/usr/include/ACEXML/common/NamespaceSupport.h is in libacexml-dev 6.0.3+dfsg-0.2.
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//=============================================================================
/**
* @file NamespaceSupport.h
*
* $Id: NamespaceSupport.h 80826 2008-03-04 14:51:23Z wotte $
* $Id: NamespaceSupport.h 80826 2008-03-04 14:51:23Z wotte $
*
* @author Nanbor Wang <nanbor@cs.wustl.edu>
*/
//=============================================================================
#ifndef ACEXML_NAMESPACESUPPORT_H
#define ACEXML_NAMESPACESUPPORT_H
#include /**/ "ace/pre.h"
#include "ACEXML/common/ACEXML_Export.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
#pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "ACEXML/common/XML_Types.h"
#include "ace/Functor.h"
#include "ace/Hash_Map_Manager.h"
#include "ace/Containers_T.h"
#include "ace/Null_Mutex.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_Namespace_Context_Stack NamespaceSupport.h "ACEXML/common/NamespaceSupport.h"
*
* @brief ACEXML_Namespace_Context_Stack implements a simple stack
* that ACEXML_NamespaceSupport uses to keep track of namespace scopes.
*
* @sa ACEXML_NamespaceSupport
*/
class ACEXML_Export ACEXML_Namespace_Context_Stack
{
public:
/// Default constructor.
ACEXML_Namespace_Context_Stack (void);
/// Destructor.
~ACEXML_Namespace_Context_Stack (void);
/// Push the old namespace before entering into a new namespace scope.
int push (ACEXML_NS_CONTEXT * old);
/// Pop the old namespace when exiting a namespace scope.
ACEXML_NS_CONTEXT *pop (void);
private:
/// Internal stack structure to hold namespace context.
ACE_Unbounded_Stack<ACEXML_NS_CONTEXT*> stack_;
};
/**
* @class ACEXML_NamespaceSupport NamespaceSupport.h "ACEXML/common/NamespaceSupport.h"
*
* @brief ACEXML_NamespaceSupport provides namespace management
* operation for an XML parser.
*
* This class encapsulates the logic of Namespace processing: it
* tracks the declarations currently in force for each context and
* automatically processes qualified XML 1.0 names into their
* Namespace parts; it can also be used in reverse for generating XML
* 1.0 from Namespaces.
*
* Namespace support objects are reusable, but the reset method must
* be invoked between each session.
*
* Here is a simple session (in Java :-p):
* @code
* String parts[] = new String[3];
* NamespaceSupport support = new NamespaceSupport();
*
* support.pushContext();
* support.declarePrefix("", "http://www.w3.org/1999/xhtml");
* support.declarePrefix("dc", "http://www.purl.org/dc#");
*
* String parts[] = support.processName("p", parts, false);
* System.out.println("Namespace URI: " + parts[0]);
* System.out.println("Local name: " + parts[1]);
* System.out.println("Raw name: " + parts[2]);
*
* String parts[] = support.processName("dc:title", parts, false);
* System.out.println("Namespace URI: " + parts[0]);
* System.out.println("Local name: " + parts[1]);
* System.out.println("Raw name: " + parts[2]);
*
* support.popContext();
* @endcode
*
* Note that this class is optimized for the use case where most
* elements do not contain Namespace declarations: if the same
* prefix/URI mapping is repeated for each context (for example), this
* class will be somewhat less efficient.
*
* @sa ACEXML_Exception
*/
class ACEXML_Export ACEXML_NamespaceSupport
{
public:
/**
* Default constructor.
*/
ACEXML_NamespaceSupport (void);
/**
* Default destructor.
*/
~ACEXML_NamespaceSupport (void);
/**
* Initialize the namespace support object
*/
int init(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.
*
*/
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_;
};
#include /**/ "ace/post.h"
#endif /* ACEXML_NAMESPACESUPPORT_H */
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