Mercurial > hg
annotate mercurial/help.py @ 24946:c44534209a0a
bookmarks: rename readcurrent to readactive (API)
Today, the terms 'active' and 'current' are interchangeably used throughout the
codebase in reference to the active bookmark (the bookmark that will be updated
with the next commit). This leads to confusion among developers and users.
This patch is part of a series to standardize the usage to 'active' throughout
the mercurial codebase and user interface.
author | Ryan McElroy <rmcelroy@fb.com> |
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date | Mon, 13 Apr 2015 23:03:13 -0700 |
parents | 117b9a101f71 |
children | 328739ea70c3 |
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, 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 ]) |
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170 |
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171 # Map topics to lists of callable taking the current topic help and |
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172 # returning the updated version |
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173 helphooks = {} |
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174 |
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175 def addtopichook(topic, rewriter): |
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176 helphooks.setdefault(topic, []).append(rewriter) |
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177 |
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178 def makeitemsdoc(topic, doc, marker, items, dedent=False): |
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179 """Extract docstring from the items key to function mapping, build a |
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180 .single documentation block and use it to overwrite the marker in doc |
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181 """ |
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182 entries = [] |
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183 for name in sorted(items): |
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184 text = (items[name].__doc__ or '').rstrip() |
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185 if not text: |
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186 continue |
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187 text = gettext(text) |
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188 if dedent: |
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189 text = textwrap.dedent(text) |
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190 lines = text.splitlines() |
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191 doclines = [(lines[0])] |
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192 for l in lines[1:]: |
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193 # Stop once we find some Python doctest |
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194 if l.strip().startswith('>>>'): |
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195 break |
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196 if dedent: |
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197 doclines.append(l.rstrip()) |
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198 else: |
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199 doclines.append(' ' + l.strip()) |
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200 entries.append('\n'.join(doclines)) |
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201 entries = '\n\n'.join(entries) |
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202 return doc.replace(marker, entries) |
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203 |
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204 def addtopicsymbols(topic, marker, symbols, dedent=False): |
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205 def add(topic, doc): |
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206 return makeitemsdoc(topic, doc, marker, symbols, dedent=dedent) |
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207 addtopichook(topic, add) |
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208 |
14686 | 209 addtopicsymbols('filesets', '.. predicatesmarker', fileset.symbols) |
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210 addtopicsymbols('merge-tools', '.. internaltoolsmarker', |
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211 filemerge.internalsdoc) |
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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 addtopicsymbols('templates', '.. functionsmarker', templater.funcs) |
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216 addtopicsymbols('hgweb', '.. webcommandsmarker', webcommands.commands, |
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217 dedent=True) |
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218 |
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219 def help_(ui, name, unknowncmd=False, full=True, **opts): |
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220 ''' |
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221 Generate the help for 'name' as unformatted restructured text. If |
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222 'name' is None, describe the commands available. |
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223 ''' |
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224 |
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225 import commands # avoid cycle |
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226 |
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227 def helpcmd(name): |
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228 try: |
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229 aliases, entry = cmdutil.findcmd(name, commands.table, |
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230 strict=unknowncmd) |
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231 except error.AmbiguousCommand, inst: |
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232 # py3k fix: except vars can't be used outside the scope of the |
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233 # except block, nor can be used inside a lambda. python issue4617 |
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234 prefix = inst.args[0] |
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235 select = lambda c: c.lstrip('^').startswith(prefix) |
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236 rst = helplist(select) |
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237 return rst |
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238 |
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239 rst = [] |
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240 |
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241 # check if it's an invalid alias and display its error if it is |
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242 if getattr(entry[0], 'badalias', None): |
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243 rst.append(entry[0].badalias + '\n') |
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244 if entry[0].unknowncmd: |
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245 try: |
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246 rst.extend(helpextcmd(entry[0].cmdname)) |
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247 except error.UnknownCommand: |
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248 pass |
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249 return rst |
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250 |
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251 # synopsis |
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252 if len(entry) > 2: |
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253 if entry[2].startswith('hg'): |
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254 rst.append("%s\n" % entry[2]) |
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255 else: |
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256 rst.append('hg %s %s\n' % (aliases[0], entry[2])) |
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257 else: |
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258 rst.append('hg %s\n' % aliases[0]) |
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259 # aliases |
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260 if full and not ui.quiet and len(aliases) > 1: |
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261 rst.append(_("\naliases: %s\n") % ', '.join(aliases[1:])) |
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262 rst.append('\n') |
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263 |
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264 # description |
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265 doc = gettext(entry[0].__doc__) |
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266 if not doc: |
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267 doc = _("(no help text available)") |
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268 if util.safehasattr(entry[0], 'definition'): # aliased command |
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269 if entry[0].definition.startswith('!'): # shell alias |
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270 doc = _('shell alias for::\n\n %s') % entry[0].definition[1:] |
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271 else: |
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272 doc = _('alias for: hg %s\n\n%s') % (entry[0].definition, doc) |
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273 doc = doc.splitlines(True) |
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274 if ui.quiet or not full: |
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275 rst.append(doc[0]) |
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276 else: |
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277 rst.extend(doc) |
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278 rst.append('\n') |
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279 |
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280 # check if this command shadows a non-trivial (multi-line) |
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281 # extension help text |
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282 try: |
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283 mod = extensions.find(name) |
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284 doc = gettext(mod.__doc__) or '' |
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285 if '\n' in doc.strip(): |
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286 msg = _('(use "hg help -e %s" to show help for ' |
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287 'the %s extension)') % (name, name) |
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288 rst.append('\n%s\n' % msg) |
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289 except KeyError: |
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290 pass |
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291 |
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292 # options |
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293 if not ui.quiet and entry[1]: |
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294 rst.append(optrst(_("options"), entry[1], ui.verbose)) |
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295 |
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296 if ui.verbose: |
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297 rst.append(optrst(_("global options"), |
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298 commands.globalopts, ui.verbose)) |
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299 |
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300 if not ui.verbose: |
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301 if not full: |
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302 rst.append(_('\n(use "hg %s -h" to show more help)\n') |
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303 % name) |
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304 elif not ui.quiet: |
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305 rst.append(_('\n(some details hidden, use --verbose ' |
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306 'to show complete help)')) |
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307 |
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308 return rst |
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309 |
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310 |
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311 def helplist(select=None): |
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312 # list of commands |
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313 if name == "shortlist": |
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314 header = _('basic commands:\n\n') |
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315 elif name == "debug": |
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316 header = _('debug commands (internal and unsupported):\n\n') |
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317 else: |
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318 header = _('list of commands:\n\n') |
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319 |
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320 h = {} |
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321 cmds = {} |
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322 for c, e in commands.table.iteritems(): |
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323 f = c.split("|", 1)[0] |
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324 if select and not select(f): |
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325 continue |
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326 if (not select and name != 'shortlist' and |
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327 e[0].__module__ != commands.__name__): |
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328 continue |
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329 if name == "shortlist" and not f.startswith("^"): |
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330 continue |
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331 f = f.lstrip("^") |
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332 if not ui.debugflag and f.startswith("debug") and name != "debug": |
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333 continue |
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334 doc = e[0].__doc__ |
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335 if doc and 'DEPRECATED' in doc and not ui.verbose: |
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336 continue |
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337 doc = gettext(doc) |
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338 if not doc: |
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339 doc = _("(no help text available)") |
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340 h[f] = doc.splitlines()[0].rstrip() |
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341 cmds[f] = c.lstrip("^") |
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342 |
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343 rst = [] |
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344 if not h: |
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345 if not ui.quiet: |
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346 rst.append(_('no commands defined\n')) |
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347 return rst |
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348 |
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349 if not ui.quiet: |
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350 rst.append(header) |
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351 fns = sorted(h) |
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352 for f in fns: |
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353 if ui.verbose: |
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354 commacmds = cmds[f].replace("|",", ") |
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355 rst.append(" :%s: %s\n" % (commacmds, h[f])) |
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356 else: |
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357 rst.append(' :%s: %s\n' % (f, h[f])) |
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358 |
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359 if not name: |
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360 exts = listexts(_('enabled extensions:'), extensions.enabled()) |
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361 if exts: |
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362 rst.append('\n') |
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363 rst.extend(exts) |
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364 |
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365 rst.append(_("\nadditional help topics:\n\n")) |
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366 topics = [] |
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367 for names, header, doc in helptable: |
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368 topics.append((names[0], header)) |
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369 for t, desc in topics: |
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370 rst.append(" :%s: %s\n" % (t, desc)) |
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371 |
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372 if ui.quiet: |
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373 pass |
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374 elif ui.verbose: |
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375 rst.append('\n%s\n' % optrst(_("global options"), |
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376 commands.globalopts, ui.verbose)) |
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377 if name == 'shortlist': |
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378 rst.append(_('\n(use "hg help" for the full list ' |
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379 'of commands)\n')) |
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380 else: |
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381 if name == 'shortlist': |
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382 rst.append(_('\n(use "hg help" for the full list of commands ' |
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383 'or "hg -v" for details)\n')) |
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384 elif name and not full: |
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385 rst.append(_('\n(use "hg help %s" to show the full help ' |
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386 'text)\n') % name) |
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387 elif name and cmds and name in cmds.keys(): |
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388 rst.append(_('\n(use "hg help -v -e %s" to show built-in ' |
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389 'aliases and global options)\n') % name) |
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390 else: |
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391 rst.append(_('\n(use "hg help -v%s" to show built-in aliases ' |
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392 'and global options)\n') |
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393 % (name and " " + name or "")) |
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394 return rst |
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395 |
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396 def helptopic(name): |
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397 for names, header, doc in helptable: |
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398 if name in names: |
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399 break |
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400 else: |
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401 raise error.UnknownCommand(name) |
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402 |
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403 rst = [minirst.section(header)] |
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404 |
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405 # description |
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406 if not doc: |
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407 rst.append(" %s\n" % _("(no help text available)")) |
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408 if callable(doc): |
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409 rst += [" %s\n" % l for l in doc().splitlines()] |
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410 |
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411 if not ui.verbose: |
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412 omitted = _('(some details hidden, use --verbose' |
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413 ' to show complete help)') |
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414 indicateomitted(rst, omitted) |
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415 |
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416 try: |
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417 cmdutil.findcmd(name, commands.table) |
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418 rst.append(_('\nuse "hg help -c %s" to see help for ' |
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419 'the %s command\n') % (name, name)) |
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420 except error.UnknownCommand: |
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421 pass |
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422 return rst |
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423 |
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424 def helpext(name): |
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425 try: |
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426 mod = extensions.find(name) |
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427 doc = gettext(mod.__doc__) or _('no help text available') |
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428 except KeyError: |
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429 mod = None |
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430 doc = extensions.disabledext(name) |
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431 if not doc: |
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432 raise error.UnknownCommand(name) |
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433 |
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434 if '\n' not in doc: |
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435 head, tail = doc, "" |
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436 else: |
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437 head, tail = doc.split('\n', 1) |
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438 rst = [_('%s extension - %s\n\n') % (name.split('.')[-1], head)] |
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439 if tail: |
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440 rst.extend(tail.splitlines(True)) |
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441 rst.append('\n') |
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442 |
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443 if not ui.verbose: |
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444 omitted = _('(some details hidden, use --verbose' |
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445 ' to show complete help)') |
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446 indicateomitted(rst, omitted) |
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447 |
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448 if mod: |
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449 try: |
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450 ct = mod.cmdtable |
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451 except AttributeError: |
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452 ct = {} |
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453 modcmds = set([c.split('|', 1)[0] for c in ct]) |
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454 rst.extend(helplist(modcmds.__contains__)) |
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455 else: |
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456 rst.append(_('(use "hg help extensions" for information on enabling' |
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457 ' extensions)\n')) |
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458 return rst |
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459 |
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460 def helpextcmd(name): |
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461 cmd, ext, mod = extensions.disabledcmd(ui, name, |
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462 ui.configbool('ui', 'strict')) |
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463 doc = gettext(mod.__doc__).splitlines()[0] |
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464 |
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465 rst = listexts(_("'%s' is provided by the following " |
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466 "extension:") % cmd, {ext: doc}, indent=4) |
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467 rst.append('\n') |
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468 rst.append(_('(use "hg help extensions" for information on enabling ' |
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469 'extensions)\n')) |
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470 return rst |
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471 |
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472 |
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473 rst = [] |
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474 kw = opts.get('keyword') |
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475 if kw: |
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476 matches = topicmatch(kw) |
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477 for t, title in (('topics', _('Topics')), |
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478 ('commands', _('Commands')), |
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479 ('extensions', _('Extensions')), |
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480 ('extensioncommands', _('Extension Commands'))): |
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481 if matches[t]: |
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482 rst.append('%s:\n\n' % title) |
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483 rst.extend(minirst.maketable(sorted(matches[t]), 1)) |
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484 rst.append('\n') |
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485 if not rst: |
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486 msg = _('no matches') |
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487 hint = _('try "hg help" for a list of topics') |
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488 raise util.Abort(msg, hint=hint) |
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489 elif name and name != 'shortlist': |
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490 if unknowncmd: |
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491 queries = (helpextcmd,) |
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492 elif opts.get('extension'): |
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493 queries = (helpext,) |
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494 elif opts.get('command'): |
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495 queries = (helpcmd,) |
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496 else: |
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497 queries = (helptopic, helpcmd, helpext, helpextcmd) |
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498 for f in queries: |
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499 try: |
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500 rst = f(name) |
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501 break |
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502 except error.UnknownCommand: |
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503 pass |
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504 else: |
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505 if unknowncmd: |
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506 raise error.UnknownCommand(name) |
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507 else: |
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508 msg = _('no such help topic: %s') % name |
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509 hint = _('try "hg help --keyword %s"') % name |
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510 raise util.Abort(msg, hint=hint) |
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511 else: |
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512 # program name |
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513 if not ui.quiet: |
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514 rst = [_("Mercurial Distributed SCM\n"), '\n'] |
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515 rst.extend(helplist()) |
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516 |
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517 return ''.join(rst) |