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annotate mercurial/pure/diffhelpers.py @ 18426:01638b51df44

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hgweb: ignore filtered revision in revnav This changeset checks that a revision is known before adding it to the navigation. This will prevent traceback on filtered repository. This changeset result in an incorrect behaviors, Navigation link may be dropped without any replacement. However this bad navigation generation is much better than a crash
author Pierre-Yves David <pierre-yves.david@logilab.fr>
date Wed, 16 Jan 2013 14:19:28 +0100
parents 4f8067c94729
children 80214358ac88
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>
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1 # diffhelpers.py - pure Python implementation of diffhelpers.c
f6bb40554e34 pure Python implementation of diffhelpers.c
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2 #
f6bb40554e34 pure Python implementation of diffhelpers.c
Martin Geisler <mg@daimi.au.dk>
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3 # Copyright 2009 Matt Mackall <mpm@selenic.com> and others
f6bb40554e34 pure Python implementation of diffhelpers.c
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4 #
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46293a0c7e9f updated license to be explicit about GPL version 2
Martin Geisler <mg@lazybytes.net>
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5 # This software may be used and distributed according to the terms of the
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25e572394f5c Update license to GPLv2+
Matt Mackall <mpm@selenic.com>
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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 def addlines(fp, hunk, lena, lenb, a, b):
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9 while True:
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10 todoa = lena - len(a)
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11 todob = lenb - len(b)
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12 num = max(todoa, todob)
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13 if num == 0:
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14 break
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15 for i in xrange(num):
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16 s = fp.readline()
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17 c = s[0]
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18 if s == "\\ No newline at end of file\n":
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19 fix_newline(hunk, a, b)
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20 continue
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21 if c == "\n":
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22 # Some patches may be missing the control char
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23 # on empty lines. Supply a leading space.
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24 s = " \n"
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25 hunk.append(s)
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26 if c == "+":
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27 b.append(s[1:])
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28 elif c == "-":
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29 a.append(s)
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30 else:
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31 b.append(s[1:])
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32 a.append(s)
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33 return 0
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34
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35 def fix_newline(hunk, a, b):
f6bb40554e34 pure Python implementation of diffhelpers.c
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36 l = hunk[-1]
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Benoit Boissinot <benoit.boissinot@ens-lyon.org>
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37 # tolerate CRLF in last line
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38 if l.endswith('\r\n'):
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39 hline = l[:-2]
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40 else:
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41 hline = l[:-1]
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42 c = hline[0]
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43
12387
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44 if c in " +":
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45 b[-1] = hline[1:]
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46 if c in " -":
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47 a[-1] = hline
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48 hunk[-1] = hline
f6bb40554e34 pure Python implementation of diffhelpers.c
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49 return 0
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50
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51
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52 def testhunk(a, b, bstart):
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53 alen = len(a)
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54 blen = len(b)
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55 if alen > blen - bstart:
f6bb40554e34 pure Python implementation of diffhelpers.c
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56 return -1
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57 for i in xrange(alen):
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58 if a[i][1:] != b[i + bstart]:
f6bb40554e34 pure Python implementation of diffhelpers.c
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59 return -1
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60 return 0