Mercurial > hg
annotate mercurial/help.py @ 26606:2a405d307f8c
filemerge: also return whether the merge is complete
In future patches, we'll pause merges after the premerge step. After the
premerge step we'll return complete = False.
author | Siddharth Agarwal <sid0@fb.com> |
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date | Sun, 11 Oct 2015 12:56:21 -0700 |
parents | 56b2bcea2529 |
children | 7a77ee434179 |
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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 _exclkeywords = [ |
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18 "(DEPRECATED)", |
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19 "(EXPERIMENTAL)", |
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20 # i18n: "(DEPRECATED)" is a keyword, must be translated consistently |
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21 _("(DEPRECATED)"), |
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22 # i18n: "(EXPERIMENTAL)" is a keyword, must be translated consistently |
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23 _("(EXPERIMENTAL)"), |
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24 ] |
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25 |
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26 def listexts(header, exts, indent=1, showdeprecated=False): |
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27 '''return a text listing of the given extensions''' |
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28 rst = [] |
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29 if exts: |
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30 rst.append('\n%s\n\n' % header) |
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31 for name, desc in sorted(exts.iteritems()): |
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32 if not showdeprecated and any(w in desc for w in _exclkeywords): |
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33 continue |
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34 rst.append('%s:%s: %s\n' % (' ' * indent, name, desc)) |
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35 return rst |
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36 |
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37 def extshelp(ui): |
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38 rst = loaddoc('extensions')(ui).splitlines(True) |
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39 rst.extend(listexts( |
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40 _('enabled extensions:'), extensions.enabled(), showdeprecated=True)) |
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41 rst.extend(listexts(_('disabled extensions:'), extensions.disabled())) |
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42 doc = ''.join(rst) |
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43 return doc |
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44 |
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45 def optrst(header, options, verbose): |
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46 data = [] |
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47 multioccur = False |
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48 for option in options: |
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49 if len(option) == 5: |
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50 shortopt, longopt, default, desc, optlabel = option |
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51 else: |
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52 shortopt, longopt, default, desc = option |
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53 optlabel = _("VALUE") # default label |
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54 |
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55 if not verbose and any(w in desc for w in _exclkeywords): |
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56 continue |
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57 |
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58 so = '' |
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59 if shortopt: |
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60 so = '-' + shortopt |
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61 lo = '--' + longopt |
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62 if default: |
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63 desc += _(" (default: %s)") % default |
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64 |
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65 if isinstance(default, list): |
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66 lo += " %s [+]" % optlabel |
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67 multioccur = True |
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68 elif (default is not None) and not isinstance(default, bool): |
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69 lo += " %s" % optlabel |
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70 |
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71 data.append((so, lo, desc)) |
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72 |
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73 if multioccur: |
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74 header += (_(" ([+] can be repeated)")) |
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75 |
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76 rst = ['\n%s:\n\n' % header] |
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77 rst.extend(minirst.maketable(data, 1)) |
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78 |
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79 return ''.join(rst) |
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80 |
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81 def indicateomitted(rst, omitted, notomitted=None): |
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82 rst.append('\n\n.. container:: omitted\n\n %s\n\n' % omitted) |
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83 if notomitted: |
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84 rst.append('\n\n.. container:: notomitted\n\n %s\n\n' % notomitted) |
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85 |
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86 def topicmatch(ui, kw): |
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87 """Return help topics matching kw. |
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88 |
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89 Returns {'section': [(name, summary), ...], ...} where section is |
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90 one of topics, commands, extensions, or extensioncommands. |
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91 """ |
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92 kw = encoding.lower(kw) |
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93 def lowercontains(container): |
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94 return kw in encoding.lower(container) # translated in helptable |
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95 results = {'topics': [], |
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96 'commands': [], |
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97 'extensions': [], |
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98 'extensioncommands': [], |
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99 } |
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100 for names, header, doc in helptable: |
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101 # Old extensions may use a str as doc. |
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102 if (sum(map(lowercontains, names)) |
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103 or lowercontains(header) |
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104 or (callable(doc) and lowercontains(doc(ui)))): |
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105 results['topics'].append((names[0], header)) |
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106 import commands # avoid cycle |
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107 for cmd, entry in commands.table.iteritems(): |
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108 if len(entry) == 3: |
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109 summary = entry[2] |
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110 else: |
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111 summary = '' |
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112 # translate docs *before* searching there |
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113 docs = _(getattr(entry[0], '__doc__', None)) or '' |
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114 if kw in cmd or lowercontains(summary) or lowercontains(docs): |
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115 doclines = docs.splitlines() |
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116 if doclines: |
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117 summary = doclines[0] |
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118 cmdname = cmd.split('|')[0].lstrip('^') |
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119 results['commands'].append((cmdname, summary)) |
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120 for name, docs in itertools.chain( |
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121 extensions.enabled(False).iteritems(), |
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122 extensions.disabled().iteritems()): |
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123 # extensions.load ignores the UI argument |
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124 mod = extensions.load(None, name, '') |
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125 name = name.split('.')[-1] |
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126 if lowercontains(name) or lowercontains(docs): |
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127 # extension docs are already translated |
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128 results['extensions'].append((name, docs.splitlines()[0])) |
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129 for cmd, entry in getattr(mod, 'cmdtable', {}).iteritems(): |
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130 if kw in cmd or (len(entry) > 2 and lowercontains(entry[2])): |
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131 cmdname = cmd.split('|')[0].lstrip('^') |
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132 if entry[0].__doc__: |
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133 cmddoc = gettext(entry[0].__doc__).splitlines()[0] |
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134 else: |
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135 cmddoc = _('(no help text available)') |
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136 results['extensioncommands'].append((cmdname, cmddoc)) |
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137 return results |
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138 |
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139 def loaddoc(topic): |
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140 """Return a delayed loader for help/topic.txt.""" |
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142 def loader(ui): |
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143 docdir = os.path.join(util.datapath, 'help') |
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144 path = os.path.join(docdir, topic + ".txt") |
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145 doc = gettext(util.readfile(path)) |
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146 for rewriter in helphooks.get(topic, []): |
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147 doc = rewriter(ui, topic, doc) |
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148 return doc |
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149 |
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150 return loader |
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151 |
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152 helptable = sorted([ |
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153 (["config", "hgrc"], _("Configuration Files"), loaddoc('config')), |
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154 (["dates"], _("Date Formats"), loaddoc('dates')), |
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155 (["patterns"], _("File Name Patterns"), loaddoc('patterns')), |
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156 (['environment', 'env'], _('Environment Variables'), |
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157 loaddoc('environment')), |
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158 (['revisions', 'revs'], _('Specifying Single Revisions'), |
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159 loaddoc('revisions')), |
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160 (['multirevs', 'mrevs'], _('Specifying Multiple Revisions'), |
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161 loaddoc('multirevs')), |
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162 (['revsets', 'revset'], _("Specifying Revision Sets"), loaddoc('revsets')), |
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163 (['filesets', 'fileset'], _("Specifying File Sets"), loaddoc('filesets')), |
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164 (['diffs'], _('Diff Formats'), loaddoc('diffs')), |
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165 (['merge-tools', 'mergetools'], _('Merge Tools'), loaddoc('merge-tools')), |
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166 (['templating', 'templates', 'template', 'style'], _('Template Usage'), |
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167 loaddoc('templates')), |
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168 (['urls'], _('URL Paths'), loaddoc('urls')), |
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169 (["extensions"], _("Using Additional Features"), extshelp), |
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170 (["subrepos", "subrepo"], _("Subrepositories"), loaddoc('subrepos')), |
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171 (["hgweb"], _("Configuring hgweb"), loaddoc('hgweb')), |
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172 (["glossary"], _("Glossary"), loaddoc('glossary')), |
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173 (["hgignore", "ignore"], _("Syntax for Mercurial Ignore Files"), |
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174 loaddoc('hgignore')), |
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175 (["phases"], _("Working with Phases"), loaddoc('phases')), |
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176 (['scripting'], _('Using Mercurial from scripts and automation'), |
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177 loaddoc('scripting')), |
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178 ]) |
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179 |
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180 # Map topics to lists of callable taking the current topic help and |
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181 # returning the updated version |
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182 helphooks = {} |
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183 |
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184 def addtopichook(topic, rewriter): |
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185 helphooks.setdefault(topic, []).append(rewriter) |
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186 |
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187 def makeitemsdoc(ui, topic, doc, marker, items, dedent=False): |
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188 """Extract docstring from the items key to function mapping, build a |
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189 single documentation block and use it to overwrite the marker in doc. |
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190 """ |
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191 entries = [] |
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192 for name in sorted(items): |
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193 text = (items[name].__doc__ or '').rstrip() |
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194 if (not text |
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195 or not ui.verbose and any(w in text for w in _exclkeywords)): |
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196 continue |
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197 text = gettext(text) |
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198 if dedent: |
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199 text = textwrap.dedent(text) |
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200 lines = text.splitlines() |
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201 doclines = [(lines[0])] |
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202 for l in lines[1:]: |
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203 # Stop once we find some Python doctest |
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204 if l.strip().startswith('>>>'): |
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205 break |
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206 if dedent: |
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207 doclines.append(l.rstrip()) |
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208 else: |
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209 doclines.append(' ' + l.strip()) |
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210 entries.append('\n'.join(doclines)) |
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211 entries = '\n\n'.join(entries) |
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212 return doc.replace(marker, entries) |
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213 |
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214 def addtopicsymbols(topic, marker, symbols, dedent=False): |
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215 def add(ui, topic, doc): |
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216 return makeitemsdoc(ui, topic, doc, marker, symbols, dedent=dedent) |
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217 addtopichook(topic, add) |
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218 |
14686 | 219 addtopicsymbols('filesets', '.. predicatesmarker', fileset.symbols) |
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220 addtopicsymbols('merge-tools', '.. internaltoolsmarker', |
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221 filemerge.internalsdoc) |
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222 addtopicsymbols('revsets', '.. predicatesmarker', revset.symbols) |
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223 addtopicsymbols('templates', '.. keywordsmarker', templatekw.keywords) |
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224 addtopicsymbols('templates', '.. filtersmarker', templatefilters.filters) |
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225 addtopicsymbols('templates', '.. functionsmarker', templater.funcs) |
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226 addtopicsymbols('hgweb', '.. webcommandsmarker', webcommands.commands, |
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227 dedent=True) |
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228 |
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229 def help_(ui, name, unknowncmd=False, full=True, **opts): |
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230 ''' |
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231 Generate the help for 'name' as unformatted restructured text. If |
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232 'name' is None, describe the commands available. |
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233 ''' |
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234 |
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235 import commands # avoid cycle |
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236 |
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237 def helpcmd(name): |
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238 try: |
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239 aliases, entry = cmdutil.findcmd(name, commands.table, |
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240 strict=unknowncmd) |
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241 except error.AmbiguousCommand as inst: |
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242 # py3k fix: except vars can't be used outside the scope of the |
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243 # except block, nor can be used inside a lambda. python issue4617 |
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244 prefix = inst.args[0] |
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245 select = lambda c: c.lstrip('^').startswith(prefix) |
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246 rst = helplist(select) |
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247 return rst |
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248 |
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249 rst = [] |
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250 |
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251 # check if it's an invalid alias and display its error if it is |
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252 if getattr(entry[0], 'badalias', None): |
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253 rst.append(entry[0].badalias + '\n') |
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254 if entry[0].unknowncmd: |
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255 try: |
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256 rst.extend(helpextcmd(entry[0].cmdname)) |
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257 except error.UnknownCommand: |
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258 pass |
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259 return rst |
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260 |
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261 # synopsis |
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262 if len(entry) > 2: |
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263 if entry[2].startswith('hg'): |
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264 rst.append("%s\n" % entry[2]) |
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265 else: |
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266 rst.append('hg %s %s\n' % (aliases[0], entry[2])) |
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267 else: |
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268 rst.append('hg %s\n' % aliases[0]) |
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269 # aliases |
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270 if full and not ui.quiet and len(aliases) > 1: |
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271 rst.append(_("\naliases: %s\n") % ', '.join(aliases[1:])) |
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272 rst.append('\n') |
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273 |
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274 # description |
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275 doc = gettext(entry[0].__doc__) |
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276 if not doc: |
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277 doc = _("(no help text available)") |
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278 if util.safehasattr(entry[0], 'definition'): # aliased command |
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279 if entry[0].definition.startswith('!'): # shell alias |
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280 doc = _('shell alias for::\n\n %s') % entry[0].definition[1:] |
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281 else: |
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282 doc = _('alias for: hg %s\n\n%s') % (entry[0].definition, doc) |
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283 doc = doc.splitlines(True) |
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284 if ui.quiet or not full: |
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285 rst.append(doc[0]) |
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286 else: |
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287 rst.extend(doc) |
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288 rst.append('\n') |
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289 |
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290 # check if this command shadows a non-trivial (multi-line) |
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291 # extension help text |
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292 try: |
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293 mod = extensions.find(name) |
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294 doc = gettext(mod.__doc__) or '' |
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295 if '\n' in doc.strip(): |
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296 msg = _('(use "hg help -e %s" to show help for ' |
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297 'the %s extension)') % (name, name) |
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298 rst.append('\n%s\n' % msg) |
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299 except KeyError: |
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300 pass |
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301 |
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302 # options |
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303 if not ui.quiet and entry[1]: |
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304 rst.append(optrst(_("options"), entry[1], ui.verbose)) |
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305 |
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306 if ui.verbose: |
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307 rst.append(optrst(_("global options"), |
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308 commands.globalopts, ui.verbose)) |
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309 |
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310 if not ui.verbose: |
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311 if not full: |
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312 rst.append(_('\n(use "hg %s -h" to show more help)\n') |
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313 % name) |
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314 elif not ui.quiet: |
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315 rst.append(_('\n(some details hidden, use --verbose ' |
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316 'to show complete help)')) |
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317 |
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318 return rst |
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319 |
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320 |
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321 def helplist(select=None): |
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322 # list of commands |
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323 if name == "shortlist": |
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324 header = _('basic commands:\n\n') |
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325 elif name == "debug": |
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326 header = _('debug commands (internal and unsupported):\n\n') |
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327 else: |
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328 header = _('list of commands:\n\n') |
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329 |
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330 h = {} |
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331 cmds = {} |
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332 for c, e in commands.table.iteritems(): |
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333 f = c.split("|", 1)[0] |
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334 if select and not select(f): |
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335 continue |
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336 if (not select and name != 'shortlist' and |
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337 e[0].__module__ != commands.__name__): |
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338 continue |
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339 if name == "shortlist" and not f.startswith("^"): |
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340 continue |
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341 f = f.lstrip("^") |
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342 if not ui.debugflag and f.startswith("debug") and name != "debug": |
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343 continue |
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344 doc = e[0].__doc__ |
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345 if not ui.verbose and doc and any(w in doc for w in _exclkeywords): |
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346 continue |
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347 doc = gettext(doc) |
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348 if not doc: |
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349 doc = _("(no help text available)") |
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350 h[f] = doc.splitlines()[0].rstrip() |
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351 cmds[f] = c.lstrip("^") |
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352 |
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353 rst = [] |
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354 if not h: |
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355 if not ui.quiet: |
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356 rst.append(_('no commands defined\n')) |
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357 return rst |
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358 |
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359 if not ui.quiet: |
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360 rst.append(header) |
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361 fns = sorted(h) |
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362 for f in fns: |
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363 if ui.verbose: |
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364 commacmds = cmds[f].replace("|",", ") |
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365 rst.append(" :%s: %s\n" % (commacmds, h[f])) |
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366 else: |
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367 rst.append(' :%s: %s\n' % (f, h[f])) |
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368 |
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369 if not name: |
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370 exts = listexts(_('enabled extensions:'), extensions.enabled()) |
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371 if exts: |
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372 rst.append('\n') |
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373 rst.extend(exts) |
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374 |
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375 rst.append(_("\nadditional help topics:\n\n")) |
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376 topics = [] |
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377 for names, header, doc in helptable: |
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378 topics.append((names[0], header)) |
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379 for t, desc in topics: |
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380 rst.append(" :%s: %s\n" % (t, desc)) |
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381 |
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382 if ui.quiet: |
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383 pass |
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384 elif ui.verbose: |
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385 rst.append('\n%s\n' % optrst(_("global options"), |
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386 commands.globalopts, ui.verbose)) |
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387 if name == 'shortlist': |
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388 rst.append(_('\n(use "hg help" for the full list ' |
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389 'of commands)\n')) |
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390 else: |
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391 if name == 'shortlist': |
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392 rst.append(_('\n(use "hg help" for the full list of commands ' |
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393 'or "hg -v" for details)\n')) |
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394 elif name and not full: |
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395 rst.append(_('\n(use "hg help %s" to show the full help ' |
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396 'text)\n') % name) |
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397 elif name and cmds and name in cmds.keys(): |
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398 rst.append(_('\n(use "hg help -v -e %s" to show built-in ' |
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399 'aliases and global options)\n') % name) |
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400 else: |
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401 rst.append(_('\n(use "hg help -v%s" to show built-in aliases ' |
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402 'and global options)\n') |
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403 % (name and " " + name or "")) |
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404 return rst |
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405 |
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406 def helptopic(name): |
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407 for names, header, doc in helptable: |
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408 if name in names: |
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409 break |
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410 else: |
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411 raise error.UnknownCommand(name) |
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412 |
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413 rst = [minirst.section(header)] |
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414 |
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415 # description |
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416 if not doc: |
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417 rst.append(" %s\n" % _("(no help text available)")) |
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418 if callable(doc): |
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419 rst += [" %s\n" % l for l in doc(ui).splitlines()] |
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420 |
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421 if not ui.verbose: |
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422 omitted = _('(some details hidden, use --verbose' |
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423 ' to show complete help)') |
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424 indicateomitted(rst, omitted) |
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425 |
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426 try: |
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427 cmdutil.findcmd(name, commands.table) |
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428 rst.append(_('\nuse "hg help -c %s" to see help for ' |
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429 'the %s command\n') % (name, name)) |
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430 except error.UnknownCommand: |
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431 pass |
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432 return rst |
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433 |
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434 def helpext(name): |
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435 try: |
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436 mod = extensions.find(name) |
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437 doc = gettext(mod.__doc__) or _('no help text available') |
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438 except KeyError: |
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439 mod = None |
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440 doc = extensions.disabledext(name) |
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441 if not doc: |
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442 raise error.UnknownCommand(name) |
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443 |
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444 if '\n' not in doc: |
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445 head, tail = doc, "" |
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446 else: |
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447 head, tail = doc.split('\n', 1) |
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448 rst = [_('%s extension - %s\n\n') % (name.split('.')[-1], head)] |
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449 if tail: |
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450 rst.extend(tail.splitlines(True)) |
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451 rst.append('\n') |
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452 |
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453 if not ui.verbose: |
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454 omitted = _('(some details hidden, use --verbose' |
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455 ' to show complete help)') |
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456 indicateomitted(rst, omitted) |
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457 |
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458 if mod: |
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459 try: |
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460 ct = mod.cmdtable |
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461 except AttributeError: |
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462 ct = {} |
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463 modcmds = set([c.split('|', 1)[0] for c in ct]) |
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464 rst.extend(helplist(modcmds.__contains__)) |
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465 else: |
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466 rst.append(_('(use "hg help extensions" for information on enabling' |
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467 ' extensions)\n')) |
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468 return rst |
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469 |
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470 def helpextcmd(name): |
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471 cmd, ext, mod = extensions.disabledcmd(ui, name, |
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472 ui.configbool('ui', 'strict')) |
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473 doc = gettext(mod.__doc__).splitlines()[0] |
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474 |
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475 rst = listexts(_("'%s' is provided by the following " |
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476 "extension:") % cmd, {ext: doc}, indent=4) |
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477 rst.append('\n') |
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478 rst.append(_('(use "hg help extensions" for information on enabling ' |
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479 'extensions)\n')) |
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480 return rst |
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481 |
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482 |
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483 rst = [] |
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484 kw = opts.get('keyword') |
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485 if kw: |
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486 matches = topicmatch(ui, name) |
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487 helpareas = [] |
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488 if opts.get('extension'): |
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489 helpareas += [('extensions', _('Extensions'))] |
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490 if opts.get('command'): |
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491 helpareas += [('commands', _('Commands'))] |
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492 if not helpareas: |
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493 helpareas = [('topics', _('Topics')), |
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494 ('commands', _('Commands')), |
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495 ('extensions', _('Extensions')), |
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496 ('extensioncommands', _('Extension Commands'))] |
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497 for t, title in helpareas: |
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498 if matches[t]: |
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499 rst.append('%s:\n\n' % title) |
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500 rst.extend(minirst.maketable(sorted(matches[t]), 1)) |
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501 rst.append('\n') |
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502 if not rst: |
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503 msg = _('no matches') |
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504 hint = _('try "hg help" for a list of topics') |
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505 raise error.Abort(msg, hint=hint) |
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506 elif name and name != 'shortlist': |
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507 queries = [] |
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508 if unknowncmd: |
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509 queries += [helpextcmd] |
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510 if opts.get('extension'): |
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511 queries += [helpext] |
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512 if opts.get('command'): |
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513 queries += [helpcmd] |
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514 if not queries: |
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515 queries = (helptopic, helpcmd, helpext, helpextcmd) |
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516 for f in queries: |
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517 try: |
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518 rst = f(name) |
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519 break |
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520 except error.UnknownCommand: |
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521 pass |
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522 else: |
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523 if unknowncmd: |
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524 raise error.UnknownCommand(name) |
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525 else: |
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526 msg = _('no such help topic: %s') % name |
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527 hint = _('try "hg help --keyword %s"') % name |
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528 raise error.Abort(msg, hint=hint) |
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529 else: |
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530 # program name |
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531 if not ui.quiet: |
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532 rst = [_("Mercurial Distributed SCM\n"), '\n'] |
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533 rst.extend(helplist()) |
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534 |
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535 return ''.join(rst) |