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// -*- C++ -*- $Id$
#ifndef ACEXML_NAMESPACESUPPORT_H
#define ACEXML_NAMESPACESUPPORT_H
#include "Common/XML_Types.h"
#include "ace/Functor.h"
#include "ace/Hash_Map_Manager.h"
#include "ace/Containers_T.h"
typedef ACE_Hash_Map_Entry<ACEXML_String,
ACEXML_String> ACEXML_NS_CONTEXT_ENTRY;
typedef ACE_Hash_Map_Manager_Ex<ACEXML_String,
ACEXML_String,
ACE_Hash<ACEXML_String>,
ACE_Equal_To<ACEXML_String>,
ACE_Null_Mutex> ACEXML_NS_CONTEXT;
typedef ACE_Hash_Map_Iterator_Ex<ACEXML_String,
ACEXML_String,
ACE_Hash<ACEXML_String>,
ACE_Equal_To<ACEXML_String>,
ACE_Null_Mutex> ACEXML_NS_CONTEXT_ITER;
typedef ACE_Hash_Map_Reverse_Iterator_Ex<ACEXML_String,
ACEXML_String,
ACE_Hash<ACEXML_String>,
ACE_Equal_To<ACEXML_String>,
ACE_Null_Mutex> ACEXML_NS_CONTEXT_REVERSE_ITER;
typedef ACE_Unbounded_Queue<const ACEXML_Char *> ACEXML_STR_LIST;
class ACEXML_Export ACEXML_Namespace_Context_Stack
{
public:
ACEXML_Namespace_Context_Stack (void);
~ACEXML_Namespace_Context_Stack (void);
int push (ACEXML_NS_CONTEXT * old);
ACEXML_NS_CONTEXT *pop (void);
private:
struct NS_Node_T {
ACEXML_NS_CONTEXT *item_;
struct NS_Node_T *next_;
};
NS_Node_T *head_;
};
class ACEXML_Export ACEXML_NamespaceSupport
{
public:
/**
* Default constructor.
*/
ACEXML_NamespaceSupport (void);
/**
* Default destructor.
*/
~ACEXML_NamespaceSupport (void);
/**
* XMLNS default prefix and URI strings.
*/
static const ACEXML_Char *XMLNS_PREFIX;
static const ACEXML_Char *XMLNS;
/**
* Declare a Namespace prefix. Return -1 if the prefix was illegal
* or an internal error occured. Return 0 if the prefix gets declared
* successfully, 1 if the prefix replaces an existing prefix definition.
*/
int declarePrefix (const ACEXML_Char *prefix,
const ACEXML_Char *uri);
/**
* Return all prefixes declared in current context in
* the user-supplied list @a prefixes. It is user's reponsibility
* to ensure the list was empty originally.
*/
int getDeclaredPrefixes (ACEXML_STR_LIST &prefixes) const;
/**
* Return one of the prefixes mapped to a Namespace URI.
*/
const ACEXML_Char *getPrefix (const ACEXML_Char *uri) const;
/**
* Return all prefixes currently declared in the user-supplied list.
* @@ Known bug: This function should only return user-defined prefixes.
*/
int getPrefixes (ACEXML_STR_LIST &prefixes) const;
/**
* Return all prefixes currently declared for a URI in the
* user-supplied list.
*/
int getPrefixes (const ACEXML_Char *uri,
ACEXML_STR_LIST &prefixes) const;
/**
* Look up a prefix and get the currently-mapped Namespace URI.
*/
const ACEXML_Char *getURI (const ACEXML_Char *prefix) const;
/**
* Revert to the previous namespace context.
*/
int popContext (void);
/**
* Process a raw XML 1.0 name.
* @a qName is the raw XML name we want to parse,
* @a uri contains the URI string of the raw name. It points to a null
* string if the namespace is not valid or there's no namespace defined.
* @a name contains the original name without the prefix.
* @a is_attribute specifies whether the name is an attribute or not.
* Attributes have different scoping rules from elements.
*/
int processName (const ACEXML_Char *qName,
const ACEXML_Char *&uri,
const ACEXML_Char *&name,
int is_attribute) const;
/**
* Start a new Namespace context. Prefixes defined in previous
* context are copied over to the new context.
*/
int pushContext (void);
/**
* Reset this Namespace support object for reuse.
* @todo Not implemented.
*/
int reset (void);
private:
/**
* Namespace Context stack. When we entering a new namespace
* context, the old context is duplicated and pushed into
* this stack.
*/
ACEXML_Namespace_Context_Stack ns_stack_;
/**
* The effective namespace context.
*/
ACEXML_NS_CONTEXT *effective_context_;
};
#if defined (__ACEXML_INLINE__)
# include "Common/NamespaceSupport.i"
#endif /* __ACEXML_INLINE__ */
#endif /* ACEXML_NAMESPACESUPPORT_H */
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