forked from lix-project/lix
69 lines
1.5 KiB
C++
69 lines
1.5 KiB
C++
#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 file in the Nix store on stdout";
|
|
}
|
|
|
|
Category category() override { return catUtility; }
|
|
|
|
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 on stdout";
|
|
}
|
|
|
|
Category category() override { return catUtility; }
|
|
|
|
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");
|