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* Support multiple outputs in nix-store (specifically the ‘--query’ 

and ‘--realise’ actions).
This commit is contained in:
Eelco Dolstra 2011-12-30 17:25:19 +00:00
parent a71d02440b
commit 93b56acb2d
1 changed files with 63 additions and 43 deletions
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106
src/nix-store/nix-store.cc
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@ -50,26 +50,30 @@ static Path useDeriver(Path path)
}
/* Realisation the given path. For a derivation that means build it;
for other paths it means ensure their validity. */
static Path realisePath(const Path & path)
/* Realise the given path. For a derivation that means build it; for
other paths it means ensure their validity. */
static PathSet realisePath(const Path & path)
{
if (isDerivation(path)) {
PathSet paths;
paths.insert(path);
store->buildDerivations(paths);
Path outPath = findOutput(derivationFromPath(*store, path), "out");
if (gcRoot == "")
printGCWarning();
else
outPath = addPermRoot(*store, outPath,
makeRootName(gcRoot, rootNr), indirectRoot);
return outPath;
} else {
store->buildDerivations(singleton<PathSet>(path));
Derivation drv = derivationFromPath(*store, path);
PathSet outputs;
foreach (DerivationOutputs::iterator, i, drv.outputs) {
Path outPath = i->second.path;
if (gcRoot == "")
printGCWarning();
else
outPath = addPermRoot(*store, outPath,
makeRootName(gcRoot, rootNr), indirectRoot);
outputs.insert(outPath);
}
return outputs;
}
else {
store->ensurePath(path);
return path;
return singleton<PathSet>(path);
}
}
@ -96,8 +100,11 @@ static void opRealise(Strings opFlags, Strings opArgs)
if (isDerivation(*i)) drvPaths.insert(*i);
store->buildDerivations(drvPaths);
foreach (Strings::iterator, i, opArgs)
cout << format("%1%\n") % realisePath(*i);
foreach (Strings::iterator, i, opArgs) {
PathSet paths = realisePath(*i);
foreach (PathSet::iterator, j, paths)
cout << format("%1%\n") % *j;
}
}
@ -157,14 +164,17 @@ static void opPrintFixedPath(Strings opFlags, Strings opArgs)
}
static Path maybeUseOutput(const Path & storePath, bool useOutput, bool forceRealise)
static PathSet maybeUseOutputs(const Path & storePath, bool useOutput, bool forceRealise)
{
if (forceRealise) realisePath(storePath);
if (useOutput && isDerivation(storePath)) {
Derivation drv = derivationFromPath(*store, storePath);
return findOutput(drv, "out");
PathSet outputs;
foreach (DerivationOutputs::iterator, i, drv.outputs)
outputs.insert(i->second.path);
return outputs;
}
else return storePath;
else return singleton<PathSet>(storePath);
}
@ -257,7 +267,8 @@ static void opQuery(Strings opFlags, Strings opArgs)
*i = followLinksToStorePath(*i);
if (forceRealise) realisePath(*i);
Derivation drv = derivationFromPath(*store, *i);
cout << format("%1%\n") % findOutput(drv, "out");
foreach (DerivationOutputs::iterator, j, drv.outputs)
cout << format("%1%\n") % j->second.path;
}
break;
}
@ -268,11 +279,13 @@ static void opQuery(Strings opFlags, Strings opArgs)
case qReferrersClosure: {
PathSet paths;
foreach (Strings::iterator, i, opArgs) {
Path path = maybeUseOutput(followLinksToStorePath(*i), useOutput, forceRealise);
if (query == qRequisites) computeFSClosure(*store, path, paths, false, includeOutputs);
else if (query == qReferences) store->queryReferences(path, paths);
else if (query == qReferrers) store->queryReferrers(path, paths);
else if (query == qReferrersClosure) computeFSClosure(*store, path, paths, true);
PathSet ps = maybeUseOutputs(followLinksToStorePath(*i), useOutput, forceRealise);
foreach (PathSet::iterator, j, ps) {
if (query == qRequisites) computeFSClosure(*store, *j, paths, false, includeOutputs);
else if (query == qReferences) store->queryReferences(*j, paths);
else if (query == qReferrers) store->queryReferrers(*j, paths);
else if (query == qReferrersClosure) computeFSClosure(*store, *j, paths, true);
}
}
Paths sorted = topoSortPaths(*store, paths);
for (Paths::reverse_iterator i = sorted.rbegin();
@ -304,13 +317,15 @@ static void opQuery(Strings opFlags, Strings opArgs)
case qHash:
case qSize:
foreach (Strings::iterator, i, opArgs) {
Path path = maybeUseOutput(followLinksToStorePath(*i), useOutput, forceRealise);
ValidPathInfo info = store->queryPathInfo(path);
if (query == qHash) {
assert(info.hash.type == htSHA256);
cout << format("sha256:%1%\n") % printHash32(info.hash);
} else if (query == qSize)
cout << format("%1%\n") % info.narSize;
PathSet paths = maybeUseOutputs(followLinksToStorePath(*i), useOutput, forceRealise);
foreach (PathSet::iterator, j, paths) {
ValidPathInfo info = store->queryPathInfo(*j);
if (query == qHash) {
assert(info.hash.type == htSHA256);
cout << format("sha256:%1%\n") % printHash32(info.hash);
} else if (query == qSize)
cout << format("%1%\n") % info.narSize;
}
}
break;
@ -323,16 +338,20 @@ static void opQuery(Strings opFlags, Strings opArgs)
case qGraph: {
PathSet roots;
foreach (Strings::iterator, i, opArgs)
roots.insert(maybeUseOutput(followLinksToStorePath(*i), useOutput, forceRealise));
foreach (Strings::iterator, i, opArgs) {
PathSet paths = maybeUseOutputs(followLinksToStorePath(*i), useOutput, forceRealise);
roots.insert(paths.begin(), paths.end());
}
printDotGraph(roots);
break;
}
case qXml: {
PathSet roots;
foreach (Strings::iterator, i, opArgs)
roots.insert(maybeUseOutput(followLinksToStorePath(*i), useOutput, forceRealise));
foreach (Strings::iterator, i, opArgs) {
PathSet paths = maybeUseOutputs(followLinksToStorePath(*i), useOutput, forceRealise);
roots.insert(paths.begin(), paths.end());
}
printXmlGraph(roots);
break;
}
@ -345,10 +364,11 @@ static void opQuery(Strings opFlags, Strings opArgs)
case qRoots: {
PathSet referrers;
foreach (Strings::iterator, i, opArgs)
computeFSClosure(*store,
maybeUseOutput(followLinksToStorePath(*i), useOutput, forceRealise),
referrers, true);
foreach (Strings::iterator, i, opArgs) {
PathSet paths = maybeUseOutputs(followLinksToStorePath(*i), useOutput, forceRealise);
foreach (PathSet::iterator, j, paths)
computeFSClosure(*store, *j, referrers, true);
}
Roots roots = store->findRoots();
foreach (Roots::iterator, i, roots)
if (referrers.find(i->second) != referrers.end())