76 lines
2.2 KiB
C++
76 lines
2.2 KiB
C++
#include "command.hh"
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#include "progress-bar.hh"
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#include "shared.hh"
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#include "store-api.hh"
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#include <iomanip>
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using namespace nix;
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struct CmdPathInfo : StorePathsCommand
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{
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bool showSize = false;
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bool showClosureSize = false;
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CmdPathInfo()
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{
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mkFlag('s', "size", "print size of the NAR dump of each path", &showSize);
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mkFlag('S', "closure-size", "print sum size of the NAR dumps of the closure of each path", &showClosureSize);
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}
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std::string name() override
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{
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return "path-info";
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}
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std::string description() override
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{
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return "query information about store paths";
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}
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Examples examples() override
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{
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return {
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Example{
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"To show the closure sizes of every path in the current NixOS system closure, sorted by size:",
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"nix path-info -rS /run/current-system | sort -nk2"
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},
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Example{
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"To check the existence of a path in a binary cache:",
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"nix path-info -r /nix/store/7qvk5c91...-geeqie-1.1 --store https://cache.nixos.org/"
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},
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};
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}
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void run(ref<Store> store, Paths storePaths) override
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{
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size_t pathLen = 0;
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for (auto & storePath : storePaths)
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pathLen = std::max(pathLen, storePath.size());
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for (auto & storePath : storePaths) {
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if (!store->isValidPath(storePath))
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throw Error(format("path ‘%s’ is not valid") % storePath);
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std::cout << storePath << std::string(pathLen - storePath.size(), ' ');
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if (showSize) {
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std::cout << '\t' << std::setw(11) << store->queryPathInfo(storePath)->narSize;
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}
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if (showClosureSize) {
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size_t totalSize = 0;
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PathSet closure;
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store->computeFSClosure(storePath, closure, false, false);
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for (auto & p : closure)
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totalSize += store->queryPathInfo(p)->narSize;
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std::cout << '\t' << std::setw(11) << totalSize;
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}
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std::cout << std::endl;
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}
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}
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};
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static RegisterCommand r1(make_ref<CmdPathInfo>());
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