Mercurial > hg
annotate mercurial/help.py @ 23904:d251da5e0e84
transaction: include backup file in the "undo" transaction
Once the transaction is closed, we now write transaction related data for
possible future undo. For now, we only do it for full file "backup" because
their were not handle at all in that case. In the future, we could move all the
current logic to set undo up (that currently exists in localrepository) inside
transaction itself, but it is not strictly requires to solve the current
situation.
author | Pierre-Yves David <pierre-yves.david@fb.com> |
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date | Fri, 16 Jan 2015 18:34:14 -0800 |
parents | 861ddedfb402 |
children | a3f2ea1d4943 |
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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 |
10263 | 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 itertools, os |
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10 import error |
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11 import extensions, revset, fileset, templatekw, templatefilters, filemerge |
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12 import encoding, util, minirst |
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13 import cmdutil |
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14 |
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15 def listexts(header, exts, indent=1, showdeprecated=False): |
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16 '''return a text listing of the given extensions''' |
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17 rst = [] |
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18 if exts: |
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19 rst.append('\n%s\n\n' % header) |
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20 for name, desc in sorted(exts.iteritems()): |
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21 if '(DEPRECATED)' in desc and not showdeprecated: |
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22 continue |
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23 rst.append('%s:%s: %s\n' % (' ' * indent, name, desc)) |
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24 return rst |
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25 |
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26 def extshelp(): |
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27 rst = loaddoc('extensions')().splitlines(True) |
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28 rst.extend(listexts( |
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29 _('enabled extensions:'), extensions.enabled(), showdeprecated=True)) |
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30 rst.extend(listexts(_('disabled extensions:'), extensions.disabled())) |
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31 doc = ''.join(rst) |
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32 return doc |
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33 |
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34 def optrst(header, options, verbose): |
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35 data = [] |
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36 multioccur = False |
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37 for option in options: |
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38 if len(option) == 5: |
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39 shortopt, longopt, default, desc, optlabel = option |
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40 else: |
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41 shortopt, longopt, default, desc = option |
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42 optlabel = _("VALUE") # default label |
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43 |
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44 if not verbose and ("DEPRECATED" in desc or _("DEPRECATED") in desc): |
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45 continue |
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46 |
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47 so = '' |
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48 if shortopt: |
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49 so = '-' + shortopt |
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50 lo = '--' + longopt |
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51 if default: |
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52 desc += _(" (default: %s)") % default |
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53 |
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54 if isinstance(default, list): |
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55 lo += " %s [+]" % optlabel |
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56 multioccur = True |
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57 elif (default is not None) and not isinstance(default, bool): |
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58 lo += " %s" % optlabel |
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59 |
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60 data.append((so, lo, desc)) |
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61 |
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62 if multioccur: |
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63 header += (_(" ([+] can be repeated)")) |
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64 |
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65 rst = ['\n%s:\n\n' % header] |
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66 rst.extend(minirst.maketable(data, 1)) |
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67 |
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68 return ''.join(rst) |
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69 |
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70 def indicateomitted(rst, omitted, notomitted=None): |
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71 rst.append('\n\n.. container:: omitted\n\n %s\n\n' % omitted) |
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72 if notomitted: |
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73 rst.append('\n\n.. container:: notomitted\n\n %s\n\n' % notomitted) |
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74 |
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75 def topicmatch(kw): |
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76 """Return help topics matching kw. |
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77 |
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78 Returns {'section': [(name, summary), ...], ...} where section is |
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79 one of topics, commands, extensions, or extensioncommands. |
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80 """ |
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81 kw = encoding.lower(kw) |
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82 def lowercontains(container): |
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83 return kw in encoding.lower(container) # translated in helptable |
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84 results = {'topics': [], |
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85 'commands': [], |
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86 'extensions': [], |
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87 'extensioncommands': [], |
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88 } |
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89 for names, header, doc in helptable: |
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90 # Old extensions may use a str as doc. |
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91 if (sum(map(lowercontains, names)) |
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92 or lowercontains(header) |
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93 or (callable(doc) and lowercontains(doc()))): |
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94 results['topics'].append((names[0], header)) |
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95 import commands # avoid cycle |
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96 for cmd, entry in commands.table.iteritems(): |
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97 if len(entry) == 3: |
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98 summary = entry[2] |
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99 else: |
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100 summary = '' |
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101 # translate docs *before* searching there |
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102 docs = _(getattr(entry[0], '__doc__', None)) or '' |
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103 if kw in cmd or lowercontains(summary) or lowercontains(docs): |
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104 doclines = docs.splitlines() |
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105 if doclines: |
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106 summary = doclines[0] |
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107 cmdname = cmd.split('|')[0].lstrip('^') |
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108 results['commands'].append((cmdname, summary)) |
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109 for name, docs in itertools.chain( |
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110 extensions.enabled(False).iteritems(), |
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111 extensions.disabled().iteritems()): |
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112 # extensions.load ignores the UI argument |
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113 mod = extensions.load(None, name, '') |
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114 name = name.split('.')[-1] |
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115 if lowercontains(name) or lowercontains(docs): |
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116 # extension docs are already translated |
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117 results['extensions'].append((name, docs.splitlines()[0])) |
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118 for cmd, entry in getattr(mod, 'cmdtable', {}).iteritems(): |
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119 if kw in cmd or (len(entry) > 2 and lowercontains(entry[2])): |
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120 cmdname = cmd.split('|')[0].lstrip('^') |
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121 if entry[0].__doc__: |
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122 cmddoc = gettext(entry[0].__doc__).splitlines()[0] |
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123 else: |
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124 cmddoc = _('(no help text available)') |
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125 results['extensioncommands'].append((cmdname, cmddoc)) |
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126 return results |
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127 |
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128 def loaddoc(topic): |
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129 """Return a delayed loader for help/topic.txt.""" |
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131 def loader(): |
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132 docdir = os.path.join(util.datapath, 'help') |
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133 path = os.path.join(docdir, topic + ".txt") |
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134 doc = gettext(util.readfile(path)) |
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135 for rewriter in helphooks.get(topic, []): |
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136 doc = rewriter(topic, doc) |
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137 return doc |
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138 |
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139 return loader |
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140 |
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141 helptable = sorted([ |
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142 (["config", "hgrc"], _("Configuration Files"), loaddoc('config')), |
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143 (["dates"], _("Date Formats"), loaddoc('dates')), |
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144 (["patterns"], _("File Name Patterns"), loaddoc('patterns')), |
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145 (['environment', 'env'], _('Environment Variables'), |
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146 loaddoc('environment')), |
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147 (['revisions', 'revs'], _('Specifying Single Revisions'), |
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148 loaddoc('revisions')), |
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149 (['multirevs', 'mrevs'], _('Specifying Multiple Revisions'), |
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150 loaddoc('multirevs')), |
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151 (['revsets', 'revset'], _("Specifying Revision Sets"), loaddoc('revsets')), |
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152 (['filesets', 'fileset'], _("Specifying File Sets"), loaddoc('filesets')), |
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153 (['diffs'], _('Diff Formats'), loaddoc('diffs')), |
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154 (['merge-tools', 'mergetools'], _('Merge Tools'), loaddoc('merge-tools')), |
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155 (['templating', 'templates', 'template', 'style'], _('Template Usage'), |
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156 loaddoc('templates')), |
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157 (['urls'], _('URL Paths'), loaddoc('urls')), |
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158 (["extensions"], _("Using Additional Features"), extshelp), |
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159 (["subrepos", "subrepo"], _("Subrepositories"), loaddoc('subrepos')), |
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160 (["hgweb"], _("Configuring hgweb"), loaddoc('hgweb')), |
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161 (["glossary"], _("Glossary"), loaddoc('glossary')), |
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162 (["hgignore", "ignore"], _("Syntax for Mercurial Ignore Files"), |
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163 loaddoc('hgignore')), |
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164 (["phases"], _("Working with Phases"), loaddoc('phases')), |
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165 ]) |
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166 |
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167 # Map topics to lists of callable taking the current topic help and |
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168 # returning the updated version |
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169 helphooks = {} |
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170 |
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171 def addtopichook(topic, rewriter): |
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172 helphooks.setdefault(topic, []).append(rewriter) |
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173 |
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174 def makeitemsdoc(topic, doc, marker, items): |
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175 """Extract docstring from the items key to function mapping, build a |
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176 .single documentation block and use it to overwrite the marker in doc |
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177 """ |
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178 entries = [] |
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179 for name in sorted(items): |
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180 text = (items[name].__doc__ or '').rstrip() |
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181 if not text: |
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182 continue |
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183 text = gettext(text) |
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184 lines = text.splitlines() |
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185 doclines = [(lines[0])] |
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186 for l in lines[1:]: |
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187 # Stop once we find some Python doctest |
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188 if l.strip().startswith('>>>'): |
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189 break |
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190 doclines.append(' ' + l.strip()) |
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191 entries.append('\n'.join(doclines)) |
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192 entries = '\n\n'.join(entries) |
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193 return doc.replace(marker, entries) |
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194 |
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195 def addtopicsymbols(topic, marker, symbols): |
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196 def add(topic, doc): |
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197 return makeitemsdoc(topic, doc, marker, symbols) |
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198 addtopichook(topic, add) |
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199 |
14686 | 200 addtopicsymbols('filesets', '.. predicatesmarker', fileset.symbols) |
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201 addtopicsymbols('merge-tools', '.. internaltoolsmarker', filemerge.internals) |
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202 addtopicsymbols('revsets', '.. predicatesmarker', revset.symbols) |
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203 addtopicsymbols('templates', '.. keywordsmarker', templatekw.dockeywords) |
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204 addtopicsymbols('templates', '.. filtersmarker', templatefilters.filters) |
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205 |
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206 def help_(ui, name, unknowncmd=False, full=True, **opts): |
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207 ''' |
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208 Generate the help for 'name' as unformatted restructured text. If |
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209 'name' is None, describe the commands available. |
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210 ''' |
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211 |
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212 import commands # avoid cycle |
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213 |
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214 def helpcmd(name): |
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215 try: |
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216 aliases, entry = cmdutil.findcmd(name, commands.table, |
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217 strict=unknowncmd) |
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218 except error.AmbiguousCommand, inst: |
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219 # py3k fix: except vars can't be used outside the scope of the |
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220 # except block, nor can be used inside a lambda. python issue4617 |
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221 prefix = inst.args[0] |
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222 select = lambda c: c.lstrip('^').startswith(prefix) |
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223 rst = helplist(select) |
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224 return rst |
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225 |
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226 rst = [] |
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227 |
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228 # check if it's an invalid alias and display its error if it is |
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229 if getattr(entry[0], 'badalias', None): |
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230 rst.append(entry[0].badalias + '\n') |
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231 if entry[0].unknowncmd: |
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232 try: |
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233 rst.extend(helpextcmd(entry[0].cmdname)) |
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234 except error.UnknownCommand: |
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235 pass |
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236 return rst |
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237 |
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238 # synopsis |
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239 if len(entry) > 2: |
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240 if entry[2].startswith('hg'): |
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241 rst.append("%s\n" % entry[2]) |
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242 else: |
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243 rst.append('hg %s %s\n' % (aliases[0], entry[2])) |
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244 else: |
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245 rst.append('hg %s\n' % aliases[0]) |
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246 # aliases |
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247 if full and not ui.quiet and len(aliases) > 1: |
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248 rst.append(_("\naliases: %s\n") % ', '.join(aliases[1:])) |
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249 rst.append('\n') |
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250 |
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251 # description |
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252 doc = gettext(entry[0].__doc__) |
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253 if not doc: |
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254 doc = _("(no help text available)") |
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255 if util.safehasattr(entry[0], 'definition'): # aliased command |
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256 if entry[0].definition.startswith('!'): # shell alias |
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257 doc = _('shell alias for::\n\n %s') % entry[0].definition[1:] |
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258 else: |
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259 doc = _('alias for: hg %s\n\n%s') % (entry[0].definition, doc) |
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260 doc = doc.splitlines(True) |
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261 if ui.quiet or not full: |
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262 rst.append(doc[0]) |
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263 else: |
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264 rst.extend(doc) |
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265 rst.append('\n') |
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266 |
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267 # check if this command shadows a non-trivial (multi-line) |
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268 # extension help text |
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269 try: |
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270 mod = extensions.find(name) |
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271 doc = gettext(mod.__doc__) or '' |
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272 if '\n' in doc.strip(): |
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273 msg = _('(use "hg help -e %s" to show help for ' |
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274 'the %s extension)') % (name, name) |
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275 rst.append('\n%s\n' % msg) |
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276 except KeyError: |
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277 pass |
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278 |
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279 # options |
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280 if not ui.quiet and entry[1]: |
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281 rst.append(optrst(_("options"), entry[1], ui.verbose)) |
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282 |
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283 if ui.verbose: |
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284 rst.append(optrst(_("global options"), |
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285 commands.globalopts, ui.verbose)) |
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286 |
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287 if not ui.verbose: |
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288 if not full: |
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289 rst.append(_('\n(use "hg %s -h" to show more help)\n') |
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290 % name) |
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291 elif not ui.quiet: |
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292 rst.append(_('\n(some details hidden, use --verbose ' |
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293 'to show complete help)')) |
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294 |
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295 return rst |
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296 |
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297 |
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298 def helplist(select=None): |
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299 # list of commands |
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300 if name == "shortlist": |
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301 header = _('basic commands:\n\n') |
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302 elif name == "debug": |
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303 header = _('debug commands (internal and unsupported):\n\n') |
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304 else: |
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305 header = _('list of commands:\n\n') |
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306 |
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307 h = {} |
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308 cmds = {} |
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309 for c, e in commands.table.iteritems(): |
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310 f = c.split("|", 1)[0] |
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311 if select and not select(f): |
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312 continue |
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313 if (not select and name != 'shortlist' and |
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314 e[0].__module__ != commands.__name__): |
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315 continue |
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316 if name == "shortlist" and not f.startswith("^"): |
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317 continue |
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318 f = f.lstrip("^") |
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319 if not ui.debugflag and f.startswith("debug") and name != "debug": |
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320 continue |
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321 doc = e[0].__doc__ |
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322 if doc and 'DEPRECATED' in doc and not ui.verbose: |
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323 continue |
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324 doc = gettext(doc) |
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325 if not doc: |
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326 doc = _("(no help text available)") |
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327 h[f] = doc.splitlines()[0].rstrip() |
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328 cmds[f] = c.lstrip("^") |
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329 |
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330 rst = [] |
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331 if not h: |
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332 if not ui.quiet: |
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333 rst.append(_('no commands defined\n')) |
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334 return rst |
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335 |
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336 if not ui.quiet: |
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337 rst.append(header) |
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338 fns = sorted(h) |
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339 for f in fns: |
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340 if ui.verbose: |
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341 commacmds = cmds[f].replace("|",", ") |
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342 rst.append(" :%s: %s\n" % (commacmds, h[f])) |
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343 else: |
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344 rst.append(' :%s: %s\n' % (f, h[f])) |
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345 |
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346 if not name: |
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347 exts = listexts(_('enabled extensions:'), extensions.enabled()) |
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348 if exts: |
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349 rst.append('\n') |
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350 rst.extend(exts) |
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351 |
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352 rst.append(_("\nadditional help topics:\n\n")) |
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353 topics = [] |
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354 for names, header, doc in helptable: |
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355 topics.append((names[0], header)) |
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356 for t, desc in topics: |
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357 rst.append(" :%s: %s\n" % (t, desc)) |
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358 |
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359 if ui.quiet: |
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360 pass |
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361 elif ui.verbose: |
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362 rst.append('\n%s\n' % optrst(_("global options"), |
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363 commands.globalopts, ui.verbose)) |
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364 if name == 'shortlist': |
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365 rst.append(_('\n(use "hg help" for the full list ' |
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366 'of commands)\n')) |
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367 else: |
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368 if name == 'shortlist': |
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369 rst.append(_('\n(use "hg help" for the full list of commands ' |
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370 'or "hg -v" for details)\n')) |
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371 elif name and not full: |
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372 rst.append(_('\n(use "hg help %s" to show the full help ' |
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373 'text)\n') % name) |
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374 elif name and cmds and name in cmds.keys(): |
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375 rst.append(_('\n(use "hg help -v -e %s" to show built-in ' |
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376 'aliases and global options)\n') % name) |
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377 else: |
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378 rst.append(_('\n(use "hg help -v%s" to show built-in aliases ' |
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379 'and global options)\n') |
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380 % (name and " " + name or "")) |
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381 return rst |
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382 |
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383 def helptopic(name): |
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384 for names, header, doc in helptable: |
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385 if name in names: |
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386 break |
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387 else: |
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388 raise error.UnknownCommand(name) |
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389 |
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390 rst = [minirst.section(header)] |
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391 |
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392 # description |
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393 if not doc: |
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394 rst.append(" %s\n" % _("(no help text available)")) |
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395 if callable(doc): |
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396 rst += [" %s\n" % l for l in doc().splitlines()] |
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397 |
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398 if not ui.verbose: |
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399 omitted = _('(some details hidden, use --verbose' |
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400 ' to show complete help)') |
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401 indicateomitted(rst, omitted) |
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402 |
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403 try: |
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404 cmdutil.findcmd(name, commands.table) |
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405 rst.append(_('\nuse "hg help -c %s" to see help for ' |
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406 'the %s command\n') % (name, name)) |
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407 except error.UnknownCommand: |
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408 pass |
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409 return rst |
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410 |
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411 def helpext(name): |
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412 try: |
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413 mod = extensions.find(name) |
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414 doc = gettext(mod.__doc__) or _('no help text available') |
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415 except KeyError: |
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416 mod = None |
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417 doc = extensions.disabledext(name) |
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418 if not doc: |
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419 raise error.UnknownCommand(name) |
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420 |
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421 if '\n' not in doc: |
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422 head, tail = doc, "" |
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423 else: |
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424 head, tail = doc.split('\n', 1) |
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425 rst = [_('%s extension - %s\n\n') % (name.split('.')[-1], head)] |
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426 if tail: |
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427 rst.extend(tail.splitlines(True)) |
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428 rst.append('\n') |
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429 |
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430 if not ui.verbose: |
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431 omitted = _('(some details hidden, use --verbose' |
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432 ' to show complete help)') |
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433 indicateomitted(rst, omitted) |
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434 |
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435 if mod: |
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436 try: |
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437 ct = mod.cmdtable |
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438 except AttributeError: |
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439 ct = {} |
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440 modcmds = set([c.split('|', 1)[0] for c in ct]) |
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441 rst.extend(helplist(modcmds.__contains__)) |
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442 else: |
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443 rst.append(_('(use "hg help extensions" for information on enabling' |
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444 ' extensions)\n')) |
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445 return rst |
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446 |
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447 def helpextcmd(name): |
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448 cmd, ext, mod = extensions.disabledcmd(ui, name, |
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449 ui.configbool('ui', 'strict')) |
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450 doc = gettext(mod.__doc__).splitlines()[0] |
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451 |
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452 rst = listexts(_("'%s' is provided by the following " |
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453 "extension:") % cmd, {ext: doc}, indent=4) |
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454 rst.append('\n') |
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455 rst.append(_('(use "hg help extensions" for information on enabling ' |
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456 'extensions)\n')) |
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457 return rst |
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458 |
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459 |
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460 rst = [] |
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461 kw = opts.get('keyword') |
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462 if kw: |
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463 matches = topicmatch(kw) |
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464 for t, title in (('topics', _('Topics')), |
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465 ('commands', _('Commands')), |
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466 ('extensions', _('Extensions')), |
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467 ('extensioncommands', _('Extension Commands'))): |
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468 if matches[t]: |
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469 rst.append('%s:\n\n' % title) |
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470 rst.extend(minirst.maketable(sorted(matches[t]), 1)) |
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471 rst.append('\n') |
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472 if not rst: |
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473 msg = _('no matches') |
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474 hint = _('try "hg help" for a list of topics') |
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475 raise util.Abort(msg, hint=hint) |
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476 elif name and name != 'shortlist': |
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477 if unknowncmd: |
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478 queries = (helpextcmd,) |
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479 elif opts.get('extension'): |
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480 queries = (helpext,) |
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481 elif opts.get('command'): |
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482 queries = (helpcmd,) |
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483 else: |
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484 queries = (helptopic, helpcmd, helpext, helpextcmd) |
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485 for f in queries: |
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486 try: |
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487 rst = f(name) |
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488 break |
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489 except error.UnknownCommand: |
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490 pass |
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491 else: |
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492 if unknowncmd: |
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493 raise error.UnknownCommand(name) |
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494 else: |
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495 msg = _('no such help topic: %s') % name |
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496 hint = _('try "hg help --keyword %s"') % name |
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497 raise util.Abort(msg, hint=hint) |
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498 else: |
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499 # program name |
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500 if not ui.quiet: |
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501 rst = [_("Mercurial Distributed SCM\n"), '\n'] |
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502 rst.extend(helplist()) |
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503 |
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504 return ''.join(rst) |