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annotate hgext/interhg.py @ 8909:7bed4ad7b58f

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interhg: remove unnecessary escaping
author Martin Geisler <mg@lazybytes.net>
date Fri, 19 Jun 2009 10:24:34 +0200
parents 67ee7587abea
children 0c610f77ae1a
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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0ac6b537893f interhg extension allows you to change changelog text like InterWiki.
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1 # interhg.py - interhg
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2 #
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3 # Copyright 2007 OHASHI Hideya <ohachige@gmail.com>
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4 #
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5 # Contributor(s):
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6 # Edward Lee <edward.lee@engineering.uiuc.edu>
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7 #
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8 # This software may be used and distributed according to the terms of the
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9 # GNU General Public License version 2, incorporated herein by reference.
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10
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11 '''expand expressions into changelog and summaries
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12
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13 This extension allows the use of a special syntax in summaries,
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14 which will be automatically expanded into links or any other
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15 arbitrary expression, much like InterWiki does.
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16
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17 To enable this extension, add the following lines to your hgrc:
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18
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19 [extensions]
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20 interhg =
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21
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22 A few example patterns (link to bug tracking, etc.):
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23
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24 [interhg]
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25 issues = s!issue(\d+)!<a href="http://bts/issue\1">issue\1</a>!
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26 bugzilla = s!((?:bug|b=|(?=#?\d{4,}))(?:\s*#?)(\d+))!<a..=\2">\1</a>!i
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27 boldify = s!(^|\s)#(\d+)\b! <b>#\2</b>!
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28 '''
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29
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30 import re
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31 from mercurial.hgweb import hgweb_mod
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32 from mercurial import templatefilters, extensions
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33 from mercurial.i18n import _
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34
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35 orig_escape = templatefilters.filters["escape"]
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36
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37 interhg_table = []
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38
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39 def interhg_escape(x):
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40 escstr = orig_escape(x)
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41 for regexp, format in interhg_table:
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42 escstr = regexp.sub(format, escstr)
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43 return escstr
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44
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45 templatefilters.filters["escape"] = interhg_escape
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46
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47 def interhg_refresh(orig, self):
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48 interhg_table[:] = []
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49 for key, pattern in self.repo.ui.configitems('interhg'):
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50 # grab the delimiter from the character after the "s"
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51 unesc = pattern[1]
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52 delim = re.escape(unesc)
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53
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54 # identify portions of the pattern, taking care to avoid escaped
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55 # delimiters. the replace format and flags are optional, but delimiters
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56 # are required.
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57 match = re.match(r'^s%s(.+)(?:(?<=\\\\)|(?<!\\))%s(.*)%s([ilmsux])*$'
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58 % (delim, delim, delim), pattern)
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59 if not match:
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60 self.repo.ui.warn(_("interhg: invalid pattern for %s: %s\n")
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61 % (key, pattern))
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62 continue
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63
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64 # we need to unescape the delimiter for regexp and format
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65 delim_re = re.compile(r'(?<!\\)\\%s' % delim)
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66 regexp = delim_re.sub(unesc, match.group(1))
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67 format = delim_re.sub(unesc, match.group(2))
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68
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69 # the pattern allows for 6 regexp flags, so set them if necessary
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70 flagin = match.group(3)
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71 flags = 0
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72 if flagin:
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73 for flag in flagin.upper():
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74 flags |= re.__dict__[flag]
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75
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76 try:
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77 regexp = re.compile(regexp, flags)
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78 interhg_table.append((regexp, format))
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79 except re.error:
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80 self.repo.ui.warn(_("interhg: invalid regexp for %s: %s\n")
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81 % (key, regexp))
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82 return orig(self)
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83
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84 extensions.wrapfunction(hgweb_mod.hgweb, 'refresh', interhg_refresh)