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annotate mercurial/pure/diffhelpers.py @ 13741:b51bf961b3cb

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wireproto: add getbundle() function getbundle(common, heads) -> bundle Returns the changegroup for all ancestors of heads which are not ancestors of common. For both sets, the heads are included in the set. Intended to eventually supercede changegroupsubset and changegroup. Uses heads of common region to exclude unwanted changesets instead of bases of desired region, which is more useful and easier to implement. Designed to be extensible with new optional arguments (which will have to be guarded by corresponding capabilities).
author Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
date Wed, 23 Mar 2011 16:02:11 +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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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):
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36 l = hunk[-1]
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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
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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
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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:
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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