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-rw-r--r--third_party/nix/src/libutil/config.cc466
1 files changed, 220 insertions, 246 deletions
diff --git a/third_party/nix/src/libutil/config.cc b/third_party/nix/src/libutil/config.cc
index 9023cb1bb6de..d737945924e8 100644
--- a/third_party/nix/src/libutil/config.cc
+++ b/third_party/nix/src/libutil/config.cc
@@ -4,268 +4,251 @@
 
 namespace nix {
 
-bool Config::set(const std::string & name, const std::string & value)
-{
-    auto i = _settings.find(name);
-    if (i == _settings.end()) return false;
-    i->second.setting->set(value);
-    i->second.setting->overriden = true;
-    return true;
-}
-
-void Config::addSetting(AbstractSetting * setting)
-{
-    _settings.emplace(setting->name, Config::SettingData(false, setting));
-    for (auto & alias : setting->aliases)
-        _settings.emplace(alias, Config::SettingData(true, setting));
-
-    bool set = false;
-
-    auto i = unknownSettings.find(setting->name);
+bool Config::set(const std::string& name, const std::string& value) {
+  auto i = _settings.find(name);
+  if (i == _settings.end()) return false;
+  i->second.setting->set(value);
+  i->second.setting->overriden = true;
+  return true;
+}
+
+void Config::addSetting(AbstractSetting* setting) {
+  _settings.emplace(setting->name, Config::SettingData(false, setting));
+  for (auto& alias : setting->aliases)
+    _settings.emplace(alias, Config::SettingData(true, setting));
+
+  bool set = false;
+
+  auto i = unknownSettings.find(setting->name);
+  if (i != unknownSettings.end()) {
+    setting->set(i->second);
+    setting->overriden = true;
+    unknownSettings.erase(i);
+    set = true;
+  }
+
+  for (auto& alias : setting->aliases) {
+    auto i = unknownSettings.find(alias);
     if (i != unknownSettings.end()) {
+      if (set)
+        warn("setting '%s' is set, but it's an alias of '%s' which is also set",
+             alias, setting->name);
+      else {
         setting->set(i->second);
         setting->overriden = true;
         unknownSettings.erase(i);
         set = true;
+      }
     }
-
-    for (auto & alias : setting->aliases) {
-        auto i = unknownSettings.find(alias);
-        if (i != unknownSettings.end()) {
-            if (set)
-                warn("setting '%s' is set, but it's an alias of '%s' which is also set",
-                    alias, setting->name);
-            else {
-                setting->set(i->second);
-                setting->overriden = true;
-                unknownSettings.erase(i);
-                set = true;
-            }
-        }
-    }
+  }
 }
 
-void AbstractConfig::warnUnknownSettings()
-{
-    for (auto & s : unknownSettings)
-        warn("unknown setting '%s'", s.first);
+void AbstractConfig::warnUnknownSettings() {
+  for (auto& s : unknownSettings) warn("unknown setting '%s'", s.first);
 }
 
-void AbstractConfig::reapplyUnknownSettings()
-{
-    auto unknownSettings2 = std::move(unknownSettings);
-    for (auto & s : unknownSettings2)
-        set(s.first, s.second);
+void AbstractConfig::reapplyUnknownSettings() {
+  auto unknownSettings2 = std::move(unknownSettings);
+  for (auto& s : unknownSettings2) set(s.first, s.second);
 }
 
-void Config::getSettings(std::map<std::string, SettingInfo> & res, bool overridenOnly)
-{
-    for (auto & opt : _settings)
-        if (!opt.second.isAlias && (!overridenOnly || opt.second.setting->overriden))
-            res.emplace(opt.first, SettingInfo{opt.second.setting->to_string(), opt.second.setting->description});
+void Config::getSettings(std::map<std::string, SettingInfo>& res,
+                         bool overridenOnly) {
+  for (auto& opt : _settings)
+    if (!opt.second.isAlias &&
+        (!overridenOnly || opt.second.setting->overriden))
+      res.emplace(opt.first, SettingInfo{opt.second.setting->to_string(),
+                                         opt.second.setting->description});
 }
 
-void AbstractConfig::applyConfigFile(const Path & path)
-{
-    try {
-        string contents = readFile(path);
-
-        unsigned int pos = 0;
-
-        while (pos < contents.size()) {
-            string line;
-            while (pos < contents.size() && contents[pos] != '\n')
-                line += contents[pos++];
-            pos++;
-
-            string::size_type hash = line.find('#');
-            if (hash != string::npos)
-                line = string(line, 0, hash);
-
-            vector<string> tokens = tokenizeString<vector<string> >(line);
-            if (tokens.empty()) continue;
-
-            if (tokens.size() < 2)
-                throw UsageError("illegal configuration line '%1%' in '%2%'", line, path);
-
-            auto include = false;
-            auto ignoreMissing = false;
-            if (tokens[0] == "include")
-                include = true;
-            else if (tokens[0] == "!include") {
-                include = true;
-                ignoreMissing = true;
-            }
-
-            if (include) {
-                if (tokens.size() != 2)
-                    throw UsageError("illegal configuration line '%1%' in '%2%'", line, path);
-                auto p = absPath(tokens[1], dirOf(path));
-                if (pathExists(p)) {
-                    applyConfigFile(p);
-                } else if (!ignoreMissing) {
-                    throw Error("file '%1%' included from '%2%' not found", p, path);
-                }
-                continue;
-            }
-
-            if (tokens[1] != "=")
-                throw UsageError("illegal configuration line '%1%' in '%2%'", line, path);
-
-            string name = tokens[0];
-
-            vector<string>::iterator i = tokens.begin();
-            advance(i, 2);
-
-            set(name, concatStringsSep(" ", Strings(i, tokens.end()))); // FIXME: slow
-        };
-    } catch (SysError &) { }
-}
+void AbstractConfig::applyConfigFile(const Path& path) {
+  try {
+    string contents = readFile(path);
 
-void Config::resetOverriden()
-{
-    for (auto & s : _settings)
-        s.second.setting->overriden = false;
-}
+    unsigned int pos = 0;
+
+    while (pos < contents.size()) {
+      string line;
+      while (pos < contents.size() && contents[pos] != '\n')
+        line += contents[pos++];
+      pos++;
+
+      string::size_type hash = line.find('#');
+      if (hash != string::npos) line = string(line, 0, hash);
+
+      vector<string> tokens = tokenizeString<vector<string> >(line);
+      if (tokens.empty()) continue;
+
+      if (tokens.size() < 2)
+        throw UsageError("illegal configuration line '%1%' in '%2%'", line,
+                         path);
 
-void Config::toJSON(JSONObject & out)
-{
-    for (auto & s : _settings)
-        if (!s.second.isAlias) {
-            JSONObject out2(out.object(s.first));
-            out2.attr("description", s.second.setting->description);
-            JSONPlaceholder out3(out2.placeholder("value"));
-            s.second.setting->toJSON(out3);
+      auto include = false;
+      auto ignoreMissing = false;
+      if (tokens[0] == "include")
+        include = true;
+      else if (tokens[0] == "!include") {
+        include = true;
+        ignoreMissing = true;
+      }
+
+      if (include) {
+        if (tokens.size() != 2)
+          throw UsageError("illegal configuration line '%1%' in '%2%'", line,
+                           path);
+        auto p = absPath(tokens[1], dirOf(path));
+        if (pathExists(p)) {
+          applyConfigFile(p);
+        } else if (!ignoreMissing) {
+          throw Error("file '%1%' included from '%2%' not found", p, path);
         }
-}
+        continue;
+      }
+
+      if (tokens[1] != "=")
+        throw UsageError("illegal configuration line '%1%' in '%2%'", line,
+                         path);
 
-void Config::convertToArgs(Args & args, const std::string & category)
-{
-    for (auto & s : _settings)
-        if (!s.second.isAlias)
-            s.second.setting->convertToArg(args, category);
+      string name = tokens[0];
+
+      vector<string>::iterator i = tokens.begin();
+      advance(i, 2);
+
+      set(name,
+          concatStringsSep(" ", Strings(i, tokens.end())));  // FIXME: slow
+    };
+  } catch (SysError&) {
+  }
 }
 
-AbstractSetting::AbstractSetting(
-    const std::string & name,
-    const std::string & description,
-    const std::set<std::string> & aliases)
-    : name(name), description(description), aliases(aliases)
-{
+void Config::resetOverriden() {
+  for (auto& s : _settings) s.second.setting->overriden = false;
 }
 
-void AbstractSetting::toJSON(JSONPlaceholder & out)
-{
-    out.write(to_string());
+void Config::toJSON(JSONObject& out) {
+  for (auto& s : _settings)
+    if (!s.second.isAlias) {
+      JSONObject out2(out.object(s.first));
+      out2.attr("description", s.second.setting->description);
+      JSONPlaceholder out3(out2.placeholder("value"));
+      s.second.setting->toJSON(out3);
+    }
 }
 
-void AbstractSetting::convertToArg(Args & args, const std::string & category)
-{
+void Config::convertToArgs(Args& args, const std::string& category) {
+  for (auto& s : _settings)
+    if (!s.second.isAlias) s.second.setting->convertToArg(args, category);
 }
 
-template<typename T>
-void BaseSetting<T>::toJSON(JSONPlaceholder & out)
-{
-    out.write(value);
+AbstractSetting::AbstractSetting(const std::string& name,
+                                 const std::string& description,
+                                 const std::set<std::string>& aliases)
+    : name(name), description(description), aliases(aliases) {}
+
+void AbstractSetting::toJSON(JSONPlaceholder& out) { out.write(to_string()); }
+
+void AbstractSetting::convertToArg(Args& args, const std::string& category) {}
+
+template <typename T>
+void BaseSetting<T>::toJSON(JSONPlaceholder& out) {
+  out.write(value);
 }
 
-template<typename T>
-void BaseSetting<T>::convertToArg(Args & args, const std::string & category)
-{
-    args.mkFlag()
-        .longName(name)
-        .description(description)
-        .arity(1)
-        .handler([=](std::vector<std::string> ss) { overriden = true; set(ss[0]); })
-        .category(category);
+template <typename T>
+void BaseSetting<T>::convertToArg(Args& args, const std::string& category) {
+  args.mkFlag()
+      .longName(name)
+      .description(description)
+      .arity(1)
+      .handler([=](std::vector<std::string> ss) {
+        overriden = true;
+        set(ss[0]);
+      })
+      .category(category);
 }
 
-template<> void BaseSetting<std::string>::set(const std::string & str)
-{
-    value = str;
+template <>
+void BaseSetting<std::string>::set(const std::string& str) {
+  value = str;
 }
 
-template<> std::string BaseSetting<std::string>::to_string()
-{
-    return value;
+template <>
+std::string BaseSetting<std::string>::to_string() {
+  return value;
 }
 
-template<typename T>
-void BaseSetting<T>::set(const std::string & str)
-{
-    static_assert(std::is_integral<T>::value, "Integer required.");
-    if (!string2Int(str, value))
-        throw UsageError("setting '%s' has invalid value '%s'", name, str);
+template <typename T>
+void BaseSetting<T>::set(const std::string& str) {
+  static_assert(std::is_integral<T>::value, "Integer required.");
+  if (!string2Int(str, value))
+    throw UsageError("setting '%s' has invalid value '%s'", name, str);
 }
 
-template<typename T>
-std::string BaseSetting<T>::to_string()
-{
-    static_assert(std::is_integral<T>::value, "Integer required.");
-    return std::to_string(value);
+template <typename T>
+std::string BaseSetting<T>::to_string() {
+  static_assert(std::is_integral<T>::value, "Integer required.");
+  return std::to_string(value);
 }
 
-template<> void BaseSetting<bool>::set(const std::string & str)
-{
-    if (str == "true" || str == "yes" || str == "1")
-        value = true;
-    else if (str == "false" || str == "no" || str == "0")
-        value = false;
-    else
-        throw UsageError("Boolean setting '%s' has invalid value '%s'", name, str);
+template <>
+void BaseSetting<bool>::set(const std::string& str) {
+  if (str == "true" || str == "yes" || str == "1")
+    value = true;
+  else if (str == "false" || str == "no" || str == "0")
+    value = false;
+  else
+    throw UsageError("Boolean setting '%s' has invalid value '%s'", name, str);
 }
 
-template<> std::string BaseSetting<bool>::to_string()
-{
-    return value ? "true" : "false";
+template <>
+std::string BaseSetting<bool>::to_string() {
+  return value ? "true" : "false";
 }
 
-template<> void BaseSetting<bool>::convertToArg(Args & args, const std::string & category)
-{
-    args.mkFlag()
-        .longName(name)
-        .description(description)
-        .handler([=](std::vector<std::string> ss) { override(true); })
-        .category(category);
-    args.mkFlag()
-        .longName("no-" + name)
-        .description(description)
-        .handler([=](std::vector<std::string> ss) { override(false); })
-        .category(category);
+template <>
+void BaseSetting<bool>::convertToArg(Args& args, const std::string& category) {
+  args.mkFlag()
+      .longName(name)
+      .description(description)
+      .handler([=](std::vector<std::string> ss) { override(true); })
+      .category(category);
+  args.mkFlag()
+      .longName("no-" + name)
+      .description(description)
+      .handler([=](std::vector<std::string> ss) { override(false); })
+      .category(category);
 }
 
-template<> void BaseSetting<Strings>::set(const std::string & str)
-{
-    value = tokenizeString<Strings>(str);
+template <>
+void BaseSetting<Strings>::set(const std::string& str) {
+  value = tokenizeString<Strings>(str);
 }
 
-template<> std::string BaseSetting<Strings>::to_string()
-{
-    return concatStringsSep(" ", value);
+template <>
+std::string BaseSetting<Strings>::to_string() {
+  return concatStringsSep(" ", value);
 }
 
-template<> void BaseSetting<Strings>::toJSON(JSONPlaceholder & out)
-{
-    JSONList list(out.list());
-    for (auto & s : value)
-        list.elem(s);
+template <>
+void BaseSetting<Strings>::toJSON(JSONPlaceholder& out) {
+  JSONList list(out.list());
+  for (auto& s : value) list.elem(s);
 }
 
-template<> void BaseSetting<StringSet>::set(const std::string & str)
-{
-    value = tokenizeString<StringSet>(str);
+template <>
+void BaseSetting<StringSet>::set(const std::string& str) {
+  value = tokenizeString<StringSet>(str);
 }
 
-template<> std::string BaseSetting<StringSet>::to_string()
-{
-    return concatStringsSep(" ", value);
+template <>
+std::string BaseSetting<StringSet>::to_string() {
+  return concatStringsSep(" ", value);
 }
 
-template<> void BaseSetting<StringSet>::toJSON(JSONPlaceholder & out)
-{
-    JSONList list(out.list());
-    for (auto & s : value)
-        list.elem(s);
+template <>
+void BaseSetting<StringSet>::toJSON(JSONPlaceholder& out) {
+  JSONList list(out.list());
+  for (auto& s : value) list.elem(s);
 }
 
 template class BaseSetting<int>;
@@ -279,60 +262,51 @@ template class BaseSetting<std::string>;
 template class BaseSetting<Strings>;
 template class BaseSetting<StringSet>;
 
-void PathSetting::set(const std::string & str)
-{
-    if (str == "") {
-        if (allowEmpty)
-            value = "";
-        else
-            throw UsageError("setting '%s' cannot be empty", name);
-    } else
-        value = canonPath(str);
+void PathSetting::set(const std::string& str) {
+  if (str == "") {
+    if (allowEmpty)
+      value = "";
+    else
+      throw UsageError("setting '%s' cannot be empty", name);
+  } else
+    value = canonPath(str);
 }
 
-bool GlobalConfig::set(const std::string & name, const std::string & value)
-{
-    for (auto & config : *configRegistrations)
-        if (config->set(name, value)) return true;
+bool GlobalConfig::set(const std::string& name, const std::string& value) {
+  for (auto& config : *configRegistrations)
+    if (config->set(name, value)) return true;
 
-    unknownSettings.emplace(name, value);
+  unknownSettings.emplace(name, value);
 
-    return false;
+  return false;
 }
 
-void GlobalConfig::getSettings(std::map<std::string, SettingInfo> & res, bool overridenOnly)
-{
-    for (auto & config : *configRegistrations)
-        config->getSettings(res, overridenOnly);
+void GlobalConfig::getSettings(std::map<std::string, SettingInfo>& res,
+                               bool overridenOnly) {
+  for (auto& config : *configRegistrations)
+    config->getSettings(res, overridenOnly);
 }
 
-void GlobalConfig::resetOverriden()
-{
-    for (auto & config : *configRegistrations)
-        config->resetOverriden();
+void GlobalConfig::resetOverriden() {
+  for (auto& config : *configRegistrations) config->resetOverriden();
 }
 
-void GlobalConfig::toJSON(JSONObject & out)
-{
-    for (auto & config : *configRegistrations)
-        config->toJSON(out);
+void GlobalConfig::toJSON(JSONObject& out) {
+  for (auto& config : *configRegistrations) config->toJSON(out);
 }
 
-void GlobalConfig::convertToArgs(Args & args, const std::string & category)
-{
-    for (auto & config : *configRegistrations)
-        config->convertToArgs(args, category);
+void GlobalConfig::convertToArgs(Args& args, const std::string& category) {
+  for (auto& config : *configRegistrations)
+    config->convertToArgs(args, category);
 }
 
 GlobalConfig globalConfig;
 
-GlobalConfig::ConfigRegistrations * GlobalConfig::configRegistrations;
+GlobalConfig::ConfigRegistrations* GlobalConfig::configRegistrations;
 
-GlobalConfig::Register::Register(Config * config)
-{
-    if (!configRegistrations)
-        configRegistrations = new ConfigRegistrations;
-    configRegistrations->emplace_back(config);
+GlobalConfig::Register::Register(Config* config) {
+  if (!configRegistrations) configRegistrations = new ConfigRegistrations;
+  configRegistrations->emplace_back(config);
 }
 
-}
+}  // namespace nix