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#include "command.hh"
#include "attr-path.hh"
#include "common-opts.hh"
#include "derivations.hh"
#include "eval-inline.hh"
#include "eval.hh"
#include "get-drvs.hh"
#include "store-api.hh"
#include "shared.hh"
#include <regex>
namespace nix {
Value * InstallablesCommand::getSourceExpr(EvalState & state)
{
if (vSourceExpr) return vSourceExpr;
vSourceExpr = state.allocValue();
if (file != "") {
Expr * e = state.parseExprFromFile(resolveExprPath(lookupFileArg(state, file)));
state.eval(e, *vSourceExpr);
}
else {
/* Construct the installation source from $NIX_PATH. */
auto searchPath = state.getSearchPath();
state.mkAttrs(*vSourceExpr, searchPath.size());
std::unordered_set<std::string> seen;
for (auto & i : searchPath) {
if (i.first == "") continue;
if (seen.count(i.first)) continue;
seen.insert(i.first);
#if 0
auto res = state.resolveSearchPathElem(i);
if (!res.first) continue;
if (!pathExists(res.second)) continue;
mkApp(*state.allocAttr(*vSourceExpr, state.symbols.create(i.first)),
state.getBuiltin("import"),
mkString(*state.allocValue(), res.second));
#endif
Value * v1 = state.allocValue();
mkPrimOpApp(*v1, state.getBuiltin("findFile"), state.getBuiltin("nixPath"));
Value * v2 = state.allocValue();
mkApp(*v2, *v1, mkString(*state.allocValue(), i.first));
mkApp(*state.allocAttr(*vSourceExpr, state.symbols.create(i.first)),
state.getBuiltin("import"), *v2);
}
vSourceExpr->attrs->sort();
}
return vSourceExpr;
}
struct InstallableStoreDrv : Installable
{
Path storePath;
InstallableStoreDrv(const Path & storePath) : storePath(storePath) { }
std::string what() override { return storePath; }
Buildables toBuildable() override
{
return {{storePath, {}}};
}
};
struct InstallableStorePath : Installable
{
Path storePath;
InstallableStorePath(const Path & storePath) : storePath(storePath) { }
std::string what() override { return storePath; }
Buildables toBuildable() override
{
return {{storePath, {}}};
}
};
struct InstallableExpr : Installable
{
InstallablesCommand & installables;
std::string text;
InstallableExpr(InstallablesCommand & installables, const std::string & text)
: installables(installables), text(text) { }
std::string what() override { return text; }
Buildables toBuildable() override
{
auto state = installables.getEvalState();
auto v = toValue(*state);
// FIXME
std::map<string, string> autoArgs_;
Bindings & autoArgs(*evalAutoArgs(*state, autoArgs_));
DrvInfos drvs;
getDerivations(*state, *v, "", autoArgs, drvs, false);
Buildables res;
for (auto & drv : drvs)
for (auto & output : drv.queryOutputs())
res.emplace(output.second, Whence{output.first, drv.queryDrvPath()});
return res;
}
Value * toValue(EvalState & state) override
{
auto v = state.allocValue();
state.eval(state.parseExprFromString(text, absPath(".")), *v);
return v;
}
};
struct InstallableAttrPath : Installable
{
InstallablesCommand & installables;
std::string attrPath;
InstallableAttrPath(InstallablesCommand & installables, const std::string & attrPath)
: installables(installables), attrPath(attrPath)
{ }
std::string what() override { return attrPath; }
Buildables toBuildable() override
{
auto state = installables.getEvalState();
auto v = toValue(*state);
// FIXME
std::map<string, string> autoArgs_;
Bindings & autoArgs(*evalAutoArgs(*state, autoArgs_));
DrvInfos drvs;
getDerivations(*state, *v, "", autoArgs, drvs, false);
Buildables res;
for (auto & drv : drvs)
for (auto & output : drv.queryOutputs())
res.emplace(output.second, Whence{output.first, drv.queryDrvPath()});
return res;
}
Value * toValue(EvalState & state) override
{
auto source = installables.getSourceExpr(state);
// FIXME
std::map<string, string> autoArgs_;
Bindings & autoArgs(*evalAutoArgs(state, autoArgs_));
Value * v = findAlongAttrPath(state, attrPath, autoArgs, *source);
state.forceValue(*v);
return v;
}
};
// FIXME: extend
std::string attrRegex = R"([A-Za-z_][A-Za-z0-9-_+]*)";
static std::regex attrPathRegex(fmt(R"(%1%(\.%1%)*)", attrRegex));
std::vector<std::shared_ptr<Installable>> InstallablesCommand::parseInstallables(ref<Store> store, Strings ss)
{
std::vector<std::shared_ptr<Installable>> result;
if (ss.empty() && useDefaultInstallables()) {
if (file == "")
file = ".";
ss = Strings{""};
}
for (auto & s : ss) {
if (s.compare(0, 1, "(") == 0)
result.push_back(std::make_shared<InstallableExpr>(*this, s));
else if (s.find("/") != std::string::npos) {
auto path = store->toStorePath(store->followLinksToStore(s));
if (store->isStorePath(path)) {
if (isDerivation(path))
result.push_back(std::make_shared<InstallableStoreDrv>(path));
else
result.push_back(std::make_shared<InstallableStorePath>(path));
}
}
else if (s == "" || std::regex_match(s, attrPathRegex))
result.push_back(std::make_shared<InstallableAttrPath>(*this, s));
else
throw UsageError("don't know what to do with argument ‘%s’", s);
}
return result;
}
PathSet InstallablesCommand::toStorePaths(ref<Store> store, ToStorePathsMode mode)
{
if (mode != DryRun)
settings.readOnlyMode = true;
PathSet outPaths, buildables;
for (auto & i : installables)
for (auto & b : i->toBuildable()) {
outPaths.insert(b.first);
buildables.insert(b.second.drvPath != "" ? b.second.drvPath : b.first);
}
if (mode == DryRun)
printMissing(store, buildables);
else if (mode == Build)
store->buildPaths(buildables);
return outPaths;
}
ref<EvalState> InstallablesCommand::getEvalState()
{
if (!evalState)
evalState = std::make_shared<EvalState>(Strings{}, getStore());
return ref<EvalState>(evalState);
}
void InstallablesCommand::prepare()
{
installables = parseInstallables(getStore(), _installables);
}
}
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