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#include "command.hh"
#include "store-api.hh"
#include "fs-accessor.hh"
#include "nar-accessor.hh"
using namespace nix;
struct MixCat : virtual Args
{
std::string path;
void cat(ref<FSAccessor> accessor)
{
auto st = accessor->stat(path);
if (st.type == FSAccessor::Type::tMissing)
throw Error(format("path '%1%' does not exist") % path);
if (st.type != FSAccessor::Type::tRegular)
throw Error(format("path '%1%' is not a regular file") % path);
std::cout << accessor->readFile(path);
}
};
struct CmdCatStore : StoreCommand, MixCat
{
CmdCatStore()
{
expectArg("path", &path);
}
std::string description() override
{
return "print the contents of a store file on stdout";
}
void run(ref<Store> store) override
{
cat(store->getFSAccessor());
}
};
struct CmdCatNar : StoreCommand, MixCat
{
Path narPath;
CmdCatNar()
{
expectArg("nar", &narPath);
expectArg("path", &path);
}
std::string description() override
{
return "print the contents of a file inside a NAR file";
}
void run(ref<Store> store) override
{
cat(makeNarAccessor(make_ref<std::string>(readFile(narPath))));
}
};
static auto r1 = registerCommand<CmdCatStore>("cat-store");
static auto r2 = registerCommand<CmdCatNar>("cat-nar");
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