mirror of
https://github.com/NixOS/nix
synced 2025-06-25 06:31:14 +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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@ -52,24 +52,17 @@ struct Globals
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{
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InstallSourceInfo instSource;
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Path profile;
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EvalState state;
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std::shared_ptr<EvalState> state;
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bool dryRun;
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bool preserveInstalled;
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bool removeAll;
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string forceName;
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bool prebuiltOnly;
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Globals(const Strings & searchPath) : state(searchPath) { }
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};
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typedef void (* Operation) (Globals & globals,
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Strings args, Strings opFlags, Strings opArgs);
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void printHelp()
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{
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showManPage("nix-env");
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}
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Strings opFlags, Strings opArgs);
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static string needArg(Strings::iterator & i,
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@ -467,11 +460,11 @@ static void installDerivations(Globals & globals,
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/* Get the set of user environment elements to be installed. */
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DrvInfos newElems, newElemsTmp;
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queryInstSources(globals.state, globals.instSource, args, newElemsTmp, true);
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queryInstSources(*globals.state, globals.instSource, args, newElemsTmp, true);
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/* If --prebuilt-only is given, filter out source-only packages. */
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foreach (DrvInfos::iterator, i, newElemsTmp)
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if (!globals.prebuiltOnly || isPrebuilt(globals.state, *i))
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if (!globals.prebuiltOnly || isPrebuilt(*globals.state, *i))
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newElems.push_back(*i);
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StringSet newNames;
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@ -494,7 +487,7 @@ static void installDerivations(Globals & globals,
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/* Add in the already installed derivations, unless they have
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the same name as a to-be-installed element. */
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if (!globals.removeAll) {
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DrvInfos installedElems = queryInstalled(globals.state, profile);
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DrvInfos installedElems = queryInstalled(*globals.state, profile);
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foreach (DrvInfos::iterator, i, installedElems) {
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DrvName drvName(i->name);
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@ -510,18 +503,17 @@ static void installDerivations(Globals & globals,
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printMsg(lvlInfo, format("installing `%1%'") % i->name);
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}
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printMissing(globals.state, newElems);
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printMissing(*globals.state, newElems);
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if (globals.dryRun) return;
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if (createUserEnv(globals.state, allElems,
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if (createUserEnv(*globals.state, allElems,
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profile, settings.envKeepDerivations, lockToken)) break;
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}
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}
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static void opInstall(Globals & globals,
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Strings args, Strings opFlags, Strings opArgs)
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static void opInstall(Globals & globals, Strings opFlags, Strings opArgs)
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{
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for (Strings::iterator i = opFlags.begin(); i != opFlags.end(); ) {
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string arg = *i++;
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@ -553,11 +545,11 @@ static void upgradeDerivations(Globals & globals,
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while (true) {
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string lockToken = optimisticLockProfile(globals.profile);
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DrvInfos installedElems = queryInstalled(globals.state, globals.profile);
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DrvInfos installedElems = queryInstalled(*globals.state, globals.profile);
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/* Fetch all derivations from the input file. */
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DrvInfos availElems;
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queryInstSources(globals.state, globals.instSource, args, availElems, false);
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queryInstSources(*globals.state, globals.instSource, args, availElems, false);
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/* Go through all installed derivations. */
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DrvInfos newElems;
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@ -582,7 +574,7 @@ static void upgradeDerivations(Globals & globals,
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foreach (DrvInfos::iterator, j, availElems) {
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DrvName newName(j->name);
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if (newName.name == drvName.name) {
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int d = comparePriorities(globals.state, *i, *j);
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int d = comparePriorities(*globals.state, *i, *j);
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if (d == 0) d = compareVersions(drvName.version, newName.version);
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if ((upgradeType == utLt && d < 0) ||
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(upgradeType == utLeq && d <= 0) ||
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@ -591,10 +583,10 @@ static void upgradeDerivations(Globals & globals,
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{
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int d2 = -1;
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if (bestElem != availElems.end()) {
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d2 = comparePriorities(globals.state, *bestElem, *j);
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d2 = comparePriorities(*globals.state, *bestElem, *j);
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if (d2 == 0) d2 = compareVersions(bestName.version, newName.version);
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}
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if (d2 < 0 && (!globals.prebuiltOnly || isPrebuilt(globals.state, *j))) {
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if (d2 < 0 && (!globals.prebuiltOnly || isPrebuilt(*globals.state, *j))) {
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bestElem = j;
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bestName = newName;
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}
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@ -618,18 +610,17 @@ static void upgradeDerivations(Globals & globals,
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}
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}
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printMissing(globals.state, newElems);
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printMissing(*globals.state, newElems);
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if (globals.dryRun) return;
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if (createUserEnv(globals.state, newElems,
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if (createUserEnv(*globals.state, newElems,
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globals.profile, settings.envKeepDerivations, lockToken)) break;
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}
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}
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static void opUpgrade(Globals & globals,
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Strings args, Strings opFlags, Strings opArgs)
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static void opUpgrade(Globals & globals, Strings opFlags, Strings opArgs)
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{
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UpgradeType upgradeType = utLt;
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for (Strings::iterator i = opFlags.begin(); i != opFlags.end(); ) {
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@ -655,8 +646,7 @@ static void setMetaFlag(EvalState & state, DrvInfo & drv,
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}
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static void opSetFlag(Globals & globals,
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Strings args, Strings opFlags, Strings opArgs)
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static void opSetFlag(Globals & globals, Strings opFlags, Strings opArgs)
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{
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if (opFlags.size() > 0)
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throw UsageError(format("unknown flag `%1%'") % opFlags.front());
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@ -671,7 +661,7 @@ static void opSetFlag(Globals & globals,
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while (true) {
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string lockToken = optimisticLockProfile(globals.profile);
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DrvInfos installedElems = queryInstalled(globals.state, globals.profile);
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DrvInfos installedElems = queryInstalled(*globals.state, globals.profile);
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/* Update all matching derivations. */
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foreach (DrvInfos::iterator, i, installedElems) {
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@ -680,7 +670,7 @@ static void opSetFlag(Globals & globals,
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if (j->matches(drvName)) {
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printMsg(lvlInfo, format("setting flag on `%1%'") % i->name);
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j->hits++;
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setMetaFlag(globals.state, *i, flagName, flagValue);
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setMetaFlag(*globals.state, *i, flagName, flagValue);
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break;
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}
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}
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@ -688,14 +678,13 @@ static void opSetFlag(Globals & globals,
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checkSelectorUse(selectors);
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/* Write the new user environment. */
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if (createUserEnv(globals.state, installedElems,
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if (createUserEnv(*globals.state, installedElems,
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globals.profile, settings.envKeepDerivations, lockToken)) break;
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}
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}
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static void opSet(Globals & globals,
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Strings args, Strings opFlags, Strings opArgs)
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static void opSet(Globals & globals, Strings opFlags, Strings opArgs)
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{
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for (Strings::iterator i = opFlags.begin(); i != opFlags.end(); ) {
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string arg = *i++;
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@ -704,7 +693,7 @@ static void opSet(Globals & globals,
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}
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DrvInfos elems;
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queryInstSources(globals.state, globals.instSource, opArgs, elems, true);
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queryInstSources(*globals.state, globals.instSource, opArgs, elems, true);
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if (elems.size() != 1)
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throw Error("--set requires exactly one derivation");
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@ -715,7 +704,7 @@ static void opSet(Globals & globals,
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PathSet paths = singleton<PathSet>(drv.queryDrvPath());
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printMissing(*store, paths);
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if (globals.dryRun) return;
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store->buildPaths(paths, globals.state.repair ? bmRepair : bmNormal);
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store->buildPaths(paths, globals.state->repair ? bmRepair : bmNormal);
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}
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else {
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printMissing(*store, singleton<PathSet>(drv.queryOutPath()));
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@ -735,7 +724,7 @@ static void uninstallDerivations(Globals & globals, Strings & selectors,
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while (true) {
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string lockToken = optimisticLockProfile(profile);
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DrvInfos installedElems = queryInstalled(globals.state, profile);
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DrvInfos installedElems = queryInstalled(*globals.state, profile);
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DrvInfos newElems;
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foreach (DrvInfos::iterator, i, installedElems) {
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@ -756,14 +745,13 @@ static void uninstallDerivations(Globals & globals, Strings & selectors,
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if (globals.dryRun) return;
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if (createUserEnv(globals.state, newElems,
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if (createUserEnv(*globals.state, newElems,
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profile, settings.envKeepDerivations, lockToken)) break;
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}
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}
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static void opUninstall(Globals & globals,
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Strings args, Strings opFlags, Strings opArgs)
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static void opUninstall(Globals & globals, Strings opFlags, Strings opArgs)
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{
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if (opFlags.size() > 0)
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throw UsageError(format("unknown flag `%1%'") % opFlags.front());
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@ -887,15 +875,14 @@ static void queryJSON(Globals & globals, vector<DrvInfo> & elems)
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cout << "null";
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} else {
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PathSet context;
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printValueAsJSON(globals.state, true, *v, cout, context);
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printValueAsJSON(*globals.state, true, *v, cout, context);
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}
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}
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}
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}
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static void opQuery(Globals & globals,
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Strings args, Strings opFlags, Strings opArgs)
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static void opQuery(Globals & globals, Strings opFlags, Strings opArgs)
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{
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Strings remaining;
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string attrPath;
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@ -916,7 +903,7 @@ static void opQuery(Globals & globals,
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settings.readOnlyMode = true; /* makes evaluation a bit faster */
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for (Strings::iterator i = args.begin(); i != args.end(); ) {
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for (Strings::iterator i = opFlags.begin(); i != opFlags.end(); ) {
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string arg = *i++;
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if (arg == "--status" || arg == "-s") printStatus = true;
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else if (arg == "--no-name") printName = false;
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@ -932,10 +919,9 @@ static void opQuery(Globals & globals,
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else if (arg == "--json") jsonOutput = true;
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else if (arg == "--attr-path" || arg == "-P") printAttrPath = true;
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else if (arg == "--attr" || arg == "-A")
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attrPath = needArg(i, args, arg);
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else if (arg[0] == '-')
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attrPath = needArg(i, opFlags, arg);
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else
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throw UsageError(format("unknown flag `%1%'") % arg);
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else remaining.push_back(arg);
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}
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@ -943,16 +929,16 @@ static void opQuery(Globals & globals,
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DrvInfos availElems, installedElems;
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if (source == sInstalled || compareVersions || printStatus)
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installedElems = queryInstalled(globals.state, globals.profile);
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installedElems = queryInstalled(*globals.state, globals.profile);
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if (source == sAvailable || compareVersions)
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loadDerivations(globals.state, globals.instSource.nixExprPath,
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loadDerivations(*globals.state, globals.instSource.nixExprPath,
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globals.instSource.systemFilter, globals.instSource.autoArgs,
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attrPath, availElems);
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DrvInfos elems_ = filterBySelector(globals.state,
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DrvInfos elems_ = filterBySelector(*globals.state,
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source == sInstalled ? installedElems : availElems,
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remaining, false);
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opArgs, false);
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DrvInfos & otherElems(source == sInstalled ? availElems : installedElems);
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@ -1173,8 +1159,7 @@ static void opQuery(Globals & globals,
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}
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static void opSwitchProfile(Globals & globals,
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Strings args, Strings opFlags, Strings opArgs)
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static void opSwitchProfile(Globals & globals, Strings opFlags, Strings opArgs)
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{
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if (opFlags.size() > 0)
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throw UsageError(format("unknown flag `%1%'") % opFlags.front());
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@ -1222,8 +1207,7 @@ static void switchGeneration(Globals & globals, int dstGen)
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}
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static void opSwitchGeneration(Globals & globals,
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Strings args, Strings opFlags, Strings opArgs)
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static void opSwitchGeneration(Globals & globals, Strings opFlags, Strings opArgs)
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{
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if (opFlags.size() > 0)
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throw UsageError(format("unknown flag `%1%'") % opFlags.front());
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@ -1238,8 +1222,7 @@ static void opSwitchGeneration(Globals & globals,
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}
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static void opRollback(Globals & globals,
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Strings args, Strings opFlags, Strings opArgs)
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static void opRollback(Globals & globals, Strings opFlags, Strings opArgs)
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{
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if (opFlags.size() > 0)
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throw UsageError(format("unknown flag `%1%'") % opFlags.front());
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@ -1250,8 +1233,7 @@ static void opRollback(Globals & globals,
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}
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static void opListGenerations(Globals & globals,
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Strings args, Strings opFlags, Strings opArgs)
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static void opListGenerations(Globals & globals, Strings opFlags, Strings opArgs)
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{
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if (opFlags.size() > 0)
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throw UsageError(format("unknown flag `%1%'") % opFlags.front());
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@ -1288,8 +1270,7 @@ static void deleteGeneration2(Globals & globals, unsigned int gen)
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}
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static void opDeleteGenerations(Globals & globals,
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Strings args, Strings opFlags, Strings opArgs)
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static void opDeleteGenerations(Globals & globals, Strings opFlags, Strings opArgs)
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{
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if (opFlags.size() > 0)
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throw UsageError(format("unknown flag `%1%'") % opFlags.front());
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@ -1348,110 +1329,115 @@ static void opDeleteGenerations(Globals & globals,
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}
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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, remaining;
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Operation op = 0;
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return handleExceptions(argv[0], [&]() {
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initNix();
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/* FIXME: hack. */
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Strings searchPath;
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Strings args2;
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for (Strings::iterator i = args.begin(); i != args.end(); ) {
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string arg = *i++;
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if (!parseSearchPathArg(arg, i, args.end(), searchPath))
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args2.push_back(arg);
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}
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args = args2;
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Strings opFlags, opArgs, searchPath;
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std::map<string, string> autoArgs_;
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Operation op = 0;
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bool repair = false;
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string file;
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Globals globals(searchPath);
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Globals globals;
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globals.instSource.type = srcUnknown;
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globals.instSource.nixExprPath = getDefNixExprPath();
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globals.instSource.systemFilter = "*";
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globals.instSource.type = srcUnknown;
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globals.instSource.nixExprPath = getDefNixExprPath();
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globals.instSource.systemFilter = "*";
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globals.dryRun = false;
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globals.preserveInstalled = false;
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globals.removeAll = false;
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globals.prebuiltOnly = false;
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globals.dryRun = false;
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globals.preserveInstalled = false;
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globals.removeAll = false;
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globals.prebuiltOnly = false;
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for (Strings::iterator i = args.begin(); i != args.end(); ) {
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string arg = *i++;
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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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Operation oldOp = op;
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if (*arg == "--help")
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showManPage("nix-env");
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else if (*arg == "--version")
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printVersion("nix-env");
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else if (*arg == "--install" || *arg == "-i")
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op = opInstall;
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else if (parseAutoArgs(arg, end, autoArgs_))
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;
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else if (parseSearchPathArg(arg, end, searchPath))
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;
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else if (*arg == "--force-name") // undocumented flag for nix-install-package
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globals.forceName = getArg(*arg, arg, end);
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else if (*arg == "--uninstall" || *arg == "-e")
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op = opUninstall;
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else if (*arg == "--upgrade" || *arg == "-u")
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op = opUpgrade;
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else if (*arg == "--set-flag")
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op = opSetFlag;
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else if (*arg == "--set")
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op = opSet;
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else if (*arg == "--query" || *arg == "-q")
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op = opQuery;
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else if (*arg == "--profile" || *arg == "-p")
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globals.profile = absPath(getArg(*arg, arg, end));
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else if (*arg == "--file" || *arg == "-f")
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file = getArg(*arg, arg, end);
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else if (*arg == "--switch-profile" || *arg == "-S")
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op = opSwitchProfile;
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else if (*arg == "--switch-generation" || *arg == "-G")
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op = opSwitchGeneration;
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else if (*arg == "--rollback")
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op = opRollback;
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else if (*arg == "--list-generations")
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op = opListGenerations;
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else if (*arg == "--delete-generations")
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op = opDeleteGenerations;
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else if (*arg == "--dry-run") {
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||||
printMsg(lvlInfo, "(dry run; not doing anything)");
|
||||
globals.dryRun = true;
|
||||
}
|
||||
else if (*arg == "--system-filter")
|
||||
globals.instSource.systemFilter = getArg(*arg, arg, end);
|
||||
else if (*arg == "--prebuilt-only" || *arg == "-b")
|
||||
globals.prebuiltOnly = true;
|
||||
else if (*arg == "--repair")
|
||||
repair = true;
|
||||
else if (*arg != "" && arg->at(0) == '-') {
|
||||
opFlags.push_back(*arg);
|
||||
if (*arg == "--from-profile" || *arg == "--atr" || *arg == "-A") /* !!! hack */
|
||||
opFlags.push_back(getArg(*arg, arg, end));
|
||||
}
|
||||
else
|
||||
opArgs.push_back(*arg);
|
||||
|
||||
if (arg == "--install" || arg == "-i")
|
||||
op = opInstall;
|
||||
else if (parseOptionArg(arg, i, args.end(),
|
||||
globals.state, globals.instSource.autoArgs))
|
||||
;
|
||||
else if (arg == "--force-name") // undocumented flag for nix-install-package
|
||||
globals.forceName = needArg(i, args, arg);
|
||||
else if (arg == "--uninstall" || arg == "-e")
|
||||
op = opUninstall;
|
||||
else if (arg == "--upgrade" || arg == "-u")
|
||||
op = opUpgrade;
|
||||
else if (arg == "--set-flag")
|
||||
op = opSetFlag;
|
||||
else if (arg == "--set")
|
||||
op = opSet;
|
||||
else if (arg == "--query" || arg == "-q")
|
||||
op = opQuery;
|
||||
else if (arg == "--profile" || arg == "-p")
|
||||
globals.profile = absPath(needArg(i, args, arg));
|
||||
else if (arg == "--file" || arg == "-f")
|
||||
globals.instSource.nixExprPath = lookupFileArg(globals.state, needArg(i, args, arg));
|
||||
else if (arg == "--switch-profile" || arg == "-S")
|
||||
op = opSwitchProfile;
|
||||
else if (arg == "--switch-generation" || arg == "-G")
|
||||
op = opSwitchGeneration;
|
||||
else if (arg == "--rollback")
|
||||
op = opRollback;
|
||||
else if (arg == "--list-generations")
|
||||
op = opListGenerations;
|
||||
else if (arg == "--delete-generations")
|
||||
op = opDeleteGenerations;
|
||||
else if (arg == "--dry-run") {
|
||||
printMsg(lvlInfo, "(dry run; not doing anything)");
|
||||
globals.dryRun = true;
|
||||
}
|
||||
else if (arg == "--system-filter")
|
||||
globals.instSource.systemFilter = needArg(i, args, arg);
|
||||
else if (arg == "--prebuilt-only" || arg == "-b")
|
||||
globals.prebuiltOnly = true;
|
||||
else if (arg == "--repair")
|
||||
globals.state.repair = true;
|
||||
else {
|
||||
remaining.push_back(arg);
|
||||
if (arg[0] == '-') {
|
||||
opFlags.push_back(arg);
|
||||
if (arg == "--from-profile") { /* !!! hack */
|
||||
if (i != args.end()) opFlags.push_back(*i++);
|
||||
}
|
||||
} else opArgs.push_back(arg);
|
||||
if (oldOp && oldOp != op)
|
||||
throw UsageError("only one operation may be specified");
|
||||
|
||||
return true;
|
||||
});
|
||||
|
||||
if (!op) throw UsageError("no operation specified");
|
||||
|
||||
globals.state = std::shared_ptr<EvalState>(new EvalState(searchPath));
|
||||
globals.state->repair = repair;
|
||||
|
||||
if (file != "")
|
||||
globals.instSource.nixExprPath = lookupFileArg(*globals.state, file);
|
||||
|
||||
evalAutoArgs(*globals.state, autoArgs_, globals.instSource.autoArgs);
|
||||
|
||||
if (globals.profile == "")
|
||||
globals.profile = getEnv("NIX_PROFILE", "");
|
||||
|
||||
if (globals.profile == "") {
|
||||
Path profileLink = getHomeDir() + "/.nix-profile";
|
||||
globals.profile = pathExists(profileLink)
|
||||
? absPath(readLink(profileLink), dirOf(profileLink))
|
||||
: canonPath(settings.nixStateDir + "/profiles/default");
|
||||
}
|
||||
|
||||
if (oldOp && oldOp != op)
|
||||
throw UsageError("only one operation may be specified");
|
||||
}
|
||||
store = openStore();
|
||||
|
||||
if (!op) throw UsageError("no operation specified");
|
||||
op(globals, opFlags, opArgs);
|
||||
|
||||
if (globals.profile == "")
|
||||
globals.profile = getEnv("NIX_PROFILE", "");
|
||||
|
||||
if (globals.profile == "") {
|
||||
Path profileLink = getHomeDir() + "/.nix-profile";
|
||||
globals.profile = pathExists(profileLink)
|
||||
? absPath(readLink(profileLink), dirOf(profileLink))
|
||||
: canonPath(settings.nixStateDir + "/profiles/default");
|
||||
}
|
||||
|
||||
store = openStore();
|
||||
|
||||
op(globals, remaining, opFlags, opArgs);
|
||||
|
||||
globals.state.printStats();
|
||||
globals.state->printStats();
|
||||
});
|
||||
}
|
||||
|
||||
|
||||
string programId = "nix-env";
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue