Mercurial > hg
annotate mercurial/help.py @ 25001:9668c1a433b3
templater: switch methods table on compileexp() of func args and inner expr
The next patch will introduce integer literals, but the schemes extension
expects that '{1}', '{2}', ... are interpreted as keywords. This patch allows
us to process '{foo(1)}' as 'func(integer)', whereas '{1}' as 'symbol'.
author | Yuya Nishihara <yuya@tcha.org> |
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date | Sat, 02 May 2015 18:05:04 +0900 |
parents | 117b9a101f71 |
children | 328739ea70c3 |
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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) |