annotate mercurial/help.py @ 12583:903828be7397

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author Mads Kiilerich <mads@kiilerich.com>
date Wed, 29 Sep 2010 01:32:50 +0200
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children c77f6276c9e7
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1 # help.py - help data for mercurial
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2 #
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3 # Copyright 2006 Matt Mackall <mpm@selenic.com>
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4 #
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5 # This software may be used and distributed according to the terms of the
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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 from i18n import gettext, _
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9 import sys, os
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10 import extensions
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11
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12
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13 def moduledoc(file):
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14 '''return the top-level python documentation for the given file
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15
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16 Loosely inspired by pydoc.source_synopsis(), but rewritten to
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17 handle triple quotes and to return the whole text instead of just
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18 the synopsis'''
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19 result = []
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20
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21 line = file.readline()
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22 while line[:1] == '#' or not line.strip():
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23 line = file.readline()
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24 if not line:
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25 break
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26
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27 start = line[:3]
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28 if start == '"""' or start == "'''":
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29 line = line[3:]
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30 while line:
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31 if line.rstrip().endswith(start):
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32 line = line.split(start)[0]
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33 if line:
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34 result.append(line)
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35 break
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36 elif not line:
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37 return None # unmatched delimiter
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38 result.append(line)
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39 line = file.readline()
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40 else:
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41 return None
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42
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43 return ''.join(result)
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44
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45 def listexts(header, exts, maxlength, indent=1):
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46 '''return a text listing of the given extensions'''
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47 if not exts:
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48 return ''
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49 result = '\n%s\n\n' % header
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50 for name, desc in sorted(exts.iteritems()):
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51 result += '%s%-*s %s\n' % (' ' * indent, maxlength + 2,
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52 ':%s:' % name, desc)
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53 return result
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54
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55 def extshelp():
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56 doc = loaddoc('extensions')()
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57
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58 exts, maxlength = extensions.enabled()
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59 doc += listexts(_('enabled extensions:'), exts, maxlength)
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60
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61 exts, maxlength = extensions.disabled()
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62 doc += listexts(_('disabled extensions:'), exts, maxlength)
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64 return doc
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65
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66 def loaddoc(topic):
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67 """Return a delayed loader for help/topic.txt."""
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68
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69 def loader():
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70 if hasattr(sys, 'frozen'):
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71 module = sys.executable
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72 else:
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73 module = __file__
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74 base = os.path.dirname(module)
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75
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76 for dir in ('.', '..'):
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77 docdir = os.path.join(base, dir, 'help')
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78 if os.path.isdir(docdir):
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79 break
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80
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81 path = os.path.join(docdir, topic + ".txt")
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82 return gettext(open(path).read())
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83 return loader
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84
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85 helptable = [
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86 (["config", "hgrc"], _("Configuration Files"), loaddoc('config')),
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87 (["dates"], _("Date Formats"), loaddoc('dates')),
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88 (["patterns"], _("File Name Patterns"), loaddoc('patterns')),
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89 (['environment', 'env'], _('Environment Variables'),
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90 loaddoc('environment')),
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91 (['revs', 'revisions'], _('Specifying Single Revisions'),
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92 loaddoc('revisions')),
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93 (['mrevs', 'multirevs'], _('Specifying Multiple Revisions'),
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94 loaddoc('multirevs')),
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95 (['revsets'], _("Specifying Revision Sets"), loaddoc('revsets')),
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96 (['diffs'], _('Diff Formats'), loaddoc('diffs')),
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97 (['templating', 'templates'], _('Template Usage'),
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98 loaddoc('templates')),
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99 (['urls'], _('URL Paths'), loaddoc('urls')),
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100 (["extensions"], _("Using additional features"), extshelp),
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101 (["hgweb"], _("Configuring hgweb"), loaddoc('hgweb')),
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102 (["glossary"], _("Glossary"), loaddoc('glossary')),
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103 ]