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#include "command.hh"
#include "store-api.hh"
#include "derivations.hh"
#include "nixexpr.hh"
#include "profiles.hh"
extern char * * environ;
namespace nix {
Commands * RegisterCommand::commands = nullptr;
StoreCommand::StoreCommand()
{
}
ref<Store> StoreCommand::getStore()
{
if (!_store)
_store = createStore();
return ref<Store>(_store);
}
ref<Store> StoreCommand::createStore()
{
return openStore();
}
void StoreCommand::run()
{
run(getStore());
}
StorePathsCommand::StorePathsCommand(bool recursive)
: recursive(recursive)
{
if (recursive)
mkFlag()
.longName("no-recursive")
.description("apply operation to specified paths only")
.set(&this->recursive, false);
else
mkFlag()
.longName("recursive")
.shortName('r')
.description("apply operation to closure of the specified paths")
.set(&this->recursive, true);
mkFlag(0, "all", "apply operation to the entire store", &all);
}
void StorePathsCommand::run(ref<Store> store)
{
Paths storePaths;
if (all) {
if (installables.size())
throw UsageError("'--all' does not expect arguments");
for (auto & p : store->queryAllValidPaths())
storePaths.push_back(p);
}
else {
for (auto & p : toStorePaths(store, realiseMode, installables))
storePaths.push_back(p);
if (recursive) {
PathSet closure;
store->computeFSClosure(PathSet(storePaths.begin(), storePaths.end()),
closure, false, false);
storePaths = Paths(closure.begin(), closure.end());
}
}
run(store, storePaths);
}
void StorePathCommand::run(ref<Store> store)
{
auto storePaths = toStorePaths(store, NoBuild, installables);
if (storePaths.size() != 1)
throw UsageError("this command requires exactly one store path");
run(store, *storePaths.begin());
}
Strings editorFor(const Pos & pos)
{
auto editor = getEnv("EDITOR").value_or("cat");
auto args = tokenizeString<Strings>(editor);
if (pos.line > 0 && (
editor.find("emacs") != std::string::npos ||
editor.find("nano") != std::string::npos ||
editor.find("vim") != std::string::npos))
args.push_back(fmt("+%d", pos.line));
args.push_back(pos.file);
return args;
}
MixProfile::MixProfile()
{
mkFlag()
.longName("profile")
.description("profile to update")
.labels({"path"})
.dest(&profile);
}
void MixProfile::updateProfile(const Path & storePath)
{
if (!profile) return;
auto store = getStore().dynamic_pointer_cast<LocalFSStore>();
if (!store) throw Error("'--profile' is not supported for this Nix store");
auto profile2 = absPath(*profile);
switchLink(profile2,
createGeneration(
ref<LocalFSStore>(store),
profile2, storePath));
}
void MixProfile::updateProfile(const Buildables & buildables)
{
if (!profile) return;
std::optional<Path> result;
for (auto & buildable : buildables) {
for (auto & output : buildable.outputs) {
if (result)
throw Error("'--profile' requires that the arguments produce a single store path, but there are multiple");
result = output.second;
}
}
if (!result)
throw Error("'--profile' requires that the arguments produce a single store path, but there are none");
updateProfile(*result);
}
MixDefaultProfile::MixDefaultProfile()
{
profile = getDefaultProfile();
}
MixEnvironment::MixEnvironment() : ignoreEnvironment(false) {
mkFlag()
.longName("ignore-environment")
.shortName('i')
.description("clear the entire environment (except those specified with --keep)")
.set(&ignoreEnvironment, true);
mkFlag()
.longName("keep")
.shortName('k')
.description("keep specified environment variable")
.arity(1)
.labels({"name"})
.handler([&](std::vector<std::string> ss) { keep.insert(ss.front()); });
mkFlag()
.longName("unset")
.shortName('u')
.description("unset specified environment variable")
.arity(1)
.labels({"name"})
.handler([&](std::vector<std::string> ss) { unset.insert(ss.front()); });
}
void MixEnvironment::setEnviron() {
if (ignoreEnvironment) {
if (!unset.empty())
throw UsageError("--unset does not make sense with --ignore-environment");
for (const auto & var : keep) {
auto val = getenv(var.c_str());
if (val) stringsEnv.emplace_back(fmt("%s=%s", var.c_str(), val));
}
vectorEnv = stringsToCharPtrs(stringsEnv);
environ = vectorEnv.data();
} else {
if (!keep.empty())
throw UsageError("--keep does not make sense without --ignore-environment");
for (const auto & var : unset)
unsetenv(var.c_str());
}
}
}
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