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