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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("path '%1%' does not exist", path);
if (st.type != FSAccessor::Type::tRegular)
throw Error("path '%1%' is not a regular file", path);
std::cout << accessor->readFile(path);
}
};
struct CmdCatStore : StoreCommand, MixCat
{
CmdCatStore()
{
expectArgs({
.label = "path",
.handler = {&path},
.completer = completePath
});
}
std::string description() override
{
return "print the contents of a file in the Nix store on stdout";
}
void run(ref<Store> store) override
{
cat(store->getFSAccessor());
}
};
struct CmdCatNar : StoreCommand, MixCat
{
Path narPath;
CmdCatNar()
{
expectArgs({
.label = "nar",
.handler = {&narPath},
.completer = completePath
});
expectArg("path", &path);
}
std::string description() override
{
return "print the contents of a file inside a NAR file on stdout";
}
std::string doc() override
{
return
#include "nar-cat.md"
;
}
void run(ref<Store> store) override
{
cat(makeNarAccessor(make_ref<std::string>(readFile(narPath))));
}
};
static auto rCmdCatStore = registerCommand2<CmdCatStore>({"store", "cat"});
static auto rCmdCatNar = registerCommand2<CmdCatNar>({"nar", "cat"});
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