forked from lix-project/lix
Improve nix show-config --json
In particular, show descriptions. This could be used for manpage generation etc.
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parent
4410e9d995
commit
efa4bdbfcd
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@ -89,6 +89,11 @@ template<> std::string BaseSetting<SandboxMode>::to_string()
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else abort();
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}
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template<> void BaseSetting<SandboxMode>::toJSON(JSONPlaceholder & out)
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{
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AbstractSetting::toJSON(out);
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}
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void MaxBuildJobsSetting::set(const std::string & str)
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{
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if (str == "auto") value = std::max(1U, std::thread::hardware_concurrency());
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@ -1,5 +1,6 @@
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#include "config.hh"
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#include "args.hh"
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#include "json.hh"
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namespace nix {
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@ -103,6 +104,17 @@ void Config::resetOverriden()
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s.second.setting->overriden = false;
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}
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void Config::toJSON(JSONObject & out)
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{
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for (auto & s : _settings)
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if (!s.second.isAlias) {
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JSONObject out2(out.object(s.first));
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out2.attr("description", s.second.setting->description);
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JSONPlaceholder out3(out2.placeholder("value"));
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s.second.setting->toJSON(out3);
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}
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}
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AbstractSetting::AbstractSetting(
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const std::string & name,
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const std::string & description,
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@ -111,6 +123,17 @@ AbstractSetting::AbstractSetting(
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{
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}
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void AbstractSetting::toJSON(JSONPlaceholder & out)
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{
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out.write(to_string());
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}
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template<typename T>
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void BaseSetting<T>::toJSON(JSONPlaceholder & out)
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{
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out.write(value);
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}
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template<> void BaseSetting<std::string>::set(const std::string & str)
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{
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value = str;
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@ -161,6 +184,13 @@ template<> std::string BaseSetting<Strings>::to_string()
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return concatStringsSep(" ", value);
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}
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template<> void BaseSetting<Strings>::toJSON(JSONPlaceholder & out)
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{
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JSONList list(out.list());
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for (auto & s : value)
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list.elem(s);
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}
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template<> void BaseSetting<StringSet>::set(const std::string & str)
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{
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value = tokenizeString<StringSet>(str);
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@ -171,12 +201,20 @@ template<> std::string BaseSetting<StringSet>::to_string()
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return concatStringsSep(" ", value);
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}
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template<> void BaseSetting<StringSet>::toJSON(JSONPlaceholder & out)
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{
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JSONList list(out.list());
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for (auto & s : value)
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list.elem(s);
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}
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template class BaseSetting<int>;
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template class BaseSetting<unsigned int>;
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template class BaseSetting<long>;
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template class BaseSetting<unsigned long>;
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template class BaseSetting<long long>;
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template class BaseSetting<unsigned long long>;
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template class BaseSetting<bool>;
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void PathSetting::set(const std::string & str)
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{
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@ -9,6 +9,8 @@ namespace nix {
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class Args;
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class AbstractSetting;
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class JSONPlaceholder;
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class JSONObject;
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/* A class to simplify providing configuration settings. The typical
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use is to inherit Config and add Setting<T> members:
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@ -56,6 +58,8 @@ public:
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void applyConfigFile(const Path & path, bool fatal = false);
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void resetOverriden();
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void toJSON(JSONObject & out);
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};
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class AbstractSetting
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@ -90,6 +94,8 @@ protected:
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virtual std::string to_string() = 0;
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virtual void toJSON(JSONPlaceholder & out);
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bool isOverriden() { return overriden; }
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};
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@ -122,6 +128,8 @@ public:
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void set(const std::string & str) override;
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std::string to_string() override;
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void toJSON(JSONPlaceholder & out) override;
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};
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template<typename T>
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@ -19,51 +19,34 @@ void toJSON(std::ostream & str, const char * start, const char * end)
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str << '"';
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}
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void toJSON(std::ostream & str, const std::string & s)
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{
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toJSON(str, s.c_str(), s.c_str() + s.size());
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}
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void toJSON(std::ostream & str, const char * s)
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{
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if (!s) str << "null"; else toJSON(str, s, s + strlen(s));
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}
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void toJSON(std::ostream & str, unsigned long long n)
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template<> void toJSON<int>(std::ostream & str, const int & n) { str << n; }
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template<> void toJSON<unsigned int>(std::ostream & str, const unsigned int & n) { str << n; }
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template<> void toJSON<long>(std::ostream & str, const long & n) { str << n; }
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template<> void toJSON<unsigned long>(std::ostream & str, const unsigned long & n) { str << n; }
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template<> void toJSON<long long>(std::ostream & str, const long long & n) { str << n; }
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template<> void toJSON<unsigned long long>(std::ostream & str, const unsigned long long & n) { str << n; }
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template<> void toJSON<float>(std::ostream & str, const float & n) { str << n; }
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template<> void toJSON<std::string>(std::ostream & str, const std::string & s)
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{
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str << n;
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toJSON(str, s.c_str(), s.c_str() + s.size());
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}
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void toJSON(std::ostream & str, unsigned long n)
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{
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str << n;
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}
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void toJSON(std::ostream & str, long n)
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{
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str << n;
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}
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void toJSON(std::ostream & str, unsigned int n)
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{
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str << n;
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}
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void toJSON(std::ostream & str, int n)
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{
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str << n;
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}
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void toJSON(std::ostream & str, double f)
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{
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str << f;
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}
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void toJSON(std::ostream & str, bool b)
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template<> void toJSON<bool>(std::ostream & str, const bool & b)
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{
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str << (b ? "true" : "false");
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}
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template<> void toJSON<std::nullptr_t>(std::ostream & str, const std::nullptr_t & b)
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{
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str << "null";
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}
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JSONWriter::JSONWriter(std::ostream & str, bool indent)
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: state(new JSONState(str, indent))
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{
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@ -7,15 +7,10 @@
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namespace nix {
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void toJSON(std::ostream & str, const char * start, const char * end);
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void toJSON(std::ostream & str, const std::string & s);
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void toJSON(std::ostream & str, const char * s);
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void toJSON(std::ostream & str, unsigned long long n);
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void toJSON(std::ostream & str, unsigned long n);
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void toJSON(std::ostream & str, long n);
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void toJSON(std::ostream & str, unsigned int n);
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void toJSON(std::ostream & str, int n);
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void toJSON(std::ostream & str, double f);
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void toJSON(std::ostream & str, bool b);
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template<typename T>
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void toJSON(std::ostream & str, const T & n);
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class JSONWriter
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{
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@ -31,8 +31,7 @@ struct CmdShowConfig : Command
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if (json) {
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// FIXME: use appropriate JSON types (bool, ints, etc).
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JSONObject jsonObj(std::cout, true);
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for (auto & s : settings.getSettings())
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jsonObj.attr(s.first, s.second);
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settings.toJSON(jsonObj);
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} else {
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for (auto & s : settings.getSettings())
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std::cout << s.first + " = " + s.second + "\n";
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