X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fcollection.cpp;h=c168d8abd002a5bd82134914a9ee9205a1ab06fb;hb=256b44a5009467171af53316141277027bcc0ba4;hp=a16ae5a9dc2e7a9f70f638093348b59c8bd561eb;hpb=495920e971324d29bd4933b8a319fb5668ca5562;p=libs%2Fdatafile.git

diff --git a/source/collection.cpp b/source/collection.cpp
index a16ae5a..c168d8a 100644
--- a/source/collection.cpp
+++ b/source/collection.cpp
@@ -1,3 +1,5 @@
+#include <set>
+#include <msp/core/algorithm.h>
 #include "collection.h"
 
 using namespace std;
@@ -5,44 +7,168 @@ using namespace std;
 namespace Msp {
 namespace DataFile {
 
+Collection::Collection():
+	fallback(0)
+{ }
+
 Collection::~Collection()
 {
-	for(TypeList::iterator i = types.begin(); i!=types.end(); ++i)
-		delete *i;
+	for(CollectionItemTypeBase *t: types)
+		delete t;
+}
+
+void Collection::add_var(const string &name, const CollectionItemTypeBase *type, const Variant &var)
+{
+	insert_unique(items, name, var);
+	if(type)
+		type->notify_item(*this, name, var);
+}
+
+const Variant &Collection::get_var(const string &name, const CollectionItemTypeBase *type)
+{
+	const Variant *var = find_var(name, type);
+	if(var)
+		return *var;
+
+	throw key_error(name);
 }
 
-void Collection::add_future(const std::string &name)
+const Variant *Collection::find_var(const string &name, const CollectionItemTypeBase *type)
 {
-	if(items.count(name))
-		throw key_error(typeid(ItemMap));
+	ItemMap::iterator i = items.find(name);
+	if(i!=items.end())
+		return &i->second;
 
-	for(TypeList::const_iterator i=types.begin(); i!=types.end(); ++i)
-		if((*i)->match_name(name))
+	if(type)
+	{
+		bool loaded = false;
+		if(type->can_create())
 		{
-			items.insert(ItemMap::value_type(name, (*i)->create_future()));
-			return;
+			type->create_item(*this, name);
+			loaded = items.count(name);
 		}
+		for(auto j=sources.begin(); (!loaded && j!=sources.end()); ++j)
+		{
+			(*j)->load(*this, *type, name);
+			loaded = items.count(name);
+		}
+		if(!loaded && fallback)
+			if(CollectionItemTypeBase *fb_type = fallback->get_type(*type))
+				if(fallback->get_status(name, *fb_type))
+					return fallback->find_var(name, fb_type);
+	}
 
-	/* XXX throw something?  If we do, DirectoryCollection needs some way to
-	check if a name matches any item type. */
+	i = items.find(name);
+	return (i!=items.end() ? &i->second : 0);
+}
+
+void Collection::gather_items(vector<const Variant *> *vars, list<string> *names, const CollectionItemTypeBase &type, bool include_sources) const
+{
+	for(const auto &kvp: items)
+		if(type.check_item_type(kvp.second))
+		{
+			if(vars)
+				vars->push_back(&kvp.second);
+			if(names)
+				names->push_back(kvp.first);
+		}
+
+	if(include_sources && names)
+		gather_names_from_sources(*names, type);
+}
+
+unsigned Collection::get_status(const string &name, const CollectionItemTypeBase &type) const
+{
+	ItemMap::const_iterator i = items.find(name);
+	if(i==items.end())
+	{
+		auto j = find_if(sources, [&name, &type](const CollectionSource *s){ return s->is_loadable(type, name); });
+		if(j!=sources.end())
+			return 2;
+		if(fallback)
+			if(CollectionItemTypeBase *fb_type = fallback->get_type(type))
+				return fallback->get_status(name, *fb_type);
+		return 0;
+	}
+
+	return type.check_item_type(i->second);
+}
+
+CollectionItemTypeBase *Collection::get_type(const CollectionItemTypeBase &type) const
+{
+	for(CollectionItemTypeBase *t: types)
+		if(t->is_same_type(type))
+			return t;
+	return 0;
+}
+
+CollectionItemTypeBase *Collection::get_type_for_item(const Variant &var) const
+{
+	for(CollectionItemTypeBase *t: types)
+		if(t->check_item_type(var))
+			return t;
+	return 0;
+}
+
+void Collection::add_source(const CollectionSource &s)
+{
+	sources.push_back(&s);
+}
+
+IO::Seekable *Collection::open_raw(const string &name) const
+{
+	for(const CollectionSource *s: sources)
+		if(IO::Seekable *io = s->open(name))
+			return io;
+
+	return 0;
+}
+
+void Collection::gather_names_from_sources(list<string> &names, const CollectionItemTypeBase &type) const
+{
+	set<string> new_names;
+	for(const CollectionSource *s: sources)
+		for(const string &n: s->get_names(type))
+			if(!items.count(n))
+				new_names.insert(n);
+	names.insert(names.end(), new_names.begin(), new_names.end());
+}
+
+void Collection::load_items_from_sources(const CollectionItemTypeBase &type)
+{
+	for(const CollectionSource *s: sources)
+		for(const string &n: s->get_names(type))
+			if(!items.count(n))
+			{
+				bool loaded = false;
+				if(type.can_create())
+				{
+					type.create_item(*this, n);
+					loaded = items.count(n);
+				}
+				if(!loaded)
+					s->load(*this, type, n);
+			}
+}
+
+void Collection::set_fallback(Collection *f)
+{
+	fallback = f;
 }
 
 
 Collection::Loader::Loader(Collection &c):
 	coll(c)
 {	
-	for(TypeList::const_iterator i = coll.types.begin(); i!=coll.types.end(); ++i)
-		(*i)->add_to_loader(*this);
+	for(const CollectionItemTypeBase *t: coll.types)
+		t->add_to_loader(*this);
 }
 
 
-CollectionItemTypeBase::CollectionItemTypeBase():
-	tag(0)
-{ }
-
 CollectionItemTypeBase::~CollectionItemTypeBase()
 {
-	delete tag;
+	for(ExtractorBase *e: extractors)
+		delete e;
 }
 
 void CollectionItemTypeBase::set_keyword(const string &k)
@@ -59,8 +185,8 @@ void CollectionItemTypeBase::add_suffix(const string &s)
 
 bool CollectionItemTypeBase::match_name(const string &name) const
 {
-	for(vector<string>::const_iterator i=suffixes.begin(); i!=suffixes.end(); ++i)
-		if(name.size()>i->size() && !name.compare(name.size()-i->size(), string::npos, *i))
+	for(const string &s: suffixes)
+		if(name.size()>s.size() && !name.compare(name.size()-s.size(), string::npos, s))
 			return true;
 	return false;
 }