffhelpers.py - pure Python implementation of diffhelpers.c
#
# Copyright 2009 Matt Mackall <mpm@selenic.com> and others
#
Martin Geisler
updated license to be explicit about GPL version 2
r8225 # This software may be used and distributed according to the terms of the
Matt Mackall
Update license to GPLv2+
r10263 # GNU General Public License version 2 or any later version.
Martin Geisler
pure Python implementation of diffhelpers.c
r7702
Gregory Szorc
diffhelpers: use absolute_import
r27336 from __future__ import absolute_import
Martin Geisler
pure Python implementation of diffhelpers.c
r7702 def addlines(fp, hunk, lena, lenb, a, b):
while True:
todoa = lena - len(a)
todob = lenb - len(b)
num = max(todoa, todob)
if num == 0:
break
for i in xrange(num):
s = fp.readline()
c = s[0]
if s == "\\ No newline at end of file\n":
fix_newline(hunk, a, b)
continue
if c == "\n":
# Some patches may be missing the control char
# on empty lines. Supply a leading space.
s = " \n"
hunk.append(s)
if c == "+":
b.append(s[1:])
elif c == "-":
a.append(s)
else:
b.append(s[1:])
a.append(s)
return 0
def fix_newline(hunk, a, b):
l = hunk[-1]
Benoit Boissinot
fix test-mq-eol under --pure (mimic diffhelper.c behaviour)...
r10551 # tolerate CRLF in last line
if l.endswith('\r\n'):
hline = l[:-2]
else:
hline = l[:-1]
c = hline[0]
Martin Geisler
pure Python implementation of diffhelpers.c
r7702
Brodie Rao
cleanup: use x in (a, b) instead of x == a or x == b
r12387 if c in " +":
Benoit Boissinot
fix test-mq-eol under --pure (mimic diffhelper.c behaviour)...
r10551 b[-1] = hline[1:]
Brodie Rao
cleanup: use x in (a, b) instead of x == a or x == b
r12387 if c in " -":
Martin Geisler
pure Python implementation of diffhelpers.c
r7702 a[-1] = hline
hunk[-1] = hline
return 0
def testhunk(a, b, bstart):
alen = len(a)
blen = len(b)
if alen > blen - bstart:
return -1
for i in xrange(alen):
if a[i][1:] != b[i + bstart]:
return -1
return 0