Mercurial > hg
annotate mercurial/pure/diffhelpers.py @ 37566:f53b55b162f4
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> |
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date | Mon, 09 Apr 2018 20:44:41 +0900 |
parents | 80214358ac88 |
children | 53021c4ef0b2 |
rev | line source |
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7702
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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 |
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2 # |
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3 # Copyright 2009 Matt Mackall <mpm@selenic.com> and others |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
10263 | 6 # GNU General Public License version 2 or any later version. |
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7 |
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8 from __future__ import absolute_import |
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9 |
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10 def addlines(fp, hunk, lena, lenb, a, b): |
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11 while True: |
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12 todoa = lena - len(a) |
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13 todob = lenb - len(b) |
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14 num = max(todoa, todob) |
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15 if num == 0: |
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16 break |
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17 for i in xrange(num): |
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18 s = fp.readline() |
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19 if s == "\\ No newline at end of file\n": |
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20 fix_newline(hunk, a, b) |
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21 continue |
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py3: get rid of character access from pure.diffhelpers
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22 if s == "\n": |
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23 # Some patches may be missing the control char |
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24 # on empty lines. Supply a leading space. |
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25 s = " \n" |
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26 hunk.append(s) |
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27 if s.startswith('+'): |
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28 b.append(s[1:]) |
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29 elif s.startswith('-'): |
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30 a.append(s) |
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31 else: |
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32 b.append(s[1:]) |
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33 a.append(s) |
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34 return 0 |
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35 |
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36 def fix_newline(hunk, a, b): |
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37 l = hunk[-1] |
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38 # tolerate CRLF in last line |
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39 if l.endswith('\r\n'): |
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40 hline = l[:-2] |
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41 else: |
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42 hline = l[:-1] |
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43 |
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py3: get rid of character access from pure.diffhelpers
Yuya Nishihara <yuya@tcha.org>
parents:
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44 if hline.startswith((' ', '+')): |
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45 b[-1] = hline[1:] |
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Yuya Nishihara <yuya@tcha.org>
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46 if hline.startswith((' ', '-')): |
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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]: |
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59 return -1 |
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60 return 0 |