diff options
Diffstat (limited to 'third_party/nix/src/libutil/config.cc')
| -rw-r--r-- | third_party/nix/src/libutil/config.cc | 370 |
1 files changed, 0 insertions, 370 deletions
diff --git a/third_party/nix/src/libutil/config.cc b/third_party/nix/src/libutil/config.cc deleted file mode 100644 index 7c6e7af48752..000000000000 --- a/third_party/nix/src/libutil/config.cc +++ /dev/null @@ -1,370 +0,0 @@ -#include "libutil/config.hh" - -#include <string> -#include <utility> -#include <vector> - -#include <absl/strings/numbers.h> -#include <absl/strings/str_split.h> -#include <absl/strings/string_view.h> -#include <glog/logging.h> - -#include "libutil/args.hh" -#include "libutil/json.hh" - -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); - 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) { - LOG(WARNING) << "setting '" << alias - << "' is set, but it's an alias of '" << setting->name - << "', which is also set"; - } - - else { - setting->set(i->second); - setting->overriden = true; - unknownSettings.erase(i); - set = true; - } - } - } -} - -void AbstractConfig::warnUnknownSettings() { - for (auto& s : unknownSettings) { - LOG(WARNING) << "unknown setting: " << s.first; - } -} - -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 AbstractConfig::applyConfigFile(const Path& path) { - try { - std::string contents = readFile(path); - - unsigned int pos = 0; - - while (pos < contents.size()) { - std::string line; - while (pos < contents.size() && contents[pos] != '\n') { - line += contents[pos++]; - } - pos++; - - std::string::size_type hash = line.find('#'); - if (hash != std::string::npos) { - line = std::string(line, 0, hash); - } - - // TODO(tazjin): absl::string_view after path functions are fixed. - std::vector<std::string> tokens = absl::StrSplit( - line, absl::ByAnyChar(" \t\n\r"), absl::SkipWhitespace()); - 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); - } - - std::string name = tokens[0]; - - auto i = tokens.begin(); - advance(i, 2); - - set(name, - concatStringsSep(" ", Strings(i, tokens.end()))); // FIXME: slow - }; - } catch (SysError&) { - } -} - -void Config::resetOverriden() { - for (auto& s : _settings) { - s.second.setting->overriden = false; - } -} - -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 Config::convertToArgs(Args& args, const std::string& category) { - for (auto& s : _settings) { - if (!s.second.isAlias) { - s.second.setting->convertToArg(args, category); - } - } -} - -AbstractSetting::AbstractSetting(std::string name, std::string description, - std::set<std::string> aliases) - : name(std::move(name)), - description(std::move(description)), - aliases(std::move(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 <> -void BaseSetting<std::string>::set(const std::string& str) { - value = str; -} - -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 (!absl::SimpleAtoi(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 <> -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 <> -void BaseSetting<bool>::convertToArg(Args& args, const std::string& category) { - args.mkFlag() - .longName(name) - .description(description) - .handler([=](const std::vector<std::string>& ss) { override(true); }) - .category(category); - args.mkFlag() - .longName("no-" + name) - .description(description) - .handler([=](const std::vector<std::string>& ss) { override(false); }) - .category(category); -} - -template <> -void BaseSetting<Strings>::set(const std::string& str) { - value = absl::StrSplit(str, absl::ByAnyChar(" \t\n\r"), absl::SkipEmpty()); -} - -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<StringSet>::set(const std::string& str) { - value = absl::StrSplit(str, absl::ByAnyChar(" \t\n\r"), absl::SkipEmpty()); -} - -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 class BaseSetting<int>; -template class BaseSetting<unsigned int>; -template class BaseSetting<long>; -template class BaseSetting<unsigned long>; -template class BaseSetting<long long>; -template class BaseSetting<unsigned long long>; -template class BaseSetting<bool>; -template class BaseSetting<std::string>; -template class BaseSetting<Strings>; -template class BaseSetting<StringSet>; - -void PathSetting::set(const std::string& str) { - if (str.empty()) { - 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; - } - } - - unknownSettings.emplace(name, value); - - return false; -} - -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::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); - } -} - -GlobalConfig globalConfig; - -GlobalConfig::ConfigRegistrations* GlobalConfig::configRegistrations; - -GlobalConfig::Register::Register(Config* config) { - if (configRegistrations == nullptr) { - configRegistrations = new ConfigRegistrations; - } - configRegistrations->emplace_back(config); -} - -} // namespace nix |