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/**
@file rexmpp_xml_parser.h
@brief XML parsing for rexmpp
@author defanor <defanor@uberspace.net>
@date 2023
@copyright MIT license.
*/
#ifndef REXMPP_XML_PARSER_H
#define REXMPP_XML_PARSER_H
#if defined(USE_LIBXML2)
#include <libxml/tree.h>
#elif defined(USE_EXPAT)
#include <expat.h>
#endif
#include "config.h"
typedef void (*rexmpp_xml_parser_element_start) (void *data,
const char *name,
const char *namespace,
rexmpp_xml_attr_t *attributes);
typedef void (*rexmpp_xml_parser_element_end) (void *data);
typedef void (*rexmpp_xml_parser_characters) (void *data,
const char *ch,
size_t len);
struct rexmpp_xml_parser_handlers {
rexmpp_xml_parser_element_start elem_start;
rexmpp_xml_parser_element_end elem_end;
rexmpp_xml_parser_characters text;
};
typedef struct rexmpp_xml_parser_ctx* rexmpp_xml_parser_ctx_t;
typedef struct rexmpp_xml_parser_handlers* rexmpp_xml_parser_handlers_t;
struct rexmpp_xml_parser_ctx {
#if defined(USE_LIBXML2)
xmlParserCtxtPtr xml_parser;
#elif defined(USE_EXPAT)
XML_Parser xml_parser;
#else
void *xml_parser;
#endif
rexmpp_xml_parser_handlers_t handlers;
void *user_data;
};
/**
@brief Allocates a new XML parser context
@param[in] handlers SAX-like parser event handlers
@param[in] data User-provided data to pass to the handlers
@returns A parser context pointer, or NULL on failure.
*/
rexmpp_xml_parser_ctx_t
rexmpp_xml_parser_new (rexmpp_xml_parser_handlers_t handlers,
void *data);
/**
@brief Frees an XML parser context
@param[in] ctx An XML parser context
*/
void rexmpp_xml_parser_free (rexmpp_xml_parser_ctx_t ctx);
/**
@brief Feeds data to parse into an XML parser
@param[in] ctx An XML parser context
@param[in] chunk A chunk of data to parse
@param[in] len Length of the data chunk
*/
void
rexmpp_xml_parser_feed (rexmpp_xml_parser_ctx_t ctx,
const char *chunk,
size_t len,
int final);
/**
@brief Resets a parser context
@param[in] ctx An XML parser context
@returns A new pointer, since it may change during a reset
*/
rexmpp_xml_parser_ctx_t rexmpp_xml_parser_reset (rexmpp_xml_parser_ctx_t ctx);
/* #if defined(USE_LIBXML2) */
/* /\** */
/* @brief Creates a single ::rexmpp_xml_t XML node out of libxml2's */
/* xmlNode, without siblings. */
/* *\/ */
/* rexmpp_xml_t *rexmpp_xml_from_libxml2 (xmlNodePtr from); */
/* /\** */
/* @brief Creates a ::rexmpp_xml_t XML node out of libxml2's xmlNode, */
/* with siblings. */
/* *\/ */
/* rexmpp_xml_t *rexmpp_xml_from_libxml2_list (xmlNodePtr from); */
/* xmlNodePtr rexmpp_xml_to_libxml2 (rexmpp_xml_t *from); */
/* xmlNodePtr rexmpp_xml_to_libxml2_list (rexmpp_xml_t *from); */
/* #endif */
#endif
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