forked from lix-project/lix
87 lines
2.3 KiB
C++
87 lines
2.3 KiB
C++
#include <algorithm>
|
||
|
||
#include "command.hh"
|
||
#include "common-args.hh"
|
||
#include "eval.hh"
|
||
#include "globals.hh"
|
||
#include "legacy.hh"
|
||
#include "shared.hh"
|
||
#include "store-api.hh"
|
||
#include "progress-bar.hh"
|
||
|
||
namespace nix {
|
||
|
||
struct NixArgs : virtual MultiCommand, virtual MixCommonArgs
|
||
{
|
||
NixArgs() : MultiCommand(*RegisterCommand::commands), MixCommonArgs("nix")
|
||
{
|
||
mkFlag('h', "help", "show usage information", [=]() {
|
||
printHelp(programName, std::cout);
|
||
std::cout << "\nNote: this program is EXPERIMENTAL and subject to change.\n";
|
||
throw Exit();
|
||
});
|
||
|
||
mkFlag(0, "help-config", "show configuration options", [=]() {
|
||
std::cout << "The following configuration options are available:\n\n";
|
||
Table2 tbl;
|
||
for (const auto & s : settings._getSettings())
|
||
if (!s.second.isAlias)
|
||
tbl.emplace_back(s.first, s.second.setting->description);
|
||
printTable(std::cout, tbl);
|
||
throw Exit();
|
||
});
|
||
|
||
mkFlag(0, "version", "show version information", std::bind(printVersion, programName));
|
||
|
||
std::string cat = "config";
|
||
settings.convertToArgs(*this, cat);
|
||
hiddenCategories.insert(cat);
|
||
}
|
||
|
||
void printFlags(std::ostream & out) override
|
||
{
|
||
Args::printFlags(out);
|
||
std::cout <<
|
||
"\n"
|
||
"In addition, most configuration settings can be overriden using ‘--<name> <value>’.\n"
|
||
"Boolean settings can be overriden using ‘--<name>’ or ‘--no-<name>’. See ‘nix\n"
|
||
"--help-config’ for a list of configuration settings.\n";
|
||
}
|
||
};
|
||
|
||
void mainWrapped(int argc, char * * argv)
|
||
{
|
||
verbosity = lvlError;
|
||
settings.verboseBuild = false;
|
||
|
||
initNix();
|
||
initGC();
|
||
|
||
string programName = baseNameOf(argv[0]);
|
||
|
||
{
|
||
auto legacy = (*RegisterLegacyCommand::commands)[programName];
|
||
if (legacy) return legacy(argc, argv);
|
||
}
|
||
|
||
NixArgs args;
|
||
|
||
args.parseCmdline(argvToStrings(argc, argv));
|
||
|
||
assert(args.command);
|
||
|
||
StartProgressBar bar;
|
||
|
||
args.command->prepare();
|
||
args.command->run();
|
||
}
|
||
|
||
}
|
||
|
||
int main(int argc, char * * argv)
|
||
{
|
||
return nix::handleExceptions(argv[0], [&]() {
|
||
nix::mainWrapped(argc, argv);
|
||
});
|
||
}
|