Module entities from libxml2

# ## Module entities from libxml2

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this module provides some of the entity API needed for the parser and applications. ## Table of Contents
    Structure xmlEntitiesTable
    struct _xmlHashTable
    The content of this structure is not made public by the API.
    Typedef xmlEntitiesTable * xmlEntitiesTablePtr
    Enum xmlEntityType
    xmlEntityPtr	xmlAddDocEntity		(xmlDocPtr doc,
    					 const xmlChar * name,
    					 int type,
    					 const xmlChar * ExternalID,
    					 const xmlChar * SystemID,
    					 const xmlChar * content)
    xmlEntityPtr	xmlAddDtdEntity		(xmlDocPtr doc,
    					 const xmlChar * name,
    					 int type,
    					 const xmlChar * ExternalID,
    					 const xmlChar * SystemID,
    					 const xmlChar * content)
    void	xmlCleanupPredefinedEntities	(void)
    xmlEntitiesTablePtr	xmlCopyEntitiesTable	(xmlEntitiesTablePtr table)
    xmlEntitiesTablePtr	xmlCreateEntitiesTable	(void)
    void	xmlDumpEntitiesTable		(xmlBufferPtr buf,
    					 xmlEntitiesTablePtr table)
    void	xmlDumpEntityDecl		(xmlBufferPtr buf,
    					 xmlEntityPtr ent)
    const xmlChar *	xmlEncodeEntities	(xmlDocPtr doc,
    					 const xmlChar * input)
    xmlChar *	xmlEncodeEntitiesReentrant	(xmlDocPtr doc,
    						 const xmlChar * input)
    xmlChar *	xmlEncodeSpecialChars	(xmlDocPtr doc,
    					 const xmlChar * input)
    void	xmlFreeEntitiesTable		(xmlEntitiesTablePtr table)
    xmlEntityPtr	xmlGetDocEntity		(xmlDocPtr doc,
    					 const xmlChar * name)
    xmlEntityPtr	xmlGetDtdEntity		(xmlDocPtr doc,
    					 const xmlChar * name)
    xmlEntityPtr	xmlGetParameterEntity	(xmlDocPtr doc,
    					 const xmlChar * name)
    xmlEntityPtr	xmlGetPredefinedEntity	(const xmlChar * name)
    void	xmlInitializePredefinedEntities	(void)
## Description ### Structure xmlEntitiesTable
    Structure xmlEntitiesTable
    struct _xmlHashTable {
    The content of this structure is not made public by the API.
    }
### Enum xmlEntityType
    Enum xmlEntityType {
        XML_INTERNAL_GENERAL_ENTITY = 1
        XML_EXTERNAL_GENERAL_PARSED_ENTITY = 2
        XML_EXTERNAL_GENERAL_UNPARSED_ENTITY = 3
        XML_INTERNAL_PARAMETER_ENTITY = 4
        XML_EXTERNAL_PARAMETER_ENTITY = 5
        XML_INTERNAL_PREDEFINED_ENTITY = 6
    }
### Function: xmlAddDocEntity
    xmlEntityPtr	xmlAddDocEntity		(xmlDocPtr doc,
    					 const xmlChar * name,
    					 int type,
    					 const xmlChar * ExternalID,
    					 const xmlChar * SystemID,
    					 const xmlChar * content)
Register a new entity for this document.
`doc`: | the document
`name`: | the entity name
`type`: | the entity type XML_xxx_yyy_ENTITY
`ExternalID`: | the entity external ID if available
`SystemID`: | the entity system ID if available
`content`: | the entity content
`Returns`: | a pointer to the entity or NULL in case of error
### Function: xmlAddDtdEntity
    xmlEntityPtr	xmlAddDtdEntity		(xmlDocPtr doc,
    					 const xmlChar * name,
    					 int type,
    					 const xmlChar * ExternalID,
    					 const xmlChar * SystemID,
    					 const xmlChar * content)
Register a new entity for this document DTD external subset.
`doc`: | the document
`name`: | the entity name
`type`: | the entity type XML_xxx_yyy_ENTITY
`ExternalID`: | the entity external ID if available
`SystemID`: | the entity system ID if available
`content`: | the entity content
`Returns`: | a pointer to the entity or NULL in case of error
### Function: xmlCleanupPredefinedEntities
    void	xmlCleanupPredefinedEntities	(void)
Cleanup up the predefined entities table. Deprecated call ### Function: xmlCopyEntitiesTable
    xmlEntitiesTablePtr	xmlCopyEntitiesTable	(xmlEntitiesTablePtr table)
Build a copy of an entity table.
`table`: | An entity table
`Returns`: | the new xmlEntitiesTablePtr or NULL in case of error.
### Function: xmlCreateEntitiesTable
    xmlEntitiesTablePtr	xmlCreateEntitiesTable	(void)
create and initialize an empty entities hash table. This really doesn't make sense and should be deprecated
`Returns`: | the xmlEntitiesTablePtr just created or NULL in case of error.
### Function: xmlDumpEntitiesTable
    void	xmlDumpEntitiesTable		(xmlBufferPtr buf,
    					 xmlEntitiesTablePtr table)
This will dump the content of the entity table as an XML DTD definition
`buf`: | An XML buffer.
`table`: | An entity table
### Function: xmlDumpEntityDecl
    void	xmlDumpEntityDecl		(xmlBufferPtr buf,
    					 xmlEntityPtr ent)
This will dump the content of the entity table as an XML DTD definition
`buf`: | An XML buffer.
`ent`: | An entity table
### Function: xmlEncodeEntities
    const xmlChar *	xmlEncodeEntities	(xmlDocPtr doc,
    					 const xmlChar * input)
TODO: remove xmlEncodeEntities, once we are not afraid of breaking binary compatibility People must migrate their code to xmlEncodeEntitiesReentrant ! This routine will issue a warning when encountered.
`doc`: | the document containing the string
`input`: | A string to convert to XML.
`Returns`: | NULL
### Function: xmlEncodeEntitiesReentrant
    xmlChar *	xmlEncodeEntitiesReentrant	(xmlDocPtr doc,
    						 const xmlChar * input)
Do a global encoding of a string, replacing the predefined entities and non ASCII values with their entities and CharRef counterparts. Contrary to xmlEncodeEntities, this routine is reentrant, and result must be deallocated.
`doc`: | the document containing the string
`input`: | A string to convert to XML.
`Returns`: | A newly allocated string with the substitution done.
### Function: xmlEncodeSpecialChars
    xmlChar *	xmlEncodeSpecialChars	(xmlDocPtr doc,
    					 const xmlChar * input)
Do a global encoding of a string, replacing the predefined entities this routine is reentrant, and result must be deallocated.
`doc`: | the document containing the string
`input`: | A string to convert to XML.
`Returns`: | A newly allocated string with the substitution done.
### Function: xmlFreeEntitiesTable
    void	xmlFreeEntitiesTable		(xmlEntitiesTablePtr table)
Deallocate the memory used by an entities hash table.
`table`: | An entity table
### Function: xmlGetDocEntity
    xmlEntityPtr	xmlGetDocEntity		(xmlDocPtr doc,
    					 const xmlChar * name)
Do an entity lookup in the document entity hash table and
`doc`: | the document referencing the entity
`name`: | the entity name
`Returns`: | the corresponding entity, otherwise a lookup is done in the predefined entities too. Returns A pointer to the entity structure or NULL if not found.
### Function: xmlGetDtdEntity
    xmlEntityPtr	xmlGetDtdEntity		(xmlDocPtr doc,
    					 const xmlChar * name)
Do an entity lookup in the DTD entity hash table and
`doc`: | the document referencing the entity
`name`: | the entity name
`Returns`: | the corresponding entity, if found. Note: the first argument is the document node, not the DTD node. Returns A pointer to the entity structure or NULL if not found.
### Function: xmlGetParameterEntity
    xmlEntityPtr	xmlGetParameterEntity	(xmlDocPtr doc,
    					 const xmlChar * name)
Do an entity lookup in the internal and external subsets and
`doc`: | the document referencing the entity
`name`: | the entity name
`Returns`: | the corresponding parameter entity, if found. Returns A pointer to the entity structure or NULL if not found.
### Function: xmlGetPredefinedEntity
    xmlEntityPtr	xmlGetPredefinedEntity	(const xmlChar * name)
Check whether this name is an predefined entity.
`name`: | the entity name
`Returns`: | NULL if not, otherwise the entity
### Function: xmlInitializePredefinedEntities
    void	xmlInitializePredefinedEntities	(void)
Set up the predefined entities. Deprecated call Daniel Veillard