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#include "command.hh"
#include "shared.hh"
#include "store-api.hh"
#include "common-args.hh"
#include <algorithm>
#include <array>
#include <nlohmann/json.hpp>
using namespace nix;
struct CmdPathInfo : StorePathsCommand, MixJSON
{
bool showSize = false;
bool showClosureSize = false;
bool humanReadable = false;
bool showSigs = false;
CmdPathInfo()
{
addFlag({
.longName = "size",
.shortName = 's',
.description = "Print the size of the NAR serialisation of each path.",
.handler = {&showSize, true},
});
addFlag({
.longName = "closure-size",
.shortName = 'S',
.description = "Print the sum of the sizes of the NAR serialisations of the closure of each path.",
.handler = {&showClosureSize, true},
});
addFlag({
.longName = "human-readable",
.shortName = 'h',
.description = "With `-s` and `-S`, print sizes in a human-friendly format such as `5.67G`.",
.handler = {&humanReadable, true},
});
addFlag({
.longName = "sigs",
.description = "Show signatures.",
.handler = {&showSigs, true},
});
}
std::string description() override
{
return "query information about store paths";
}
std::string doc() override
{
return
#include "path-info.md"
;
}
Category category() override { return catSecondary; }
void printSize(uint64_t value)
{
if (!humanReadable) {
std::cout << fmt("\t%11d", value);
return;
}
static const std::array<char, 9> idents{{
' ', 'K', 'M', 'G', 'T', 'P', 'E', 'Z', 'Y'
}};
size_t power = 0;
double res = value;
while (res > 1024 && power < idents.size()) {
++power;
res /= 1024;
}
std::cout << fmt("\t%6.1f%c", res, idents.at(power));
}
void run(ref<Store> store, StorePaths && storePaths) override
{
// Wipe the progress bar to prevent interference with the output.
// It's not needed any more because expensive evaluation or builds are already done here.
logger->pause();
size_t pathLen = 0;
for (auto & storePath : storePaths)
pathLen = std::max(pathLen, store->printStorePath(storePath).size());
if (json) {
std::cout << store->pathInfoToJSON(
// FIXME: preserve order?
StorePathSet(storePaths.begin(), storePaths.end()),
true, showClosureSize, Base::SRI, AllowInvalid).dump();
}
else {
for (auto & storePath : storePaths) {
auto info = store->queryPathInfo(storePath);
auto storePathS = store->printStorePath(info->path);
std::cout << storePathS;
if (showSize || showClosureSize || showSigs)
std::cout << std::string(std::max(0, (int) pathLen - (int) storePathS.size()), ' ');
if (showSize)
printSize(info->narSize);
if (showClosureSize)
printSize(store->getClosureSize(info->path).first);
if (showSigs) {
std::cout << '\t';
Strings ss;
if (info->ultimate) ss.push_back("ultimate");
if (info->ca) ss.push_back("ca:" + renderContentAddress(*info->ca));
for (auto & sig : info->sigs) ss.push_back(sig);
std::cout << concatStringsSep(" ", ss);
}
std::cout << std::endl;
}
}
}
};
static auto rCmdPathInfo = registerCommand<CmdPathInfo>("path-info");
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