source: lib/xmltree.h @ 6f10697

/***************************************************************************\
*                                                                           *
*  BitlBee - An IRC to IM gateway                                           *
*  Simple XML (stream) parse tree handling code (Jabber/XMPP, mainly)       *
*                                                                           *
*  Copyright 2006-2012 Wilmer van der Gaast <wilmer@gaast.net>              *
*                                                                           *
*  This program is free software; you can redistribute it and/or modify     *
*  it under the terms of the GNU General Public License as published by     *
*  the Free Software Foundation; either version 2 of the License, or        *
*  (at your option) any later version.                                      *
*                                                                           *
*  This program is distributed in the hope that it will be useful,          *
*  but WITHOUT ANY WARRANTY; without even the implied warranty of           *
*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the            *
*  GNU General Public License for more details.                             *
*                                                                           *
*  You should have received a copy of the GNU General Public License along  *
*  with this program; if not, write to the Free Software Foundation, Inc.,  *
*  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.              *
*                                                                           *
****************************************************************************/

#ifndef _XMLTREE_H
#define _XMLTREE_H

typedef enum
{
        XT_COMPLETE     = 1,    /* </tag> reached */
        XT_SEEN         = 2,    /* Handler called (or not defined) */
} xt_flags;

typedef enum
{
        XT_ABORT,               /* Abort, don't handle the rest anymore */
        XT_HANDLED,             /* Handled this tag properly, go to the next one */
        XT_NEXT                 /* Try if there's another matching handler */
} xt_status;

struct xt_attr
{
        char *key, *value;
};

struct xt_node
{
        struct xt_node *parent;
        struct xt_node *children;
        
        char *name;
        struct xt_attr *attr;
        char *text;
        int text_len;
        
        struct xt_node *next;
        xt_flags flags;
};

typedef xt_status (*xt_handler_func) ( struct xt_node *node, gpointer data );

struct xt_handler_entry
{
        char *name, *parent;
        xt_handler_func func;
};

struct xt_parser
{
        GMarkupParseContext *parser;
        struct xt_node *root;
        struct xt_node *cur;
        
        const struct xt_handler_entry *handlers;
        gpointer data;
        
        GError *gerr;
};

struct xt_parser *xt_new( const struct xt_handler_entry *handlers, gpointer data );
void xt_reset( struct xt_parser *xt );
int xt_feed( struct xt_parser *xt, const char *text, int text_len );
int xt_handle( struct xt_parser *xt, struct xt_node *node, int depth );
void xt_cleanup( struct xt_parser *xt, struct xt_node *node, int depth );
struct xt_node *xt_from_string( const char *in, int text_len );
char *xt_to_string( struct xt_node *node );
char *xt_to_string_i( struct xt_node *node );
void xt_print( struct xt_node *node );
struct xt_node *xt_dup( struct xt_node *node );
void xt_free_node( struct xt_node *node );
void xt_free( struct xt_parser *xt );
struct xt_node *xt_find_node( struct xt_node *node, const char *name );
struct xt_node *xt_find_path( struct xt_node *node, const char *name );
char *xt_find_attr( struct xt_node *node, const char *key );
struct xt_node *xt_find_node_by_attr( struct xt_node *xt, const char *tag, const char *key, const char *value );

struct xt_node *xt_new_node( char *name, const char *text, struct xt_node *children );
void xt_add_child( struct xt_node *parent, struct xt_node *child );
void xt_insert_child( struct xt_node *parent, struct xt_node *child );
void xt_add_attr( struct xt_node *node, const char *key, const char *value );
int xt_remove_attr( struct xt_node *node, const char *key );

#endif