Package: support for variants
- Catalog keeps a map from variant IDs to packages - Package caches its ID - Refreshing a catalog updates existing Package instances Dropping a package from a Catalog will now warn, need to decide a real policy for this scenario.
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@ -244,19 +244,47 @@ void Catalog::parseProps(const SGPropertyNode* aProps)
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{
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// copy everything except package children?
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m_props = new SGPropertyNode;
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m_variantDict.clear(); // will rebuild during parse
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std::set<PackageRef> orphans;
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orphans.insert(m_packages.begin(), m_packages.end());
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int nChildren = aProps->nChildren();
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for (int i = 0; i < nChildren; i++) {
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const SGPropertyNode* pkgProps = aProps->getChild(i);
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if (strcmp(pkgProps->getName(), "package") == 0) {
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PackageRef p = new Package(pkgProps, this);
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m_packages.push_back(p);
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PackageRef p = getPackageById(pkgProps->getStringValue("id"));
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if (p) {
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// existing package
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p->updateFromProps(pkgProps);
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orphans.erase(p); // not an orphan
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} else {
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// new package
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p = new Package(pkgProps, this);
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m_packages.push_back(p);
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}
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string_list vars(p->variants());
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for (string_list::iterator it = vars.begin(); it != vars.end(); ++it) {
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m_variantDict[*it] = p.ptr();
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}
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} else {
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SGPropertyNode* c = m_props->getChild(pkgProps->getName(), pkgProps->getIndex(), true);
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copyProperties(pkgProps, c);
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}
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} // of children iteration
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if (!orphans.empty()) {
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SG_LOG(SG_GENERAL, SG_WARN, "have orphan packages: will become inaccesible");
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std::set<PackageRef>::iterator it;
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for (it = orphans.begin(); it != orphans.end(); ++it) {
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SG_LOG(SG_GENERAL, SG_WARN, "\torphan package:" << (*it)->qualifiedId());
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PackageList::iterator pit = std::find(m_packages.begin(), m_packages.end(), *it);
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assert(pit != m_packages.end());
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m_packages.erase(pit);
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}
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}
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if (!m_url.empty()) {
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if (m_url != m_props->getStringValue("url")) {
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// this effectively allows packages to migrate to new locations,
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@ -280,13 +308,13 @@ void Catalog::parseProps(const SGPropertyNode* aProps)
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PackageRef Catalog::getPackageById(const std::string& aId) const
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{
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BOOST_FOREACH(PackageRef p, m_packages) {
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if (p->id() == aId) {
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return p;
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}
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}
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return NULL; // not found
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// search the variant dict here, so looking up aircraft variants
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// works as expected.
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PackageWeakMap::const_iterator it = m_variantDict.find(aId);
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if (it == m_variantDict.end())
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return NULL;
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return it->second;
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}
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std::string Catalog::id() const
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@ -51,7 +51,7 @@ typedef SGSharedPtr<Install> InstallRef;
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typedef std::vector<PackageRef> PackageList;
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typedef std::vector<CatalogRef> CatalogList;
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class Catalog : public SGReferenced
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class Catalog : public SGReferenced
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{
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public:
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virtual ~Catalog();
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@ -140,9 +140,12 @@ private:
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SGPropertyNode_ptr m_props;
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SGPath m_installRoot;
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std::string m_url;
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PackageList m_packages;
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time_t m_retrievedTime;
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typedef std::map<std::string, Package*> PackageWeakMap;
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PackageWeakMap m_variantDict;
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// important that this is a weak-ref to Installs,
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// since it is only cleaned up in the Install destructor
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@ -46,6 +46,14 @@ void Package::initWithProps(const SGPropertyNode* aProps)
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std::string t(c->getStringValue());
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m_tags.insert(boost::to_lower_copy(t));
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}
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m_id = m_props->getStringValue("id");
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}
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void Package::updateFromProps(const SGPropertyNode* aProps)
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{
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m_tags.clear();
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initWithProps(aProps);
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}
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bool Package::matches(const SGPropertyNode* aFilter) const
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@ -133,7 +141,7 @@ InstallRef Package::existingInstall() const
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std::string Package::id() const
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{
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return m_props->getStringValue("id");
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return m_id;
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}
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std::string Package::qualifiedId() const
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@ -241,6 +249,34 @@ PackageList Package::dependencies() const
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return result;
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}
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string_list Package::variants() const
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{
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string_list result;
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result.push_back(id());
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BOOST_FOREACH(SGPropertyNode* var, m_props->getChildren("variant")) {
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result.push_back(var->getStringValue("id"));
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}
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return result;
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}
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std::string Package::nameForVariant(const std::string& vid) const
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{
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if (vid == id()) {
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return name();
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}
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BOOST_FOREACH(SGPropertyNode* var, m_props->getChildren("variant")) {
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if (vid == var->getStringValue("id")) {
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return var->getStringValue("name");
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}
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}
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throw sg_exception("Unknow variant +" + vid + " in package " + id());
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}
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} // of namespace pkg
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} // of namespace simgear
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@ -60,6 +60,12 @@ public:
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std::string id() const;
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/**
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* Variant IDs. Note the primary ID will always be included as
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* variants()[0], to simplify enumerating all variants
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*/
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string_list variants() const;
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/**
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* Fully-qualified ID, including our catalog'd ID
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*/
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@ -70,7 +76,12 @@ public:
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* although this is not ruled out for the future.
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*/
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std::string name() const;
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/**
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* Human readable name of a variant
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*/
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std::string nameForVariant(const std::string& vid) const;
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/**
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* syntactic sugar to get the localised description
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*/
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@ -118,10 +129,13 @@ private:
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Package(const SGPropertyNode* aProps, CatalogRef aCatalog);
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void initWithProps(const SGPropertyNode* aProps);
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void updateFromProps(const SGPropertyNode* aProps);
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std::string getLocalisedString(const SGPropertyNode* aRoot, const char* aName) const;
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SGPropertyNode_ptr m_props;
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std::string m_id;
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string_set m_tags;
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CatalogRef m_catalog;
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};
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