Sort xml files, so order is constant

Makes xml format work better with version control systems.

core/io/resource_format_xml.cpp

@@ -2243,12 +2243,12 @@ void ResourceFormatSaverXMLInstance::write_property(const String& p_name,const V
 
 			List<Variant> keys;
 			dict.get_key_list(&keys);
+			keys.sort();
 
 			for(List<Variant>::Element *E=keys.front();E;E=E->next()) {
 
 				//if (!_check_type(dict[E->get()]))
 				//	continue;
-
 				bool ok;
 				write_property("",E->get(),&ok);
 				ERR_CONTINUE(!ok);
@@ -2438,7 +2438,7 @@ void ResourceFormatSaverXMLInstance::_find_resources(const Variant& p_variant,bo
 				return;
 
 			if (!p_main && (!bundle_resources ) && res->get_path().length() && res->get_path().find("::") == -1 ) {
-				external_resources.insert(res);
+				external_resources.push_back(res);
 				return;
 			}
 
@@ -2448,6 +2448,7 @@ void ResourceFormatSaverXMLInstance::_find_resources(const Variant& p_variant,bo
 			List<PropertyInfo> property_list;
 
 			res->get_property_list( &property_list );
+			property_list.sort();
 
 			List<PropertyInfo>::Element *I=property_list.front();
 
@@ -2525,7 +2526,7 @@ Error ResourceFormatSaverXMLInstance::save(const String &p_path,const RES& p_res
 	enter_tag("resource_file","type=\""+p_resource->get_type()+"\" subresource_count=\""+itos(saved_resources.size()+external_resources.size())+"\" version=\""+itos(VERSION_MAJOR)+"."+itos(VERSION_MINOR)+"\" version_name=\""+VERSION_FULL_NAME+"\"");
 	write_string("\n",false);
 
-	for(Set<RES>::Element *E=external_resources.front();E;E=E->next()) {
+	for(List<RES>::Element *E=external_resources.front();E;E=E->next()) {
 
 		write_tabs();
 		String p = E->get()->get_path();
@@ -2562,6 +2563,7 @@ Error ResourceFormatSaverXMLInstance::save(const String &p_path,const RES& p_res
 
 		List<PropertyInfo> property_list;
 		res->get_property_list(&property_list);
+		property_list.sort();
 		for(List<PropertyInfo>::Element *PE = property_list.front();PE;PE=PE->next()) {
 
 

core/io/resource_format_xml.h

@@ -125,7 +125,7 @@ class ResourceFormatSaverXMLInstance  {
 	int depth;
 	Map<RES,int> resource_map;
 	List<RES> saved_resources;
-	Set<RES> external_resources;
+	List<RES> external_resources;
 
 	void enter_tag(const char* p_tag,const String& p_args=String());
 	void exit_tag(const char* p_tag);

core/object.h

@@ -111,6 +111,9 @@ struct PropertyInfo {
 	PropertyInfo( Variant::Type p_type, const String p_name, PropertyHint p_hint=PROPERTY_HINT_NONE, const String& p_hint_string="",uint32_t p_usage=PROPERTY_USAGE_DEFAULT) {
 		type=p_type; name=p_name; hint=p_hint; hint_string=p_hint_string; usage=p_usage;
 	}
+	bool operator<(const PropertyInfo& p_info) const {
+		return name<p_info.name;
+	}
 };
 
 

core/variant.cpp

@@ -456,6 +456,15 @@ bool Variant::operator==(const Variant& p_variant) const {
 
 }
 
+bool Variant::operator<(const Variant& p_variant) const {
+	if (type!=p_variant.type) //if types differ, then order by type first
+		return type<p_variant.type;
+	bool v;
+	Variant r;
+	evaluate(OP_LESS,*this,p_variant,r,v);
+	return r;
+}
+
 bool Variant::is_zero() const {
 
 	switch( type ) {

core/variant.h

@@ -408,7 +408,8 @@ public:
 
 	//argsVariant call()
 
-	bool operator==(const Variant& p_variant) const;	
+	bool operator==(const Variant& p_variant) const;
+	bool operator<(const Variant& p_variant) const;
 	uint32_t hash() const;
 
 	bool booleanize(bool &valid) const;

core/variant_op.cpp

@@ -165,6 +165,12 @@ r_valid=false;\
 return;}
 
 #define DEFAULT_OP_ARRAY_EQ(m_name,m_type)\
+DEFAULT_OP_ARRAY_OP(m_name,m_type,!=,!=,true,false,false)
+
+#define DEFAULT_OP_ARRAY_LT(m_name,m_type)\
+DEFAULT_OP_ARRAY_OP(m_name,m_type,<,!=,false,a_len<array_b.size(),true)
+
+#define DEFAULT_OP_ARRAY_OP(m_name,m_type,m_opa,m_opb,m_ret_def,m_ret_s,m_ret_f)\
 case m_name: {	\
 	if (p_a.type!=p_b.type) {\
 		r_valid=false;\
@@ -174,19 +180,19 @@ case m_name: {	\
 	const DVector<m_type> &array_b=*reinterpret_cast<const DVector<m_type> *>(p_b._data._mem);\
 \
 	int a_len = array_a.size();\
-	if (a_len!=array_b.size()){\
-		_RETURN( false);\
+	if (a_len m_opa array_b.size()){\
+		_RETURN( m_ret_s);\
 	}else {\
 \
 		DVector<m_type>::Read ra = array_a.read();\
 		DVector<m_type>::Read rb = array_b.read();\
 \
 		for(int i=0;i<a_len;i++) {\
-			if (ra[i]!=rb[i])\
-				_RETURN( false);\
+			if (ra[i] m_opb rb[i])\
+				_RETURN( m_ret_f);\
 		}\
 \
-		_RETURN( true);\
+		_RETURN( m_ret_def);\
 	}\
 }
 
@@ -357,14 +363,33 @@ void Variant::evaluate(const Operator& p_op, const Variant& p_a, const Variant&
 				} break;
 				DEFAULT_OP_FAIL(INPUT_EVENT);
 				DEFAULT_OP_FAIL(DICTIONARY);
-				DEFAULT_OP_FAIL(ARRAY);
-				DEFAULT_OP_FAIL(RAW_ARRAY);
-				DEFAULT_OP_FAIL(INT_ARRAY);
-				DEFAULT_OP_FAIL(REAL_ARRAY);
-				DEFAULT_OP_FAIL(STRING_ARRAY);
-				DEFAULT_OP_FAIL(VECTOR2_ARRAY);
-				DEFAULT_OP_FAIL(VECTOR3_ARRAY);
-				DEFAULT_OP_FAIL(COLOR_ARRAY);
+				case ARRAY: {
+
+					if (p_b.type!=ARRAY)
+						_RETURN( false );
+
+					const Array *arr_a=reinterpret_cast<const Array*>(p_a._data._mem);
+					const Array *arr_b=reinterpret_cast<const Array*>(p_b._data._mem);
+
+					int l = arr_a->size();
+					if (arr_b->size()<l)
+						_RETURN( false );
+					for(int i=0;i<l;i++) {
+						if (!((*arr_a)[i]<(*arr_b)[i])) {
+							_RETURN( true );
+						}
+					}
+
+					_RETURN( false );
+
+				} break;
+				DEFAULT_OP_ARRAY_LT(RAW_ARRAY,uint8_t);
+				DEFAULT_OP_ARRAY_LT(INT_ARRAY,int);
+				DEFAULT_OP_ARRAY_LT(REAL_ARRAY,real_t);
+				DEFAULT_OP_ARRAY_LT(STRING_ARRAY,String);
+				DEFAULT_OP_ARRAY_LT(VECTOR2_ARRAY,Vector3);
+				DEFAULT_OP_ARRAY_LT(VECTOR3_ARRAY,Vector3);
+				DEFAULT_OP_ARRAY_LT(COLOR_ARRAY,Color);
 				case VARIANT_MAX: {
 					r_valid=false;
 					return;