Return to xml.c CVS log

Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / strongswan / src / manager

Strongswan

    1: /*
    2:  * Copyright (C) 2007 Martin Willi
    3:  * HSR Hochschule fuer Technik Rapperswil
    4:  *
    5:  * This program is free software; you can redistribute it and/or modify it
    6:  * under the terms of the GNU General Public License as published by the
    7:  * Free Software Foundation; either version 2 of the License, or (at your
    8:  * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
    9:  *
   10:  * This program is distributed in the hope that it will be useful, but
   11:  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
   12:  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   13:  * for more details.
   14:  */
   15: 
   16: #include <string.h>
   17: 
   18: #include "xml.h"
   19: 
   20: #include <libxml/parser.h>
   21: #include <libxml/tree.h>
   22: 
   23: 
   24: typedef struct private_xml_t private_xml_t;
   25: 
   26: /**
   27:  * private data of xml
   28:  */
   29: struct private_xml_t {
   30: 
   31: 	/**
   32: 	 * public functions
   33: 	 */
   34: 	xml_t public;
   35: 
   36: 	/**
   37: 	 * root node of this xml (part)
   38: 	 */
   39: 	xmlNode *node;
   40: 
   41: 	/**
   42: 	 * document, only for root xml_t
   43: 	 */
   44: 	xmlDoc *doc;
   45: 
   46: 	/**
   47: 	 * Root xml_t*
   48: 	 */
   49: 	private_xml_t *root;
   50: 
   51: 	/**
   52: 	 * number of enumerator instances
   53: 	 */
   54: 	int enums;
   55: };
   56: 
   57: /**
   58:  * child element enumerator
   59:  */
   60: typedef struct {
   61: 	/** enumerator interface */
   62: 	enumerator_t e;
   63: 	/** current child context (returned to enumerate() caller) */
   64: 	private_xml_t child;
   65: 	/** currently processing node */
   66: 	xmlNode *node;
   67: } child_enum_t;
   68: 
   69: METHOD(enumerator_t, child_enumerate, bool,
   70: 	child_enum_t *e, va_list args)
   71: {
   72: 	private_xml_t **child;
   73: 	char **name, **value;
   74: 
   75: 	VA_ARGS_VGET(args, child, name, value);
   76: 
   77: 	while (e->node && e->node->type != XML_ELEMENT_NODE)
   78: 	{
   79: 		e->node = e->node->next;
   80: 	}
   81: 	if (e->node)
   82: 	{
   83: 		xmlNode *text;
   84: 
   85: 		text = e->node->children;
   86: 		*value = NULL;
   87: 
   88: 		while (text && text->type != XML_TEXT_NODE)
   89: 		{
   90: 			text = text->next;
   91: 		}
   92: 		if (text)
   93: 		{
   94: 			*value = text->content;
   95: 		}
   96: 		*name = (char*)e->node->name;
   97: 		*child = &e->child;
   98: 		e->child.node = e->node->children;
   99: 		e->node = e->node->next;
  100: 		return TRUE;
  101: 	}
  102: 	return FALSE;
  103: }
  104: 
  105: METHOD(xml_t, get_attribute, char*,
  106: 	private_xml_t *this, char *name)
  107: {
  108: 	return NULL;
  109: }
  110: 
  111: METHOD(enumerator_t, child_destroy, void,
  112: 	child_enum_t *this)
  113: {
  114: 	if (--this->child.root->enums == 0)
  115: 	{
  116: 		xmlFreeDoc(this->child.root->doc);
  117: 		free(this->child.root);
  118: 	}
  119: 	free(this);
  120: }
  121: 
  122: METHOD(xml_t, children, enumerator_t*,
  123: 	private_xml_t *this)
  124: {
  125: 	child_enum_t *ce;
  126: 	INIT(ce,
  127: 		.e = {
  128: 			.enumerate = enumerator_enumerate_default,
  129: 			.venumerate = _child_enumerate,
  130: 			.destroy = _child_destroy,
  131: 		},
  132: 		.child = {
  133: 			.public = {
  134: 				.get_attribute = _get_attribute,
  135: 				.children = _children,
  136: 			},
  137: 			.doc = this->doc,
  138: 			.root = this->root,
  139: 		},
  140: 		.node = this->node,
  141: 	);
  142: 	this->root->enums++;
  143: 	return &ce->e;
  144: }
  145: 
  146: /*
  147:  * see header file
  148:  */
  149: xml_t *xml_create(char *xml)
  150: {
  151: 	private_xml_t *this;
  152: 
  153: 	INIT(this,
  154: 		.public = {
  155: 			.get_attribute = _get_attribute,
  156: 			.children = _children,
  157: 		},
  158: 		.doc = xmlReadMemory(xml, strlen(xml), NULL, NULL, 0),
  159: 	);
  160: 
  161: 	if (!this->doc)
  162: 	{
  163: 		free(this);
  164: 		return NULL;
  165: 	}
  166: 
  167: 	this->node = xmlDocGetRootElement(this->doc);
  168: 	this->root = this;
  169: 
  170: 	return &this->public;
  171: }
  172: