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#include "common-opts.hh"
#include "shared.hh"
#include "download.hh"
#include "util.hh"
namespace nix {
bool parseAutoArgs(Strings::iterator & i,
const Strings::iterator & argsEnd, std::map<string, string> & res)
{
string arg = *i;
if (arg != "--arg" && arg != "--argstr") return false;
UsageError error(format("‘%1%’ requires two arguments") % arg);
if (++i == argsEnd) throw error;
string name = *i;
if (++i == argsEnd) throw error;
string value = *i;
res[name] = (arg == "--arg" ? 'E' : 'S') + value;
return true;
}
Bindings * evalAutoArgs(EvalState & state, std::map<string, string> & in)
{
Bindings * res = state.allocBindings(in.size());
for (auto & i : in) {
Value * v = state.allocValue();
if (i.second[0] == 'E')
state.mkThunk_(*v, state.parseExprFromString(string(i.second, 1), absPath(".")));
else
mkString(*v, string(i.second, 1));
res->push_back(Attr(state.symbols.create(i.first), v));
}
res->sort();
return res;
}
bool parseSearchPathArg(Strings::iterator & i,
const Strings::iterator & argsEnd, Strings & searchPath)
{
if (*i != "-I") return false;
if (++i == argsEnd) throw UsageError("‘-I’ requires an argument");
searchPath.push_back(*i);
return true;
}
Path lookupFileArg(EvalState & state, string s)
{
if (isUri(s))
return makeDownloader()->downloadCached(state.store, s, true);
else 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);
}
}
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