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#include "common-opts.hh"
#include "../libmain/shared.hh"
#include "util.hh"
namespace nix {
bool parseOptionArg(const string & arg, Strings::iterator & i,
const Strings::iterator & argsEnd, EvalState & state,
Bindings & autoArgs)
{
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++;
/* !!! check for duplicates! */
Value * v = state.allocValue();
autoArgs.push_back(Attr(state.symbols.create(name), v));
if (arg == "--arg")
state.mkThunk_(*v, state.parseExprFromString(value, absPath(".")));
else
mkString(*v, value);
autoArgs.sort(); // !!! inefficient
return true;
}
bool parseSearchPathArg(const string & arg, Strings::iterator & i,
const Strings::iterator & argsEnd, EvalState & state)
{
if (arg != "-I") return false;
if (i == argsEnd) throw UsageError(format("`%1%' requires an argument") % arg);;
state.addToSearchPath(*i++);
return true;
}
Path lookupFileArg(EvalState & state, string s)
{
if (s.size() > 2 && s.at(0) == '<' && s.at(s.size() - 1) == '>') {
Path p = state.findFile(s.substr(1, s.size() - 2));
if (p == "") throw Error(format("file `%1%' was not found in the Nix search path (add it using $NIX_PATH or -I)") % p);
return p;
} else
return absPath(s);
}
}
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