Mercurial > hg
annotate mercurial/help.py @ 20655:37f3be9d1541
doc: gendoc.py creates valid output for option descriptions with newlines
gendoc.py did not handle the hanging indentation for descriptions. Work around
this by joining all in one single line (same as in minirst since previous
patch).
This problem occurred when translations of option lines were very long. Do not
bother the translators with this detail.
On a long option description, the translator continued on a new line as usual.
gendoc.py created invalid rst syntax like this:
-o, --option
Description line 1
description line 2
The new output is:
-o, --option
Description line 1 description line 2
The lines could theoretically become very long, but line breaking is handled
when generating the final documentation.
author | Simon Heimberg <simohe@besonet.ch> |
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date | Thu, 20 Feb 2014 09:17:22 +0100 |
parents | 02c303f64917 |
children | 05267e6e94dd |
rev | line source |
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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, sys, 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(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 _("DEPRECATED") in desc and not verbose: |
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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 rst = minirst.maketable(data, 1) |
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63 |
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64 if multioccur: |
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65 rst.append(_("\n[+] marked option can be specified multiple times\n")) |
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66 |
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67 return ''.join(rst) |
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68 |
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69 def indicateomitted(rst, omitted, notomitted=None): |
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70 rst.append('\n\n.. container:: omitted\n\n %s\n\n' % omitted) |
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71 if notomitted: |
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72 rst.append('\n\n.. container:: notomitted\n\n %s\n\n' % notomitted) |
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73 |
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74 def topicmatch(kw): |
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75 """Return help topics matching kw. |
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76 |
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77 Returns {'section': [(name, summary), ...], ...} where section is |
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78 one of topics, commands, extensions, or extensioncommands. |
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79 """ |
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80 kw = encoding.lower(kw) |
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81 def lowercontains(container): |
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82 return kw in encoding.lower(container) # translated in helptable |
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83 results = {'topics': [], |
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84 'commands': [], |
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85 'extensions': [], |
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86 'extensioncommands': [], |
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87 } |
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88 for names, header, doc in helptable: |
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89 if (sum(map(lowercontains, names)) |
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90 or lowercontains(header) |
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91 or lowercontains(doc())): |
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92 results['topics'].append((names[0], header)) |
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93 import commands # avoid cycle |
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94 for cmd, entry in commands.table.iteritems(): |
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95 if cmd.startswith('debug'): |
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96 continue |
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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 if util.mainfrozen(): |
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133 module = sys.executable |
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134 else: |
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135 module = __file__ |
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136 base = os.path.dirname(module) |
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137 |
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138 for dir in ('.', '..'): |
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139 docdir = os.path.join(base, dir, 'help') |
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140 if os.path.isdir(docdir): |
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141 break |
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142 |
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143 path = os.path.join(docdir, topic + ".txt") |
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144 doc = gettext(util.readfile(path)) |
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145 for rewriter in helphooks.get(topic, []): |
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146 doc = rewriter(topic, doc) |
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147 return doc |
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148 |
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149 return loader |
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150 |
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151 helptable = sorted([ |
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152 (["config", "hgrc"], _("Configuration Files"), loaddoc('config')), |
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153 (["dates"], _("Date Formats"), loaddoc('dates')), |
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154 (["patterns"], _("File Name Patterns"), loaddoc('patterns')), |
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155 (['environment', 'env'], _('Environment Variables'), |
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156 loaddoc('environment')), |
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157 (['revisions', 'revs'], _('Specifying Single Revisions'), |
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158 loaddoc('revisions')), |
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159 (['multirevs', 'mrevs'], _('Specifying Multiple Revisions'), |
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160 loaddoc('multirevs')), |
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161 (['revsets', 'revset'], _("Specifying Revision Sets"), loaddoc('revsets')), |
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162 (['filesets', 'fileset'], _("Specifying File Sets"), loaddoc('filesets')), |
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163 (['diffs'], _('Diff Formats'), loaddoc('diffs')), |
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164 (['merge-tools', 'mergetools'], _('Merge Tools'), loaddoc('merge-tools')), |
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165 (['templating', 'templates', 'template', 'style'], _('Template Usage'), |
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166 loaddoc('templates')), |
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167 (['urls'], _('URL Paths'), loaddoc('urls')), |
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168 (["extensions"], _("Using Additional Features"), extshelp), |
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169 (["subrepos", "subrepo"], _("Subrepositories"), loaddoc('subrepos')), |
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170 (["hgweb"], _("Configuring hgweb"), loaddoc('hgweb')), |
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171 (["glossary"], _("Glossary"), loaddoc('glossary')), |
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172 (["hgignore", "ignore"], _("Syntax for Mercurial Ignore Files"), |
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173 loaddoc('hgignore')), |
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174 (["phases"], _("Working with Phases"), loaddoc('phases')), |
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175 ]) |
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176 |
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177 # Map topics to lists of callable taking the current topic help and |
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178 # returning the updated version |
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179 helphooks = {} |
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180 |
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181 def addtopichook(topic, rewriter): |
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182 helphooks.setdefault(topic, []).append(rewriter) |
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183 |
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184 def makeitemsdoc(topic, doc, marker, items): |
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185 """Extract docstring from the items key to function mapping, build a |
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186 .single documentation block and use it to overwrite the marker in doc |
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187 """ |
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188 entries = [] |
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189 for name in sorted(items): |
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190 text = (items[name].__doc__ or '').rstrip() |
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191 if not text: |
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192 continue |
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193 text = gettext(text) |
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194 lines = text.splitlines() |
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195 doclines = [(lines[0])] |
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196 for l in lines[1:]: |
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197 # Stop once we find some Python doctest |
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198 if l.strip().startswith('>>>'): |
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199 break |
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200 doclines.append(' ' + l.strip()) |
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201 entries.append('\n'.join(doclines)) |
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202 entries = '\n\n'.join(entries) |
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203 return doc.replace(marker, entries) |
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204 |
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205 def addtopicsymbols(topic, marker, symbols): |
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206 def add(topic, doc): |
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207 return makeitemsdoc(topic, doc, marker, symbols) |
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208 addtopichook(topic, add) |
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209 |
14686 | 210 addtopicsymbols('filesets', '.. predicatesmarker', fileset.symbols) |
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211 addtopicsymbols('merge-tools', '.. internaltoolsmarker', filemerge.internals) |
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212 addtopicsymbols('revsets', '.. predicatesmarker', revset.symbols) |
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213 addtopicsymbols('templates', '.. keywordsmarker', templatekw.dockeywords) |
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214 addtopicsymbols('templates', '.. filtersmarker', templatefilters.filters) |
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215 |
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216 def help_(ui, name, unknowncmd=False, full=True, **opts): |
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217 ''' |
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218 Generate the help for 'name' as unformatted restructured text. If |
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219 'name' is None, describe the commands available. |
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220 ''' |
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221 |
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222 import commands # avoid cycle |
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223 |
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224 def helpcmd(name): |
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225 try: |
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226 aliases, entry = cmdutil.findcmd(name, commands.table, |
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227 strict=unknowncmd) |
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228 except error.AmbiguousCommand, inst: |
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229 # py3k fix: except vars can't be used outside the scope of the |
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230 # except block, nor can be used inside a lambda. python issue4617 |
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231 prefix = inst.args[0] |
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232 select = lambda c: c.lstrip('^').startswith(prefix) |
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233 rst = helplist(select) |
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234 return rst |
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235 |
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236 rst = [] |
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237 |
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238 # check if it's an invalid alias and display its error if it is |
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239 if getattr(entry[0], 'badalias', False): |
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240 if not unknowncmd: |
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241 ui.pushbuffer() |
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242 entry[0](ui) |
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243 rst.append(ui.popbuffer()) |
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244 return rst |
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245 |
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246 # synopsis |
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247 if len(entry) > 2: |
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248 if entry[2].startswith('hg'): |
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249 rst.append("%s\n" % entry[2]) |
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250 else: |
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251 rst.append('hg %s %s\n' % (aliases[0], entry[2])) |
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252 else: |
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253 rst.append('hg %s\n' % aliases[0]) |
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254 # aliases |
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255 if full and not ui.quiet and len(aliases) > 1: |
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256 rst.append(_("\naliases: %s\n") % ', '.join(aliases[1:])) |
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257 rst.append('\n') |
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258 |
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259 # description |
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260 doc = gettext(entry[0].__doc__) |
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261 if not doc: |
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262 doc = _("(no help text available)") |
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263 if util.safehasattr(entry[0], 'definition'): # aliased command |
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264 if entry[0].definition.startswith('!'): # shell alias |
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265 doc = _('shell alias for::\n\n %s') % entry[0].definition[1:] |
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266 else: |
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267 doc = _('alias for: hg %s\n\n%s') % (entry[0].definition, doc) |
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268 doc = doc.splitlines(True) |
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269 if ui.quiet or not full: |
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270 rst.append(doc[0]) |
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271 else: |
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272 rst.extend(doc) |
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273 rst.append('\n') |
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274 |
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275 # check if this command shadows a non-trivial (multi-line) |
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276 # extension help text |
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277 try: |
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278 mod = extensions.find(name) |
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279 doc = gettext(mod.__doc__) or '' |
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280 if '\n' in doc.strip(): |
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281 msg = _('use "hg help -e %s" to show help for ' |
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282 'the %s extension') % (name, name) |
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283 rst.append('\n%s\n' % msg) |
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284 except KeyError: |
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285 pass |
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286 |
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287 # options |
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288 if not ui.quiet and entry[1]: |
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289 rst.append('\n%s\n\n' % _("options:")) |
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290 rst.append(optrst(entry[1], ui.verbose)) |
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291 |
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292 if ui.verbose: |
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293 rst.append('\n%s\n\n' % _("global options:")) |
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294 rst.append(optrst(commands.globalopts, ui.verbose)) |
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295 |
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296 if not ui.verbose: |
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297 if not full: |
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298 rst.append(_('\nuse "hg help %s" to show the full help text\n') |
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299 % name) |
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300 elif not ui.quiet: |
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301 omitted = _('use "hg -v help %s" to show more complete' |
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302 ' help and the global options') % name |
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303 notomitted = _('use "hg -v help %s" to show' |
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304 ' the global options') % name |
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305 indicateomitted(rst, omitted, notomitted) |
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306 |
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307 return rst |
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308 |
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309 |
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310 def helplist(select=None): |
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311 # list of commands |
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312 if name == "shortlist": |
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313 header = _('basic commands:\n\n') |
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314 else: |
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315 header = _('list of commands:\n\n') |
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316 |
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317 h = {} |
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318 cmds = {} |
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319 for c, e in commands.table.iteritems(): |
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320 f = c.split("|", 1)[0] |
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321 if select and not select(f): |
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322 continue |
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323 if (not select and name != 'shortlist' and |
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324 e[0].__module__ != commands.__name__): |
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325 continue |
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326 if name == "shortlist" and not f.startswith("^"): |
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327 continue |
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328 f = f.lstrip("^") |
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329 if not ui.debugflag and f.startswith("debug"): |
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330 continue |
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331 doc = e[0].__doc__ |
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332 if doc and 'DEPRECATED' in doc and not ui.verbose: |
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333 continue |
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334 doc = gettext(doc) |
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335 if not doc: |
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336 doc = _("(no help text available)") |
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337 h[f] = doc.splitlines()[0].rstrip() |
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338 cmds[f] = c.lstrip("^") |
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339 |
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340 rst = [] |
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341 if not h: |
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342 if not ui.quiet: |
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343 rst.append(_('no commands defined\n')) |
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344 return rst |
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345 |
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346 if not ui.quiet: |
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347 rst.append(header) |
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348 fns = sorted(h) |
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349 for f in fns: |
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350 if ui.verbose: |
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351 commacmds = cmds[f].replace("|",", ") |
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352 rst.append(" :%s: %s\n" % (commacmds, h[f])) |
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353 else: |
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354 rst.append(' :%s: %s\n' % (f, h[f])) |
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355 |
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356 if not name: |
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357 exts = listexts(_('enabled extensions:'), extensions.enabled()) |
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358 if exts: |
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359 rst.append('\n') |
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360 rst.extend(exts) |
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361 |
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362 rst.append(_("\nadditional help topics:\n\n")) |
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363 topics = [] |
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364 for names, header, doc in helptable: |
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365 topics.append((names[0], header)) |
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366 for t, desc in topics: |
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367 rst.append(" :%s: %s\n" % (t, desc)) |
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368 |
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369 optlist = [] |
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370 if not ui.quiet: |
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371 if ui.verbose: |
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372 optlist.append((_("global options:"), commands.globalopts)) |
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373 if name == 'shortlist': |
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374 optlist.append((_('use "hg help" for the full list ' |
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375 'of commands'), ())) |
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376 else: |
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377 if name == 'shortlist': |
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378 msg = _('use "hg help" for the full list of commands ' |
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379 'or "hg -v" for details') |
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380 elif name and not full: |
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381 msg = _('use "hg help %s" to show the full help ' |
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382 'text') % name |
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383 else: |
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384 msg = _('use "hg -v help%s" to show builtin aliases and ' |
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385 'global options') % (name and " " + name or "") |
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386 optlist.append((msg, ())) |
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387 |
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388 if optlist: |
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389 for title, options in optlist: |
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390 rst.append('\n%s\n' % title) |
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391 if options: |
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392 rst.append('\n%s\n' % optrst(options, ui.verbose)) |
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393 return rst |
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394 |
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395 def helptopic(name): |
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396 for names, header, doc in helptable: |
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397 if name in names: |
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398 break |
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399 else: |
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400 raise error.UnknownCommand(name) |
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401 |
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402 rst = [minirst.section(header)] |
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403 |
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404 # description |
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405 if not doc: |
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406 rst.append(" %s\n" % _("(no help text available)")) |
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407 if util.safehasattr(doc, '__call__'): |
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408 rst += [" %s\n" % l for l in doc().splitlines()] |
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409 |
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410 if not ui.verbose: |
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411 omitted = (_('use "hg help -v %s" to show more complete help') % |
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412 name) |
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413 indicateomitted(rst, omitted) |
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414 |
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415 try: |
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416 cmdutil.findcmd(name, commands.table) |
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417 rst.append(_('\nuse "hg help -c %s" to see help for ' |
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418 'the %s command\n') % (name, name)) |
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419 except error.UnknownCommand: |
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420 pass |
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421 return rst |
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422 |
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423 def helpext(name): |
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424 try: |
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425 mod = extensions.find(name) |
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426 doc = gettext(mod.__doc__) or _('no help text available') |
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427 except KeyError: |
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428 mod = None |
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429 doc = extensions.disabledext(name) |
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430 if not doc: |
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431 raise error.UnknownCommand(name) |
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432 |
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433 if '\n' not in doc: |
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434 head, tail = doc, "" |
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435 else: |
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436 head, tail = doc.split('\n', 1) |
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437 rst = [_('%s extension - %s\n\n') % (name.split('.')[-1], head)] |
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438 if tail: |
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439 rst.extend(tail.splitlines(True)) |
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440 rst.append('\n') |
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441 |
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442 if not ui.verbose: |
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443 omitted = (_('use "hg help -v %s" to show more complete help') % |
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444 name) |
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445 indicateomitted(rst, omitted) |
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446 |
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447 if mod: |
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448 try: |
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449 ct = mod.cmdtable |
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450 except AttributeError: |
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451 ct = {} |
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452 modcmds = set([c.split('|', 1)[0] for c in ct]) |
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453 rst.extend(helplist(modcmds.__contains__)) |
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454 else: |
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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 def helpextcmd(name): |
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460 cmd, ext, mod = extensions.disabledcmd(ui, name, |
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461 ui.configbool('ui', 'strict')) |
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462 doc = gettext(mod.__doc__).splitlines()[0] |
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463 |
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464 rst = listexts(_("'%s' is provided by the following " |
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465 "extension:") % cmd, {ext: doc}, indent=4) |
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466 rst.append('\n') |
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467 rst.append(_('use "hg help extensions" for information on enabling ' |
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468 'extensions\n')) |
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469 return rst |
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470 |
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471 |
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472 rst = [] |
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473 kw = opts.get('keyword') |
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474 if kw: |
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475 matches = topicmatch(kw) |
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476 for t, title in (('topics', _('Topics')), |
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477 ('commands', _('Commands')), |
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478 ('extensions', _('Extensions')), |
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479 ('extensioncommands', _('Extension Commands'))): |
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480 if matches[t]: |
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481 rst.append('%s:\n\n' % title) |
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482 rst.extend(minirst.maketable(sorted(matches[t]), 1)) |
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483 rst.append('\n') |
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484 elif name and name != 'shortlist': |
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485 i = None |
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486 if unknowncmd: |
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487 queries = (helpextcmd,) |
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488 elif opts.get('extension'): |
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489 queries = (helpext,) |
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490 elif opts.get('command'): |
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491 queries = (helpcmd,) |
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492 else: |
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493 queries = (helptopic, helpcmd, helpext, helpextcmd) |
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494 for f in queries: |
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495 try: |
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496 rst = f(name) |
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497 i = None |
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498 break |
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499 except error.UnknownCommand, inst: |
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500 i = inst |
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501 if i: |
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502 raise i |
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503 else: |
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504 # program name |
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505 if not ui.quiet: |
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506 rst = [_("Mercurial Distributed SCM\n"), '\n'] |
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507 rst.extend(helplist()) |
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508 |
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509 return ''.join(rst) |