blob: d85b2b1868eeb1d76dbae8cba6f8bfb3251fc5c1 [file] [log] [blame]
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* $Id: XMLEntityDecl.hpp 568078 2007-08-21 11:43:25Z amassari $
*/
#if !defined(XMLENTITYDECL_HPP)
#define XMLENTITYDECL_HPP
#include <xercesc/util/XMemory.hpp>
#include <xercesc/util/PlatformUtils.hpp>
#include <xercesc/util/XMLString.hpp>
#include <xercesc/internal/XSerializable.hpp>
XERCES_CPP_NAMESPACE_BEGIN
/**
* This class defines that core information that defines an XML entity, no
* matter what validator is used. Each validator will create a derivative
* of this class which adds any extra information it requires.
*
* This class supports keyed collection semantics via the getKey() method
* which extracts the key field, the entity name in this case. The name will
* have whatever form is deemed appropriate for the type of validator in
* use.
*
* When setting the fields of this class, you must make sure that you do
* not set conflicting values. For instance, an internal entity cannot have
* a notation name. And an external entity cannot have a value string.
* These rules are defined by the XML specification. In most cases, these
* objects are created by validator objects as they parse a DTD or Schema
* or whatever, at which time they confirm the correctness of the data before
* creating the entity decl object.
*/
class XMLPARSER_EXPORT XMLEntityDecl : public XSerializable, public XMemory
{
public:
// -----------------------------------------------------------------------
// Constructors and Destructor
// -----------------------------------------------------------------------
/** @name Constructors */
//@{
/**
* Deafult Constructor
*/
XMLEntityDecl(MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager);
/** Constructor with a const entity name
*
* @param entName The new name to give to this entity.
* @param manager Pointer to the memory manager to be used to
* allocate objects.
*/
XMLEntityDecl
(
const XMLCh* const entName
, MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager
);
/**
* Constructor with a const entity name and value
*
* @param entName The new name to give to this entity.
* @param value The new value to give to this entity name.
* @param manager Pointer to the memory manager to be used to
* allocate objects.
*/
XMLEntityDecl
(
const XMLCh* const entName
, const XMLCh* const value
, MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager
);
/**
* Constructor with a const entity name and single XMLCh value
*
* @param entName The new name to give to this entity.
* @param value The new value to give to this entity name.
* @param manager Pointer to the memory manager to be used to
* allocate objects.
*/
XMLEntityDecl
(
const XMLCh* const entName
, const XMLCh value
, MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager
);
//@}
/** @name Destructor */
//@{
/**
* Default destructor
*/
virtual ~XMLEntityDecl();
//@}
// -----------------------------------------------------------------------
// Virtual entity decl interface
// -----------------------------------------------------------------------
/** @name The pure virtual methods in this interface. */
//@{
/** Get the 'declared in internal subset' flag
*
* Gets the state of the flag which indicates whether the entity was
* declared in the internal or external subset. Some structural
* description languages might not have an internal subset concept, in
* which case this will always return false.
*/
virtual bool getDeclaredInIntSubset() const = 0;
/** Get the 'is parameter entity' flag
*
* Gets the state of the flag which indicates whether this entity is
* a parameter entity. If not, then its a general entity.
*/
virtual bool getIsParameter() const = 0;
/** Get the 'is special char entity' flag
*
* Gets the state of the flag that indicates whether this entity is
* one of the special, intrinsically supported character entities.
*/
virtual bool getIsSpecialChar() const = 0;
//@}
// -----------------------------------------------------------------------
// Getter methods
// -----------------------------------------------------------------------
/** @name Getter methods */
//@{
/**
* Gets the pool id of this entity. Validators maintain all decls in
* pools, from which they can be quickly extracted via id.
*/
unsigned int getId() const;
/**
* Returns a const pointer to the name of this entity decl. This name
* will be in whatever format is appropriate for the type of validator
* in use.
*/
const XMLCh* getName() const;
/**
* Gets the notation name, if any, declared for this entity. If this
* entity is not a notation type entity, it will be a null pointer.
*/
const XMLCh* getNotationName() const;
/**
* Gets the public id declared for this entity. Public ids are optional
* so it can be a null pointer.
*/
const XMLCh* getPublicId() const;
/**
* Gets the system id declared for this entity. The system id is required
* so this method should never return a null pointers.
*/
const XMLCh* getSystemId() const;
/**
* Gets the base URI for this entity.
*/
const XMLCh* getBaseURI() const;
/**
* This method returns the value of an internal entity. If this is not
* an internal entity (i.e. its external), then this will be a null
* pointer.
*/
const XMLCh* getValue() const;
/**
* This method returns the number of characters in the value returned
* by getValue(). If this entity is external, this will be zero since
* an external entity has no internal value.
*/
unsigned int getValueLen() const;
/**
* Indicates that this entity is an external entity. If not, then it is
* assumed to be an internal entity, suprise.
*/
bool isExternal() const;
/**
* Indicates whether this entity is unparsed. This is meaningless for
* internal entities. Some external entities are unparsed in that they
* refer to something other than XML source.
*/
bool isUnparsed() const;
/** Get the plugged-in memory manager
*
* This method returns the plugged-in memory manager user for dynamic
* memory allocation/deallocation.
*
* @return the plugged-in memory manager
*/
MemoryManager* getMemoryManager() const;
//@}
// -----------------------------------------------------------------------
// Setter methods
// -----------------------------------------------------------------------
/** @name Setter methods */
//@{
/**
* This method will set the entity name. The format of this name is
* defined by the particular validator in use, since it will be the
* one who creates entity definitions as it parses the DTD, Schema,
* ect...
*
* @param entName The new name to give to this entity.
*/
void setName
(
const XMLCh* const entName
);
/**
* This method will set the notation name for this entity. By setting
* this, you are indicating that this is an unparsed external entity.
*
* @param newName The new notation name to give to this entity.
*/
void setNotationName(const XMLCh* const newName);
/**
* This method will set a new public id on this entity. The public id
* has no particular form and is purely for client consumption.
*
* @param newId The new public id to give to this entity.
*/
void setPublicId(const XMLCh* const newId);
/**
* This method will set a new sysetm id on this entity. This will
* then control where the source for this entity lives. If it is
* an internal entity, then the system id is only for bookkeeping
* purposes, and to allow any external entities referenced from
* within the entity to be correctly resolved.
*
* @param newId The new system id to give to the entity.
*/
void setSystemId(const XMLCh* const newId);
/**
* This method will set a new baseURI on this entity. This will
* then control the URI used to resolve the relative system Id.
*
* @param newId The new base URI to give to the entity.
*/
void setBaseURI(const XMLCh* const newId);
/**
* This method will set a new value for this entity. This is only
* valid if the entity is to be an internal entity. By setting this
* field, you are indicating that the entity is internal.
*
* @param newValue The new value to give to this entity.
*/
void setValue(const XMLCh* const newValue);
//@}
/* For internal use only */
void setId(const unsigned int newId);
// -----------------------------------------------------------------------
// Support named pool syntax
// -----------------------------------------------------------------------
/** @name Setter methods */
//@{
/**
* This method allows objects of this class to be used within a standard
* keyed collection used commonly within the parser system. The collection
* calls this method to get the key (usually to hash it) by which the
* object is to be stored.
*/
const XMLCh* getKey() const;
//@}
/***
* Support for Serialization/De-serialization
***/
DECL_XSERIALIZABLE(XMLEntityDecl)
private :
// -----------------------------------------------------------------------
// Unimplemented constructors and operators
// -----------------------------------------------------------------------
XMLEntityDecl(const XMLEntityDecl&);
XMLEntityDecl& operator=(XMLEntityDecl&);
// -----------------------------------------------------------------------
// XMLEntityDecl: Private helper methods
// -----------------------------------------------------------------------
void cleanUp();
// -----------------------------------------------------------------------
// Private data members
//
// fId
// This is the unique id given to this entity decl.
//
// fName
// The name of the enitity. Entity names are never namespace based.
//
// fNotationName
// The optional notation of the entity. If there was none, then its
// empty.
//
// fPublicId
// The public id of the entity, which can be empty.
//
// fSystemId
// The system id of the entity.
//
// fValue
// fValueLen
// The entity's value and length, which is only valid if its an
// internal style entity.
//
// fBaseURI
// The base URI of the entity. According to XML InfoSet, such value
// is the URI where it is declared (NOT referenced).
// -----------------------------------------------------------------------
unsigned int fId;
unsigned int fValueLen;
XMLCh* fValue;
XMLCh* fName;
XMLCh* fNotationName;
XMLCh* fPublicId;
XMLCh* fSystemId;
XMLCh* fBaseURI;
MemoryManager* fMemoryManager;
};
// ---------------------------------------------------------------------------
// XMLEntityDecl: Getter methods
// ---------------------------------------------------------------------------
inline unsigned int XMLEntityDecl::getId() const
{
return fId;
}
inline const XMLCh* XMLEntityDecl::getName() const
{
return fName;
}
inline const XMLCh* XMLEntityDecl::getNotationName() const
{
return fNotationName;
}
inline const XMLCh* XMLEntityDecl::getPublicId() const
{
return fPublicId;
}
inline const XMLCh* XMLEntityDecl::getSystemId() const
{
return fSystemId;
}
inline const XMLCh* XMLEntityDecl::getBaseURI() const
{
return fBaseURI;
}
inline const XMLCh* XMLEntityDecl::getValue() const
{
return fValue;
}
inline unsigned int XMLEntityDecl::getValueLen() const
{
return fValueLen;
}
inline bool XMLEntityDecl::isExternal() const
{
// If it has a system or public id, its external
return ((fPublicId != 0) || (fSystemId != 0));
}
inline bool XMLEntityDecl::isUnparsed() const
{
// If it has a notation, its unparsed
return (fNotationName != 0);
}
inline MemoryManager* XMLEntityDecl::getMemoryManager() const
{
return fMemoryManager;
}
// ---------------------------------------------------------------------------
// XMLEntityDecl: Setter methods
// ---------------------------------------------------------------------------
inline void XMLEntityDecl::setId(const unsigned int newId)
{
fId = newId;
}
inline void XMLEntityDecl::setNotationName(const XMLCh* const newName)
{
if (fNotationName)
fMemoryManager->deallocate(fNotationName);
fNotationName = XMLString::replicate(newName, fMemoryManager);
}
inline void XMLEntityDecl::setPublicId(const XMLCh* const newId)
{
if (fPublicId)
fMemoryManager->deallocate(fPublicId);
fPublicId = XMLString::replicate(newId, fMemoryManager);
}
inline void XMLEntityDecl::setSystemId(const XMLCh* const newId)
{
if (fSystemId)
fMemoryManager->deallocate(fSystemId);
fSystemId = XMLString::replicate(newId, fMemoryManager);
}
inline void XMLEntityDecl::setBaseURI(const XMLCh* const newId)
{
if (fBaseURI)
fMemoryManager->deallocate(fBaseURI);
fBaseURI = XMLString::replicate(newId, fMemoryManager);
}
inline void XMLEntityDecl::setValue(const XMLCh* const newValue)
{
if (fValue)
fMemoryManager->deallocate(fValue);
fValue = XMLString::replicate(newValue, fMemoryManager);
fValueLen = XMLString::stringLen(newValue);
}
// ---------------------------------------------------------------------------
// XMLEntityDecl: Support named pool syntax
// ---------------------------------------------------------------------------
inline const XMLCh* XMLEntityDecl::getKey() const
{
return fName;
}
XERCES_CPP_NAMESPACE_END
#endif