59 lines
1.5 KiB
C++
59 lines
1.5 KiB
C++
#include "common-opts.hh"
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#include "../libmain/shared.hh"
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#include "util.hh"
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namespace nix {
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bool parseOptionArg(const string & arg, Strings::iterator & i,
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const Strings::iterator & argsEnd, EvalState & state,
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Bindings & autoArgs)
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{
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if (arg != "--arg" && arg != "--argstr") return false;
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UsageError error(format("`%1%' requires two arguments") % arg);
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if (i == argsEnd) throw error;
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string name = *i++;
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if (i == argsEnd) throw error;
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string value = *i++;
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/* !!! check for duplicates! */
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Value * v = state.allocValue();
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autoArgs.push_back(Attr(state.symbols.create(name), v));
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if (arg == "--arg")
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state.mkThunk_(*v, state.parseExprFromString(value, absPath(".")));
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else
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mkString(*v, value);
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autoArgs.sort(); // !!! inefficient
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return true;
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}
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bool parseSearchPathArg(const string & arg, Strings::iterator & i,
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const Strings::iterator & argsEnd, Strings & searchPath)
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{
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if (arg != "-I") return false;
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if (i == argsEnd) throw UsageError(format("`%1%' requires an argument") % arg);;
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searchPath.push_back(*i++);
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return true;
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}
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Path lookupFileArg(EvalState & state, string s)
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{
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if (s.size() > 2 && s.at(0) == '<' && s.at(s.size() - 1) == '>') {
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Path p = s.substr(1, s.size() - 2);
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Path p2 = state.findFile(p);
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if (p2 == "") throw Error(format("file `%1%' was not found in the Nix search path (add it using $NIX_PATH or -I)") % p);
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return p2;
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} else
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return absPath(s);
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}
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}
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