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 * Summary: interface for the I/O interfaces used by the parser
 * Description: interface for the I/O interfaces used by the parser
 *
 * Copy: See Copyright for the status of this software.
 *
 * Author: Daniel Veillard
 */

#ifndef __XML_IO_H__
#define __XML_IO_H__

#include <stdio.h>
#include <libxml/xmlversion.h>

#ifdef __cplusplus
extern "C" {
#endif

/*
 * Those are the functions and datatypes for the parser input
 * I/O structures.
 */

/**
 * xmlInputMatchCallback:
 * @filename: the filename or URI
 *
 * Callback used in the I/O Input API to detect if the current handler
 * can provide input functionality for this resource.
 *
 * Returns 1 if yes and 0 if another Input module should be used
 */
typedef int (XMLCALL *xmlInputMatchCallback) (char const *filename);
/**
 * xmlInputOpenCallback:
 * @filename: the filename or URI
 *
 * Callback used in the I/O Input API to open the resource
 *
 * Returns an Input context or NULL in case or error
 */
typedef void * (XMLCALL *xmlInputOpenCallback) (char const *filename);
/**
 * xmlInputReadCallback:
 * @context:  an Input context
 * @buffer:  the buffer to store data read
 * @len:  the length of the buffer in bytes
 *
 * Callback used in the I/O Input API to read the resource
 *
 * Returns the number of bytes read or -1 in case of error
 */
typedef int (XMLCALL *xmlInputReadCallback) (void * context, char * buffer, int len);
/**
 * xmlInputCloseCallback:
 * @context:  an Input context
 *
 * Callback used in the I/O Input API to close the resource
 *
 * Returns 0 or -1 in case of error
 */
typedef int (XMLCALL *xmlInputCloseCallback) (void * context);

#ifdef LIBXML_OUTPUT_ENABLED
/*
 * Those are the functions and datatypes for the library output
 * I/O structures.
 */

/**
 * xmlOutputMatchCallback:
 * @filename: the filename or URI
 *
 * Callback used in the I/O Output API to detect if the current handler
 * can provide output functionality for this resource.
 *
 * Returns 1 if yes and 0 if another Output module should be used
 */
typedef int (XMLCALL *xmlOutputMatchCallback) (char const *filename);
/**
 * xmlOutputOpenCallback:
 * @filename: the filename or URI
 *
 * Callback used in the I/O Output API to open the resource
 *
 * Returns an Output context or NULL in case or error
 */
typedef void * (XMLCALL *xmlOutputOpenCallback) (char const *filename);
/**
 * xmlOutputWriteCallback:
 * @context:  an Output context
 * @buffer:  the buffer of data to write
 * @len:  the length of the buffer in bytes
 *
 * Callback used in the I/O Output API to write to the resource
 *
 * Returns the number of bytes written or -1 in case of error
 */
typedef int (XMLCALL *xmlOutputWriteCallback) (void * context, const char * buffer,
                                       int len);
/**
 * xmlOutputCloseCallback:
 * @context:  an Output context
 *
 * Callback used in the I/O Output API to close the resource
 *
 * Returns 0 or -1 in case of error
 */
typedef int (XMLCALL *xmlOutputCloseCallback) (void * context);
#endif /* LIBXML_OUTPUT_ENABLED */

#ifdef __cplusplus
}
#endif

#include <libxml/globals.h>
#include <libxml/tree.h>
#include <libxml/parser.h>
#include <libxml/encoding.h>

#ifdef __cplusplus
extern "C" {
#endif
struct _xmlParserInputBuffer {
    void*                  context;
    xmlInputReadCallback   readcallback;
    xmlInputCloseCallback  closecallback;

    xmlCharEncodingHandlerPtr encoder; /* I18N conversions to UTF-8 */

    xmlBufPtr buffer;    /* Local buffer encoded in UTF-8 */
    xmlBufPtr raw;       /* if encoder != NULL buffer for raw input */
    int	compressed;	    /* -1=unknown, 0=not compressed, 1=compressed */
    int error;
    unsigned long rawconsumed;/* amount consumed from raw */
};


#ifdef LIBXML_OUTPUT_ENABLED
struct _xmlOutputBuffer {
    void*                   context;
    xmlOutputWriteCallback  writecallback;
    xmlOutputCloseCallback  closecallback;

    xmlCharEncodingHandlerPtr encoder; /* I18N conversions to UTF-8 */

    xmlBufPtr buffer;    /* Local buffer encoded in UT