1fc74afbba
Instead of needing to run `nix show-config --json | jq -r '."warn-dirty".value'` to view the value of `warn-dirty`, you can now run `nix show-config warn-dirty`.
60 lines
1.5 KiB
C++
60 lines
1.5 KiB
C++
#include "command.hh"
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#include "common-args.hh"
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#include "shared.hh"
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#include "store-api.hh"
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#include <nlohmann/json.hpp>
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using namespace nix;
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struct CmdShowConfig : Command, MixJSON
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{
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std::optional<std::string> name;
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CmdShowConfig() {
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expectArgs({
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.label = {"name"},
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.optional = true,
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.handler = {&name},
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});
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}
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std::string description() override
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{
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return "show the Nix configuration or the value of a specific setting";
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}
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Category category() override { return catUtility; }
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void run() override
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{
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if (name) {
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if (json) {
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throw UsageError("'--json' is not supported when specifying a setting name");
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}
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std::map<std::string, Config::SettingInfo> settings;
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globalConfig.getSettings(settings);
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auto setting = settings.find(*name);
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if (setting == settings.end()) {
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throw Error("could not find setting '%1%'", *name);
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} else {
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const auto & value = setting->second.value;
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logger->cout("%s", value);
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}
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return;
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}
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if (json) {
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// FIXME: use appropriate JSON types (bool, ints, etc).
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logger->cout("%s", globalConfig.toJSON().dump());
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} else {
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logger->cout("%s", globalConfig.toKeyValue());
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}
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}
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};
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static auto rShowConfig = registerCommand<CmdShowConfig>("show-config");
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