Mercurial > hg
annotate mercurial/help.py @ 26061:be8a4e0800d8
reachableroots: use baseset lazy sorting
smartset sorting is lazy (so faster in some case) and better (informs that the
set is sorted allowing some optimisation). So we rely on it directly.
Some test output are updated because we now have more information (ordering).
author | Pierre-Yves David <pierre-yves.david@fb.com> |
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date | Thu, 20 Aug 2015 17:23:21 -0700 |
parents | 9de443515f1d |
children | 3a4620ad4490 |
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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, textwrap |
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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 templater |
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13 import encoding, util, minirst |
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14 import cmdutil |
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15 import hgweb.webcommands as webcommands |
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16 |
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17 def listexts(header, exts, indent=1, showdeprecated=False): |
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18 '''return a text listing of the given extensions''' |
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19 rst = [] |
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20 if exts: |
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21 rst.append('\n%s\n\n' % header) |
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22 for name, desc in sorted(exts.iteritems()): |
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23 if '(DEPRECATED)' in desc and not showdeprecated: |
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24 continue |
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25 rst.append('%s:%s: %s\n' % (' ' * indent, name, desc)) |
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26 return rst |
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27 |
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28 def extshelp(): |
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29 rst = loaddoc('extensions')().splitlines(True) |
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30 rst.extend(listexts( |
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31 _('enabled extensions:'), extensions.enabled(), showdeprecated=True)) |
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32 rst.extend(listexts(_('disabled extensions:'), extensions.disabled())) |
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33 doc = ''.join(rst) |
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34 return doc |
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35 |
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36 def optrst(header, options, verbose): |
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37 data = [] |
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38 multioccur = False |
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39 for option in options: |
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40 if len(option) == 5: |
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41 shortopt, longopt, default, desc, optlabel = option |
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42 else: |
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43 shortopt, longopt, default, desc = option |
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44 optlabel = _("VALUE") # default label |
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45 |
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46 if not verbose and ("DEPRECATED" in desc or _("DEPRECATED") in desc or |
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47 "EXPERIMENTAL" in desc or |
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48 _("EXPERIMENTAL") in desc): |
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49 continue |
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50 |
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51 so = '' |
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52 if shortopt: |
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53 so = '-' + shortopt |
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54 lo = '--' + longopt |
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55 if default: |
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56 desc += _(" (default: %s)") % default |
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57 |
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58 if isinstance(default, list): |
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59 lo += " %s [+]" % optlabel |
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60 multioccur = True |
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61 elif (default is not None) and not isinstance(default, bool): |
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62 lo += " %s" % optlabel |
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63 |
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64 data.append((so, lo, desc)) |
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65 |
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66 if multioccur: |
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67 header += (_(" ([+] can be repeated)")) |
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68 |
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69 rst = ['\n%s:\n\n' % header] |
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70 rst.extend(minirst.maketable(data, 1)) |
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71 |
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72 return ''.join(rst) |
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73 |
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74 def indicateomitted(rst, omitted, notomitted=None): |
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75 rst.append('\n\n.. container:: omitted\n\n %s\n\n' % omitted) |
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76 if notomitted: |
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77 rst.append('\n\n.. container:: notomitted\n\n %s\n\n' % notomitted) |
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78 |
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79 def topicmatch(kw): |
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80 """Return help topics matching kw. |
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81 |
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82 Returns {'section': [(name, summary), ...], ...} where section is |
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83 one of topics, commands, extensions, or extensioncommands. |
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84 """ |
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85 kw = encoding.lower(kw) |
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86 def lowercontains(container): |
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87 return kw in encoding.lower(container) # translated in helptable |
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88 results = {'topics': [], |
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89 'commands': [], |
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90 'extensions': [], |
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91 'extensioncommands': [], |
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92 } |
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93 for names, header, doc in helptable: |
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94 # Old extensions may use a str as doc. |
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95 if (sum(map(lowercontains, names)) |
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96 or lowercontains(header) |
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97 or (callable(doc) and lowercontains(doc()))): |
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98 results['topics'].append((names[0], header)) |
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99 import commands # avoid cycle |
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100 for cmd, entry in commands.table.iteritems(): |
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101 if len(entry) == 3: |
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102 summary = entry[2] |
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103 else: |
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104 summary = '' |
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105 # translate docs *before* searching there |
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106 docs = _(getattr(entry[0], '__doc__', None)) or '' |
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107 if kw in cmd or lowercontains(summary) or lowercontains(docs): |
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108 doclines = docs.splitlines() |
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109 if doclines: |
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110 summary = doclines[0] |
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111 cmdname = cmd.split('|')[0].lstrip('^') |
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112 results['commands'].append((cmdname, summary)) |
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113 for name, docs in itertools.chain( |
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114 extensions.enabled(False).iteritems(), |
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115 extensions.disabled().iteritems()): |
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116 # extensions.load ignores the UI argument |
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117 mod = extensions.load(None, name, '') |
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118 name = name.split('.')[-1] |
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119 if lowercontains(name) or lowercontains(docs): |
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120 # extension docs are already translated |
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121 results['extensions'].append((name, docs.splitlines()[0])) |
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122 for cmd, entry in getattr(mod, 'cmdtable', {}).iteritems(): |
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123 if kw in cmd or (len(entry) > 2 and lowercontains(entry[2])): |
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124 cmdname = cmd.split('|')[0].lstrip('^') |
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125 if entry[0].__doc__: |
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126 cmddoc = gettext(entry[0].__doc__).splitlines()[0] |
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127 else: |
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128 cmddoc = _('(no help text available)') |
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129 results['extensioncommands'].append((cmdname, cmddoc)) |
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130 return results |
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131 |
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132 def loaddoc(topic): |
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133 """Return a delayed loader for help/topic.txt.""" |
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135 def loader(): |
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136 docdir = os.path.join(util.datapath, 'help') |
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137 path = os.path.join(docdir, topic + ".txt") |
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138 doc = gettext(util.readfile(path)) |
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139 for rewriter in helphooks.get(topic, []): |
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140 doc = rewriter(topic, doc) |
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141 return doc |
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142 |
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143 return loader |
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144 |
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145 helptable = sorted([ |
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146 (["config", "hgrc"], _("Configuration Files"), loaddoc('config')), |
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147 (["dates"], _("Date Formats"), loaddoc('dates')), |
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148 (["patterns"], _("File Name Patterns"), loaddoc('patterns')), |
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149 (['environment', 'env'], _('Environment Variables'), |
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150 loaddoc('environment')), |
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151 (['revisions', 'revs'], _('Specifying Single Revisions'), |
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152 loaddoc('revisions')), |
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153 (['multirevs', 'mrevs'], _('Specifying Multiple Revisions'), |
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154 loaddoc('multirevs')), |
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155 (['revsets', 'revset'], _("Specifying Revision Sets"), loaddoc('revsets')), |
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156 (['filesets', 'fileset'], _("Specifying File Sets"), loaddoc('filesets')), |
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157 (['diffs'], _('Diff Formats'), loaddoc('diffs')), |
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158 (['merge-tools', 'mergetools'], _('Merge Tools'), loaddoc('merge-tools')), |
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159 (['templating', 'templates', 'template', 'style'], _('Template Usage'), |
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160 loaddoc('templates')), |
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161 (['urls'], _('URL Paths'), loaddoc('urls')), |
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162 (["extensions"], _("Using Additional Features"), extshelp), |
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163 (["subrepos", "subrepo"], _("Subrepositories"), loaddoc('subrepos')), |
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164 (["hgweb"], _("Configuring hgweb"), loaddoc('hgweb')), |
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165 (["glossary"], _("Glossary"), loaddoc('glossary')), |
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166 (["hgignore", "ignore"], _("Syntax for Mercurial Ignore Files"), |
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167 loaddoc('hgignore')), |
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168 (["phases"], _("Working with Phases"), loaddoc('phases')), |
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169 (['scripting'], _('Using Mercurial from scripts and automation'), |
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170 loaddoc('scripting')), |
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171 ]) |
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172 |
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173 # Map topics to lists of callable taking the current topic help and |
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174 # returning the updated version |
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175 helphooks = {} |
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176 |
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177 def addtopichook(topic, rewriter): |
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178 helphooks.setdefault(topic, []).append(rewriter) |
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179 |
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180 def makeitemsdoc(topic, doc, marker, items, dedent=False): |
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181 """Extract docstring from the items key to function mapping, build a |
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182 .single documentation block and use it to overwrite the marker in doc |
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183 """ |
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184 entries = [] |
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185 for name in sorted(items): |
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186 text = (items[name].__doc__ or '').rstrip() |
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187 if not text: |
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188 continue |
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189 text = gettext(text) |
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190 if dedent: |
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191 text = textwrap.dedent(text) |
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192 lines = text.splitlines() |
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193 doclines = [(lines[0])] |
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194 for l in lines[1:]: |
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195 # Stop once we find some Python doctest |
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196 if l.strip().startswith('>>>'): |
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197 break |
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198 if dedent: |
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199 doclines.append(l.rstrip()) |
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200 else: |
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201 doclines.append(' ' + l.strip()) |
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202 entries.append('\n'.join(doclines)) |
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203 entries = '\n\n'.join(entries) |
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204 return doc.replace(marker, entries) |
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205 |
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206 def addtopicsymbols(topic, marker, symbols, dedent=False): |
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207 def add(topic, doc): |
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208 return makeitemsdoc(topic, doc, marker, symbols, dedent=dedent) |
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209 addtopichook(topic, add) |
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210 |
14686 | 211 addtopicsymbols('filesets', '.. predicatesmarker', fileset.symbols) |
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212 addtopicsymbols('merge-tools', '.. internaltoolsmarker', |
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213 filemerge.internalsdoc) |
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214 addtopicsymbols('revsets', '.. predicatesmarker', revset.symbols) |
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215 addtopicsymbols('templates', '.. keywordsmarker', templatekw.dockeywords) |
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216 addtopicsymbols('templates', '.. filtersmarker', templatefilters.filters) |
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217 addtopicsymbols('templates', '.. functionsmarker', templater.funcs) |
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218 addtopicsymbols('hgweb', '.. webcommandsmarker', webcommands.commands, |
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219 dedent=True) |
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220 |
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221 def help_(ui, name, unknowncmd=False, full=True, **opts): |
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222 ''' |
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223 Generate the help for 'name' as unformatted restructured text. If |
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224 'name' is None, describe the commands available. |
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225 ''' |
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226 |
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227 import commands # avoid cycle |
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228 |
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229 def helpcmd(name): |
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230 try: |
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231 aliases, entry = cmdutil.findcmd(name, commands.table, |
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232 strict=unknowncmd) |
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233 except error.AmbiguousCommand as inst: |
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234 # py3k fix: except vars can't be used outside the scope of the |
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235 # except block, nor can be used inside a lambda. python issue4617 |
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236 prefix = inst.args[0] |
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237 select = lambda c: c.lstrip('^').startswith(prefix) |
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238 rst = helplist(select) |
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239 return rst |
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240 |
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241 rst = [] |
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242 |
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243 # check if it's an invalid alias and display its error if it is |
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244 if getattr(entry[0], 'badalias', None): |
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245 rst.append(entry[0].badalias + '\n') |
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246 if entry[0].unknowncmd: |
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247 try: |
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248 rst.extend(helpextcmd(entry[0].cmdname)) |
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249 except error.UnknownCommand: |
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250 pass |
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251 return rst |
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252 |
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253 # synopsis |
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254 if len(entry) > 2: |
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255 if entry[2].startswith('hg'): |
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256 rst.append("%s\n" % entry[2]) |
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257 else: |
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258 rst.append('hg %s %s\n' % (aliases[0], entry[2])) |
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259 else: |
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260 rst.append('hg %s\n' % aliases[0]) |
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261 # aliases |
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262 if full and not ui.quiet and len(aliases) > 1: |
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263 rst.append(_("\naliases: %s\n") % ', '.join(aliases[1:])) |
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264 rst.append('\n') |
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265 |
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266 # description |
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267 doc = gettext(entry[0].__doc__) |
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268 if not doc: |
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269 doc = _("(no help text available)") |
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270 if util.safehasattr(entry[0], 'definition'): # aliased command |
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271 if entry[0].definition.startswith('!'): # shell alias |
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272 doc = _('shell alias for::\n\n %s') % entry[0].definition[1:] |
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273 else: |
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274 doc = _('alias for: hg %s\n\n%s') % (entry[0].definition, doc) |
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275 doc = doc.splitlines(True) |
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276 if ui.quiet or not full: |
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277 rst.append(doc[0]) |
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278 else: |
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279 rst.extend(doc) |
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280 rst.append('\n') |
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281 |
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282 # check if this command shadows a non-trivial (multi-line) |
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283 # extension help text |
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284 try: |
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285 mod = extensions.find(name) |
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286 doc = gettext(mod.__doc__) or '' |
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287 if '\n' in doc.strip(): |
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288 msg = _('(use "hg help -e %s" to show help for ' |
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289 'the %s extension)') % (name, name) |
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290 rst.append('\n%s\n' % msg) |
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291 except KeyError: |
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292 pass |
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293 |
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294 # options |
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295 if not ui.quiet and entry[1]: |
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296 rst.append(optrst(_("options"), entry[1], ui.verbose)) |
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297 |
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298 if ui.verbose: |
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299 rst.append(optrst(_("global options"), |
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300 commands.globalopts, ui.verbose)) |
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301 |
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302 if not ui.verbose: |
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303 if not full: |
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304 rst.append(_('\n(use "hg %s -h" to show more help)\n') |
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305 % name) |
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306 elif not ui.quiet: |
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307 rst.append(_('\n(some details hidden, use --verbose ' |
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308 'to show complete help)')) |
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309 |
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310 return rst |
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311 |
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312 |
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313 def helplist(select=None): |
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314 # list of commands |
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315 if name == "shortlist": |
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316 header = _('basic commands:\n\n') |
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317 elif name == "debug": |
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318 header = _('debug commands (internal and unsupported):\n\n') |
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319 else: |
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320 header = _('list of commands:\n\n') |
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321 |
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322 h = {} |
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323 cmds = {} |
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324 for c, e in commands.table.iteritems(): |
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325 f = c.split("|", 1)[0] |
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326 if select and not select(f): |
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327 continue |
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328 if (not select and name != 'shortlist' and |
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329 e[0].__module__ != commands.__name__): |
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330 continue |
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331 if name == "shortlist" and not f.startswith("^"): |
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332 continue |
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333 f = f.lstrip("^") |
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334 if not ui.debugflag and f.startswith("debug") and name != "debug": |
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335 continue |
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336 doc = e[0].__doc__ |
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337 if doc and 'DEPRECATED' in doc and not ui.verbose: |
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338 continue |
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339 doc = gettext(doc) |
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340 if not doc: |
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341 doc = _("(no help text available)") |
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342 h[f] = doc.splitlines()[0].rstrip() |
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343 cmds[f] = c.lstrip("^") |
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344 |
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345 rst = [] |
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346 if not h: |
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347 if not ui.quiet: |
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348 rst.append(_('no commands defined\n')) |
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349 return rst |
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350 |
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351 if not ui.quiet: |
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352 rst.append(header) |
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353 fns = sorted(h) |
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354 for f in fns: |
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355 if ui.verbose: |
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356 commacmds = cmds[f].replace("|",", ") |
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357 rst.append(" :%s: %s\n" % (commacmds, h[f])) |
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358 else: |
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359 rst.append(' :%s: %s\n' % (f, h[f])) |
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360 |
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361 if not name: |
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362 exts = listexts(_('enabled extensions:'), extensions.enabled()) |
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363 if exts: |
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364 rst.append('\n') |
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365 rst.extend(exts) |
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366 |
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367 rst.append(_("\nadditional help topics:\n\n")) |
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368 topics = [] |
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369 for names, header, doc in helptable: |
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370 topics.append((names[0], header)) |
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371 for t, desc in topics: |
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372 rst.append(" :%s: %s\n" % (t, desc)) |
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373 |
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374 if ui.quiet: |
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375 pass |
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376 elif ui.verbose: |
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377 rst.append('\n%s\n' % optrst(_("global options"), |
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378 commands.globalopts, ui.verbose)) |
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379 if name == 'shortlist': |
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380 rst.append(_('\n(use "hg help" for the full list ' |
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381 'of commands)\n')) |
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382 else: |
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383 if name == 'shortlist': |
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384 rst.append(_('\n(use "hg help" for the full list of commands ' |
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385 'or "hg -v" for details)\n')) |
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386 elif name and not full: |
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387 rst.append(_('\n(use "hg help %s" to show the full help ' |
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388 'text)\n') % name) |
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389 elif name and cmds and name in cmds.keys(): |
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390 rst.append(_('\n(use "hg help -v -e %s" to show built-in ' |
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391 'aliases and global options)\n') % name) |
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392 else: |
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393 rst.append(_('\n(use "hg help -v%s" to show built-in aliases ' |
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394 'and global options)\n') |
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395 % (name and " " + name or "")) |
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396 return rst |
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397 |
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398 def helptopic(name): |
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399 for names, header, doc in helptable: |
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400 if name in names: |
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401 break |
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402 else: |
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403 raise error.UnknownCommand(name) |
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404 |
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405 rst = [minirst.section(header)] |
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406 |
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407 # description |
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408 if not doc: |
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409 rst.append(" %s\n" % _("(no help text available)")) |
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410 if callable(doc): |
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411 rst += [" %s\n" % l for l in doc().splitlines()] |
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412 |
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413 if not ui.verbose: |
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414 omitted = _('(some details hidden, use --verbose' |
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415 ' to show complete help)') |
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416 indicateomitted(rst, omitted) |
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417 |
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418 try: |
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419 cmdutil.findcmd(name, commands.table) |
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420 rst.append(_('\nuse "hg help -c %s" to see help for ' |
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421 'the %s command\n') % (name, name)) |
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422 except error.UnknownCommand: |
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423 pass |
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424 return rst |
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425 |
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426 def helpext(name): |
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427 try: |
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428 mod = extensions.find(name) |
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429 doc = gettext(mod.__doc__) or _('no help text available') |
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430 except KeyError: |
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431 mod = None |
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432 doc = extensions.disabledext(name) |
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433 if not doc: |
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434 raise error.UnknownCommand(name) |
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435 |
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436 if '\n' not in doc: |
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437 head, tail = doc, "" |
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438 else: |
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439 head, tail = doc.split('\n', 1) |
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440 rst = [_('%s extension - %s\n\n') % (name.split('.')[-1], head)] |
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441 if tail: |
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442 rst.extend(tail.splitlines(True)) |
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443 rst.append('\n') |
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444 |
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445 if not ui.verbose: |
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446 omitted = _('(some details hidden, use --verbose' |
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447 ' to show complete help)') |
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448 indicateomitted(rst, omitted) |
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449 |
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450 if mod: |
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451 try: |
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452 ct = mod.cmdtable |
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453 except AttributeError: |
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454 ct = {} |
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455 modcmds = set([c.split('|', 1)[0] for c in ct]) |
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456 rst.extend(helplist(modcmds.__contains__)) |
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457 else: |
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458 rst.append(_('(use "hg help extensions" for information on enabling' |
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459 ' extensions)\n')) |
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460 return rst |
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461 |
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462 def helpextcmd(name): |
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463 cmd, ext, mod = extensions.disabledcmd(ui, name, |
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464 ui.configbool('ui', 'strict')) |
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465 doc = gettext(mod.__doc__).splitlines()[0] |
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466 |
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467 rst = listexts(_("'%s' is provided by the following " |
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468 "extension:") % cmd, {ext: doc}, indent=4) |
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469 rst.append('\n') |
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470 rst.append(_('(use "hg help extensions" for information on enabling ' |
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471 'extensions)\n')) |
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472 return rst |
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473 |
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474 |
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475 rst = [] |
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476 kw = opts.get('keyword') |
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477 if kw: |
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478 matches = topicmatch(kw) |
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479 for t, title in (('topics', _('Topics')), |
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480 ('commands', _('Commands')), |
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481 ('extensions', _('Extensions')), |
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482 ('extensioncommands', _('Extension Commands'))): |
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483 if matches[t]: |
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484 rst.append('%s:\n\n' % title) |
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485 rst.extend(minirst.maketable(sorted(matches[t]), 1)) |
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486 rst.append('\n') |
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487 if not rst: |
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488 msg = _('no matches') |
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489 hint = _('try "hg help" for a list of topics') |
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490 raise util.Abort(msg, hint=hint) |
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491 elif name and name != 'shortlist': |
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492 if unknowncmd: |
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493 queries = (helpextcmd,) |
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494 elif opts.get('extension'): |
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495 queries = (helpext,) |
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496 elif opts.get('command'): |
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497 queries = (helpcmd,) |
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498 else: |
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499 queries = (helptopic, helpcmd, helpext, helpextcmd) |
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500 for f in queries: |
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501 try: |
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502 rst = f(name) |
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503 break |
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504 except error.UnknownCommand: |
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505 pass |
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506 else: |
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507 if unknowncmd: |
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508 raise error.UnknownCommand(name) |
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509 else: |
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510 msg = _('no such help topic: %s') % name |
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511 hint = _('try "hg help --keyword %s"') % name |
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512 raise util.Abort(msg, hint=hint) |
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513 else: |
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514 # program name |
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515 if not ui.quiet: |
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516 rst = [_("Mercurial Distributed SCM\n"), '\n'] |
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517 rst.extend(helplist()) |
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518 |
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519 return ''.join(rst) |