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#include "command.hh"
#include "store-api.hh"
#include "fs-accessor.hh"
#include "nar-accessor.hh"
#include "common-args.hh"
#include <nlohmann/json.hpp>
using namespace nix;
struct MixLs : virtual Args, MixJSON
{
std::string path;
bool recursive = false;
bool verbose = false;
bool showDirectory = false;
MixLs()
{
addFlag({
.longName = "recursive",
.shortName = 'R',
.description = "List subdirectories recursively.",
.handler = {&recursive, true},
});
addFlag({
.longName = "long",
.shortName = 'l',
.description = "Show detailed file information.",
.handler = {&verbose, true},
});
addFlag({
.longName = "directory",
.shortName = 'd',
.description = "Show directories rather than their contents.",
.handler = {&showDirectory, true},
});
}
void listText(ref<FSAccessor> accessor)
{
std::function<void(const FSAccessor::Stat &, const Path &, const std::string &, bool)> doPath;
auto showFile = [&](const Path & curPath, const std::string & relPath) {
if (verbose) {
auto st = accessor->stat(curPath);
std::string tp =
st.type == FSAccessor::Type::tRegular ?
(st.isExecutable ? "-r-xr-xr-x" : "-r--r--r--") :
st.type == FSAccessor::Type::tSymlink ? "lrwxrwxrwx" :
"dr-xr-xr-x";
auto line = fmt("%s %20d %s", tp, st.fileSize, relPath);
if (st.type == FSAccessor::Type::tSymlink)
line += " -> " + accessor->readLink(curPath);
logger->cout(line);
if (recursive && st.type == FSAccessor::Type::tDirectory)
doPath(st, curPath, relPath, false);
} else {
logger->cout(relPath);
if (recursive) {
auto st = accessor->stat(curPath);
if (st.type == FSAccessor::Type::tDirectory)
doPath(st, curPath, relPath, false);
}
}
};
doPath = [&](const FSAccessor::Stat & st, const Path & curPath,
const std::string & relPath, bool showDirectory)
{
if (st.type == FSAccessor::Type::tDirectory && !showDirectory) {
auto names = accessor->readDirectory(curPath);
for (auto & name : names)
showFile(curPath + "/" + name, relPath + "/" + name);
} else
showFile(curPath, relPath);
};
auto st = accessor->stat(path);
if (st.type == FSAccessor::Type::tMissing)
throw Error("path '%1%' does not exist", path);
doPath(st, path,
st.type == FSAccessor::Type::tDirectory ? "." : std::string(baseNameOf(path)),
showDirectory);
}
void list(ref<FSAccessor> accessor)
{
if (path == "/") path = "";
if (json) {
if (showDirectory)
throw UsageError("'--directory' is useless with '--json'");
logger->cout("%s", listNar(accessor, path, recursive));
} else
listText(accessor);
}
};
struct CmdLsStore : StoreCommand, MixLs
{
CmdLsStore()
{
expectArgs({
.label = "path",
.handler = {&path},
.completer = completePath
});
}
std::string description() override
{
return "show information about a path in the Nix store";
}
std::string doc() override
{
return
#include "store-ls.md"
;
}
void run(ref<Store> store) override
{
list(store->getFSAccessor());
}
};
struct CmdLsNar : Command, MixLs
{
Path narPath;
CmdLsNar()
{
expectArgs({
.label = "nar",
.handler = {&narPath},
.completer = completePath
});
expectArg("path", &path);
}
std::string doc() override
{
return
#include "nar-ls.md"
;
}
std::string description() override
{
return "show information about a path inside a NAR file";
}
void run() override
{
list(makeNarAccessor(readFile(narPath)));
}
};
static auto rCmdLsStore = registerCommand2<CmdLsStore>({"store", "ls"});
static auto rCmdLsNar = registerCommand2<CmdLsNar>({"nar", "ls"});
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