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https://github.com/NixOS/nix
synced 2025-06-27 04:21:16 +02:00
Refactor option handling
This commit is contained in:
Eelco Dolstra
parent
5bed74d1b0
commit
47e185847e
10 changed files with 503 additions and 531 deletions
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@ -29,12 +29,6 @@ using std::cout;
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typedef void (* Operation) (Strings opFlags, Strings opArgs);
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void printHelp()
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{
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showManPage("nix-store");
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}
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static Path gcRoot;
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static int rootNr = 0;
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static bool indirectRoot = false;
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@ -782,7 +776,7 @@ static void opVerify(Strings opFlags, Strings opArgs)
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if (ensureLocalStore().verifyStore(checkContents, repair)) {
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printMsg(lvlError, "warning: not all errors were fixed");
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exitCode = 1;
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throw Exit(1);
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}
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}
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@ -793,6 +787,8 @@ static void opVerifyPath(Strings opFlags, Strings opArgs)
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if (!opFlags.empty())
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throw UsageError("no flags expected");
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int status = 0;
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foreach (Strings::iterator, i, opArgs) {
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Path path = followLinksToStorePath(*i);
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printMsg(lvlTalkative, format("checking path `%1%'...") % path);
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@ -802,9 +798,11 @@ static void opVerifyPath(Strings opFlags, Strings opArgs)
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printMsg(lvlError,
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format("path `%1%' was modified! expected hash `%2%', got `%3%'")
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% path % printHash(info.hash) % printHash(current.first));
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exitCode = 1;
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status = 1;
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}
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}
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throw Exit(status);
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}
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@ -1017,95 +1015,96 @@ static void opServe(Strings opFlags, Strings opArgs)
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/* Scan the arguments; find the operation, set global flags, put all
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other flags in a list, and put all other arguments in another
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list. */
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void run(Strings args)
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int main(int argc, char * * argv)
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{
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Strings opFlags, opArgs;
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Operation op = 0;
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return handleExceptions(argv[0], [&]() {
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initNix();
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for (Strings::iterator i = args.begin(); i != args.end(); ) {
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string arg = *i++;
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Strings opFlags, opArgs;
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Operation op = 0;
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Operation oldOp = op;
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parseCmdLine(argc, argv, [&](Strings::iterator & arg, const Strings::iterator & end) {
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Operation oldOp = op;
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if (arg == "--realise" || arg == "--realize" || arg == "-r")
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op = opRealise;
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else if (arg == "--add" || arg == "-A")
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op = opAdd;
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else if (arg == "--add-fixed")
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op = opAddFixed;
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else if (arg == "--print-fixed-path")
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op = opPrintFixedPath;
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else if (arg == "--delete")
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op = opDelete;
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else if (arg == "--query" || arg == "-q")
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op = opQuery;
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else if (arg == "--print-env")
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op = opPrintEnv;
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else if (arg == "--read-log" || arg == "-l")
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op = opReadLog;
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else if (arg == "--dump-db")
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op = opDumpDB;
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else if (arg == "--load-db")
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op = opLoadDB;
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else if (arg == "--register-validity")
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op = opRegisterValidity;
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else if (arg == "--check-validity")
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op = opCheckValidity;
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else if (arg == "--gc")
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op = opGC;
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else if (arg == "--dump")
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op = opDump;
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else if (arg == "--restore")
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op = opRestore;
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else if (arg == "--export")
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op = opExport;
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else if (arg == "--import")
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op = opImport;
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else if (arg == "--init")
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op = opInit;
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else if (arg == "--verify")
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op = opVerify;
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else if (arg == "--verify-path")
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op = opVerifyPath;
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else if (arg == "--repair-path")
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op = opRepairPath;
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else if (arg == "--optimise" || arg == "--optimize")
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op = opOptimise;
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else if (arg == "--query-failed-paths")
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op = opQueryFailedPaths;
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else if (arg == "--clear-failed-paths")
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op = opClearFailedPaths;
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else if (arg == "--add-root") {
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if (i == args.end())
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throw UsageError("`--add-root requires an argument");
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gcRoot = absPath(*i++);
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}
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else if (arg == "--indirect")
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indirectRoot = true;
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else if (arg == "--no-output")
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noOutput = true;
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else if (arg == "--serve")
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op = opServe;
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else if (arg[0] == '-') {
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opFlags.push_back(arg);
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if (arg == "--max-freed" || arg == "--max-links" || arg == "--max-atime") { /* !!! hack */
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if (i != args.end()) opFlags.push_back(*i++);
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if (*arg == "--help")
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showManPage("nix-store");
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else if (*arg == "--version")
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printVersion("nix-store");
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else if (*arg == "--realise" || *arg == "--realize" || *arg == "-r")
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op = opRealise;
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else if (*arg == "--add" || *arg == "-A")
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op = opAdd;
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else if (*arg == "--add-fixed")
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op = opAddFixed;
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else if (*arg == "--print-fixed-path")
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op = opPrintFixedPath;
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else if (*arg == "--delete")
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op = opDelete;
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else if (*arg == "--query" || *arg == "-q")
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op = opQuery;
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else if (*arg == "--print-env")
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op = opPrintEnv;
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else if (*arg == "--read-log" || *arg == "-l")
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op = opReadLog;
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else if (*arg == "--dump-db")
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op = opDumpDB;
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else if (*arg == "--load-db")
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op = opLoadDB;
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else if (*arg == "--register-validity")
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op = opRegisterValidity;
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else if (*arg == "--check-validity")
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op = opCheckValidity;
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else if (*arg == "--gc")
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op = opGC;
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else if (*arg == "--dump")
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op = opDump;
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else if (*arg == "--restore")
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op = opRestore;
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else if (*arg == "--export")
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op = opExport;
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else if (*arg == "--import")
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op = opImport;
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else if (*arg == "--init")
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op = opInit;
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else if (*arg == "--verify")
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op = opVerify;
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else if (*arg == "--verify-path")
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op = opVerifyPath;
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else if (*arg == "--repair-path")
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op = opRepairPath;
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else if (*arg == "--optimise" || *arg == "--optimize")
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op = opOptimise;
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else if (*arg == "--query-failed-paths")
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op = opQueryFailedPaths;
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else if (*arg == "--clear-failed-paths")
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op = opClearFailedPaths;
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else if (*arg == "--add-root")
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gcRoot = absPath(getArg(*arg, arg, end));
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else if (*arg == "--indirect")
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indirectRoot = true;
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else if (*arg == "--no-output")
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noOutput = true;
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else if (*arg == "--serve")
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op = opServe;
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else if (*arg != "" && arg->at(0) == '-') {
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opFlags.push_back(*arg);
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if (*arg == "--max-freed" || *arg == "--max-links" || *arg == "--max-atime") /* !!! hack */
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opFlags.push_back(getArg(*arg, arg, end));
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}
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}
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else
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opArgs.push_back(arg);
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else
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opArgs.push_back(*arg);
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if (oldOp && oldOp != op)
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throw UsageError("only one operation may be specified");
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}
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if (oldOp && oldOp != op)
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throw UsageError("only one operation may be specified");
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if (!op) throw UsageError("no operation specified");
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return true;
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});
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if (op != opDump && op != opRestore) /* !!! hack */
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store = openStore(op != opGC);
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if (!op) throw UsageError("no operation specified");
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op(opFlags, opArgs);
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if (op != opDump && op != opRestore) /* !!! hack */
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store = openStore(op != opGC);
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op(opFlags, opArgs);
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});
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}
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string programId = "nix-store";
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