/*
 * Summary: the XMLReader implementation
 * Description: API of the XML streaming API based on C# interfaces.
 *
 * Copy: See Copyright for the status of this software.
 *
 * Author: Daniel Veillard
 */

#ifndef __XML_XMLREADER_H__
#define __XML_XMLREADER_H__

#include <libxml/xmlversion.h>
#include <libxml/tree.h>
#include <libxml/xmlIO.h>
#ifdef LIBXML_SCHEMAS_ENABLED
#include <libxml/relaxng.h>
#include <libxml/xmlschemas.h>
#endif

#ifdef __cplusplus
extern "C" {
#endif

/**
 * xmlParserSeverities:
 *
 * How severe an error callback is when the per-reader error callback API
 * is used.
 */
typedef enum {
    XML_PARSER_SEVERITY_VALIDITY_WARNING = 1,
    XML_PARSER_SEVERITY_VALIDITY_ERROR = 2,
    XML_PARSER_SEVERITY_WARNING = 3,
    XML_PARSER_SEVERITY_ERROR = 4
} xmlParserSeverities;

#ifdef LIBXML_READER_ENABLED

/**
 * xmlTextReaderMode:
 *
 * Internal state values for the reader.
 */
typedef enum {
    XML_TEXTREADER_MODE_INITIAL = 0,
    XML_TEXTREADER_MODE_INTERACTIVE = 1,
    XML_TEXTREADER_MODE_ERROR = 2,
    XML_TEXTREADER_MODE_EOF =3,
    XML_TEXTREADER_MODE_CLOSED = 4,
    XML_TEXTREADER_MODE_READING = 5
} xmlTextReaderMode;

/**
 * xmlParserProperties:
 *
 * Some common options to use with xmlTextReaderSetParserProp, but it
 * is better to use xmlParserOption and the xmlReaderNewxxx and 
 * xmlReaderForxxx APIs now.
 */
typedef enum {
    XML_PARSER_LOADDTD = 1,
    XML_PARSER_DEFAULTATTRS = 2,
    XML_PARSER_VALIDATE = 3,
    XML_PARSER_SUBST_ENTITIES = 4
} xmlParserProperties;

/**
 * xmlReaderTypes:
 *
 * Predefined constants for the different types of nodes.
 */
typedef enum {
    XML_READER_TYPE_NONE = 0,
    XML_READER_TYPE_ELEMENT = 1,
    XML_READER_TYPE_ATTRIBUTE = 2,
    XML_READER_TYPE_TEXT = 3,
    XML_READER_TYPE_CDATA = 4,
    XML_READER_TYPE_ENTITY_REFERENCE = 5,
    XML_READER_TYPE_ENTITY = 6,
    XML_READER_TYPE_PROCESSING_INSTRUCTION = 7,
    XML_READER_TYPE_COMMENT = 8,
    XML_READER_TYPE_DOCUMENT = 9,
    XML_READER_TYPE_DOCUMENT_TYPE = 10,
    XML_READER_TYPE_DOCUMENT_FRAGMENT = 11,
    XML_READER_TYPE_NOTATION = 12,
    XML_READER_TYPE_WHITESPACE = 13,
    XML_READER_TYPE_SIGNIFICANT_WHITESPACE = 14,
    XML_READER_TYPE_END_ELEMENT = 15,
    XML_READER_TYPE_END_ENTITY = 16,
    XML_READER_TYPE_XML_DECLARATION = 17
} xmlReaderTypes;

/**
 * xmlTextReader:
 *
 * Structure for an xmlReader context.
 */
typedef struct _xmlTextReader xmlTextReader;

/**
 * xmlTextReaderPtr:
 *
 * Pointer to an xmlReader context.
 */
typedef xmlTextReader *xmlTextReaderPtr;

/*
 * Constructors & Destructor
 */
XMLPUBFUN xmlTextReaderPtr XMLCALL
			xmlNewTextReader	(xmlParserInputBufferPtr input,
	                                         const char *URI);
XMLPUBFUN xmlTextReaderPtr XMLCALL	
			xmlNewTextReaderFilename(const char *URI);

XMLPUBFUN void XMLCALL			
			xmlFreeTextReader	(xmlTextReaderPtr reader);

XMLPUBFUN int XMLCALL			
            xmlTextReaderSetup(xmlTextReaderPtr reader,
                   xmlParserInputBufferPtr input, const char *URL,
                   const char *encoding, int options);

/*
 * Iterators
 */
XMLPUBFUN int XMLCALL		
			xmlTextReaderRead	(xmlTextReaderPtr reader);

#ifdef LIBXML_WRITER_ENABLED
XMLPUBFUN xmlChar * XMLCALL	
			xmlTextReaderReadInnerXml	(xmlTextReaderPtr reader);
			
XMLPUBFUN xmlChar * XMLCALL	
			xmlTextReaderReadOuterXml	(xmlTextReaderPtr reader);
#endif

XMLPUBFUN xmlChar * XMLCALL	
			xmlTextReaderReadString		(xmlTextReaderPtr reader);
XMLPUBFUN int XMLCALL		
			xmlTextReaderReadAttributeValue	(xmlTextReaderPtr reader);

/*
 * Attributes of the node
 */
XMLPUBFUN int XMLCALL		
			xmlTextReaderAttributeCount(xmlTextReaderPtr reader);
XMLPUBFUN int XMLCALL		
			xmlTextReaderDepth	(xmlTextReaderPtr reader);
XMLPUBFUN int XMLCALL		
			xmlTextReaderHasAttributes(xmlTextReaderPtr reader);
XMLPUBFUN int XMLCALL		
			xmlTextReaderHasValue(xmlTextReaderPtr reader);
XMLPUBFUN int XMLCALL		
			xmlTextReaderIsDefault	(xmlTextReaderPtr reader);
XMLPUBFUN int XMLCALL		
			xmlTextReaderIsEmptyElement(xmlTextReaderPtr reader);
XMLPUBFUN int XMLCALL		
			xmlTextReaderNodeType	(xmlTextReaderPtr reader);
XMLPUBFUN int XMLCALL		
			xmlTextReaderQuoteChar	(xmlTextReaderPtr reader);
XMLPUBFUN int XMLCALL		
			xmlTextReaderReadState	(xmlTextReaderPtr reader);
XMLPUBFUN int XMLCALL
                        xmlTextReaderIsNamespaceDecl(xmlTextReaderPtr reader);

XMLPUBFUN const xmlChar * XMLCALL	
		    xmlTextReaderConstBaseUri	(xmlTextReaderPtr reader);
XMLPUBFUN const xmlChar * XMLCALL	
		    xmlTextReaderConstLocalName	(xmlTextReaderPtr reader);
XMLPUBFUN const xmlChar * XMLCALL	
		    xmlTextReaderConstName	(xmlTextReaderPtr reader);
XMLPUBFUN const xmlChar * XMLCALL	
		    xmlTextReaderConstNamespaceUri(xmlTextReaderPtr reader);
XMLPUBFUN const xmlChar * XMLCALL	
		    xmlTextReaderConstPrefix	(xmlTextReaderPtr reader);
XMLPUBFUN const xmlChar * XMLCALL	
		    xmlTextReaderConstXmlLang	(xmlTextReaderPtr reader);
XMLPUBFUN const xmlChar * XMLCALL	
		    xmlTextReaderConstString	(xmlTextReaderPtr reader,
		    				 const xmlChar *str);
XMLPUBFUN const xmlChar * XMLCALL	
		    xmlTextReaderConstValue	(xmlTextReaderPtr reader);

/*
 * use the Const version of the routine for
 * better performance and simpler code
 */
XMLPUBFUN xmlChar * XMLCALL	
			xmlTextReaderBaseUri	(xmlTextReaderPtr reader);
XMLPUBFUN xmlChar * XMLCALL	
			xmlTextReaderLocalName	(xmlTextReaderPtr reader);
XMLPUBFUN xmlChar * XMLCALL	
			xmlTextReaderName	(xmlTextReaderPtr reader);
XMLPUBFUN xmlChar * XMLCALL	
			xmlTextReaderNamespaceUri(xmlTextReaderPtr reader);
XMLPUBFUN xmlChar * XMLCALL	
			xmlTextReaderPrefix	(xmlTextReaderPtr reader);
XMLPUBFUN xmlChar * XMLCALL	
			xmlTextReaderXmlLang	(xmlTextReaderPtr reader);
XMLPUBFUN xmlChar * XMLCALL	
			xmlTextReaderValue	(xmlTextReaderPtr reader);

/*
 * Methods of the XmlTextReader
 */
XMLPUBFUN int XMLCALL		
		    xmlTextReaderClose		(xmlTextReaderPtr reader);
XMLPUBFUN xmlChar * XMLCALL	
		    xmlTextReaderGetAttributeNo	(xmlTextReaderPtr reader,
						 int no);
XMLPUBFUN xmlChar * XMLCALL	
		    xmlTextReaderGetAttribute	(xmlTextReaderPtr reader,
						 const xmlChar *name);
XMLPUBFUN xmlChar * XMLCALL	
		    xmlTextReaderGetAttributeNs	(xmlTextReaderPtr reader,
						 const xmlChar *localName,
						 const xmlChar *namespaceURI);
XMLPUBFUN xmlParserInputBufferPtr XMLCALL 
		    xmlTextReaderGetRemainder	(xmlTextReaderPtr reader);
XMLPUBFUN xmlChar * XMLCALL	
		    xmlTextReaderLookupNamespace(xmlTextReaderPtr reader,
						 const xmlChar *prefix);
XMLPUBFUN int XMLCALL		
		    xmlTextReaderMoveToAttributeNo(xmlTextReaderPtr reader,
						 int no);
XMLPUBFUN int XMLCALL		
		    xmlTextReaderMoveToAttribute(xmlTextReaderPtr reader,
						 const xmlChar *name);
XMLPUBFUN int XMLCALL		
		    xmlTextReaderMoveToAttributeNs(xmlTextReaderPtr reader,
						 const xmlChar *localName,
						 const xmlChar *namespaceURI);
XMLPUBFUN int XMLCALL		
		    xmlTextReaderMoveToFirstAttribute(xmlTextReaderPtr reader);
XMLPUBFUN int XMLCALL		
		    xmlTextReaderMoveToNextAttribute(xmlTextReaderPtr reader);
XMLPUBFUN int XMLCALL		
		    xmlTextReaderMoveToElement	(xmlTextReaderPtr reader);
XMLPUBFUN int XMLCALL		
		    xmlTextReaderNormalization	(xmlTextReaderPtr reader);
XMLPUBFUN const xmlChar * XMLCALL
		    xmlTextReaderConstEncoding  (xmlTextReaderPtr reader);

/*
 * Extensions
 */
XMLPUBFUN int XMLCALL		
		    xmlTextReaderSetParserProp	(xmlTextReaderPtr reader,
						 int prop,
						 int value);
XMLPUBFUN int XMLCALL		
		    xmlTextReaderGetParserProp	(xmlTextReaderPtr reader,
						 int prop);
XMLPUBFUN xmlNodePtr XMLCALL	
		    xmlTextReaderCurrentNode	(xmlTextReaderPtr reader);

XMLPUBFUN int XMLCALL
            xmlTextReaderGetParserLineNumber(xmlTextReaderPtr reader);

XMLPUBFUN int XMLCALL
            xmlTextReaderGetParserColumnNumber(xmlTextReaderPtr reader);

XMLPUBFUN xmlNodePtr XMLCALL	
		    xmlTextReaderPreserve	(xmlTextReaderPtr reader);
#ifdef LIBXML_PATTERN_ENABLED
XMLPUBFUN int XMLCALL	
		    xmlTextReaderPreservePattern(xmlTextReaderPtr reader,
		    				 const xmlChar *pattern,
						 const xmlChar **namespaces);
#endif /* LIBXML_PATTERN_ENABLED */
XMLPUBFUN xmlDocPtr XMLCALL	
		    xmlTextReaderCurrentDoc	(xmlTextReaderPtr reader);
XMLPUBFUN xmlNodePtr XMLCALL	
		    xmlTextReaderExpand		(xmlTextReaderPtr reader);
XMLPUBFUN int XMLCALL		
		    xmlTextReaderNext		(xmlTextReaderPtr reader);
XMLPUBFUN int XMLCALL
		    xmlTextReaderNextSibling	(xmlTextReaderPtr reader);
XMLPUBFUN int XMLCALL		
		    xmlTextReaderIsValid	(xmlTextReaderPtr reader);
#ifdef LIBXML_SCHEMAS_ENABLED
XMLPUBFUN int XMLCALL		
		    xmlTextReaderRelaxNGValidate(xmlTextReaderPtr reader,
						 const char *rng);
XMLPUBFUN int XMLCALL		
		    xmlTextReaderRelaxNGSetSchema(xmlTextReaderPtr reader,
						 xmlRelaxNGPtr schema);
XMLPUBFUN int XMLCALL
		    xmlTextReaderSchemaValidate	(xmlTextReaderPtr reader,
		    				 const char *xsd);
XMLPUBFUN int XMLCALL
		    xmlTextReaderSchemaValidateCtxt(xmlTextReaderPtr reader,
						 xmlSchemaValidCtxtPtr ctxt,
						 int options);
XMLPUBFUN int XMLCALL		
		    xmlTextReaderSetSchema	(xmlTextReaderPtr reader,
		    				 xmlSchemaPtr schema);
#endif
XMLPUBFUN const xmlChar * XMLCALL
		    xmlTextReaderConstXmlVersion(xmlTextReaderPtr reader);
XMLPUBFUN int XMLCALL
		    xmlTextReaderStandalone     (xmlTextReaderPtr reader);


/*
 * Index lookup
 */
XMLPUBFUN long XMLCALL
		xmlTextReaderByteConsumed	(xmlTextReaderPtr reader);

/*
 * New more complete APIs for simpler creation and reuse of readers
 */
XMLPUBFUN xmlTextReaderPtr XMLCALL
		xmlReaderWalker		(xmlDocPtr doc);
XMLPUBFUN xmlTextReaderPtr XMLCALL
		xmlReaderForDoc		(const xmlChar * cur,
					 const char *URL,
					 const char *encoding,
					 int options);
XMLPUBFUN xmlTextReaderPtr XMLCALL
		xmlReaderForFile	(const char *filename,
					 const char *encoding,
					 int options);
XMLPUBFUN xmlTextReaderPtr XMLCALL
		xmlReaderForMemory	(const char *buffer,
					 int size,
					 const char *URL,
					 const char *encoding,
					 int options);
XMLPUBFUN xmlTextReaderPtr XMLCALL
		xmlReaderForFd		(int fd,
					 const char *URL,
					 const char *encoding,
					 int options);
XMLPUBFUN xmlTextReaderPtr XMLCALL
		xmlReaderForIO		(xmlInputReadCallback ioread,
					 xmlInputCloseCallback ioclose,
					 void *ioctx,
					 const char *URL,
					 const char *encoding,
					 int options);

XMLPUBFUN int XMLCALL
		xmlReaderNewWalker	(xmlTextReaderPtr reader,
					 xmlDocPtr doc);
XMLPUBFUN int XMLCALL
		xmlReaderNewDoc		(xmlTextReaderPtr reader,
					 const xmlChar * cur,
					 const char *URL,
					 const char *encoding,
					 int options);
XMLPUBFUN int XMLCALL
		xmlReaderNewFile	(xmlTextReaderPtr reader,
					 const char *filename,
					 const char *encoding,
					 int options);
XMLPUBFUN int XMLCALL
		xmlReaderNewMemory	(xmlTextReaderPtr reader,
					 const char *buffer,
					 int size,
					 const char *URL,
					 const char *encoding,
					 int options);
XMLPUBFUN int XMLCALL
		xmlReaderNewFd		(xmlTextReaderPtr reader,
					 int fd,
					 const char *URL,
					 const char *encoding,
					 int options);
XMLPUBFUN int XMLCALL
		xmlReaderNewIO		(xmlTextReaderPtr reader,
					 xmlInputReadCallback ioread,
					 xmlInputCloseCallback ioclose,
					 void *ioctx,
					 const char *URL,
					 const char *encoding,
					 int options);
/*
 * Error handling extensions
 */
typedef void *  xmlTextReaderLocatorPtr;

/**
 * xmlTextReaderErrorFunc:
 * @arg: the user argument
 * @msg: the message
 * @severity: the severity of the error
 * @locator: a locator indicating where the error occured
 *
 * Signature of an error callback from a reader parser
 */
typedef void   (XMLCALL *xmlTextReaderErrorFunc)        (void *arg, 
						 const char *msg,
						 xmlParserSeverities severity,
						 xmlTextReaderLocatorPtr locator);
XMLPUBFUN int XMLCALL             
		    xmlTextReaderLocatorLineNumber(xmlTextReaderLocatorPtr locator);
/*int             xmlTextReaderLocatorLinePosition(xmlTextReaderLocatorPtr locator);*/
XMLPUBFUN xmlChar * XMLCALL       
		    xmlTextReaderLocatorBaseURI (xmlTextReaderLocatorPtr locator);
XMLPUBFUN void XMLCALL            
		    xmlTextReaderSetErrorHandler(xmlTextReaderPtr reader, 
						 xmlTextReaderErrorFunc f, 
						 void *arg);
XMLPUBFUN void XMLCALL
		    xmlTextReaderSetStructuredErrorHandler(xmlTextReaderPtr reader,
							   xmlStructuredErrorFunc f,
							   void *arg);
XMLPUBFUN void XMLCALL            
		    xmlTextReaderGetErrorHandler(xmlTextReaderPtr reader, 
						 xmlTextReaderErrorFunc *f, 
						 void **arg);

#endif /* LIBXML_READER_ENABLED */

#ifdef __cplusplus
}
#endif

#endif /* __XML_XMLREADER_H__ */

