C++ KeySet::lookup方法代码示例

int GetCommand::execute (Cmdline const & cl)
{
	if (cl.arguments.size () != 1) throw invalid_argument ("Need one argument");

	KeySet conf;

	kdb::Key root = cl.createKey (0);
	kdb::KDB kdb (root);

	std::string n;
	if (cl.all)
	{
		n = root.getName ();
		root.setName ("/");
	}

	kdb.get (conf, root);

	if (cl.all)
	{
		root.setName (n);
	}

	// do a lookup without tracer to warm up default cache
	conf.lookup (root);

	root.setCallback (warnOnMeta);
	if (cl.verbose)
	{
		cout << "got " << conf.size () << " keys" << std::endl;
		root.setCallback (printTrace);
	}
	Key k = conf.lookup (root);

	int ret = 0;

	if (k)
	{
		if (cl.verbose)
		{
			cout << "The resulting keyname is " << k.getName () << std::endl;
		}
		cout << k.getString ();
	}
	else
	{
		cerr << "Did not find key";
		ret = 1;
	}

	if (!cl.noNewline)
	{
		cout << endl;
	}

	printWarnings (cerr, root);
	printError (cerr, root);

	return ret;
}

/**
 * @brief give info about current mounted backends
 *
 * @param mountConf a keyset that contains everything below
 * Backends::mountpointsPath
 *
 * @return an vector of information about mounted backends
 */
Backends::BackendInfoVector Backends::getBackendInfo (KeySet mountConf)
{
	std::vector<BackendInfo> ret;
	Key rootKey (Backends::mountpointsPath, KEY_END);
	Key cur;

	mountConf.rewind ();
	while ((cur = mountConf.next ()))
	{
		if (cur.isDirectBelow (rootKey))
		{
			BackendInfo bi;

			Key path = mountConf.lookup (cur.getName () + "/config/path");
			if (path)
			{
				bi.path = path.getString ();
			}
			Key mp = mountConf.lookup (cur.getName () + "/mountpoint");
			if (mp)
			{
				bi.mountpoint = mp.getString ();
			}
			bi.name = cur.getBaseName ();

			ret.push_back (bi);
		}
	}
	return ret;
}

	TypeChecker(KeySet config)
	{
		enforce = config.lookup("/enforce");
		Key k = config.lookup("/require_version");
		if (k && k.getString() != "2") throw "Required Version does not match 2";

		types.insert (pair<string, Type*>("short", new MType<kdb::short_t>()));
		types.insert (pair<string, Type*>("unsigned_short", new MType<kdb::unsigned_short_t>()));
		types.insert (pair<string, Type*>("long", new MType<kdb::long_t>()));
		types.insert (pair<string, Type*>("unsigned_long", new MType<kdb::unsigned_long_t>()));
		types.insert (pair<string, Type*>("long_long", new MType<kdb::long_long_t>()));
		types.insert (pair<string, Type*>("unsigned_long_long", new MType<kdb::unsigned_long_long_t>()));

		types.insert (pair<string, Type*>("float", new TType<kdb::float_t>()));
		types.insert (pair<string, Type*>("double", new TType<kdb::double_t>()));
		types.insert (pair<string, Type*>("long_double", new TType<kdb::long_double_t>()));
		types.insert (pair<string, Type*>("char", new TType<kdb::char_t>()));
		types.insert (pair<string, Type*>("boolean", new TType<kdb::boolean_t>()));
		types.insert (pair<string, Type*>("octet", new TType<kdb::octet_t>()));

		// non-standard types (deprecated, just for
		// compatibility):
		types.insert (pair<string, Type*>("any", new AnyType()));
		types.insert (pair<string, Type*>("empty", new EmptyType()));
		types.insert (pair<string, Type*>("FSType", new FSType()));
		types.insert (pair<string, Type*>("string", new StringType()));
	}

TEST (test_contextual_policy, setPolicy)
{
	using namespace kdb;
	KeySet ks;
	Context c;
	// clang-format off
	ContextualValue<int, SetPolicyIs<MySetPolicy<int>>> cv
		(ks, c, Key("/test",
			KEY_CASCADING_NAME,
			KEY_VALUE, "/test",
			KEY_META, "default", "88",
			KEY_END));
	// clang-format on
	EXPECT_EQ (cv, 88);
	EXPECT_EQ (cv, 88);
	EXPECT_TRUE (ks.lookup ("/test")) << "did not find /test";
	EXPECT_FALSE (ks.lookup ("dir/test")) << "found dir/test wrongly";
	cv = 40;
	EXPECT_EQ (cv, 40);
	cv.syncKeySet ();
	EXPECT_EQ (cv, 40);
	// TODO: setPolicy not working correctly
	EXPECT_TRUE (ks.lookup ("/test")) << "did not find /test";
	EXPECT_TRUE (ks.lookup ("dir/test")) << "could not find dir/test";
}

std::vector<PluginSpec> PluginVariantDatabase::getPluginVariantsFromSysconf (PluginSpec const & whichplugin, KeySet const & sysconf,
									     KeySet const & genconfToIgnore) const
{
	std::vector<PluginSpec> result;

	KeySet ksSysconf (sysconf);

	// first find possible variants
	Key kVariantBase ("system/elektra/plugins", KEY_END);
	kVariantBase.addBaseName (whichplugin.getName ());
	kVariantBase.addBaseName ("variants");

	KeySet ksPluginVariantSysconf (ksSysconf.cut (kVariantBase));
	KeySet ksToIterate (ksPluginVariantSysconf);
	for (auto kCurrent : ksToIterate)
	{
		Key kCurrentTest (kVariantBase);
		kCurrentTest.addBaseName (kCurrent.getBaseName ());
		if (kCurrentTest == kCurrent)
		{
			PluginSpec variant (whichplugin);
			KeySet ksVariantConfToAdd;

			// new base for plugin conf
			Key kVariantPluginConf ("system/", KEY_END);

			// add system conf for plugin variant
			Key kVariantSysconf (this->buildVariantSysconfKey (whichplugin, kCurrent.getBaseName (), "config"));
			this->addKeysBelowKeyToConf (kVariantSysconf, ksPluginVariantSysconf, kVariantPluginConf, ksVariantConfToAdd);

			// check if the variant was disabled : system/elektra/plugins/simpleini/variants/space/disable
			Key kDisable = sysconf.lookup (this->buildVariantSysconfKey (whichplugin, kCurrent.getBaseName (), "disable"));
			if (kDisable && kDisable.getString () == "1")
			{
				continue; // skip this variant
			}

			// check if the variant is in the genconfToIgnore list
			Key kGenconfVariant (kVariantPluginConf);
			kGenconfVariant.addBaseName (kCurrent.getBaseName ());
			Key kIgnore = genconfToIgnore.lookup (kGenconfVariant);
			if (kIgnore)
			{
				continue; // this variant was added by genconf already
			}

			if (ksVariantConfToAdd.size () == 0)
			{
				continue; // no config means no variant
			}

			variant.appendConfig (ksVariantConfToAdd);
			result.push_back (variant);
		}
	}

	return result;
}

std::vector<PluginSpec> PluginVariantDatabase::getPluginVariantsFromGenconf (PluginSpec const & whichplugin, KeySet const & genconf,
									     KeySet const & sysconf) const
{
	std::vector<PluginSpec> result;

	KeySet ksToIterate (genconf);
	for (auto kCurrent : ksToIterate)
	{
		Key kCurrentTest (kCurrent.getNamespace () + "/", KEY_END);
		kCurrentTest.addBaseName (kCurrent.getBaseName ()); // e.g. system/space
		if (kCurrentTest == kCurrent)
		{
			PluginSpec variant (whichplugin);
			KeySet ksVariantConfToAdd;

			// new base for plugin conf
			Key kVariantPluginConf ("system/", KEY_END);

			// take variant config from genconf and transform it to proper plugin conf,
			// e.g. system/space/config/format -> system/format
			Key kVariantConf (kCurrentTest);
			kVariantConf.addBaseName ("config"); // e.g. system/space/config
			this->addKeysBelowKeyToConf (kVariantConf, genconf, kVariantPluginConf, ksVariantConfToAdd);

			// TODO plugin infos

			// check if the variant was disabled : system/elektra/plugins/simpleini/variants/space/disable
			Key kDisable = sysconf.lookup (this->buildVariantSysconfKey (whichplugin, kCurrent.getBaseName (), "disable"));
			if (kDisable && kDisable.getString () == "1")
			{
				continue; // skip this variant
			}

			// check if an override is available : system/elektra/plugins/simpleini/variants/space/override
			Key kOverride = sysconf.lookup (this->buildVariantSysconfKey (whichplugin, kCurrent.getBaseName (), "override"));
			if (kOverride && kOverride.getString () == "1")
			{
				// first delete config from genconf entirely
				ksVariantConfToAdd.clear ();
				Key kVariantSysconf (this->buildVariantSysconfKey (whichplugin, kCurrent.getBaseName (), "config"));
				this->addKeysBelowKeyToConf (kVariantSysconf, sysconf, kVariantPluginConf, ksVariantConfToAdd);
			}

			if (ksVariantConfToAdd.size () == 0)
			{
				continue; // no config means no variant
			}

			variant.appendConfig (ksVariantConfToAdd);
			result.push_back (variant);
		}
	}

	std::vector<PluginSpec> resFromSysconf (this->getPluginVariantsFromSysconf (whichplugin, sysconf, genconf));
	result.insert (result.end (), resFromSysconf.begin (), resFromSysconf.end ());

	return result;
}

	Point operator() (KeySet const & ks, std::string const & name, option_t const options) const
	{
		Key x = ks.lookup (name + "/x", options);
		if (!x) throw KeyNotFoundException (name + "/x not found");
		Key y = ks.lookup (name + "/y", options);
		if (!y) throw KeyNotFoundException (name + "/y not found");

		return Point (x.get<int> (), y.get<int> ());
	}

SpecBackendBuilder SpecMountpointReader::readMountpointSpecification (KeySet const & cks)
{
	ks = cks;
	mp = ks.head ().dup ();

	Key rmp (mp.dup ());
	helper::removeNamespace (rmp);

	bb.setMountpoint (rmp, mountConf);

	processKey (mp);
	bb.nodes++; // count mp

	ks.lookup (mp, KDB_O_POP);

	ks.rewind (); // we need old fashioned loop, because it can handle ks.cut during iteration
	for (Key k = ks.next (); k; k = ks.next ())
	{
		// search for mountpoint
		Key m = k.getMeta<const Key> ("mountpoint");
		if (m)
		{
			SpecMountpointReader smr (backends, bbi);
			backends[k] = smr.readMountpointSpecification (ks.cut (k));
			continue;
		}

		processKey (k);
		bb.nodes++;
	}

	bb.setBackendConfig (backendConfig);
	bb.useConfigFile (mp.getMeta<std::string> ("mountpoint"));
	return bb;
}

void TestCommand::doBasicTest ()
{
	{
		KDB kdb;
		Key t = root.dup ();
		t.addBaseName ("basic");
		t.setString ("BasicString");
		KeySet basic;
		basic.append (t);

		KeySet test;
		kdb.get (test, root);
		kdb.set (basic, root);
	}

	{
		KDB kdb;
		Key t = root.dup ();
		t.addBaseName ("basic");
		t.setString ("BasicString");

		KeySet test;
		kdb.get (test, root);

		nrTest++;
		if (!test.lookup (t))
		{
			nrError++;
			cerr << "Basic test failed" << endl;
		}
	}
}

int MetaRemoveCommand::execute (Cmdline const & cl)
{
	if (cl.arguments.size () != 2)
	{
		throw invalid_argument ("Need 2 arguments");
	}
	Key parentKey = cl.createKey (0);
	string metaname = cl.arguments[1];

	KeySet conf;
	kdb.get (conf, parentKey);
	printWarnings (cerr, parentKey);

	Key k = conf.lookup (parentKey);

	if (!k)
	{
		cerr << "Key not found" << endl;
		return 1;
	}

	k.delMeta (metaname);

	kdb.set (conf, parentKey);

	return 0;
}

void test_kdbGetSet()
{
	cout << "testing kdbSet() and kdbGet()" << endl;

	{
		KeySet ks_set (5,
			*Key ("user/tests/key3", KEY_DIR, KEY_END),
			*Key ("user/tests/key3/1", KEY_END),
			*Key ("user/tests/key3/2", KEY_END),
			*Key ("user/tests/key3/3", KEY_VALUE, "value", KEY_END),
			KS_END);
		KeySet ks;
		KDB kdb;
		kdb.get (ks, "user/tests/key3");
		ks.append(ks_set);
		kdb.set (ks, "user/tests/key3");
	}

	// check if they were written
	{
		KDB kdb;
		KeySet ks;
		kdb.get (ks, "user/tests/key3");
		exit_if_fail(ks.lookup("user/tests/key3/3"), "could not find previously written key");
		succeed_if(ks.lookup("user/tests/key3/3").get<std::string>() == "value", "could not get value");
		succeed_if(!ks.lookup("user/tests/key3/3").needSync(), "should not need sync");
	}

	// now remove keys (cleanup)
	{
		KeySet ks;
		KDB kdb;
		kdb.get (ks, "user/tests/key3");
		ks.cut(Key("user/tests/key3", KEY_END));
		kdb.set (ks, "user/tests/key3");
	}

	// check if its gone now
	{
		KDB kdb;
		KeySet ks;
		kdb.get (ks, "user/tests/key3");
		succeed_if(!ks.lookup("user/tests/key3/3"), "key was not removed");
	}

}

TEST_F (AutoMergeStrategyTest, EqualsModifyMerges)
{
	task.theirs.lookup ("user/parentt/config/key1").setString ("modifiedvalue");
	Key conflictKey = mergeKeys.lookup (mk1);
	result.addConflict (conflictKey, CONFLICT_SAME, CONFLICT_MODIFY);
	conflictKey = result.getConflictSet ().at (0);

	strategy.resolveConflict (task, conflictKey, result);

	EXPECT_FALSE (result.hasConflicts ()) << "Invalid conflict detected";
	KeySet merged = result.getMergedKeys ();
	EXPECT_EQ (4, merged.size ());

	EXPECT_EQ (mk1, merged.lookup (mk1));
	EXPECT_EQ ("modifiedvalue", merged.lookup (mk1).getString ()) << "Key " << merged.lookup (mk1) << "was not modified correctly";

	compareAllExceptKey1 (merged);
}

void TestCommand::doStringTest ()
{
	vector<string> teststrings;
	teststrings.push_back ("");
	teststrings.push_back ("value");
	teststrings.push_back ("value with spaces");
	teststrings.push_back (" a very long value with many spaces and basically very very long, but only text ... ");
	for (int i = 1; i < 256; ++i)
		teststrings.back () += " very very long, but only text ... ";


	for (auto & teststring : teststrings)
	{
		{
			KDB kdb;
			Key t = root.dup ();
			t.addBaseName ("string");
			t.setString (teststring);

			KeySet basic;
			basic.append (t);

			KeySet test;
			kdb.get (test, root);
			kdb.set (basic, root);
		}

		{
			KDB kdb;

			KeySet test;
			kdb.get (test, root);

			Key t = root.dup ();
			t.addBaseName ("string");

			Key res = test.lookup (t);

			nrTest++;
			if (!res)
			{
				nrError++;
				cerr << "String test failed (key not found)" << t.getName () << endl;
				continue;
			}

			nrTest++;
			if (res.getString () != teststring)
			{
				nrError++;
				cerr << "String test failed (value is not equal)" << endl;
				cerr << "We got: \"" << res.getString () << "\"" << endl;
				cerr << "We wanted: \"" << teststring << "\"" << endl;
			}
		}
	}
}

TEST (test_contextual_nocontext, integer)
{
	using namespace kdb;
	KeySet ks;
	NoContext c;
	const char * name = "/%language%/%country%/%dialect%/test";
	ASSERT_TRUE (!ks.lookup (name));
	Value<int, ContextPolicyIs<NoContext>> i (ks, c, Key (name, KEY_CASCADING_NAME, KEY_META, "default", s_value, KEY_END));
	ASSERT_EQ (i, i_value);
	ASSERT_TRUE (ks.lookup (name));
	i = 5;
	ASSERT_EQ (i, 5);
	ASSERT_EQ (i.getSpec ().getName (), name);
	i.syncKeySet ();
	ASSERT_EQ (ks.lookup (name).getString (), "5");
	i = 10;
	ASSERT_EQ (i, 10);
	ASSERT_EQ (ks.lookup (name).getString (), "10");
}

int MetaSetCommand::execute (Cmdline const & cl)
{
	if (cl.arguments.size () < 2 || cl.arguments.size () > 3)
	{
		throw invalid_argument ("Need 2 or 3 arguments");
	}
	string metaname = cl.arguments[1];

	Key parentKey = cl.createKey (0);
	string keyname = parentKey.getName ();
	if (keyname[0] == '/')
	{
		// fix name for lookup
		keyname = "spec" + keyname;
		if (!cl.quiet) std::cout << "Using keyname " << keyname << std::endl;

		// fix k for kdb.set later
		parentKey.setName (keyname);
	}

	KeySet conf;
	kdb.get (conf, parentKey);
	Key k = conf.lookup (parentKey);

	if (!k)
	{
		k = Key (keyname, KEY_END);
		// k.setBinary(0, 0); // conceptually maybe better, but would have confusing "binary" metadata
		conf.append (k);
		if (cl.verbose) cout << "Creating key " << keyname << endl;
	}
	if (!k.isValid ())
	{
		cerr << "Could not create key " << keyname << endl;
		return 1;
	}

	if (cl.arguments.size () == 2)
	{
		if (!cl.quiet) cout << "Only two arguments, thus deleting metaname " << metaname << endl;
		k.delMeta (metaname);
	}
	else
	{
		std::string metavalue = cl.arguments[2];
		if (metaname == "atime" || metaname == "mtime" || metaname == "ctime")
		{
			stringstream str (metavalue);
			time_t t;
			str >> t;
			if (!str.good ()) throw "conversion failure";
			k.setMeta<time_t> (metaname, t);
		}
		else
		{