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#include "libexpr/common-eval-args.hh"
#include "libexpr/eval.hh"
#include "libmain/shared.hh"
#include "libstore/download.hh"
#include "libutil/util.hh"
namespace nix {
MixEvalArgs::MixEvalArgs() {
mkFlag()
.longName("arg")
.description("argument to be passed to Nix functions")
.labels({"name", "expr"})
.handler(
[&](std::vector<std::string> ss) { autoArgs[ss[0]] = 'E' + ss[1]; });
mkFlag()
.longName("argstr")
.description("string-valued argument to be passed to Nix functions")
.labels({"name", "string"})
.handler(
[&](std::vector<std::string> ss) { autoArgs[ss[0]] = 'S' + ss[1]; });
mkFlag()
.shortName('I')
.longName("include")
.description(
"add a path to the list of locations used to look up <...> file "
"names")
.label("path")
.handler([&](const std::string& s) { searchPath.push_back(s); });
}
Bindings* MixEvalArgs::getAutoArgs(EvalState& state) {
Bindings* res = Bindings::NewGC(autoArgs.size());
for (auto& i : autoArgs) {
Value* v = state.allocValue();
if (i.second[0] == 'E') {
state.mkThunk_(*v, state.parseExprFromString(std::string(i.second, 1),
absPath(".")));
} else {
mkString(*v, std::string(i.second, 1));
}
res->push_back(Attr(state.symbols.Create(i.first), v));
}
return res;
}
Path lookupFileArg(EvalState& state, std::string s) {
if (isUri(s)) {
CachedDownloadRequest request(s);
request.unpack = true;
return getDownloader()->downloadCached(state.store, request).path;
}
if (s.size() > 2 && s.at(0) == '<' && s.at(s.size() - 1) == '>') {
Path p = s.substr(1, s.size() - 2);
return state.findFile(p);
} else {
return absPath(s);
}
}
} // namespace nix
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