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nix: Add --help-config flag
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commit
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3 changed files with 30 additions and 2 deletions
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@ -41,7 +41,7 @@ protected:
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virtual bool processFlag(Strings::iterator & pos, Strings::iterator end);
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void printFlags(std::ostream & out);
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virtual void printFlags(std::ostream & out);
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/* Positional arguments. */
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struct ExpectedArg
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@ -31,6 +31,8 @@ class Config
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{
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friend class AbstractSetting;
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public:
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struct SettingData
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{
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bool isAlias;
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@ -40,7 +42,11 @@ class Config
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{ }
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};
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std::map<std::string, SettingData> _settings;
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typedef std::map<std::string, SettingData> Settings;
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private:
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Settings _settings;
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StringMap initials;
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@ -58,6 +64,8 @@ public:
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StringMap getSettings(bool overridenOnly = false);
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const Settings & _getSettings() { return _settings; }
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void applyConfigFile(const Path & path, bool fatal = false);
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void resetOverriden();
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@ -21,10 +21,30 @@ struct NixArgs : virtual MultiCommand, virtual MixCommonArgs
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throw Exit();
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});
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mkFlag(0, "help-config", "show configuration options", [=]() {
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std::cout << "The following configuration options are available:\n\n";
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Table2 tbl;
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for (const auto & s : settings._getSettings())
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if (!s.second.isAlias)
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tbl.emplace_back(s.first, s.second.setting->description);
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printTable(std::cout, tbl);
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throw Exit();
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});
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mkFlag(0, "version", "show version information", std::bind(printVersion, programName));
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settings.convertToArgs(*this);
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}
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void printFlags(std::ostream & out) override
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{
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Args::printFlags(out);
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std::cout <<
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"\n"
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"In addition, most configuration settings can be overriden using ‘--<name> <value>’.\n"
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"Boolean settings can be overriden using ‘--<name>’ or ‘--no-<name>’. See ‘nix\n"
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"--help-config’ for a list of configuration settings.\n";
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}
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};
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void mainWrapped(int argc, char * * argv)
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