diff options
Diffstat (limited to 'src/nix-instantiate/nix-instantiate.cc')
| -rw-r--r-- | src/nix-instantiate/nix-instantiate.cc | 202 |
1 files changed, 96 insertions, 106 deletions
diff --git a/src/nix-instantiate/nix-instantiate.cc b/src/nix-instantiate/nix-instantiate.cc index a188b28fe8..e9f9427697 100644 --- a/src/nix-instantiate/nix-instantiate.cc +++ b/src/nix-instantiate/nix-instantiate.cc @@ -18,12 +18,6 @@ using namespace nix; -void printHelp() -{ - showManPage("nix-instantiate"); -} - - static Expr * parseStdin(EvalState & state) { startNest(nest, lvlTalkative, format("parsing standard input")); @@ -95,112 +89,108 @@ void processExpr(EvalState & state, const Strings & attrPaths, } -void run(Strings args) +int main(int argc, char * * argv) { - /* FIXME: hack. */ - Strings searchPath; - Strings args2; - for (Strings::iterator i = args.begin(); i != args.end(); ) { - string arg = *i++; - if (!parseSearchPathArg(arg, i, args.end(), searchPath)) - args2.push_back(arg); - } - args = args2; - - EvalState state(searchPath); - Strings files; - bool readStdin = false; - bool fromArgs = false; - bool findFile = false; - bool evalOnly = false; - bool parseOnly = false; - OutputKind outputKind = okPlain; - bool xmlOutputSourceLocation = true; - bool strict = false; - Strings attrPaths; - Bindings autoArgs; - bool wantsReadWrite = false; - - for (Strings::iterator i = args.begin(); i != args.end(); ) { - string arg = *i++; - - if (arg == "-") - readStdin = true; - else if (arg == "--expr" || arg == "-E") - fromArgs = true; - else if (arg == "--eval" || arg == "--eval-only") - evalOnly = true; - else if (arg == "--read-write-mode") - wantsReadWrite = true; - else if (arg == "--parse" || arg == "--parse-only") - parseOnly = evalOnly = true; - else if (arg == "--find-file") - findFile = true; - else if (arg == "--attr" || arg == "-A") { - if (i == args.end()) - throw UsageError("`--attr' requires an argument"); - attrPaths.push_back(*i++); - } - else if (parseOptionArg(arg, i, args.end(), state, autoArgs)) - ; - else if (arg == "--add-root") { - if (i == args.end()) - throw UsageError("`--add-root' requires an argument"); - gcRoot = absPath(*i++); - } - else if (arg == "--indirect") - indirectRoot = true; - else if (arg == "--xml") - outputKind = okXML; - else if (arg == "--json") - outputKind = okJSON; - else if (arg == "--no-location") - xmlOutputSourceLocation = false; - else if (arg == "--strict") - strict = true; - else if (arg == "--repair") - state.repair = true; - else if (arg == "--dry-run") - settings.readOnlyMode = true; - else if (arg[0] == '-') - throw UsageError(format("unknown flag `%1%'") % arg); - else - files.push_back(arg); - } + return handleExceptions(argv[0], [&]() { + initNix(); + + Strings files, searchPath; + bool readStdin = false; + bool fromArgs = false; + bool findFile = false; + bool evalOnly = false; + bool parseOnly = false; + OutputKind outputKind = okPlain; + bool xmlOutputSourceLocation = true; + bool strict = false; + Strings attrPaths; + bool wantsReadWrite = false; + std::map<string, string> autoArgs_; + bool repair = false; + + parseCmdLine(argc, argv, [&](Strings::iterator & arg, const Strings::iterator & end) { + if (*arg == "--help") + showManPage("nix-instantiate"); + else if (*arg == "--version") + printVersion("nix-instantiate"); + else if (*arg == "-") + readStdin = true; + else if (*arg == "--expr" || *arg == "-E") + fromArgs = true; + else if (*arg == "--eval" || *arg == "--eval-only") + evalOnly = true; + else if (*arg == "--read-write-mode") + wantsReadWrite = true; + else if (*arg == "--parse" || *arg == "--parse-only") + parseOnly = evalOnly = true; + else if (*arg == "--find-file") + findFile = true; + else if (*arg == "--attr" || *arg == "-A") + attrPaths.push_back(getArg(*arg, arg, end)); + else if (parseAutoArgs(arg, end, autoArgs_)) + ; + else if (parseSearchPathArg(arg, end, searchPath)) + ; + else if (*arg == "--add-root") + gcRoot = getArg(*arg, arg, end); + else if (*arg == "--indirect") + indirectRoot = true; + else if (*arg == "--xml") + outputKind = okXML; + else if (*arg == "--json") + outputKind = okJSON; + else if (*arg == "--no-location") + xmlOutputSourceLocation = false; + else if (*arg == "--strict") + strict = true; + else if (*arg == "--repair") + repair = true; + else if (*arg == "--dry-run") + settings.readOnlyMode = true; + else if (*arg != "" && arg->at(0) == '-') + return false; + else + files.push_back(*arg); + return true; + }); - if (evalOnly && !wantsReadWrite) - settings.readOnlyMode = true; + EvalState state(searchPath); + state.repair = repair; - if (attrPaths.empty()) attrPaths.push_back(""); + Bindings autoArgs; + evalAutoArgs(state, autoArgs_, autoArgs); - if (findFile) { - foreach (Strings::iterator, i, files) { - Path p = state.findFile(*i); - if (p == "") throw Error(format("unable to find `%1%'") % *i); - std::cout << p << std::endl; + if (evalOnly && !wantsReadWrite) + settings.readOnlyMode = true; + + if (attrPaths.empty()) attrPaths.push_back(""); + + if (findFile) { + foreach (Strings::iterator, i, files) { + Path p = state.findFile(*i); + if (p == "") throw Error(format("unable to find `%1%'") % *i); + std::cout << p << std::endl; + } + return; } - return; - } - store = openStore(); - - if (readStdin) { - Expr * e = parseStdin(state); - processExpr(state, attrPaths, parseOnly, strict, autoArgs, - evalOnly, outputKind, xmlOutputSourceLocation, e); - } else if (files.empty() && !fromArgs) - files.push_back("./default.nix"); - - foreach (Strings::iterator, i, files) { - Expr * e = fromArgs - ? state.parseExprFromString(*i, absPath(".")) - : state.parseExprFromFile(resolveExprPath(lookupFileArg(state, *i))); - processExpr(state, attrPaths, parseOnly, strict, autoArgs, - evalOnly, outputKind, xmlOutputSourceLocation, e); - } + store = openStore(); - state.printStats(); -} + if (readStdin) { + Expr * e = parseStdin(state); + processExpr(state, attrPaths, parseOnly, strict, autoArgs, + evalOnly, outputKind, xmlOutputSourceLocation, e); + } else if (files.empty() && !fromArgs) + files.push_back("./default.nix"); + foreach (Strings::iterator, i, files) { + Expr * e = fromArgs + ? state.parseExprFromString(*i, absPath(".")) + : state.parseExprFromFile(resolveExprPath(lookupFileArg(state, *i))); + processExpr(state, attrPaths, parseOnly, strict, autoArgs, + evalOnly, outputKind, xmlOutputSourceLocation, e); + } -string programId = "nix-instantiate"; + state.printStats(); + }); +} |